This type of spray polyurethane foam can be classified into two different types.
Closed cell spray foam for attic.
Get your kits the easy to use spray foam kit.
Open cell foam weighs 1 2 pound per cubic foot and closed cell weighs 2 lbs per cubic foot.
The spray foam insulation or spray polyurethane foam spf is a popular alternative to traditional building insulation such as fiberglass.
Use closed cell foam it green for attic rafters.
It also stops air flow through and.
This type of spray foam offers the specific benefits of continuous insulation interior wall cavity fill and unvented attic applications.
R value of 7 in 1 inch 97 closed cell foam.
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.
Closed cell spray foam has a perm rating of approximately 1 5 to 3 0 per 25 mm 1 in and an r value of approximately 1 05 per 25 mm 6 0 per 1 in this combination allows a controlled moisture vapour flow while separating the inside and outside environments.
Light density open cell spray foam insulation and medium density closed cell spray foam insulation.
Class i e 84 fire retardant meets building code spec.
Spray foam insulation that s convenient and easy to use.
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.
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.