Spray Foam Insulation Thickness Attic

Spray foam expands after it is applied allowing even the smallest cracks and crevices to be covered and well insulated.

Spray foam insulation thickness attic.

You will receive between 3 to 4 in r value for every inch of spray foam insulation that is placed in your attic. It provides you with more thermal and sound protection using less thickness. Spray foam insulation offers the highest r value in insulation. Earlier this year i got a question about a home that had spray foam insulation in the attic.

Choose foam it green spray foam insulation kits and don t settle for less than you deserve. This is compared to having to stack fiberglass as high as 14 16 inches to get the same results. So if the ideal r value for your home is r 40 your contractor may only need to spray five inches of foam insulation. For spray foam insulation in los angeles call us today.

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. Only spray polyurethane foam can be used for this application as batt insulation will end up sagging and blown insulation simply can t adhere to the roof decking. Then you can use other forms of insulation like fiberglass or cellulose to add r value now that you have a tight air seal. Insulstar spray foam insulation is a spray applied semi rigid cellular polyurethane foam plastic insulation having a maximum thickness of 2 inches and a nominal density of 2 0 pcf.

There can be a significant difference between the thickness of what your spray foam insulation requires to provide protection compared to what your local building codes mandate. This application effectively seals off the attic from the outdoors and eliminates air leakage and infiltration through the attic and roof areas. Synergy insulation is an industry leader in attic insulation and spray foam roofing. 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.

The icc es report for insulstar spray foam from ncfi esr 1615 issued february 1 2005 lists a maximum thickness of only 2 inches. Spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r value in just 1 inch. Foam insulation as an air sealing material. Spray foam insulation still is considered the most economical method to attain the air tightness requirement of 3 5 ach and lowest eri.