Takes away any fear of heavy rainfall.

Geberit roof drainage systems.

Safe drainage of large roof areas
The drainage of large roof areas is becoming an ever more important task in modern residential, industrial, commercial and high-rise construction and is in many countries subject to national regulations and standards. Frequently occurring heavy rainfalls result in increasing requirements with respect to the planning and implementation of waste and drainage systems, in order that even large quantities of water can be drained off safely.

Economical system with very high discharge rate
With the Geberit Pluvia negative pressure roof outlet and the robust and versatile HDPE discharge pipes, economical complete systems for rainwater drainage can be implemented with Geberit which safely drain off large quantities of water. They are hydraulically optimised in such a way that the discharge rate is practically double that of conventional systems with the same pipe dimension. Geberit emergency overflows provide additional safety for extreme weather conditions.

Simple planning with Geberit ProPlanner
The Geberit ProPlanner software is suitable for planning roof drainage systems. Geberit also offers the calculation as a service.


Double the amount of rainwater discharge at half the pipe diameter
Geberit has been setting standards for roof drainage for decades with the Geberit Pluvia syphonic roof drainage system. Unlike conventional roof drainage methods, the Geberit Pluvia roof drainage system functions as a syphonic system. The pipeline system fills up completely as rapidly as possible, thanks to the correct pipeline dimensioning and arrangement of the Geberit Pluvia roof outlets, thus generating a negative pressure in the pipeline. This negative pressure in the pipe rapidly withdraws the rainwater by suction, instead of merely allowing it to drain away, and also ensures an improved self-cleaning function.

More freedom of design, more economic efficiency
Geberit Pluvia offers architects more freedom of design, as they require a smaller number of roof outlets, discharge stacks and underground pipes and need no longer include any slopes for the feed pipes leading to the discharge stack in their planning. Geberit also offers the Geberit ProPlanner calculation program as a service for the calculation of roof drainage systems.


Resistant to high temperatures and aggressive media
Manufactured using high density polyethylene (PE-HD), the robust piping material, Geberit HDPE discharge pipes are appropriate for a multitude of application ranges in roof drainage systems, in industry, in commercial or laboratory facilities, for placement in the ground, in concrete or in bridge construction. Hot water does not affect the material at temperatures of up to 80 °C – or even up to 100 °C for short periods and without mechanical load. It is resistant against around 95% of all commercially available alkalis, acids and chemicals. The Geberit pipes and Geberit fittings also withstand shocks, drops, impacts or pressures of up to 150 kPa without breakage or permanent deformation.

Geberit HDPE – connections with long-term stability
Geberit HDPE pipes are available in dimensions ranging from 30 mm to 300 mm and in a wide assortment of fittings which are connected using butt welding, electrofusion welding, screw connections or flanges.



Additional information:

More about installation and configuration