![]() Check with your local inspection station or garage to see what the regulations are in your area.If you have a chip or crack in your windshield and are considering using an automotive glass repair kit to fix it, it’s best to first get a professional’s opinion on these DIY methods and their effectiveness. Keep in mind that, while it may be possible to repair a chip just about anywhere on the glass, if the chip is right in your line of sight, your car may be fail a state inspection, whether it’s been repaired or not. I’ve used this Permatex kit several times on different vehicles, and while the results largely depend on the severity of the chip, none of them have developed into a crack. ![]() This rapid heating in one area causes the glass to expand slightly, which creates tension and can create a crack that can span the width of the windshield in seconds. ![]() It does this quickly and unevenly, from the bottom of the glass upward. As temperatures drop and frost settles on your windshield, you probably turn on your car’s defroster to heat the windshield. And if the temperature then drops below freezing, that water expands, applying pressure inside the chip and forming a crack. Moisture from rain or condensation can enter the tiny void created by a crack or chip. A sudden, hard bump can load your car’s chassis, applying stress unevenly, twisting or flexing the windshield slightly. However, once it has been compromised, it can easily and quickly crack, usually via one of three ways. Done correctly, you can repair a ding in less than an hour and prevent a crack from forming-and you can find the Permatex Windshield Repair Kit for less than $20.Īuto glass is incredibly strong, able to withstand significant stresses both from impacts and tension. It’s especially important to repair chips quickly heading into the winter months, when freezing moisture and temperature changes can turn a minor chip into a windshield-spanning crack in seconds. Why It’s ImportantĪ chipped windshield can turn into an expensive replacement if you don't take care of it right away. This prevents them from moving independently, which is what causes a chip to turn into a crack. The second, and perhaps more important, is that it locks the glass on both sides of the crack together. The first is that the resin replaces the air in the crack, which improves the optical clarity, making the chip less visible. The kit accomplishes two things by filling the crack. The Permatex Windshield Repair Kit, and others like it, uses a UV (Ultra Violet) resin to fill the tiny voids created in that chipped glass. ![]() These chips start at a pinpoint where the rock contacts the glass but can reach through the thickness of the glass, expanding out in a conical shape. Bullseye chips often occur when rocks or debris are kicked up by traffic and strike your windshield. ![]()
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