Check the terms of your insurance and repair contract. The cost of repair or replacement of a total varies significantly depending on your location, your insurance and the type of windscreen. A professional repair is more costly than a home kit, but the result can be considerably less visible.
In Florida, Arizona, Kentucky, South Carolina and Massachusetts, a comprehensive auto insurance will cover the full cost of repair or replacement. If you do not have insurance that covers your windshield, you might end up paying the full price of the repair.
Looking damage near the edge of the windshield
The cracks or fissures on the edge can compromise the structure of the windshield. Even after repair this damage could be a major security issue. Rather than repair the windshield, you should have it replaced.
Consider the line of sight of the driver
The damage produced directly in the line of vision of the driver can interfere with driving the car, even after repair. The most dangerous area is a section of glass 30 cm (12 inches) wide, centered behind the wheel and extending the height of the windshield wipers. If this area is damaged, you should replace the windshield. You can decide to make the repair and then judge visibility.
In this area, two points separated by a distance of 10 cm (4 inches) damage indicate the need for replacement. This pattern of damage can create a blind spot for the driver, thus obscuring the line of sight in both eyes.
Measure the length of the crack. Thanks to modern techniques, most minor cracks to 15 cm (6 inches) can be repaired at home. For longer cracks greater than 46 cm (18 inches), consult a professional first and only repair them on your own if he thinks it is safe. Any crack longer requires a total windshield replacement.
Examines cracks and dents
The damage caused by impacts may or may not be repairable. This depends on their shape and size:
- Fissures circular or semicircular “target rate” should have a diameter less than 2.5 cm (1 inch).
- A “star-shaped break” or a point of impact with short cracks extending outward should have fissures that fit within a circle of 7.5 cm (3 inches) wide.
- Fissures with other forms must fit within a circle of 5 cm (2 inches), not counting the cracks that extend outward.
Check the depth of all damages. The windshields are made of two layers of glass and a layer of plastic between them. If the crack extends beyond the outer layer and the inner plastic, you will have to replace the entire windshield.
The damaged windshield from the inside are rare and even a professional could not be sure how to evaluate them. For security reasons, it is usually best to replace the windshield.