Dow Extruded Polystyrene Board Insulation R Value

R values are expressed in ft h f btu.

Dow extruded polystyrene board insulation r value.

Styrofoam brand scoreboard is an r 10 insulation board. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. 2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first. Styrofoam brand scoreboard insulation meets astm c578 type iv standard specification for rigid cellular polystyrene thermal insulation with an r 5 value per inch the 2 in.

Blue board can be used both on exterior and interior walls to give you a continuous insulation barrier that can increase effective r value of the wall by up to 20. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term. 2 in x 4 ft x 8 ft. R value determined by astm c518.

This material offers the highest r values about r 6 to 6 5. 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. Working with home insulation boards. It s high r value year after year even after prolonged exposure to moisture and freeze thaw cycling.

Owens corning foamular 250 extruded polystyrene xps rigid foam insulation is a closed cell highly moisture resistant rigid foam board well suited to meet the needs for a wide variety of residential and commercial construction applications. 0 55 in x 4 ft x 8 ft. Shop dow r 10 common. This product typically has an r value of 3 6 to 4 0 per inch of thickness.

It provides about r 5 per inch. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate. The higher the r value the greater the insulating power. R means resistance to heat flow.

2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first. Products with foil facing help the panels resist moisture vapor. Key features excellent long term stable insulating performance at r 51 per inch exceptional moisture resistance long term durability limited lifetime warranty2 maintains 90 of r value and covers all astm c578 properties. 0 55 in x 4 ft x 8 ft residential sheathing square edge 1 faced polystyrene garage door foam board insulation with sound barrier item 15348 model 201549.