I have soot on the ceiling in my kitchen from burning candles and I would like to paint. What kind of paint do I use and/or do I have to clean this first with a special solvent because it seems to have seeped through the last paint job.
Wash with tri-sodium phosphate (TSP), or similar strong cleanser. This will remove any residue on the surface and some in the pores. Now prime with a stain blocking primer, oil or shellac will work the best. It might take 2 coats of primer. Once primed and dry you can repaint the ceiling.