All bulk insulation materials have a Thermal Resistance or R value which is a measure of their performance. The thermal resistance, R-value is the ability of the insulation to resist the transfer of energy in the form of heat and is the most important factor when selecting insulation. The higher the R-value the more effective the insulation. 

The R-value should be visibly displayed on the packaging. When purchasing ceiling insulation, compare R-values and ensure that you are getting the best “R-value” for your money. 

Aerolite meets your R-value requirements with a range of thicknesses from 100mm to 135 mm according to the minimum stipulated requirements SANS 10400-XA
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