Auto Glass Repair - Introduction to Windshield & Autoglass 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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Windshield Repair 201:
This is a short course in the art of windshield repair. It is intended to
illustrate the techniques used by professional windshield repair professionals
and allow anyone to successfully repair their own windshield.
In this introduction you will learn the basic techniques that can be followed
while using economically priced kits available online and at your local
automotive parts suppliers. You will also have enough information to evaluate
you're your windshield and choose a kit appropriate to your repair needs.
The following section covers repairs to small or round crack damage using
pedestal resin delivery systems and in later sections will continue on through
other type resin delivery devices and repairing long cracks. You should first
become familiar with the items and method required to complete repairs on
windshield damage such as bullseye cracks, star cracks and windshield chips
up to 1 1/4 inches across.
Understanding how to repair a windshield starts with an understanding
of the construction of a windshield and what will be accomplished when
using the repair methods demonstrated in this guide.
Windshields are laminated safety glass. They are made with two layers
of tempered glass with a sheet of polyvinyl butyral (or PVB) plastic sandwiched
in-between.
Most stone damage occurs as a break in the outer layer of glass and is
visible due to the air that enters the cracks or void of the break. Windshield
cracks left unchecked usually continue to grow with an increased growth
rate as they get larger until the
crack makes its way all the way across the windshield.
The object of a repair to the damage is to fill the break with resin removing
the air pocket making the crack no longer visible and strengthening the
glass to prevent the crack from getting any larger. Once the cracks are
stabilized by the adhesion across the cracks by the polymer rosin they
generally will not grow any larger.
There are several options to be aware of with respect to the methods supplied
with the range of kits available for windshield repair. The information
in this section labeled Windshield Repair 201 is focused on making use
of kits that provide a UV resin and utilize a Bridge type resin injection
device. Within the course series, you will also be introduced to processes
that us two part resins and modified Syringe type injectors. Note; you
can use a two part resins or a UV activated resins with either of the
two injection devices, Syringe or Bridge. There are advantages to each
of the combinations of resin delivery devices and resin types.
The main difference between the two types of resins is the method required
to cure the resin. The two part resins have an advantage that they don't
require any sunlight or UV lamps to cure. This is advantageous in that
you can complete the entire process indoors, at night, in winter or summer,
and bad weather is not a problem. Once the two parts of the resin has
been mixed, it had a definite working time and set up time. Temperature
is the primary factor that will speed up or slow the curing process.
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