Kilz on the ceiling

My guess would be that you were either too generous with the Kilz making that area smoother than the rest so it "looks" to have a shine, or you were too stingy with the finish paint which resulted in the Kilz showing through.

Repaint for consistent (or feather out over larger area so it is not as noticeable) texture, or for better (2nd coat) coverage.

DaveW writes

If you're going to use Kil-Z or Bin, or similar product as an undercoat, expect to have the repainted area look noticeable different (either "shiny" or darker than the surrounding area). I found this out the hard way and was later roundly berated by some friends who paint professionally.

You rough up the area you used the Kil-Z on, debriding enough to wear off the topcoat, then re-undercoat with regular primer, feathering out.

In the case of the OP's problem, a popcorn ceiling, I'd suggest debriding gently with a stiff nylon, or perhaps a brass or bronze wire brush. Steel wire's too stiff, IMO.

Best,

Marc

Once upon a time, my son decided to make a grilled cheese sandwich. He put the butter in the pan and put it on hi and left it. Suddenly the kitchen was quite bright from the resulting flame. The walls were wallpapered and the smoke film just washed off. No so with the ceiling. I sprayed Kilz on the ceiling and did nothing else. I didn't even finish painting the ceiling as it was a perfect match. I only painted above the stove and started into the kitchen and dining room. I refilled the sprayer and looked at the paint job already done. I could not tell where I painted and where I didn't. The Kilz gave a quite satisfactory finish and it still looks good after about 10 years. And we all lived hapily ever after. (He never made another grilled cheese sandwich)

-- Mike D.

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Here is what happened, the Kilz has sealed substrate. Even if you use a cheap vinyl latex paints, the vinyl will not be absorbed into the texture or wallboard and it will have the look you describe.

The cure is to use kilz (or other similar products) from an spray can and apply a light coat (only enough to block the stain). If you use a brush or a roller to apply the kilz from a can, what you describe is a common problem that occurs.

Your cure is to prime the entire ceiling and to then repaint the ceiling. This will give you a nice even look all over.

J.P.