Just use a deglosser then prime/paint or paint/paint. A better paint may
cover in one coat, no primer. Depending on color change. I always had good
results with Benjamin Moor and Pittsburgh paint, their premium lines.
"Steve" wrote in message
...
I am painting some interior bedrooms and such. The previous home owners
used gloss paint on the walls and in one room the same gloss paint on the
ceiling. I'm trying to decide a couple of things:

1) There are deglossers/cleaners available that apply and wipe off as prep
for the new paint. Any reason to not use one of these vs sanding? Are
there any particular kinds or chemical makeup that do the best job of
this? The deglossers seems easy to use (with proper ventilation) and
sanding seems like a messy workload. I have some friends who've used the
deglossers and they were pleased.

2) The colors in the rooms are a bit darker so I'll need two coats of new
paint to cover it. They are nothing extreme, so just average I would say.
My thinking was that if I have to do two coats of paint - why not make
coat #1 a primer/sealer. Similar amount of work and cost so its really no
impact. Are there any pros/cons to 2 coats of paint vs 1 coat
primer/sealer and then 1 coat paint?