Rigid Foam Insulation R Value

It is often used as a layer of continuous insulation on exterior walls and in the roof.

Rigid foam insulation r value.

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. Rigid foam insulation packs a lot of r value into a relatively thin package. 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.

Choose the right type of rigid foam for your needs. 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. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart. Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.

This typically makes it a more efficient choice. Foam board insulation types. Rigid insulation is typically a hard foam material that is used to help regulate the temperature in buildings. 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.

The thermal resistance of this material or effectiveness at keeping heat from passing through is known as rigid insulation r value. This type of rigid foam usually comes with a reflective foil facing on both sides so. The r value for foamular xps insulation is provided from testing at two mean temperatures 40ºf and 75ºf and from two aging conditioning techniques 180 day real. 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.

Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. The time of testing. When choosing rigid foam insulation you have three main options.

Used in this way the foam lowers the loss of energy through framing members a phenomenon called thermal bridging and increases the overall r value of the roof or wall assembly. 1 844 446 7858 my account. Rmax r matte plus 3 1 2 in. Known as polyiso for short polyisocyanurate foam has the highest r value per inch r 6 5 to r 6 8 of any rigid insulation.