The Best Above Ground Pool Base

I bought a new above ground pool and don�t know what way I should go with the install. I'm getting a lot of different answers and warm weather is coming
My pool is going over a driveway that is made of crushed sea shells. What would you suggest?
gorilla bottom
happy pad-soft foam
sand
I even heard I could use foam insulation board

I was thinking of gorilla pad with happy pad for a soft bottom without the sand but I don�t know...can you help? Thanks Jon

Hi Jon. I prefer sand but only if it is good quality and not to large. Sand is the easiest way to get the bottom of the pool nice and smooth. If enough time is taken in the preparation, I also like the 1� or 1 1/2� Styrofoam 4x8 sheets. I did this with one of my own pools and it made the perfect pool base.

The problem with Gorilla bottom and happy pads are keeping them smooth while you are installing the liner. That, and they are so thin, every little imperfection in the ground shows through. If you go with the foam be sure to visit In The Swim and get the preformed pool cove.

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The Best Above Ground Pool Base

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Apr 03, 2010

best base for pool built on solid rock
by: Anonymous

we are getting ready to install a 18'x33' above ground pool. The location we have to put it up is solid limestone...with no soil...so the challenge is what do we use as fill to level the area. Our plan for now is to put down 3/4 down to allow for water seepage and then on top of it a sand/concrete mix (muck sand). We have not been able to get a confident answer as to if this is the best method for our situation. Any suggestions welcomed....

Ryan

Hi Ryan. That sounds like a good plan to me, best of luck with it.

Jun 05, 2010

Pool with Deep End
by: Anonymous

We are installing a 30' diameter pool with an expandable liner. We have excavated half of the pool deeper with a slope in the center. What do you recommend for the bottom since there are slopes involved? I like the idea of the rigid foam but I'm afraid we will damage it walking around and up and down the slopes spreading the liner. We had thought about carpet padding originally.

Thanks,

Bruce

Hi Bruce. I always use washed mortar sand for the base of deep end pools. It sticks to the slopes and is easy to smooth. I have seen carpet used effectively also.

Jun 20, 2010

Installing 18x33 Oval
by: Jeremy

Love your site and I wish I had found it prior to the actual purchase of my pool because I'd have gone for the non-braced over the braced.

My question is this. I live in Texas and the soil is primarily black clay. Our AGP, is going to be counter-sunk 2 ft to meet up with the existing deck that was here when we bought the house. I have almost finished leveling the area with a bobcat because it's really the only thing that works with the hard black clay.

The pool instructions say that my trenches should be down 3 1/4" below the surface. Is that the surface of the ground? Or the surface of my sand base? The pictures are pretty lousy on that.

What is the recommended amount of sand for an 18x33 oval. I did the math and a 2in base is approximately 3 cubic yards. But with the 4 in base, I know I'll need more.

Finally, I've seen you mention Masonry Sand. Is polymeric sand better to use? Or is the Masonry sand the best?

Thanks in advance for your help,
Jeremy

Hi Jeremy. I would go with closer to 5 yards of sand. The trenches need to be dug below ground level, not sand level.

Jul 23, 2010

Soft pool bottom
by: Tom

I just had a 24 foot Esther Williams pool installed professionally. The liner is a beaded hopper liner that allows for a 6' deep end. I am concerned with the installation as the pool bottom is very soft and is allowing divets to occur. What is the problem? Too much sand and an improper excavation? Not the right sand? Do I need to use a different type of base? Please help!

Hi. It might be to much sand or sand that was not watered and packed. It is next to impossible to re-install a deep end liner so fixing the problem will probably require a new liner. If it's not to bad your best bet is to use it the way it is until your first liner change. At that time the sand will be packed down and easy to re-smooth. It stays smooth much better the second time around.