The purpose that glass serves in an automobile goes far beyond how it makes the car look. The glass serves as a barrier to the elements and insects. It is also a barrier for passengers who may be thrown out of the car. Properly installed glass supports the roof of a vehicle as protection in the event of a rollover accident. In addition, auto glass aids the accurate deployment of side air bags. Improper installation or poor-quality supplies could mean life or death to a vehicle owner.
Auto Glass
There are three types of auto glass used for installation. Dealer auto glass is purchased directly from the automobile dealership. Dealer auto glass comes from an Original Equipment Manufacturer (OEM) distributor that originally manufactured the glass. This glass usually has the make of the vehicle stamped on it. OEM distributor glass does not always have the same distributor. but is made to the same specifications as dealer glass, such as thickness, color and durability. Lastly, aftermarket auto glass is made by companies that have not acquired the legal right to make the glass with OEM distributor specifications. Although it is cheaper, it is not accepted by dealers because it does not carry the same guarantees as OEM auto glass.
Windshield Urethane
A high-quality urethane adhesive must be used so that the car bonds tightly to the auto glass. The U.S. Federal Motor Vehicle Standards requirements should be met or exceeded by the manufacturers of urethane used to install auto glass. OEM specifications must also be met with regard to urethane usage. In vehicles with aluminum bodies, such as late-model BMWs and Mercedes, low-conductive urethane is required in order to keep electrical currents from entering through the glass into the body of the vehicle.
Sealant
A high-quality sealant is important in auto glass installation. Substandard sealants allow dust, air and water to enter the car. In addition, sealants which are inferior will become tough and eventually harden and crack, breaking the seal. Sealing compounds should create a superior bond between the glass, whether it is bonding to metal or rubber.
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