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I think I messed up. I laid 12″ ceramic tiles directly on my 3/4 inch plywood subfloor; the joists are 16″o/c. It’s a high traffic area but the only furniture that’s on the floor (or likely ever will be) is two barstools. So far, a year later, it hasn’t buckled but I’m wondering if I ought to access the subfloor from the basement (it’s an open ceiling) and screw some additional plywood sheets to the floor from below, between the joists. will this help prevent sagging in the future? is it necessary?
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Replies
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I would just leave it alone until it needs fixing. I don't know if the additional plywood would help.
I did the same thing in my cabin five years ago and I only have one cracked tile .
Dave
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I think I messed up. I laid 12" ceramic tiles directly on my 3/4 inch plywood subfloor; the joists are 16"o/c. It's a high traffic area but the only furniture that's on the floor (or likely ever will be) is two barstools. So far, a year later, it hasn't buckled but I'm wondering if I ought to access the subfloor from the basement (it's an open ceiling) and screw some additional plywood sheets to the floor from below, between the joists. will this help prevent sagging in the future? is it necessary?