On Sat, 02 Jun 2007 21:43:28 GMT, Mike E. Fullerton
Use caulk whenever the substrate changes direction (changes plane, not
direction on the same plane) or material changes. So corners, at
fixtures like bathtub or toilet, where a tile backsplash meets tile
countertop, where baseboard cove tile meets floor, where floor tile
meet door threshold, etc. These areas are able and likely to move
relative to each other, so you want the flexibility of caulk.
Do all the grout first, then tape off the areas to be talked, caulk
and smooth, and remove the tape before the caulk sets.
As another poster said, use color matched silicon or urethane, and get
the kind with a mildewcide (usually labeled for kitchen or bath use).
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