The thermally insulated alwitra rainwater outlet S (vertical) made of highly impact resistant polypropylene (PP) provides the connection between vertical drainage pipes and the waterproofing at cold or inverted roofs. Thus, pipes DN 125 (OD 125 mm) can be connected directly, pipes DN 100 (OD 110 mm) using the included reducer 125/110. Corresponding reducers/adapters are optionally available for drainage pipes DN 70 (OD 75 mm) or DN 150 (OD 160 mm). So, every rainwater outlet fits four different diameters (DN 70, DN 100, DN 125 and DN 150).
Flashing against the roof waterproofing is carried out with a special screw ring. In combination with an oval gasket and a corresponding flashing collar, a reliable and long-term waterproof connection is easily established between the roof waterproofing and the rainwater outlet.
At classic warm roofs, instead of the roof waterproofing, all standard vapour barriers can be flashed against the same way. Thermal insulation layers can be bridged by an extension element. Extension elements are available in various lengths.
A combined leaf guard/gravel stop is included.