Windshield Repair 201 - Making the Repair

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Windshield Repair 201 - Repair Instructions - Pg 2

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Windshield Repair 201 - Making the Repair
Learn how to repair windshields with our free course on Windshield Repair. Know which Windshield Repair Kits are available and which kits fit your repair needs.

Be informed by seeing a comparison of the kits and processes before you begin, and be able to determine whether a windshield can be repaired or needs to be replaced.

These kits are used to repair bullseye, spider web, star, chip, and combination windshield damage. Some kits can repair cracks. See kit comparison chart for specifics.

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Making the Repair:

  1. Install Resin Applicator in Base
    Insert the hollow Resin Applicator tube into the base and screw the threaded end clockwise until it just reaches the windshield glass. Check alignment over the center of damage by viewing the Rosin Applicator from inside the vehicle. Make sure the rubber tip is centered over the damage, and if necessary, adjust the device center by sliding the suction cups. Once centered, rotate the resin applicator clockwise to flatten the center lip against the glass but not too tight. It is important that you don't get this overly tight because it may close or tighten the cracks and make it difficult to get the resin to flow into the cracks and damaged area.

  2. Deposit Resin in Applicator
    To open resin container; remove cap from the container, and away from painted surfaces carefully cut off approximately 1/8 inch or less of the tube tip using the enclosed razor blade or a pair of scissors. Cut off only enough of the thin end of the tip of the resin container to open it.

    Deposit 3-6 drops of the UV repair resin (depending on the size of the damage) into the resin Applicator mounted on the windshield. Watch to see if any of the resin leaks from the bottom of the resin Applicator tip. If it does slowly lightly turn the resin Applicator clockwise, just slightly more than enough to stop the leak.

  3. Apply Pressure to the Resin
    Insert the resin driver into the Resin Applicator and screw it clockwise into the resin applicator and tighten it until the driver tip is almost screwed all the way in. This will press the tip of the resin driver into the rubber tip of the applicator which will begin to open the tip up to the width of the drivers tip. Check from inside the vehicle to see that the lips of the rubber seal have opened up wider. This will put the resin under pressure and drive the resin into the break in the glass. Allow the resin time to flow into the break, usually about 4-6 minutes depending on the size of the damaged area. If the resin hasn't flowed all the way into cracks and the glass is on the cool side, you can lower the viscosity of the resin by warming the glass with a hair dryer or hot air gun. Do not use excessive heat as this could cause the glass to crack further. You should not warm the glass above 85 degrees Fahrenheit. While you wait for the resin to be wicked into the cracks, you should make 1/8 to 1/4 turns on the resin driver every couple of minutes to reapply pressure to the rosin.

  4. Completing Repair Cycle
    After 5 or 6 minutes have passed with the resin under pressure, it is time to remove the resin driver from the resin applicator by unscrewing it, turning counter clockwise, which will release any air trapped in the resin application.

    Re-insert the resin driver and screw down again to displace any air remaining in the break.

  5. Checking Repair
    To determine if enough resin has been absorbed into the break to displace all of the air in the cracks, look at the cracks / glass damage from a 45 degree angle from each side of the crack or damaged points. In the case of chips or bull's eyes, also examine the glass from inside the vehicle directly behind the damaged area. If any air cavities remain in the damaged area, they will appear as dark green or black areas in the glass. Good clean repairs should not have any areas that are dark or have mirror like reflective regions and the cracks and damage should be very transparent from all angles.

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