9No UFH (6.48m2) CEMENTITOUS GROOVED OVERLAY XPS BOARD FOR 12MM UNDERFLOOR PIPE

8 full UFH boards. Also see my other advert for 20mm UFH boards. ® 18 Underfloor Heating System Overview. ® 18 system really does give the best of both worlds – it provides a low-profile underfloor heating system, which incorporates an insulation layer and can be tiled directly onto.

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