About to do some welding... I understand that underseal burns well. How far back, away from where I'm welding, should I remove it?
I tend to strip it back for an inch or two - hot air gun and a scraper ... YMMV
Better to remove it all IMHO - tis awful stuff ...
And Dippy is 100% correct, it lurks in seams and such - don't even get me started on LR's period seam sealer - the fumes of that sh&t are really quite unpleasant IME