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How to Clean Roof Skylights

How to Clean Plastic Skylights

Skylights can make a room look bright and cheery. The lights can add more light while reserving energy as well as privacy. Many skylights are made with plastic, which must be cleaned to protect the skylight from scratches. You will have to use a ladder to reach the skylights.

How to Clean Plastic Skylights


Materials Needed



  • Duster

  • Tarp

  • Glass cleaner

  • Broom

  • Clean cloths

  • Tape

  • Bucket

  • Mild liquid dish soap

  • Ladder

  • Garden hose

  • Car wax



  1. Clean the inside of the skylights first. The outside should be cleaned last. Use a duster to remove any dust and debris from the outside of the skylight. Make sure a tarp is over the floor to catch the dust. Leave the tarp there until the inside and outside of the skylight is cleaned. Go over the skylight as many times as possible to remove the dust.

  2. Lightly coat the duster with glass cleaner. Clean the inside of the skylight with the duster and glass cleaner. Take a broom and wrap a cloth around the end of it. Use tape to secure the cloth to the broom. Dry the skylight with the cloth and broom. Allow the skylight to completely dry.

  3. Fill a bucket with warm water and pour ¼ cup of mild liquid dish soap in the bucket. Climb a ladder with the bucket to reach the skylight on the roof.

  4. Clean the skylight with a cloth and the cleaning solution. Scrub the outside of the light until all of the dirt is removed. Take the bucket and climb down the ladder.

  5. Turn on the garden hose and rinse the skylight. Allow the skylight to completely dry. Use a clean cloth to apply car wax to the outside of the light. The car wax will provide a protective layer and protect it from scratches.