by Vicki
How do I remove brown water stains from drywall?
How do I remove brown water stains from a drywall ceiling caused by a roof leak?
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Hi Vicki, your best bet is a stain blocking primer such as Bin by Zinser. I would do a good first coat and wait several days to make sure the stain doesn't come through before putting on your paint. It may take a couple of coats of the primer.
Killz is also good. Cover the area and an inch or two beyond. Let dry and paint ceiling whatever color you like.
https://www.todayshomeowner.com/video/how-to-cover-over-a-water-stain-on-a-ceiling/
After a little digging on Google I found this.