Eps Foam R Value Per Inch

R5 3 r6 1 product length ft 10 ft 1 2 ft 1 8 ft 2 product width in.

Eps foam r value per inch.

Eps is the insulation used most widely in insulated concrete forms and structural insulated panels sips. The r value at 180 day real time age and 75ºf mean temperature is commonly used to compare products and is the value printed on the product. Data ranges from 0 00 to value shown due to the level of precision of the test method. In november 1992 nrca issued another bulletin in which it reaffirmed recommending an in service r value of 5 6 per inch of foam thickness for hcfc blown polyisocyanurate board products.

Manufactured densities of eps and the temperature at which the reported r value was measured impact the true r value of eps. In the manufacturing process for polyisocyanurate blowing agents defuse from the cellular structure of the foam for many years after manufacture. Eps insulation features an average r value of 3 6 per inch. Owens corning foamular 150 1 in.

Values at yield or 10 deflection whichever occurs first. When certain types of plastic facers are applied the composite product can feature an r value of up to 3 8 at one inch. Eps has the lowest average r value of the three most common types of rigid foam insulation around r 4 per inch. The higher the r value the higher the insulating capability.

In addition to providing energy efficiency eps without film facers has a perm rating of up to 5 0. It is denser than eps and. Eps is used under roofing over foundation walls and beneath siding. Eps is suitable for ground contact and can be treated to resist insects.

It also is the least expensive. 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. This product typically has an r value of 3 6 to 4 0 per inch of thickness. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. R 5 scored square edge rigid foam board insulation sheathing model 20we view the owens corning exterior. Shop eps insulation shop polyiso insulation shop xps insulation sort by. Eps is the eifs industry standard due to its established performance and overall value when compared with other board insulation options.

The industry standard mean temperature for measuring r value is 75of. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings.