Foam Board Insulation R Value

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.

Foam board insulation r value.

0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497. 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. Kingspan insulation r 3 common. Typically a higher insulation r rating means better climate control and better energy efficiency for your home.

Compare click to add item insofast exi 2 5 r 10 eps foam board insulation panels 40 sq. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. 0 56 in x 4 ft x 8 ft. Rigid foam insulation packs a lot of r value into a relatively thin package.

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. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior. For every type and material of insulation check the r value per inch of thickness that the manufacturer has listed. Fiberglass insulation is less than half the price of rigid foam insulation when calculated by r value per square foot.

It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. 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. Rmax r matte plus 3 1 2 in. This is the product that i typically use to insulate basement walls.

For example insulating a 10 square foot wall area to r 15 costs about 3 40 to 4 00 with fiberglass insulation while a comparable r value for rigid foam costs roughly 10. Add to list click to add item insofast exi 2 5 r 10 eps foam board. When making a selection below to narrow your results down each selection made will reload the page to display the desired results. It is often used as a layer of continuous insulation on exterior walls and in the roof.

Polyiso comes in several thicknesses and is used over house sheathing underneath siding or in attic spaces where its reflective properties are very effective. This is an even more dense and more expensive foam board insulation. 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.