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The one comment that made me stop using silicone caulk in bathrooms
A tile guy on Reddit said silicone traps moisture behind the grout and I checked my 3 year old shower and sure enough there was black mold under all of it, so now I just use sanded caulk for the change of plane joints.
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sandragrant2d ago
Three years is about right for that kind of hidden mold. I had the exact same thing happen in my last house, pulled off the silicone around the tub and found a whole colony of black stuff living under there. It was nasty and took forever to clean. The caulk looks clean on top but it's basically a plastic sheet that traps all the moisture against the grout. Now I just use a good quality sanded caulk too and I check it every few months for any cracks. Pain in the butt but way better than dealing with mold.
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nathan_kim2d ago
Actually sanded caulk isnt for bathrooms, its for tile floors.
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parker_webb2d ago
Wait, are you saying sanded caulk actually works better for bathroom mold than the regular silicone stuff? I had the same nasty surprise behind my shower caulk last year and I'm totally switching to sanded now.
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