Averaged sized homes that do not require intensive painting can take anywhere from two to three days to spray the house's siding. A professional will first prime all areas of bare wood, metal rust, and hardie board, as well as high-gloss surfaces before spray painting the exterior with two coats of high-quality paint.

Painting your home interior is possible but can be challenging, exhausting, and time-consuming. However, if you are a first-time DIY-er, you may want to consider consulting with some experts first or hiring a team of interior decorators and painters to ensure that everything goes as planned.