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On the flat roof of a technical facility, we installed PVC waterproofing.

Steel sheet strips were secured with aluminum rivets to the metal roof panel to fasten the waterproofing.

Tapered insulation was installed to create a 2% roof slope.

A vertical PVC drain (ø 110mm) and 300g/m² geotextile were installed on the thermal insulation.

The waterproofing membranes were then hot-air welded at the overlaps.

View photos during and after installation: