How to Paint Bathroom Vanity Cabinets | Durable Finish Plan

Painting bathroom vanity cabinets requires degreasing, sanding, priming, and two to three coats of enamel paint for a durable finish.

Bathroom cabinets take a beating — soap scum, hairspray, lotion residue, and constant humidity all work against paint. Skip the prep and your new finish will peel within months. Do it right, and the results hold up for years. The job breaks down into four stages: prep, prime, paint, and cure. Here’s the full process for a vanity that looks factory-finished.

Step 1: Remove Doors, Drawers, and Hardware

Painting everything in place guarantees drips, missed spots, and hinges glued shut with paint. Start by taking the doors and drawers completely off the cabinet. Unscrew every hinge, knob, and pull, and store the hardware in a labeled bag so nothing gets lost.

Label each door and drawer with a piece of painter’s tape indicating its location — top left, bottom right, and so on. This saves real time at reassembly, since cabinet doors rarely line up the same way twice. Sherwin-Williams, Benjamin Moore, and Lowe’s all give the same first instruction: remove everything that moves before you touch a brush.

Step 2: Clean, Sand, and Mask the Surface

The #1 cause of peeling paint in bathrooms is grease and hairspray residue left on the surface. Wash every surface with water and a degreasing dish soap, paying extra attention to areas around handles and the bottom edges of doors where lotion collects. Rinse twice with clean water and let everything dry completely before sanding.

Benjamin Moore recommends starting with a 150-grit sandpaper on finished cabinets, then following up with 220-grit for a light final pass — always sand with the grain. Lowe’s suggests sanding until the finish has a dull, flat appearance. The goal is to rough up the surface just enough for primer to grip.

After sanding, wipe off the dust with a tack cloth, then mask the surrounding areas. Use painter’s tape around the walls, floor, countertop, and the underside of the vanity top to prevent overspray and edge bleed.

Step 3: Prime for Adhesion in a Humid Room

Primer is what makes paint stick to a slick cabinet finish — skip it and your topcoat will blister in the bathroom’s humidity. Lowe’s recommends a shellac or oil-based primer for bathroom cabinets, since these bond aggressively to finished wood. Benjamin Moore specifies its STIX® Waterborne Bonding Primer for vanity cabinets, and Sherwin-Williams suggests testing Extreme Bond Primer on a small area first to confirm adhesion before painting the whole unit.

Apply one even coat of primer over all sanded surfaces, then check the dry time on your specific product. Sherwin-Williams says its primer can dry in 2 to 3 hours; Ace Hardware notes some formulas dry in as little as 1 hour. When the primer feels dry to the touch and no longer tacky, you’re ready for paint.

Step 4: Apply the Paint and Let It Cure Fully

Use a durable enamel paint designed for cabinets. Sherwin-Williams recommends its Emerald Urethane Trim Enamel, and Benjamin Moore points to its ADVANCE® Interior Paint — both self-level and cure to a hard, washable film that handles bathroom moisture.

Apply the first thin coat with a brush for edges and a roller for flat panels. Benjamin Moore says to apply a first coat, let it dry, then add a second coat. Sherwin-Williams goes further, recommending one coat plus two additional coats for surfaces that see daily use.

Here’s where patience matters most. Sherwin-Williams says the painted vanity should dry overnight, but dry-to-touch is not the same as cured. Oil-based paints — which Lowe’s says handle moist bathrooms best — dry more slowly than water-based options. Give the paint a full week before you rehang the doors and put the hardware back, and avoid setting wet items on the surface during that window. Reinstalling hardware before the paint cures is one of the most common ways people ruin a fresh finish.

The entire project takes a weekend of active work plus a week of curing. If your current vanity is structurally sound but outdated, a fresh coat of paint beats a full replacement on cost and effort. That said, painting only makes sense when the cabinet itself is in good shape — warped doors or water-damaged particleboard won’t be saved by a new finish. If you’re deciding between refinishing and replacing, our roundup of the best bathroom vanity cabinets covers solid-wood options that outlast any painted particleboard.