EPDM Internal Drain
Internal Drain Water Outlet with leaf grate available in 3 sizes 68mm, 100mm. 110mm
Used For: EPDM drain outlets are used to join a rainwater down pipe to the EPDM membrane where the drain runs through the roof deck.
1) Cut the drain flange down to leave a 25-35mm flange.
2) Cut the appropriate sized hole in the roof membrane. (68mm 100mm 110mm).
3) Insert the drain ensuring a positive fit inside the down pipe.
3) Fix to decking by screwing through the flange into the roof deck using 3 wood screws.
4) Prime the Internal Drain and surrounding roof membrane with rubber primer.
5) Cut a piece of 9" Uncured Flashing to place over the internal drain ensuring at least 60mm extra on all sides is bonded to roof membrane
6) Adhere flashing to drain and membrane using seam roller once the primer is touch dry.
7) Cut a hole in the flashing making sure not to cut internal drain
8) Insert leaf guard.
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EPDM Rubber roofs have a 50 year life expectancy.
EPDM has been in commercial use since the 1960s. And many of those roofs are still around today.
Yes, EPDM Membranes require the substrate to be dry prior to installation. This is so the the adhesive & primers can effectively bond the rubber to roof deck. EPDM products will not adhere to wet or damp surfaces. Trapped moisture may vaporize and negatively affect the performance of the membranes.
Yes, ClassicBond membrane holds the British Board of Agrément certificate, No. 11/4853 (issued to Flex-R Ltd). It also holds fire ratings for each of the thicknesses available.
We recommentd a minimum tempereture of 5 degrees C for EPDM installation. This is due the the WBA adhesive being water based and lower temperetures may cause the adhesive to freeze over and fail.