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!