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Thread: Is it plaster?

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    Join Date
    Jun 2015
    Ponte Vedra Beach, FL

    Is it plaster?

    Hello Everyone- I'm new to the forum. We have an early 80's vintage in-ground pool built by Sylvan. I believe it's concrete. We bought the house 6 years ago with the pool "as is", and used it for three years. The bottom was faded (blue) and rough on the feet. I thought it was painted and wearing off. Knew I'd have to do something down the line. Uncovered the pool two weeks ago, drained it, and was shocked to see it was stained brown, green and black and also looked like concrete was showing through in spots. After pressure washing, I'm wondering if it's not plaster instead of paint. Here is a pic of an area where I blasted away the "plaster" to reveal very rough concrete aggregate underneath, and a pic of a chunk of the "plaster".

    Can anyone tell? The surface is rough but still bonding to the concrete (I have very few areas like the pic that I can blast through); if plaster, would an acid wash, patching, or sand blasting allow me to re-plaster without chipping it all out?

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Is it plaster?

    Welcome to TFP!!!

    Looks like plaster to me. If it is delaminating like that, it would be best to chip it all out prior to replaster, IMO.
    Jason, TFP Moderator
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    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Columbia, SC

    Re: Is it plaster?

    For years, the most common way to build pools in FL has been a steel skeleton, sprayed on concrete (gunite) and then a final coat of plaster troweled over the top.

    So I'm going to guess its a gunite/plaster pool. They generally need refinishing every 10-12 years. That involves chipping off the plaster layer and laying on a new one.
    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: Is it plaster?

    Looks like plaster. I agree with a full chip out and replaster.

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Is it plaster?

    Delaminating plaster. Now you can upgrade to one of those fancy quartz finishes.
    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!

  6. Back To Top    #6
    Hemess's Avatar
    Join Date
    Aug 2012
    Norman, OK

    Re: Is it plaster?

    It looks like it was a very thin layer of plaster.

    Yay on new plaster (jealous!).

    Boo on the expense (not jealous). Keep us posted.
    28,000 IG, gunite, IntelliChlor IC40 SWG with SPA,
    Intellichlor/VS Pentair
    Norman, OK

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