Polyurethane Foam Insulation R Value

The r value goes up as the temperature drops.

Polyurethane foam insulation r value.

Spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r value in just 1 inch. 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. Open cell foam cells are not as dense and are filled with air which gives the insulation a spongy texture and a lower r value. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

As a result of the high thermal resistance of the gas spray polyurethane insulation typically has an initial r value around r 3 4 to r 6 7 per inch. Polyurethane is a closed cell foam insulation material that initially contains a low conductivity gas in its cells. In comparison glass wool typically has an r value of only r 3 to r 4 per inch. 4 5 21.

Lower strength and rigidity. R 0 77 30 phenolic foam insulation r values. Expect an r value of about 3 6 per inch. 4 8 7 21.

Corrosion problems when in contact with steel roofing moisture. Very good air bypass leak sealing properties. This makes it ideal for insulating roof assemblies that need to dry inward. Higher strength and rigidity.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. Choose foam it green spray foam insulation kits and don t settle for less than you deserve. Air barrier at full wall thickness. Open cell foam is permeable to moisture but impermeable to air.

Phenolic foam spray insulation. Important for people living in the north such as minnesota is that the r value at 0 degrees f is 4 55. Higher r value greater than 6 0 per inch r value approximately 3 5 per inch high moisture barrier lower moisture permeability lower moisture barrier higher moisture permeability air barrier. 8 3 4 4 8 2 20.

By expanding 100 times its original size icynene seals cracks and gaps in attics walls ceilings and other spaces where air might escape. 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. Eps has an r value of 3 85 at 75 degrees f.