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Thread: Back-filling against pool walls.

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    Back-filling against pool walls.

    Was wondering what way to go. After the backfill is removed when it is time to replace should gravel be used or the overburden dirt. People have said gravel but every pool so far I looked at was just filled back in with dirt. What are the pros and cons other than cost?

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    Re: Back-filling against pool walls.

    Not sure where you are located. Location will affect dirt composition some from geographic area to area. Here in Missouri we have alto of red clay and gray clay, if we use it to backfill with it will continually settle as we cannot compact it enough around a pool wall. For that reason we usually use 1" clean limestone gravel which is easily obtained in my area. We don't run any kind of compactor over it as we do this before putting water in the shell.
    Over 30 years in the pool business
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    Re: Back-filling against pool walls.

    Our soil in NC is similar to swimcmp's in MO. It cannot be compacted well against a normal pool wall.

    Backfill with the rock he suggests, no compacting necessary, and you will be ready to pour your decking.

    Your soil may be better but I don't think their is ANY soil that will work as well as the rock he suggests.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Back-filling against pool walls.

    Should have added this would be back fill for a vinyl pool with steel walls. Thanks for the replies.

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    Re: Back-filling against pool walls.

    If you decide to use the dirt (like I did)--don't get rid of your dug out dirt pile! I guarantee you'll backfill it at least twice more.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    Re: Back-filling against pool walls.

    I used all stone
    DIY 18x36 IG Vinyl Rectangle with 2 foot radius; Steel Walls. 8' steps w/t 2 step jets; 2 MD, 1 Skimmer, 2 returns; Hayward Pro Series 24 Inch 300# Sand Pool ; Hayward color logic 4.0 LED light; 2" PVC pipe 4 Jandy Valves, Hayward PL-P-4, SWCG

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    Re: Back-filling against pool walls.

    Definitely gravel.
    18' x 36' saltwater inground vinyl pool

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    Re: Back-filling against pool walls.

    Well gravel was planned and a lot of it will be coming in. Wanted good drainage since the build is a partial slope. We will use up the backfill dirt to level up some and will still need more.

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    Re: Back-filling against pool walls.

    Mac put a drain against the wall and take it to daylight. This will let any water that collects in the gravel. It will prevent the liner from floating.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

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    Re: Back-filling against pool walls.

    swimcmp, there will be a landscape filtration pipe encircling the entire pool then out to the low end slope to daylight. This is what you mean correct?

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    Re: Back-filling against pool walls.

    Yes that will work. We usually use 4" sch35 sewer pipe, we have seen less crush and collapse problems with that. The 4" black ads drain tile has a tendency to collapse over time.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

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