I have a question regarding painting some chipped ceilings. I have a really old house, and it's been painted several times before I got it. A couple of rooms in my home have LARGE spots of the ceiling that have chipped, exposing the primer coat, or possibly the first coat ever applied, underneath. I am talking large spots, like 4'x4' areas.
What is the best way to re-paint these? I assume just painting over the whole ceiling, it would still be visible through the paint. Does the whole ceiling need to be scraped and repainted, or do I need to sand down the edges of the chip so that it's smooth and level, then apply the paint?
One of these ceilings is a knock-down stucco texture (It looks like somebody used a trowel to apply texture to the ceiling, then knocked it down), so it may be extremely difficult to repair.