Expanded Polystyrene Roof Insulation R Value

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.

Expanded polystyrene roof insulation r value.

This product typically has an r value of 3 6 to 4 0 per inch of thickness. It provides r values that range from 3 6 to 4 2 per inch. Choose this option for areas that need a good amount of strength and water resistance. Also called styrofoam insulation this is the least expensive material.

Some products have reinforced facing to make them sturdier. Dees dated august 1984. From flat and custom tapered korolite insulation to quad deck insulated concrete forms and geofoam. R value means the resistance to heat flow.

Content tagged with r value. For over 50 years insulfoam has been enabling building professionals to construct high quality building insulation systems at a minimal cost. Dees show 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.

Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. Dupuis and jerome g. The report shows that samples of eps insulation had no deterioration in r value. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.

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. Roof insulation with rigid foam. Insulfoam is a division of carlisle construction materials a wholly owned subsidiary of carlisle companies nyse. Dupuis and jerome g.

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. 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. 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. Flat expanded polystryene eps roof insulation provides high long term r value of eps and labor saving face laminates.

The higher the r value the greater the resistance to heat flow.