GE Silicone, PolySeamSeal, or Polyurethane Caulk for Tub Surround?

Discussion in 'Shower & Bathtub Forum & Blog' started by molo, Jan 6, 2009.

  1. molo

    molo Member

    Sep 23, 2006
    Cold New York
    GE Silicon

    Polyurethane caulk
    (if you know of a good brand for this application please recommend one)

    This is for a tub surround
    Last edited: Jan 6, 2009
  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    I have an issue with GE Silicone II. You will find, in VERY fine print, on the label, that it must be stored at below 80ºF. Now, depending on the time of year, and what state you live in, it is possible that during transport, warehouse storage, delivery, and even in your own truck, that it may be overheated at some point. If it is too hot for too long, the result is that the product will fail to cure completely. GE will replace the product but not compensate your labor.
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  4. Basement_Lurker

    Basement_Lurker One who lurks

    Jun 21, 2007
    I smash things and demand money.
    Victoria, BC
    I have always used GE Silicone II Kitchen and Bath and have been quite happy with it.

    "GE Silicone II Kitchen and Bath with BioSeal protects like nothing else against leaks and water damage. Keeps stain-causing mold and mildew from growing on the sealant. Doesn’t shrink or crack. Provides an easy-to-clean surface. Stays flexible forever. And looks new for longer. With Silicone II, you’ll do the job right. And for good."
  5. Tub Refinisher

    Tub Refinisher Tub refinisher

    Jul 1, 2008
    Self Employed Franchise Owner
    Dallas, Tx
    As one who refinishes tubs for a living, I have caulked "a few". Personally I don't like silicone because it's very messy to work with, and unless you're caulking around a shower door track where there's a potential for movement, silicone is not really necessary (IMHO).

    I like Polyseamseal, although it is a little harder to work with than DAP, and tends to shrink a little, it seems to be quite durable. Make sure you get the one with BioGard.

  6. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    Polyseamseal would be my choice!

    Last edited by a moderator: Oct 14, 2015
  7. Cass

    Cass Plumber

    Nov 12, 2005
    I used to use the filling from Mallow cups but found Polyseamseal does a better job...
  8. Tim222

    Tim222 New Member

    Sep 7, 2007
    What are the pros and cons of using polyurethane versus silicone at changes of plane in a shower? Which is better able to compress and stretch to accommodate movement? Is one material better than the other at inhibiting mold and mildew? Does one last longer than the other?

  9. jbjeffreyk

    jbjeffreyk Reporter

    Apr 23, 2012
    Senior aeronautical drafter/designer
    Nova Scotia, Canada
    I am having issues with the bonding/sealing properties of GE silicone II when applied to acrylic bathtub surfaces.
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