Dow Polystyrene Insulation Board R Value

Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term.

Dow polystyrene insulation board r value.

Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate. This product typically has an r value of 3 6 to 4 0 per inch of thickness. Dow scoreboard is scored over 16 and 24 making it. R value determined by astm c518.

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. 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. Styrofoam extruded polystyrene insulation is rated at an r value of 5 0 per inch at 75 f.

Shop dow r 10 common. 2 in x 4 ft x 8 ft. Ask your seller for the fact sheet on r value. 2 vertical compressive strength is measured at 10 percent deformation or yield whichever occurs first.

The higher the r value the greater the insulating power. 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. How does it work.