Bauder Bitumen Refurbishment Outlet DN 125


A thermally insulated cast polyurethane rainwater outlet with vertical spigot giving thermal continuity. The outlet comes with a pre-attached bituminous flange to ensure waterproofing integrity between the outlet and membranes. Outlet has a flow rate of 6.0 litres/sec based upon requirements of BS EN 12056:3:2000.

For use with Bauder bituminous waterproofing membranes when connecting into conventional gravity drainage systems. The product is designed to be used in cold roof and existing un-insulated roof scenarios. The spigot when fitted into an existing outlet using the ‘push fit’ seal, will accommodate internal diameters ranging from 134 to 168mm. There are two flexible seals supplied with the outlet. The smaller seal (lip seal) to fit pipework 134 to 144mm and the larger seal (profiled seal) to fit pipework 140 to 168mm. There is no reason to use both seals, so discard the seal that is not required.

This product does not require a Declaration of Conformity (DoC) or Declaration of Performance (DoP).

technical Data sheet 
Characteristic Unit Value
Length of outlet including spigot mm 250
Width of outlet opening mm 108
Width of spigot (external) mm 125
Width of spigot opening mm 120
Width of outlet body mm 259
Weight mm 2.6
Flow rate performance litres/sec 6.0*
*Flow rate performance data using a 35mm head of water (including leaf grille), based upon requirements of BS EN 12056:3:2000. Further flow rate performance data can be obtained within this document. For bespoke drainage calculation performance data, please contact Bauder Limited.

All further technical information is stated on the data sheet.