For those of you that have painted your bumper and tongue with POR-15, can you let me know if I should sand etc....before painting? The PO tried to cover the bumper with Rustoleum spray paint and it looks blotchy....do I need to sand that paint off before using the POR 15 in case there is oil etc... under the Rustoleum or will the POR 15 cover all of it?
Also, generally, how much time should I budget to apply the POR 15 base coat and Stirling Silver top coat? I have a 22' trailer.
Thanks for your advice!