OSB + Plywood = solid base for tiling?
HD Canada probably has Custom Blend and Premium Plus. Custom Blend, although meets min. specs, is not considered a quality unmodified. I think it's one notch above dirt, but HD wants a $6 bag of mortar. Custom Building Products Canada still makes Premium Plus which is a very decent unmodified mortar. (It's not available in the USA).
Lowes may carry Mapei or Laticrete brands. You tell me.
Not sure about the reference of the 1/16" & ply. If it's t&g and for some reason one side is 1/16" higher, it needs to be fixed. 1/32" is the max variation for ply differences.
Tile 4 You LLC Troy, MI
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