How to Paint Baseboards and Trim Like a Pro

Baseboards are the unsung heroes of your home's visual weight. When they are scuffed, yellowing, or chipped, the entire room feels neglected, no matter how clean the walls are. Painting trim is a high-reward, low-cost project that sharpens the lines of your space, provided you are willing to embrace the boredom of preparation. Done well, your trim should look smooth, hard, and free of brush marks. The secret isn't in the paint itself, but in the patience used to sand the profile and the steady hand used to cut in. Treat the prep work as the main event, and the final coat will practically apply itself.

1. Remove dust and oils first. Wipe down all trim with a degreaser or a mixture of water and dish soap to remove dust, hair, and oils. Ensure the trim is completely dry before moving to the next step.
2. Seal edges with precision. Apply painter's tape along the floor and the wall directly above the trim. Use a putty knife to press the edge of the tape firmly against the trim to create a seal that prevents paint bleed.
3. Dull the gloss, create tooth. Lightly sand all trim surfaces using 180-grit sandpaper to dull the existing sheen and create a tooth for the new paint. Wipe away all sanding dust thoroughly with a tack cloth.
4. Lock in uniform coverage. Apply a coat of high-quality oil-based or bonding water-based primer. This creates a uniform surface that stops old stains or dark colors from bleeding through.
5. Cut sharp, clean lines. Use a 2-inch angled sash brush to paint the edges where the trim meets the corners or complex details. Keep a wet edge by painting in manageable sections of about two to three feet.
6. Build flawless final coat. Apply two thin coats of semi-gloss or satin enamel paint, allowing proper drying time between coats. Sand lightly with 220-grit paper between coats for a glass-smooth finish.