Best Caulk for Preventing Mold and Mildew Growth

Discussion in 'Shower & Bathtub Forum & Blog' started by Norwegianwood, Aug 22, 2010.

  1. Norwegianwood

    Norwegianwood New Member

    Jul 1, 2010
    I've heard that polyseamseal is a good product for inhibiting the growth of mold and mildew on your caulk. Wanted to get some opinions on this.
  2. Ian Gills

    Ian Gills Senior Robin Hood Guy

    Jul 24, 2007
    Robber, with some DIY on the side.
    I have used a lot of caulk for many different projects. The only one I have had any real success with is window caulk, like Quad. You could not use this for interior projects like bathrooms but it is the only caulk I have used that does not mold, discolor or peel over time.
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  4. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    Even the best caulk will mildew in a bathroom sooner or later if the air is dark warm and moist. The absolut BEST preventative of mildew in the bathroom is adequate ventilation. I use a minimum 100 CFM, maximum 1.0 sone fan. If the room is larger than about 10 X 10, consider higher CFM, possilby a remote inline fan.
  5. samd

    samd SamD

    Sep 10, 2010
    Aerospace structures engineer
    Lake Forest Park, Wa
    Ian's comment about Quad is spot on in my experience. Not sure what the stuff if formulated from but it's amazingly resilient and when removed a couple of years later, still seems almost "tacky". That said, it's not for interior use due, I believe, to the VOC issue. Then again... I've used it on a number of occasions "inside" and once the VOC's liberated, things were fine. Anything with polyurethane I'd stay away from. Silkolene, various others and even the 3M $20 a tube I tried from the boat store (uh huh- those were supposed to be the cat's-ass of caulk- made in France of all things!) All yellowed terribly once the usual cleaning agents used in bathrooms were applied. Terrible stuff, just don't understand what the story is with Poly....
  6. aboveb

    aboveb New Member

    Sep 4, 2011
    New Jersey
    In accordance with EPA, when the spot infected with mildew is bigger then 30 sq . ft ., you need to seek for specialist to do a mold elimination for you. The simple truth is, at times mould is concealed behind the wall surfaces, under the carpeting, and so forth. Its often a good approach to have a mould inspection if you happen to suspect big mould contamination. In the event you in Nj, check out this company - Mold Removal NJ . Best of luck!
  7. dlarrivee

    dlarrivee New Member

    Jun 28, 2009
    Let me post my sales pitch up next...

    Mold only grows if there's moisture, caulking doesn't fix the problem.
  8. johnfrwhipple

    johnfrwhipple BATHROOM DESIGN & BUILD

    Jul 20, 2009
    Design Work
    North Vancouver, BC
    A poorly built shower will take on a lot of water and often Mastic is used to set tiles in our wet rooms. By building a better shower you help eliminate food sources for mould and reduce the water absorption rates.

    Often a shower that mould quickly is suffering from other issues.

    Good Luck.
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