Painting the Interior Ceiling.

If the black material turns out to be a solvent based adhesive then a water based primer like Kilz 2 is advisable. If the black stain is water soluble than an oil based primer like original Kilz or Zinsser BIN just in the stained areas would be better (with loads of ventilation).  Basically you want to use a stain blocking primer that won't dissolve the stain. 

Thanks JR. Valuable advice.

When we picked up our 2019 179 in July 2018 the front and back ends of the ceiling (? or are they the walls) same material as the ceiling just a different color, a light brown and the ceiling was an off white.  The first mod was to paint those light brown walls to an off white (a little creamier color than the ceiling).  My wife just used a latex paint and used 2 coats.  No special prep.  There was no black residue bleeding into the areas.  We have also painted all the walls and cabinetry in the slide out with the same paint with no special prepping the area.  Have had no problems with the results except it makes the interior feel bigger.  

Has any member painted there interior ceiling? If so how did you prep and any suggestions for type of paint. My ceiling at the forward 4 or 5 cross supports is bleeding a black residue that appears to be caused by heat on the exterior of the Pod. It does not clean well and reappears after a week or so. Appreciate comments.