grout line size for marble floor?

[pb21]

Hi have bought some marble floor tiles to go in a basement. The floor consists of concrete with delta ms 20 damp proof membrane and then t&g 22mm chipboard. (could not screw this down to avoid damage to membrane).

the marble adhesive says it is flexible. My wife says that in spain the grout line is minimal ie to the point that the tiles touch. As this is my first time so to speak should i have a grout line or not? The floor has some small dips but generally is level.

regards

 

[Moz]

pb21
WHAT A NIGHTMARE substrate ..lol

best plan of attack is ripping up t&g 22mm chipboard an getting a leveling compound down an tile too that , Oh Yes ...

Wife is right you can butt joint them but I have seen very nice 1mm or 2mm grout lines

 

[Jasonb]

The type of joint she has seen is called "grind in place" the tiles are laid with minimal joints then reground and polished in situe. Its not a DIY job but if you want it done you will be looking at £300-400 per sq mtr

I would also rip up the chipboard, but BAL do have a recommended method for tiling floating chipboard floors but it may not be upto natural stones needs.

Jason

 

[Moz]

"grind in place" = butt jointed ...then polished,...


with reclaimed marble
natural stones , its a level strong No movement base.......


awful , nasty job , can picture it before