SINIAT WALL THERMAL CALCULATOR
The thermal resistance of an external wall has significant influence on the energy efficiency of a building. Total R-Value, as per 2019 NCC Volume Two, is the sum of the thermal resistances, R-values, of the individual component layers in a composite element including any building material, insulating material, airspace and associated surface resistances. This calculator can be used to estimate the Total R-Value of a wall of Class 1 and 10 buildings in any Australian state and territory and wall of Class 2 building in Queensland.
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