Can You Seal an Old Porcelain Sink?

kathleen williams
Bronze Feedback Medal for All Time! 147 Feedbacks

March 28, 20100 found this helpful

Clean the porcelain surface thoroughly. Depending on what you are refinishing, you may need to remove some hardware. You should take off anything removable, such as bath fixtures or knobs. Cover the area with plastic tarp and protect things on the surface not made of porcelain with plastic.

Step 2 Protect yourself with a respirator and goggles. You should wear long sleeves and rubber gloves.

Step 3 Brush on hydrofluoric acid with a scrub brush. Be cautious when using this substances; it is corrosive. Coat the porcelain areas. The acid will eat away the old finish.

Step 4 Use a paint sprayer to apply porcelain primer. Spray in a thin, even coat to avoid drips and cover the porcelain completely. Let the primer dry. It should take around 30 minutes; follow the instructions on the primer you've purchased.

Step 5 Use the paint sprayer and cover the surface with a topcoat of paint and high-gloss polyurethane. Let the paint dry for several days before reattaching the hardware. Good luck.

shirley felts

March 29, 20100 found this helpful

Thanks! Sounds like a job, but I have to try.