We have drain connectors for circular downpipes; which are placed into pre-cast holes along the horizontal deck on the roof or podium. Corner fittings are available for holes on the junction of horizontal and vertical parapet wall, usually running through the wall and into HDPE drainpipe.
Collars are used to seal raised, exposed pipes (such as foul air pipes) which emerge through the deck. It is essential that the HDPE drainpipe is sealed properly at the point it goes through the deck to ensure that no water can get underneath the waterproofing membrane and into the internal shaft.
PVC outlets and collars are designed to be heat bonded to the PVC waterproofing membrane. They are compatible with most synthetic waterproofing membranes in the UK market (although installers and specifiers must ensure that the systems they use are compatible with our products as Wallbarn cannot be responsible for compatibility testing.
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