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Thread: anyone resurfaced themselves to fix a leaky concrete pool?

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    anyone resurfaced themselves to fix a leaky concrete pool?

    We have a 30 year old concrete bottom, fiberglass sides inground pool that leaks very badly when the temp changes spring and fall, and we have to run a hose to it 3 hours a day to keep up with the leak. Our thought was, fill in the deep end, and fix the leaky drain while making it 3 foot across the whole pool for easier upkeep. Has anyone tried to fill in the deep end, then re concrete the entire bottom? Any suggestions?
    Building year round use outdoor in ground pool in Wisconsin

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    Re: anyone resurfaced themselves to fix a leaky concrete poo

    Hi Sally,

    I am not a licensed pool builder, just a pool service you can take everything I say with THAT in the background of it...

    But it sounds like the biggest part of the problem is that you have two different materials being used to form the pool. To me, that sounds like trouble from the very start. If this were just a pure concrete pool, you could just patch leaks or cracks with epoxy patching materials, and then epoxy paint the whole pool interior. This gives you a pool that is extremely easy to maintain (algae just can't seem to get a grip on that slick epoxy paint)...

    But in your case, you are going to need to find some way to marry the fiberglass walls with the concrete bottom so that they really are married and never stray on each other...and that could pose some problems. Once you know you have a pool that is structurally sound, a high-quality epoxy paint (BTW, proper preparation, rain guarding, and curing is A MUST with this coating--no shortcuts!) is an inexpensive way to get yourself a wonderful pool that is easy to maintain. I know this from experience with my customers' pools when they need resurfacing (etched plaster, etc.).

    Hope this helps you,


    Big Island Pool Service

    No pool of my own...but my customers' pools are ALL my foster babies!!

  3. Back To Top    #3

    Join Date
    May 2007
    South Central NJ

    Re: anyone resurfaced themselves to fix a leaky concrete poo

    You have what is known as a Hybrid Pool. You will need a pressure test and a diver to locate and mark the leaks. Until that is done, nobody can tell you what the next steps are.

    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  4. Back To Top    #4

    In the Industry

    Join Date
    Nov 2011

    Re: anyone resurfaced themselves to fix a leaky concrete poo

    Look up this company has a system of fiberglass mat with epoxy resin that you could cover your main drain and concrete bottom and mate to your existing fiberglass walls. It is kinda pricey and requires a trained crew to install, but it will repair your problems.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

  5. Back To Top    #5

    Join Date
    Mar 2007
    Virginia Beach

    Re: anyone resurfaced themselves to fix a leaky concrete poo

    You also might consider converting it to a liner pool. You could have a line built and probably lay it right into the existing shell with minimal work.
    6000 gal inground fiberglass
    1.5hp pump / sand filter

  6. Back To Top    #6

    Join Date
    Mar 2010
    South OC, California

    Re: anyone resurfaced themselves to fix a leaky concrete poo

    My plaster pool was losing water thru the surface. Not sure how old it was, but the plaster was bubbling up all over since the pool was drained for a long time and delaminated. Didn't find out until after we bought the house and talked to neighbors. The amount of water I was losing was about 3-4 inches a week, but it seems like your case is really extreme.

    Now that mine is resurfaced, it loses very little water.
    32' x 15', 25k gallon gunite IG pool, California Quartz plaster in Tahoe color
    Pentair equip (Intelliflow VS+AU pump, DE filter, IC40 SWG)
    Spa wall removed to make "seating" area

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