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  2. FAQ'S for stone

common questions about slate

What sizes are available for slate tiles?

3"x6”x ⅜” subway; straight rectified

4" x 12"x ⅜” plank; straight rectified

6” x 24” x ⅜” large plank; straight rectified

12" x 24"x ⅜’ large field tile; straight rectified

12"x12"x ⅜” square; straight rectified

16"x16"x ⅜” square; straight rectified


Where can I use slate tiles?

Backsplashes, bathrooms, fireplace exteriors, floors, exteriors (only if sealed above and below), kitchens, showers and walls.


Can I use slate in the shower?

Yes, specific waterproofing precautions need to be taken, such as using a waterproof membrane under the tile and use of a penetrating sealer like Miracle 511 Porous plus. Penetrating sealers should be reapplied yearly.

Can I use slate in the pool?



What grout should I use?

clé recommends the use of Mapei Flexcolor CQ.  


Do you offer trim?

We do not offer trim for our slate tiles. Slate is a natural stone and therefore only requires a “honing” of the cut surface with a sander to finish the edge.

How do I clean slate?

Slate is chemically sensitive so only mild pH neutral cleaners should be used. Soapless cleaners are preferred because they minimize streaks and film. Mild, phosphate-free, biodegradable liquid dishwashing soaps or powders or stone soaps are acceptable if rinsing is thorough.

Showers and Baths: Soap scum can be minimized by using a squeegee after each use and using liquid as opposed to bar soaps. To remove soap scum, clé recommends the use of Miracle Porcelain & Ceramic Tile Cleaner.


What is shaling?

This is the process of the slate’s cleft surface to slough off during the first several months of floor (and sometimes, wall) use. This will not happen with every tile, just the tiles that have a section of loosened cleft surface. This process will only expose more slate stone underneath. This process is natural and is not a defect of the slate- but a natural response to wear and tear. It will finish once any loose portion of the slate’s cleft has come off.