Dow Polystyrene Insulation Board R Value

R values are expressed in ft h f btu.

Dow polystyrene insulation board r value.

2 vertical compressive strength is measured at 10 percent deformation or yield whichever occurs first. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term. 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.

Dow styrofoam scoreboard insulation board blue board 4 ft by 8 ft sheet 1 5 thick r value 7 5 a nonstructural rigid board insulation manufactured of extruded polystyrene foam xps. Dow scoreboard is scored over 16 and 24 making it. Dow invented a process for extruding polystyrene to achieve a closed cell foam that resists moisture. 2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first.

Ask your seller for the fact sheet on r value. 2 in x 4 ft x 8 ft. How does it work. R means resistance to heat flow.

R value determined by astm c518. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate. The higher the r value the greater the insulating power.