Good afternoon. 

 

We're trying to work out how much build up we should allow when laying 10mm porcelain tiles on top of a new liquid screed floor (Cemfloor). Would a self leveling compound be required or any matting? Any advice greatly appreciated.

 

Thanks

 

 

Cemfloor should be fairly flat.  I have just had one poured and apart from a few surface imperfections, which will scrape off easily, it is very flat, so you could not slide a piece of paper anywhere under a 6' level.

Straight on, once it's fully dried.

Our Cemfloor was bob-on level, could have been tiled onto directly. Our tiler at the time insisted on a mat, I think because that's what he knew. I'm not convinced it needed one. 

The thickness of your tiles x2 No matting needed 

5 hours ago, Mr Punter said:

Cemfloor should be fairly flat.  I have just had one poured and apart from a few surface imperfections, which will scrape off easily, it is very flat, so you could not slide a piece of paper anywhere under a 6' level.

You were lucky I could have slid a 6’ level under a 6’ level on mine. It’s tiled now and nearly forgotten. 

Thank you all, much appreciated

5 hours ago, nod said:

The thickness of your tiles x2 No matting needed 

Sorry just spotted the "x2", what to you mean? Thanks

8 hours ago, lpear said:

Sorry just spotted the "x2", what to you mean? Thanks

If you are using a ten mil tile You use a ten mil notched trowel 

The thickness of your tile dictates the thickness of your adhesive 

So in your case allow 20 mil buildup 

Others tiling into timber or traditional screed would also allow for a decoupling Matt 5-6 mil 

all i would say is check carefully  all over the floor with a 6ft level before making any decision