R Value measures the thermal resistance of heat transfer through the product. The higher the R Value, the less heat is transferred through the product and therefore exhibits greater insulation properties. This value is measured as a reciprocal of the rate of heat transfer in watts, through one square meter of structure, divided by the difference in temperature across the structure. It is expressed in watts per square meter Kelvin. A roofing system with Scrim Facing Insulation has an R Value of between 1.45 and 1.6, tested using standard ISO6946.
Flame Spread and Combustibility are two critical factors of Thermal Roof Insulation.
DRB165 is classified in Accordance with SANS 428 using the SANS 10177 Part 5 and Part 10 test.
The product is suitable for use in both domestic and residential applications.
DRB251 is classified in Accordance with SANS 428 using the SANS 10177 Part 5 and Part 10 test.
The product is suitable for use in any application. Both the Domestic Grade and Industrial Grade product have UL723 Certificates, the highest standard of testing in the World. Receiving Class A in Flame Spread and Combustibility. The products have also been tested under standards ASTM E84 and British Standards 476, point 6 and 7 and passed.