Polyurethane Spray Foam Insulation R Value

It has a lower r value per inch than closed cell foam and is vapor permeable.

Polyurethane spray foam insulation r value.

There are two types of polyurethane spray foam insulation. Spray polyurethane foam spf basics. Polyurethane is a closed cell. Insulation or other building material 9.

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. Multiple immediate passes with no wait time may also be applied. Open cell foam is permeable to moisture but impermeable to air. Polyurethane spray closed cell foam insulation.

Polyisocyanurate polyurethane foam insulation r values. Thanks to thanks to andrew cole for correcting our data on this product. 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. However because spray foam must be mixed on site and applied while wearing special protective clothing you must leave installation to the professionals.

Closed cell spray foam insulation. Higher r value greater than 6 0 per inch r value approximately 3 5 per inch. By expanding 100 times its original size icynene seals cracks and gaps in attics walls ceilings and other spaces where air might escape. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.

Spray polyurethane foam comes in a range of densities and cell structure. For 6 inches r 15 or r 19 etc. Expect an r value of about 3 6 per inch. 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.

For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch. 1 8 2 pound polyurethane foam has the highest r value of readily available spray foam insulation used in homes and buildings. What is spf how does it work. Why spray foam insulation is so effective in meeting code requirements is that it has a higher r value per inch of product used than batts.

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. Closed cell spray foam r values. With high yield and excellent adhesion it s an. Low density foams are referred to as open cell spf while higher density foams are referred to as closed cell foam.

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.