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Tiling

Should i use Latex or PVC before tiling?

Anonymous user 09/03/2024 - 2.39 PM

Hi, my builder just completed my kitchen floor about 40 square meter with underfloor heating and now screened. I have had 3 tilers come in each with different opinions…how do i know what to do. The tiles are Porcelain. 1) the first tiler said that the screed was not level and he was not interested 2) the second tiler said that i needed to have latex done first which would level my floor and would cost me 500 then he would come back and tile 3) the third said that latex is not needed and that he would use PVC to coat the cement and lock the dust then use adhesive to fill the gaps then tile How do i now if i should use latex or if PVC is sufficient as i don't want to make any mistakes and want to be sure my underfloor heating works correctly after tiled - i've been told not to use it till couple weeks after tiled. 80% of the floor has underfloor heating the other 20% is without. All is newly cemented. I understand that the floor - at the points where it is not level - the variance is not more than 3mm.

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4 Answers

Anonymous user

If the floor is level...which it should be if its been screeded properly...and it is dry (guidelines suggest 1 day drying time for each millimetre of screed depth...i.e.75 days drying time for 75mm of screed) its fine to tile. If the floor is not level, then, as the first tiler suggested, a latex leveller will need to be applied. If its a new screed that hasn't yet fully dried as per guidelines it is possible to apply a de-coupling membrane such as Ditra Matting before tiling...though again, the floor does need to be relatively level. I hope this helps. Regards, Simon

Answered23 May 2016

Taunton Tiling

Rating: 5 out of 5

Taunton

i would do that latex to level the floor, then underfloor heating,best way to practice, thanks

Answered7 June 2016

Aintree Ceramics

Rating: 4.3 out of 5

Liverpool

Yes if the floor is level & dry it can be primed then tiled( PVA ) but an un coupling mat is a good idea. If it is not level it is best to use a self leveling compound. This will give good results to the tiling. Ask who ever is tiling to use tile leveling clips, these prevent any lipage to give a perfect finish. See my pics. Good luck hope I helped. Regards Stuart.

Answered25 May 2016

Anonymous user

A PVA should NOT be used.... pva is a skin to lock in dust.....( all you will tile on is a skin which could bake yountiles lift if moisture get underneath ( rises up ). if you want to lock in dust you need to use an acrylic primer this penetrates the substrate/floor/ walls so in effect you tile onto the floor/walls not just a skin. Also yes you could use another latex for under floor heating. You could also use a PTB adhesive for large format tiles which allows as much as 1" nearly in adhesive to be used under the tile which will raise the floor in the lower places for tiling. Hope this helps.

Answered10 March 2017