Sheen depends on the room’s use and the quality of the drywall finish. Flat hides imperfections best but is not washable — appropriate for formal rooms and ceilings. Eggshell is the most versatile choice for Utah living rooms, hallways, and bedrooms — washable enough for daily life, forgiving enough for standard drywall finish. Satin is recommended for high-traffic areas, kids’ rooms, and kitchen walls. Semi-gloss is the standard for all trim, doors, and window casings. Bathrooms benefit from satin or semi-gloss on walls due to moisture and cleaning frequency. High-gloss is reserved for cabinetry and millwork accent applications.