I’m constantly replacing the caulk between my shower walls and floor due to mold. How can I prevent mold from forming on the caulking in my shower?

– Bill

Hi Bill,

Any time you put caulking in a high-moisture environment, such as in a shower or tub, the result is usually mold and mildew. One thing I always recommend is to use 100% silicone caulking in a tub or shower rather than acrylic caulk. The caulk you use in a tub or shower should also contain a biocide to prevent mold from forming.

While several manufacturers have come out with pretty good mold-resistant caulk, I’ve really been impressed with GE Silicone II* K/B Supreme.

Advantages of GE Silicone II* K/B Supreme include:

  • Cures Fast: Can be ready for use in as little as one hour and no more than eight hours (depending on temperature, humidity, and size of the bead).
  • Mold-Free: Contains a biocide that keeps the caulk mold-free for 10 years if the caulk is cleaned regularly.
  • Waterproof: 100% silicone caulk is and remains waterproof over time.
  • Flexible: 100% silicone caulking doesn’t crack or shrink and remains flexible over time.

Good luck with your project,

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Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio, TodaysHomeowner.com, and Checking In With Chelsea, a décor and lifestyle blog.

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