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Country Discussion Topics
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A little off the subject, but help fix my bathtub
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ajo    Posted 05-09-2003 at 12:02:17       [Reply]  [Send Email]
I need a little help with a bathtub problem. When the plumber installed it (regular steel tub) he didn't brace or support it well enough underneath. Now the caulk that is between the tub rim and the tub surround wall will not stay stuck. When we stand in it, the weight on the bottom of the tub pulls the caulk away from the wall pieces. I don't know how much water has gotten behind there, but I need to get it fixed before it gets worse. I've tried the best caulk I know of. I've tried putting weight in the tub while caulking. Nothing is working. Any suggestions? Thanks!

MikeC    Posted 05-10-2003 at 05:10:06       [Reply]  [Send Email]
If the contractor can't/won't make it right then the only option is to put additional support under the tub. When I did our bathrooms I formed up the bases and filled it with sand for support. The sand molds itself to the bottom of the tub and provides excellent support.

Hal/WA    Posted 05-09-2003 at 20:30:09       [Reply]  [No Email]
If it is possible to open a hole through the wall from an adjacent room, you might be able to see what is going on under the tub. The hole also might allow you to shove some bracing under the tub. It's probably not the coolest idea, but I would consider spraying several cans of expanding plastic foam under there if there is no good way to use conventional wood blocking.

Another thought is if this work was done recently, maybe you should get in touch with the contractor and convince him to make the work right. You may have consumer protection laws on your side.

ajo    Posted 05-09-2003 at 20:56:28       [Reply]  [Send Email]
Yes, the spray foam idea had crossed our minds. Do you really think it would work? We could spray it through holes in the wall that is against the tub. That would save us alot of sheetrock work that we would have to do if we braced it with wood. But of course, if we take the easy way out, we might have a bigger problem if it doesn't work!!

DeadCarp    Posted 05-09-2003 at 18:54:05       [Reply]  [No Email]
Yup, the support needs to be beefed up. Few people realize it but a filled bathtub can hold over a thousand pounds of water. I think normal floor is designed to support about 40 pounds/square foot of "live load" (that's under half strong enough) so don't just spend lotsa money & start filling a tub or waterbed or something. :)

Burlgoat    Posted 05-09-2003 at 18:49:58       [Reply]  [No Email]
ajo, the plumber should have put a 2x4 lenth wise of the tub under the backside.If he didnot you will have ahard time correcting the problem without pulling the tub and doing so.Ihave installed hundreds of tubs &this is the only way Ihave found to do the job right.

JohnnyB    Posted 05-09-2003 at 16:06:50       [Reply]  [No Email]
Ther is only one way to fix it, you have to get to the underside of the tub and get it supported. You might have to tear out some sheetrock to get to it, but once in there you can use some Quick Crete to support the bottom, then repair the sheetrock.

Ludwig    Posted 05-09-2003 at 13:44:02       [Reply]  [No Email]
Umm, it seems like you've answered your own question. Fix the underlying problem before you try to caulk again. Maybe start with calling the plumber that did the install and complaining about the moving tub.

Yer tub shouldn't move, not much anyway...

toolman    Posted 05-09-2003 at 13:30:02       [Reply]  [No Email]
if the floor isn,t strong enough nothing will help until you support the floor properly, once that is done , always fill the tub with water , before you caulk and take a hair dryer and dry the area to be caulked first , don,t know what kind of floor (basement etc.) you have , good luck.

rhouston    Posted 05-09-2003 at 12:52:24       [Reply]  [No Email]
do you mean the floor joists under the tub flex or is the tub not touching the floor

ajo    Posted 05-09-2003 at 13:26:55       [Reply]  [Send Email]
We have a concrete slab floor, so its the tub thats moving. I don't know if he put any bracing underneath the tub or just too little bracing.

Clipper    Posted 05-09-2003 at 18:56:44       [Reply]  [No Email]
You may want to consider taking the tub out and going with a shower insert...

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