Polyurethane Spray Foam Insulation R Value

Polyisocyanurate polyurethane foam insulation r values.

Polyurethane spray foam insulation r value.

For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch. Whether retro fitting a home or choosing insulation when building a new one spray polyurethane foam spf insulation is among the best ways to increase energy efficiency and improve comfort. Spray polyurethane foam spf basics. However because spray foam must be mixed on site and applied while wearing special protective clothing you must leave installation to the professionals.

What is spf how does it work. Expect an r value of about 3 6 per inch. Closed cell spray foam insulation. Thanks to thanks to andrew cole for correcting our data on this product.

1 8 2 pound polyurethane foam has the highest r value of readily available spray foam insulation used in homes and buildings. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. There are two types of polyurethane spray foam insulation. Spray polyurethane foam comes in a range of densities and cell structure.

Icynene sprayed in foam is an insulation and air seal system that works to help ensure that your home doesn t suffer from air loss while providing an effective r value. By expanding 100 times its original size icynene seals cracks and gaps in attics walls ceilings and other spaces where air might escape. Multiple immediate passes with no wait time may also be applied. Low density foams are referred to as open cell spf while higher density foams are referred to as closed cell foam.

Aging effects comments. The bottom line is that spray polyurethane foam is better than any other type of insulation for reducing air leakage. Closed cell spray foam r values. For 6 inches r 15 or r 19 etc.

Insulation or other building material 9. Polyurethane is a closed cell. Johns manville corbond iii closed cell spray polyurethane foam insulation offers and r value of r 7 per inch and can be applied in a single pass to a maximum of 3 5 inches providing superior thermal performance with seamless air sealing and moisture control in a single step. Open cell spray polyurethane foam also sometimes referred to as low density or 1 2 pound spf weighs between 0 4 and 0 6 pounds cubic foot when fully cured.

Polyurethane spray closed cell foam insulation. It has a lower r value per inch than closed cell foam and is vapor permeable. Closed cell spray foam has a far better r value per inch than other less effective insulations like cellulose fiberglass or even open cell foam. It is spray applied to a substrate and typically expands about 150 times its original volume to form a semi rigid flexible non structural plastic insulation.

Higher r value greater than 6 0 per inch r value approximately 3 5 per inch.