Dow Foam Board Insulation R Value

Data ranges from 0 00 to value shown due to the level of precision of the test method.

Dow foam board insulation r value.

Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term creep and fatigue deformation. Products with a higher r value have a higher cost but have an increased capacity to resist heat flow and therefore provide greater insulation. 1r values are consistent with criteria of astm c578 and requirements of ftc r value rule 16 cfr part 460. 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. For polyurethane pur and polyisocyanurate pir foam insulation systems our high performance surfactants boost energy efficiency. 2 in x 4 ft x 8 ft. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.

Shop dow r 10 common. The higher the r value the greater the insulating power. 2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first. Each type comes with unique advantages.

4based on 1 25 mm thickness. Value at yield or 5 whichever occurs first. 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. Values at yield or 10 deflection whichever occurs first.

For insulated panels and boards we offer polyurethane systems that are lightweight increase energy efficiency improve longevity and meet the most demanding industry requirements. R value determined by astm c518. Choose from three types of insulating foam core boards for wall insulation.