Do you sand between coats of semi-gloss paint?

Yes, you should sand between coats of semi-gloss paint for the smoothest, most professional and durable result, especially on trim, doors, and cabinets where the finish is highly visible. Semi-gloss paint dries to a hard, slick, non-porous surface, and light sanding between coats serves two important purposes. First, it removes minor imperfections like dust nibs, drips, brush marks, and bubbles that may have dried into the previous coat, which are much more noticeable in a shiny finish. Second, it creates a slightly roughened texture that helps the next coat adhere better, since glossy surfaces are naturally less grippy. The process is simple. After the first coat is fully dry according to the manufacturer's recommended drying time, lightly sand with fine grit sandpaper, such as 220 to 320 grit, using gentle hand pressure. You are not trying to remove the paint, just scuff the sheen and smooth the surface. Then wipe away all sanding dust thoroughly with a tack cloth or damp cloth before applying the next coat. Skipping sanding can result in poor adhesion, peeling, and a rough, uneven finish that highlights flaws.