Calda Joist is our most effective system that is suitable for a joisted floor build up. 

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It consists of a 75mm layer of insulation installed on top of battens, clipped to the joists. 16MM underfloor heating pipe is then laid on top of the insulation. A 20MM layer of sand is then spread on top of the pipe work. 

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The benefit of this system is that you can achieve a heat output, similar to that of a screeded build up on your renovation or new build project. 

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Calda Joist is a specialist system for suspended timber floor build ups, please contact us directly for a bespoke quote. 

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