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Thread: Gunite curing times

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    Gunite curing times

    i have read that gunite needs to cure - some sites say a few days others say a month. Why is there such a broad recommendation??
    Oklahoma
    30X20 Gunite pool completed in July 2013

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    Join Date
    May 2011
    Location
    Tampa, FL
    Posts
    130

    Re: Gunite curing times

    My PB says it has to cure a month to be the strongest
    - Vanessa
    Almost done! 15x30 IG 3ft-8ft deep | SWG | Spa w/ 400K Natural Gas heater | Blue Granite Pebble sheen | JEP 1.5 VS pump | DE Filter | White/Tan/Charcoal Brick Pavers | Bronze Screen | Solar Panels

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    Re: Gunite curing times

    Mine said a couple days..hmmmm
    Oklahoma
    30X20 Gunite pool completed in July 2013

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    Join Date
    Jul 2011
    Location
    Arizona & California
    Posts
    768

    Re: Gunite curing times

    I suppose there are different ways to look at this issue. Of course, gunite is stronger after a month of curing. But the criteria is that the gunite needs moisture to continue to cure (hardened) sufficiently. If it dries out, no continued curing or hardening is taking place.

    But even if the 3-day gunite is plastered over, the gunite will continue to cure and become stronger, because brand new plaster allows some water to pass through during the first few days after plastering. After about a week, the plaster is virtually water tight by that point in time. I suspect that enough moisture would be available to the gunite for proper curing for a month to sufficiently harden.

    Another issue is that fresh gunite chemically bonds better to the plaster than older gunite, which is why waiting more than a couple of months to plaster can be problematic. At some point in time, older gunite only achieves a mechanical bond, instead of both.

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