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Thread: Repairs and Repainting Concrete Pool...???

  1. Back To Top    #1

    Join Date
    May 2016
    Elkhart, IN

    Repairs and Repainting Concrete Pool...???

    We have drained and cleaned our pool which is a concrete bottom with fiberglass panel walls. We have some "bubbling" or almost "warts" that have small cracks in the fiberglass walls that have dirty water that leak out of them since we drained the pool. I went through and cleaned them and then put a small amount of marine grade caulk on each spot thinking this would seal the crack in each spot before we paint.... however a few days later the sealant/caulk has bubbled and turned black - looks like water is bubbling behind the seal. I dont think the panels need replaced but would like to know if anyone has experienced this and what we should do before proceeding with paint this weekend. Our pool is in fairly good shape and we thought just need a new paint job... but now this seems to have started and gotten worse since we drained the pool last week. We are located in Northern Indiana so we only have a few short months in the summer that we use our pool.... Any suggestions on how to repair these tiny cracks are appreciated!

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Repairs and Repainting Concrete Pool...???

    Check out this webpage. The Pool Project
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Repairs and Repainting Concrete Pool...???

    Welcome to TFP!

    The bubbles in the FG is called osmotic blistering. Yes, water is in the blisters. Happens to boats too. Good luck with your project!
    TFP Moderator
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