Spray Foam Attic Thickness

A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.

Spray foam attic thickness.

Unfortunately good average thickness doesn t cut it. If you d like to start saving money and time today buy foam it green spray foam insulation now or call us at 800 516 0949. In a properly insulated spray foam attic the temperature won t be much higher than the house temperature. Medium density closed cell spray foam ccspf.

Allowable of the spray foam in an attic is 6 inches. Then you can use other forms of insulation like fiberglass or cellulose to add r value now that you have a tight air seal. Spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r value in just 1 inch. The problem was that the installer was doing his first spray foam job ever and the thickness of the insulation varied from zero visible roof deck to about 9.

Light density open cell spray foam is commonly known as half pound. The best part of using foam it green spray foam on an attic floor is you only need 1 inch cured thickness to seal the living spaces you use from the attic. This form of insulation is commonly known as two pound foam as it is a rigid insulating material that requires a thickness of 50 mm when applied in the home typically this foam s natural color is yellow when applied in insulation. Light density open cell spray foam ocspf.

This is fine for areas where r 21 or less is required but if the area requires a higher r value than 21 the testing approvals won t allow it maximum thickness limitations for cured foam maximum thickness limitations for cured spray polyurethane.