That is floor level, not a stair, right? I think you're good to go. The worst thing that could happen is the grout cracks or a tile pops up. The tiles themselves shouldn't crack unless they are el cheapo. If the grout cracks or a tile pops up use silicone-based sanded grout to fix it up. It is pretty easy to work with. It is what is recommended in showers and baths for in the corners and between the tub and the tile. It works well and comes in the same array of colors as the grout is. Made to match (although the match isn't perfect).
Mapei is the brand I'm used to working with. Now that I read the manufacturer website it is actually acrylic-based caulking, not silicone.
Quote:
Originally Posted by sphelps
Myka, I believe subfloors are required to be 1.25" thick for tile, typical subfloors are 3/4" so when tile is to be set builders lay an extra sheet of 1/2" on top.
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Maybe I'm not remembering properly, but I thought standard subflooring is 5/8"? Then builders add 1/2" for tile which technically makes 1 1/8", but most just call it 1". It's been awhile since I was in the industry.