"Standard 250" roof drains are intended for drainage of flat roof covered with PVC hydro-insulating membrane. Using a sealing flange combined with a downpipe provides a tight roof drainage system.
Made of special material characterised by high resistance to UV radiation, ozone, and other atmospheric and chemical agents, adapted to PVC membranes, and easily weldable. Due to refining additives, the roof drains maintain their flexibility and dimensional stability in a wide temperature range.
The roof drains are welded to PVC in 450 – 520 ˚C.
Higher temperature may cause damage to the UV-resistant layer, leading to deterioration of the roof drains and loss of integrity.
A) STANDARD roof drain
B) PVC membrane
C) Thermal insulation
D) Water vapour barrier