Block Wall Insulation R Value

Depending on the density of the blocks an 8 inch thick block wall without any other type of insulation has a thermal resistance value between r 1 9 and r 2 5.

Block wall insulation r value.

Core fill 500 masonry foam insulation was the wall insulation technology chosen for orlando s amway center the first new nba arena to earn leed gold certification. Using molded expanded polystyrene or extruded expanded polystyrene instead of expanded polyurethane would provide r values of 7 00 or 10 00 instead of 12 50. In the context of building and construction the r value is a measure of how well a two dimensional barrier such as a layer of insulation a window or a complete wall or ceiling resists the conductive flow of heat. Make sure your home is properly insulated in all these locations.

For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. You can mix the type and material of insulation too. When using core insulation the insulation should occupy all. 3 for tabulated r values of walls with core insulation.

As for the furring used for interior insulation the thermal resistance of the concrete masonry webs and any grouted cores should be accounted for when determining the thermal performance of the wall see tek 6 2c ref. Know exactly how much you need with our project calculators. R value measures how well certain building insulation materials can resist heat. When determining how much insulation you need don t guesstimate calculate.

If the cores aren t filled with steel and concrete for structural reasons they can be filled with insulation which raises the average wall r value. In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation. R value is the temperature difference per unit of heat flux needed to sustain one unit of heat flux between the warmer surface and colder surface of a barrier under steady state. Insulation needed to give 8 inch cmu wall same r value as insulated 6 inch wood frame wall.

Concrete blocks are used to build home foundations and walls and there are several ways to insulate them. The ideal attic insulation r value is different than the ideal wall insulation r value. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior. Insulation ratings can be improved by adding more layers of insulation.