Windshield Repair St. Louis

Windshield Treatments to prevent rock chips

A few times a year I will do a rock chip repair on a windshield that has a sticker on it that says “Diamond-Fusion USA treated glass”, This product is supposed to make the surface of your windshield stronger. The idea behind it is to make rocks skip off your windshield instead of cracking it. My question is then why am I doing windshield repairs on these treated windshields?

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