If the exterior wall is painted, it should be waterproof and sun-proof in addition to color. Exterior wall coatings are generally more expensive than indoor ones. The first pass should be heavy, and brush it at least twice. Of course, tiles should be the first choice in the kitchen. Kitchen tiles are easy to remove oil stains, and their service life is much longer than latex paint. There are also tiles that are much more environmentally friendly than latex paint, with no odor and no formaldehyde.