I just used it on the bottom and inside my blasted tub. It's like painting with glue. It gets on everything and never comes off. Gloves, throw away clothing, hat, and air mask a must. It bonds to metal like nothing I've ever seen and when dry it is very hard. I would definatley use it again. I like the silver color because it's makes everything visible underneath vs having a black bottom which might visually hide future rust.