Our article will help you understand how to stop a windshield crack from spreading.

Picture this: You’re cruising down the highway, minding your own business, when suddenly a pebble flies up and smacks your windshield. You hear that dreaded “crack!” sound and your heart sinks. As you inspect the damage, you see a small crack splintering across the glass. “Great, just what I needed,” you mutter. Cracked windshields are a safety hazard that many car owners face.

If you’ve ever found yourself in this predicament, you’re not alone. Windshield cracks and rock chips are a common problem faced by vehicle owners. But don’t panic just yet! There are steps you can take to stop that pesky windshield crack from spreading further.

In this comprehensive guide, we’ll walk you through everything you need to know about how to stop a windshield crack from spreading.

Understanding Windshield Cracks

Before we dive into solutions, let’s take a closer look at windshield cracks themselves. How do they happen in the first place? Well, there are a few common culprits:

  • Road debris: Small rocks, pebbles, and other debris kicked up by vehicles can cause a chipped windshield or rock chip
  • Extreme temperature changes: Sudden temperature changes and fluctuations from hot to cold or cold to hot can stress the glass.
  • Physical impact: Hail, fallen branches, speed bumps, slamming doors, or even a wayward golf ball

Not all windshield cracks are created equal, though. They can come in various shapes and sizes:

  • Bulls-eye cracks: Circular damage with a cone in the outer layer of glass
  • Star breaks: Cracks that radiate outwards from the point of impact
  • Combination breaks: Damage with multiple characteristics like crushed glass and cracks
  • Crack chips: Single cracks or small chips, less than 3/4 inch.

If left untreated, even a tiny crack can gradually spread, splintering out in veiny tendrils across your entire windshield. Why? Factors like moisture, dirt, rough roads and even washing your car can exacerbate the damage over time.

More than just an eyesore, driving with a cracked windshield can be dangerous. Your windshield provides up to 30% of your vehicle’s structural integrity, so if it’s compromised, it may not protect you properly in an accident. Plus, cracks can obstruct your line of sight.

Bottom line: It’s crucial to address an existing windshield crack quickly for your safety. But you can prevent windshield cracks from getting worse by fixing them promptly.

Assessing the Cracked Windshield Damage 

So you’ve discovered a fresh chip or crack—now what? First, you’ll want to assess the scope of the damage. Grab a measuring tape or ruler and carefully determine the size and depth of the crack. As a rule of thumb, cracks smaller than a dollar bill can often be repaired, while larger cracks usually require the entire windshield to be replaced.

Location matters too. Cracks at the edge of the windshield tend to spread more rapidly and can compromise the structural integrity of the glass. Chips directly in the driver’s line of vision also typically necessitate replacement, as repairs can cause slight distortions. 

As you evaluate the damage, avoid applying pressure to the crack or touching it excessively, as the oil from your skin could impede the repair resin from bonding properly. If the crack is contaminated with dirt or debris, don’t attempt to clean it yourself to avoid causing further damage. Leave that to the windshield repair technician professionals to avoid inadvertently making the crack worse.

Temporary DIY Methods to Help Stop a Windshield Crack From Spreading

If you can’t get your windshield crack repaired or replaced right away, there are a few temporary DIY methods you can use as a temporary fix to prevent further spreading in the meantime. Just realize that these are very minimal, short-term fixes and you should address your cracked windshield with a permanent solution promptly.

Use a DIY windshield repair kit 

These DIY windshield repair kits are readily available at local auto parts stores. Follow these steps to repair your windshield crack:

  1. Clean the affected area with an auto glass cleaner and let it dry. 
  2. Attach the suction cup stabilizer tool over the crack to prevent the crack from spreading.
  3. Drill a small hole through the top layer of glass using a 1/16-inch drill bit.
  4. Apply the resin from the windshield repair kit into the hole and crack, ensuring it fills the entire damaged area. 
  5. Cure the resin by exposing it to direct sunlight or using a UV light pen.
  6. Remove the stabilizer tool and clean any excess resin with a razor blade.

Clear Nail Polish or Crazy Glue

Believe it or not, clear nail polish and crazy glue or super glue can be used as a temporary fix for small windshield cracks. Please note: We never advise putting anything into a chip as it would prevent our resin from entering the chip and bonding properly. However, if you intend to replace the windshield very soon, here’s how you could use clear nail polish or Crazy Glue as a temporary fix:

  1. Clean the area around the crack with auto glass cleaner and lint-free cloth
  2. Carefully apply clear nail polish or super glue directly to the crack 
  3. Allow it to dry completely before driving the vehicle

This method works by sealing the crack and preventing moisture and dirt from entering, which can cause it to spread more quickly. While not a permanent solution by any means, applying clear nail polish can buy you some time until you’re able to get it replaced at an auto glass shop which should be done ASAP.

Clear Packing Tape

Another quick and temporary hack to stop a windshield crack is to cover the minor crack with clear packing tape:

  1. Ensure the area around the crack is clean and dry
  2. Cut a piece of tape large enough to cover the crack
  3. Carefully apply the tape over the damaged area, pressing out any air bubbles

Avoid car washes or washing the area around the taped crack.

By covering the existing windshield crack with clear packing tape, you can help keep moisture from seeping in and debris from wedging into it. Again, this is not a long-term fix, so make sure to schedule a proper windshield repair technician ASAP.

While these temporary fixes and DIY methods can help in a pinch, they come with some risks and limitations. Trying to repair even a small crack yourself with at-home repair kits or glue can cause further damage if not done correctly. Remember, DIY fixes are always temporary and your windshield will still require a professional repair or replacement ASAP. So, when in doubt, leave it to the auto glass experts. 

Professional Windshield Repair

For small chips and cracks, professional windshield repair is usually the way to go. Skilled windshield repair technicians at auto glass repair shops use specialized tools and high-quality resins to fill in the damaged area and prevent the crack from spreading further. Here’s a quick look at what that process typically entails:

  1. The damaged area is carefully cleaned to remove any debris or contamination
  2. A vacuum is created over the crack to remove air and moisture 
  3. An injection tool is used to apply repair resin, which then hardens under UV light
  4. The area is polished to blend seamlessly with the rest of the glass

One major advantage of professional repair is the quality of the materials used. Auto glass shops use industry-grade resins that are formulated to maintain clarity and provide superior durability. You can trust that the repair will hold up long-term and is much less likely to re-crack compared to temporary DIY fixes.

Of course, as with any professional service, cost is a factor. Windshield crack repair typically runs between $60 to $150, depending on the extent of the damage. The good news is that in many cases, your insurance company will cover the cost of chip repair without raising your deductible. It’s always a good idea to check your policy first. 

As for time, windshield crack repair is usually a fairly quick process. Most repairs can be completed within half an hour, sometimes even while you wait. Many auto glass shops, including Precision Auto Glass, even offer mobile, same-day service and will come to you to repair your windshield, making it even more convenient.

Windshield Replacement 

In some instances, a complete replacement is necessary if the damage is too severe to repair. If the crack is longer than a dollar bill, extends to the edge of the windshield, or is directly in the driver’s line of vision, repair likely isn’t an option. Safety should always be the top priority.

The replacement process involves carefully removing the damaged windshield and installing a brand-new one in its place. Only specially trained technicians should perform this service, as it requires the use of particular tools and precise methods to ensure a secure fit. Improper installation can lead to leaks or even the windshield popping out in an accident. 

When it’s time to get your windshield replaced, you’ll have a choice between OEM (Original Equipment Manufacturer) and aftermarket glass. OEM windshields are made by the same manufacturer as your vehicle, ensuring an exact fit. Aftermarket glass is typically less expensive, but quality and fit can sometimes be hit or miss if it is not OEM-level quality. An auto glass professional can help you weigh the pros and cons of your particular make and model.

No matter which route you choose, proper windshield installation is essential for your safety on the road. A securely fitted windshield ensures optimal visibility and structural integrity in the event of an accident. Don’t cut corners when it comes to something so critical.

Preventing Future Windshield Cracks

Of course, the best solution for stopping windshield cracks is preventing them from happening in the first place. While some cracks are simply unavoidable, there are steps you can take to minimize your risk and prevent windshield cracks:

Practice defensive driving: Increase your following distance behind other vehicles, especially large trucks that are more likely to kick up debris. Avoiding gravel roads when possible can also prevent rock chips.

Regular maintenance: Inspect your windshield frequently and address small chips before they have a chance to become full-fledged cracks. Wash your car regularly to prevent dirt buildup around chips.

Park smart: Whenever you can, park your car in a garage or under covered areas to protect from hail, falling branches, and other hazards. Park away from trees if you must park outside.

Avoid extreme temperature changes: Whenever possible, park in the shade and lower your windows slightly on hot days to minimize the risk of glass stress cracks from sudden temperature changes and direct sunlight. If your windshield is frozen over, use a window defroster to slowly warm your windshield to avoid getting a windshield crack from a sudden increase in temperature.

Preventative measures won’t guarantee you’ll never deal with a cracked windshield, but they can lower the odds. Being proactive is key, which remains true in preventing a windshield crack from spreading.

When to Call an Auto Glass Professional

While some small cracks can be temporarily remedied by car owners with DIY methods and a windshield repair kit in a pinch, there are some instances where it’s always best to call in the pros at an auto glass shop ASAP:

  • The crack is longer than 6 inches
  • The crack extends to the outer edge of the windshield
  • The damage is directly in the driver’s line of vision
  • The crack was left untreated and has spread significantly
  • The crack is contaminated with debris and you’re unable to clean it
  • Your windshield was installed improperly and is showing signs of stress 

Delaying or ignoring windshield damage can quickly snowball a minor crack into a much bigger problem. What starts as a tiny crack or small chip can spread like wildfire across your windshield, impairing visibility creating a safety hazard, and weakening the structural integrity of your windshield. The longer you wait, the more likely you’ll require a complete windshield replacement instead of a far less expensive repair.

If you’re in the Denver, Colorado area and need windshield crack repair or replacement, Precision Auto Glass is here to help. Our team of certified technicians have years of experience and use only the highest quality materials to ensure your windshield looks as good as new. We even offer mobile services for your convenience – we’ll come to you! In many cases, we can offer same-day service.

Key Takeaways on Stopping Windshield Cracks

Dealing with cracked windshields is never fun, but armed with the right knowledge, you can stop those cracks in their tracks and keep your auto glass looking great. Here are some key points to remember:

  • Address a windshield crack promptly to prevent spreading and safety hazards
  • Assess the damage carefully to determine if using a windshield repair kit is enough or a replacement is needed
  • Use DIY methods like applying clear nail polish only as temporary fixes to stop the win
  • Seek professional work from an auto glass repair shop for small cracks to ensure quality and longevity
  • Replace the entire windshield if the damage is severe or impairs visibility
  • Practice preventative measures to prevent a windshield crack from formulating when possible, like avoiding sudden temperature changes and extreme temperatures

Your safety on the road should always be a top priority. If you’re ever unsure how to handle windshield damage, don’t hesitate to call in the professionals at Precision Auto Glass. With the right care, your windshield will keep you protected for many miles to come!