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Unread 07-27-2021, 10:17 AM   #11
TPay
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Join Date: Jul 2021
Posts: 7
Thanks. Yes, the builders probably constructed to code, but I wouldn't rule anything out. As I've thought about it, placing tile over wood seems strange. The longest joints look solid from below, as there are only two instances of single joists over the longest span. On one side of these are three joists side by side, and on the other side, two joists side by side. At the bottom of the stairs where the joists are short, the tiles are loose. This is clearly a high traffic area. I don't see any obvious signs of the plywood having lifted from the joists in a way that would account for the unevenness of the floor, but clearly something isn't working. I hear some creaking of the floor in one area, but I won't be able to fully detect wood movement until I have more of the tiles up, since the grinding of the tiles themselves makes too much noise.
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Last edited by TPay; 07-27-2021 at 12:45 PM. Reason: made a significant error
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