Closed Cell Spray Foam For Attic
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Closed cell spray foam for attic. Class i e 84 fire retardant meets building code spec. Use closed cell foam it green for attic rafters. This medium density spray foam is a closed cell spray foam that is typically used where there is the need for r value insulation per inch possible. The myth that open cell is more economical is bullshit.
Spray foam insulation that s convenient and easy to use. Open cell foam weighs 1 2 pound per cubic foot and closed cell weighs 2 lbs per cubic foot. This type of spray polyurethane foam can be classified into two different types. Light density open cell spray foam insulation and medium density closed cell spray foam insulation.
Closed cell foam can also increase the racking strength of attic walls which is the ability of a structure such as a wall to withstand horizontal forces. R value of 7 in 1 inch 97 closed cell foam. There is 300 difference there but the cost they give you is about a third difference and open cell foam at 12 inches will not give you the performance of 2 inches of closed. This type of spray foam offers the specific benefits of continuous insulation interior wall cavity fill and unvented attic applications.
The best attic insulation. It also stops air flow through and.