Q: What are the differences between conventional and siphonic drainage systems?
Q: How does the cost of installation of a siphonic system compare to an equivalent “traditional” storm water system?
Q: What are the main benefits? Why use it?
Q: What special considerations are needed in the layout of roof drainage when using a siphonic roof drainage system?
Q: Where do siphonic systems terminate? How is the connection to the soakwell system made?
Q: Can the horizontal piping run uphill or can it offset up and over an obstruction?
Q: Is there any special maintenance required for siphonic drainage systems?

Q: Are secondary (overflow) systems necessary?

Q: What are the typical down pipe sizes?
Q: Is the design of the box gutter incorporating siphonic drainage different to that of a conventional downpipe system?
Q: How much room is required for the siphonic drainage system underneath the (box) gutter?
Q: Is there a minimum roof area required for siphonic drainage?
Q: How far can a siphonic drainage system run horizontally?
Q: Does siphonicroof drainage improve the green star rating of my building?



A: The building code of Australia requires secondary roof drainage systems for any roof with a parapet wall or some other condition that will retain water on the roof if the primary drainage system fails. This code requirement applies specifically to traditional roof drainage design, but also applies to siphonic roof drainage as well. Plumbing code requirements for the design and capacity of secondary roof drainage should be followed.

Contact Us with any enquires at info@siphonic.com.au

Office Locations || Perth || Melbourne