I agree mostly with junio s answer.
Insulation value of concrete walls.
Concrete block makes a cost effective and structurally sound wall but it has.
Unfinished walls including foundation walls.
When using core insulation the insulation should occupy all.
And insulating concrete blocks.
In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation.
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.
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.
Therefore technically it has no insulation value.
A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other.
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.
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.
Products provide superior insulating properties.
Owens corning provides home builders and home buyers with a number of insulation solutions to meet their.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.
Products can be used on wood steel framing or concrete walls.
However too many people confuse insulation properties with thermal mass many icf dealers d.
3 for tabulated r values of walls with core insulation.
Note from this.
New construction or major renovations.