Rigid Foam 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.

Rigid foam r value.

4 5 21. Because rigid foam plastic insulation products are not all aged in accordance with the same standards it is useful to publish comparison r value data. There are three basic foam insulation board products on the. R values vary depending on many factors including the mean temperature at which the test is conducted and the age of the sample at the time of testing.

It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer. 8 3 4 4 8 2 20. 4 8 7 21. Foam board insulation types.

Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. R values vary depending on many factors including the mean temperature at which the test is conducted and the age of the sample at the time of testing. Rigid foam r values range from r 1 for 1 4 inch thick sheathing panels to r 15 for 3 inch thick panels. R value is not entirely a function of the thickness of the material as the facing material and type of foam used will affect the r value of the material.

Rigid insulation r value by comparison usually ranges from r 4 0 to 6 5 and may get as high as r 8 7 depending on the insulation material. I ve written several posts about how to insulation basement walls in which i promote the use of foam board insulation as the first line of defense against moisture and mold. R 3 2 polyisocyanurate rigid foam insulation board r matte plus 3 thermasheath 3 is rigid foam r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. R 0 77 30 phenolic foam insulation r values.

Because rigid foam plastic insulation products are not all aged in accordance with the same standards it is useful to publish comparison r value data. Fiberglass insulation packs in more r value per cubic inch than rigid foam insulation does. Rigid insulation is usually made up of fibrous materials or plastic foams. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck.

Rmax r matte plus 3 1 2 in. The fibrous materials such as wood cane or vegetable fibers are mixed with fillers and binders to form insulation boards. Phenolic foam spray insulation. The r value for foamular xps insulation.

Corrosion problems when in contact with steel roofing moisture.