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Thread: hairline crack in gunite pool

  1. Back To Top    #1

    Join Date
    Apr 2009
    South of Houston, Texas

    hairline crack in gunite pool

    Hi everyone, I have noticed the last 3-4 yrs a hairline crack in our plaster/gunite pool. It is very tight, cant hardly get a fingernail to stop in it but its there none the less. Today, with goggles, I looked over most of my pool and saw another hairline crack on the far end. Both cracks seem to start at the top of the plaster, right under the tile work, and they both extend down in the water maybe 3-4 feet. Should I be concerned or is this a normal occurance. My pool is about 7 yrs old and I do think at least one of the small cracks has been there for 3-4 yrs at least. At this point I am pretty sure no water can escape but should I think about doing something now or just wait and see what happens over the next few years ?? Thanks for you input.
    IG pool gunite/Plaster, 33 x 20, 20000 gal., 4.5ft-5-3.5ft, Triton FNSP-36 DE filter 36sqft 90gpm 43200 in 8 hrs, WhisperFlo Triton 1.5HP, Polaris 280 with booster pump, and a Dog that loves to swim,South of Houston.

  2. Back To Top    #2

    Join Date
    Mar 2007
    Coastalish 'down easter'

    Re: hairline crack in gunite pool

    As long as you're not loosing water, I'd just keep an eye on it for now. Odds are that anything you did to cover the cracks would look at least as bad as the hairline cracks

    If it's something you just can't live with, by all means, replaster the pool. If you go that route, any structural problems could be addressed at the same time - but it means down time for the pool and we're in the middle of the swim season.

    DO try to keep an eye on your water level - if you suspect you are loosing an abnormally large amount of water (for use, backwashing and evaporation) - check out the leak detection article in Pool School, report your findings here and we'll advise
    Luv& Luk

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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