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Thread: Replacing major parts - found concrete under sand?

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    Replacing major parts - found concrete under sand?

    Hi all. New here. We have a 18x40 above ground pool that needed wall replaced. Decided that replacing everything with a new pool was cheaper than all the warranty parts we wanted. Discussed with pool store and bought exact pool that will fit the supports to the old pool.

    Thought that would save on paying someone to install for us. So. Case scenario: New pool going in. 12 side buttress-free supports are still in place very securely. Was out cleaning the area around the legs to get to the screws holding the bottom sidewall rail supports and found what appears to be a large chunk of concrete. It is under the sand, but clearly poured on top of the buttress-free straps that go all the way across the pool width. I looked under the sand some more and discovered that they used this concrete like stuff along the entire part of the pool that looks like a metal roofing rectangle - the piece that actually lays down lengthwise on top of the straps that go widthwise.

    Hope that is clear - I have no instructions yet to know what to call the parts. My questions - do we need to replace this concrete like covering? We havea plastic hard bottom that we had left laid out and was going to pull it up tonight to clean it and get it ready for tomorrow when we plan to lay it in the new pool area and retape. I was looking at the sand that is already down there and noting that we would need a few more bags to fill in the gaps...this Texas summer heat has caused normal dirt cracks in the soil and that's when I noticed the concrete-like areas are breaking free. It is not just a clunk of hard packed will not shatter when you bang on it...

    Thanks for any help you can provide. We did not watch the install the first time close enough but we are trying to learn now by watching videos online and reading up on it so we can do this install ourselves.

    Thanks -

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    poolgranny's Avatar
    Join Date
    May 2012

    Re: Replacing major parts - found concrete under sand?

    Do you have pictures? I am no where experienced enough to answer your questions, but I know many on here that are. They often ask for pics so that they have a better idea of what needs to be done so they can answer your questions appropriately.
    Above Ground Pool 15' by 30' Older pool -- Make ? Model ? Cost - Free; Given to Us
    Gallons approximately 11,000 (if I figured correctly)
    New liner in 2007 when pool was moved and installed by son-in-law and family members
    Hayward Sand Filter 150 pounds of sand (purchased new in 2007)
    White River 2 horsepower pump (purchased new in 2012)
    Deck built in 2011
    Bioguard 1200V Multi-Test Kit with an additional Orthotolidine Chlorine Test Kit

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Replacing major parts - found concrete under sand?

    You do not need the concrete under the sand, but being that it's already there and you bought the exact same pool I'd leave it alone and put sand in to level it out. I'd just finish the intall normally.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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