Driven by demand
The use of siphonic roof drainage technology in buildings with large or complex roofs, enables you to achieve more. Today, whether a consultant or installer, you need roof drainage solutions capable of responding to the commercial challenges faced by your clients' and end users' businesses.
The drive for more:
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Space End users gain more useable space inside the building because the number of down pipes is minimised and the horizontal (collection) pipes can be installed close to the roof - without gradient. |
Freedom of design Architects can create extreme building and roof shapes due to the negative pressure in siphonic systems, allowing the routing of pipe work to be fully flexible. |
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Cost efficiency Material and installation costs are reduced through smaller pipe diameters, low weight, fewer down pipes and roof outlets, and less groundwork. |
Safety In cases of heavy rainfall the roof remains safe because the self-cleaning system works with less water depth on the roof, which can be equiped with emergency overflows. |
The challenge of commercial demands and facts
These particular challenges can only be overcome by a specialist drainage solution. Akatherm helps you meet these demands with confidence.
Akatherm offers more than just a siphonic roof drainage system. Like every specialist drainage solution from Akatherm, it comes with a comprehensive level of support.
All our systems are backed by dedicated software, full training and unique products, plus the service standards you would expect from high performance drainage experts and the worldwide backing of the Aliaxis group.





The world's largest unsupported roof span, Boeing's 777 factory at Everett, WA., covers a total area of over 370,000 m2. For obvious reasons there are no roof supports anywhere in the interior. Instead, the entire roof is supported on a truss that sits on the four outer walls.
During an average northern European rainstorm, a 20,000 m2 flat roof collects 36,000 liters of rainwater per minute.