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ADMINISTRATION & FINANCE
FACILITIES MANAGEMENT
SPECIFICATIONS FOR THE
CONSTRUCTION OFCOLUMBUS CENTER ROOF REPLACEMENT
UNIVERSITY PROJECT # 12-119
BUILDING INVENTORY No.
VOLUME 1: PROJECT SPECIFICATIONS
July 24, 2013________________________________________________________________________
Owner Board of Public Works
University of Maryland Baltimore County
1000 Hilltop Circle
Baltimore, Maryland 22150
Martin OMalley, Governor
Peter Franchot, Comptroller
Nancy K. Kopp, Treasurer
Maryland General AssemblyThomas V. Miller Jr, Senate President
Michael Erin Busch, House Speak
________________________________________________________________________
ArchitectGant Brunnett Architects
15 West Mulberry Street
Baltimore, MD 21201
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PROJECT DIRECTORY 00002 - 1
Columbus Center Roof Replacement
Baltimore, Maryland
Date: July 24, 2013
Team Member Contact
Owner
University of Maryland Baltimore County Michael Yates
Office of Facilities Management Phone:410.385.63551000 Hilltop Circle Facsimile:410.385.6345
Baltimore, Maryland 21250 Email:[email protected]
Architects
Gant Brunnett Architects, Inc. John Brunnett, AIA
15 West Mulberry Street Phone:410.234.8444
Baltimore, Maryland 21201 Facsimile:410.234.2964
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TABLE OF CONTENTS Page 1
TABLE OF CONTENTS
DIVISION 0:
SECTION TITLE
00851 DRAWING INDEX 1
DIVISION 1: GENERAL REQUIREMENTS
SECTION TITLE
01010 SUMMARY OF WORK 2
01027 APPLICATIONS FOR PAYMENT 4
01030 ALTERNATES 2
01035 MODIFICATION PROCEDURES 2
01040 COORDINATION 4
01045 CUTTING AND PATCHING 4
01095 REFERENCE STANDARDS & DEFINITIONS 4
01200 PROJECT MEETINGS 4
01270 UNIT PRICES 2
01300 SUBMITTALS 14
01311 SCHEDULES & REPORTS 7
01380 CONSTRUCTION PHOTOGRAPHS 3
01400 QUALITY CONTROL 4
01600 MATERIALS & EQUIPMENT, DELIVERY, STORAGE & HANDLING 5
01631 SUBSTITUTIONS 2
01700 CONTRACT CLOSEOUT 9
DIVISION 5: METALS
SECTION TITLE
05400 COLD FORMED LIGHT GAGE STRUCTURAL STEEL 2
DIVISION 6: WOODS AND PLASTIC
SECTION TITLE
06100 ROUGH CARPENTRY 5
DIVISION 7: THERMAL AND MOISTURE PROTECTION
SECTION TITLE
07520 ASPHALT ROOFING WITH MODIFIED BITUMEN CAP 13
PHOTOS OF EXISTING COPING 3
07600 FLASHING AND SHEET METAL 4
07900 JOINT SEALERS 6
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DRAWING INDEX 00851 - 1
DOCUMENT 00851
DRAWING INDEX
ARCHITECTURAL DRAWINGS
G001 Cover Sheet
A100 Roof Plan, Legend and Notes
A101 Partial Roof Plan A
A102 Partial Roof Plan B
A103 Partial Roof Plan C
A501 Roof Details
A502 Roof Details
END OF SECTION
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COLD FORMED LIGHT GAGE STRUCTURAL FRAMING 05400 - 1
SECTION 05400 - COLD FORMED LIGHT GAGE STRUCTURAL FRAMING
PART 1 - GENERAL
1.1 DESCRIPTION
A. Structural light gage materials including, but not limited to studs, joists, tracks,
bridging, web stiffeners and accessories required for complete installation.
1.2 REFERENCES
A. AISI "Specifications for Design of Cold Formed Steel Structural Members, latest
edition.
B. ASTM A 446-83.
C. American Welding Society (AWS).
1.3 SUBMITTALS
A. Data:
1. Member properties.
B. Erection and Shop Drawings that include:
1. Details.
2. Member location, sizing and marking and properties.3. Manner of making typical and special connections.
4. Member's location relative to walls, spandrel sections, openings or other
construction features.
PART 2 - PRODUCTS
2.1 MATERIALS AND DESIGN
A. Materials of depth, minimum gage section properties, and capacities illustrated by the
Drawings.
B. 14 and 16 gage members formed from steel meeting requirements of ASTM A 446,
Grade D, minimum yield of 50 KSI.
C. 18 and 20 gage members formed from steel meeting requirements of ASTM A 446,
Grade A, minimum yield of 33 KSI.
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2.2 FABRICATIONS
A. Members and accessories formed from steel with G-60 galvanized coating.
B. Cut framing components squarely or at angle to fit squarely against abutting members.
C. Hold members firmly in position until properly fastened.
D. Attach similar components by welding in accordance with approved shop drawings.
E. Weld all connections of stud to stud, stud to track and stud to frame. Make all such
connections using 2-1/8" fillet welds 1-1/2" long unless otherwise noted on drawings.
F. All welding done by certified welders in compliance with the requirements of AWS.
G. Provide continuous steel track at top and bottom of all stud walls. Provide minimum 1row horizontal bridging at mid height of all walls unless additional rows are noted on
contract drawings or required by stud manufacturer. Weld bridging to each flange on
each stud. Details to appear on shop drawings.
H. Weld stud flanges to track. Voids not permitted at top or bottom of stud at track
(typical).
PART 3 - EXECUTION
3.1 ERECTION
A. Erect in accordance with approved erection drawings.
B. Touch up welds and damaged finishes with zinc rich primer.
END OF SECTION
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ROUGH CARPENTRY 06100 - 1
SECTION 06100 - ROUGH CARPENTRY
PART 1 - GENERAL
1.1 DESCRIPTION
A. Section includes:
1. Furnishing and installing rough carpentry, including rough hardware.
2. Rough carpentry consists of wood construction both temporary and permanent
that is not exposed to view in completed building. Rough carpentry work
includes proper installation of grounds, wood or metal, nailing strips, blocking,
etc., necessary or required to produce an adequate and substantial base for
support of finishes, material, fittings and equipment.
3. Rough carpentry includes carpentry work not specified as part of other
sections and which is generally not exposed, except as otherwise indicated.
Types of work in this section include rough carpentry for:a. Wood grounds, nailers, blocking and sleepers
1.2 REFERENCES
A. Lumber Standards:
Comply with PS 20 and with applicable rules of the respective grading and
inspecting agencies for species and products indicated.
1. American Wood Preservers Bureau Standards
2. Western Wood Products Association Use Manual
3. American Plywood Association (APA) Design/Construction Guide
B. Plywood Product Standards:
Comply with PS 1 (ANSI A 199.1) or, for products not manufactured under PS 1
provisions, with applicable APA Performance Standard for type of panel indicated.
1.3 SUBMITTALS
A. Material Certificates:
Where dimensional lumber is provided to comply with minimum allowable unit
stresses, submit listing of species and grade selected for each use, and submit
evidence of compliance with specified requirements. Compliance may be in the
form of a signed copy of applicable portion of lumber producer's grading rulesshowing design values for selected species and grade. Design values shall be as
approved by the Board of Review of the American Lumber Standards Committee.
B. Wood Treatment Data:
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1. Submit treatment manufacturer's instructions for proper use of each type of
treated material.
2. Pressure Treatment: For each type specified, include certification by treating
plant stating chemicals and process used, net amount of preservative retained
and conformance with applicable standards.3. Water-Borne Preservatives: For each type include statement that moisture
content of treated materials was reduced to a maximum of 15% prior to
shipment to the project site.
4. Fire Retardant Treatment: Include certification by treating plant that
treatment material complies with governing ordinances and that treatment will
not bleed through finished surfaces.
1.4 PRODUCT HANDLING
A. Protection:
1. Deliver material to job site and store, in safe area, out of way of traffic andshored up off ground surface.
2. Identify framing lumber by grades, and store each grade separately from other
grades.
3. Protect metals with adequate waterproof outer wrapping.
4. Use extreme care in off loading of lumber to prevent damage, splitting, and
breaking of materials.
5. Delivery and Storage: Keep materials dry at all times. Protect against
exposure to weather and contact with damp or wet surfaces. Stack lumber and
plywood, and provide air circulation within stacks. Do not store materials
directly on the ground.
1.5 JOB CONDITIONS
Coordination: Fit carpentry work to other work; scribe and cope as required for accurate
fit. Correlate location of furring, nailers, blocking, grounds and similar supports to allow
proper attachment of other work.
PART 2 - PRODUCTS
2.1 LUMBER: GENERAL
A. Factory-mark each piece of lumber with type, grade, mill and grading agency,
except omit marking from surfaces to be exposed with transparent finish or withoutfinish.
B. Nominal sizes are indicated, except as shown by detail dimensions. Provide actual
sizes as required by PS 20, for moisture content specified for each use.
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C. Provide dressed lumber, S4S, unless otherwise indicated.
D. Provide kiln-dried lumber 15% maximum moisture content at time of dressing.
2.2 BOARDS (less than 2 thick)
A. Concealed Boards:
Where boards will be concealed by other work, provide lumber of 19% maximum
moisture content (S-Dry) and of Southern Pine No. 2.
2.4 MISCELLANEOUS LUMBER
A. Provide Construction Grade light framing size lumber of any species for support or
attachment of other work including cant strips, bucks, nails, blocking, furring,
grounds, stripping and similar members. Provide kiln-dried lumber with 15%
maximum moisture content.
B. Where rough carpentry work is exposed to the weather, in ground contact, or in
area of high relative humidity, provide fasteners and anchorages with a hot-dip zinc
coating (ASTM A 153)
2.5 MISCELLANEOUS MATERIALS
A. Fasteners and Anchorages:
1. Provide size, type, material and finish as indicated and as recommended by
applicable standards, complying with applicable Federal Specifications for
nails, staples, screws, bolts, nuts, washers and anchoring devices. Providemetal hangers and framing anchors of the size and type recommended by the
manufacturer for each use including recommending nails.
2. Where rough carpentry work is exposed to the weather, in ground contact, or
in area of high relative humidity, provide fasteners and anchorages with a hot-
dip zinc coating (ASTM A 153)
B. Rough Hardware
1. Steel Items:
a. Comply with ASTM A7 or ASTM A36.
b. Use galvanized at exterior locations.
2. Machine bolts: Comply with ASTM A307.3. Lag bolts: Comply with Fed Spec FF-B-561.
4. Nails:
a. Use common except as otherwise noted.
b. Comply with Fed Spec FF-N-1.
c. Use galvanized at exterior locations.
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2.6 WOOD TREATMENT
A. Preservative Treatment:
Where lumber or plywood is indicated as "treated", or is specified herein to be
treated, comply with applicable requirements of AWPA Standards C2 and C9 andof AWPB Standards listed below. Mark each treated item with the AWPB Quality
Mark Requirements.
1. Above Ground Lumber:
a. Pressure treat above ground items with water borne preservatives
complying with AWPB LP-2. After treatment, kiln-dry to a maximum
moisture content of 15%. Treat indicated items and the following:
b. Wood cants, nailers, curbs, blocking, stripping, and similar members in
connection with roofing, flashing, vapor barriers and waterproofing.
c. Wood sills, sleepers, blocking, furring, stripping and similar concealed
members in contact with masonry of concrete.
2.7 OTHER MATERIALS
A. Contractor selects other materials, not specifically described but required for a
complete and proper installation, subject to Architects approval.
PART 3 - EXECUTION
3.1 INSTALLATION
A. General:
1. Discard units of material with defects which might impair quality of work,and units which are too small to use in fabricating work with minimum joints
or optimum joint arrangement.
2. Set carpentry work accurately to required levels and lines, with members
plumb and true and accurately cut and fitted.
3. Securely attach carpentry work to substrate by anchoring and fastening as
shown and as required by recognized standards. Countersink nail heads on
exposed carpentry work and fill holes.
4. Use common wire nails, except as otherwise indicated. Use finishing nails for
finish work. Select fasteners of size that will not penetrate members where
opposite side will be exposed to view or will receive finish materials. Make
tight connections between members. Install fasteners without splitting wood;predrill as required.
B. Wood Grounds, Nailers, Blocking, and Sleepers:
1. Provide wherever shown and where required for screeding or attachment of
other work. Form to shapes as shown and cut as required for true line and
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level of work to be attached. Coordinate location with other work involved.
2. Attach to substrates as required to support applied loading. Countersink bolts
and nuts flush with surfaces, unless otherwise show. Build into masonry
during installation of masonry work. Where possible, anchor to formwork
before concrete placement.3. Provide solid wood blocking concealed within stud wall framing for all wall
mounted toilet accessories, wall and ceiling mounted cabinets, and wall
mounted shelving.
4. Provide permanent grounds of dressed, preservative treated, key beveled
lumber not less than 1-1/2" wide and of thickness required to bring face of
ground to exact thickness of finish material involved. Remove temporary
grounds when no longer required.
END OF SECTION
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ASPHALT ROOFING WITH MODIFIED BITUMENT CAP 07520 - 1
SECTION 07520
ASPHALT ROOFING WITH MODIFIED BITUMEN CAP
PART 1 - GENERAL
1.1 DESCRIPTION OF WORK
A. Extent of built up roofing is indicated on the drawings and is hereby defined to
include non- traffic bearing system intended for weather exposure as primary roofing
as follows:
1. Roof Insulation
3. 2-Ply built up Asphalt roofing with SBS Modified Modified Bitumen Cap
Sheet
1.2 QUALITY ASSURANCE
A. Manufacturer:
1. Obtain primary built up roofing materials from a single manufacturer.
Provide secondary materials as recommended by the manufacturer of the
primary materials.
2. Roofing manufacturer shall be an established manufacturer of type roofing
materials specified, maintaining technically qualified personnel, in the project
area, to review proposed construction, consult at the project site, make
detailed recommendations concerning installation procedures, etc.
B. Installer:
1. A firm with not less than 5 years of successful experience in the installation of
roofing systems identical to those required for this project and which is
licensed by the manufacturer of primary roofing materials.
2. Provide written certification from manufacturer of roofing system that
Installer is approved by manufacturer for installation of specified roofing
system. Submit copy of certification to Architect.
3. Installer shall maintain a full time supervisor at the site of the work at all
times when roofing work is in progress. Supervisor shall have a minimum of
5 years experience as a supervisor of roofing work and 3 years with the samecompany.
C. Pre Roofing Conference:
Prior to installation of roofing and associated work, meet at the project site with
installer, roofing manufacturer, installers of related work, and other entities
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ASPHALT ROOFING WITH MODIFIED BITUMENT CAP 07520 - 2
concerned with roofing installation and performance, including Architect, and
Owner.
1.3 SUBMITTALS
A. Product Data:Submit specifications, installation instructions and general recommendations from
manufacturers of built up roofing system. Include data substantiating that materials
comply with requirements. List of materials with related specifications and product
literature.
Product data describing insulation materials, including shop drawing of insulation
layout.
B. Warranty:
Provide manufacturers certification that roofing systems specified, existing roof
conditions that impact installation, and all of the particular contract requirements,are acceptable to the manufacturer and will not hinder the issuance by the
manufacturer of the specified warranty.
C. Pull-Out Tests:
Submit a complete listing of pull-out tests conducted and the corresponding pull-out
values, signed by the representative conducting the test and the Roofing Applicator
verifying the accuracy of the test.
D. Certifications:
Provide certification of installer by manufacturer and qualifications of supervisor.
1.4 PRODUCT HANDLING, STORAGE AND DELIVERY
A. Deliver material in manufacturer's original containers with labels intact and legible.
B. Deliver bulk shipments with certification of compliance with specifications
including melting point, flash point, application temperature, etc.
C. Select and operate material handling equipment and store materials to keep from
damaging existing construction or applied roofing.
D. Store rolls of felt, cartons and drums of bitumen, all cans and drums of cement,primers, and coatings on end.
E. Store materials on clean, raised platforms.
1. Store and handle materials to protect them from:
2. Moisture, whether due to rain, snow or condensation
3. Damage by construction traffic
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4. Temperatures over 110 degrees Fahrenheit
5. Temperatures below 40 degrees Fahrenheit
6. Direct sunlight
7. Mud, dust, sand, oil, grease and dirt.
Note: Polyethylene is not acceptable as a cover, use opaque tarpaulins.
F. Damaged materials shall be replaced at the Contractor's expense.
G. Immediately remove and dispose of wet materials.
H. Comply with fire, safety, and environmental protection regulations.
I. Materials, including, but not limited to, insulation, roofing plies, and bitumen shall
not be stored on the roof.
1.5 WEATHER CONDITIONS
A. Weather:
1. Proceed with roofing work when existing and forecasted weather conditions
permit work to be performed in accordance with manufacturer's
recommendations and
warranty requirements.
2. Do not apply roofing when ambient temperature is below 40 degrees F or
when wind speed is over 20 miles per hour.
B. Protection:
1. Take special precautions against traffic damage when ambient temperature isabove 80 degree F. Avoid heavy traffic on the work during all phases of
installation.
2. Replace or restore to original condition any materials or work damaged during
construction.
3. Protect exterior building and paving surface with tarpaulins in the area of the
work during roofing work, including tear-off areas, asphalt pipeline, hoists,
dumpster, dump trucks, etc.
4. Lap protective materials at least 6 inches and secure protective coverings
against wind.
5. Leave protective covering in place until roofing work is completed.
6. Protect the building interior from water infiltration at all times. Do not tearoff more roofing than can be replaced by the end of the work day.
1.6 WARRANTY
A. Manufacturer's Warranty:
1. The manufacturer of the roofing system shall issue the warranty for a thirty
(30) year period with No Dollar Limit on replacement costs. This warranty
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shall insure that the roofing system installed remains watertight for thirty
years after Substantial Completion and that the manufacturer guarantees to
correct/repair all leaking roof systems during the warranty period free of
charge.
2. The cost of the manufacturer's warranty shall be included in the Base Bid ofthe Contract and shall be the sole responsibility of the Contractor to obtain.
3. The work of the Contract will not be considered Substantially Complete until
the manufacturer's warranty is issued and the work is found to be acceptable
to the Owner.
B. Installer's Warranty:
Provide Roofing Contractor's written warranty to repair or replace any component
of the roofing system, including but not limited to, roof membrane, insulation,
flashing, metal coping and metal flashing, for a period of 5 years.
1.7 PERFORMANCE REQUIREMENTSA. General: Install a watertight, modified bituminous membrane roofing and base
flashing system with compatible components that will not permit the passage of
liquid water and will withstand wind loads, thermally induced movement, and
exposure to weather without failure.
B. FM Listing: Provide modified bituminous membrane, base flashings, and
component materials that meet requirements of FM-4450 and FM-4470 as part of a
roofing system and that are listed in FM's "Approval Guide" for Class-1 or
noncombustible construction, as applicable. Identify materials with FM markings.
1. Roofing system shall comply with the following:
a. Fire/Windstorm Classification: Class-1A-60
C. Roofing System Design: Provide a roofing system that complies with roofing
system manufacturer's written design instructions and with the following:
1.8 SYSTEM MOCK-UP
Prior to the submittal of any roofing materials, shop drawings, or any on-site work,
the Contractor shall remove a section of existing metal coping (location to be
determined by the Architect) and construct a full size sample of the roof membrane
termination and coping detail. The mock-up is required to demonstrate the
Contractors ability to execute the construction in a manner that achieves the design
intent.
1.9 SPECIAL CONSIDERATIONS
A. The existing roof construction involves termination of the roof membrane under
existing metal coping units that are custom fabricated to connect with the existing exterior wall
panels as a cohesive system. The contractor shall exercise care and protect the shape and finish
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on these existing coping units as they are removed to facilitate removal of the existing roofing
and installation of the new roofing. Each coping section shall be marked (on the underside) for
identification, and replaced in the same location. Photographs of the predominant coping unit
and provided as the end of the specification section for information purposes.
PART 2 PRODUCTS
2.1 GENERAL
A. Systems shall be provided as specified in approved manufacturer's latest published
manual conforming to detailed requirements of this contract.
B. Materials shall be products from manufacturer or recommended by them, selected
for compatibility and to perform as an integrated construction system.
C. The roofing system shall consist of, but is not limited to, insulation, overlaymentboard, asphalt built up roofing, modified bitumen cap sheet, and modified bitumen
base flashing for the entire project.
2.2 BUILT UP ASPHALT ROOFING AND MODIFIED BITUMEN ROOFING:
A. Manufacturer:
1. Subject to compliance with requirements of the contract, provide products of
one of the following:
a. Tremco
b. GAF
c. Firestone Building Productsd. Flex
e. Johns Manfield
2. Specifications for products and applications have been written using Firestone
Building Products terminology. Equivalent products and installation
processes will be acceptable subject to submittal and approval. The
Contractor is responsible for providing all comparison data for substitute
products.
B. Plys and Membranes:
1. Built Up Roofing Plies: Inorganic fiberglass reinforced ply sheets, "FirestoneSBS Premium Base" meeting ASTM D6163 Type II, Grade S.
2. SBS Cap Sheet: Provide Firestone SBS Modified Bitumen cap sheet
fabricated from styrene-butadiene-styrene rubber modified asphalt reinforced
with a non-woven polyester mat and surfaced with factory applied ceramic
granules manufactured to 160 mil thickness meeting ASTM-D-6164 Type II
Grade G. Finish color shall be ultrawhite.
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C. Auxiliary Membrane Materials
1. General: Furnish auxiliary materials recommended by roofing system
manufacturer for intended use and compatible with SBS-modified bituminous
roofing.a. Furnish liquid-type auxiliary materials that meet VOC limits of
authorities having jurisdiction.
2. Asphalt Primer: ASTM-D-41.
3. Modified Bitumen Cold Adhesive: ASTM D 4479-93 Type I, consisting of an
asphalt matrix blended with fibers and selective adhesive additives.
4. SBS Modified Asphalt Roofing Cement: ASTM-D-4586, SBS modified
asbestos free, of consistency required by roofing system manufacturer for
application.
5. Mastic Sealant: Poly-isobutylene, plain or modified bituminous, non-
hardening, non-migrating, non-skinning, and non-drying.
6. Roofing Granules: Ceramic-coated roofing granules, No.-11 screen size with100 percent passing No.-8 (2.36-mm) sieve and 98 percent of mass retained
on No.-40 (0.425-mm) sieve.
a. Color: UltraWhite.
7. Glass-Fiber Fabric: Woven glass cloth, treated with asphalt; complying with
ASTM-D-1668, Type-I.
8. Liquid Flashing
a. Firestone Ultra Flash Liquid Flashing including primers and reinforcing
mats to make a complete liquid flashing seal as per manufactures
instructions. Apply roofing granules to liquid flashing to maintain the
ultrawhite coating over the entire roofing system.
2.3 ROOF INSULATION
A. General:
Thicknesses shown are for thermal conductivity (k-value at 75 degrees F) specified
for each material. Provide adjusted thicknesses as directed for equivalent use of
material having different thermal conductivity; provide appropriate thickness of
material when thermal resistance ("R" values) are shown.
B. Polyisocyanurate Rigid Board Insulation:
1. Provide Firestone ISO 95+ roofing insulation, ASTM C1289, including facers
of glass fiber mat on both major surfaces, or approved equal as follows:a. Federal Specifications: HH-I-1972/Gen. and HH-I-1972/2 Class 1
b. Insulation Core: Polyisocyanurate
c. Facer: Perforated Glass Fiber Mat
d. Dimensional Stability: Less than 2%
e. Service Temp. -100 to +250 degrees F
f. Density: 2 PCF
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g. Flame Spread: 25 max
h. Compressive Strength 20 psi min
i. Aged Insulation Value R 6.25 @ 1" thickness
2. Provide tapered crickets sloped 1/2" per foot with a minimum thickness of
1/2".
C. Overlay Board:
Where indicated as "Overlay" on the drawings, Firestone ISO Guard HD, 1/2"
thick, or approved equal.
D. Cant Strips and Edge Strips:
Provide tapered cant strips and edge strips of asphalt impregnated wood fiberboard
preformed to 45 degree angle, approved by roofing manufacturer for use with
roofing system.
E. Gypsum Sheathing Board: Where indicated as "Gypsum Sheathing Board" on thedrawings, provide glass fiber faced gypsum sheathing, non-structural, glass mat
faced, silicone treated gypsum core, Georgia Pacific Building Products "DensDeck"
boards, 1/2" thick, or approved equal.
2.4 FASTENERS
A. Metal Decking Insulation Anchors:
Firestone All Purpose fasteners and fastener plates or approved equal, length as
required to meet manufacturer's minimum requirements.
B. Membrane Terminations at Blocking:Fasteners for attachment of asphalt plys or modified bitumen sheets at termination
points on wood blocking shall be 11 gauge, hot dip galvanized, large head, annular
threaded roofing nails, 1-1/2" long.
2.5 ACCESSORIES
A. Termination Bars: Firestone termination bar of 0.100" thick 3003-H14, 3105-H14
or 6063-T5 aluminum
B. Walkway Pads: Provide an additional layer of SBS cap sheet under existing pre-
cast concrete pavers.
C. Sealants:
1. Lap Edge Sealant: Firestone general purpose sealant; silicone rubber, one
part, high solids, gray color.
2. Pourable Sealer: Firestone two part polyurethane pourable sealer for sealing
penetration pockets.
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PART 3 EXECUTION
3.1 DEMOLITION
A. General:
1. Remove existing insulation complete, to the deck below. Do not damage the
roof decking. Remove existing metal coping and flashing complete except
where indicated on the drawings to remain.
2. Clean building, structures and improvements of dust, dirt, and debris caused
by demolition operations, as directed by the Architect or governing
authorities. Return adjacent areas to condition existing prior to start of work.
3. Proceed with demolition in systematic manner. Do not remove more roofing
than can be replaced before the end of daily operations.
4. Make the roof system weatherproof and waterproof at the end of each day's
operations.5. Removed materials shall not be thrown freely from the roof but shall be
lowered to the ground by mechanical devices or in an enclosed chute.
Contractor shall minimize the spread of dust and debris.
B. Demolition Plan:
The Contractor shall submit a detailed roofing demolition plan that describes the
equipment and methods to be used, refuse storage and removal processes, and the
proposed disposal methods. The plan shall also include methods for protecting the
building interior and exterior, traffic control, occupant protection, and security of
the construction site.
C. Demolition Equipment and Methods:
1. Scrape off existing roofing, do not use axes or impact tools.
2. Roof cutting power tools shall be equipped with operable blade depth setting
mechanisms which shall control the cutting depth of the blade. The
Contractor shall take every precaution to avoid cutting the decking. The
Contractor shall repair all decking that is damaged by the demolition
operation at the Contractor's expense.
3. Conveyances: Contractor shall transport demolition debris across the roof in
vehicles that will not damage or overload the roof deck.
4. The Contractor shall provide chutes for debris to be transferred to containers
at grade. Protect the wall behind and adjacent to chute locations withtarpaulins.
5. The use of "bobcat" type removal equipment is prohibited.
D. Disposal of Demolished Materials:
1. Remove from site all debris, rubbish, and other materials resulting from
demolition operations.
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2. Transport materials removed from demolished structures and dispose of off-
site in accordance with regulations and authorities having jurisdiction.
3. The Owner shall designate all crane and refuse container locations. The
Contractor shall repair any lawns or paving damaged during the Contract to
original, or better, condition.
3.2 PULL OUT TESTS
A. Conduct (6) pull-out tests for every 10,000 square feet of roofing, but not less than
(6) tests on each building.
B. Pull-out minimum test values shall be 60 pounds.
3.3 PREPARATION OF SUBSTRATE
A. Comply with manufacturer's instructions for preparation of substrate to receive
system, except where more stringent requirements are indicated.
B. Clean substrate of dust, debris, and other substances detrimental to new work.
Remove sharp projections.
C. Install cant strips, edge strips, flashings, and accessory items as shown, and as
recommended by the manufacturer even though not specifically shown.
D. Verify that work requiring penetration of the deck, or that requires men and
equipment to travel over the roof deck has been completed.
E. Confirm that all surfaces are adequately anchored, even and free of any foreign
material, moisture, or un-evenness.
F. Immediately notify the Architect of any defects. Do not apply the roofing system
until these defects have been corrected.
G. Verify that curbs and nailers are in place and properly installed.
3.4 ASPHALT PRIMER
Apply primer to all wood surfaces and sheet metal surfaces in contact with bituminous
materials, including sheet metal flanges (both sides), prior to flashing installation. Applyprimer by brush at a rate of 100 square feet per gallon with no bare spots. Allow primer
to dry thoroughly before installing the bituminous flashings.
3.5 INSULATION INSTALLATION
A. General:
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1. Extend insulation the full thickness over entire surface to be insulated, cutting
and fitting tightly around obstructions. Do not install more insulation each
day than can be covered with membrane before end of each day and before
start of inclement weather.
2. Do not use any damaged or wet insulation boards.3. Install insulation boards with not more than 1/4" gap between boards.
4. Poorly adhered boards and boards with more than 1/4" gap shall be removed
and replaced.
B. Metal Decking:
Install insulation using anchors and plates specified. Use anchor pattern
recommended by roofing system manufacturer. Install overlayment board in
adhesive.
3.6 ASPHALT BUILT UP ROOF INSTALLATION
A. General:
1. Comply with manufacturer's published instructions, except where more
stringent requirements are indicated.
2. Do not cut or dilute any material with a solvent or dilutant.
3. Specifications are based upon Firestone 3-ply asphalt built-up roofing with
SBS Modified Bitumen Cap sheet, Firestone specification I-3F33-M, for
minimum compliance.
4. Prevent compounds from entering and clogging drains and conductors, and
from spilling or migrating onto surfaces of other work.
5. Extend modified bituminous membrane over and terminate beyond cantsa. Unroll sheet and allow it to relax for the minimum time period required by
manufacturer.
B. Laying Felts:
1. 2-ply installation:
a. Install 2 plies of modified bituminous membrane, consisting of a base
ply and an inner ply, starting at low point of roofing system.
i. Base and Inner Ply application: adhere each ply to substrate in a
squeegee application of cold adhesive applied at a rate required by
roofing system manufacturer.ii. Starting from the low point of the roof, apply a 12" width of ply
felt starter strip, followed by a 24" width directly over the first felt.
Apply remaining felts in full 36" widths in a shingle fashion with
a minimum 24-1/2" overlap, so that at least three plies of felts
cover the entire roof surface.
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2. Lay felts perpendicular to slopes less than 3 inches per foot and parallel on
greater slopes.
3. Broom all felts into hot bitumen and insure that no air is trapped between
plies.
4. Extend roofing sheets up face of cant and cut off evenly minimum 4 " abovecant in accordance with details on drawings.
5. On inclines one inch per foot or more, backnail all plies.
6. No bare spots, dry laps or wrinkles will be accepted. Cut and reset all
fishmouths, and patch with an additional ply of roofing felt. Extend each ply
a minimum of 9 inches in each direction beyond the defective area.
7. Do not use any rolls of felt plys which are oval shaped, which have frayed
ends, or which exhibit similar defects that will effect the smooth rolling of
plys onto the roof surface. Remove defective rolls of material from the
jobsite.
D. Modified Bitumen Cap Sheet:1. Contractor shall obtain the Owner's written approval of the 2-ply asphalt built-
up roofing installation before proceeding with the Cap Sheet installation.
2. Verify that all repairs have been made to defects in the built-up membrane and
surfaces are free of sawdust, dirt, insulation debris and other contaminants
prior to starting application.
3. Cap sheets shall be installed by rolling sheets perpendicular to the slope of the
roof.
4. Starting at the low point of the roof, unroll the first roll of SBS Cap Sheet and
allow to relax.
5. Adhere each ply to substrate in a squeegee application of cold adhesive
applied at a rate required by roofing system manufacturer6. Membrane sheets shall be applied free of wrinkles, creases, fishmouths, or
voids. Maintain alignment of sheets utilizing marked lap lines. Should the
lap lines become mis-aligned during installation, cut the sheet and establish a
new end lap. Do not attempt to realign a partially adhered membrane roll.
7. Inspect cap sheet application for defects. Cut wrinkles, creases, and
fishmouths to relax the membrane. Apply a full width strip of cap sheet
membrane over the defect in a full bed of cold adhesive and lapped a
minimum of 12" beyond the cut. Unbonded lap seams of more than 1/2"
wide shall be embedded in cold adhesive troweled under the unbonded
membrane.
3.7 BASE FLASHING INSTALLATION; MODIFIED BITUMEN
A. Base Flashing Interply Sheet:
1. Install modified bituminous membrane base flashing over cant strips and other
sloping and vertical surfaces, at roof edges, and at penetrations through roof,
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and secure to substrates according to roofing system manufacturer's written
instructions and as follows:
a. Prime substrates with asphalt primer if required by roofing system
manufacturer.
b. Base sheet flashing application: Install base-sheet backer and adhere tosubstrate by torch application.
c. Mineral surfaced flashing Application: Adhere modified bituminous
membrane base flashing to substrate by cold applied application.
2. Extend base flashing up the wall a minimum of 8 inches (200 mm) above roof
membrane and 4 inches (100 mm) onto field of roof membrane.
3. Mechanically fasten top of modified bituminous membrane base flashing
securely at terminations and perimeter of roofing.
a. Seal top termination of base flashing
4. Install modified bituminous stripping where metal flanges and edgings are set
on membrane roofing, according to roofing system manufacturer's written
instructions.
3.8 FLASHINGS AND PENETRATIONS
A. General:
1. Remove all existing flashing except as otherwise indicated on the drawings.
2. Flash all penetrations passing through the cap sheet.
3. The flashing seal shall be made directly to the penetration except as shown in
details with lead sleeves.
B. Roof drains:
1. Remove all existing flashings including lead flashing sheets, roofing materials
and cement from the existing drain.
2. Provide a clean even finish on the mating surfaces between the clamping ringand the drain bowl.
3. Install pre-manufactured tapered insulation around the drain to provide a
smooth transition from the roof surface to the drain. slope shall not exceed 1"
per 12".
4. Install the base sheet, stopping just short of the bowl. Install ply sheets
extending to the inside of the bowl directly beneath the clamping ring.
5. Apply roof mastic to clamping area of the drain bowl and top of the ply
sheets.
6. Install the lead flashing and prime the top surface with asphalt primer.
7. Install a target patch of Modified Bitumen Reinforced flashing over the lead
flashing, down to the inside of the drain bowl.8. Make round holes in the cap sheet and align with clamping bolts.
9. Install the roof drain clamping ring and clamping bolts. Tighten the clamping
bolts to achieve continuous compression.
3.9 TEMPORARY ROOF PROTECTION:
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A. Should precipitation threaten during the work day, protect unfinished, exposed
roofing and flashing components in accordance with manufacturers instructions.
All roofing not receiving 2- plies, shingle pattern, on the same day shall be
considered temporary roofing.
B. Provide temporary cut-offs around exposed edges and incomplete flashing
locations. Remove all cut-offs completely prior to continuing with subsequent
work.
C. Temporary cut-offs shall be constructed of 2-plys of fiberglass roofing felt set in
modified bitumen flashing adhesive on the roof system, and extended onto the
adjacent roofing a minimum of 18". Set the felts onto the existing roof in a full bed
of asphaltic flashing cement and weigh down with wood planks and 20 pounds per
linear foot ballast. Remove all temporary cut offs prior to recommencing roofing
work.
D. New 2-ply membrane shall be installed over all temporary roofing the following
day. The glaze coated roof area shall not be considered part of the finished roof
system.
E. Assume responsibility for sealing exposed roof deck against weather during
installation and for damages due to leakage thereof.
END OF SECTION
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FLASHING AND SHEET METAL 07600 - 1
SECTION 07600 FLASHING AND SHEET METAL
PART 1 GENERAL
1.1 DESCRIPTION OF WORK
A. The extent of each type of flashing and sheet metal work is indicated on the drawingsand by provisions of this section.
B. The types of work specified in this section include the following:
1. Metal counter flashing; and base flashing2. Metal wall flashing and expansion joints
3. Prefabricated Coping
4. Miscellaneous sheet metal accessories
1.2 SUBMITTALS
A. Product Data
Submit manufacturers product specifications, installation instructions and general
recommendations for each specified sheet material and fabricated product.
B. Shop DrawingsSubmit shop drawings showing layout, joining, profiles, and anchorages of fabricated
work, including major counter flashings, trim/facia units, gutters, downspouts,
scuppers and expansion joint systems; layouts at scale, details at 3 scale.
C. SamplesSubmit two, 8 square samples of specified sheet materials to be exposed as finished
surfaces.
D. Job Conditions
Coordinate work of this section with interfacing and adjoining work for propersequencing of each installation. Ensure best possible weather resistance and durability
of the work and protect of materials and finishes.
PART 2 PRODUCTS
2.1 FLASHING AND SHEET METAL MATERIALS
A. Aluminum:
ASTM B 209, alloy 3003, temper H14, Kynar 500 finish; 0.40 except as otherwise
indicated.
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FLASHING AND SHEET METAL 07600 - 2
B. Zinc Coated Steel:Commercial quality with 0.20% copper, ASTM A 525 except ASTM A 527 for lock
forming, G90 hot dip galvanized, mill phosphatized where indicated for painting;
0.0359 thick (20 gage) except as otherwise indicated.
C. Elastic Sheet Membrane:
Manufacturers standard flexible, elastic, black, non-reinforced, flashing sheet of 50 to65 mils thickness; 50-70 Shore A hardness (ASTM D2240); 1200 psi tensile strength
(ASTM D412); 120 pounds per linear inch tear resistance (ASTM D624, Die C);
ultimate elongation of 250% (ASTM D412): brittleness temperature of -30 degrees F
(ASTM D746): resistance to ozone aging of no cracks for 10% elongated sample for100 hours in 50 ppm ozone at 104 degrees F (ASTM D573); resistance to heat aging
of maximum hardness increase of 15 points, elongation reduction of 40%, and tensile
strength reduction of 30%, for 70 hours at 212 degrees F (ASTM D 573).1. provide butyl synthetic rubber sheet.
2.2 FORMED UNITS
A. General Metal Fabrication:
Shop fabricate work to the greatest extent possible. Comply with details shown, andwith applicable requirements of SMACNA Architectural Sheet Metal Manual and
other recognized industry practices. Fabricate for waterproof and weather resistantperformance; with expansion provisions for running work, sufficient to permanently
prevent leakage, damage or deterioration of the work. Form work to fit substrates.
Comply with material manufacturer instructions and recommendations. Form
exposed sheet metal work without excessive oil-canning, buckling and tool marks, true
to line and levels as indicated, with exposed edges folded back to form hems.
B. Seams:Fabricate non-moving seams in sheet metal with flat-lock seams. For metal other than
aluminum, tin edges to be seamed, form seams, and solder.
C. Expansion Provision:
Where lapped or bayonet type expansion provisions in work cannot be used, or would
not be sufficiently water/weatherproof, form expansion joints of intermeshing hookedflanges, not less than 1 deep, filled with mastic sealant (concealed within joints).
D. Sealant JointsWhere movable, non-expansion type joints are indicated or required for properperformance of work, form metal to provide for proper installation of elastomeric
sealant, in compliance with industry standards.
E. Separation
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Provide for separation of metal from non-compatible metal or corrosive substrates byapplying an elastic sheet membrane to the concealed surfaces at locations of contact,
or other permanent separation as recommended by manufacturer/fabricator.
F. Aluminum Extrusion Units:
1. Fabricate extruded aluminum running units with formed or extruded aluminumjoint covers, for installation behind main members.
2. Fabricate mitered and welded corner units.
2.3 FABRICATED METAL ROOFING ACCESSORIES
A. Aluminum Coping (Cap piece over existing coping)
1. Custom fabricated profiles or as indicated on the drawings, Kynar 500 finish,0.040 minimum thickness for primary legs of extrusions.
2. Provide manufactured, shop-prefabricated, system including pre-formed coping
including special radius corner units, special mitered corner units, 6 spliceplates, and 24- gauge hold cleats with integral neoprene compression pads.
Splice plates shall be treated with factory applied sealant beads.
2.4 MISCELLANEOUS MATERIALS AND ACCESSORIES
A. Fasteners
Stainless steel metal or, other non-corrosive metal as recommended by sheetmanufacturer. Match finish of exposed heads with material being fastened.
B. Metal Accessories
Provide sheet metal clips, straps, anchoring devices and similar accessory units as
required for installation of work, matching or compatible with material being installed,
non-corrosive, size and gage required for performance.
PART 3 EXECUTION
3.1 INSTALLATION REQUIREMENTS
A. GeneralExcept as otherwise indicated, comply with manufacturers installation instructions
and recommendations, and with SMACNA Architectural Sheet Metal Manual.
Anchor units of work securely in place by methods indicated, providing for thermalexpansion of metal units; conceal fasteners where possible, and set units true to line
and level as indicated. Install work with laps, joints and seams which will be
permanently watertight and weatherproof.
B. Underlayment
Where stainless steel or aluminum is to be installed directly on cementitious or wood
substrates, install an elastic sheet membrane on the substrate.C. Installation:
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1. Bed flanges of work in thick coat of bituminous roofing cement where requiredfor waterproof performance.
2. Flashing
a. Install counter flashing in accordance with approved shop drawings and
manufacturers product data to comply with specified performancerequirements. Counter flashing components shall be true to line, without
buckling, creasing, warp or bin in finished surfaces.b. Coordinate counter flashing at roof surfaces with roofing work to provide
weather tight condition at roof terminations.
c. Isolate dissimilar materials to prevent electrolysis.
d. Secure counter flashing using continuous cleats, clips and fasteners inaccordance with product data and as indicated.
3. Install elastic flashing without stretching. Install elastic flashing filler strips to
provide for movement by forming loops of bellows in width of flashing. Locatefiller strips to facilitate complete drainage of water from flashing. Seam flashing
sheets with adhesive, and anchor edges in manner indicated.4. Nail flanges of expansion joint units to curb nailers, at maximum spacing of 6".
Complete seams at joints between units, to form a continuous waterproof
system.
3.2 CLEANING AND PROTECTION
A. Clean exposed metal surfaces, removing substances which might cause corrosion of
metal or deterioration of finishes.
B. Contractor shall protect sheet metal and flashing work during construction to ensure
that work will not be damaged.
END OF SECTION
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EXISTING REMOVED COPING OF HIGH ROOF
EXISTING GALVANIZED STEEL ANGLE
FRAMING UNDER EXISTING EPDM ROOFING
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EXISTING HIGH ROOF COPING SPLICE PLATE
EXISTING HIGH ROOF COPING SPLICE PLATE
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EXISTING HIGH ROOF COPING
EXISTING HIGH ROOF COPING
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JOINT SEALERS 07900 - 1
SECTION 07900
JOINT SEALERS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and
Supplementary Conditions and Division 1 Specifications Sections, apply to this
Section.
1.2 DESCRIPTION OF WORK
A. The applications for joint sealers as work of this section include the following:
1. Flashing and coping joints
2. Exterior wall panel joints
1.3 GENERAL PERFORMANCE REQUIREMENTS
A. Except as otherwise indicated, joint sealers are required to establish and maintain
airtight and waterproof continuous seals on a permanent basis, within recognized
limitations of wear and aging as indicated for each application. Failures of installed
sealers to comply with this requirement will be recognized as failures of materials
and workmanship.
1.4 REFERENCES
A. ASTM D 1056 - Flexible Cellular Materials - Sponge or Expanded Rubber.
B. ASTM D 1565 - Flexible Cellular Materials - Vinyl Chloride Polymers and
Copolymers (Open-Cell Foam).
C. FS TT-S-001543 - Sealing Compound, Silicone Rubber Base.
D. SWI (Sealing and Waterproofers Institute) - Sealant and Caulking GuideSpecification.
1.5 SUBMITTALS
A. Product Data: Manufacturer's printed data indicating sealant chemical
characteristics, performance criteria, limitations, and color availability for each
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elastomeric product required.
B. Warranty: Include installed sealants and accessories against failure to achieve air
tight and watertight seal, exhibit loss of adhesion or cohesion, or not cure
1.6 JOB CONDITIONS
A. Weather Conditions:
Do not proceed with installation of liquid sealants under unfavorable weather
conditions. Install elastomeric sealants when temperature is in lower third of
temperature range recommended by the manufacturer for installation.
1.7 QUALITY ASSURANCE
A. Manufacturer: Company specializing in manufacturing products specified in this
Section with a minimum of 20 continuous years of documented experience.
B. Installer: Company specializing in installation of work in this Section with aminimum 5 continuous years of documented experience and approved by sealantmanufacturer.
C. Comply with Sealant and Waterproofers Institute requirements for materials andinstallation.
1.8 ENVIRONMENTAL REQUIREMENTS
A. Do not install solvent curing sealants in enclosed buildings spaces without
sufficient ventilation to maintain LTL solvent vapor levels.
B. Maintain temperature and humidity recommended by the sealant manufacturer
during and after installation.
1.9 WARRANTY
A. Provide 5-year warranty.
PART 2 - PRODUCTS
2.1 ACCEPTABLE MANUFACTURERS
A. General:
Manufacturers listed in this article include those known to produce the indicated
category of prime joint sealer material, either as a nominally pure generic product
or as an equivalent performance modification thereof or proprietary product.
B. Manufacturer:
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Subject to compliance with requirements, provide products of one of the following:
1. Euclid Chemical
2. W.R. Meadows
3. Pecora Corp.
4. Sonneborn/Contech5. Tremco, Inc.
2.2 SEALER MATERIALS
A. General Sealer Requirements:
Provide colors indicated or, if not otherwise indicated, as selected by the Architect
from the manufacturer's standard colors. Select materials for compatibility with
joint surfaces and other indicated exposures, and except as otherwise indicated
select modulus of elasticity and hardness or grade recommended by the
manufacturer for each application indicated. Where exposed to foot traffic, select
non-tracking materials of sufficient strength and hardness to withstand stiletto heeltraffic without damage or deterioration of sealer system.
B. Single Component Silicon Rubber Sealant:
Except as otherwise indicated, provide manufacturer's standard, ultra low modulus,
high performance, one part, silicone rubber based, air curing, non-sag, elastomeric
sealant; complying with ASTM C920 Type S Class 25 Grade NS, FS TT-S-
001543A Class A Type Non-sag. Provide Tremco "Spectrem I" or approved equal.
2.3 CELLULAR/FOAM JOINT FILLERS AND SEALANT BACKERS
A. Closed Cell Synthetic Rubber Joint Filler:Provide expanded synthetic rubber complying with ASTM D1056, class SC-E of 2
to 5 psi compression deflection; except provide 13 to 17 psi compression deflection
where filler is applied under sealant exposed to traffic.
2.4 MASKING TAPE
For masking around joints, provide masking tape complying with Fed Spec UU-T-106C.
PART 3 - EXECUTION
3.1 SURFACE CONDITIONS
Examine areas and conditions under which work of this Section will be performed.Correct conditions detrimental to timely and proper completion of Work. Do not proceed
until unsatisfactory conditions are corrected.
3.2 JOINT PREPARATION
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A. Clean joint surfaces immediately before installation of gaskets, sealants or caulking
compounds. Remove dirt, insecure coatings, moisture and other substrates which
could interfere with seal of the gasket or bond of sealant or caulking compound.
Etch concrete and masonry joint surfaces as recommended by sealant manufacturer.
Roughen vitreous and glazed joint surfaces as recommended by the sealantmanufacturer.
B. Prime or seal joint surfaces where indicated, and where recommended by the
sealant manufacturer. Confine primer/sealer to areas of sealant bond; do not allow
spillage or migration onto adjoining surfaces.
C. Steel surface:
1. Steel surfaces in contact with sealant:
a. Clean metal surface with power tools as required to archive acceptable
surface or bond.
b. Use solvent to remove oil and grease, wiping surfaces with clean rags.2. Remove protective coatings on steel with power tools or by using solvent that
leaves no residue.
D. Aluminum surfaces:
1. Aluminum surfaces in contact with sealant:
a. Remove temporary protective coatings, dirt, oil, and grease.
b. When masking tape is used for protective cover, install tape just prior to
applying sealant.
2. Use only nonstaining solvents to remove protective cover, as recommended
for that purpose by manufacturer of aluminum work.
3.3 INSTALLATION
A. Comply with manufacturer's printed instructions except where more stringent
requirements are shown or specified, and except where manufacturer's technical
representative directs otherwise.
B. Set joint filler units at depth or position in joint as indicated to coordinate with
other work, including installation of bond breakers, backer rods and sealants. Do
not leave voids or gaps between ends of joint filler units.
C. Install sealant backer rod for liquid applied sealants, except where shown to beomitted or recommended to be omitted by the sealant manufacturer for application
indicated.
1. Use only backup material recommended by sealant manufacturer and
approved by Architect for particular installation, compressing backup material
25% to 50% to achieve positive and secure fit
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2. When using backup of tube or rod stock, avoid lengthwise stretching of
material. Do not twist or braid hose or rod backup stock.
D. Install bond breaker tape where indicated and where required by the manufacturer's
recommendations to ensure that liquid applied sealants will perform as intended.
E. Thoroughly and completely mask joints where appearance of sealant on adjacent
surfaces would be objectionable.
F. Employ only proven installation techniques, which will ensure that sealants are
deposited in uniform, continuous ribbons without gaps or air pockets, with
complete wetting of joint bond surfaces equally on opposite sides. Except as
otherwise indicated, fill sealant rabbet to a slightly concave surface, slightly below
adjoining surfaces. Where horizontal joints are between a horizontal surface and
vertical surface, fill joint to form a slight cove, so that joint will not trap moisture
and dirt.
G. Install liquid applied sealant to depths as shown or, if not shown, as recommended
by the sealant manufacturer but within the following general limitations, measured
at the center section of beads.
H. Equipment:
1. Apply sealant under pressure with power-actuated or hand gun or other
appropriate means.
2. Use guns with nozzle of proper size, providing sufficient pressure to
completely fill joints as designed.
I. For normal moving joints sealed with elastomeric sealants but not subject to traffic,
fill joints to a depth equal to 50% of joint width, but neither more than 1/2" deep
nor less than 1/4" deep.
J. Do not allow sealants or compounds to overflow from confines of joints, or to spill
onto adjoining work, or to migrate into voids of exposed finishes. Clean adjoining
surfaces by whatever means may be necessary to eliminate evidence of spillage.
3.4 SCHEDULE OF SEALANT APPLICATION
A. Exterior Joints of metal siding, exposed metal trim, metal roofing panels, andcopings: Single Component Silicon Rubber.
3.5 CLEANING UP
A. Remove masking tape immediately after joints have been tooled.
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Columbus Center Roof Replacement Project No: 12-119
July 24, 2013
B. Clean Adjacent surfaces free from sealant as installation progresses, using solvent
or cleaning agent sealant manufacturer recommends.
3.6 CURE AND PROTECTION
A. Cure sealants and caulking compounds in compliance with manufacturer's
instructions and recommendations, to obtain high early bond strength, internal
cohesive strength and surface durability. Replace or restore sealants which are
damaged or deteriorated during construction period.
END OF SECTION