A Guide To Sand Pitted Windshields
Sand and small debris on the road can be just as damaging to your windshield as larger rocks; the exception is that the damage is small and cumulative. Eventually, small debris can pit your window, a process called sandblasting. The following guide can help you better understand sandblasting and what you can do about it.
Cause
Although it can happen anywhere, sandblasting is a much bigger problem for those that frequently drive on dirt roads or that live in areas that sand the roads during winter ice storms. The sand and other small debris constantly hits the window, where it eventually wears small pits in the glass. Following closely behind other cars just makes the problem worse, since the leading car's tires will kick even more debris into the air. In areas prone to windstorms, especially if there is a lot of loose dirt, sandblasting can even occur when the car is parked.
Damage
Early damage is negligible and easy to overlook, but it worsens over time. Eventually the window will look hazy or like it is covered in small pits. This will then impact visibility through your windshield. It can be especially bad on bright, sunny days or when headlights hit the window, since you will end up with a lot of glare from the small pits covering the windshield. Further, larger cracks become more likely, since water can settle in these pits where it will then freeze, expand, and crack the window.
Prevention
The best way to avoid sandblasting is to always leave several car lengths of space between you and the car in front of you, especially if you are driving on dirt roads or if there is a lot of road grit. Minimizing travel on dirt roads will also minimize sand pitting on your windshield. If you live in an area with a lot of blowing dust and dirt, consider parking in a garage or using a car cover. Further, never use your windshield wipers without first spraying fluid on your window since this can also lead to sand and grit damage on the glass.
Repair
If the damage is minor and there are no deep pits, an auto glass service may be able to polish out the pits and restore the glass. Badly pitted and sandblasted windows will require replacement. Once you have the new windshield installed, follow the tips above to prevent sandblast damage from occurring again.
Contact an auto glass replacement service for more help with your pitted windshield.
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