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ransley ransley is offline
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Default Black mold growth in silicone caulk

On Nov 22, 10:10*pm, "C & E" wrote:
Seven years ago I stripped out the old caulk around the base of the tub
surround. *The last caulking was at installation seven years prior but this
last seven it has grown faster and further. *So, is there an anti-fungal
caulk? *I looked in the box stores and asked the help but no go in both..
Any ideas? *Chuck
PS Yes, we have a fan and use it.


You need a really clean surface for caulk to seal and to have no mold.
After all caulk is removed I would kill any mold with laundry bleach,
treat the area with some sort of acid, maybe Lime Away or Muriatic
acid [ which will cause problems you have to be carefull of] to
remove all residue that will keep new caulk from bonding to the
ceramic rather than to lime and soap scum. then scrub the area real
clean with a regular soap. I bet water leaks behind and caulk didnt
bond to contaminents. Try laundry bleach now to see if it clears
anything up, and your bath area is to humid, it isnt the caulk, its
the wall.