Top 7 Car Windshield Crack Repair Kit Reviews

Looking for the top 7 car windshield crack repair kit reviews that actually work? Here are the best DIY kits to save you money and fix minor chips and cracks quickly, preventing further damage to your auto glass.

Key Takeaways

• Fix chips and cracks safely with DIY kits.
• Prevent small damage from spreading.
• Save money compared to professional replacement.
• Choose a kit based on crack size and your comfort level.
• Follow instructions carefully for best results.
• Inspect repair quality for lasting durability.

A small chip on your windshield might seem minor, but it can quickly turn into a major problem. These little imperfections can spread due to temperature changes or vibrations, leading to a cracked windshield that compromises your safety and your car’s structural integrity. Replacing a windshield can be expensive, and driving with damaged glass can lead to serious legal issues. Fortunately, there are effective DIY car windshield crack repair kits that can help you fix these issues yourself. We’ve researched and reviewed the top options to make your decision easier, ensuring you can get back on the road with confidence.

Why Repair Your Windshield Early?

Your car’s windshield is more than just a piece of glass; it’s a critical safety component. It provides structural support for your vehicle’s roof, preventing it from collapsing during a rollover accident. The windshield also plays a vital role in the proper deployment of airbags. When your windshield is damaged, its integrity is compromised, significantly reducing its ability to perform these essential safety functions. Small chips and cracks can also obstruct your vision, posing a hazard to you and other drivers. Furthermore, most states have laws requiring clear visibility through the windshield, meaning a damaged one could land you a ticket. For instance, the National Highway Traffic Safety Administration (NHTSA) emphasizes the importance of well-maintained auto glass for overall vehicle safety. Repairing minor damage promptly is not only cost-effective but also crucial for maintaining the safety and structural soundness of your car.

Understanding Windshield Damage: Chips vs. Cracks

Before diving into repair kits, it’s essential to know what kind of damage you’re dealing with. Windshield damage typically falls into two categories: chips and cracks. Chips are usually star-shaped, bullseye, or combination breaks where a small piece of glass is missing or pushed inward. Cracks, on the other hand, are lines that extend from a point of impact. Both can be repaired, but the size and type of damage will determine if a DIY kit is suitable. Generally, DIY kits are best for chips smaller than a quarter and cracks less than 6 inches long. Longer cracks or damage near the edges of the windshield often require professional attention because the glass is more stressed in those areas, making DIY repairs less effective and potentially unsafe. It’s always a good idea to consult with a professional if you’re unsure about the severity of the damage.

How Windshield Repair Kits Work

Most car windshield crack repair kits work on a similar principle: filling the damaged area with a resin that, when cured, restores the glass’s structural integrity and appearance. The process typically involves cleaning the damaged area, injecting a special liquid resin into the chip or crack, and then curing the resin with sunlight or a UV light. The resin bonds with the glass, preventing the damage from spreading and making it less visible. The resin used is usually optically matched to the windshield glass, so the repaired area becomes nearly invisible once properly cured. The effectiveness of the repair depends heavily on the type of damage, the quality of the kit, and how carefully the instructions are followed.

Top 7 Car Windshield Crack Repair Kit Reviews

Choosing the right windshield repair kit can seem overwhelming with so many options available. We’ve evaluated several popular kits based on ease of use, effectiveness, completeness of the kit, and overall value. Here are our top 7 picks for the best car windshield crack repair kits that work:

1. Permatex 09103 Windshield Repair Kit

Permatex is a well-known name in automotive repair products, and their windshield repair kit lives up to the brand’s reputation. This kit is designed for repairing chips, small cracks, and star breaks. It’s a user-friendly option for DIYers, featuring a simple application syringe and a curing film. The resin is clear and durable, offering a good balance between visibility and strength. It’s a straightforward process that can yield impressive results for common windshield damage.

Pros:

• Easy to use, clear instructions.
• Durable, clear resin.
• Reputable brand.
• Effective for chips and small cracks.

Cons:

• May not be the best for longer cracks.
• Curing can take time depending on sunlight.

2. Cherish (Black) Windshield Repair Kit

This kit stands out for its comprehensive design, aiming to provide professional-quality results at home. It includes a vacuum-pressured applicator that helps draw out air from the damaged area before injecting the resin. This is crucial for a thorough repair. It comes with ample resin, making it suitable for multiple repairs or slightly larger damages. The instructions are clear, and the overall build quality of the applicator is robust.

Pros:

• Advanced applicator for better resin penetration.
• Includes enough resin for multiple repairs.
• Durable and effective results.
• Good for slightly larger chips and cracks.

Cons:

• Slightly more complex to use than simpler kits.
• Requires precise application.

3. Rain-X 50001 Windshield Repair Kit

Rain-X is synonymous with automotive glass care, and their repair kit offers a convenient solution for minor windshield damage. It’s designed for quick fixes, typically for chips and short cracks. The kit includes a pedestal that holds the injection device in place, and a resin syringe. The application is straightforward, and the resin dries clear, minimizing the visual impact of the repair. It’s a great option for those who want a quick and easy fix.

Pros:

• Very easy to use, quick application.
• Dries clear, minimal visibility.
• Affordable and readily available.
• Effective for small chips.

Cons:

• Resin quantity is limited.
• Less effective on longer cracks.

4. J-B Weld Windshield Repair Kit

J-B Weld is renowned for its strong bonding agents, and their windshield repair kit leverages this expertise. This kit offers a robust solution for chips and cracks. It features a unique applicator that creates a vacuum to remove air and moisture from the damage before resin injection. The resin is known for its strength and durability, making it a reliable choice for permanent repairs. It’s a bit more involved than some other kits, but the results are often superior.

Pros:

• Extremely strong and durable resin.
• Effective vacuum application system.
• Good for a variety of damage types.
• Long-lasting repairs.

Cons:

• Can be more difficult to use for beginners.
• Resin can be difficult to clean up if spilled.

5. BlueStar Windshield Repair Kit

The BlueStar Windshield Repair Kit is a popular choice for its overall performance and value. It includes a good quantity of resin and a well-designed applicator tool that allows for controlled resin injection. The kit is user-friendly, and the instructions are straightforward. Many users report excellent results, with the repaired areas becoming nearly invisible and the damage effectively sealed to prevent further spreading. It’s a solid all-around kit for most common windshield imperfections.

Pros:

• Good value for the price.
• Effective resin for clear repairs.
• User-friendly applicator.
• Suitable for various small damages.

Cons:

• Curing time can vary significantly.
• May require multiple applications for deeper damage.

6. Holts High Performance Windshield Repair Kit

Holts is a trusted brand in automotive maintenance products, offering a high-performance windshield repair kit that aims for professional results. This kit features a strong resin and a well-designed applicator system that ensures good penetration into the damaged glass. It’s designed to be effective on chips, star breaks, and even short cracks. The kit is relatively easy to use, making it a good option for car owners looking for a reliable DIY solution.

Pros:

• High-strength resin for durable repairs.
• Effective applicator for good coverage.
• Suitable for multiple types of damage.
• Achieves near-invisible repairs.

Cons:

• Can be slightly more expensive than basic kits.
• Requires careful application to avoid mess.

7. Turtle Wax Windshield Repair Kit

Turtle Wax, another familiar name in car care, offers a straightforward windshield repair kit that focuses on simplicity and effectiveness. This kit is ideal for quick fixes of small chips and cracks. It includes a resin applicator and curing strips. The process is easy to follow, and the resin dries clear, making the repair less noticeable. It’s an excellent choice for car owners who want a simple solution for minor windshield imperfections without a steep learning curve.

Pros:

• Very simple and easy to use.
• Quick drying and clear finish.
• Budget-friendly option.
• Good for small chips and minor damage.

Cons:

• Limited resin for multiple or larger repairs.
• May not be as durable as heavy-duty kits.

Comparison Table: Top Windshield Crack Repair Kits

Here’s a quick comparison to help you choose the best kit for your needs:

Kit Name	Best For	Ease of Use	Resin Type	Pros	Cons
Permatex 09103	Chips, Small Cracks, Star Breaks	High	Clear, Durable	User-friendly, Reputable Brand	Limited for long cracks
Cherish (Black)	Chips, Short to Medium Cracks	Medium	High-Quality Resin	Advanced Applicator, Multiple Repairs	Slightly complex
Rain-X 50001	Small Chips, Very Short Cracks	Very High	Clear, Fast-Drying	Extremely Easy, Affordable	Limited resin quantity
J-B Weld	Chips, Cracks, All Damage Types	Medium	Very Strong, Durable	Robust Bond, Effective Vacuum	More involved process
BlueStar	Chips, Star Breaks, Small Cracks	High	Clear, Effective	Good Value, User-Friendly	Curing time varies
Holts High Performance	Chips, Star Breaks, Short Cracks	High	High-Strength	Durable, Professional Results	Slightly pricier
Turtle Wax	Small Chips, Minor Cracks	Very High	Clear, Fast-Drying	Simple, Budget-Friendly	Less durable for severe damage

How to Use a Windshield Crack Repair Kit: A Step-by-Step Guide

While specific instructions vary slightly between kits, the general process for using a windshield repair kit is consistent. Following these steps carefully will help you achieve the best possible outcome:

Step 1: Prepare the Damaged Area

Clean the area around the chip or crack thoroughly. Use a glass cleaner and a clean microfiber cloth to remove any dirt, debris, or moisture. Ensure the damaged area is completely dry before proceeding. If there are loose pieces of glass at the impact point, use a needle or the tip of a razor blade to carefully remove them.

Step 2: Position the Applicator

Most kits come with a pedestal that adheres to the windshield over the damaged area. Attach the injection device to this pedestal. Ensure it’s centered directly over the chip or crack. Some kits may require you to place a rubber seal around the damaged area first.

Step 3: Inject the Resin

Load the syringe with the repair resin. Screw the syringe onto the applicator device. Slowly and steadily push the plunger to inject the resin into the damaged area. You want the resin to fill the chip or crack completely. Some advanced kits use a vacuum system to pull air out first, then allow the resin to be pushed in. Follow your kit’s specific instructions regarding pressure and injection time. For cracks, you may need to inject resin at multiple points along the crack.

Step 4: Cure the Resin

Once the resin is injected, you need to cure it. Many kits come with small adhesive strips called curing strips. Place one of these strips over the repaired area. Then, expose the area to direct sunlight for a specified amount of time (usually 10-30 minutes, depending on the kit and sunlight intensity). If sunlight is not available, some kits include a small UV curing light that you can use. Ensure the resin is fully hardened before moving to the next step.

Step 5: Remove Excess Resin and Clean

After the resin has cured, carefully remove the applicator and pedestal. Use a razor blade (often included in the kit, or a new single-edge razor blade) held at a very low angle to carefully scrape away any excess cured resin from the surface of the windshield. Be gentle to avoid scratching the surrounding glass. Finally, clean the repaired area with glass cleaner and a microfiber cloth.

Pro Tip: Perform repairs on a cool, overcast day or in a shaded area if using sunlight. Intense direct heat can cause the resin to cure too quickly or unevenly, potentially leading to a less effective repair.

When to Call a Professional

While DIY kits are excellent for small damages, there are limitations. You should always seek professional auto glass repair or replacement if:

• The crack is longer than 6 inches.
• The damage is in the driver’s direct line of sight.
• The damage extends to the edge of the windshield.
• There are multiple deep cracks or chips.
• The damage compromises the structural integrity of the glass.

Driving with severely damaged windshields can be dangerous and may even lead to failing a vehicle inspection. For these situations, services like Safelite or your local reputable auto glass shop can provide expert repairs or replacements. You can explore resources from the Auto Glass Safety Council (AGSC) for more information on professional standards and services.

Factors to Consider When Buying a Kit

When choosing a car windshield crack repair kit, keep these factors in mind:

• Type of Damage: Ensure the kit is suitable for the specific damage (chip, star break, crack).
• Ease of Use: Look for kits with clear instructions and user-friendly applicators, especially if you’re new to DIY repairs.
• Resin Quality: A good resin should be clear, durable, and bond well with glass.
• Completeness of Kit: Check if the kit includes all necessary tools and supplies, such as applicator, resin, curing strips, and razor blade.
• Brand Reputation: Trusted brands often offer more reliable products and better customer support.
• Cost: DIY kits are generally affordable, but compare prices to find the best value for your needs.

Frequently Asked Questions About Windshield Repair Kits

Q1: Can I repair any type of windshield crack with a DIY kit?

No, DIY kits are best for small chips and cracks, generally under 6 inches. Larger cracks, damage at the edges, or damage in the driver’s direct line of sight usually require professional repair.

Q2: How long does a DIY windshield repair last?

A properly performed DIY repair can last for years, preventing the damage from spreading and maintaining the glass’s integrity. However, it may not be as invisible or as strong as a professional repair and might need reapplication over time.

Q3: Is it safe to repair my own windshield?

Yes, for minor damages, DIY kits are generally safe to use. However, always follow instructions carefully to avoid further damage or injury. If you are unsure, consult a professional.

Q4: How long does the repair process take?

The actual application and injection process usually takes about 15-30 minutes. The curing time, depending on sunlight or UV light, can add another 10-30 minutes. Total time is typically under an hour.

Q5: Will a repair kit make the chip or crack disappear completely?

While a good repair kit will make the damage significantly less visible and prevent it from spreading, it may not make it completely disappear. The goal is to restore structural integrity and improve visibility.

Q6: Can I use a windshield repair kit in cold weather?

It’s best to perform repairs in moderate temperatures, ideally between 50°F and 75°F (10°C and 24°C). Very cold or very hot temperatures can affect the resin’s curing process and the effectiveness of the repair.

Q7: Where can I buy windshield repair kits?

You can purchase windshield repair kits at most auto parts stores, major online retailers like Amazon, Walmart, and directly from the manufacturers’ websites.

Conclusion

A damaged windshield doesn’t have to be a costly or stressful problem. With the right car windshield crack repair kit, you can effectively fix minor chips and cracks, saving time and money while ensuring your vehicle remains safe. We’ve reviewed some of the top-rated kits that offer a good balance of performance, ease of use, and affordability. Remember to assess the damage carefully, choose a kit suited for the job, and follow the instructions precisely. For anything beyond minor imperfections, don’t hesitate to seek professional assistance. By taking proactive steps to repair your windshield, you contribute to your vehicle’s safety and maintain your investment.