I agree mostly with junio s answer.
Insulation value of concrete walls.
Owens corning provides home builders and home buyers with a number of insulation solutions to meet their.
Foam board to be placed on outside of wall usually new construction or inside of wall existing homes.
New construction or major renovations.
Some manufacturers incorporate foam beads or air into the concrete mix to increase r values.
The products are easy to handle score cut and install and no special tools are needed.
A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other.
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.
But concrete is a conductor of thermal energy not an insulator.
In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation.
Unfinished walls including foundation walls.
3 for tabulated r values of walls with core insulation.
However too many people confuse insulation properties with thermal mass many icf dealers d.
Products provide superior insulating properties.
And insulating concrete blocks.
Therefore technically it has no insulation value.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
Concrete block makes a cost effective and structurally sound wall but it has.
Note from this.
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.
When using core insulation the insulation should occupy all.
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.