How to Stop a Cracked Windshield from Spreading: Expert Tips and Tricks

Driving with a cracked windshield is not only dangerous but also illegal in many states. A small chip or crack can quickly spread across your entire windshield, leading to costly repairs or even a complete replacement. Fortunately, there are several methods you can try to stop or slow the spread of a windshield crack until you can get it professionally repaired.

Use Super Glue or Clear Nail Polish

One quick and easy way to stop a crack from spreading is to apply super glue or clear nail polish to the affected area. This method works best for small, clean cracks. Here’s how to do it:

1. Clean the area around the crack with a lint-free cloth and glass cleaner. Make sure to avoid getting any cleaner inside the crack itself.
2. Apply a small amount of super glue or clear nail polish directly into the crack, being careful not to use too much.
3. Allow the glue or polish to dry completely, which can take up to two hours.

While this method can temporarily stop the crack from spreading, it’s important to note that it’s not a permanent solution. The crack will still need to be professionally repaired or the windshield replaced.

Apply a Windshield Repair Kit

Another option for stopping a cracked windshield is to use a windshield repair kit. These kits are readily available at most auto parts stores and can be a cost-effective way to fix small chips and cracks. Here’s how to use a windshield repair kit:

1. Clean the area around the crack with a lint-free cloth and glass cleaner, avoiding getting any cleaner inside the crack.
2. Follow the instructions included with your specific repair kit, which may involve drilling a small hole in the glass and injecting a special resin.
3. Allow the resin to cure completely, which can take several hours.

While windshield repair kits can be effective for small cracks, it’s important to note that they may not work for larger or more severe damage. If the crack is longer than three inches or extends to the edge of the windshield, a repair kit may not be sufficient, and a full replacement may be necessary.

Avoid Sudden Temperature Changes

Glass expands and contracts with changes in temperature, which can cause a crack to spread. To minimize this risk, try to avoid sudden temperature changes by:

• Parking your car in the shade whenever possible
• Avoiding using your car’s defroster on the highest setting, especially in cold weather
• Allowing your car to gradually adjust to temperature changes before driving

By minimizing sudden temperature changes, you can help prevent the crack from spreading until you can get it repaired.

Schedule Windshield Repair or Replacement

While temporary fixes like super glue, nail polish, and repair kits can help stop a crack from spreading, the best long-term solution is to have your windshield professionally repaired or replaced. Here’s what to expect:

• If the crack is small and clean, a professional windshield repair service can fill the crack with a special resin, restoring the structural integrity of the glass.
• If the crack is too large or severe for repair, or if there are multiple cracks, a full windshield replacement may be necessary.
• The cost of windshield repair or replacement can vary depending on your location and the type of vehicle you drive, but it’s important to prioritize safety over cost.

By scheduling a professional windshield repair or replacement as soon as possible, you can ensure that your vehicle is safe to drive and avoid the risk of the crack spreading further.

In conclusion, while a cracked windshield can be a frustrating and potentially dangerous problem, there are several methods you can try to stop or slow the spread of the crack until you can get it professionally repaired. By using super glue or nail polish, applying a windshield repair kit, avoiding sudden temperature changes, and scheduling a professional repair or replacement, you can help protect your vehicle and ensure your safety on the road.