Temperature resistance
Temperature resistance
Temperature resistance refers to the ability of a material to withstand extreme temperatures. In roof structures, materials are exposed to high temperatures during summer and sub-zero temperatures during winter.
It is assumed that temperatures beneath the surface of a ventilated pitched roof generally do not exceed 80°C. For this reason, the DIN standard specifies testing the temperature resistance of roof membranes within a range from −40°C to +80°C.
Eurovent® roof membranes are tested within a wider temperature range, up to 120°C. Roof membranes manufactured from polypropylene remain stable within a range of −40°C to +100°C, while higher-grade membranes can withstand temperatures of up to +120°C under short-term conditions without significant changes in product performance.
It should also be noted that the softening temperature of polypropylene exceeds 120°C, while its melting point is ≥160°C. In terms of the temperature resistance of roof membranes, proper roof ventilation is essential. Ventilation should be correctly designed and executed from the eaves to the ridge. When this element of the roof structure is properly implemented, the service life and thermal stability of the membrane increase significantly over time.
Key points
- Eurovent® membranes are tested within an extended temperature range from −40°C up to 120°C.
- Ventilation in pitched roofs must be properly designed and unobstructed from the eaves to the ridge.
