A chip can be repaired. A hairline crack can be stabilized. But once a crack reaches the windshield’s edge or exceeds 6 inches, you’re on borrowed time. Use clear packing tape and gentle driving habits to reach a professional — because the only real way to stop a crack from spreading is to fill it with resin before it grows.
For the majority of drivers, the is:
For a longer crack (up to 6–8 inches), some experienced DIYers use a : how to stop crack in windshield from spreading