Here is an email I received about a frustrating repeatedly cracking windshield.
My windshield has developed a 1" crack on the INSIDE of the glass. I can feel the crack with my finger on the inside of the windshield but nothing on the outside. The same thing happened when the car was about 3 months old and the dealer changed the windshield for me, assuming that it was a flaw. He said he had never seen that before. Now that it has happened again, I am embarrassed to go back to the dealer. I want to know if there is a logical explanation for this, or if you think that it is another faulty windshield. I can assure you that I do not have random things flying around the inside of the car that would cause an impact crack!
Any comments or suggestions? I would really appreciate it.
Thanks,
Mary
Many people come to my shop and say there windshield is cracked on the inside and ask if the windshield is faulty in their new vehicle.
Here is the best way to tell if your windshield is faulty
or just cracked on the out side by am impact.
The first thing is to double check which side the crack is on. The best way is to use a razor blade straight on the crack at the edge. Check the out side of the windshield first if it catches in the crack at the edge as you scrape across the crack perpendicular if the razor blade catches then the crack is on the out side layer. If it doesn't catch, check the inside the same way. If you can get the razor blade perpendicular (straight on) to the crack at the edge of the windshield on the inside. If it catches on the inside it is an inside crack.
Then check for a tiny speck on the out side within usually within one inch of the edge. It will be the size of a dot from an ink pen usually in the black colored part of the windshield called the frit. If you see this impact point or the razor catches you have been the recipient of the most common an annoying edge crack caused by the tiniest of stones Impacting your windshields edge on the out side.
These frustrated customers are really sure they have a faulty windshield and that they can feel the crack on the inside. They say but I can feel the crack with my finger.
I think it is a trick our minds play on us. You think you can feel the crack when you run your finger on the inside over where you see the crack. You almost never see a crack on the inside of a windshield but it is possible. After checking their windshield with a razor blade and looking for an impact. I can tell them with a good percentage of certainty their windshield has been impacted with a rock on the out side and is not faulty.
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