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Old 10-30-2010, 05:15 PM   #1
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Primer


Good evening,

What is the purpose of priming before painting interior rooms?

Should surfaces that have been painted before be primed?

Should surfaces that were covered with wallpaper be primed?

Are there quality differences between different primers? What is a good brand?

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Old 10-30-2010, 05:29 PM   #2
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The main purposes of priming is to create a bridge between uncomplimentary coatings and to promote adhesion. SOme people believe priming also aids in coverage and texture, but I personally don't put much stock in that.

You DEFINITELY want to prime after removing wall paper.

There are seemingly as many varieties of primer as there are paints. Everyone has their favorites. General rule of thumb is that quality paint brands often have quality primers too.

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Old 10-31-2010, 04:21 AM   #3
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Originally Posted by Windows View Post
The main purposes of priming is to create a bridge between uncomplimentary coatings and to promote adhesion. SOme people believe priming also aids in coverage and texture, but I personally don't put much stock in that.

You DEFINITELY want to prime after removing wall paper.

There are seemingly as many varieties of primer as there are paints. Everyone has their favorites. General rule of thumb is that quality paint brands often have quality primers too.
There is the answer to those questions!
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Old 10-31-2010, 08:47 AM   #4
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I think there is a general guideline that goes something like this: you prime new materials but do not prime painted surfaces. So you would prime new plaster, or new wood - but not a painted wall.

You paint over a painted wall, most times. Of course there are exceptions but those are the main ideas.

Primers are loaded with inorganic fillers in order to provide a uniform surface upon which to apply a paint. Paints on the other hand have more pigments and resin and are intended to sit on top of a smooth surface.
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Old 11-01-2010, 03:29 PM   #5
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Originally Posted by chrisn View Post
There is the answer to those questions!
LOL..
Paint without primer...the answer will soon be obvious
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