By sledding

Vertical roof well vapor barrier is installed in the dam barrier under the insulation

even if the accumulated water on the roof has not reached the selected overflow height

Vægt 390 g

Construction silicone

Opstuvningsring-Stål Ø160 H25/35 mm nødafvanding Ø160 mm Grenrør 72gr. By sleddingStowage ring Diameter: 160 mm Material: Stainless steel AISI 304 O ring: EPDM rubber The back up ring is installed when the roof well is used for emergency drainage. The ring is made of stainless steel, it is reversible and so the height can be either 25 or 35 mm depending on the desired overflow height. Note that small amounts of water can flow from the roof surface to the roof well, even if the accumulated water on the roof has not reached the