Block thickness in inches.
R value of 10 poured concrete wall.
A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other.
Concrete block makes a cost effective and structurally sound wall but it has.
Cedar logs and lumber.
However too many people confuse insulation properties with thermal mass many icf dealers d.
Concrete or concrete block.
Wood frame walls 3 plus r value of the insulation used floors above unheated spaces 2 plus r value of the insulation used.
1 25 2 nominal 1 1 2 1 88 2x4 3 1 2 4 38 2x6 5 1 2 6 88.
Use the r value table below to help you determine the r value of your wall or ceiling assemblies.
Therefore technically it has no insulation value.
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.
Eps block forms poured in place with concrete block walls 1 7 8 thick 15 2 15 7 103 7.
If you had a 20 x 30 6m x 9m basement with concrete or concrete block walls your heat loss could easily be over 1 million btus per day through the walls.
R inch r thick ness insulation materials fiberglass batt 3 14 fiberglass blown attic 2 20 1 fiberglass blown wall 3 20 rock wool batt 3 14 rock wool blown attic 3 10 rock wool blown wall 3 03 cellulose blown attic 3 13 cellulose blown wall 3 70 vermiculite 2 13 air entrained concrete 3 90 urea terpolymer foam 4 48.
R value of 8 20cm poured concrete 0 64 r value of 4 10cm brick 0 80 r value of 1 3cm sheetrock 0 45 r value of 1 3cm sheathing 1 31.
I agree mostly with junio s answer.
Concrete block walls u values r values.
By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.
2 x 4 wood stud wall 16 o c r 11 batts 1 2.
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.
But concrete is a conductor of thermal energy not an insulator.