S.o.s. [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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01-22-2003, 07:56 PM
I recently installed a one piece fiberglass shower unit. I leveled and shimmed it. My old man tiled the floor and he accidently either removed a shim or knocked it in under the unit while tile or grouting the floor. Now, there is about 1/16 inch flex at the threshold of the shower base. what can I do to resolve the problem other than removing floor tile, reshimming and regrouting.

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Bud Cline
01-22-2003, 08:37 PM
"Your old man"?:(

Can you get some spray foam in there somewhere?

01-22-2003, 08:50 PM
I was told that spray/expanding foam is not a good solution because it will compress under heavy weight and will deteriorate over time.

01-22-2003, 09:06 PM
hey johnjohn....is the space between the tile and the unit grouted?...sounds like it was just done. R.J.

01-22-2003, 09:19 PM
Rj, yes, it was grouted. That was what tipped me off since the grout that butts up to the shower base is cracked. The tile and grout between the tiles are solid.

01-22-2003, 10:01 PM
I'll tell you what I would do....but hang in there you will get more opinions here..
If you are sure the base is moving up and down ? if you are,
I'd saw out the grout between the tile and base and then use a grout bag or a margin trowel to fill the space under the base with thinset, let it set up, then regrout.....but then again 1/16" movement ?

'Course you could just caulk over it all too......
but John wouldn't hear of it 'round dees parts....:D

John Bridge
01-23-2003, 07:29 AM
Well, the joint between tile and a plastic shower base is one of the few that I recommend caulking. :) RJ has a good idea about getting thin set under the edge of the the shower, though.

01-23-2003, 07:41 AM
Yea, ya gotta calk plastic, everyone knows that, even John ;)

How about a sliver of tile thinsetted in underneath??