Product Guide - Cor-A-Vent

COR-A-VENT®

Product Guide

COR-A-VENT PRODUCT GUIDE

- Guide to Cor-A-Vent Products & Application

- Product End Views

- Balanced Ventilation - How it Works

RIDGE VENT PRODUCT BROCHURES

- Revolution Rolled Ridge Vent

- X-5 ridge vent

- V300 & Fold-A-Vent ridge vents

- V400E ridge vent

COMPOSITION SHINGLE APPLICATIONS

- X5 11” with composition shingles (COR-COMP1)

- V600 11” with comp. shingles (COR-COMP2)

- V300 11” with comp. shingles (COR-COMP3)

- Revolution 11” with comp. shingles (COR-COMP4)

CEDAR SHAKES & SHINGLES APPLICATIONS

- V600 8 ½” with cedar shakes (COR-CED1)

- V300 8 ½” with cedar shakes (COR-CED2)

- V300 11” with cedar shakes – hip roof application (COR-CED3)

TILE & SLATE APPLICATIONS

- V600-TE with barrel or S-tile application (COR-TS1)

- V300 8 ½” with flat tile application (COR-TS2)

- V300 11” with slate ridge & hip roof application (COR-TS3)

- V600-TE with flat tile application (COR-TS4)

METAL ROOF APPLICATIONS

- Metal Roof Ventilation color brochure

- V600 11” with standing seam application (COR-MTL1)

- V600-TE with standing seam application (COR-MTL2)

- V600-TE with profile panel application (COR-MTL4)

- V600-TE with profile panel application (COR-MTL5)

- V600-TE with metal shingles (COR-MTL6)

- Purlin Vent – floating ridge application (COR-MTL7E)

- Purlin Vent – shed roof detail (COR-MTL7F)

- Purlin Vent – gutter on wood frame construction detail (COR-MTL7G)

- Purlin Vent – gutter on structural steel detail (COR-MTL7H)

- V600 & V600-TE – ridge with steel framing detail (COR-MTL8)

- S-400 Strip Vent – soffit with steel framing detail (COR-MTL9)

- SP1 – Spacer for metal roofing over asphalt shingles detail (COR-SP1)

SOFFIT APPLICATIONS

- RS-400 Raft-A-Vent brochure

- Soffit Vent (S-400, PS-400, RS-400) brochure

- S-400 with boxed-in eave & stucco soffit details (COR-SOF2)

- S-400 zero overhang soffit detail (COR-SOF3)

- S-400 with engineered truss application (COR-SOF4)

- RS-400 (Raft-A-Vent) with bird blocks & open rafters (COR-SOF5)

- S-400 with overhang soffit restoration/cornice detail (COR-SOF6)

- S-400 shed roof application (COR-SOF7)

- RS-400 (Raft-A-Vent) with exposed eave & truss detail (COR-SOF8)

- PS-400 soffit application (COR-SOF9)

- S-400 frieze board with brick exterior application (COR-SOF10)

- S-400 frieze board with wood siding application (COR-SOF11)

SPECIALTY APPLICATIONS

- Siding Vent System (SV-3, SV-5, Sturdi-Strips) color brochure

- Roof-2-Wall vent color brochure

- Roof-2-Wall vent with shingles & flat tile applications (COR-VAR1)

- Roof-2-Wall vent with masonry veneer wall application (COR-VAR2)

- IN-Vent rooftop intake vent with shingles application brochure

- V600 11” wide ridge beam (3) details (COR-VAR4)

- V600T on slope-to-flat applications (COR-VAR5)

- X5 11” ( ½ piece) unequal pitch details (COR-VAR3)

- Purlin Vent foam & rigid insulation detail (COR-MTL7B)

- V600-TE roof-to-wall with standing seam metal application (COR-MTL3)

- V600-T with zero overhang application (COR-SOF1)

- Cold roof application with S-400 on roof deck (COR-SPC1)

- Cold roof application with S-400 at eaves (COR-SPC2)

- V600 11” flat roof with expansion joint detail (COR-SPC3)

- V600-TE application on existing ridge of admin. Building (COR-SPC4)

- V300 11” firewall detail for partition wall at ridge (COR-SPC5)

- V600 11” firewall details for partition wall at ridge (COR-SPC6)

INSTALLATION INSTRUCTIONS & TESTING INFORMATION

- Soffit, Gable, and Ridge Vents details & information

- Cor-A-Vent Installation & Information Guide (4 pages)

- RADCO Load Tests & Determination of Net Free Vent Area (5 pages)

- CSI 3-Part Specification: Cor-A-Vent Product Specification Information (7 pages)

FAV-20

V-400E–11'' & 81/2''The “Original” shingle-over ridge vent – theone that started it all 30 years ago and theone everybody else has tried to copy.

• V-400E – 17" NFVA provides superior ventilation• Each carton includes 21/2'' roofing nails• Regular and Enhanced versions• V-400E includes 4 end caps

12 – 4' pieces per carton

V-600–11'' & 81/2''The highest airflow in the industry for nearlyevery pitch – from 3/12 to 16/12.

• Available in 11'' and 81/2'' widths• 20'' NFVA provides superior ventilation• Radiused peak keeps the ridge well defined


V-600T & V-600TE• 1'' x 31/4'' x 4' profile• 10'' NFVA, per lineal foot, per piece• Covers: 48 l.f. ridge, 96 l.f. roof to wall


V-300–11'', 81/2'' & 7'' An ideal hip and ridge vent with a low 5/8'' profilethat virtually disappears beneath the capshingle and even lower price – the best valuein the industry.

• Available in 11'', 81/2'' and 7'' widths• Power-Nailable• 13.5'' NFVA• Use on pitches from 3/12 to 16/12• Regular and Enhanced versions

(7" not enhanced)

12 – 4' pieces per carton or bundle

FAV-20–11'',81/2'' & 7'' A flat, continuous 20' folded ridge vent that won’troll back up and won’t hump up under the capshingle. Low 5/8'' profile virtually disappearsbeneath the cap shingle.

• Available in 11'', 81/2'' and 7'' widths• 13.5'' NFVA• Power-Nailable• For use on ridge and hips• Use on pitches from 3/12 to 16/12• Regular and Enhanced versions

(7" not enhanced)

Guide to COR-A-VENT®

Products & ApplicationsThese are general application guidelines. Ultimately, the building professional has to determine which product is the“Best Fit” for his/her application based on building codes, prevailing weather patterns and product venting capabilities.For product end views & dimensions, please refer to Application Drawings CAV-EV. Most of our application drawings are available in .dwg & .pdf file formats onour website at www.cor-a-vent.com/drawings.htm

Our enhanced products (REV-11" & REV-9", X-5 11" & 81/2'', V-600TE, V-400E 11" & 81/2'', V-300E 11'' & 81/2", & FAV-20E 11" & 81/2'') are particularly suited for areas where fine blowing snow occurs.

Note: The width of the ridge cap determines which product to use.

X-5 Ridge Vent–11'' & 81/2''Stop rain and snow coldWith the wind-activated A.W.F. (Active WeatherFoil), X-5 provides complete protection inextreme weather conditions.

• 17'' NFVA per lineal foot provides superior ventilation

• Power-Nailable• Use on pitches from 3/12 to 16/12• Each carton includes four end caps9 – 4' pieces per cartonNote: X-5 is specially designed for use on coastal areas, andwherever extreme wind driven rain and snow is typical.

V-600X-5 Ridge VentRevolution Rolled RidgeVent

V-400E V-300

Soffit Vents

SV-3, SV-5 &Sturdi-Strip Trapped moisturebehind you sidingcan wreak havoc onyour home’s exterior,causing peeling paint, rotting wood, deterioratingunderlayment and mold and mildew growth.COR-A-VENT® SV-3 and SV-5 Siding Ventsand Sturdi-Strips allow that moisture to drainout and let air pass through to keep your wallsystem dry.

• A box of SVS contains 18 pcs. of SV-3 orSV-5 Siding Vent, a 4-feet long vent strip coveredwith our Enhanced Insect Screen, and 56 pcs.of 11/2" wide by 3/8" thick by 4-feet longSturdi-Strips™ plastic furring strips

Siding Vent System Purlin, IN-Vent

S-400 Strip VentContinuous strip soffit vent for hard-to-vent eavedetails – from zero overhang to open rafter.

• Narrow 1'' profile easily concealed• 10'' NFVA per lineal foot


PS-400• 1'' x 3/4'' x 4' profile ideal for 1x soffit panels• 10'' Net Free Vent Area per lineal foot


RS-400• Power nail to the bird block for quick installation• 18.75'' Net Free Vent Area per piece

48 – 221/2'' pieces per carton

Black or White

Black or White

Purlin VentUse Purlin Vent under metal roof and sidewall tovent the total building envelope.

• Works as a thermal break between roofing/purlinand siding/girt to reduce heat/cold conduction

• Doesn’t compress over time, so roofing & sidingscrews holes don’t elongate and leak

• Available in 3" wide x 1" thick x 4' long pcs12 – 4' pieces per carton

IN-Vent• Intake ventilation when soffits or overhangs

are inaccessible – perfect for re-roof jobs• Won’t crush or compress after installation• 10'' Net Free Vent Area per lineal foot64 lineal ft. per ctn. plus 21/2" roofing nailsand IN-Vent end cap sections

REV-11and REV-9. The firstshingle-over ridge vents madefrom 100% pre-consumer recycledplastic. Revolution is the only truly “Green” ridgevent available. The vent core is made entirely fromthe same polypropylene plastic used to manu-facture all of COR-A-VENT’s other products.

• 20-foot long by 11" or 9" wide rolls• 100% pre-consumer recycled polypropylene*• Net Free Vent Area: 12 square inches

per lineal foot• Power nailable • Color: Black

Packaged with two coils of 1¾" galvanizedroofing nails and two peel-and-stick End Caps

*Certification pending

CED

AR

APPS

SH

ING

LE A

PPS

META

L APPS

TILE/S

LATE

APPS

SPECIA

LTY A

PPS

SO

FFIT APPS

RS-400 Raft-A-Vent™

PS-400Soffit Vent

Shingle Applications

S-400 Strip Vent™ X-5 (1/2 PC)

AIRFLOW

OLDROOF

NEWROOF

AIRFLOW

PURLIN

ROOFHUGGER

PURLIN VENT

COR-A-VENTX-5 (1/2 pc)

EXHAUST AIR

WALL

1/2" MAXIMUMOVERHANG

ON CAPCLOSED

OPEN

AIRFLOW

Cedar ApplicationsV-300 & V-300E – 81/2"FAV-20 & FAV-20E – 81/2"V-400E – 81/2"V-600 – 81/2"X-5 – 81/2"

Tile/Slate ApplicationsBarrel/Mission & “S” Tile

V-600TV-600TE

SlateV-400 – 11"V-400E – 11"

Flat TileV-300 & V-300E – 11"V-300 & V-300E – 81/2"FAV-20 & FAV-20E – 11"FAV-20 & FAV-20E – 81/2"V-600 – 11" & 81/2"X-5 – 11" & 81/2"

Metal ApplicationsStanding Seam

V-300 & V-300E – 11"FAV-20 & FAV-20E – 11"V-400E – 11"V-600 – 11"V-600T & V-600TE

ProfileV-300 & V-300E – 11"FAV-20 & FAV-20E – 11"V-600T & V-600TE

Metal ShakeV-300 – 7" & FAV-20 – 7"V-600T & V-600TE

Soffit ApplicationsS-400 – Zero overhang, wood soffit, frieze boardPS-400 – Use on 1" x wood soffit panelsRS-400 – Open rafter details

Specialty ApplicationsHip Roof

FAV-20 & FAV-20E – 11"FAV-20 & FAV-20E – 81/2"

Roof to WallMetal Roofs – V-600TEShingle, Cedar Shake & Flat Tile – use X-5 – 11"(cut in half)

Siding VentilationSturdi-StripSV-3 (3-ply)SV-3 (5-ply)

Shed RoofS-400

Unequal PitchUse X-5 – 11" (cut in half)

Metal Roof & Side WallsPurlin vent – to maintain air passageway between metal roofing/siding & insulation

HIP ROOF

SHED ROOF

ROOF TO WALL

SIDING VENTILATION UNEQUAL PITCH METAL ROOF & SIDEWALLS

7" & 8" Enhanced Ridge CapsV-300 – 7" & FAV-20 – 7"

9" Hip & Ridge CapsV-300 & V-300E – 81/2"FAV-20 & FAV-20E – 81/2"V-400E – 81/2"V-600 – 81/2"X-5 – 81/2"Revolution – REV-9"

12" Shingle CapV-300 & V-300E – 11"FAV-20 & FAV-20E – 11"V-400 & V-400E – 11"V-600 – 11"X-5 – 11"Revolution – REV-11"

THECOR-A-VENT®

SYSTEM

S-400STRIPVENT

COOLEROUTSIDE

AIRCOOLEROUTSIDE

AIR

VENTILATION CHUTE

AIR FLOW

INSULATION

S-400STRIPVENT

VENTILATION CHUTEAIR FLOWINSULATION

LOW

ERED A

IR PRESSURE . . . . . . . . DRAWS ATTIC AIR

OU

T HOT MOIST AIRHOT MOIST AIR

RELATIVE WIND

CATHEDRAL CEILING

ATTIC

V-400E 11"RIDGEVENT

Balanced VentilationHow It Works

A balanced vent system is one that best utilizes three naturalforces: air pressure, the thermal effect and diffusion.Basically, for every square inch of ridge (exhaust) ventyou must balance it with at least one square inch ormore of soffit (intake) vent.

COR-A-VENT® ridge & soffit vent products offer:

• V-600 products – 20 sq. in.Net Free Vent Area (NFVA)/lineal foot

• V-400E & X-5 products – 17 sq. in. NFVA/lineal foot

• V-300 & Fold-A-Vent® products – 13.5 sq. in.NFVA/lineal foot

• S-400 Strip Vent line offers 10 sq. in.NFVA/lineal foot

With a ridge and soffit system, cooler ventilation air willbe drawn into the attic (or roof cavity if a cathedral ceiling)through the soffit/eave vents located within the positivepressure (intake) areas. It will exhaust through the ventsin the negative pressure areas, at the ridge. Wind moving

over the ridge literally “siphons” the hot/moist air out ofattic. If the ridge vent were to be installed alone, thenpart of the ridge would become an inlet vent to relievethis “draw”. This could cause weather infiltration.

The ridge vent must always be installed in combinationwith some form of soffit/eave intake vents. Do not useridge vents with gable vents or other roof mounted vents.

The “Ventilation Chute”, or air passageway betweenthe soffit and the ridge must not be blocked or restrictedso as to impede airflow. Once again, the ridge vent inthis situation can act as intake and exhaust, causingweather infiltration.

For a more attractive ridgeline, COR-A-VENT recommendsinstalling the ridge vent to the very ends of any givenridge. A ridge that is the same height from end to endmakes our vent even less noticeable.

Please refer to the backside of this page for examples oftypical continuous soffit vents and vent chute details.

Figuring Your Ventilation Needs:V-400E: Square footage of building footprint X .48 = Lineal Feet V-400E needed

17

V-300: Square footage of building footprint X .48 = Lineal Feet V-300 needed13.5

Example: 25' x 50' = 1250 Sq.F. 1250 x .48 = 600 600 ÷ 17 = 35 L.F. V-400E needed

The above formulas will give the amount of COR-A-VENT ridge vent needed fora 1/150 vent ratio, provided an equal or greater amount of soffit venting is used.For a 1/300 ratio, (building code minimum) use half the amount of ridge vent.Note: Code interpretation may vary. Consult your local building dept.

For the best appearance, install COR-A-VENT continuously the entire length of the ridge.

This material may be duplicated only for the purposes of specifying COR-A-VENT products. No permission is given to duplicate or otherwisecopy this material for any other purpose without the express written permission of COR-A-VENT, Inc.© 2005 COR-A-VENT, Inc. Balanced Ventilation Sheet 11/05

Note: Should you need any assistance indesigning your ventilation system, faxor mail a sketch and information to ourtechnical services department. COR-A-VENTwill respond with recommendations foryour particular building design.

COR-A-VENT® has promoted and taught balanced ventilation from the day westarted. It’s a concept all vent manufactures readily endorse. Unfortunately,that information doesn’t always end up in the hands of the person designing thebuilding or installing the vents. Balanced venting helps insure the performanceyou expect from ridge venting – uniform, increased airflow through the roofcavity without weather infiltration.

Balanced venting: An equal or greater amount of vent opening (sq. in netfree vent area/NFVA) in thesoffit (intake) than at theridge. For example, ourV-400E products have 17sq. in NFVA per lineal foot.To balance this, you need 2 soffit/eave/intake vents of approximately 8.5 sq. in.per lineal foot (1/2 of 17 ineach overhang).

Balanced venting:Continuous soffit vents arerecommended, especiallyfor venting cathedral ceilings.Wherever there is ridge

vent above, there should be soffit/eave/intake vents on the structure below.Also, COR-A-VENT strongly recommends using of one of our V-300 products(available in 11, 81/2 or 7" widths) on cathedral ceiling and hip roof applications.V-300 delivers 13.5 sq. in net free vent area. The volume of space to be ventedin cathedrals is smaller. Therefore a lower profile (5/8") vent is called for tofurther reduce the chance for infiltration. When installing a ridge ventsystem, all other vent openings (except soffits) must be closed off.

USE BALANCED AMOUNTSOF SOFFIT VENTTO RIDGE VENT

Continuous aluminum strip vent – 8-9 sq. in.NFVA per lineal foot.

8" x 16" under eave cornice vents with maximum spacing of 4' apart – gives 14 sq.in. NFVA per lineal foot.

Continuous perforated panels – 1' wideoverhang (typical) – gives 12-13 sq. in NFVAper lineal foot.

COR-A-VENT’s S–400 Continuous Strip Vent –10 sq. in NFVA per lineal foot.

Maintaining an unrestricted air passageway between the soffit and ridge is crucial to the performanceof the vent system, and must not be blocked or restricted. COR-A-VENT recommends a minimum 2" airspace between the roof sheathing and vent chute or insulation

①

➁

➂

➄

➃

➃

1. SKYLIGHTS 2. DORMERS3. INTERSECTING BUILDING COMPONENTS4. VALLEYS 5. CHIMNEYS

4' MAX

Typical continuous soffit ventsThe following NFVA values are approximate, except for COR-A-VENT S-400 strip vent. Consult the ventmanufacturer or distributor for actual values for specific products.

Typical Vent Chute Applications

TypicalGable Knee Wall

CathedralCeiling

Balanced ventilation – The right proportion of venting.

INLET (BALANCING) VENTS

RIDGE VENT

UNBALANCEDVENTILATION AREAS

COR-A-VENT, INC.P.O. Box 428 • Mishawaka, IN 46546-0428

Phone: (800) 837-8368 Fax: (800) [email protected] • www.cor-a-vent.comwww.revolutionvent.com

COR-A-VENT®, Inc. is proud to introduce the first shingle-overridge vent made from 100% pre-consumer recycled plastic, new

Revolution Rolled Ridge Vent.Revolution (REV-11) is the only truly “Green” ridge vent available.The 11-inch wide by 20-foot long plastic vent core is made entirelyfrom the same polypropylene plastic used to manufacture all of

COR-A-VENT’s other products. We meticulously capture theexcess scrap during production, reprocess it and feed it

directly into the Revolution, keeping it out of landfillswhile also reducing the use of petroleum needed for

new plastic production.

Revolution’s precisely spacedventilation channels provide12 square inches of Net Free Vent

Area per lineal foot to promote theremoval of damaging moisture and heat from

inside your attic. This helps reduce heating and coolingloads when used in conjunction with balanced intake ventilation.

The simple, yet highly effective structural design of Revolution supportspower-nailability for easy installation on asphalt shingle roofs, while alsoproviding protection from rain, snow & insects.

•100% pre-consumer recycled polypropylene*

•Net Free Vent Area: 12 squareinches per lineal foot

•20-foot long by 11-inch wide rolls

•Power nailable •Color: Black

•Enhanced Snow Screen protects from rain, snow & insects

•Packaged with two coils of 1¾" galvanized roofing nails and two peel-and-stick End Caps

*Certification pending

Join theGreen Revolution

4. Beginning at end of ridge, apply vent with minimum 1¾" nails (2 coils provided in box) following “NAIL HERE” guides along vent cap. Only apply nails within the area between leg cavities – DO NOT apply nails outside of “NAIL HERE” guide marks. Vent may be power nailed or hand nailed. Do not overdrive nails. Apply fi rst four nails (two on each side), then remove colored band to unroll rest of vent. Continue to apply according to marked guides. Repeat Step 3 to seal opposite end of vent.

5. For runs longer than 20 feet, additional vent rolls can be applied. Line up end of additional vent roll with previous roll by overlapping at offset lip, then apply Peel-&-Stick end cap to seal junction. Follow Step 4 to apply rest of vent.

6. Center shingle cap on vent and nail along “NAIL HERE” guideline. Continue applying caps until all vent is covered with ridge caps. Do not overdrive nails. Nail head should be fl ush with top of shingle, without indenting it. Pre-forming caps in cold weather helps avoid cracking.

Revolution Installation Instructions

1. Measure a 3" slot, 1½" each side of ridge centerline. This allows for a 2x ridge board or smaller. Snap chalk lines the entire length of the ridge. Cut slot with circular saw and clean out debris. Set saw depth so as not to cut roof rafters. Stop slot 12" short of any ridge end, intersecting ridge or obstruction (such as a chimney).

2. Cut clear band around roll, leaving colored band to hold all but the starter section together. Vent installs with legs down and fl at cap on top.

3. Remove backing from 1 Peel-&-Stick end cap section. Apply half of the section to end of the vent, starting with the top cap. Wrap other half of end cap down and underneath vent legs and Snow Screen to close off end of vent.

WRAP END FROM TOP TO UNDERSIDE OF VENT

7. For shorter runs of vent, trim areas provided every 12". Cut with utility knife, snips or saw, taking care to follow recognized manufacturers’ safety procedures for each.

Be careful not to touch knife blade. Always cut in a direction away from yourself. Wear proper hand and eye protection.

12 Square inches Net Free Vent Area per lineal foot. 20' long x 11" wide x 5/8" thick.

For use on roof pitches 3/12 - 16/12.

Call our technical department for any special application questions.

Important notes: COR-A-VENT ridge vents should always be installed with soffi t/eave/intake vents of equal or greater area. All other vent openings (except soffi ts) should be closed off. The air passage way or “Ventilation Chute” between the inlet (soffi t/eave/intake) and the outlet (ridge) vent must not be blocked or restricted.

COR-A-VENT products meet or exceed all nationally recognized building codes for ventilation.

Patent pending #6,039,648

© 2009 COR-A-VENT, Inc. Made in the USA Revolution Flier/Instruction 0 /

COR-A-VENT, Inc.P.O. Box 428 • Mishawaka, IN 46546-0428

Phone: (800) 837-8368 Fax: (800) 645-6162E-mail: [email protected]

www.cor-a-vent.comwww.revolutionvent.com

Note: MAXIMUM 1/2" cap overhang required for valve (AWF) to close properly.

COR-A-VENT®has the answer for stopping all forms of weather infiltration with the

X-5 ridge vent: The Complete Solution – superior ventilation performance and the ability tostop rain and snow infiltration cold…even in weather extremes.

X-5 employs dual protection to stop infiltration. First is the AWF – the active weatherfoil, a specially designed, wind-activated, weather impenetrable valve – permanentlyattached to the bottom layer of our X-5 vent material.The AWF will stop wind driven rain from penetratingyour roof cavity. Second is the enhancedsnow screen, an air-permeable filterthat keeps out snow, even at low windspeeds, while still allowing hot, moistair to flow out of the attic.

How does the AWF work? We’ve engineered the valve to closeat 10 MPH (± 2 MPH). The leading (windward) edge of the AWF,which is shaped like an airfoil, catches the wind blowing at it,whether directly or at an angle, and snaps shut. Meanwhile, onthe downwind (leeward) side, the vent remains open and continuesto exhaust hot, moist air from the attic. Below 10 MPH, the valveopens completely for positive ventilation from both sides of thevent. The AWF effectively blocks weather from entering throughthe vent’s flutes. Dade County acceptance

1and our own in

house rain tests confirm this. The harder the wind blows, thetighter the AWF seals.

How long will the AWF last? Developed from a special formulationof Reemay® non-woven with a UV inhibited proprietary coating, it’sguaranteed to last. Tested to the same standards as compositionshingles, the AWF fabric was subjected to a 5000-hour exposuretest from a Xenon Arc weatherometer.

That’s theequivalent of 25 yearsexposure to south Florida orDeath Valley sun.The results –no significant embrittlement or degradation.

X-5 is made from a special 4mm sheet of extruded PP. Thismeans less restriction and more airflow. At the same time, it has17 sq. inches of NFVA (Net Free Vent Area) per lineal foot,which exceeds all national building code requirements.X-5 willwork with shingle, metal, tile and cedar roofs and is also aperfect Roof-To-Wall vent.X-5 is available in 11'' and 81/2''widths and is packaged 9 four foot pieces per box.

When performance counts – count on X-5. From COR-A-VENT –continuing our tradition as –„The Leader In Innovative Rooftop Ventilation®‰.

Like our V-300 vent line, X-5 comes in convenient 4' sections,cuts easily with a utility knife and is power nailable 2.Packed 9 4' pcs. to a carton, with 4 EC-400 end caps, it’seasy to handle going up the ladder and on the roof.

X-5 is covered under U.S. patents 6,213,868; 5,921,863; 5,704,834;5,542,882 & Des. 465,839. Other patents pending.

1 Testing completed, pending Dade County approval.

2 Use a minimum 13/4" roofing nail. Nail tip must penetrate sheathing.Installer to determine proper nail length to use.

© 2005 COR-A-VENT, Inc. 10/05/X5

Specify COR-A-VENT ® Enhanced X-5 for your next project!

Versatile, use on a wide variety of applications!

ROOF to WALL STANDING SEAM METAL FLAT TILE CEDAR SHAKE

COR-A-VENT ridge vents must be installed with an equal or greater amount of soffit or intake ventilation to achieve optimal results. For more information on balancedventilation, visit the COR-A-VENT website: www.cor-a-vent.com.

COR-A-VENTX-5 (1/2 pc)

EXHAUSTAIR

WALL

CLOSED

OPEN

AIRFLOW A

METALFLASHING

AWF(ACTIVE

WEATHERFOIL)

13/4"MIN. OP'G.

LOW PROFILECAP

X-5 (11")

CLOSED

OPEN

4"

FLASHING DETAIL

A

AIRFLOW

A

EXHAUSTAIR

AWF(ACTIVE

WEATHERFOIL)

EXHAUSTAIR

AIRFLOW

2"MIN. OP'G.

CLOSED

OPEN

X-5 (81/2")

AIRFLOW

13/4"MIN. OP'G.

AWF(ACTIVE

WEATHERFOIL)

CLOSED

OPEN

EXHAUSTAIR

X-5 (81/2")

X-5 11” & NEW 81/2”

ENHANCED RIDGE CAP

1. 13.5 Square Inches of Net Free Vent Area

2. Available in 3 Widths, 11", 81/2" & 7"

3. Power Nailable

4. Easy to Apply 4 or 20 Foot Sections

5. Perfect on Hip Roofs & Cathedral Ceilings

6. Available with Enhanced Snow Screen (V-300E & FAV-20E 11" & 81/2")

7. Works on Steep Pitch Roofs1

8. Low 5/8" Profile

Freedom…in architectural design calls for flexibility and COR-A-VENT’s V-300 and Fold-A-Vent (FAV-20) families of ridge vents deliver the unique flexibility toadapt to just about any roof design – whether on new construction or when re-roofing. V-300 & FAV-20 are low profile (5/8" high) and recommended for hard to ventilate roofs,such as cathedral ceiling and hip roofs. Both are available in 11", 81/2" and 7" widthsand work great with 3-tab or architectural shingles as well as cedar shake, slate, flat tileand metal roofs. Your ridge line will look sharp with V-300 or FAV-20.

Protection…is what COR-A-VENT offers with our enhanced snow screen (V-300E & FAV-20E)to keep out wind-driven precipitation. The highly breathable filter will allow hot, moist air out, but won’t let weather in.

1 3/12 to 16/12 pitch roofs – 5/12 minimum on hip applications.

2 1/2" 2 1/2"A B A5/8"

5 1/2" 5 1/2"11"

5/8"

3 1/2"7"

3 1/2"

A B A2" 2"

* A=5/16" * B=3/16"

5/8"

1 7/8" A B A

4 1/4"8 1/2"

4 1/4"

1 7/8"

V-300 11" & FAV-20 11"

V-300 7" & FAV-20 7"

Enhanced products measure the samedimensions as standard products.

V-300 81/2" & FAV-20 81/2"(regular & enhanced)

V-300 11" V-300E 11"V-300 81/2" V-300E 81/2"V-300 7"

(regular & enhanced)

FAV-20 11" FAV-20E 11"FAV-20 81/2" FAV-20E 81/2"FAV-20 7"

V-300E

Adaptability…is what V-300 & FAV-20 offer in any hip design for a clean,uncluttered appearance. They are ideal for steep pitch and short ridge length hip roofs andcan be extended all the way down the hip to the gutter for a smooth, unbroken roofline. V-300 7" or FAV-20 7" are sized for use with RIDGLASS™ and Z® Ridge* high profile hip andridge caps. Call our technical department for help with hip installations or unique applications.

Reliability…is what you get with V-300 & FAV-20. Our 4-ply design delivers 13.5 sq. inchesof Net Free Ventilation Area (NFVA) and the dimensionally-stable, profile extruded polypropylene material is

impact resistant and self-cleaning, but still cuts easily with a utility knife. Installation is a breeze. V-300 & FAV-20 arepower nailable and go on fast and straight – they won’t compress or hump like other low profile products.

Fold-A-Vent…is the perfect 20' solution. It is formed into 5 – 4' sections. The folds “relax” as the sections are extended, so the ventgoes on flat and smooth. While nailing the first section, our exclusive“Yellow Starter Band” keeps the remaining 4 sections together. Installwith your power nailer and standard 11/2" coil nails. The unique routed center slot allows you to center the vent on the ridge by sighting down it. No need to snap chalk lines. The flexible center hinge allows easy alignmenton roofs up to 16/12 pitch.

Unlike “rolled products”, the FAV-20 bundle stays put on the ridge whileyou install it – you won’t end up chasing it down the roof or picking

it up off the ground. Corrugated rolled vents look nice in thepackage, but wait until you try to unroll them! They have a

built-in curl. That’s because the vent is rolled into apackage while the plastic is still warm. Roll it out and it wants to come right back. Installation is tougher and

you’re left with a series of humps to flatten out.Fold-A-Vent

20'

Fold-A-Vent…fast and easy “one-man” installation. Performance for the life of your roof.

*Z® Ridge is a registered trademark of Elk Corporation of Dallas, an ElkCorp company.Fold-A-Vent – Straight & Smooth

COR-A-VENT® has promoted and taught balanced ventilation from the day we started. It’s a concept all vent manufacturersreadily endorse. Unfortunately, that information doesn’t always end up in the hands of the person designing the buildingor installing the vents. Balanced venting helps ensure the performanceyou expect from ridge venting – uniform, increased airflow through theroof cavity without weather infiltration.

Balanced Venting: An equal or greater amount of vent opening(sq. in. net free vent area/NFVA) in the soffit (intake) than at theridge. For example, our V-300 & FAV-20 products have 13.5 sq. in.NFVA per lineal foot. To balance this, you need 2 soffit/eave/intakevents of at least 6.75 sq. in. per lineal foot.

Balanced Venting: Continuous soffit vents are recommended, especially for venting cathedral ceilings. Wherever there is ridge ventabove, there should be soffit/eave/intake vents on the structure below.

Also, COR-A-VENT strongly recommends using one ofour V-300 or FAV-20 products (available in 11", 81/2" or 7"widths) on cathedral ceiling and hip roof applications. V-300& FAV-20 deliver 13.5 sq. in. net free vent area. Becausethe volume of space to be vented in cathedrals is smaller,a lower profile (5/8") vent is needed to further reducethe chance for infiltration. When installing a ridge ventsystem, all other vent openings (except soffits)must be closed off.


Balanced ventilation–The right proportion of venting.

COR-A-VENT® products meet or exceed all nationally recognized building codes for ventilation. COR-A-VENT products arecovered under the following patents: 5,054,254; 5,339,582; 5,439,417 5,542,882; 5,603,657; 5,704,834; 5,921,863; 6,039,646;6,213,868; 6,558,251B2; 6,589,113; D465,839 — additional patents pending.

© 2005 COR-A-VENT, Inc. 12/11 V-300Flier Made in the USA.

For the best appearance, install V-300 & FAV-20 products continuously the entire length of the ridge.

Figuring Your Ventilation Needs: V-300 & FAV-20 have 13.5 sq. in. NFVA/lineal foot.

V-300: Square footage of building footprint X .48 = Lineal Feet V-300or FAV-20 13.5 or FAV-20 needed

Example: 24' x 70' = 1,680 Sq.F. 1,680 x .48 = 806 806 ÷ 13.5 = 60 L.F. V-300 or FAV-20 needed

The above formulas will give the amount of COR-A-VENT ridge vent needed fora 1/150 vent ratio, provided an equal or greater amount of soffit venting is used.For a 1/300 ratio, (building code minimum) use half the amount of ridge vent. Note: Code interpretation may vary. Consult your local building dept.

Note: Should you need any assistance in designing your ventilation system, fax or maila sketch and information to our technical services department. COR-A-VENT will respondwith recommendations for your particular building design.

1. Measure a 3" slot, 11/2" each side of ridgecenterline. This allows for a 2x ridge board orsmaller. Snap chalk lines the entire length ofthe ridge. Cut slot with a circular saw and cleanout debris. Set saw depth so as not to cut roofrafters. Stop the slot 12" short of any ridge end,intersecting ridge or obstruction (such as a chimney).

2. Cut the 3 clear bands leaving the coloredband to hold all but the starter section together.Turn the vent bundle upside down to expose theunderneath side of the starter section end. Followsteps 3 – 4 to create its own Folded End Cap.

6. Continue to tack nail both sides of entirelength of vent. Use nail pattern shown in step 4.Center shingle cap on vent and nail. Continuenailing until all vent is covered with ridge caps.Be careful not to overdrive nail. Nail headshould be flush with top of shingle, withoutindenting it. Pre-forming caps in cold weatherhelps avoid cracking.

5. Continue applying FAV 20 by walking outremaining sections. Pull firmly to fully extend,center vent on ridge and nail other end down.Make sure vent matches roof pitch before nailingboth sides in place. If necessary add FAV 20 untilentire ridge is covered. Use a utility knife to cut lastsection to length. Fold end to finish (steps 3 – 4).Caulk between bottom edge of vent and roof.

B

A

3. Use a utility knife to cut out a “V” shapednotch from the centerline approximately 13/4" infrom edge and remove loose material (A).Cut through the bottom 3 layers of the ventas pictured (B) (located approx. 13/4" from &parallel to the end). Remove loose pieces.Be careful not to cut into top layer.

4. Fold flap under and secure with a 2" roofingnail. This allows the nail to penetrate an extralayer of vent material (inset). Align starter end1/2" in from edge of roof, and centered on ridge.Be sure to caulk between bottom edge of ventand roof. Nail the starter section at pointsA, B & C, 2" up from edge.

C

AB

If Architectural Shingles, Shakes or roofing with an irregular surface is used, apply a bead of caulk to roofdeck before installing vent. This will seal any gaps that could allow weather penetration under the vent.

COR-A-VENT, INC.P.O.Box 428 • Mishawaka, IN 46546-0428

Phone: (800) 837-8368 • Fax: (800) [email protected] • www.cor-a-vent.com

Our website contains a complete listing of application details in.PDF and .DWG formats for viewingor downloading, or

call our technical staff at 800-837-8368.

• NEW! V-400E – with enhanced snow screen• V-400E – certified 17 sq. inches NFVA* per foot• Exceeds all national building codes for ventilation• Easy to handle 4' pieces – 12 pieces (48 l.f.) per carton•21/2'' roofing nails & 4 end caps included (with V-400E)• Can be applied on hip roofs (not S-400)• More flexibility on steep pitch roofs – now works on 16/12 pitch

• Solid base provides a weather-tight seal under vent• Cuts with a utility knife – no waste

•“Live” flexible hinge – makes it easy to match roof pitch• Leaves a well defined ridge – “no hump or domedshaped” peak

• Won’t crack or shatter in cold weather application• No baffles to clog with leaves or pine needles• Proven by 30+ years of on the roof performance• Lifetime warranty• S-400 – certified 10 sq. inches NFVA per foot

V-400E

Protect Your Roofing Investment, Install...

COR-A-VENT®

Ridge&SoffitVent...On NEW or REROOF Installations.

S-400

* Net Free Vent Area

S-400STRIPVENT

AIR FLOW

INSULATION

AIR

VENTILATION CHUTE

TRUSS

Engineered Truss

INSULATION

S-400STRIPVENT AIR

VENTILATION CHUTE

AIR FLOW

RAFTER

S-400STRIPVENT AIR

VENTILATION CHUTE

AIR FLOW

RAFTER

INSULATION

Wood Overhang (Typical)Zero Overhang (Salt Box/Cape Cod)

2 x 6 ROOF RAFTER

RIDGE CAPV-400E

RIDGE VENT

ORIGINALSHEATHING

2 x 2 INSULATION RAILING

2 x 2 FIRING STRIPS@ O.C. - RAFTERS

S-400STRIPVENT

AIR

AIRFLOW

AIR FLOW

AIR FLOW

RIGID FOAM INSULATION

CONTINUOUSWATERPROOFING MEMBRANE

2" AIR-WAY

Cold Roof Application

Simple Solutions for all Your Eave Venting Details. The science ofa good ridge and soffit vent system depends upon the equalizationor “balance” of its two components – the soffit/eave (intake) airand the ridge (exhaust) air. This principle of good venting practiceworks well with most traditional roof designs.

However, many contemporary house and roof designs are limited inhow well they can be naturally ventilated. This is a result of restriction inthe amount of, or placement of critical intake ventilation. In the interestof modern architecture and good ventilation practices, COR-A-VENThas developed various unique soffit venting applications using ourS-400 Strip Vent.

All ridge vents, work best with soffit/eave (intake) vents. For thetop performance, place the intake vents low on the structure, typicallyat the overhangs.

With new construction or when re-roofing, all other attic exhaustvents such as gable-end, roof, or turbine vents should either be blockedoff or removed.

The stack effect (rising warmer air) is enhanced and thus maximumupdraft (ventilation) is obtained when no other opening(s) can distort theair pattern between the intake and the exhaust vents.

COR-A-VENT® S-400 Soffit/Eave Vents• There really are as many ways to install S-400 Strip Vent as

there are eave construction details• 1" x 11/2" x 4' cross section gives you maximum soffit/eave

ventilation in a minimum space• 10 sq. in. NFVA* per

lineal foot• S-400 fits narrow spaces

where other vents can’t, likezero overhangs

• The durable 4' Polypropylene (PP) sections are available inblack or white, 24 – 4' pieces (96 l.f.) per carton

• Self-cleaning – vertical flute orientation doesn’t show the dirt• Crush resistant so you can install with a power nail gun• Pair up S-400 with any of COR-A-VENT’S ridge vent products

for an unbeatable system• Can be installed in multiple layers for additional ventilation

1"

1 1/2"

(END VIEW )(EDGE VIEW )

4'-0"

Figuring Your Ventilation Needs:

V-400E: Square footage of building footprint X .48 = Lineal Feet V-400E needed17

Example: 25' x 50' = 1250 Sq.F. 1250 x .48 = 600 600 ÷ 17 = 35 L.F. V-400E needed

The above formulas will give the amount of V-400E ridge vent needed fora 1/150 vent ratio, provided an equal or greater amount of soffit venting is used.For a 1/300 ratio, (building code minimum) use half the amount of ridge vent.Note: Code interpretations may vary. Consult your local building dept.

For the best appearance and performance install COR-A-VENT ridge and soffit vents continuously at the ridge and in the soffits.

This material may be duplicated only for the purposes of specifying COR-A-VENT products. No permission is given to duplicate or otherwisecopy this material for any other purpose without the express written permission of COR-A-VENT, Inc.© 2005 COR-A-VENT, Inc. 2 Page V-400 07/05

Note: Should you need any assistance in designing your ventilation system, fax or mail a sketch and information to our technical services department. COR-A-VENT will respondwith recommendations for your particular building design.

Maintaining an unrestricted air passageway between the soffit and ridge is crucial to the performanceof the vent system, and must not be blocked or restricted. COR-A-VENT recommends a minimum 2" airspace between the roof sheathing and vent chute or insulation.

COR-A-VENT, Inc.P.O. Box 428 • Mishawaka, IN 46546-0428


AIR FLOW

RAFTER

INSULATION

BLOCKING

S-400STRIPVENT

AIR FLOW

Shed Roof

* Net Free Vent Area

COR-A-VENT products are low profile, from 5/8'' to 1'' high,and virtually disappear beneath the ridge cap. Made of thermallystable, crush resistant polypropylene (PP) sheets*, our ventsdon’t compress over time, so roofing screw holes don’t elongateand leak. COR-A-VENT is easy to install, with a minimum ofwaste. A wide, solid base on allour products insures a good sealunder the vent. The vent’s crosssection lets maximum air flowthrough, while our enhancedvents (V-600TE & V-400E) keepfine powdered snow out. COR-A-VENT’s design also works withany closure and cap system.

We’re the leading manufacturer of attractive, tested ventapplications for metal roofing. Offer your customer the low profilebeauty and performance of continuous ridge venting, on whateverstyle and color roof they choose. With the growing acceptance ofmetal for light commercial, residential and institutional roofs, itjust makes sense to top off the job with a ventilation system thatlooks as good as the rest of the roof.

Visit www.cor-a-vent.com and see all the ridge and eaveventing details we offer for metal roofing. Our versatility andbreadth of applications earns us the title of . . .The Leader in Innovative Rooftop Ventilation!®

• The great look of an uncluttered roofline as well as the benefit of continuousventilation – removing heat and preventing condensation in your roof cavity.

• The efficiency of a static ventilation system that is self-cleaning and maintenance-free.

• Plenty of options for whatever style of metal roofing you choose – fromstanding seam to profile panel to metal shakes.

• Light weight, easy to install vent that can be screwed down without crushing.

• Long lasting, quality products that are guaranteed for the life of your roof.

• When paired with our Purlin Vent,™ forms a total system for venting bothsidewalls and roofs. See Purlin Vent details at: cor-a-vent.com

Protect the beauty of your metal roofing.

Profile –Wayne Buildings – Cleves, OH

Metal Shake –KBS Metal Roofing –LaPorte, IN

Standing Seam –All Spec Metal Systems – Holts Summit, MO

SinceSince1976(SIDE VIEW )

4'-0"

Standing Seam.This is becoming the preferred roofing systemfor builders of low-rise commercial, industrial

and institutional buildings. More than50% of these types ofstructures erected inthe past several yearshave standing seam

roofs and more than 1 billion square feet ofstanding seam metal roofing has been installed.This roof-style is designed to be weather-tight,with a clip-fastened system beneath the steelpanels to cut down on roof penetrations. Paired up with COR-A-VENT ridge vents, it’s abeautiful roof that will last.

Profile.Also known as “screwdown” roofing, this system is durable,lightweight and relatively inexpensivecompared to othertypes of metal roofing and is installed over and

fastened directly to the decking underneath.Profile panel is widely used with industrial andagricultural structures like garages and utilitybuildings, or horse and animal barns.

COR-A-VENT is a perfect match for thisinvestment – the one on the roof and everythingunderneath it.

Metal Shake.With the look of shingle and the durability of metal,this alternative to typical residential roofing hasplenty of options.Choose from metalshakes that resemblecedar wood or tile, orstone-coated productsthat resemble asphaltshingles, like the inset photo of stone-coatedshingles from COR-A-VENT customer Gerard Roofing Technologies.

COR-A-VENT comes in a variety of widthsto match the cap sizes of today’s popular metalshake roofs.

*Crush test results of 7,653 PSF (#’S per square foot)per RADCO Test Report RAD-2376

Purlin Vent.• Use Purlin Vent under the roof and behind the

sidewall to vent the total building envelope.

• Fluted 1'' cross section provides maximum airflow in minimum space.

• Works as a thermal break between roofing/purlinand siding/girt to reduce heat/cold conduction.

• Purlin Vent provides a “drain path” for any rainor moisture that penetrates the sidewall.

• Use with any of COR-A-VENT’s metal ridgeand eave vent applications for a complete system (V600-TE shown).*

• Use with Roof Hugger™ on metal re-roofs toadd insulation and ventilation.

• Made of heatstable, crushresistantpolypropylene(PP) sheets.**

• Doesn’t com-press overtime, so roofing& siding screws holes don’t elongate and leak.

AIRFLOW

OLDROOF

NEWROOF

AIRFLOW

PURLIN

ROOFHUGGER

PURLIN VENT

FLOW

AIRAIR

AIR FLOW

AIR

CLOSURE

RIDGE CAPV600-TE V600-TE

FLASHING

STEEL FRAMING PURLIN

BLANKETINSULATION

GIRTS

PURLINVENT

PURLIN VENTPURLIN VENT

METAL ROOF DECKPURLIN

VENT

FLASHING

PURLINVENT

STEEL SIDING

AIRAIR

AIR

(SIDE VIEW)

4'

3"

1"1"

4'

PURLIN™ VENT (1") 10 Sq. In. Net Free Vent per L.F.

Our website contains a complete listing of applicationdetails in .PDF and .DWG formats for viewing ordownloading, or call our technical staff at 800-837-8368.COR-A-VENT® products meet or exceed all nationally recognized building codes for ventilation. COR-A-VENT products are covered under the following patents:5,054,254; 5,339,582; 5,439,417 5,542,882; 5,603,657; 5,704,834; 5,921,863; 6,039,646; 6,213,868; 6,558,251B2; 6,589,113; D465,839 — additional patents pending.

Metallic Products Corporation is a leading manufacturer of OEM and aftermarketroof vents for metal applications. They offer a made-to-order 10-ft. finished ridge ventassembly, and COR-A-VENT is the heart of this product. Steel parts match the roof typeand color finish, and all paint types and colors are available, including Kynar®.

For more info. call them at 800-356-7746 or visit www.mpvent.com

© 2007 COR-A-VENT, Inc. 10/09 – Metal Brochure

Profile MetalApplications with V-600T & V-600TE

• 20 sq. in. NFVA* – 1” high

• 24 – 4’ pcs. per carton

• Accommodates wide ridge caps

• Enhanced Snow Screen™ (V-600TE) for added weatherprotection

• 3/12 – 16/12 pitch applications

(See V-600TE illustration on cover)

TRUSS

SHEATHING

PROFILE PANELMETAL ROOFING

METAL ROOFCAP

1 3/4"MIN. OP'G

7/8"MIN. OP'G

HEAVY FELT PAPEROR WATERPROOF MEMBRANE

V-600T

AIR FLOW

METALFLASHING

FOAMCLOSURE

FELTPAPER

EXHAUSTAIR

METAL ROOFCAP

V-600T

AIR FLOW

METALC-CLOSURECHANNEL

EXHAUSTAIR

Roof to WallApplications withV-600TE

• 10 sq. in. NFVA* – 1'' high

• 24 – 4' pcs. per carton –vents 96 l.f. of ridge in this application

• Enhanced Snow Screen™for added weather protection


WALL

FLASHING

RAFTEROR TRUSS

1"SLOT

AIR FLOW

STANDINGSEAMMETALROOFING

CAULKING

INSULATION

ENHANCEDSNOW SCREEN

METALSIDING

7/8" MIN. OP'G

EXHAUSTAIR

V-600TE

Metal ShingleApplications with V-600TE

• 20 sq. in. NFVA* – 1'' high

• 24 – 4' pcs. per carton

• 2 piece installation fits undera range of ridge caps widths

• Enhanced Snow Screen™for added weather protection


CAULKING

11/2''

HOT AIR FLOW

WATERPROOFMEMBRANE

OR EQUIVALENT

EXHAUSTAIR

30# FELTOR EQUIVALENT

SHEATHING

METALSHINGLE

V-600TEMETAL RIDGE CAP

TRUSS

MINIMUMSLOPE

Standing Seam MetalApplications with V-600 or V-400E

V-600• 20 sq. in. NFVA* – 1'' high


• Available in 11'' & 81/2'' widths

• Maximum airflow


V-400E • 17 sq. in. NFVA* – 1'' high


• Available in 11'' & 81/2'' widths

• Enhanced Snow Screen™ foradded weather protection

• 3/12 – 16/12 pitch applications(See V-400E illustration on cover)

The versatility of COR-A-VENT ® – choose from these great ridgevents for the product that matches your needs, in any application.

Wayne Buildings – Cleves, OH

*Net Free Vent Area

STANDING SEAMMETAL ROOF

FASTENERS TYP.

V-600 LOW PROFILE CAP

1 3/4"MIN. OP'G.

A

7/8" MIN.

OP'GHOTAIR

EXHAUSTAIR

31/2"

FLASHING DETAIL A

SPA

CE

R F

OR

ME

TAL

RO

OF

ING

O

VE

R A

SP

HA

LT S

HIN

GL

ES

Raft-A-Vent™ is available ineither white or black.

You can power-nail or screw down Raft-A-Vent andpre-attach to the blocking forfast installation!

A 221/2” Eave Vent Designed to Fit Between the Rafters

Introducing COR-A-VENT’s Latest Soffit Vent Innovation—

Providing soffit ventilation for open-rafter construction has long been aheadache for many builders. The optionshave been few, consisting mainly of acouple of screened-over holes in theblocking or a few metal grates every twoor three rafter bays that don’t providenearly enough ventilation and, quitehonestly, don’t look very good.

But COR-A-VENT® has the answerwith its newest product, Raft-A-Vent™,a 22.5" long vent strip designed to fitbetween the rafters, on top of the blocking. Raft-A-Vent is the ideal product for this situation.

At only one inch thick, Raft-A-Ventwill virtually disappear under the eave,but still provides 18.75" of Net Free VentArea per piece and is designed to runcontinuously in every rafter bay* to provide the superior intake ventilationyou need for a balanced vent system.

Good ventilation helps reduce moisturebuildup and the possibility of mold growth.For an unmatched system, pair Raft-A-Ventup with any one of COR-A-VENT’s ridgevents, like V-300 81/2" or FAV-20 81/2",both UL® Class A fire rated products.

*See the back of this flyer or go to cor-a-vent.com formore information about using COR-A-VENT ridge and soffitventilation products in areas that require more stringent designof roof diaphragms in accordance with IBC requirements forwind and/or earthquake loading.

S-400 Strip Vent: The original, continuous soffitventing solution is still the best choice for venting

overhangs and eaves – and once architects findout about it, they spec it on every job!

With 10 sq. inches NFVA per foot,S-400 provides superior intake

ventilation for any detail –from zero overhang to

open rafter tails.

The science of a good ridge and soffit vent system depends upon theequalization or “balance” of its two components – the soffit/eave (intake) airand the ridge (exhaust) air. This principle of good venting practiceworks well with most traditional roof designs.

However, many contemporary house and roof designs are limited in how well they can benaturally ventilated. This is a result of restriction in the amount of, or placement of criticalintake ventilation. In the interest of modern architecture and good ventilation practices,COR-A-VENT has developed various unique soffit venting applications using our S-400 Strip Vent.

All ridge vents, work best with soffit/eave (intake) vents. For top performance, placethe intake vents low on the structure, typically at the overhangs.

With new construction or when re-roofing, all other attic exhaust vents such as gable-end,roof, or turbine vents should either be blocked off or removed.

The stack effect (rising warmer air) is enhanced and thus maximum updraft (ventilation)is obtained when no other opening(s) can distort the air pattern between the intake andthe exhaust vents.

AIR

AIR FLOW

INSULATION

TRUSS

VENTILATION CHUTE

S-400STRIPVENT

S-400STRIPVENT

VENTILATION CHUTE

AIR FLOW

RAFTERINSULATION

AIR Zero Overhang(Salt Box/Cape Cod)

Engineered Truss

Simple Solutions for all Your Eave Venting Details

INSULATION

RAFTER

AIR FLOW

VENTILATION CHUTE

ROOFING TILE

S-400STRIPVENT

STUCCO

AIRStucco Soffit

WoodOverhang(Typical)

PS-400 Strip Vent

10 SQ. IN. NFVA PER LN. FT.

TOP VIEW

1"

3/4''

4'LENGTHS

SIDE VIEWPS-400SOFFITVENT

1 x 6 SOFFIT BOARD

BLOCKING

DRIPEDGE

AIR FLOW

TRUSS

FRIEZEBOARD

AIRFLOW

Another new soffit product from COR-A-VENT is the PS-400Strip Vent, a 3/4" wide continuous strip that’s perfect for 1xsoffit panels. Like the original Strip Vent, PS-400 is available ineither black or white and provides 10 sq. in. Net Free Vent Area perlineal foot. Pre-attach PS-400 to the 1x for quick installation.

BIRD BLOCKW/VENT

RAFTER

JOIST

TOP PLATE

ROOFING PAPER RS-400RAFT-A-VENT

PLYWOODSHEATHING

RS-400 Raft-A-Vent

NOTE: FASCIA BOARDw/ S-400 IS APPLIEDAS AN ASSEMBLYAFTER BRICK WALLIS PUT UPTO MAKE FORFASTER APPLICATION

NAILER BOARDASSEMBLY

RAFTER

SOFFIT

BRICK WALL

SHEATHING

ROOFING

FASCIA

SOFFIT

AIRFL

OW

RAFTER

FASCIAw/S-400 FILL ANY GAP BETWEEN

BRICK AND S-400 WITHSILICONE CAULK

BRICK WALL

NAILERBOARD ASSEMBLY

WALL

AIRFLOW

Special application of S-400made into an assembly–

COR-A-VENT S-400TAN Strip Vent w/Overhang Soffit Application

• There really are as many ways to install S-400 Strip Vent as there are eave construction details• 1" x 11/2" x 4' cross section gives you maximum soffit/eave ventilation in a minimum space• 10 sq. in. NFVA per lineal foot• S-400 fits narrow spaces where other vents can’t, like zero overhangs• The durable 4' PP sections are available in black, white or tan• Self-cleaning – vertical flute orientation doesn’t show the dirt• Crush resistant so you can install with a power nail gun• Pair up S-400 with any of COR-A-VENT’S ridge vent products for an unbeatable system• Can be installed in multiple layers for additional ventilation

1"

11/2"

(END VIEW )(EDGE VIEW )

4'-0"

Figuring Your Ventilation Needs:

V-400E: Square footage of building footprint X .48 = Lineal Feet V-400E needed17


Example: 25' x 50' = 1250 Sq.F.1250 x .48 = 600600 ÷ 17 = 35 L.F. V-400E needed

The above formulas will give the amount of COR-A-VENT ridge vent needed fora 1/150 vent ratio, provided an equal or greater amount of soffit venting is used.For a 1/300 ratio, (building code minimum) use half the amount of ridge vent.Note: Code interpretation may vary. Consult your local building dept.

For the best appearance and performance install COR-A-VENT ridge and soffit ventscontinuously at the ridge and in the soffits.

This material may be duplicated only for the purposes of specifying COR-A-VENT products. No permission is given to duplicate or otherwise copy this material for anyother purpose without the express written permission of COR-A-VENT, Inc.

COR-A-VENT products meet or exceed all nationally recognized building codes for ventilation. COR-A-VENT products are covered under the following patents:5,054,254; 5,328,407; 5,339,582; 5,439,417; 5,542,882; 5,603,657; 5,704,834; 5,803,805; 5,839,059; 5,921,863; 6,039,646; 6,213,868; 6,558,251B2; 6,589,113;6,598,356; D465,839 – additional patents pending.

© 2006 COR-A-VENT, Inc. Made in the USA. S-400 Application Brochure 07/08

Note: Should you need any assistance in designing your ventilation system, fax or mail a sketch andinformation to our technical services department. COR-A-VENT will respond with recommendationsfor your particular building design.

COR-A-VENT® has promoted and taught balanced ventilation from the day westarted. It’s a concept all vent manufactures readily endorse. Unfortunately,that information doesn’t always end up in the hands of the person designing thebuilding or installing the vents. Balanced venting helps insure the performanceyou expect from ridge venting – uniform, increased airflow through the roofcavity without weather infiltration.

Balanced venting: An equal or greater amount of vent opening (sq. in. netfree vent area/NFVA) in thesoffit (intake) than at theridge. For example, ourV-300 products have 13.5sq. in NFVA per lineal foot.To balance this, you need2 soffit/eave/intake ventsof at least 6.75 sq. in. perlineal foot (1/2 of 13.5 ineach overhang).

Balanced venting:Continuous soffit vents arerecommended, especiallyfor venting cathedral ceilings.Wherever there is ridge

vent above, there should be soffit/eave/intake vents on the structure below.Also, COR-A-VENT strongly recommends using of one of our V-300 products(available in 11, 81/2 or 7" widths) on cathedral ceiling and hip roof applications.V-300 delivers 13.5 sq. in. net free vent area. The volume of space to be ventedin cathedrals is smaller. Therefore a lower profile (5/8") vent is called for tofurther reduce the chance for infiltration. When installing a ridge ventsystem, all other vent openings (except soffits) must be closed off.


Maintaining an unrestricted air passageway between the soffit and ridge is crucial to the performance of the vent system, and must not be blocked or restricted.COR-A-VENT recommends a minimum 2" air space between the roof sheathing and vent chute or insulation

Typical Vent Chute Applications

TypicalGable Knee Wall

CathedralCeiling

Balanced ventilation – The right proportion of venting.

①

➁

➂

➄

➃

➃

1. SKYLIGHTS 2. DORMERS3. INTERSECTING BUILDING COMPONENTS4. VALLEYS 5. CHIMNEYS

INLET (BALANCING) VENTS

RIDGE VENT

UNBALANCEDVENTILATION AREAS


Phone: (800) 837-8368 Fax: (800) [email protected] • www.cor-a-vent.com

COR-A-VENT ®

Siding Vent SystemProtects Your

Siding & Finishfrom Moisture Damage

COR-A-VENT’s Siding Vent System is perfect for creating a superior and cost-effective rain screen system behind wood or fi ber-cement siding. The Siding Vent System (SVS) promotes the natural removal of moisture from behind exterior siding and adds life to your home’s exterior. And unlike other rain screen systems, COR-A-VENT’s SVS will save you money, both up front and in the long run. The SVS features SV-3 Siding Vent, a 7/16" thick by 3" tall by 4-foot long strip wrapped with our Enhanced Insect Screen, and the NEW Sturdi-Strips™ plastic furring strips.

INSTALLATION IS EASY – Siding Vents and Sturdi-Strips are made from durable, compression resistant PP plastic sheets that can be power-nailed or screwed on without cracking, splitting or compressing. Sturdi-Strips are the superior and affordable alternative to wood or lath furring strips because they won’t split, warp or rot.

Tyvek is a registered trademark of E.I. du Pont de Nemours and Company or its affi liates.

SV-3

NEW!Sturdi-Strip

SV-3

4' LENGTHS

CRUSH RESISTANT EXTRUDEDPOLYPROPYLENE COREFLUTED AIRWAYS PROVIDEMAXIMUM AIRFLOW ENHANCED INSECT SCREEN

11/2"

3/8"

7/16"

3"

4' L

ENGT

HS

COR-A-VENTSTURDI-STRIP

INTAKE AIR

INTAKE AIR

MOISTURE EXIT

SIDINGCOR-A-VENT

SV-3

#15 FELT PAPEROR HOUSE WRAP

SIDING VENTILATION DETAILW/ COR-A-VENT SV3

EXHAUSTAIR

TOP OF WALLDETAIL

COR-A-VENTSV-3

1/8" OPENING

1/4" OPENING

3/4" COR-A-VENTSV-5

NOTE: FOR 3/4" FURRING STRIPSUSE SV-5 SIDING VENT

ENHANCEDINSECTSCREEN

The Siding Vent System keeps your wall dry.Trapped moisture behind you siding can wreak havoc on your home’s exterior, causing peeling paint, rotting wood, deteriorating underlayment and mold and mildew growth. COR-A-VENT® Siding Vents and Sturdi-Strips allow that moisture to drain out and let air pass through to keep your wall system dry.

COR-A-VENT, INC.

COR-A-VENT Siding Vents will add life to your building materials.Moisture isn’t the only potential problem in your wall system. Surfactants from fiber cement siding and tannins from wood siding can eat away the housewrap underneath. COR-A-VENT Siding Vents and Sturdi-Strips space the siding away from the housewrap to prolong the life of your building materials.

©2008 COR-A-VENT, Inc. 11/10 SV Flier

COR-A-VENT® continuesits tradition of being theLeader in InnovativeRooftop Ventilation® withthe latest addition to itsextensive roof and sidingventilation product lineup,NEW Roof-2-Wall Vent™.Roof-2-Wall Vent doesjust what it says – it’s aventilation package forthe tough-to-vent detailwhere a pitched roofmeets a vertical wall.Roof-2-Wall Vent incorporatesthe Active Weather Foiltechnology and enhancedsnow screen feature of our X-5 ridge vent line to stoprain and snow at the point of entry.

COR-A-VENT® continuesits tradition of being theLeader in InnovativeRooftop Ventilation® withthe latest addition to itsextensive roof and sidingventilation product lineup,NEW Roof-2-Wall Vent™.Roof-2-Wall Vent doesjust what it says – it’s aventilation package forthe tough-to-vent detailwhere a pitched roofmeets a vertical wall.Roof-2-Wall Vent incorporatesthe Active Weather Foiltechnology and enhancedsnow screen feature of our X-5 ridge vent line to stoprain and snow at the point of entry.

INSTALLATION IS EASY — it’s all in the box! Each cartoncontains six 4-foot pieces (24 lineal ft.) of Roof-2-Wall Vent, a25-foot long x 14-inch wide roll of flashing, one bag of 21/2"nails and four EC-400 Roof-2-Wall end caps.

INSTALLATION IS EASY — it’s all in the box! Each cartoncontains six 4-foot pieces (24 lineal ft.) of Roof-2-Wall Vent, a25-foot long x 14-inch wide roll of flashing, one bag of 21/2"nails and four EC-400 Roof-2-Wall end caps.

Tyvek is a registered trademark of E.I. du Pont de Nemours and Company or its affiliates.

Roof-2-Wall Vent provides 8.5 sq. in. Net Free Vent Area (NFVA) per lineal foot

4. Cap or cover Roof-2-Wall assembly with shingle tabs or heavy-gauge/decorative metal cap. Be sure to caulk all ends and joints toensure a water-tight installation.

1. Start by cutting 1" wide clear slot in roof deck at or near thetop. Stop slot no less than 6" from the ends of the roof section tobe ventilated. In areas that have seismic requirements, 1" holesmay be drilled. Spacing to be determined by local building officials.

2. Apply 3/8" bead of flexible caulk (NOT roofing cement) beneathRoof-2-Wall™ Vent pcs. and nail down with 21/2" nails provided*. Run vent atleast 6" past slot in decking and close off ends with EC-400 Roof-2-WallEnd Caps provided. Use a flexible caulk to seal all seams, then runanother 3/8" bead of flexible caulk along the top of all vent pcs.

3. Use Roof-2-Wall flashing provided to cover vent, up onto wall.Nail flashing securely to the wall and overlap flashing with housewrapor felt paper/water-proof membrane.

©2006 COR-A-VENT, Inc. 10/11 Roof-2-Wall Flier

NOTE: Installer isresponsible for sealingends of vent for eachspecific application.Due to the wide variety ofmaterial choices and possibleinstallation options, it is theinstaller’s responsibility to sealthe vent assembly’s ends withappropriate method and materialsto prevent weather infiltration.

A minimum 3/12 roof pitch is required for Roof-2-Wall application.

Add 3/8" bead offlexible caulk

beneath & on topof vent

See note below

DO NOT cut slotwithin 6" of

any end point

IMPORTANT: DO NOToverlap edge of vent by

more than 1/2"

Close endswith EC-400Roof-2-Wall

End CapCut 1" slot

* Be sure to use nails long enough to penetrate vent and roof deck.Heavyweight, architectural and re-roof installations may require alonger nail than the 21/2" ones provided.

COR-A-VENT®

Roof-2-Wall™ Installation Instructions.One person can easily install the handy four-foot Roof-2-Wall sections. All you need is a hammer, circular saw, chalk line, utility knife,tape measure and a caulking gun. These instructions are typical for a standard shingle roof application. Check our web site (www.cor-a-vent.com)or call our technical dept. for advice on your specialized application, or send us a print and we’ll “mark up” where and how to vent it.

IMPORTANT – For AWF toclose properly, roof coveringmust not overlap edge of vent

by more than 1/2".

IMPORTANT – For AWF toclose properly, roof coveringmust not overlap edge of vent

by more than 1/2".

Caulk all flashing seamsCaulk all flashing seams IMPORTANT: DO NOToverlap edge of vent by

more than 1/2"

DO NOT cut slotwithin 6" of

any end point

Typical Counter Flashing(This flashing not provided

in Roof-2-Wall™ kit.)

Typical Counter Flashing(This flashing not provided

in Roof-2-Wall™ kit.)

Cut 1" slot

Add 3/8" bead offlexible caulk

beneath & on topof vent

Close endswith EC-400Roof-2-Wall

End Cap

1/2" MAXIMUMOVERHANG ON CAP

CLOSED

OPEN



4. Center shingle cap on vent and nail. Nail line for capshingles is to be 2" – 21/2" up from edge. Continue nailinguntil all vent is covered with ridge caps. Be careful not tooverdrive nail. Nail head should be flush with top of shingle,without indenting it. Pre-forming caps in cold weather helpsavoid cracking.

1. Measure a 3" slot, 11/2" each side of ridge centerline. This allowsfor a 2x ridge board or smaller. Snap chalk lines the entire length ofthe ridge. Cut slot with a circular saw and clean out debris. Set sawdepth so as not to cut roof rafters. Stop the slot 12" short of anyridge end, intersecting ridge or obstruction (such as a chimney). If Architectural Shingles, Shakes or roofing with an irregularsurface is used, apply a bead of caulk to roof deck beforeinstalling vent. This will seal any gaps that could allowweather penetration under the vent.

2. Nail one shingle cap at each end of the ridge, as withconventional application. Slide end cap (E.C.-400) over exposedend on first and last sections of vent, or use the Folded End CapTechnique shown on back page of this brochure. Center firstvent piece on end of ridge and nail through end cap and vent,keeping end of vent 1/2" from end of roof. Continue to tack nailfirst vent piece. Place nails 1/2" from ends, and 2" up fromedge, 3 nails to a side. Repeat this step for starter vent pieceat the other end of the ridge.

3. Continue applying COR-A-VENT, working from ends tomiddle. This technique helps remove any dips or sag in theridge. Align center with previous pieces, making sure ventmatches roof pitch before nailing. Continue nailing until entireridge is covered. Use a utility knife to cut last piece to length.Caulk where bottom edge of end caps rest on roof.

*Standard applications V-300 or V-600 – 3/12 - 16/12 pitch. For steeper pitch/wide ridge beam applications see complete installation sheet or see us on the web at www.cor-a-vent.com.**Nail requirements for standard vent and ridge cap installation: V-600 - 21/2" roofing nail, V-300 - 11/2" (with 3 tab shingles installed on new construction or after complete roof tear off).

Important–close off exposed center openings atboth ridge ends to prevent infiltration.

Be sure to use fasteners** long enough to penetrate vent and roof deck when nailing the vent and ridge cap on.Heavyweight, architectural and re-roof installations require a longer nail than the standard installation.

In high wind areas, use a washer headed nail to prevent shingle cap “blow off”. Or, apply a 1/4" to 3/8" bead ofroof cement between the ridge caps, 3/4" up from the bottom edge of shingles parallel to ridge.

2"

COR-A-VENT®

Installation and Information Guide.Easy Installation:One person can easily install the handy four-foot COR-A-VENT sections.All you need is a hammer, circular saw, chalk line, utility knife, tape measure and a caulking gun.Here’s an installation overview for a standard pitch* gable roof application:

COR-A-VENT Ridge Vents are sized for residential and light commercial buildings up to 60 feet wide.Please call COR-A-VENT before using our ridge vents on buildings wider than 60 feet.

If the ridge length is too short to install the recommended amount of ventilation,COR-A-VENT® V-300E, FAV-20E (Fold-A-Vent®), V-400E, or X-5 may be installed inequal lengths on the upper half of the hips. These instructions can be used for mostshingle, shake or slate applications.

If jack rafters are 16" on center, cut the slot per our ridge installation instructions.If jack rafters are 24" on center, blocking may be needed to prevent the roof sheathingfrom sagging. Cut 2" x 4" blocks 8" long, and using 16-penny nails, nail blocks betweenjack rafters and flush with bottom of roof sheathing. Cut the slot per our ridge installationinstructions. The blocks will provide support for the roof sheathing. Nail roof sheathingto blocks with 8-penny nails. See Fig. A below. Note: When using blocking, allowfor a loss of 25% in ventilation due to the blocks.

The slot normally does not need to be cut more than half way down the hipsfor open attic roofs. The vent may be run all the way down to the end of the rooffor appearance reasons, BUT DO NOT CUT A SLOT UNDER IT! This will insurethat the air is drawn in from the soffit inlet vents and exhausted out through theridge and/or hip vents.

If it is an ALL cathedral ceiling roof then the slot must not be cut any closerthan 3 feet up from the outside wall of the building. This will prevent any icebuild up from leaking back into the building. In areas that receive heavy snowfall,the slot should stop 6 feet up from the outside wall of the house. The vent maybe run all the way down to the end of the roof for appearance reasons, BUT DO NOTCUT A SLOT UNDER IT! See Fig. B below for details on how to cut the ventwhere the hips and ridge come together. The vent can be cut with a utilityknife. Caulk all joints with black silicon caulking. Also, caulk end joints on thevent coming up the hip. Using the 20-foot FAV-20E (Fold-A-Vent) will eliminatemost joints on the hip itself. (See main drawing below.)

If 3 in 1 shingles are used, run a 3/8" bead of silicon caulking down each side ofthe slot, centered on the nailing surface of the vent. This will insure that the vent is sealeddown across the shingle courses and prevent water from weeping in under the vent.

If Heavy Weight Shingles, Shakes, Slate or Tiles are used: see Fig. Cbelow for a detail on how to install a batten strip to provide a level surface for thevent to sit on. Batten strips need to be as thick as the thickest point of the roofing.There MUST NOT BE ANY GAPS UNDER THE VENT or water may leak in.

Hip Installation Instructions End Views

MINIMUM ROOF PITCH FOR INSTALLATION – 5/12

COR-A-VENT SPECIALTY APPLICATIONS

S-400 STRIP VENTEAVE/SOFFIT

10 sq. in. NFVA/Lineal Foot

1"

1 1/2"

PS-400SOFFIT VENT


1"

3/4"

RS-400 RAFT-A-VENTOPEN RAFTER VENT

18.7 sq. in. NFVA/221/2" Piece

1"

1 1/2"

PURLIN VENTMETAL ROOFING/SIDING10 sq. in. NFVA/Lineal Foot

1"

3"

IN-VENT6.75" sq. in. NFVA/Lineal Foot

11"

1"

1 3/4"

3"

7/16"

SV-3SIDING VENT5 sq. in. NFVA/Lineal Foot

3"

13/16"

SV-5SIDING VENT9 sq. in. NFVA/Lineal Foot

Insect Screen

COR-A-VENT RIDGE VENTS W/ENHANCED SNOW SCREEN END VIEWS TYPICAL

COR-A-VENT RIDGE VENTS NON-ENHANCEDEND VIEWS TYPICAL

4 1/4"8 1/2"

4 1/4"

1 3/4 " 1 3/4"A B A

V-400E 8 1/2"17 sq. in. NFVA/Lineal Foot

3/4"

2 1/2" 2 1/2"A B AV-300E 11" & FAV-20E 11"13.5 sq. in. NFVA/Lineal Foot

5/8"

5 1/2" 5 1/2"11"

2 1/2" 2 1/2"A B A

5/8"

5 1/2" 5 1/2"11"

2 1/4"A B A

5 1/2"

X-5 11" W/AWF17 sq. in. NFVA/Lineal Foot

3/4"

5 1/2"

2 1/4"

11"

4 1/4"

1 3/4"

8 1/2"

A B A

X-5 8 1/2" W/AWF17 sq. in. NFVA/Lineal Foot

4 1/4"

3/4"5/16"

5/8"

1 7/8" A B AV-300E 8 1/2" & FAV-20E 8 1/2"

13.5 sq. in. NFVA/Lineal Foot

4 1/4"8 1/2"

4 1/4"

2"

A B AV-600 11"


5 1/2" 5 1/2"11"

1"

2"

1 5/8"A B A

V-600 8 1/2"20 sq. in. NFVA/Lineal Foot

4 1/4"8 1/2"

4 1/4"

1"

1 5/8"

V-300 11" & FAV-20 11"13.5 sq. in. NFVA/Lineal Foot

V-300 8 1/2" & FAV-20 8 1/2"13.5 sq. in. NFVA/Lineal Foot

5/8"

3 1/2"7"

3 1/2"

A B A

V-300 7" & FAV-20 7"13.5 sq. in. NFVA/Lineal Foot

2" 2"

V-600TE10 sq. in. NFVA/Lineal Foot

V-600T10 sq. in. NFVA/Lineal Foot

3 1/4"

1"

A B AV-400E 11"


2 1/4" 2 1/4"

3/4"

5 1/2" 5 1/2"11"

1 3/4" 1 3/4"

5/16"

1 3/4"

1 7/8"

2"

3 1/4"

1"

2"

5/8"

1 7/8" A B A

4 1/4"8 1/2"

4 1/4"

1 7/8"

2 1/4"

5 1/8"

ROOF-2-WALL VENT8.5 sq. in. NFVA/Lineal Foot

3/4"

* A=5/16" * B=3/16" AWF=Active Weather Foil

10¨

COR-A-VENT® continually develops and improves applications tomeet the growing demands of architecture and new roofing materials. The specialized details on this page have been proven in thousands of real world installations. We don’t experiment on your job.

Call our technical dept. for advice on your special application. Or, sendus a print and we’ll “mark up” where and how to vent it. Our Enhancedproducts can be substituted whenever an extra measure ofprotection is needed.

RIDGE BOARD

RAFTER

SHEATHING

1"

SHINGLES FELT PAPER

AIR

RIDGE CAP

V-300 11"

RAFTER

V-300/V-600 Steep Pitch Application (Standard)

EXHAUST AIR

FEPA

SH

EXHAUST

1"

TRUSS

FELT PAPER

CEDAR SHAKES

CEDAR RIDGE CAP V-300 81/2"

ROOF SHEATHING (1/2" TYPICAL)

AIR

FLOW

BEAD OF CAULKING

BEAD OF CAULKING

FELT PAPER

V-300 81/2"/FAV 81/2" Ridge Application V-30

FLR

TRUSS OR

RAFTER

TILE ROOF

AIR

FLO

W

CAP TILE

V-600T ROOF SHEATHING

1/2" TYP. FELT PAPER

TILE ROOF

METAL AIR DAM FLASHING DETAIL

B 7/8" MIN. OPENING REQUIRED FOR PROPER VENTILATION

EXHAUST AIR

A

A

A

A

CEMENT MORTAR OPTIONAL

3"

MIN.

4"

1"

40˚

1/32"

METAL AIR DAM FLASHING DETAIL PAT. NO. 5-339-582

B

V-600T – "S" Tile Application (W/Air Dam Flashing Detail)

LOW PROFILE CAP NOTE: IF CAP NEEDS TO BE WIDER,

V-600 CAN BE SPLIT INTO HALF PIECES

FASTENERS TYP.

METAL ROOF WITH STANDING SEAM

HOT AIR

EXHAUST AIR

V-600 RIDGE VENT

1 3/4" MIN. OP'G

7/8" MIN. OP'G

V-600 11" – Architectural Metal Roof Application

“Z” CLOSURE

ROOFING

FELT PAPER

ROOF SHEATHING

DRIP EDGE

S-400 STRIP VENT

SIDING

WALL

RAFTER

VENTILATION CHUTE

AIR FLOW

INSULATION

FASCIA BOARD

AIR

S-400 Strip Vent – Narrow Overhang Application

RAFTER RAFTER

FELT PAPER

SHINGLES SHEATHING

1"

AIR

RIDGE BOARD

V-600 Half Piece Wide Ridge Application WIDE RIDGE CAP

FLASHING

V-600 HALF PIECE

V-600 HALF PIECE

EXHAUST AIR

CEDARSHAKES

FELTPAPER

JACK RAFTER

CEDAR RIDGE CAP

EXHAUST

FELT PAPER

AIR

FLOW

7/8"

SHEATHING

HIP RAFTER

1 1/4" MAX BATTEN DIM.

AA

A

BATTEN STRIP, TO BE DOUBLE THICKNESS OF SHAKES AT HIP

L)

V-300E 81/2"/FAV-E 81/2" Hip Application – End View

CAULKINGV-300E 81/2"

ENHANCEDSNOW SCREEN™

TILE CAP V-300 81/2" 7/8" MIN. OPENING REQUIRED

FOR PROPER VENTILATION A

TRUSS OR

RAFTER

TRUSS OR

RAFTER

EXHAUST AIR

AIR

FLO

W FELT PAPER

FLAT TILE ROOF 2"

ROOF SHEATHING (1/2" TYP.) A

A

D V-300 81/2" Flat Tile Application

WALL

FLASHING

RAFTEROR TRUSS

1"SLOT

AIR

FLO

W

STANDINGSEAMMETALROOFING

CAULKING

INSULATION

ENHANCEDSNOW SCREEN

METALSIDING

7/8" MIN. OP'G

EXHAUST AIR

V-600TE

V-600TE Standing Seam ApplicationRoof to Wall

AIR FLOW

WALL

RAFTER

VENTILATION CHUTE

SIDING

FASCIA BOARD

S-400 STRIP VENT

SOFFIT

DRIP EDGE

ROOFING

FELT PAPER

ROOF SHEATHING

AIR

INSULATION

S-400 Strip Vent – Wide Overhang Application

ROOF-2-WALL VENT

WALL

ENHANCEDSNOW SCREEN™

1"SLOT

RAFTER OR TRUSS

AIR

FLOW

SHEATHING

SIDING

EXHAUST AIR

SHINGLES

CAULKINGSHEATHING FELT PAPER

FLASHING

MAXIMUM 1/2'' CAP SHINGLEOVERHANG FOR AWFTO CLOSE PROPERLY

Roof-2-Wall Vent™Roof to Wall Application

Shingle Roof

2x4WALL

INSULATION

1" AIROPENINGTYP.

RAFTER

AIR

FLOW

CAP

ROOFUNDERLAYMENT

S-400STRIPVENT

EXHAUSTAIR

S-400 Shed Roof Application

ALUM.DRIP EDGE

TRIM

BLOCKING

BLOCKING

FASCIA

SIDING

SHEATHING

SHEATHING

SHINGLES

RECOMMENDED2" MIN.

AIR PATH

X-5 Unequal Pitch Application

INSULATION

INSULA

TIO

N

12 2

1" AIR OPENING

TYP.

2x6 RAFTER

2x6 RAFTER

CAP FLASHING

CAULKING SHEATHING

ROOF COVERING

NOTE: NO VENT ON LOW SLOPE SIDE OF ROOF. WHEN ROOF PITCH IS LESS THAN 3/12.

AIR FLOW

AIR F

LOW

12

15

EXHAUST AIR

ENHANCED SNOW SCREEN™

X-5 HALF PIECE

Alternate Installation Examples:

V-600TEEXHAUST

AIR

HEAVY FELT PAPEROR WATERPROOF MEMBRANE

FASTENERS, TYP.

7/8" MIN. OP'G

1 3/4" MIN. OP'G

LOW PROFILE CAP

BASEFLASHING

ENHANCEDSNOW

SCREEN™

METAL ROOFING & WIDE RIDGE CAP.USE WHEN CAP IS OVER 12"

V-600TE Standing Seam Application

V-600TE

STANDING SEAMMETAL ROOF

AIRFLOW

V-600T – Profile Metal Roof Application

METAL ROOF CAP

PROFILE PANEL METAL ROOFING

SHEATHING

FELT PAPER

TRUSS AIR

FLOW

EXHAUST AIR

METAL FLASHING

FOAM CLOSURE

V-600T RIDGE VENT

HEAVY FELT PAPER OR WATERPROOF MEMBRANE

Our website contains a complete listing of application details in .PDF and .DWG formats for viewing or downloading.


Balanced Ventilation is not only having an equal amount of ridge and soffit vents in net free inches, buthaving the soffit and ridge vents balance each other on the structure. Wherever there is ridge vent above,there should be soffit/eave/intake vents on the structure below.

Call our technical service dept. for help with anystandard or specialty ridge or soffit applications.

Important notes: COR-A-VENT ridge vents should always be installed with soffit/eave/intake vents of equal or greater area.All other vent openings (except soffits) should be closed off. The air passage way or “Ventilation Chute” between the inlet(soffit/eave/intake) and the outlet (ridge) vent must not be blocked or restricted.

Figuring Your Ventilation Needs:V-600 = 20 Sq. inches NFVA/lineal foot. V-300 = 13.5 Sq. inches NFVA/lineal foot.

V-600: Square footage of building footprint X .48 = Lineal Feet V-600 needed20


Example: 25' x 50' = 1250 Sq.F. 1250 x .48 = 600 600 ÷ 20 = 30 L.F. V-600 needed

The above formulas will give the amount of COR-A-VENT ridge vent needed for a 1/150 vent ratio, provided an equal or greater amount of soffit venting is used.For a 1/300 ratio, (building code minimum) use half the amount of ridge vent. Note: Code interpretation may vary. Consult your local building dept.

COR-A-VENT Folded End Cap Instructions:

1. Turn vent piece (V-300 shown) over so routed slot is facing up. Use utility knifeto cut out a "V" shaped notch in one end of vent.

For the best appearance, install COR-A-VENT continuously the entire length of the ridge.

4. Nail vent pieces to roof per instructions above. Be sure to caulk between bottom edge of vent and roof at both ends of the ridge.

Be careful not to touch knife blade. Always cut in a direction awayfrom yourself. Wear proper hand and eye protection.

3. Fold end flap under and secure with a roofing nail – 2" for V-300 or 21/2" for V-600. This allows for the nail to penetrate an extra layer of vent material.

13/4"V-300

2"V-600

2. Measure 13/4" from end of vent and make a parallel cut through bottom 3 layers. For V-600, measure 2" from end and cut through bottom 5 layers. Removeloose pieces. Be careful not to cut off top layer!!

©2006 COR-A-VENT, Inc. 06/09 4-Page Installation Instructions

B

B

A

A

STEP 3: Fold Over Flap "B" 90˚ On Perforated Line.

Folded End Cap

End Cap Reversed With Front Side Out,Ready For Application To End Of Vent.

Front Side

STEP 2: Fold Over Flap "A" 90˚ On Perforated Line.

STEPS 1-3 Explain How To Fold The EC-400 End CapPrior To Applying To End Of Vent On The Roof.

STEP 1: Lay Down End Cap With Matte Side Up.

“This material may be duplicated only for the purposes of specifying COR-A-VENT® products. No permission is given to duplicate or otherwise copy this material for any other purposewithout the express written permission of COR-A-VENT, Inc.”

COR

-A-V

EN

T®

continually develops and improves applications to

meet the grow

ing demands of architecture and new

roofing materials.

The specialized details on this page have been proven in thousands

of real world installations. W

e don’t experiment on your job.

Call our technical dept. for advice on your special application. Or, send

us a print and we’ll “m

ark up” where and how

to vent it. Our E

nhancedproducts can be substituted w

henever an extra measure of

protection is needed.

If the ridge length is too short to install the recomm

ended amount of ventilation,

CO

R-A

-VE

NT

®V-300E

, FAV-20E (Fold-A

-Vent®), V-400E

, or X-5 m

ay be installed inequal lengths on the upper half of the hips. T

hese instructions can be used for most

shingle, shake or slate applications.If jack rafters are 16" on center, cut the slot per our ridge installation instructions.

If jack rafters are 24" on center, blocking may be needed to prevent the roof sheathing

from sagging. Cut 2" x 4" blocks 8" long, and using 16-penny nails, nail blocks betw

eenjack rafters and flush w

ith bottom of roof sheathing. Cut the slot per our ridge installation

instructions. The blocks will provide support for the roof sheathing. N

ail roof sheathingto blocks w

ith 8-penny nails. See Fig. A below

. Note: W

hen using blocking, allowfor a loss of 2

5%

in ventilation due to the blocks.T

he slot normally does not need to be cut m

ore than half way dow

n the hipsfor open attic roofs. T

he vent may be run all the w

ay down to the end of the roof

for appearance reasons, BU

T D

O N

OT

CU

T A

SLO

T U

ND

ER

IT! T

his will insure

that the air is drawn in from

the soffit inlet vents and exhausted out through theridge and/or hip vents.

If it is an AL

L cathedral ceiling roof then the slot m

ust not be cut any closerthan 3 feet up from

the outside wall of the building. T

his will prevent any ice

build up from leaking back into the building. In areas that receive heavy snow

fall,the slot should stop 6 feet up from

the outside wall of the house. T

he vent may

be run all the way dow

n to the end of the roof for appearance reasons, BU

T D

O N

OT

CU

T A

SL

OT

UN

DE

R IT

! See F

ig. B below

for details on how to cut the vent

where the hips and ridge com

e together. The vent can be cut w

ith a utilityknife. C

aulk all joints with black silicon caulking. A

lso, caulk end joints on thevent com

ing up the hip. Using the 20-foot FA

V-20E (F

old-A-Vent) w

ill eliminate

most joints on the hip itself. (S

ee main draw

ing below.)

If 3 in 1 shingles are used,run a 3/8" bead of silicon caulking down each side of

the slot, centered on the nailing surface of the vent. This will insure that the vent is sealed

down across the shingle courses and prevent w

ater from w

eeping in under the vent.If H

eavy Weight S

hingles, Shakes, S

late or Tiles are used:see Fig. C

below for a detail on how

to install a batten strip to provide a level surface for thevent to sit on. B

atten strips need to be as thick as the thickest point of the roofing.T

here MU

ST N

OT

BE

AN

Y GA

PS U

ND

ER

TH

E V

EN

T or w

ater may leak in.

Hip Installation Instructions

RID

GE

B

OA

RD

RA

FT

ER

SH

EAT

HIN

G

1"

SH

ING

LES

F

ELT

PA

PE

R

AIR RID

GE

CA

P

V-300 11"

RA

FT

ER

V-300/V-600 Steep P

itch Application

(Standard)

EX

HA

US

T A

IR

FE

PA

SH

EX

HAU

ST

1"

TR

US

S

FE

LT

PAP

ER

CE

DA

R

SH

AK

ES

CE

DA

R R

IDG

E C

AP

V-300 8

1/2"

RO

OF

S

HE

ATH

ING

(1/2" T

YP

ICA

L)

AIR FLOW

BE

AD

OF

C

AU

LKIN

G

BE

AD

OF

C

AU

LKIN

G

FE

LT PA

PE

R

V-300 81/2"/FA

V 8

1/2" Ridge A

pplication V-30

FLR

TR

US

S

OR

R

AF

TE

R

TILE

R

OO

F

AIR FLOW

CA

P T

ILE

V-600T

RO

OF

SH

EAT

HIN

G

1/2" TY

P. F

ELT

PAP

ER

T

ILE R

OO

F ME

TAL A

IR

DA

M F

LAS

HIN

G

DE

TAIL

B

7/8" MIN

. OP

EN

ING

RE

QU

IRE

D

FO

R P

RO

PE

R V

EN

TILAT

ION

EX

HA

US

T A

IR

A

A

A

A

CE

ME

NT

M

OR

TAR

O

PT

ION

AL

3"

MIN

. 4"

1"

40˚

1/32"

ME

TAL A

IR D

AM

F

LAS

HIN

G D

ETA

IL PAT. N

O. 5-339-582

B

V-600T – "S

" Tile A

pplication (W

/Air D

am F

lashing Detail)

LOW

PR

OF

ILE C

AP

N

OT

E: IF

CA

P N

EE

DS

TO B

E W

IDE

R,

V-600 C

AN

BE

SP

LIT IN

TO

HA

LF P

IEC

ES

FAS

TE

NE

RS

TY

P.

ME

TAL R

OO

F W

ITH

S

TAN

DIN

G S

EA

M

HOT

AIR

EX

HAU

ST A

IR

V-600 RID

GE

VE

NT

1 3/4" M

IN. O

P'G

7/8" M

IN.

OP

'G

V-600 11" – Architectural M

etal Roof A

pplication

“Z” CLO

SU

RE

RO

OF

ING

FE

LT PA

PE

R

RO

OF

S

HE

ATH

ING

DR

IP E

DG

E

S-400

ST

RIP

VE

NT

SID

ING

WA

LL RAFTER

VENTILATIO

N C

HU

TE

AIR FLO

W

INS

ULAT

ION

FAS

CIA

B

OA

RD

AIR

S-400 S

trip Vent – Narrow

Overhang A

pplication

RA

FT

ER

R

AF

TE

R

FE

LT

PAP

ER

SH

ING

LES

S

HE

ATH

ING

1"

AIR

RID

GE

B

OA

RD

V-600 Half P

iece Wide R

idge Application

WID

E R

IDG

E C

AP

FLA

SH

ING

V-600 H

AL

F P

IEC

E

V-600 H

AL

F P

IEC

E

EX

HA

US

T

AIR

CE

DA

RS

HA

KE

S

FE

LTPA

PE

R

JAC

K R

AF

TE

R CE

DA

R R

IDG

E C

AP

EX

HA

US

T

FE

LT

PAP

ER

AIR FLOW

7/8"

SH

EAT

HIN

G

HIP

RA

FT

ER

1 1/4" M

AX

B

ATTEN

D

IM.

AA

A

BAT

TE

N S

TR

IP, TO B

E

DO

UB

LE T

HIC

KN

ES

S

OF

SH

AK

ES

AT H

IP

L) V-300E 8

1/2"/FAV-E

81/2" H

ip Application – E

nd View

CA

ULK

ING

V-300E 8

1/2"

EN

HA

NC

ED

SN

OW

SC

RE

EN

™

TILE

CA

P

V-300 81/2"

7/8" MIN

. OP

EN

ING

RE

QU

IRE

D

FO

R P

RO

PE

R V

EN

TILAT

ION

A

TR

US

S

OR

R

AF

TE

R

TR

US

S

OR

R

AF

TE

R

EX

HA

US

T

AIR

AIR FLOW

FE

LT PA

PE

R

FLAT

TILE

R

OO

F

2"

RO

OF

SH

EAT

HIN

G

(1/2" TY

P.) A

A

D

V-300 81/2" F

lat Tile A

pplication

WA

LL

FLA

SH

ING

RA

FT

ER

OR

TR

US

S1"

SLO

T

AIR FLOW

STA

ND

ING

SE

AM

ME

TAL

RO

OF

ING

CA

ULK

ING

INS

ULAT

ION

EN

HA

NC

ED

SN

OW

SC

RE

EN

ME

TAL

SID

ING

7/8" MIN

. OP

'G

EX

HA

US

T A

IR

V-600TE

V-600TE

Standing S

eam A

pplicationR

oof to Wall

AIR FLOW

WA

LL

RAFTER

VENTILATIO

N C

HU

TE SID

ING

FAS

CIA

B

OA

RD

S-400

ST

RIP

VE

NT

SO

FF

IT

DR

IP E

DG

E

RO

OF

ING

FE

LT PA

PE

R

RO

OF

S

HE

ATH

ING

AIR

INS

ULAT

ION

S-400 S

trip Vent – Wide O

verhang Application

RO

OF

-2-WA

LL

VE

NT

WA

LL

EN

HA

NC

ED

SN

OW

SC

RE

EN

™

1"S

LOT

RA

FT

ER

OR

TR

US

S

AIR FLOW

SH

EAT

HIN

G

SID

ING

EX

HA

US

T A

IR

SH

ING

LES

CA

ULK

ING

SH

EAT

HIN

G

FE

LT PA

PE

R

FLA

SH

ING

MA

XIM

UM

1/2'' CA

P S

HIN

GLE

OV

ER

HA

NG

FO

R A

WF

TO C

LOS

E P

RO

PE

RLY

Roof-2-W

all Vent™R

oof to Wall A

pplicationS

hingle Roof

2x4W

ALL

INSU

LATION

1" AIR

OP

EN

ING

TY

P.

RA

FT

ER

AIR

FLOW

CA

P

RO

OF

UN

DE

RLAY

ME

NT

S-400

ST

RIP

VE

NT

EX

HA

US

TA

IR

S-400 S

hed Roof A

pplication

ALU

M.

DR

IP E

DG

E

TR

IM

BLO

CK

ING

BLO

CK

ING

FAS

CIA

SID

ING

SH

EAT

HIN

G

SH

EAT

HIN

G SH

ING

LES

RE

CO

MM

EN

DE

D2" M

IN.

AIR

PATH

X-5 U

nequal Pitch A

pplication

INS

ULAT

ION

INSULATION

12 2

1" AIR

O

PE

NIN

G

TY

P.

2x6 R

AF

TE

R

2x6 R

AF

TE

R

CA

P

FLA

SH

ING

CA

ULK

ING

S

HE

ATH

ING

RO

OF

C

OV

ER

ING

NO

TE

: NO

VE

NT

ON

LOW

SLO

PE

SID

E O

F R

OO

F.

WH

EN

RO

OF

PIT

CH

IS

LE

SS

TH

AN

3/12.

AIR

FLO

W

AIR FLOW

12

15

EX

HA

US

T

AIR

E

NH

AN

CE

D

SN

OW

S

CR

EE

N™

X-5

HA

LF

PIE

CE

Alternate Installation E

xamples:

V-600TE

EX

HA

US

TA

IR

HE

AV

Y F

ELT

PAP

ER

OR

WAT

ER

PR

OO

F M

EM

BR

AN

EFA

ST

EN

ER

S, T

YP.

7/8" MIN

. OP

'G1 3/4" MIN

. OP

'G

LOW

PR

OF

ILE C

APBA

SE

FLA

SH

ING

EN

HA

NC

ED

SN

OW

SC

RE

EN

™

ME

TAL R

OO

FIN

G &

WID

E R

IDG

E C

AP.

US

E W

HE

N C

AP

IS O

VE

R 12"

V-600TE

Standing S

eam A

pplicationV-600TE

STA

ND

ING

SE

AM

ME

TAL R

OO

F

AIR

FLO

W

V-600T – P

rofile Metal R

oof Application

ME

TAL R

OO

F C

AP

PR

OF

ILE PA

NE

L M

ETA

L RO

OF

ING

SH

EAT

HIN

G

FE

LT PA

PE

R

TR

US

S

AIR

F

LOW

EX

HA

US

T A

IR

ME

TAL

FLA

SH

ING

FO

AM

C

LOS

UR

E

V-600T R

IDG

E V

EN

T

HE

AV

Y F

ELT

PAP

ER

O

R W

ATE

RP

RO

OF

ME

MB

RA

NE

End V

iews

MIN

IMU

M R

OO

F P

ITCH

FO

R IN

STA

LL

AT

ION

– 5/1

2

CO

R-A

-VE

NT

SP

EC

IALT

Y A

PP

LIC

AT

ION

S

S-400 S

TR

IP V

EN

TE

AV

E/S

OF

FIT

10 sq. in

. NF

VA

/Lin

eal Fo

ot

1"

1 1/2"

PS

-400S

OF

FIT

VE

NT

10 sq. in

. NF

VA

/Lin

eal Fo

ot

1"

3/4"

RS

-400 RA

FT

-A-V

EN

TO

PE

N R

AF

TE

R V

EN

T18.7 sq

. in. N

FV

A/2

21/2" P

iece

1"

1 1/2"

PU

RL

IN V

EN

TM

ET

AL

RO

OF

ING

/SID

ING

10 sq. in

. NF

VA

/Lin

eal Fo

ot

1"

3"

IN-V

EN

T6.75" sq

. in. N

FV

A/L

ineal F

oo

t

11"

1"

1 3/4"

3"

7/16"SV

-3S

IDIN

G V

EN

T5 sq

. in.

NF

VA

/Lin

eal Fo

ot

3"

13/16"

SV

-5S

IDIN

G V

EN

T9 sq

. in.

NF

VA

/Lin

eal Fo

ot

Insect S

creen

COR-A-VENT RIDGE VENTS W/ENHANCED SNOW

SCREEN END VIEW

S TYPICAL

COR-A-VENT RIDGE VENTS NON-ENHANCEDEND VIEW

S TYPICAL

4 1/4"8 1/2"

4 1/4"

1 3/4 "1 3/4"

A B

A

V-400E 8 1/2"

17 sq. in

. NF

VA/L

ineal F

oo

t

3/4"

2 1/2"2 1/2"

A B

AV

-300E 11" &

FA

V-20E

11"13.5 sq

. in. N

FV

A/L

ineal F

oo

t

5/8"

5 1/2"5 1/2"

11"

2 1/2"2 1/2"

A B

A

5/8"

5 1/2"5 1/2"

11"

2 1/4"A

B A

5 1/2"

X-5 11" W

/AW

F17 sq

. in. N

FV

A/L

ineal F

oo

t

3/4"

5 1/2"2 1/4"

11"

4 1/4"

1 3/4"

8 1/2"

A B

A

X-5 8 1/2" W

/AW

F17 sq

. in. N

FV

A/L

ineal F

oo

t

4 1/4"

3/4"5/16"

5/8"

1 7/8"A

B A

V-300E

8 1/2" & F

AV

-20E 8 1/2"

13.5 sq. in

. NF

VA

/Lin

eal Fo

ot

4 1/4"8 1/2"

4 1/4"

2"

A B

AV

-600 11"20 sq

. in. N

FV

A/L

ineal F

oo

t

5 1/2"5 1/2"

11"

1"

2"

1 5/8"A

B A

V-600 8 1/2"

20 sq. in

. NF

VA

/Lin

eal Fo

ot

4 1/4"8 1/2"

4 1/4"

1"

1 5/8"

V-300 11" &

FA

V-20 11"

13.5 sq. in

. NF

VA

/Lin

eal Fo

ot

V-300 8 1/2" &

FA

V-20 8 1/2"

13.5 sq. in

. NF

VA

/Lin

eal Fo

ot

5/8"

3 1/2"7"

3 1/2"

A B

A

V-300 7" &

FA

V-20 7"

13.5 sq. in

. NF

VA

/Lin

eal Fo

ot

2"2"

V-600T

E10 sq

. in. N

FV

A/L

ineal F

oo

t

V-600T

10 sq. in

. NF

VA

/Lin

eal Fo

ot

3 1/4"

1"

A B

AV

-400E 11"

17 sq. in

. NF

VA

/Lin

eal Fo

ot

2 1/4"2 1/4"

3/4"

5 1/2"5 1/2"

11"

1 3/4"1 3/4"

5/16"

1 3/4"

1 7/8"

2"

3 1/4"

1"

2"

5/8"

1 7/8"A

B A

4 1/4"8 1/2"

4 1/4"1 7/8"

2 1/4"

5 1/8"

RO

OF

-2-WA

LL

VE

NT

8.5 sq. in

. NF

VA

/Lin

eal Fo

ot

3/4"

* A

=5/16" * B

=3/16" AW

F=A

ctive Weath

er Fo

il

2962-InstallSht4p06-09.qxd 6/24/09 3:34 P

M P

age 3

COR-A-VENT, Inc.

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