- Road debris: This is the most common cause of windshield pitting. Small rocks, pebbles, sand, and other materials that are kicked up by other vehicles on the road can strike the windshield and cause tiny pits. These pits can gradually spread over time, especially if the windshield is exposed to more impacts from road debris.
- Weather conditions: Extreme temperatures, especially during winter, can cause the glass to expand and contract rapidly, leading to stress on the surface of the windshield. This stress can cause small pits to form, especially if the windshield is already weakened due to age or damage.
- Chemicals: Acidic rain, tree sap, and bird droppings can all cause chemical reactions with the glass surface that can result in pitting. These substances can cause significant damage to the glass if left on the windshield for too long. Acidic rain can be especially damaging if the car is parked in an area with high levels of air pollution.
- Improper cleaning: Using abrasive cleaners or scrubbing the windshield too hard can scratch the glass surface and create pits. It is important to use proper cleaning methods and products to avoid damaging the windshield. It is also important to use a soft cloth or sponge to avoid scratching the glass.
- Age: Over time, exposure to the elements can weaken the glass and make it more susceptible to pitting. This is especially true if the windshield has not been properly maintained or has been subjected to extreme weather conditions or frequent impacts from road debris. Regular cleaning and maintenance can help extend the life of the windshield and prevent pitting. If the windshield is already weakened due to age, it may be more prone to pitting even with minimal impact from road debris or other factors.
You have likely heard someone use the term ‘windshield pitting’ in the past. Perhaps you’re unclear of its meaning. Essentially, when you’re driving down the road and the sun hits the windshield just right and blinds you, it’s likely caused by windshield pitting. Pitting is a natural form of wear on an auto windshield. It is often caused by sand, dust, or debris from the road. Over time, the glass will wear down in patches. These patches catch the light just so, causing temporary blindness or sunspots.
If you happen to drive along the highway each day, then windshield pitting is likely occurring faster than you think. With more vehicles on the road, the likelihood of sand, dirt, and debris scratching away at the glass is increased tenfold.
Furthermore, the more pits your windshield has, the less secure the glass becomes. Eventually, it becomes a safety hazard.
How to Handle Windshield Pitting
Unfortunately, there is no surefire repair solution for windshield pitting or worn glass. Your best option, and perhaps the only solution, is to replace the entire windshield. If the pits are minor or just starting to form, the glass can be smoothed over. It’s not a guaranteed fix, though, so this case may require replacement.
If you plan on searching for DIY methods, try not to get your hopes up too high. There are videos and blogs telling drivers that polishing the glass or filling in the pits will resolve the issue. This information is incorrect and could pose an additional hazard.
If you experience windshield pitting, call an auto glass repair service.