Painting - Painting a knockdown textured ceiling

Okay, I've read thru a lot of posts, but figured it would be easier to post my specific questions.

I am finishing my basement. My drywall finisher is going to apply a knockdown finish to my new ceiling.

1. Do you need to paint a knockdown finish?
2. Do you need to prime a knockdown finish? If so, do you just use a product that says something to the affect of "new drywall primer and sealer"?
3. What kind of paint should be applied? My walls will be eggshell. Ceiling paint is typically flat. I've read on some website where people recommend semi-gloss for textured ceilings because it will bring out the depth and it is better for cleaning. Not sure why I would be cleaning my ceilings. I've read flat is easier to apply though.
4. What nap roller should be used? I've read anywhere from 3/8 to 1/2 to 3/4.

Any other random advice would be appreciated.

Thanks.

#1 Usually, sometimes the drywall will be painted before texture which makes the texture look finished. It is better to paint the texture as unpainted texture is water soluable.

#2 It is better to prime the ceiling but 2 coats of paint will be ok. It is possible to apply 1 coat of flat paint and call it done [but the paint must be applied heavy and consistent - not always easy to do]

#3 Generally flat latex, although some prefer satin. Flat will help hide any defects while an enamel will highlight them.

#4 It depends on how heavy the texture is but 3/4" is preferred - holds more paint = less dipping the roller in the bucket :thumbup:

Eggshell/satin is often hard to get a good job on new drywall. The tendancy is to prime and then apply 1 coat of finish. Satin usually needs a better base to look good. You may need to apply 2 coats of finish over the primer.

Hope you enjoy your new basement.