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Thread: Builder suggesting a Two Stage Bottom for a Vinyl Pool???

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    Builder suggesting a Two Stage Bottom for a Vinyl Pool???

    Hi Gang,
    We're approaching the final moments of our planning stages. We're doing a (primarily) DIY 18x36 IG, and a 20x30 auxiliary building. I'm outsourcing the footings/block foundation of the building. The guy who I am currently looking at signing the deal with for the foundation also claims to do a lot of pool work for the local pool companies. He says that they typically pour a base layer of ready mix 20 mpa concrete at 2 inches thick, and then the next day do a 1 inch skim/smooth coat using type "s" masons mortar. He claims that this is a more cost effective solution over vermiculite/portland.

    Thoughts from the peanut gallery?

    I was under the impression that the vermiculite solution was better for a couple of reasons: 1) the vermiculite "cushions" the vinyl and reduces frictions/wear, and 2) is water permeable preventing/reducing ground water forces from lifting the base, 3) possibly being a better insulator.

    Anyway, I am interested in this if it is more cost effective, as there is a reason we're doing the DIY solution. But I don't want to risk future issues, and would rather do it once and be confident that it's done with value/dollar in mind.

    Thanks for your thoughts! - John
    Assembly stage of:
    18x36 DIY IG - SWG - Pro-Logic P4 - Hayward Universal 12V LED - ClearDeck Inground Solar Cover System - 2 Skimmers, 5 Returns + 2 Step Returns - 400BTU Hayward NG Heater - 1.5HP Hayward TriStar 2sp Pump - 30" Hayward Sand Filter - 280sq/ft Enersol Solar Heating - Solid Safety Cover with mesh drains - 30mil TideWater Liner - - TF100 - 20'x30' Pool House/Dog House :)

    New Lowell, Ontario, Canada.

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    In the Industry

    Join Date
    Nov 2011

    Re: Builder suggesting a Two Stage Bottom for a Vinyl Pool??

    IMO do pool krete only.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

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