Autoglass Repair - Long Cracks

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Windshield Repair - Long Cracks
Windshield Repair - Long Crack Repair Directions
  1) Long Cracks
  2) Parts List - Pg 1
  3) Making the Repair - Pg 1
  4) Making the Repair - Pg 2


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Autoglass Repair - Long Cracks
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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Windshield Long Crack Repair:

Windshield Repair Instructions:

Repairs should be completed as soon after damage has occurred as possible to avoid allowing contaminants to get into the cavities and cracks of the damage especially waxes, soaps, and oils which could cause adhesion difficulties. The windshield should be shaded from direct sunlight until the entire repair is complete.
A successful repair is achieved when the repair resin has completely penetrated the crack, and the crack is not visible when examined at a 45 degree angle from the side of the crack. Poor results are achieved when the repair resin is applied too quickly, leaving air pockets, or when the repair is attempted on a contaminated crack.

The repair process may not be successful:
  • On cracks over 12 inches long.
  • For crack that extend to or near the edge of the windshield in two or more places.
  • If the crack is in the inner layer of glass.
Note: the optimal windshield temperature for most repair resins is between 50 and 90 degrees Fahrenheit, 10°C to 32°C. Temperatures outside this range on the low side will cause the resins to be too thick and cure or flow too slowly where temperatures above this range may cause the resin to cure too quickly.

Caution: it is important that the resin not come in contact with painted surfaces or any finished surface on the car as it could cause damage to the surface.

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