Waterproofing

Proper drainage in the form of outlets prevents the pooling of rainwater, which considerably reduces the expected lifetime of roof covering. Inadequate outlets may often themselves leak, causing significant damage to the internal layers of roofing. alwitra’s specially designed outlet is the perfect solution for all drainage issues of low slope roofs.

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.

The thermally insulated alwitra rainwater outlet W (horizontal) made of highly impact resistant polypropylene (PP) provides the connection between horizontally installed drainage pipes and the waterproofing on cold or inverted roofs.

In the case of refurbishment with additional thermal insulation, where it is not possible to replace existing outlets, it is recommended to install alwitra refurbishment rainwater outlets.