Circular/downpipe outlets are designed to be secured around the drainage hole and sandwiched between two layers of waterproofing membrane. We supply a circular drain connector with a smooth flange, a circular drain connector with perforated flange, and our special Siphon outlet drain connectors to prevent bad odours from escaping through the drain.
Circular roof outlets are installed across the deck area approximately 25-30m2 apart. They are designed to be mechanically fixed or stuck with adhesive. They are suitable for bituminous or EPDM membranes.
Circular roof manufactured with a perforated flange and a ribbed shank for more secure bonding. These are usually installed in a sandwich application with liquid bituminous memabranes.
Corner fittings are installed where the horizontal deck meets the upstand, and connects into the inside of HPDE drainage pipes going out of and down the outside of the building.
SIPHON CONNECTORS – Wallbarn offers a top quality, highly designed circular drainage outlet with a Siphon mechanism to ensure bad odours do not escape form the top of pipework.