Using a Paint Sprayer
There are many variations of sprayers, so you should carefully check the manufacturer’s safety and operation instructions for the type you intend to use. Whether you are using a powerful compressed-air sprayer on a room or an aerosol can on a radiator, the aim is to build up several thin coats of paint. Spraying is a messy job, so sprayers are most useful in rooms empty of furniture and floor coverings, or for exteriors. When spraying paint you should always wear a mask and goggles, and any other specified safety equipment.
Pour paint into the sprayer reservoir (Image 1). Normal latex paint diluted with 10 percent water, or paint designed for spraying is used.
Assemble the sprayer following the manufacturer's instructions (Image 2).
Try spraying on a sheet of scrap paper or similar. Adjust the flow until you can achieve a fairly even coat with no drips. Turn knob to adjust flow (Image 3).
Spray back and forth over the surface. Apply a thin coat, allow to dry, then add more coats until you achieve good coverage (Image 4).