The Best Windshield Repair Kits

February 17, 2012

Windshield repair kits cost a fraction of what professionals charge for minor repairs. Learn about windshield repair kit components, prices, and usage.

Using a Windshield Repair Kit

Windshield repair kits make minor cracks, chips and spider-webs in auto glass easily repairable. These kits work fast and are very affordable. Three of the best windshield repair kits are Fix-a-Windshield, Permatex Bullseye Windshield Repair and Stoner Invisible Glass Windshield Chip Repair.

Fix-a-Windshield comes from the same makers of the popular Fix-a-Flat tire inflator. This product is easy to use and removes all air from the break to fill it with a strong, durable resin. The finished repair is supposed to be completely invisible. However, real-life tests show about a 95 percent transparency. Included in the kit is a one gram bottle of resin, repair tool, razor blade, curing strips and complete instructions. The repair tool is attachable to the windshield with for high-quality suction cups that secure it snugly over the damaged area. A few drops of resin are placed in the delivery tube and a pressure rod pushes it through to the glass. After 10 minutes and another drop of resin, the repair is covered with a curing strip. In another 10 minutes, the repair is complete. This product is very effective and adequate repairs take only a couple drops of resin. Fix-a-windshield has a list price of $19.48.

Permatex Bullseye Windshield Repair Kit
The Permatex Bullseye Windshield Repair Kit comes highly recommended. This kit is safe and easy to use. It comes with a .17 ounce syringe of resin and tools. The Permatex kit is a little messier than Fix-a-Windshield, requiring a steady, firm hand for application. This kit also takes a little more time for the resin to set and the repair to complete. If done properly, the results are clean and clear. The Permatex kit sells for $10.49.

The Stoner Invisible Glass Windshield Chip Repair Kit
The Stoner invisible Glass Windshield Chip Repair Kit is worth a mention for its high-quality results. The Stoner kit works similarly to the Fix-a-Windshield kit in that the resin uses vacuum pressure to remove air pockets and deliver the resin into the cracks. It is important to follow the instructions exactly. The resin dries in UV light from the sun, so it must be daytime and outside for the best results. Although the chips and cracks are not completely invisible, they are transparent enough so that they are noticed only upon close inspection. The Stoner kit sells for $12.95.

How to Use Windshield a Repair Kit

It is best to do this type of work on a sunny day. The resin needs to dry and the sun will make quick work of the drying process. If it is raining, the car must be inside. Clean the area of damage thoroughly, removing any debris or chips. Let the area dry. Have a rag or towel handy to clean up any spills that occur.

Remove the plastic disc from the kit and remove the backing. Apply the adhesive side to the windshield, making sure that the chip to be repaired is centered in the disc hole. Push down to make sure the disc is firmly attached to the windshield. Make sure the tabs are pointed upward.

Remove the backing from the top side of the disc so the pedestal can be applied. The syringe will fit in the pedestal. Align the tabs and firmly press the pedestal on to the disc.

Take the cap off of the syringe and firmly place it in the pedestal. Make sure the syringe is properly fitted in the pedestal by twisting it until it is fully in place. Pull up the plunger. This draws the air out of the crack. Release the plunger, injecting the resin into the damaged area. Repeat the plunging process about 10 to 15 times, to make sure the chip is completely filled.

The resin needs to dry for about 30 minutes. Keep an eye on the progress. If any air bubbles form, you need to repeat the plunging process until they disappear. Once the resin is dry, the syringe, pedestal and disc can be removed with a razor knife. Clean up any compound that spilled onto the windshield.

Related Questions and Answers

What Kind of Resin is Used in Windshield Repair?

With the incentive to make glass repair less expensive than glass replacement, chemical engineers have made resin windshield repair an excellent alternative. For repairing chips in a windshield, a desirable property is high viscosity (resistance to flowing) because it helps keep the resin stable. Resistance to shrinkage is another desirable trait for creating a tight bond in the glass. Methacrylate and acrylic acid are 2 substances common in the chemical makeup of synthetic resins. The acrylic acid causes a reaction with the other ingredients to form long molecule chains (polymers) which increase viscosity. Hydrogen, carbon and oxygen are common elements of polymer substances. The maker of Crystalene resin touts the advantage that a low viscosity resin can flow more easily into the "legs" of "star"-shaped cracks in window glass.

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