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CA River-Therm® secret fix roof is a complete engineered built-up roof system using CA RT-500 profile, suitable for very long roof spans. The profile features a geometric interlocking sidelap with unique incorporated drainage channel, making the roof sheet virtually impenetrable by water, and even capable of withstanding being completely flooded. The roof system is fully walkable, non-fragile, eliminates external sheet end-laps and is available in a wide range of colours utilising Tata Steel HPS200 Ultra® or PVDF-coated Aluminium.
Rooflights can be incorporated in either in-plane or barrel-vault designs allowing natural daylighting strategies to be included in large building spans.
Installation of the RT-500 external sheet may require site rolling due to long sheet lengths. This can be achieved either on site at ground level or the manufacturing unit lifted to eaves to manufacture the roof sheet directly onto the roof.
CA River-Therm® is suitable for roof pitches as low as 2.5⁰ design (1.0⁰ after settlement and deflection) pitch as standard, or where in-plane rooflights are required 4.0⁰ design (2.5⁰ after settlement and deflection) - making the system ideal for ‘flat’ roofing design projects.
Our in-house team of construction experts are on hand to help with CA Group product information and any aspect of design, specification, application and performance-related queries you may have.
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