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Crack in Windshield Growing | Causes, Risks, and Solutions

Crack in windshield growing is a concerning issue that car owners may encounter, referring to the expansion of a fracture or breakage in the vehicle’s windshield. A cracked windshield is defined as any damage, such as a chip, scratch, or fracture, that compromises the structural integrity of the glass. It poses risks not only to the driver and passengers but also to others on the road. Addressing a growing crack in the windshield is crucial due to several reasons.

Why a Cracked Windshield is Dangerous

A cracked windshield is dangerous for several reasons:

Compromised Structural Integrity: A crack weakens the overall strength of the windshield, making it more susceptible to further damage or even collapse in the event of an accident.

Impaired Visibility: Cracks can obstruct the driver’s view, leading to reduced visibility of the road, potential hazards, and other vehicles, increasing the risk of accidents.

Increased Risk of Shattering: A crack can spread and cause the windshield to shatter unexpectedly, especially under stress such as sudden temperature changes or minor impacts.

Legal Implications: In many jurisdictions, driving with a cracked windshield can be illegal and may result in fines or penalties. Additionally, if an accident occurs and it’s found that the cracked windshield contributed to the severity of the incident, it could lead to legal consequences for the driver.

Crack in Windshield Growing Fast

Crack in Windshield Growing | Causes, Risks, and Solutions

Factors Contributing to Rapid Crack Growth:

Temperature Fluctuations: Changes in temperature can cause the glass to expand and contract, putting stress on the crack. Rapid shifts, such as going from hot to cold or vice versa, can accelerate crack propagation.

Impact Damage: Even small chips or cracks from flying debris or minor accidents can weaken the structural integrity of the windshield. If left unaddressed, these weak points can become focal points for rapid crack growth.

Vehicle Vibrations: Normal driving vibrations can exacerbate cracks, causing them to spread faster over time. This effect can be particularly pronounced on rough roads or when traveling at high speeds.

Moisture and Debris: Moisture seeping into the crack, along with dirt and debris, can widen it over time. Water can also freeze within the crack, exerting pressure on the glass and accelerating the spreading process.

Quality of Glass: The quality of the glass itself can impact how quickly cracks propagate. Lower quality or older glass may be more prone to rapid expansion. If you want professional guidance then Reliable Auto Glass is best in business.

Signs of Accelerated Crack Growth:

Increased Length: If you notice that the crack in your windshield is visibly longer within a short period, it’s a clear indication of rapid growth.

Spiderwebbing: Instead of a single line, the crack may start to branch out like a spiderweb, indicating that it’s spreading quickly.

Audible Changes: You may hear popping or cracking sounds as the crack expands, especially when driving over bumps or rough terrain.

Visual Changes: The crack may become wider or deeper, and you may notice more visible damage to the glass surrounding the crack.

Changes in Driving Conditions: Rapid crack growth may be more noticeable during certain driving conditions, such as when driving at high speeds or on uneven roads.

Potential Consequences of Ignoring Fast-Growing Cracks:

Compromised Structural Integrity: A windshield provides structural support to the vehicle, especially during a rollover accident. Ignoring fast-growing cracks can compromise the integrity of the glass, increasing the risk of collapse during an accident.

Reduced Visibility: As cracks spread, they can obstruct the driver’s view, leading to impaired visibility and potentially causing accidents.

Legal Consequences: In many jurisdictions, driving with a cracked windshield that impairs visibility is illegal and can result in fines or citations.

Increased Repair Costs: Ignoring a rapidly growing crack can lead to more extensive damage, requiring costly repairs or even windshield replacement.

Safety Risks: A compromised windshield may fail to provide adequate protection in the event of an accident, increasing the likelihood of injury to the vehicle occupants.

Five Ways to Fix a Crack in Windshield

Temporary Solutions

Using Clear Nail Polish or Tape: Clean the crack thoroughly and apply clear nail polish or tape over the crack to prevent it from spreading temporarily.

Applying Windshield Repair Kits: Utilize windshield repair kits available in automotive stores. These kits typically include resin and tools to fill the crack temporarily.

Professional Repair Methods

Windshield Resin Injection: Professionals can inject specialized resin into the crack, which bonds with the glass to restore strength and clarity.

Windshield Replacement: If the crack is severe or if it obstructs the driver’s view, a full windshield replacement may be necessary.

DIY Techniques

Using DIY Repair Kits: Similar to professional repair kits, these DIY kits come with resin and tools for filling cracks. Follow the instructions carefully for best results.

Applying Epoxy or Resin Fillers: For smaller cracks, you can use epoxy or resin fillers available in hardware stores. Clean the crack, apply the filler, and let it cure according to the product instructions.


If you notice a crack in your windshield, it’s crucial to address it promptly, as cracks have a tendency to grow over time. Even if the crack seems small initially, changes in temperature, road vibrations, and stress on the glass can cause it to expand. Ignoring the issue or relying solely on temporary fixes such as tape or nail polish may provide a short-term solution but can lead to more significant problems later on. To prevent further damage and ensure safety on the road, it’s advisable to seek professional assistance for repair or replacement. Feel free to contact us for any type of query or services like crack in windshield growing.


What Causes A Crack In A Windshield To Grow?

Cracks in windshields can grow due to various factors such as changes in temperature, road vibrations, and stress on the glass. Additionally, dirt and debris can exacerbate the expansion of cracks over time.

How Can I Prevent A Crack In My Windshield From Growing?

Promptly addressing any cracks in your windshield is crucial. Avoid exposing your vehicle to extreme temperature changes and driving on rough roads whenever possible. Additionally, keeping your windshield clean and free of debris can help prevent cracks from expanding.

Are There Any Temporary Solutions To Stop A Crack In A Windshield From Growing?

While temporary solutions like clear nail polish or tape may help prevent a crack from spreading momentarily, they are not long-term fixes. It’s essential to seek professional repair or replacement to address the issue effectively.

What Should I Do If I Notice A Crack In My Windshield Growing?

If you observe a crack in your windshield getting larger, it’s crucial to take action promptly. Contact a professional auto glass repair service to assess the damage and recommend the appropriate course of action, whether it’s repair or replacement.

Is It Safe To Drive With A Crack In My Windshield That Is Growing?

Driving with a crack in your windshield, especially one that is expanding, can pose safety risks. The crack compromises the structural integrity of the glass, increasing the likelihood of shattering during a collision or even sudden changes in driving conditions. It’s best to address the issue as soon as possible to ensure your safety on the road.

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