slate mosaic tiles with less than 1mm gap - can't grout

[Dave Ramsden]

If your referring to a moisture membrane the n yes it is fixed down with a flexible adhesive suitable for wet areas. There is plenty of advice on this on the forums if you use the search function

 

[jay]

the tile in question is called stack rock if laid above 3 metres in height you need to use epoxy adh under that you need a c2 adh i wouldnt recomend using in a shower because of moisture getting behind rock due to no grout and that will cause mould and all sorts of probs normally used as feature wall if you do lay in shower area use a good membraine hope this helps

 

[Fraser]

havent read every reply, but mapei do keracolour ff, a fine grout that will do a 1mm joint

 

[The Legend; Phil Hobson RIP]

Hi, not the same slate, but tight joints. I grouted this in Norcross grey, once sealed it was fine

 

[DJS]

Thanks for letting us know what the manufacturers said. So they do rely on a WP tanking membrane for a wet area. The homelux matting is tanking/waterproof membrane that also just happens to be supplied by TOPPS, so I think you could follow any of the previous advice about tanking products. I think as the manufacturer sell tiles to topps, they are just referring your back to them for another sale.

As I used these tiles before, I think grouting might detract from the overall sleek look they give, as they are uncalibrated and almost butted up to each other. I recall the sharp corners will pretty much rip your sponge to bits anyway, so grouting would be very difficult to clean up.

That said I still agree with Jay about the possibility of mould so as you decided to go ahead with it, then be prepared and try to keep them well maintained. If you do get problems in the future, my advice would be to treat it chemically, and then try some fine grout. Otherwise you'll be looking at removing and replacing them. And as they are slate tiles, I would give them at least 1 coat of sealer before you fix them too.

Good Luck with it, a pic is always nice no matter how long it takes

 

[Shoggers]

I have the exact same predicament
Just laid some nice 40x40 slate tiles on the floor in a long thin bathroom. I wanted to use these tiles on the end feature wall where the shower is located, but having read all these comments I'm not sure now.
I have seen similar looking ones but porcelain/ceramic and they dont quite have the quality finish im looking for.
Please let us all know what you decide with this and I think I will hold off buying them for a while.