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Thread: Plaster Disaster

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    Plaster Disaster

    We inherited a pool when we bought our house and while everything works great, I've always noticed what looked like hard water stains all over the plaster. No matter what brush I used there was nothing that worked to get rid of it or even diminish the definition. I've had to drain the pool and was thinking, GREAT! Now I can sand it out. Nope. Nothing. I don't have the budget to replaster or resurface, but does anyone know what this is, what caused it, and if there's anything (besides resurfacing) I can do? The pool store wasn't sure. (See attached photos)IMG_1784.jpg

    The pool was built in 2008 I believe.

    Thanks for any advice.
    Attached Images Attached Images

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    Mod Squad jblizzle's Avatar
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    Re: Plaster Disaster

    Likely calcium scaling due to high CH levels and allowing the pH to remain too high.
    Acid wash should be able to lessen them some.

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    cowboycasey's Avatar
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    Re: Plaster Disaster

    I would say an acid wash may take some of it away, not sure I would want to do an acid wash myself.. I bet there is a pool comapany that does acid washes and would know exactly what to do
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    Re: Plaster Disaster

    Water hardness was always an issue so calcium scaling might be the case. Would acid washing restore or just reduce the stains?

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    Mod Squad jblizzle's Avatar
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    Re: Plaster Disaster

    The acid should dissolve a lot of the calcium, but it also removes some of the plaster too.
    Jason, TFP Moderator
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  6. Back To Top    #6

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    Re: Plaster Disaster

    I'm thinking to do an acid wash. I'm pretty good about maintaining, but this was how we inherited the pool and it's always bothered me.

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    Divin Dave's Avatar
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    Re: Plaster Disaster

    acid wash is pretty much your only option, other than a replaster. It may not get it all, but should be much better.
    Divin Dave,
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    Mod Squad tim5055's Avatar
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    Re: Plaster Disaster

    Mine has had that kind of splotchyness since we purchased the house/pool. To be honest it bothered me at first, bu now I don't really notice it. My pool is about 8 years old and I figure I will end up with a re-plaster before I worry about an acid wash.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Plaster Disaster

    Thanks for the advice.

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