There are a variety of different ways that windshields and other fixed windows are held in place in new and older vehicles. Classic Cars prior to 1970 are likely to use a bitumen tar like substance that is placed in the windshield channel in a 1/2 inch cord shape and then the windshield is pressed in place. You will also see vehicles that have a rubber retaining molding. This is often used on late 80’s and 90’s trucks and vans.

New vehicles and classic cars that have been restored will use a Urethane Adhesive which is …