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.
Using the custom-fit refurbishment plate (DN 125 made of PP, DN 100 and DN 70 made of aluminium), which is flashed against the existing waterproofing without back flow, reliable installation of the refurbishment element is guaranteed. Flashing against the new waterproofing is carried out either with flashing collar and screw ring (refurbishment rainwater outlet 125) or with factory-fitted flashing collar (refurbishment rainwater outlet 75, 110).
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