Re: Rust sealer-treatment

Posted by Mark Graber On 2014/9/24 15:25:36

I spent most of last winter cleaning the undercarriage, sheet metal etc. Agonized about what products to use. I think POR 15 is good stuff but really a PIA to use. The directions call for prepping the metal with an etching agent and then rinsing. They also recommend two coats, with the second coat timed before total set-up of the first coat. I also noted that POR 15 wants to pull away from sharp edges so they need to be rounded with a file. Also, it dries shiny black so doesn't work well under the hood where semi-gloss is needed and you have to topcoat, again within a pretty strict time limit, or else sand before top coating.
Like I said, I think its great stuff but painful to use. I ended up using it on brackets etc. when I knew I had the time available to topcoat timely.
Good Luck
Mark