Expanded Polystyrene Roof Insulation R Value

Expanded polystyrene insulation is similar to the foam used for packing peanuts and it s typically used for insulated concrete forms also knows as icf s. Airfoam offers a wide range of high performance budget friendly roof insulation products over more than 45 years expanded polystyrene eps roofing insulation became the solution of choice for new and re roofing needs because of its many benefits. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.

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Expanded polystyrene roof insulation r value.

The report shows that samples of eps insulation had no deterioration in r value. Typically provides the greatest insulating value available eps maintains r value in the report on expanded polystyrene insulation for use in built up and single ply roofing systems dated august 1984 researchers rene m. Choose this option for areas that need a good amount of strength and water resistance. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

The higher the r value the greater the resistance to heat flow. Eps insulation 1 0 pcf provides a typical r value of 3 85 per inch k factor 0 26 at a mean temperature of 75 f and a typical r value of 4 17 per inch k factor 0 24 at a mean tem perature of 40 f. 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. Flat expanded polystryene eps roof insulation provides high long term r value of eps and labor saving face laminates.

R value means the resistance to heat flow. Dees dated august 1984. Dees show that samples of eps insulation had no deterioration in r value. It provides r values that range from 3 6 to 4 2 per inch.

Some products have reinforced facing to make them sturdier. Flat expanded polystryene eps roof insulation is suitable for use with all roofing membrane materials flat eps roof insulation is compatible with loose laid and attached single ply membranes conventional built up roofing or modified bitumen systems. 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. Dupuis and jerome g.

The r value performance for eps insulation is discussed in the report report on expanded polystyrene insulation for use in built up and single ply roofing systems by rene m. Dupuis and jerome g. Insulfoam is a division of carlisle construction materials a wholly owned subsidiary of carlisle companies nyse. Roof insulation with rigid foam.

For over 50 years insulfoam has been enabling building professionals to construct high quality building insulation systems at a minimal cost. Also called styrofoam insulation this is the least expensive material. This product typically has an r value of 3 6 to 4 0 per inch of thickness. Csl and is the nation s largest manufacturer of block molded expanded polystyrene eps.

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