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How to Whiten Windows

Updated February 21, 2017

There are many reasons why you might want to whiten your windows or make them opaque. You might want more privacy in a bathroom or bedroom window, or you might want to diffuse the light for a greenhouse. No matter what your reason, whitening windows is possible and requires a few simple but key steps. Purchase etching cream at a craft, hardware or paint-supply store.

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Clean the glass thoroughly with soap and water. Scrub the glass with the rough side of a sponge and dry the glass thoroughly with a soft cloth. Don't use paper towels, as they will leave behind small pieces of paper.

Use painter's tape to cover any areas you don't want to whiten. Tape off the window frame.

Put on gloves and goggles to protect yourself from the etching cream, which has hydrofluoric acid in it that can irritate your eyes and skin.

Dip a foam brush into the etching cream and apply a thick layer to the glass. Work the layer so that it is even across the entire window.

Let the etching cream sit for several minutes according to the manufacturer's instructions. This could be anywhere from 15 to 30 minutes.

Wipe off the etching cream from the window with paper towels.

Wash the window with washing soda and water. This will neutralise the paste.

Remove the painter's tape from the window and wash the window with window cleaner. Let the window dry completely.

Tip

Put the paper towels with etching cream on them into a plastic bag before throwing them away.

Warning

Never leave the acid unattended as it can be toxic for children and pets.

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Things You'll Need

  • Liquid dish soap
  • Sponge
  • Soft cloth
  • Painter's tape
  • Gloves
  • Goggles
  • Foam brush
  • Etching cream
  • Paper towels
  • Washing soda
  • Window cleaner

About the Author

Kaye Wagner has been working in the fields of journalism and public relations since 2006 and is a recipient of a National Hearst Award. She is particularly interested in home-and-garden projects, as well as beauty and fashion writing. An avid traveler, she also writes travel reviews and guides. Wagner earned a Bachelor of Arts in journalism from Brigham Young University.

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