5. Rent an airless paint sprayer at a home improvement store (figure D). The sprayer works by drawing paint out of a bucket and forcing it through a nozzle. Follow the directions for use that come with the sprayer.6. When using a sprayer, it's important to strain the paint first to make sure it's smooth and free from any lumps (figure E).
7. Cover any ceiling light fixtures with newspaper and you're ready to spray.
8. Hold the nozzle so it's parallel to the wall. Lock your wrist, hold the nozzle about 8 to 10 inches from the wall, and apply the paint in a smooth, consistent motion. Work with a small area at a time, and use a crisscross pattern for full, even coverage.
9. When working near a wall, have a friend hold a large paint shield to avoid getting spray on the wall (figure F).