Wet or Water based underfloor heating systems come in many permutations, there are various different pipe sizes and thicknesses and many different ways of installation depending on level of insulation needed and depth available.
 
Low profile systems generally start from around 20mm in thickness with a water pipe of around 16mm. Overfit board Panels can be laid directly on an existing floor, avoiding the need to lift the current tongued & grooved chipboard or timber floor finish in order to gain access to the joists beneath. However, the final floor level should be carefully considered when using this system.
 
Why not contact us to discuss your requirements. 0.75m² per board 20mm thick for 16mm Pipe.