Spaced or Butted Slate Tiles
Question:
Are you supposed to have a wide grout space when laying slate tiles. Someone recommended to have them butted together.
Answer:
This depends on your particular preference, there are no rules when laying slate floor or wall tiles, on average you would use a 5-10mm grout joint.
I suggest that if it is a Chinese slate you use a 10mm grout joint as they have a tendency to not be very square & I would not recommend you butt these slate tiles either, thoroughly check them before going along this path.
If it is a Brazilian slate then you could get away with a 3 or 4mm grout joint as these slate tiles are cut more precisely, but to be honest I think whatever slate tile you use it will be hard to butt them completely as all slate tiles have a +/- from 1-2mm on size.
The best thing to do is have a dry run to see if they look ok before placing them on your adhesive.