How to Repair the Enamel on a Sink Drain That Was Destroyed by Declogger

Cut through any caulking around the perimeter of the sink, using the razorblade. Pull off the caulk with your fingers.

Put on disposable rubber gloves and apply 2 to 3 tablespoons of acetone to a cloth. Wipe all surface of the sink to remove grease and grime.

Sand all surfaces of the sink using a piece of 320-grit sandpaper, just until the surface is rough to the touch. Rinse out the sink to remove all sanding dust, then dry it completely with a clean towel.

Apply painter’s tape to the counter surrounding the sink, to all fixtures and the drain to protect them from the paint. Place dropcloths on the floor and counters and tape them over the walls and backsplashes nearby.

Open a spray can of bonding agent and apply a 1/8-inch layer to all surfaces of the sink using short left-to-right spray strokes. Overlap each stroke by half to ensure full coverage and keep the can at least 6 inches away from the sink surface. The bonding agent prevents the enamel from peeling off later. After applying the bonding agent, wait until it dries completely and doesn't feel sticky.

Open all windows and doors to promote ventilation. Don safety glasses and a respirator. Fill a paint spray gun with acrylic urethane enamel in the desired color.

Spray the sink with a single, light coat of the enamel paint and wait 15 minutes to dry. Apply two more coats of the enamel paint in the same manner, allowing 15 minutes between each coat.

Remove the masking tape from the sink surfaces immediately before the paint fully cures. Wait a minimum of 48 hours before using the sink.