Hi, is this product suitable to use as insulation boards for underfloor heating when the floor is then going to be tiled? Does it need to be laid on top of plywood (what thickness is recommended?) or can it go straight on the joists ?


Hello,

Yes, those boards are based on material which provides good insulation, can be used as boards for UFH.

They need to be laid on marine ply, are not strong enough to be installed without underboarding. You can install marine ply in between the joists (on the battens) though to avoid total floor height increase.

I will be happy to assist if you have any questions.

Kind regards

David 020 7193 0953

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