My drywall was wet before due to a leak. It has a stain mark. But after 5 coats of white paint from Behr brand and Kilz primer, the yellow stain is still bleeding thru

enter image description here

In the past, I remember I had to scrape off the paper and put new mud/sand again. Then prime, paint.

Now it is all done already with texture and paint. Is there a better way to fix this?

I am thinking about getting the white color from Sherwin Williams but I am not sure if it does any difference.

  • are you confident the spot is dry and no longer impacted? One of those issues where you are sure it is resolved, but it isn't? Just worth mentioning.
    – noybman
    Commented Jan 30, 2020 at 5:31
  • @noybman Yes the roof leak has been fixed and other side of drywall open to monitor for 2 weeks. So unless the old moisture is still there...
    – HP.
    Commented Jan 30, 2020 at 5:33
  • I would presume a heavier quality primer & paint could work but its definitely not certain. Killz has worked for me, and not worked for me. I've had inconsistent results the few times I had to cover a stain.
    – noybman
    Commented Jan 30, 2020 at 5:37
  • @noybman I had this happened 2 times before. One was not a leak but some stain in kitchen ceiling probably due to old drywall. That was so stubborn that I had to rip the paper and re-mudded it.
    – HP.
    Commented Jan 30, 2020 at 5:39
  • There is a barrier paint available, but I have also used a white craft type glue which dries clear with success.
    – Solar Mike
    Commented Jan 30, 2020 at 5:45

1 Answer 1


Fortunately there are not many things that are soluble in both oil and water.

If it's a water stain use an oil based undercoat, or a shellac based sealer.

If it's an oil, grease, or wax, stain use a water based undercoat.

Use two coats of undercoat to get a good seal.

  • 2
    Shellac base gets my vote, after my grandfather passed we tried painting his room (heavy smoker) to make a long story short after using a shellac based primer sealer the tar quit bleeding through. Zinsser has a really good one but it is ~45$ per gallon.
    – Ed Beal
    Commented Jan 30, 2020 at 14:39
  • 1
    +1 for Shellac. Absolutely you need the Zinsser shellac, I would then give it two coats of a good BONDING primer, then paint.
    – Alaska Man
    Commented Jan 30, 2020 at 17:36
  • Indeed that was the stuff I was thinking of.
    – Jasen
    Commented Jan 30, 2020 at 20:06

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.