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Thread: Pool sealant for space between concrete and coping

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    Join Date
    May 2015

    Pool sealant for space between concrete and coping


    Hi! When we had our pool done they placed this styrofoam looking stuff between the concrete and coping. They said it's pretty standard but it looks pretty sub-standard to there a better sealant to use between these spaces- something that doesn't look like its going to break down in a year or two ? Brands and where to get them would be helpful! Thanks!
    Inground Pool Completed April 2015
    Salt Water Generator- Nature 2 Fusion Soft
    33,500 gallons, Gunite/White Plaster
    Cartridge Filtration
    Heat Pump

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    Join Date
    Aug 2014

    Re: Pool sealant for space between concrete and coping

    I think my PB used Seca flex looks good
    1200 Sq Ft 41,000 Gal. Gunite, JANDY SVRS VS pump, JANDY JXI 400,000 BTU, Polaris 280 w/ 3/4 BP, Rockwall and Grotto (w/6 jets and blower), 2 JANDY Lam Jets, 2 LED Bubblers, 5 Ledlights, AQUALINK P16 RS, 90% Quartz, SWF 185 GMP BP, SWF 125 BP, Levelor K1100 Autofill, AP Digital SWG, 2 skim and 5 returns, and mostly 3 inch piping

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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Pool sealant for space between concrete and coping

    The right way to finish that job is to cut back the styrofoam a bit and finish the gap with a flexible mastic (caulking) compound. The mastic can even be sanded after application, but before it sets up, to make it blend in with the concrete and coping. It's not "difficult" to do per se, but it does take some skill because mastic is thick and gooey and one can go from a professional looking finish to a lousy looking hack-job in a hare's breath.

    If you can't get a decking pro to do the job you can do it yourself. I would just suggest you practice a lot first.
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Pool sealant for space between concrete and coping

    Sikaflex self leveling polyurethane is the right stuff.
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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Pool sealant for space between concrete and coping

    Sometimes that Styrofoam is perforated and the top 1/2 inch will pull off rather easily, leaving space for caulk.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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