Mark P. wrote [snip] I also used vinyl coated ceiling tiles with the intent of cleaning them of the soot caused by six torches going all day. This has not worked out, they are NOT easy to clean.
Try using white vinegar to cut soot and grease, then borax in
very warm to hot water - rinse with baking soda dissolved in
water. Rinsing is important as new soot and dirt seem to cling
worse if there is any (commercial) cleaning solvent left. I used
to drive a cab over truck (big rig) and with the old engines,
especially Detroit Desiels and some of the Cummins the cab was
horrid - this was best to get soot and grease and smoke off
leather and vinyl interior. Also use it in my house - only have
1 torch, but we both smoke. You might want to try the stuff you
use on your hands after working on engines - “Goop” or whatever
brand your auto parts store carries for ground in or stubborn
build up. Kat