Attachment for roof outlets with integrated bitumen sleeve

TOPWET attachment with an integrated flange of modified bitumen for vertical and horizontal TOPWET roof outlets of DN 70, 100 and 125, with a sealing ring, without a leaf guard (XL version only for outlets of DN 150). TWNE = heated performance, suitable for an insulation thickness over 300 mm.

For thermal insulation thickness
TWN v220 BIT 40–220 mm Drawing documentation
TWN v300 BIT 40–300 mm Drawing documentation
TWN v500 BIT 40–500 mm Drawing documentation
TWN v300 BIT XL 120–300 mm Drawing documentation
TWN v500 BIT XL 120–500 mm Drawing documentation
TWNE v300 BIT 100–300 mm Drawing documentation
TWNE v500 BIT 100–500 mm Drawing documentation

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

Follow us on social networks


Haven´t found, what you were looking for?
You may need:



Technical information

Terms and conditions



Personal data processing

Do you need advice?
Contact us.


Customer service:
+420 777 717 116