We had a pea gravel floor installed for the third time by someone who obviously lied to us about knowing what they were doing. Our problem is the floor is very rough the kids cannot walk on it with bare feet. Could someone tell me what kind of epoxy I could purchase to level this floor to the top of the stone, and is their a special sand or something I could mix with it so no one slips with wet feet. The room is about 250 square feet about how much epoxy would you recommend. Thank you in advance