Rainwater Drainage Roof

Gutters are the most commonly used and most cost effective drainage solution for flat roofs.

Rainwater drainage roof.

The figure of 6sqm comes from earlier guidance in british standards now superseded that stated that roofs having an area of 6sqm or less do not need gutters and downpipes. If you already have gutters be sure to clean them at last once a year so that debris doesn t block them and cause water to back up. When closed the water simply flows through. 33 0 3 83 80 78 08.

Description recommended use. Thanks to the integrated stainless steel grille the rainwater valve also serves as a leaf. Roof drainage products designed in compliance with en 1253 criteria and backed by the quality commitment of the pam brand with nearly 100 years experience in. A rainwater downpipe is a pipe that is used to direct rainwater away from a building typically from roof guttering to a drainage system.

It is sometimes also referred to as a downspout drain spout roof drain pipe or leader. Flat roof drainage falls into 2 main categories gravity drainage and syphonic drainage. To drain water away from your home invest in a gutter system so that rainwater on the roof doesn t leak into your foundation. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor.

Syphonic drainage was developed and first used in scandinavia in the earlier 1970 s and first used in the uk in the 1980 s. Overflow is used for the transition of the rainwater drainage from the flat roof to the down pipe. The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. They catch rainwater as it rolls off the edge of the roof and divert the water into a downspout that dispenses it a safe distance from the foundation of the building.

Which type of rainwater outlet can prove beneficial to the design and performance of roof drainage and ultimately the building. Sizing a roof water drain. This implies without explicitly stating that if your effective roof area is 6sqm or less then you don t need to provide a rainwater drainage system. Rain diverter the rain diverter is placed between downpipes.