I've bought some epoxy paint from Home Depot that says it is used to recoat bathtubs etc. for around 15 USD. It is in two parts much live I've read in posts and books. Hopefully this is the right stuff. It came in 1 quart which the book I'm going from recommends and it is in two parts. I guess I'll wait to see how thick it looks when I'm done to see if I think recaulking the seams will be required. The joints I have now are perfect.