Our mission statement:
Siphonic drainage was first introduced in the 1960's in Scandinavia and since then has been used widely across Europe, including the UK, in the Far East, Australasia, South Africa and the USA. Many large industrial, commercial and retail buildings are now fitted with siphonic drainage, which has clear advantages over gravity drainage.
SRDA recognises and is committed to the adoption of the Trade Association Forum 'Best Practice Guide 2006' wherever feasible.
“Slower than normal - but we have arrived” was the wry comment from John Purser, Panel Chairman of the group who have completely updated the guidance document for Siphonic Roof Drainage, now British Standard BS8490:2025.
The Standard will be of interest to a far wider group than just siphonic installation contractors. Roofing and cladding designers need it to be aware of correct gutter sizing and civils designers for the specific requirements in the underground drainage. Facilities managers and building owners will need it to make sure regular maintenance is adhered to.