LOROFLEX Flat roof penetration

With sliding flange for flexible pipe passage

LOROFLEX flat roof penetrations are based on a sliding flange design for flexible passage of the penetration pipe for the ventilation of internal rainwater and wastewater downpipes or as cable penetration. With special connectors, they can also be combined as a safe penetration for wastewater pipes made of other materials.

Through the use of composite pipes made of hot-dip galvanised steel and stainless steel, LOROFLEX flat roof penetrations are corrosion-resistant and break-proof. Material problems due to heat, cold or UV radiation do not occur. For aggressive media or gases, the inner pipe can also be made of stainless steel on request.

With their safe and universal clamping flanges, LOROFLEX flat roof penetrations are suitable for roof waterproofing made of bitumen and plastic. For plastic waterproofing membranes, the use of compression seals is recommended to protect the membrane (see below).

LOROFLEX flat roof penetrations can be used with insulated (2-part) and non-insulated roofs (1-part).

Note: Not suitable for wall penetrations.

Alternative pipe penetrations without sliding flange can be found here.

Application examples

LOROFLEX 1-part

For cold roofs with waterproofing membrane without thermal insulation and inverted roofs

LOROFLEX Flat roof penetrations, one-piece

DN 70 DN 100 DN 125 DN 150
21820.070X 21820.100X 21820.125X 21820.150X

LOROFLEX 2-part

For warm roofs with waterproofing membrane, vapour barrier and insulation

LOROFLEX Flat roof penetrations, two-piece

DN 70 DN 100 DN 125 DN 150
21821.070X 21821.100X 21821.125X 21821.150X

LOROFLEX Compression seals

Please note: Always order compression seals one nominal diameter larger than the LOROFLEX flat roof penetration, as they are pushed over the outer pipe, while the nominal diameter specification of the LOROFLEX refers to the media-carrying inner pipe!

LOROFLEX Compression seals for sliding flange
LOROFLEX DN 70 DN 100 DN 125 DN 150
Outer pipe
DN 100 DN 125 DN 150 DN 200
21804.100X 21804.125X 21804.150X 21804.200X