Technical

ThermaRoof® range and properties

ThermaRoof® is available in four grades of thermal resistance. Each grade offers three classes of compressive strength and associated physical properties.

All available in 24 kg/m³, 28 kg/m³ or 32 kg/m³ densities.

Additional information

Flame resistance. Like many construction materials, ThermaRoof® must be considered combustible and constitutes a fire hazard if improperly used or installed. The material contains a flame retardant additive to inhibit accidental ignition from small fire sources.

Solvent attack. ThermaRoof® is subject to attack by petroleum based solvents and coal tar products. Care should be taken to prevent contact between ThermaRoof® and these materials and their vapours.

Membrane compatibility. Membrane compatibility with RMAX ThermaRoof® should always be checked. Some membranes contain components or solvents which may attack the insulation. When a PVC membrane is used, a slip-sheet is required to eliminate the migration of the PVC plasticiser out of the membrane into the EPS. Acrylic paint on the EPS may replace the slip-sheet.

Ultraviolet degradation. Prolonged exposure to sunlight will cause a slight discolouration and surface dusting of ThermaRoof® insulation, although the insulating properties will not be significantly affected unless exposure is so excessive that thickness is lost. ThermaRoof® should be covered to prevent ultra violet degradation if it is to be stored in the open for extended periods.

Temperature resistance. ThermaRoof® will be affected by high temperatures, and contact with high temperature equipment or processes must be avoided. Maximum long-term service temperature is 80°C.

CFC free. As with all RMAX expanded polystyrene products, ThermaRoof® does not contain CFC's or other ozone depleting substances.

Material safety data sheet. Adchem material safety data sheet is available for ThermaRoof® MSDS No.19507.

Physical properties of ThermaRoof® expanded polystyrene