What kind of glue is used to install windshields?
The glue, or urethane as it is called, is a very important safety feature for your windshield. The urethane must be strong enough to keep you inside the car in the event of an accident without a seatbelt. Many of the urethanes used for windshields in recent years have a pressure rating of 500 PSI or more. Many years ago, the urethane used for this process was made from butyl, which has a pressure rating of 50 PSI, at best.
