Avoid unwanted attention to a nasty stained ceiling in a room by concealing the eyesore with a painting product used by the pros. A stain blocker can conceal just about any kind of stain applied before repainting the ceiling by using an oil base sealer and primer like KILZ. It will block the stain, so it disappears. Apply the blocker and primer first, followed by the finished coat of ceiling paint. Plan to paint the entire ceiling, not just the stained area, for a fresh new appearance.
To block the stain, prime and paint a stained 15-by-20-foot ceiling, a painting contractor will charge $615, which includes the labor and material. You can buy a stain blocker, primer, and paint for $100, do it yourself, and save 84 percent. Like any painting project you’ll probably spend a considerable time preparing the room before applying the blocker, primer, and paint.
