Undercoating Removal

Q: Undercoating Removal

I’ve got the Black tar like stuff on the bottom of my 68, I’m trying to get it off so I can prime the under side. It’s sticky and a pain to removal. Anyone have any tips?

A: Sounds like the undercoating I had on my convertible. The way I removed the junk was to heat it with a propane torch just until it becomes soft. I would then scrape it off using a cheap scraper. I rounded the corners of the scraper so I wouldn’t gouge the metal. When I heated the undercoating, it would peel off in strips. Once I had removed the most of it, I used a Scotchbright scrubbing pad, mineral sprits, and a rag. I feel for you. It’s a nasty job. Be sure to wear gloves and goggles.

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