Mobile Home Attic Insulation - TACAAtacaa.org/files/mobilehomeattic_tacaa2019.pdf · Mobile Home...

transcript

Mobile Home Attic Insulation

Bill Eckman – EnergySmart Academy @ SFCC

WOULD’YA Like to take a SURVEY?

1) Who wants to Avoid MH entirely?2) Who is pushed to do MH attics?3) Can we learn it in a Conference?4) How many MHs do you do per month?

So what’s the plan Jack?

1) Ways to limit the issue2) Strategies to do it well

5 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov

Mobile Home Roof Retrofit

The benefits include:• Increases thermal performance• Provides heating and cooling

savings• Reduced “roof rumble”• Fairly easy to do

• Does not affect the air leakage rate as dramatically as a belly retrofit

Re-insulating roof cavities on pre-1976 mobile homes is cost-effective, according to MHEA

MOBILE HOME ROOF RETROFIT

NatGasCity 80/13 80/11 70/8Amarillo 1,060$ 1,160$ 1,440$ El Paso 960$ 1,060$ 1,360$ Brownsville 980$ 1,120$ 1,480$ Houston 860$ 960$ 1,260$ Dallas 1,040$ 1,140$ 1,440$

Mobile Home Attic Savings1000SF, 2ton AC, 80k Furnace

20yr Total Savings

PropaneCity 80/13 80/11 70/8Amarillo 1,560$ 1,640$ 2,000$ El Paso 1,220$ 1,340$ 1,680$ Brownsville 1,000$ 1,160$ 1,520$ Houston 1,000$ 1,120$ 1,420$ Dallas 1,340$ 1,440$ 1,820$

Mobile Home Attic Savings1000SF, 2ton AC, 80k Furnace

20yr Total Savings

1) How much can we add?2) HVAC Efficiency3) Duct Leakage

1) How much does it really cost?2) Adjust Setup Library accordingly

“Top Fill” Method

Photo courtesy of PA WTC

“Top Fill” – Specialized Tools & Materials

• Flexible 8-foot, 2” diameter fill tube

• High-temperature silicone caulk

• Galvanized steel roofing pieces

• Self-tapping galvanized screws

• Fiberglass mesh

• Elastomeric roof coating

Mark out 4 to 5 evenly spaced holes down the roof center line. The first holes should be 6 to 8 feet from the

Insert a flexible 2-inch diameter 8-foot fill tube, fill the cavity with

insulation, and complete a 360-degree circle of coverage.

“Top Fill” - Techniques

Photos courtesy of PA WTC

Bend the roof flap down and overlap the seams with a

pre-cut piece of galvanized metal roofing.

Back-caulk the patch with high-temperature silicone caulk and attach

with hex-head screws, set every 2 inches.

“Top Fill” - Techniques

Cover with two coats of elastomeric roof coatingover fiberglass mesh

“Top Fill” - Finishing

“Ridge” Method

Accessing the ceiling truss cavity through the roof ridge allows the installer to insulate the entire cavity

Photos courtesy of Cal Steiner

Roof Coating

Image Source: http://www.koolseal.com/

Seal edges and seams with an elastomeric roof coating.

+$400 in cooling areas with AC

• Check the integrity of the ceiling and seal all interior leaks.

• Check the general condition of roof surfaces.

• Mark out 4 to 5 evenly spaced holes down the roof center line; the first holes should be 6 to 8 feet from the ends.

• Cut 8 x 8 square holes along three sides and bend back the metal roofing flap (as shown in slide #27).

• Insert an 8-foot fill tube and fill the cavity with insulation completing a 360-degree circle of coverage.

• Bend the roof flap down and overlap the seams with a precut piece of galvanized metal roofing.

• Back caulk the patch with high-temperature silicone caulk and attach with hex-head screws set every 2 inches.

• Cover with two coats of elastomeric roof coating over fiberglass mesh.

• Seal seams and edges with the same elastomeric roof coating.

“Top Fill” Method - ReviewMOBILE HOME ROOF RETROFIT

The “Edge Lift” Method

“Edge Lift” - Specialized Tools & Materials

• Section of 12-foot long, 2” diameter gray PVC pipe

• Scrap 2 x 4 lumber

• Aluminum self-tapping ½” hex-head screws

• 1.5” roofing nails

• Lengths of aluminum mobile home gutter material

• Putty tape

• Silicone caulk

• Elastomeric roof coating

Remove the old gutter from the roof edge and….

…remove staples from the roof edge

“Edge Lift” – Gaining Access #1

Photo courtesy of WV GOEOPhoto courtesy of PA WTC

Photo courtesy of WV GOEO

Loosen the gable edge to lift the roof

Lift the roof edge to expose the roof cavity

Fill Tube Basics #1

Fill tube

Fill Tube Basics #2

Fit the flexible insulation hose into the bell end of the fill tube…..

…..and duct tape the joint

Photos courtesy of WV GOEO

Fill Tube Basics #3

Cut a taper on the end of the tube to get past obstructions

Open the product gate for optimal material feed

Adjust the air pressure to optimal flow

Insulation Machine Settings

Open the roof cavity about 4” and jack up the roof edge

with scrap 2 x 4 lumber

Work the fill tube past the ridge beam…

“Edge Lift” – Techniques #1

…until it makes contact with the opposite wall

Pull back 4-6” and begin filling

Ensure the roof will close to original position

A small work crew can fill and close up at the

same time

Keep hands back from the edge and wear

safety equipment.

Reinstalling the old gutter is acceptable…

…or you can install a new one

“Edge Lift” – Finishing #1

Photo courtesy of WV GOEOPhoto courtesy of PA WTC

“Edge Lift” – Finishing #2

Apply putty tape to the back of the gutter before

fastening

Roof Coating

Image Source: http://www.koolseal.com/

Seal edges and seams with an elastomeric roof coating.

• Check the integrity of the ceiling and seal all interior leaks

• Check the general condition of roof surfaces

• Select a side of the home with at least 15’ of horizontal clearance

• Erect scaffold or ladders

• Remove all screws, the roof gutter, and staples from the roof eave

• Raise and block up the roof 4 inches and insert a fill tube

• Fill - but don’t overfill - with blown insulation in each cavity

• Push the roof cap down over the siding and nail into the top plate

• Close up by applying putty tape to the backside of the original or new gutter and reinstall with new hex-head screws

• Seal roof edges and seams with elastomeric roof coating

The “Edge Lift” Method - ReviewMOBILE HOME ROOF RETROFIT

“Ceiling” Method #1

“Blowing from the inside!”

• Drill 2-inch holes at 16 inches on center with a hole saw bit

• Space holes 3-feet apart

• Keep holes 2-feet from the edge

• Space holes evenly

Fill to resistance, but don’t dense pack!

Seal holes with plastic plugs

“Ceiling” Method - Review

• Cover the client’s belongings

• Check the integrity of the ceiling and seal all interior leaks

• Drill a series of holes evenly across the ceiling

• Fill the cavity

• Seal holes with plastic plugs

“Gable End” Method #1

“Gable End” Method #2

• Set up a scaffold at the end of the home

• Remove siding from the gable end

• Assemble sections of non-conductive 2” gray PVC pipe to equal the length of the home

• Push the pipe assembly into the cavity toward the other end of the home

• Fill the cavity with insulation along the entire length and width of the home

• Reinstall gable end siding

“Gable End” Method #3MOBILE HOME ROOF RETROFIT

»Reduce “Shadowing”»Modern tech for better install»Double-end or mixed methods

»Existing Conditions»Potential Savings»Retrofit Options (6) and Costs

Want to know More?

WxTVhttps://www.youtube.com/user/TheWXTV/videos?disable_polymer=1

Bill EckmanThe Energy$mart Academy @Santa Fe Community Collegewilliam.eckman@sfcc.edu

Mobile Home Attic Insulation - TACAAtacaa.org/files/mobilehomeattic_tacaa2019.pdf · Mobile Home...

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