Its according to how many coats you are going to install and how thick you put it on. I would guess at least a gallon per coat. Most people put three or four coats.
I would go with a vinyl they call loose lay because you don't glue it down it just lays in place so if you had a flood you could pull it up dry the area and roll it back out. It is thicker than your normal vinyl so it lays down really well. They sell it at home depot and lowes.
Flooring «...
