Improperly installed products, poor ventilation, and improper cleaning and maintenance are the primary causes of unsightly mold in bathroom areas.
Routinely replacing the caulking can:
Prevent health issues caused by mold
Prevent water from leaking outside of your tiled area
Drastically improve or completely change the look of an existing tub, shower, sink or backsplash
The caulk used in your bathroom and/or kitchen protects the wall behind it and the sub-floor below it from water damage. It is a good practice to periodically replace old caulk and recaulk joints between the tiles and your tub, shower, sink, or any place two planes of tile or two different construction products come together. Recaulking should be added to your annual or semi-annual bathroom maintenance checklist.
Another good reason to recaulk is to remove the black mold that sometimes grows in and behind the caulking. Properly installed caulk can be damaged by improperly scrubbing it or incorrectly using a squeegee. Damaged caulk allows moisture to have an open path to substructures and promotes the growth of mold.
After cleaning and recaulking.
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