Rigid Foam Insulation R Value

Foam board insulation types.

Rigid foam insulation r value.

Choose the right type of rigid foam for your needs. Rigid insulation is usually made up of fibrous materials or plastic foams. Rigid insulation is typically a hard foam material that is used to help regulate the temperature in buildings. This type of rigid foam usually comes with a reflective foil facing on both sides so.

This typically makes it a more efficient choice. 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 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.

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. 1 844 446 7858 my account. 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. When choosing rigid foam insulation you have three main options.

Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. 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. 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. Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.

The thermal resistance of this material or effectiveness at keeping heat from passing through is known as rigid insulation r value. The time of testing. Rigid foam insulation packs a lot of r value into a relatively thin package. There are three basic foam insulation board products on the.

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. 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. 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. 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.