How it works

Negative-pressure roof drainage in accordance with DIN EN 12056 and DIN 1986-100

The small pipe with a big effect
Low costs thanks to an effective system


This form of roof drainage takes advantage of the physical phenomenon that narrower tube cross-sections produce a negative pressure and thus deliver greater drainage performance. A specially designed roof inlet prevents air entering and ensures the optimum functioning of the system – so the rainwater is literally sucked from the roof.

The innovative technology provides you with numerousadvantages over conventional systems.
  • Significantly fewer drainage sections and only one downpipe – optimum utilisation of space
  • The horizontal installation of the collecting mains allows flows to be merged directly below the roof surface
  • Almost maintenance-free thanks to self-cleaning effect
  • Requires little underground pipework, reducing the underground engineering and assembly work, as well as the material required
  • Guaranteed compression strenght in the case of backlog
  • Installation in existing buildings without significant business interruptions

You can find detailed information in our 16-page broschure.
This is available as a download or can be delivered to you on request.

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