My 68' Fastback has quite a bit of that black, wavy, spray on bituminous sound deadener in places like the rear quarters & trunk seams, in the wheel houses, and in the passenger cabin around seams etc. Its very sound (no pun intended) and I don't think it needs replacing.
So my questions is what primer and paint can be used over this stuff? There were remnants of factory colour over it...
I've read some sad stories from folks saying you can't really paint over such stuff. Along the lines of thinners / reducers dissolve the sound deadener or the black colour bleeds through etc. Any ideas? Its easier to ask then buy and apply the under sealant on a test panel, wait for it to harden up and try various primers / paints over it, etc.
It would be a big & messy job to remove all that sound deadener / sealer and use a newer (more paint friendly?) product. Or is that the only good option?