New_Engine_7237 t1_ja1afy9 wrote
Reply to comment by Scav54 in Tiling over concrete expansion joint by Scav54
Even if your tile comes on the mesh backing? Doesn’t look like individual tiles.
zedsmith t1_ja35574 wrote
Both ditra and kerdi board require at least a 2x2 tile to get the warranty from schluter. Both substrates aren’t stiff enough to resist the point load that could result from weight on small tiles.
When you get bigger tiles, the tiles themselves, and the thicker thinset bed, make for a stiffer assembly.
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