Whats the difference between glass in a windshield and other window glass?
Auto glass is designed and manufactured for optimum safety in the event of a crash. Your windshield is made of laminated safety glass. The side and rear windows are made of tempered glass. Laminated safety glass is two pieces of glass with a layer of vinyl sandwiched between, so it will stay intact in a collision. Tempered glass has been treated to make it much stronger than other glass of the same thickness. If it breaks, it is designed to shatter into small pieces.