How to Polish Pits Out of Windshields

Updated June 29, 2018

Rocks and other flying debris that hit a windshield will make pits or small concave holes in the glass. Repeatedly parking a car under some types of trees enables saps to drip on windshields and form pits over time. Using automobile glass pit polish and a sander fills the holes to the surface level and smooths them for a seamless repair job.

Turn a garden hose on and spray the windshield to rinse any loose debris off the surface.

Squirt car wash soap into a bucket and add water from the garden hose to make a soapy mix.

Dip a car wash sponge into the mix and thoroughly clean the windshield. Spray the car wash off with the garden hose.

Let the windshield dry.

Place a glass-sanding disc on an orbital sander. Press the disc onto the sander so the Velcro adheres to the sander guard.

Squirt auto glass pit polish onto the centre of the sanding disc.

Turn the sander on and place it on the pits in the windshield. Move the sander in a circular motion over the glass pits. The polish will fill the pits so they are not noticeable.

Turn the sander off and feel the pits with a fingertip. Continue using the sander until the surface where the pits were is completely filled with pit polish and level with the rest of the windshield.


If pits are very deep, the windshield will require additional pit polish in that area. Do not use polishing discs for paint or car bodies on a windshield. Use only a glass disc with very fine fibres for car windshields.


Pits in windshields reduce visibility in nighttime driving situations. Oncoming headlights form a dangerous glare in the pits and obstruct a driver's vision.

Things You'll Need

  • Garden hose
  • Car wash soap
  • Car wash sponge
  • Bucket
  • Orbital sander
  • Glass polishing disc
  • Auto glass pit polish
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About the Author

Mary Lougee has been writing for over 10 years. She holds a Bachelor's Degree with a major in Management and a double minor in accounting and computer science. She loves writing about careers for busy families as well as family oriented planning, meals and activities for all ages.