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To comply with the SABS recent SANS 10400 XA regulations, the building control officer will require the architect/developer to provide a calculation to prove that the R-Value for a plastered cavity wall meets/exceeds the requirement of 0.35. Use this spreadsheet to show your calculations.
There are six climate zones in South Africa with different thermal requirements for buildings – measured in the R-values (thermal resistance in m2.K/W) or heating and cooling loads (energy consumption in KWh). The first step
This webpage calculates the R-value of walls, roofs and suspended floors for most insulation material R-values. It uses the "isothermal planes" method, the same method as used in NZS4214:2006.
The R-value of thermal insulation is determined by several factors, including the type of insulation material, its thickness, and its density. Understanding R-values in South Africa is important because it can help you choose the right insulation for your home.
Using our concrete calculator is as easy as 1, 2, 3. All you have to do is enter the dimensions of the projected area for coverage, and we will provide you with an instant result for how much concrete you’ll need.
7.1 Roofs & Ceilings - Minimum required R-Values 31 7.2 Recommended Levels of Insulation to Achieve 32 7.3 R-Values considered to be achieved by Reflective Foil Laminates 33 7.4 Why use a Radiant Barrier / Reflective Foil 34 7.5 Typical R-Values for air spaces and air films 35 7.6 Typical R-Values for roof and ceiling constructions 35
R-Values. The R-Value is the measure of an insulation product’s ability to restrict heat transfer. The R-Value is therefore indicative of an insulation product’s thermal insulation performance. The higher the R-Value, the better the performance and effectiveness of the insulation product.
