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Old 12-07-2013, 01:20 PM   #1
rkj
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Caulking or adhesive around tub has mold.


I don't know if its caulking or adhesive, but its turning black. I tried to use a toothbrush, but I think its underneath the caulking. Few pics:


http://i.imgur.com/SsgVyGo.jpg


http://i.imgur.com/aDsmUVd.jpg


I don't know if its mold or adhesive, but I just feel like putting white caulking on top of it. I don't know how to go about removing it without scratching the tub.
The tub is a fiberglass surround, and I think it cames in two pieces which join together. What could I try?
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Old 12-07-2013, 01:58 PM   #2
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I can't make much out in those pictures, but generally; if the caulking is ugly, replace it. If you caulk over it, the staining will show through. Get a caulking removal tool, it's got a metal "loop" sort of blade on it that digs under the bead of caulking and peels it away. A small putty knife helps for the difficult spots. You want to try to remove as much of it as you can, and run a new bead of white silicone caulk. If you're careful, you won't scratch anything. Plastic-bladed scrapers have less of a chance of leaving marks on the tub.
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Old 12-07-2013, 04:34 PM   #3
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Looks like someone made a real mess of that caulking.
It only needed to fill the gap, not be all over the enclosure and tub.
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Old 12-07-2013, 10:29 PM   #4
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Quote:
Originally Posted by McSteve View Post
I can't make much out in those pictures, but generally; if the caulking is ugly, replace it. If you caulk over it, the staining will show through. Get a caulking removal tool, it's got a metal "loop" sort of blade on it that digs under the bead of caulking and peels it away. A small putty knife helps for the difficult spots. You want to try to remove as much of it as you can, and run a new bead of white silicone caulk. If you're careful, you won't scratch anything. Plastic-bladed scrapers have less of a chance of leaving marks on the tub.
ok, the good thing is that the existing "caulking" isn't too deep but I was still not sure if i should remove it aggressively. Will try though....What size bead should I smooth it out to with the silicone? 1/4"?
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Old 12-10-2013, 03:50 PM   #5
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I would also recommend that you go with a good quality caulk that resists mold and mildew. The extra couple bucks spent are well worth the hassle of having to remove and replace it again.
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Old 12-10-2013, 09:34 PM   #6
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Looks clear, so its likely silicone. You may have difficulty with adhesion on a surface with silicone film on it.
All caulking is not created equal. The stuff labeled "Kitchen and Bath" has a mildew-cide in it to discourage mold.
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