Underheating cable was buried in 50mm screed but the surface is not level, some kind of floor leveller is needed, 15mm variation in some places.
on top of the floor leveller I intend to use ceramic tiles with flexable adhesive.
But will the floor levelling compound (b%26amp;q of febfloor) be likely to crack ??Will floor levelling compound (b%26amp;q value/Febfloor) be ok below flexible adhesive wth underfloor heating cable?
Try logging onto FLOORING FORUM HELP WITH SCREEDING then click into technical and installation help.Hope this helps ya good luck.Will floor levelling compound (b%26amp;q value/Febfloor) be ok below flexible adhesive wth underfloor heating cable?
yes its fine but pva the old floor first or it will not stick
all you need is a tub of pva ..dilute it 50..50 with water ..a bag of cement .and a bag of SHARP sand ..this is the type of sand we use in the building trade to Lay a floor screed ..it does not crack or shrink..and cheaper and better than self levelling
levelling compound usually only goes to about 3 -4mm, if you add granite chippings to the mix you can double that depth. Try a large tiling suppliers for further advice, and they will probably be cheaper than b%26amp;q. some concern about the heating, if its a wet system buried in the screed fair enough, however an electric mat system is usually set into the tile adhesive!
Hope this helps.
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