How to Repair Minor Windshield Damage

There are various ways and several products available for both professionals and do-it-yourselfers to repair minor windshield damage. Resins, such as epoxy, are used to fill in minor chips and cracks. Auto repair kits can be purchased, usually for $15 to $30, and contain rubbing compounds and other items such as a suction cup, syringes and resin-based glue. The tools you'll need depend on the type of damage to your windshield. Small chips and cracks, variously referred to as bullseyes, half-moons and star cracks, usually can be handled by a DIYer. Major damage should be repaired by professionals.

Instructions

Using a Repair Kit

1

Remove any debris or chipped glass from the damaged area. Clean the windshield with soap and water and let it dry thoroughly. Don't try to repair a chip larger than a half-inch or a crack longer than two inches.

2

Apply the suction cup to the inside of the window directly over the chip to provide stability.

3

Lay the plastic or rubber disc over the damaged area on the outside of the window (remove the plastic backing first).

4

Punch a hole in the disc with the cone that's provided in the kit.

5

Insert the resin-filled syringe into the disc and slowly pull out the plunger to create an air seal. (You may have to add the resin to the syringe with some kits.)

6

Push the plunger back in to administer the resin. Watch the damaged area closely to ensure you don't over-fill the area. It's easier to add more resin than to try to remove excess glue.

7

Leave the equipment in place and allow the resin to dry for 10 minutes (or per the manufacturer's directions). Check for air bubbles in the resin. If any bubbles exist, smooth them out or remove the resin and begin again. Remove the plunger, disc and suction cup and allow the windshield to dry for at least four hours.

8

Clean the area around the repaired area with a razor blade. Use nail polish remover if necessary, then clean the windshield with glass cleaner.

Using Epoxy

9

Clean the windshield as instructed in the Repair Kit method.

10

Mix together the contents of the two tubes of epoxy per the instructions on the product. You need to mix the epoxies using the proper ratio.

11

Spread the epoxy into the chip or crack using a putty knife. Use the epoxy sparingly to avoid excess cleanup. Work the epoxy into the damaged area with the putty knife, smoothing and removing any excess epoxy. Wipe excess glue from the windshield with a rag soaked in nail polish remover or mineral spirits. Don't wipe directly over the chip. You can address any buildup with a razor blade when the epoxy dries.

12

Allow the epoxy to cure according to the manufacturer's directions, usually overnight.

13

Remove excess epoxy with a razor blade after it dries. Clean the windshield with glass cleaner and inspect the repair from both outside and inside the vehicle.