What AutoZone windshield chip repair kits contain and how they work
AutoZone sells windshield repair kits that let you fill small chips and cracks yourself using a resin compound. The kits typically include a bottle of clear resin, an applicator tool (usually a syringe or plunger-style dispenser), adhesive strips or suction cups to hold the tool in place, and a curing strip or plastic cover. The resin hardens when exposed to sunlight or UV light, bonding the damaged glass together and sealing out moisture.
The process is straightforward: you clean the chip, inject resin into the damage, remove air bubbles, let it cure, and then scrape off excess. Most kits are designed for chips smaller than a quarter and shallow cracks up to a few inches long. Larger damage or cracks that span across the driver's line of sight are not suitable for DIY repair and typically require professional replacement.
AutoZone carries several brands of these kits, including Permatex, Versachem, and Rain-X. Prices range from roughly $10 to $30 depending on the brand and what tools are included. Some kits are single-use; others contain enough resin for multiple repairs.
Key Takeaways
- AutoZone windshield repair kits use UV-curing resin to fill and seal small chips and shallow cracks without removing the glass.
- The kits work best on damage smaller than a quarter and are not designed for large cracks, deep gouges, or chips in the driver's direct line of sight.
- Curing time varies by kit but typically takes 24 hours of sunlight exposure or longer in shade, so plan the repair for a sunny day if possible.
- A successful repair can prevent a small chip from spreading into a larger crack that requires full windshield replacement.
- Some insurance policies cover professional windshield repair with little or no deductible, which may be cheaper than a kit if the damage qualifies.
Step-by-step process for using a windshield repair kit
Start by cleaning the damaged area thoroughly with rubbing alcohol and let it dry completely. Use the applicator tool included in the kit to inject resin directly into the chip or crack. Push the plunger or syringe slowly so the resin fills the void without trapping air bubbles. If your kit includes a suction cup or adhesive strip, attach the applicator tool to the windshield to hold it steady while the resin sets.
Once the resin is injected, place the curing strip (a clear plastic sheet) over the repair and leave it in direct sunlight. The UV light triggers the hardening process. Most kits require 24 hours of sun exposure, though some cure faster in bright conditions. If it is cloudy or you cannot wait, some kits include a UV lamp or can be cured under a regular lamp, though this takes longer.
After curing, remove the curing strip and use a plastic scraper or razor blade to trim away excess resin flush with the windshield surface. The repair should be clear and smooth. If the resin did not fully fill the damage, you can repeat the process, though most kits only have enough material for one or two repairs.
When a DIY kit is enough and when you need professional repair
A windshield repair kit works well for small chips caused by road debris — the kind that look like a small bullseye or star pattern. It also works for short, shallow cracks that have not spread. The repair is permanent and will not get worse if done correctly. Many people use kits to stop a small chip from becoming a larger problem while they arrange a professional replacement.
Professional repair or replacement is necessary if the damage is in the driver's direct line of sight (the area swept by the windshield wipers), if the crack is longer than a few inches, if the chip is deeper than the kit can fill, or if the windshield has multiple areas of damage. Some states have laws about what damage is safe to drive with, and a large or poorly repaired chip can fail inspection.
Insurance often covers professional windshield repair with a low or zero deductible under comprehensive coverage. If your insurance covers it, a professional repair is usually faster, more reliable, and costs you nothing or very little. Check your policy before buying a kit.
Comparing AutoZone kits to other retailers and brands
AutoZone is one of several places to buy windshield repair kits. Walmart, Target, Amazon, and most auto parts stores carry similar products. The brands available vary by location, but Permatex, Versachem, and Rain-X are common across retailers. Prices are similar everywhere — usually $10 to $30 — so availability and convenience matter more than cost.
Some kits are more user-friendly than others. Kits with a plunger-style applicator and suction cup tend to be easier to use than syringe-style kits, especially if you are doing the repair alone. Read the reviews on the product page before buying to see what other users found difficult. AutoZone staff can also point you to the kit with the best reviews if you ask in person.
Professional repair kits used by glass shops use stronger resins and specialized equipment, so the results are more durable. A DIY kit repair may last the life of the windshield if done well, but a professional repair is more likely to be invisible and permanent.
What can go wrong and how to avoid common mistakes
The most common mistake is not cleaning the chip thoroughly before injecting resin. Dirt, dust, or moisture inside the damage will prevent the resin from bonding properly and the repair will fail. Use rubbing alcohol and let it dry completely — do not rush this step.
Trapping air bubbles in the resin is another frequent problem. Inject slowly and watch for bubbles rising to the surface. If you see them, tap the applicator gently or use a toothpick to release them before the resin starts to cure. Some kits include a tool for this; others do not.
Curing in shade or cloudy weather will make the process take much longer or fail entirely. UV-curing resin needs direct sunlight or a UV lamp to harden. If you cannot wait for sun, check whether your kit includes a lamp or if you need to buy one separately. Leaving the repair uncured will result in a sticky, runny mess that does not seal the damage.
Finally, do not attempt to repair damage that is too large or in the wrong location. A chip in the driver's line of sight or a crack longer than a few inches will not be fixed by a kit and may be illegal to drive with. Knowing the limits of the tool saves time and money.
Cost comparison: DIY kit versus professional repair versus replacement
A windshield repair kit costs $10 to $30 and handles one or two small repairs. Professional windshield repair through a glass shop or insurance claim typically costs $50 to $150 but is faster, more reliable, and often covered by insurance with no out-of-pocket cost. Full windshield replacement ranges from $200 to $500 depending on the vehicle and glass type, and is usually covered by comprehensive insurance with a deductible of $100 to $500.
If your insurance covers windshield repair with no deductible, that is the cheapest option. If you have a high deductible and the damage is small, a kit is worth trying. If the damage is large or the repair fails, you will eventually need professional service or replacement anyway, so the kit is only a temporary solution in those cases.
Some insurance policies waive the deductible for windshield repair but not replacement, so calling your insurer before deciding is worth the time. A few minutes on the phone can save you $100 or more.
How to know if your windshield damage can be repaired
Windshield damage falls into a few categories. A chip is a small area where glass has broken away, usually from road debris. A crack is a line of damage that spreads across the glass. A bullseye is a circular chip with a ring around it. A star crack radiates outward from a central point like a star.
Chips smaller than a quarter and star or bullseye cracks with arms shorter than a few inches are candidates for kit repair. Cracks longer than 12 inches, chips larger than a quarter, damage that reaches the edge of the windshield, or any damage in the driver's direct line of sight should be handled by a professional. If you are unsure, take a photo and show it to a glass shop — most will assess it for free.
The depth of the damage also matters. If the crack or chip goes all the way through the glass, a kit may not seal it completely. If it is only a surface crack or shallow chip, a kit will work well.
Frequently Asked Questions
Will a windshield repair kit make the damage completely invisible?
A well-done kit repair will be much less visible than the original damage, but it usually will not be completely invisible, especially up close or in bright light. Professional repairs are more likely to be nearly invisible because they use better materials and equipment. The goal of a kit is to seal the damage and stop it from spreading, not to make it look perfect.
How long does the repair last after I use a kit?
If done correctly, a kit repair can last the life of the windshield. The resin bonds the glass together and seals out moisture, which prevents the crack from spreading. However, if the repair was not done well — if air bubbles were trapped or the area was not clean — it may fail within weeks or months. Professional repairs are more durable because they use stronger resins and better technique.
Can I drive when ready after using a windshield repair kit?
No. The resin must cure completely before the windshield is strong enough to drive on. Most kits require 24 hours of sunlight. Driving before the resin hardens can damage the repair or cause the windshield to fail. Check your kit's instructions for the exact curing time and do not drive until it is complete.
What if the kit repair does not work?
If the repair fails or does not seal the damage, you will need professional repair or replacement. The kit cost is lost, but you have not made the damage worse. A failed kit repair does not prevent a professional from doing the job later. Some people use a kit as a temporary fix while waiting for an insurance claim to process.
Does my insurance cover windshield repair kits?
Insurance does not reimburse you for buying a kit. However, most comprehensive policies cover professional windshield repair with little or no deductible. If your damage qualifies for professional repair, contact your insurer before buying a kit — you may get the repair done for free or very cheaply instead of paying for a kit yourself.