Fix mold on ceiling
OP: I took a look at the pics you provided.
This is just my $0.02
First, has the problem been solved that created the stains?
Is/was there a leak in the roof?
Or it is possible that the ceiling is insulated terribly and the stains are a result of hot moist air meeting a cold ceiling? When hot and cold air meet, moisture is the result. Like a cold can of beer on a warm summer day...
Edit: Considering you location, this might not be an issue... However, I did not think of that at first.
After all that has been addressed, try this....
Kill the mold with bleach water. Prime the area to be painted with a shelac based primer (one or two coats). Shelac primer can be purchased in a spray can. It is pretty stinky stuff however.
Paint the area after the primer dries (1 or two coats, whatever is necessary).
That should seal those stains.
But if there are underlying issues, they will return.
Just my humble opinion here. Take it or leave it.
Last edited by Beanfacekilla; 01-30-2012 at 05:51 PM.