How to Protect a Bathroom Cabinet From Water

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A wooden cabinet in a bathroom is subjected to heavy moisture in the air that can damage the wood surface over time. Most cabinets come with a protective finish of paint or varnish, which may not be enough protection for a bathroom environment. Coating the piece in polyurethane will add protection without obscuring the color of the surface. Although oil-based polyurethane has a slower drying time than water-based products, it provides better protection.

Things You'll Need

  • Screwdriver
  • Old newspapers
  • Vibrating sander
  • Medium and fine sandpaper
  • Tack cloths
  • Finishing paintbrushes
  • Rags
  • Oil-based polyurethane
  • Disassemble the cabinet, taking off all hinges and hardware with your screwdriver. Lay out the pieces on old newspapers.

  • Set up your sander with medium-grit sandpaper. Run the sander over the surface cabinet parts, dulling each section to take off any gloss or grime.

  • Repeat the process with fine sandpaper to get the piece smooth and clean. Wipe up the dust with a tack cloth.

  • Brush a light, smooth coat of oil-based polyurethane on the cabinet sections, using a refinishing paintbrush. Keep the polyurethane thin and smooth, then let it set for 24 hours.

  • Sand the dried polyurethane lightly by hand with the fine sandpaper, just enough to make the surface dull and flat. Wipe up the dust with the tack cloth.

  • Apply a second layer of polyurethane. Let it set for 24 hours, hand-sand it, then brush on a third layer. Let the third layer set for 48 hours. Put the cabinet back together.

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References

  • Photo Credit Jupiterimages/Comstock/Getty Images
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