grout gap/ porcelain tolerances

[dancn]

surface is laser leveled,semi dry laid, (with retarder) sand/cement screed, power floated, with glass fibres added during the mix.
I don't know how my technique sounds but in the past with regular floor cermaics I found laying the first 4 tiles is critical. I'd imagine porc would be easy to chip

 

[charlie1]

surface is laser leveled,semi dry laid, (with retarder) sand/cement screed, power floated, with glass fibres added during the mix.
I don't know how my technique sounds but in the past with regular floor cermaics I found laying the first 4 tiles is critical. I'd imagine porc would be easy to chip

Whenever im doing polished porcelain floor I mix only enough adhesive to do 1 or 2 tiles, the first tile you lay is very important as it not only dictates your lines but also the plane of the floor. I let this first tile set fully then I carry on. Yep, these tiles do chip very easily until grouted due to there weak edge. I don't know how experienced you are but going any less than a 3 mm joint over 50m floor would be a stress but I wish you luck!

 

[WetSaw]

First of all can I just say that I'm not a tiler and I live in Spain so things are a bit different here...
I do all of the maintenance on this housewww.mijasluxuryvilla.com As you can see it has polished porcs throughout. Gaps are much less than 3mm. Seems to be common here to lay them with minimum grout gaps.
One of the many levelling systems available may also help you, although they do seem to divide opinions amongst the professionals.




http://m.youtube.com/watch?v=OWtILNc5qVc#