painting/covering up ceiling stain

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Old 04-09-13, 07:08 PM
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painting/covering up ceiling stain

I primed the room and ceiling, including the stain. While cutting the boarder in, I also put three coats of ceiling paint (Sherwin Williams) over the stain. I can still see the stain. Any ideas?

I believe it's a water stain but may have been the cat.
 
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Old 04-09-13, 07:39 PM
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Latex paints generally will not cover stains. An oil based primer like Kilz original, or better yet, a shellac based primer like B-I-N is probably your best bet to cover hard to hide stains.
 
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Old 04-09-13, 08:22 PM
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Would you reprime the entire ceiling (for uniformity?) or just the spot?
 
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Old 04-09-13, 08:33 PM
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Probably depends on the wall texture and sheen of the final coat of paint. Generally if the light hits something just right you can usually see any touchups that were done... but depending on how you apply the stain blocker, you could probably primer just the area around the stain. If you do it with a brush, prime the spot and then brush out the edges of the primer so that it doesn't leave a ridge... brush the perimeter of the spot until your brush is dry and the primer is completely feathered out in all directions. After it's dry, give it a single coat of your wall/ceiling paint that you will be using, and apply it in the same manner. Then when you roll your final coat you will have 2 coats of paint over that area and you shouldn't be able to clearly see the "spot" that was primered.

You can also use the same technique with a roller, because sometimes it's the brush strokes that you will see, as a different texture. So if you roll (such as with a 3 or 4" line marker roller or hot dog roller) do the same thing, rolling out the edges until the roller is dry... try not to push too hard which would leave roller lines along the edges of your path.
 
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Old 04-10-13, 04:39 AM
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Generally spot priming stains is good enough, just make sure you get the entire stain coated with a solvent based primer. Your ceiling paint will take longer to dry over the primer but it should blend in when dry.
 
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Old 04-10-13, 06:40 AM
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Prime the spot with an oil based sealing primer and then paint the spot again. If you can see the touch up after all is dry, you may need to paint the whole ceiling again.
 
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