Restoration Update: Final Trunk Coating & Inside Firewall I used a scuff pad on the Rust-Oleum rusty metal red primer that was the previous finish of the trunk floor (see post #36 for prep). Then I applied two coats of black "Monstaliner" about six hours apart (they also offer a more expensive "colored' product). I would have preferred to have waited overnight between coats, but I mixed the two-part coating all at once instead of reserving half for later. The next morning, I parked the vehicle in the sun (the trunk lid was already removed). A couple of hours later, I noticed the "Monstaliner" had begun to bubble/lift in a few areas where it had been applied super thick. I moved the vehicle back inside the garage.
The evaporating vapors emitted a strong odor for over a week. I noticed that after the coating had dried, the bubbled areas had permanently lost some adhesion to the surface below. What I cannot determine is if both layers lifted or if the second coat lifted from the base/first coat. I would have to scrape it off to find out.
The other glitch is where I tried to touch up a few areas after the surface had already skinned over. That was a mistake. In those small "touch-up" areas, the finish was left feeling like sandpaper, rather different than the smooth, slick surfaces that were not disturbed by touch up attempts.
Don't know if someday I will try to re-do this area again, using my initial experience to insure a better finish look and superior adhesion. The product is expensive (advertised as being "UV permanent") and I don't feel like repeating the process for the time being. I am satisfied with the projected protection it will provide for the trunk floor.
I prepared the inside firewall by sanding, rust reformer, and RustOleum paint. I left it in primer red. This was completed before the interior floor was painted and insulated.
