Do you have to prime when putting semi-gloss on top of previous paint that is also semi-gloss?
Question:
Answers:
No, unless previous paint was oil based and this is water based. And no, if you are not putting a light color over a dark one. You would have to if you were say painting white over red. A primer basically helps the paint to cover better and go on better and is cheaper than having to put 3 or 4 coats of paint on.
It depends on how dark the paint is already on your walls. Priming is always best, tho.
only if the old semi-gloss is oil based and the new is latex. If you're not sure, put one coat of Kilz or Zinsser over the old semi-gloss.
easy no you do not
a bonding primer would be a good idea just to be on the safe side
ALWAYS ALWAYS ALWAYS use primer between coats. Use "KILZ"
You have to only if you are doing a drastic color change. But semi-gloss can be a bit drippy, so it's a good idea anyway.
No, you don't have to prime, but you should clean and sand the surfaces (not to take the paint off, but to roughen the surface) to make sure that the paint sticks.
No, all you have to do is sand it to smooth the surface.
No, but you should lighly sand it or remove the sheen.
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