Dow Extruded Polystyrene Board Insulation R Value

Products with foil facing help the panels resist moisture vapor.

Dow extruded polystyrene board insulation r value.

0 55 in x 4 ft x 8 ft. Working with home insulation boards. 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. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate.

This material offers the highest r values about r 6 to 6 5. R values are expressed in ft h f btu. Ask your seller for the fact sheet on r value. 2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first.

2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first. It s high r value year after year even after prolonged exposure to moisture and freeze thaw cycling. 2 in x 4 ft x 8 ft. Choose this option for areas that need a good amount of strength and water resistance.

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. Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term. This product typically has an r value of 3 6 to 4 0 per inch of thickness. 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.

The higher the r value the greater the insulating power. R means resistance to heat flow. 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. Shop dow r 10 common.

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. It provides about r 5 per inch. R value determined by astm c518. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.