Artistic Note Decorating

Learning experience! Ceilings were painted by previous owner. But there was still some bleed through of ni****ne stains. Naively, we thought one more coat would finish the job. Eeeennn (buzzer noise) wrong answer. Everything we painted with latex ceiling white, looked the same as it did before. Turns out ni****ne is water soluble and will bleed through any water based paint. So, we purchased Zinsser Bin shellac based primer to block any potential bleed through. Most rooms have four fresh coats of paint now, including ceilings. One coat of Zinsser Bin shellac based primer, one coat of Zinsser 1*2*3 water based primer and 2 finish coats. The results are dramatic!