2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first.
Dow extruded polystyrene board insulation r value.
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.
Dow styrofoam insulation blue board is a nonstructural rigid board insulation manufactured of extruded polystyrene foam xps.
Shop dow r 10 common.
R value determined by astm c518.
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 material offers the highest r values about r 6 to 6 5.
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.
Products with foil facing help the panels resist moisture vapor.
2 in x 4 ft x 8 ft.
0 55 in x 4 ft x 8 ft.
Ask your seller for the fact sheet on r value.
R values are expressed in ft h f btu.
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.
Choose this option for areas that need a good amount of strength and water resistance.
Working with home insulation boards.
Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.
Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate design safety factors should be used to prevent long term.
2 vertical compressive strength is measured at 10 percent deformation or at yield whichever occurs first.
This product typically has an r value of 3 6 to 4 0 per inch of thickness.
It s high r value year after year even after prolonged exposure to moisture and freeze thaw cycling.
The higher the r value the greater the insulating power.
Since styrofoam brand extruded polystyrene foam insulations are visco elastic materials adequate.
It provides about r 5 per inch.
R means resistance to heat flow.
