All You Need to Know About Windshield Repair Resin

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Whenever you use any windshield repair kit, it comes with a resin. Resin is basically the “glue” that holds the broken or cracked windshield together. All the windshield repair kits include this resin, which you use according to the instructions.

Resin is a substance that can repair your windshield and helps you save a lot of money. A good quality resin, if used properly, will make your windshield as strong as the new one. There are different kinds that resin that are used according to the damage. If you have a kind of damage in your windshield that you don’t recognize, do seek a glass repair specialist’s advice. Your windshield plays an important role for the structural safety of your vehicle.

Different Types of Windshield Repair Resins

Like I mentioned before, there are different kinds of resins that are used to repair cracked windshields. One important feature of resins that we need to be aware of is its viscosity. Viscosity, also called the “thickness” of resin, is very important. Small and shallow damages can be cured with low viscosity resin. However, deeper and bigger damages require higher viscosity resin.

The viscosity of resin is measured in cps (centipoise) units. It can range from 20-1500 cps. Lower number means lower viscosity.

How to Use a Resin to Repair Car Windshield

When you purchase any windshield repair product, resin is usually included in the package. It is the core component, and repair isn’t possible without it. Usually, resin is loaded into a special syringe or other instrument, which is then used on the damaged area.

The viscosity of the resin used is determined based on the damage. Deep cracks require viscous resins for proper repair. Once it is applied using appropriate tools, curing process begins. Most resins require ultra-violet (UV) light for it to fix. In most cases, sunlight is sufficient enough to cure the resin. However, in cases where you are short-on time, you can use specialized UV lamps to make the process go a little faster.

When using windshield repair kits, curing resin is the only part that takes time. You just have to wait until the crack is fixed properly. Generally, curing can take anywhere from 5 minutes to 1 hour. A good estimation of time it take to repair is usually provided on the kits.

Low Viscosity Resins in Most Glass Repair Kits

Most DIY repair kits that are available in stores contain low viscosity resin. Substance of such viscosity are good enough to repair minor damages. They can also repair scratches and small chip damages. If you would like to repair larger cracks and chip damages, you need you buy a good quality, professional kit.

Nowadays, there are many good quality repair kits that are available online for you to purchase. If you go over to our home page, you will find all kinds of windshield repair kits. Select the one based on your needs. Many people, including myself, have used them in the past with great success.

Many professional repair kits come with enough resin to do about 100 repairs. If you need more resin, it is available online and at nearby glass repair shops.

Where to Buy Quality Resins for your Windshield Repairs?

Good repair resins are hard to find. If you go looking for them in automotive stores, and came across inexperience staff member, you will have trouble finding a quality resin. Your best bet is to buy windshield repair resin online from a trusted source such as Amazon or Ebay.

In conclusion, I hope this article helped you understand different types of resins used when it comes to repairing windshields. If you have any question, feel free to share them with us via the comments below.


What are some of the best windshield repair resin companies?

BBear, Clearshield, Glasweld, Glass Mechanix and American Windshield Repair Systems make some of the best repair resins out there. Most of the windshield repair kits come with these resins to perform a few repairs.

How much does the windshield repair resin cost?

The cost of repair resin varies from brand to brand. On average, you should be able to find a decent windshield repair resin anywhere from $10-$50.
It’s important to consider the quantity of the resin when you make a purchase. Some kits comes with small amounts of resin to make a few repairs. Whereas other may contain enough resin for 100 repairs. So the price you pay will be determined by such factors.

How is resin used to repair windshield?

Windshield chips and cracks are repaired by applying the resin to the crack using an injector system. Most DIY windshield repair kits come with their own injector system, but they can also be purchased separately.

Can windshield repair resin be used to repair long cracks?

Yes. Windshield repair resins can be used to repair long longs and professionals use them for every single repair. Please note that most DIY windshield repairs are not suitable to repair long cracks. It’s important to read the instructions carefully if you are attempting to repair cracks by yourself. If the crack is not cleaned and vacuumed properly, the resin might not flow across the crack. This will result in a bad repair and you may need to replace the windshield entirely.

Can you remove windshield repair resin once it’s applied to the crack?

The simple answer is no. Once resin is cured, it’s very difficult to remove is from the windshield glass.

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3 thoughts on “All You Need to Know About Windshield Repair Resin”

  1. In your article, you stated that if you have a kind of damage in your windshield that you don’t recognize, do seek a glass repair specialist’s advice. My brother was coming home from the gym last night and a huge rock flew into his windshield and left a big crack. I wonder how they determine if the windshield needs to be replaced or repaired.

  2. I never knew that resin was a the glue that held the cracked windshield together. A bird accidentally hit my window and left a nasty crack right down the middle. I haven’t been sure of how to go about fixing it, but now I think I have a better idea of how to patch it all up.

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