Best Windshield Repair Kits: Confidently Fix Cracks, Chips, and Other Damage
These kits are designed for car owners with little to no experience fixing windshields.
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Whether or not you're a car enthusiast, it's important to keep your vehicle in proper working condition for safety and functionality. That means repairing small chips and cracks in the windshield as soon as possible, especially if they impede your line of sight. If left unattended, this type of damage can turn into a serious issue. Fortunately, if you take care of the problem early enough and the damage is minor, you can repair it without needing the assistance of a professional.
There are a variety of affordable and effective windshield repair kits available in stores and online. They allow you to easily make repairs at home. These kits can’t fix all types of windshield damage, but they do a good job with small chips and cracks. This buying guide will help you find the best windshield repair kits available.
Permatex Windshield Repair Kit
This is a straightforward kit that’ll walk you through windshield repair step by step, with little prep and no prior experience needed.
- Photo-based step-by-step instructions
- No mixing of resin or other ingredients
- Works to prevent more damage
- Takes longer to cure
- May need additional UV light
Blue Star Windshield Repair Kit
This kit is designed for small cracks or chips and is one of the easier products to use on the market.
- Fast acting
- Stops damage from spreading
- Repairs hardly noticeable
- Doesn’t totally erase damage
- Single-use application
Rain-X Windshield Repair Kit
This kit is good for multiple repairs, and cracks vanish when examined at a 45-degree angle. It works best on one-inch-diameter damage or and cracks shorter than 12 inches.
- Fills in chips and small cracks
- Easy to use
- Repairs are quick
- Cannot patch large holes
- Instructions are technical
- Strong odor
I took many factors into consideration when compiling this list of the best windshield repair kits. I made sure to pick products from reputable manufacturers with a reputation of creating high-quality items for automotive purposes. I focused on kits that were easy to use, particularly for car owners who have limited or no experience with this type of repair. I also made sure to feature kits in a wide range of prices to suit a variety of budgets. Finally, I checked consumer feedback to see how these kits perform in real-life conditions. For more info on the process, check out The Drive’s Gear About page.
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Best Windshield Repair Kits Reviews & Recommendations
- Brand: 3M
- Model: 08580
- Weight: 3.2 ounces
- Stops further damage
- Dries quickly
- Can fill in chips
- Not designed for larger cracks
- Can’t fix extensive damage
- Must be used immediately
The Permatex Windshield Repair Kit is a great option if you’ve never repaired windshield damage before and want to make the process simple and struggle free. This product gets the job done by providing you with an airtight final result that requires no mixing, very light prep, and little in the way of existing knowledge. Suitable for use on cracks and chips—but particularly great for bullseye and star cracks—this kit can fix damage measuring up to 1.25 inches in size. It’s a complete kit with everything you need, including easy-to-follow instructions that walk you through the process with photos.
It can be used in temperatures between 50 and 75 degrees Fahrenheit, and the included resin cures in natural sunlight. The only potential drawback is that the resin can take a bit longer to dry and fully cure because it’s a professional-grade solution. You’ll want to wait or employ the help of a UV light device to speed things up.
- Brand: Blue-Star
- Model: CSA-192
- Weight: 1.6 ounces
- Works quickly
- Can be used in warm temperatures
- Disposable components
- Doesn’t erase damage completely
- Cracks visible after repairs
- Only enough for a single repair
This windshield repair kit from Blue Star is an approachable option for anyone who needs to fix a small crack or chip in a windshield. Each kit includes an injector, alignment seal, resin chamber, sheet of curing film, razor blade, a tube of resin, and instructions in English and Spanish. This is a single-use kit, so it comes with enough resin for one repair. It’s simple to use and can stop the damage from spreading.
For best results, plan on setting aside about an hour to repair your windshield on a warm, sunny day and review the instructions carefully. It’s possible that glass damage will still be visible after a repair, but this kit makes chips and cracks significantly less noticeable, giving you a better view of the road and minimizing the chances of a crack spreading. This kit comes with all the tools you’ll need for a precise repair, so make sure to take the time to set it up correctly.
- Brand: Rain-X
- Model: 600001
- Weight: 2.4 ounces
- Fills cracks thin and deep
- Includes all necessary tools
- Enough resin for multiple cracks
- Won’t work on large holes
- Confusing instructions
- Will stick to skin
The Rain-X Windshield Repair Kit repairs all types of laminated windshields, minimizes the appearance of chips and cracks, and stops cracks from spreading. It’s good for multiple repairs, and the crack vanishes when examined at a 45-degree angle. It includes a one-gram bottle of resin repair, a repair device, curing strips, razor blade, and instructions. This kit is easy to use, doesn't take much time to complete the repair, and includes enough resin to repair more than one chip.
The resin cures only when exposed to UV light, so it is easy to work with and clean up. It’s able to inject resin deeply into most cracks, displacing air bubbles and restoring the look of the glass. The kit will not work effectively to patch large holes, however. Also, it doesn't have a pushpin to remove bits of crushed glass, and the instructions are somewhat technical and may be difficult to decipher. In addition, the product has a strong odor and can adhere to your skin if you don't wear gloves.
- Brand: RockPro
- Model: J5-K1A9-7FXD
- Weight: 2 pounds
- Works quickly to repair damage
- Can be used in warm temperatures
- Disposable components
- You’ll still see cracks
- Bulky kit
The RockPro Commercial System Windshield Repair Kit is a great option if you’re concerned about the durability and longevity of your repair. This liquid-based repair kit is viscous enough to fully flow into cracks and chips of all kinds, yet it cures well and is thick enough to resist rough weather and environments. This pre-mixed formula can repair damage in as little as 10 minutes. Once it’s cured, the silicone turns into a tough and airtight seal that stays in place despite temperature fluctuations, weather changes, and all kinds of other outdoor exposure. It features two distinct formulas for use in hot or cold temps, offering quite an impressive range. Plus, it’s waterproof.
Another benefit of this kit is that it comes in a hard plastic case with enough resin to complete 10 repairs, making it a great overall value. It’s really the best bet for thin cracks rather than deep chips. And while the value per tube is good, the kit itself adds up to be expensive.
- Brand: Permatex
- Model: 16067
- Weight: 0.17 ounces
- Designed for bullseye repairs
- Easy to use
- No discoloration
- Nearly undetectable
- Some repairs are still visible
- Takes longer to cure in certain weather conditions
If you want a repair that's practically undetectable, consider the Permatex Bullseye Windshield Repair Kit. It's specifically designed to correct bullseye-shaped damage as large as one and a quarter inches in diameter. This product is compatible with most laminated glass windshields. One of its best features is its one-component application. No mixing or heat is necessary.
This kit is made for the typical vehicle owner and is simple to use. It does not produce any discoloration, and as long as you follow the instructions it produces the results you expect. It stops cracks from spreading, and it seals the damaged area so it's very difficult to see. Plus, it's not messy. You may need to watch the product's online tutorial for more thorough instructions. And while it makes many cracks undetectable, some repairs are still visible. It also takes longer to cure on colder days.
- Brand: 3M
- Model: 08580
- Weight: 3.2 ounces
- Stops further damage
- Dries quickly
- Leaves smooth surface
- Not for larger cracks
- Can’t fix extensive damage
- Must be used right after crack occurs
Available at a friendly price, the 3M Windshield Repair kit is a popular option for high quality at a lower cost. The set comes with everything you need to apply it, going on smoothly and needing no heating. The resin is fairly viscous with a quick-drying formula. When applied immediately after the damage, the 3M set is able to prevent more cracks.
It’s a great idea to get this kit as a preventative measure instead of as a way to fix damage you already have. It is designed to limit the spread of cracks and isn’t suited for large-scale damage. For the best results, use this repair tool right after the damage occurs. Provided it’s used correctly, this valuable kit is a great way to protect the glass on your car.
- Brand: J-B Weld
- Model: 2100
- Weight: 1.6 ounces
- Includes syringe
- For damage up to 1 ¼ inches
- Clean formula
- Not for all chips or cracks
J-B Weld is a well-known and trusted name in the chemical bonding business, and the J-B Weld Windshield Saver Paste is a great example of why. This patented system is capable of repairing damage up to 1 1/4 inches in diameter, unlike most kits, which are only suited to chips and cracks up to one inch. The formula is somewhat thicker and more viscous than many others on the market, making it easier to limit spillover and accidental messes.
This kit is made in the United States. The applicator syringe is perfect for putting the formula precisely where you want it. The kit comes with everything you need to perform a proper and professional-looking repair, including a push pin that can be used for digging debris out of chips. One drawback is that this kit is expensive, especially considering it’s designed for a single use.
- Brand: Delta Kits
- Model: 30001
- Weight: unavailable
- Easy to apply
- Good for wide range of temperatures
- Enough for several repairs
- Some tools not included
If you want a solid repair that won’t remind you it’s there, we recommend this advanced Magnibond resin from Delta Kits. This powerful resin fills chips and cracks to strengthen your windshield and make blemishes almost completely disappear. This includes the resin and eyedroppers needed for application but not curing strips or a repaired bridge. These bottles are a great way to save money if you already have the rest of the tools you need for a repair.
For best results, apply this resin using the included eyedropper when the ambient temperature is between 70 and 100 degrees Fahrenheit. Avoid exposure to direct sunlight, which can weaken the resin or cause discoloration. Once cured, it works well in any climate and carries a temperature rating of 58 below zero to 120 degrees Fahrenheit. This product is exceptional when it comes to clarity, but it’s also got a price to match.
- Brand: Mascarry
- Model: Mascarry Kit
- Weight: 3 ml
- Cures in 20-30 minutes
- Repairs cracks and chips
- Enough for multiple repairs
- Vague instructions
- Difficult to pour resin precisely
The Mascarry Automotive Windshield Repair Resin kit offers you a comprehensive and affordable repair option. It’s designed to work effectively on different styles of windshield cracks and chips, including crescent breaks, star breaks, M-shaped breaks, petal breaks, crushing damage, and bull’s-eye chips, and the 3-ml bottle of resin is enough to do several small chips or cracks.
This resin is great for damage that’s less than one inch in diameter but not ideal for larger cracks or chips. It cures in 20-30 minutes in direct sunlight or in as little as 5-10 minutes if you use a UV light. Thoroughly clean out the crack or chip prior to repair to make sure that the resin sets and cures clearly. This is an economical and straightforward kit that’s easy for first timers to use.
- Brand: Fix-A-Flat
- Model: 161890
- Weight: 0.035 ounces
- Simple to use
- Works in minutes
- Prevents more damage
- Requires UV to cure
- Cracks may be visible after application
The Fix-A-Flat Fix-A-Windshield Repair Kit features an advanced resin formula and is designed for tackling cracks, chips, and other types of damage that can occur on laminated windshields. One of the best features of this kit is that it is simple to use, and it takes just minutes to complete the application. Overall, it minimizes the look of chips and cracks and also prevents cracks from getting worse.
The resin requires sunlight or UV light in order to cure, but everything else you need to do the job is included in the package. Overall, it's great for fixing small cracks. However, some cracks may still be visible after application.
Our Verdict on Windshield Repair Kits
Our pick for the best windshield repair kit is the Permatex Windshield Repair Kit. It's a good option if you have no experience making windshield repairs because it's simple to use. You can use it on cracks, chips, bullseyes, and star cracks that are up to 1.25 inches long. For a more budget-friendly option, consider the Blue Star Windshield Repair Kit.
What to Consider When Buying a Windshield Repair Kit
When choosing a windshield repair kit, keep several considerations in mind in order to achieve the best results. Measure the size of the chip or crack. If it's too long or large, you will need professional assistance. Other factors to consider include type of damage, ease of use, volume of repair materials, and quality of the kit itself.
Types of Windshield Repair Kits
Resin-based windshield repair kits are designed to fill and seal cracks and gaps. These kits typically include a device to insert the resin properly into the chipped or cracked area. A few may require you to mix components before application. Some may require application in the shade for the best results. The resin is usually clear, so it will create a repair that's less visible.
Silicone is one of the easiest materials to work with when it comes to windshield repair kits. Many silicone kits don't require complicated procedures or a lot of tools to be effective. The silicone flows into chips and cracks, creating a strong seal that holds tight when exposed to shock or vibrations. Check the amount of time needed for curing as well as the temperatures in which it can be properly applied.
Windshield Repair Kits Key Features
Type of Damage
There are numerous types of cracks and chips that can occur on your windshield. Bull’s-eye damage is a center chip with cracks in a circular pattern. Crack chips are smaller than a quarter with one point of impact, while edge cracks occur on the edge of the windshield. Floater cracks occur in the center of the windshield and spread out. Half-moon cracks are shaped in a half-circle or moon shape and tend to spread out. Star cracks are caused by an impact and look like a starburst. You may also experience combination cracks with more than one type affecting your windshield.
Sensitivity to Temperature
When you’re using a windshield repair kit, consider temperature and how sensitive the materials in the kit are to it. Try to fix your windshield cracks or chips in weather that’s too cold, and the resin could seize up without curing properly. Do so in high heat, and the resin might never set.
In order to cure the resin patch, the best windshield chip repair kit will include instructions on the best temperature range to make the fix. Most kits recommend curing the repair in direct sunlight, while others say the exact opposite. It's essential to follow the product's directions in order for the resin to properly cure. Regardless of what the kit’s instructions say, it’s always a good idea to choose a moderate temperature (and a dry area) to perform windshield repairs.
The best windshield repair resin repairs chips and cracks, but it needs to be a high-quality substance. How can you tell if a kit’s included resin is worth your investment and your effort? Find one that has a denser and thicker material that dries clearly. You want the resin to blend into the windshield without leaving a big blemish. Look for clear-drying resin and user reports of flawless, seamless, and invisible final results. Additionally, look for remarks about how well a repair kit’s resin performs a year or more after being applied.
Lower-grade resin kits may dry in a pale yellow shade. If you can’t clearly identify that a windshield repair kit’s resin will dry clear, skip it. You want to make sure the final repair blends right into your windshield and offers a clear line of sight.
One windshield repair kit should be suitable for a one-time repair on a small crack on a single windshield. You want to try to repair cracks and chips as soon as they appear rather than waiting for the problem to worsen. Ideally, you should only need a small volume, but if you notice that you have multiple small spots of damage, you may require more.
If you're repairing more than one windshield, you will need a kit that can be used more than once. For a significant number of chips and cracks, you need more than just one repair kit. Extensive damage means you’ll need more material to fill and smooth out all damage. So, if a single repair looks like it will require multiple kits, you’re most likely in replacement territory.
Windshield Repair Kit Pricing
Typical windshield repair kits can be found ranging between $8 and $15. These kits offer repair compounds and accessories needed to complete at least a single windshield repair. Some kits in this price range will also offer enough formula for multiple repairs. For higher quality compounds that tend to offer more professional results, look at those for more than $20. Some top-quality products can even cost as much as $30 and more, depending on the amount of resin you buy.
You’ve got questions. The Drive has answers.
Q: Do windshield repair kits really work?
A: Yes. As long as the windshield damage isn’t too extensive and you properly follow the instructions, you can successfully repair a crack or chip. However, it may still be visible; not all repairs are undetectable.
Q: What size windshield crack can be repaired?
A: In general, windshield repair kits can correct damage up to 1 1/4 inches in diameter. Larger repairs typically need correction by a professional.
Q: Is it better to repair or replace a cracked windshield?
A: If the crack or chip is smaller than the size of a quarter, a windshield repair kit can do the job just fine. A good-quality DIY kit will prevent a rock chip or crack from expanding but will not remove the damage, and correcting a cracked window is not very costly. Professionals use similar techniques to repair small chips and cracks. However, if the crack, bullseye, or star is directly in front of your line of sight, you may want to replace the windshield. Also, if your vehicle is old, the windshield may not hold up as well under stress and probably should be replaced.
Q: How do you keep a windshield crack from spreading?
A: There are ways to delay the inevitable, but a cracked windshield is only going to get worse. Every bump and change in temperature has the potential to damage your windshield beyond repair. You can even cause a crack to spread just by touching the glass with your finger. Take our advice and fix the problem before it’s too late.
Q: Can I use a windshield repair kit on other things?
A: If the alternative is to throw something away, it might be worth your time to try repairing it with one of these kits.