This guide walks you through everything you need to know about using a paint sprayer, from deciding when it’s actually the right tool for the job to mastering the technique for a smooth, even coat.

Wagner has introduced two paint sprayers designed for use indoors as well as outside. The PaintReady Sprayer and PaintReady System both have a patented nozzle that requires no thinning of paint.

A few years ago, when a homeowner mentioned spray paint, they were likely referring to a can—with that little rattling ball—they picked up at a hardware store or home center. But over time, ...