ISOTHERM Thermal Insulation maintains a comfortable indoor climate all year round; keeping interiors warm in winter and cool in summer.

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.

The R-Value of ISOTHERM is dependent on the thickness selected. The thicker the product the better the performance.

Up R-Values
This is the resistance to the upward flow of heat; sometimes referred to as "winter" R-Values or warming.

Down R-Values
This is the resistance to the downward flow of heat; sometimes referred to as "summer" R-Values or cooling.

Total R-Values
This is the total thermal resistance provided by a roof or ceiling assembly and /or wall, including the insulation material.

Total R-Values are the best indicators of performance.

ISOTHERM R-Values
40 mm – 0.88
50 mm – 1.10
75 mm – 1.65
100 mm – 2.20

South Africa's Climatic Zones according to TIASA and SANS 204 is demonstrated in the below map:
Depending on the thickness of ISOTHERM installed and the climatic zone, ISOTHERM's thermal performance is as follows:

In summer
A maximum temperature reduction of up to 7°C when ISOTHERM insulated ceilings are installed in a dwelling with previously no insulation. This is dependant on the question of the installation as well as the thickness of the product.

In winter
You get a reduced heating energy requirement of between 40% and 70%.
*Heating energy requirements assessed in the Department of Housing's standard House using Agrément South Africa's thermal software.