Ok.. what i mean is this. Let‘s say you have hard tile beside the toliet and water damaged occured. Once you press down on the tile you can actually feel the weakness in the tile.. Does this automatically determine bad subflooring or is it possible just bad tile, Can I just killz over the subflooring repaint and lay new tile?
Justin, tile is rigid and doesn't flex. If you can feel it move, what's under it ain't gettin' it. Sure, the subfloor is suspect, but it may also be missing proper tile underlayment, like concrete board on top of the basic underlayment. If the tile was just installed directly onto a wood subfloor, big fail. Properly installed, it should feel like it's on a concrete slab.
Does the tile wobble? It could mean the adhesive under the tile has deteriorated because of water leaks. Can you get under the floor and look up?
