Roof - Flat Roof - Steel Framed - Input Required  help

Screed thickness


Concrete deck thickness


Suspended ceiling


The solution above will allow for a 50mm cavity (vented) within ceiling void/plenum.

Insulation above ceiling 

You can either select an insulation or enter the
target U-value you want to achieve below...

Internal Finish/Insulation  

or Target U-value  W/m²k

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Calculate U‑value


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