Insulation Value Of Concrete Walls

A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other.

Insulation value of concrete walls.

When using core insulation the insulation should occupy all. In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation. Some manufacturers incorporate foam beads or air into the concrete mix to increase r values. Note from this.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. I agree mostly with junio s answer. But concrete is a conductor of thermal energy not an insulator. Therefore technically it has no insulation value.

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. The products are easy to handle score cut and install and no special tools are needed. The r value of an uninsulated 8 inch thick basement wall built using normal weight concrete is 1 35 based on data from the 1993 american society of heating refrigeration and air conditioning engineers handbook. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

However too many people confuse insulation properties with thermal mass many icf dealers d. New construction or major renovations. Owens corning provides home builders and home buyers with a number of insulation solutions to meet their. Products provide superior insulating properties.

By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. 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. And insulating concrete blocks. Concrete block makes a cost effective and structurally sound wall but it has.

Unfinished walls including foundation walls.