Siphonic Roof Drainage Association

Developed by two engineers in finland siphonic roof drainage made its first appearance in europe in 1968.

Siphonic roof drainage association.

Adequate difference in height of at least four metres between the roof and the buried drains. The srda promotes a wider understanding of the principles of siphonic drainage encourages best practice by suppliers and installers and provides a recognised platform for specifiers. The water is sucked or siphoned from the roof down into the drain at high velocity. Unlike traditional roof drainage systems a siphonic system is designed to operate with the piping completely charged with water during a rainstorm.

Materials the majority of siphonic drainage systems in the uk use high density polyethylene hdpe pipework. Siphonic drainage systems can be used to drain a roof if the following criteria are met. By contrast a fully engineered siphonic roof drainage system contains an anti vortex plate that acts as a baffle and prevents air and debris from entering the piping system at full flow allowing the pipes to completely fill up with water. Siphonic roof drainage association how it works.

The srda promotes a wider understanding of the principles of siphonic drainage encourages best practice by suppliers and installers and provides a recognised platform for specifiers. Siphonic roof drainage association home.