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Internal Drain (68mm 100mm 110mm)

Internal Drain Water Outlet with leaf grate available in 3 sizes 68mm, 100mm. 110mm 

£19.55 Excl. VAT £23.46 Incl. VAT
£19.55 £23.46

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Compatible with ClassicBond

The ClassicBond One Piece EPDM system is great for large or small flat roof areas and is normally bonded on to a timber deck in one piece so no joins! Find out more

Compatible with DuoPly

DuoPly Fleece Reinforced EPDM is a high performance, reduced shrinkage system, ideal for large overlay roofs where with rapid installation times. Find out more

Availability: In stock



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.

Size: Fits Standard Domestic Downpipe, 100mm Downpipe and 110 Downpipe. 

Installation Notes: 
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.

Additional Information

SKU CB-Drain-Int
Brand Name Rubber4Roofs
Roofing System Classic Bond, DuoPly
Material No
Color Black/Grey
Size No
Coverage No
Delivery Lead Time 1 Working Day