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: This depends on the number of outlets connected and their flowrates. In most cases 500 – 600mm from the bottom of the gutter to the underside of the siphonic header pipe is sufficient. If only one outlet is connected per downpipe, the shallowest connection is 150mm from gutter to the underside of the pipe. If your requirements are outside these measurements please contact our office for information.

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

Office Locations || Perth || Melbourne