Sand as Steel Wall Backfill


Active member
May 22, 2020
Kelowna, Canada

PB is recommending backfill of steel walled vinyl inground pool with sand. Most recommendations I have seen have been for 3/4 inch clean rock. There isn't alot of discussion I can find on using sand, except for fibreglass pools. Is sand a good choice? Why or why not? We are in an area with mild, but real winters.


Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
Sebring, Florida
Sand exhibits some liquid properties and can flow and wash out......not a good choice and am mildy surprised a PB would suggest it. 3/4 clean rock is the VERY best in my opinion. I back filled a 2' perimeter of a 25 x 54 pool and 12 years later, no settling whatsoever.......3/4" clean rock.