Deck Caulk Pulling Away

  • July 24, 2011 9:14 PM
    Message # 662194
    Deleted user
    I've found a couple of deck boards on which the polysulfide caulk has pulled away from the board on one side, leaving a 1/16" gap.  Am I going to have to remove the caulk there before reforming the seam, or can I just gun it into the crack?  I'm assuming the teak deck boards are all separate boards and the cracks will probably go all the way to the underlying plywood surface.
  • July 24, 2011 9:32 PM
    Reply # 662213 on 662194
    The teak decks are just screwed to the fiberglass surface. The nonskid pattern is even under the teak.....
  • July 24, 2011 9:42 PM
    Reply # 662221 on 662194
    Deleted user
    Thanks Gary.  That's very useful to know, and somewhat consoling that the thorough hosing everything got this afternoon won't have reached any plywood underlayment (marine ply or not).  I think I'll just tape off the boards on either side of the existing caulk, clean out anything loose, maybe widen the gap a bit, especially at the ends, and fill it with fresh black polysulfide. No point taking chances.
  • July 26, 2011 12:21 PM
    Reply # 663565 on 662194
    I would highly recommend using SIS 440 caulking for the seams, as it is specially made as a deck caulking.  It is a one part caulk, and comes in cartridges.  If you do not have a local source, let me know, as I do have access to it.  
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