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. Styrofoam extruded polystyrene insulation is rated at an r value of 5 0 per inch at 75 f. How does it work. R value determined by astm c518.

Resistance to the flow of heat is measured in r value the higher the r value the harder it is for heat to get through. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate. 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.

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. The higher the r value the greater the insulating power. R means resistance to heat flow. This product typically has an r value of 3 6 to 4 0 per inch of thickness.

2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first. Shop dow r 10 common. Ask your seller for the fact sheet on r value.