I have a huge clay pot & need a sealer to keep moisture off of it,any suggestions?
I use Rust-oleum Crystal Clear. You need to make sure the pot is totally dry - keep in the house for a least a couple of weeks after firing or after being outside - & then spray inside & out.
Alternatively apparently there is a brush on solution that waterproofs brick. I've never used it but I assume it would also work on terracotta.