Alwitra - Model 400 - Extension Elements
The alwitra extension elements are used for bridging thermal insulation layers of warm roofs and are available in three lengths, depending on the thermal insulation layer thickness:
- extension element 200 for thermal insulation layer thicknesses from 50 - 200 mm
- extension element 400 for thermal insulation layer thicknesses from 50 - 400 mm
- extension element SL individual length according to customer specification
alwitra extension elements are made of highly impact resistant polypropylene (PP). As with alwitra rainwater outlets, flashing against the roof waterproofing is carried out with a special screw ring. alwitra extension elements are compatible with all alwitra rainwater outlets and provide backflow-proof connection by simply inserting them into the rainwater outlet. When used in combination with alwitra rainwater outlet S or SH, the extension element usually requires no cutting to length.