kurt Posted April 28, 2012 Report Share Posted April 28, 2012 Sometimes yes, sometimes no. Big fat joints (3/16") will inevitably open up; how much is unknown, but it's usually 1/32-1/16. Or not. Depends. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted April 28, 2012 Author Report Share Posted April 28, 2012 Maybe I'll pack the flexible caulk deep in the corner joints and face the joint with the cement based to get the perfect color match. If the cement opens up, the caulk will be there underneath. I think I just need to save enough room for the cement so that is has a decent thickness which can support itself. Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted April 28, 2012 Report Share Posted April 28, 2012 I grout the corners. The caulk gets all yucky. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted April 28, 2012 Report Share Posted April 28, 2012 I second that, grout the corners. It won't hurt to try and it looks better than caulk with no maintenance. I grouted my floor tiles to the tub about four years ago and that seam is still tight. Good quality grout. You can try caulking with colored silicone if it opens up. Quote Link to comment Share on other sites More sharing options...
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