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Projects - How to Insulate Attic Rafters with Foam it Green

Use Closed Cell Foam it Green for Attic Rafters

Attic Insulation is an extremely common project. It's quick and easy to do. Plus the benefits range from much lower utility bills to reduced sound transfer.

By using closed cell Foam it Green, you create a seamless air barrier and high r-value that will keep your home much warmer than before in the winter and much cooler in the summer.

The rigid foam creates a pest barrier that helps keep insects and rodents out. And because it never sags or settles, once it's in place, it's done, unlike fiberglass. Plus, you're much less likely to have mold issues with the anti-microbial formula.



How to Quickly and Easily Insulate Attic Rafters:

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1) Follow all of the instructions in the included
instruction manual regarding proper Foam it Green
setup, project area preparation, and substrate readiness.
Make sure that you have all of the tools required for the
job (see Tools).

2) Remove attic floor boards only if/as needed to locate
and air seal the furring cavity at the exterior wall (the
gap between the exterior wall plaster and the brick
bearing wall).

3) Install rigid insulation transition piece from top of
wall to underside of roof sheathing. (Fig. 1)

4) Apply closed cell foam to all seams of rigid boards
used as transition piece including at connections to attic
deck, roof deck, and adjacent rigid insulation pieces.
(Fig. 2)

5) Install rigid insulation to cover ridge vent, applying
closed cell foam to seal in place.

6) Apply closed cell foam to roof deck in 1” cured
layers to desired thickness. (Fig. 3)

*Please note, roof vent baffles can be used behind rigid insulation pieces as well as under spray foam, run along the
underside of the roof decking to the ridge vent, to allow for air movement from soffits to ridge. This creates an air
gap under the roof decking. Spray foam can be applied directly to the roof vent baffles to desired thickness.

Download this page as a printable PDF >

Call 1-800-516-0949 for help in purchasing your kits.


Additional Closed Cell Kit Details:

The Easy to Use Spray Foam Kit

  • Spray foam insulation that's convenient and easy to use.
  • R-Value of 7 in 1 inch - 97% Closed Cell Foam. The best wall, basement or attic insulation.
  • Class I E-84 Fire-Retardant - meets building code spec.
  • 100% Free of CFCs, VOCs, Penta-BDEs, & Urea Formaldehyde


Spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r-value in just 1 inch. Choose Foam It Green spray foam insulation kits and don't settle for less than you deserve.

If you'd like to start saving money and time today, buy Spray Foam Insulation now or call us at 800-516-0949. In 60 seconds you'll be on your way to paying lots less when you use Spray Foam Insulation. Click here now.

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