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How to Clean Plastic Skylights

Adding skylights is a way to improve the light quality in a home without compromising on energy efficiency or privacy. Natural lighting adds to the overall value and aesthetics of contemporary homes. Skylights require a cleaning twice a year for maximum usability and to protect the surface from scratch damage. The outer surface will need to be accessed from the roof, so safety is a priority with this do-it-yourself cleaning project.


Cleaning the Inside


Step 1

Remove any dust webs from around the skylight using a broom.  Place a dropcloth beneath the skylight and keep it in place until both the interior and exterior are cleaned.

Attach a rag to the end of the broom using duct tape. 


Step 2

Apply a generous amount of glass cleaner to the rag.  Wipe the skylight with the rag.

Use a long-handled squeegee to wipe the skylight if it is a flat panel. 


Step 3

Dry the skylight using a clean rag.  Repeat this cleaning procedure every six months to keep the skylight clean.


Cleaning the Outside


Step 1

Add 1/4 cup of liquid detergent to a bucket and take it up to the outer skylight surface using a sturdy ladder.  Add water to the soap with a garden hose.


Step 2

Hose down the skylight with clear water.  Spray on a small amount of citrus based cleaner if there is bird excrement or tree sap present.


Step 3

Clean the skylight by scrubbing the surface with the soapy water and sponge.  Rinse with the garden hose and allow the surface to air dry.


Step 4

Apply a layer of automotive wax to the skylight and buff with a clean rag.  This will protect the surface from scratches and weathering, according to HowtoCleanAnythingcom.

Things You Will Need

  • Safety glasses
  • Broom
  • Rags
  • Duct tape
  • Glass cleaner
  • Long-handled squeegee (if needed)
  • Liquid detergent
  • Bucket
  • Garden hose
  • Ladder
  • Citrus cleaner
  • Scrub sponge
  • Automotive wax

Photo Credits

  • Jupiterimages/Photos.com/Getty Images