OK, I thought this would be easy. There was some black soot near a ceiling register from an oil furnace. So, I got on a ladder with a damp sponge, thinking I could just wipe it off.
Well, it didn¹t quite work our that way. The ceiling is smooth painted sheetrock, and trying to wipe off the soot just spread it out and made it worse. I then tried cleaners like Fantastic, they didn¹t do much. So now I have an area with waves of grey in an otherwise white ceiling.
So, does anyone have any ideas of how to clean up this mess, short of repainting the ceiling?
Thanks for your help.