Modified bitumen

TOPWET extension with an integrated sleeve of modified bitumen for vertical TOPWET terrace outlets of DN 70, 100 and 125, with a sealing ring.
Extension is without leaf guard, with extension pipe.

Height above insulation level
TWTN v300 BIT 20-300 mm Drawing documentation



We offer a complete range of products for flat roof drainage systems, TOPSAFE fall protection systems and many other accessories.


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