Thermal Resistance

Since the EBS Structural Concrete Forms accepts different combinations of cladding and core thicknesses, the thermal resistance varies depending of the material used.

In the building industry, R-Value is used to measure the thermal resistance of the materials. It is the ratio of the temperature difference across an insulator and the heat flux; the bigger the number, the better the insulation effectiveness.

The following are our typical wall assembly R-Values, using single and double insulation, stucco on the exterior side and gypsum board on the inside:

Core Thickness           Insulation          R-value (Btu Ft2 ºF)

    4” (100mm)                  Single                13.5

    4” (100mm)                  Double               22.9

    6” (150mm)                  Single                13.7

    6” (150mm)                  Double               23.5

    8” (200mm)                  Single                13.9

    8” (200mm)                  Double               23.7

The temperatures considered were; interior 72ºF (23ºC) and exterior 93ºF (34ºC).

As an example, the Florida Building Code requires a minimum R-Value of R-6 for masonry walls.

The EBS walls are more than double the required by code using just a single insulation layer.