125mm FarBo® DuoDrain - felt flange

125mm FarBo® DuoDrain - felt flange

Two-part drain for applications where the drain needs to be sealed at VCL level, to suit roofs with a bituminous membrane.

Delivery: 1 day
Product code
Your price
£301.50 (ex. vat)
FO-DUO-SBS-125/SBS is available to buy in increments of 1


The DuoDrain is a specialist rainwater outlet that can provide a seal both at the VCL and rooftop level. The SBS'  version features a bituminous membrane flange at VCL level with a variety of membranes at rooftop level. 


  • Two part outlet, one to seal at VCL level, and the second which fits into the first once the rooftop membrane has been installed
  • Factory-bonded membrane at rooftop level for quick and easy installation
  • Suitable for use in both new build and refurbishment applications
  • Both spigots manufactured from durable corrosion resistant stainless steel
  • Spigot Diameter (mm) 125
  • Membrane attachment type Bituminous
  • To suit pipe diameter (mm) 135-143
  • Membrane attachment size (mm) 500 x 500