Fett, I would think it would work better than just undercoating, but I could be wrong. Yes it will be more expensive, but I think it would be worth it.
Thanks for the tips SVT. I have a dual canister respirator I used to use for airbrushing I can use as well as some elbow length chemical gloves as well. I plan to do exactly what you did, I'm coating EVERYTHING. I was hoping for a clear weekend so I could finish stripping the interior, but alas...rain. Do you have any pictures of yours before you installed everything?
Also, I believe I have some rust under the rear interior pieces, right next to the back seat. How well does por-15 do on rust, I'm afraid to pull everything apart and find a ton of cancer that I can't get to.
POR15 holds extremely well to rust and regular painted metal surfaces. It doesn't stick to bare/clean metal too well, afterall, it is rust preventive and rust stopping paint. I had a couple rust spots on my floor as well. I just scuffed the rust and surrounding area with 80 grit, then sprayed or brushed the POR. I usually brushed the stuff. It doesn't go as far brushing, but the overspray from that stuff gets everywhere, and it even stuck to my contact lenses!!!!!
I couldn't see when I was done.
Another spot to look for rust is inside the trunk, behind the wheel and in front of the bumper. I'm talking about the inside of the "outside" quarter skin...if you know what I mean. You will know what I am talking about when you take the carpet up. Put a flashlight in there and look around. I had some rust (minor), so I just scuffed it with 80 grit, then literally poured the POR15 down there, and brushed it all around. Works great.
Here is the underside of my car. I have a bad inside pic too. I also have a pic of the rear quarter areas outside....look in the trunk in this areas section.
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How is the Por15 stuff as far as taking chips? I had an idea of stripping my interior floor pan and just coating the whole thing in Por15 and leaving it that way (for a sort of road race inspired look). How well does it hold up to wear and tear and the occasional dropped wrench? Is this stuff "self leveling" paint...as in you can brush it on and it smooths out like it's been sprayed on?
POR15 is excellent against chips. I hammered in a peice of floor pan to clear a fule line, and it didn't even chip off!! It will laugh at a dropped wrench. But it is all in how you prep it. While it can go over rust, you still need to clean the area of wax, silicone, grease, oil, and dirt. If you spray it, you are suppose to spray it thin, let it dry for 12-24 hours, then scuff and spray again. They recommend no more than two coats. The coats thicken up as they dry. Also...if you brush it, it smooths out pretty nice as long as you brush it good. Use a quality brush.
