The system with negative pressure

Geberit Pluvia roof drainage

Fewer pipelines, more performance
Geberit has been defining standards for roof drainage for decades with the Geberit Pluvia siphonic roof drainage system.

Geberit Pluvia offers:

  • fewer roof outlets due to high discharge rate
  • increased flexibility when planning due to fewer down-pipes
  • horizontal pipelines maximise the use of building space

Sophisticated details, high-quality system components and Geberit as your partner ensuring a reliable safe, durable and smooth operation.

The right technology ensures a better result
Roof drainage with negative pressure


New with Pluvia

Better handling

  • 12 and 25 l/s outlets now based on common design platform to simplify range and installation procedures.
  • Compared to their predecessors the new Pluvia outlets (up to 25 l/s) offer a more compact construction with an ergonomic design.
  • Sealing with new rotating lock bars for easy installation and maintenance
  • Extra-long Geberit HDPE straight connectors for increased insulation thickness

Easier planning and calculation

  • Geberit ProPlanner software with plug-in for Autodesk® Revit® for hydraulic calculations for our approved Pluvia installers
  • Complete BIM data available

The right solution for a wide range of roof structures

Concrete roof with bitumen as a water-bearing level

Example 1: For concrete roofs with bitumen roof foil, Geberit Pluvia provides an extra-large contact sheet for improved connection.


Warm roof with vapour barrier connection and roof foil as a water-bearing level

Example 2: Lightweight roofs benefit from the low static load thanks to Geberit Pluvia. The long connection pipe overcomes even high insulation thicknesses.


Geberit Pluvia flanged in the gutters

Example 3: Geberit Pluvia is also suitable for installation in gutters thanks to its compact design.


Geberit Pluvia with set installed suitable for weight-bearing

Example 4: In the case of weight-bearing concrete roofs with bitumen roof foil, Geberit Pluvia can be adapted to the height with a supplementary set.


Geberit Pluvia fastening system

The Geberit Pluvia fastening system

  • Fastening points only required on the building structure every 2.5 metres
  • Can be installed easily using a hammer thanks to the universal tension wedges
  • Fastening with electrofusion tape enables anchor points to be determined subsequently
  • Ideal for lightweight roofs since there are only weak forces acting on the building structure


The tried-and-tested, easy-to-install Geberit PE pipes made of HDPE are connections with long-term durability for safe roof drainage.