Polyurethane Foam Insulation R Value

There are two types of polyurethane spray foam insulation.

Polyurethane foam insulation r value.

Higher strength and rigidity. The r value goes up as the temperature drops. Air barrier at full wall thickness. Choose foam it green spray foam insulation kits and don t settle for less than you deserve.

1 per bsaf 1 cu ft. Expect an r value of about 3 6 per inch. Like polyiso foam the r value of closed cell polyurethane insulation can drop over time as some of the low conductivity gas escapes and air replaces it in a phenomenon known as thermal drift or ageing. Important for people living in the north such as minnesota is that the r value at 0 degrees f is 4 55.

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. 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. 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 comparison glass wool typically has an r value of only r 3 to r 4 per inch.

4 5 21. 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. Very good air bypass leak sealing properties. This makes it ideal for insulating roof assemblies that need to dry inward.

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. Phenolic foam spray insulation. Polyurethane is a closed cell foam insulation material that initially contains a low conductivity gas in its cells.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Lower strength and rigidity. Eps has an r value of 3 85 at 75 degrees f. R 0 77 30 phenolic foam insulation r values.

Open cell foam is permeable to moisture but impermeable to air. 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. Corrosion problems when in contact with steel roofing moisture.