Tilt Up Concrete Wall R Value

By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.

Tilt up concrete wall r value.

The steady state thermal analysis shows the total isothermal r value for the wall with the ability to factor in thermal breaks such as metal ties or solid concrete sections. Walls can range from r values of about 2 for uninsulated panels up to about 32 for walls containing thicker layers of insulation. 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. But like all concrete systems tilt up offers high thermal mass and airtight construction.

Astm c1363 effective r value testing typical physical properties wall assembly description eff. The standard r value of ready mix concrete used in the tilt up industry including the air film is 1 49 for an 8 inch wall panel. However insulation can be added easily to any tilt up panel. 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.

As we said before the r value measures the thermal resistance of a material. R value drywall steel framing 1 quik therm concrete wall 9 8 drywall steel framing 2 quik therm concrete wall 14 3. In fact concrete allows energy to flow through it roughly 60x faster than insulation. As building codes require greater energy efficiency the thickness of insulation increases.

However since it s easy to add insulation to any tilt up panel this number can rise substantially.