>I'm currently trying the SW suggested acetic acid treatment on joint
compound on a c 20-30 year old ceiling application. I applied with a spray
bottle. I'm anxious to see if it is firm and solid when dry.>
Tom - I'm interested in how you made out with that? My guess is that the
vinegar didn't work on the vinyl-composition joint compound. Was the problem
efflorescence on a joint-compound-skimmed plaster wall?
John Mascaro