About Us

The Siphonic Roof Drainage Association (SRDA) was set up in 2004 to promote a wider understanding of the principles of siphonic drainage, to promote good practice among siphonic companies, and to provide a recognised platform for specifiers. 

Members have to comply with the following requirements to gain membership:

	A suitable siphonic outlet.
	A pipe and bracket system capable of accepting the dynamic loading from siphonic flow
	Design software capable of accurately assessing the very complex flow regime in the system.
	Not use misleading advertising, which makes false claims about benefits of a particular product, or denigrates another.

All the requirements must have been assessed as suitable by a third party organisation.

All members are subjected to an annual random check by the Association to confirm that their design and installion procedures are being properly implemented. This helps to ensure that standards are maintained, and that there is a thorough understanding of the important factors throughout the company structure.

By using a member of the SRDA, a specifier can ensure that they are going to a company which has the tools and experience to do the job properly.

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