Can You Fix A Spider Crack In Your Windshield?

Mar 9, 2018
Auto Glass Repair

The Importance of Addressing Spider Cracks

Spider cracks, also known as star cracks, are a common type of damage that can occur on windshields. They typically appear as a web-like pattern and can be caused by various factors such as temperature changes, impact from debris, or even stress from an underlying structural weakness.

While small spider cracks may seem insignificant at first, it is crucial to address them promptly. Ignoring or neglecting these cracks can lead to more significant damage over time. Additionally, spider cracks can impair your visibility while driving, compromising your safety on the road.

Assessing the Severity of the Spider Crack

Before attempting to fix a spider crack in your windshield, it is essential to assess the severity of the damage. This evaluation will help you determine whether the crack can be repaired or if windshield replacement is necessary. Here are some factors to consider:

1. Size of the Crack

The size of the crack plays a significant role in determining whether it can be fixed. Generally, cracks that are smaller than a quarter or about six inches in length can be repaired effectively.

2. Depth of the Crack

The depth of the crack is another crucial aspect to consider. If the crack extends through the outer layer of glass and reaches the inner layer, it may be more challenging to repair. In such cases, a windshield replacement may be necessary to ensure the structural integrity of your vehicle.

3. Location of the Crack

The location of the crack is vital as well. If the crack is directly in the driver's line of sight or near the edge of the windshield, it may hinder visibility and compromise the overall strength of the glass. In these situations, it is advisable to opt for windshield replacement for optimal safety.

Repairing Spider Cracks

When dealing with small spider cracks that meet the repair criteria, it may be possible to fix them using a windshield repair kit. Here is a step-by-step guide:

Step 1: Clean the Area

Start by thoroughly cleaning the cracked area and its surroundings. Use a mild detergent and warm water to remove any dirt, debris, or residue that may obstruct the repair process.

Step 2: Apply a Repair Kit

Next, carefully follow the instructions provided with the windshield repair kit. Typically, the kit will include a special resin that needs to be applied to the crack. Use the provided tools to apply the resin evenly over the entire length of the crack.

Step 3: Allow the Resin to Cure

Once the resin is applied, it needs time to cure and bond with the glass. It is important to follow the recommended curing time specified in the repair kit's instructions. This ensures that the resin hardens and forms a strong seal.

Step 4: Polish the Surface

After the resin has fully cured, use a polishing compound and a soft cloth to gently buff the repaired area. This step helps to remove any excess resin and restore the clarity of your windshield.

Professional Assistance for Spider Crack Repair

While DIY repair kits are available, it is essential to note that repairing spider cracks requires precision and expertise. If you are unsure about your ability to perform a successful repair or if the crack is extensive, it is best to seek professional assistance, such as The Power Window Doctors. Our trained technicians specialize in repairing all types of windshield damage and can provide you with a reliable solution.

Professional auto glass repair not only ensures a high-quality repair but also offers additional benefits, such as:

  • Expert assessment and analysis of the crack
  • Access to advanced repair techniques and equipment
  • Guaranteed satisfaction and lasting results
  • Peace of mind knowing that the repair is done by skilled professionals

Preventing Spider Cracks in the Future

While it may not be possible to completely eliminate the risk of spider cracks, there are some preventive measures you can take to minimize their occurrence. Consider the following tips:

  • Maintain a safe following distance to avoid debris from other vehicles
  • Avoid extreme temperature changes, such as exposing your windshield to direct sunlight after parking in a shaded area
  • Regularly inspect your windshield for any signs of damage
  • Repair smaller chips or cracks promptly before they develop into spider cracks
  • Be cautious when slamming doors or hitting your windshield with objects


While spider cracks can be concerning, it is possible to fix them under certain circumstances. By carefully assessing the severity of the crack and following proper repair techniques, you can restore the integrity of your windshield and enhance your safety on the road. However, for more extensive or complex repairs, it is advisable to turn to professionals like The Power Window Doctors for reliable and long-lasting solutions. Remember, early intervention is key when it comes to spider crack repairs, so don't delay addressing them!