Tilt Up Concrete Wall R Value

What s the r value of a tilt up concrete wall the simple answer to the question is solid tilt up concrete panels have very little r value 0 08per inch.

Tilt up concrete wall r 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. 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. As building codes require greater energy efficiency the thickness of insulation increases. The 3 most common insulation methods for tilt up concrete construction.

Astm c1363 effective r value testing typical physical properties wall assembly description eff. However insulation can be added easily to any tilt up panel. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. You will notice in the findings shown in the isothermal analysis that the thermomass wall panel has a material r value of r 11 49.

Walls can range from r values of about 2 for uninsulated panels up to about 32 for walls containing thicker layers of insulation. In fact concrete allows energy to flow through it roughly 60x faster than insulation. 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. R value drywall steel framing 1 quik therm concrete wall 9 8 drywall steel framing 2 quik therm concrete wall 14 3.

But like all concrete systems tilt up offers high thermal mass and airtight construction.