Universal anti-back up drains are one of the best means of connecting roof systems with 68mm rainwater pipes (standard domestic uk size) on flat roofs, gutter, domestic & commercial building. They have a high resistance to uv light, ozone movement and cracking.
Universal anti-back up drains are one of the best means of connecting roof systems with 68mm rainwater pipes (standard domestic uk size) on flat roofs, gutter, domestic & commercial building. They have a high resistance to uv light, ozone movement and cracking.
The stem piece of the unit has two or more circular ribs which face outwards which when forced into the drain pipe prevent backing-up and form a perfect seal. The seal rings are compressed upwards when inserted into the drainpipe and thanks to this pressure fit they guarantee optimal seal within the pipe. The passage of water vapour or backing up of liquids into the roof systems and particularly into the insulation is thus eliminated.
Intended Uses:
Outlet for domestic type roofs with internal drains connecting to 68mm downpipe. The outlet is manufactured with a smooth flange allowing for greater bond strength to the epdm detail than a regular ridge outlet.
Features & benefits:
- Square, smooth flange 285mm x 285mm for adhering membrane and PS tape to.
- 185mm outlet pipe with round flange, which when pushed solidly home into pipe ensures there is no backing up of water between the outlet and the inside of the pipe.
- Internal drain O55mm.
- Leaf/Gravel guard.
The preformed 68mm outlet is a fast, efficient method of connecting ClassicBond flat roofing systems to existing 68mm internal rainwater pipes on domestic and small commercial roofs. Seamed to the membrane with 228mm PS tape and EPDM primer.
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