Black tar removal from inside walls and ceiling

[EastCoastCB]

Originally Posted by queen_bee

I removed mine because i read it was extremely flammable and id seen many skoolie fires that looked pretty bad anfld i suspected this is why. It is a huge mess. Also saw a dude who ignited his while welding and burned a hole in the bus. Anywho i used Turtlewax Bug and Tar remover which worked well aside from being messy. No toxic fumes from the aerosol airplane cleaner

Mine wasn't flammable AT ALL. We even tried using a torch on it.
No wax and grease remover, gasoline, or any chemical I tried worked except the stripper. My guess is you just have black goo and not the dreaded asphalteum.

[bridg73988]

I haven't tried any chemicals on it yet. I wouldn't even try to remove it if I knew for sure that I could spray foam over it without any issues.

[o1marc]

Originally Posted by bridg73988

I haven't tried any chemicals on it yet. I wouldn't even try to remove it if I knew for sure that I could spray foam over it without any issues.

Do you know that you can't? Get a can and do a test.

[bridg73988]

Originally Posted by o1marc

Do you know that you can't? Get a can and do a test.

No, I don't know that I can't. I was wondering if anybody here had that answer or any info on the subject. I do have a can of spray foam from HD to try, my concern is that it will go on and hold well when applied and cured but will later release.