1 1/2" styroform v sand bottom

[hrsdennis]

Hi Carl, I know what you mean about vermiculite. So hard to keep smooth. The worst part is, when you go to replace a liner it is almost impossible smooth out.

As for the duct tape, I use it on every pool I install. Have for over thirty years, never a proplem. I take pools down and move them from yard to yard on a regular basis, never a problem from duct tape.

Maybe it's a guy thing but I sear by it, Dennis

[gwrace1]

We used a 2" sand base, foam cove and a Gladon Perfect Bottom.
The floor of the pool is foot print free, and the liner is protected from insects, grasses and roots. The floor feels like a concrete base. Nice and smooth. It's pricey but made for a real nice installation. Gladon has a 10 year warranty on the product.

[zephans]

Ok, I have a related question: I'm installing Happy Bottom foam with ~2" sand under it.

QUESTION#1: What type of sand do I need (or at least what types should I avoid)?

a. Mason sand - recommended for sand-only install per thread above.
b. Screenings? - mentioned in one or two threads I've read (months ago).
c. ??? (I have no idea what other grades of sand are available and what is best value and what to avoid)

QUESTION #2: Do I need to tamp down the sand?


For my install perfect sand is probably not as critical due to happy bottom foam. However I think the stuff is only 1/4" thick so I want to ensure the sand base is level and smooth (no footprints).

FYI: I've also read that watering the sand after leveling out the sand will help it settle in smoother. (I'd assume you need to spray water thin so it doesn't move the sand.)

I'm planning to purchase sand tomorrow so quick replys are most welcome!

[NWMNMom]

If you are looking at any of the posts that include leveling, etc. regarding the "screenings" that is NOT sand, it is sometimes called crusher run and is crushed rock - Good for under rails as it compacts nicely, but not good to be in contact with a liner. Masons sand is best. Most other sands may have large or sharp rocks in them.