Texture Ceiling: Primer needed?
I'm planning on painting a textured ceiling for the first time. It isn't a "popcorn", acoustic ceiling like one found in motel rooms, but it is the type that sheetrockers apply so as to cover up drywall joints.
The paint dealer told me that I would need a primer coat if the ceiling was not sealed before. Is there any way that I can tell if it was sealed? Do sheetrockers do this as a matter of course? Note: I can see numerous "dark spots" when I look up at the ceiling. Is that a sign that it was NOT sealed?
I do have primer (Zinsser). Any harm in applying it anyway?
I was present when I had my attic finished, and those sheetrockers used a "titanium paint" That finish is very similar to what I am painting, if that helps.