TilingLogistics

The problem with slate or any natural stone for that matter is when you are trying to intensify the colour the product will only accept so much penetrating sealer. When that point is reached you can apply another gallon of the stuff if you want and it will make no difference except to make the surface messier. As for 1-2mm Grout gaps I have never seen this tight a gap with slate but thats not to say it hasn't been done. The substrate you are laying onto will have to be rigid though som I hope its not wood or floorboards with those tolerances. £mm is minimum BS by the way.

Kev

Specialists in Grinding, Honing, Polishing, Restoration, Sealing and Deep Cleaning of Marble, Granite, Limestone, Slate & all Natural Stone. Domestic/Commercial.West Mids/Nationwide Tel: 07770 598855
e mail: tilinglogistics@hotmail.com