Cinder Block Insulation Value

Concrete masonry wall assemblies whole wall r values for.

Cinder block insulation value.

In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation. Walls are much greater than conventional 3 web concrete block walls. The increase achieved by injecting aminoplast foam insulation is up to 264 greater than is possible with normal weight concrete masonry walls injected with the same aminoplast foam insulation. 11 27 2006 07 51 am 9.

Notes to the table above. Many brick homes are actually wood framed homes with brick sheathing and have insulation values comparable to other wood framed buildings. 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. Rosato asbestos insulation is the most authoritative source on asbestos properties and gives data for the thermal conductivity of asbestos in different forms and with varying temperatures for magnesia asbestos insulation at mean temperatures ranging from 100 f to 400 f the k value thermal.

Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. The factor that affects r value is heat transference and the cinder block while light was also dense edit because it was wet poured. Following the chart shown here you can build a concrete masonry wall with an r value equal to the r value of an insulated 6 inch wood frame wall. By comparison plywood has an r value of 2 5.

The insulation may be rigid board extruded or expanded polystyrene or polyisocyanurate closed cell spray polyurethane foam cellular glass fibrous batt or fibrous blown in insulation note however that fibrous insulation is susceptible to moisture. Conventional 8 inch concrete block walls have an r value of 0 08 per square inch or about 2 5 for the whole block. 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. Interior insulation refers to insulation applied to the interior side of the concrete masonry as shown in figure 1.