POR15

I'm certainly no expert on the stuff, but doesn't it defeat the purpose if you remove all of the rust (i,e., Paint Over Rust)? At that point, why not just use a different product?

Not to be a smart ***, but what do the directions say?

not a smart ***… so no worries

direction says to remove all loose rust. Guess everyone has a different definition of all loose rust… so looking to those that have experience to say if it’s enough