How Do I Fill Wide Gap Between Tub And Tile...caulk? - General DIY Discussions - DIY Chatroom Home Improvement Forum

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Old 02-25-2005, 10:43 PM   #1
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How do I fill wide gap between tub and tile...caulk?

There is a large gap between my bathtub and the ceramic tiles on the walls due to settling over the years. How do I make this gap waterproof? Will silicone caulk fill a gap of one inch or more or do I need to use some other material or product? Help! Thanks.


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Old 02-26-2005, 07:00 AM   #2
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1" or more, holy cow, thats a lot of settling.
We use 'backing rod' in large gaps before caulking, but not sure if its made that big.


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Old 02-26-2005, 02:16 PM   #3
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I think that you need to discover why the tub is settling. 1" is a long way for a tub to go!
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Old 03-17-2005, 06:10 PM   #4
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I would use a polymer modifed saltillo grout (problem is color selection) We have done some odd large fills with standard modified grout...tho it may crack. Make sure the tub is done could have a big problem on your hands

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Old 03-21-2005, 11:19 PM   #5
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I'm thinking you'd be better off jacking that tub back up and reinforcing it. After you get that gap to less than a half an inch, I'd go with a standard tile wall grout. Do not use a pre mixed grout from a bucket. That is not for wet areas. Get the dry, non-sanded grout in the color of your choice. For filling a gap more than 1/8th of an inch, you should use a thick mixture, and be sure to use a rubber grout applicator, then wipe it with a soft wet sponge, or cheese cloth to smooth and form the joint. I think you'll be happier with this repair than if you caulk it. Caulking tends to mold in bathtubs, and peels away from the tile and/or tub, causing more leaks.
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