Vintage Ford windshields and backlights are a great challenge when it comes to leak-free performance. Our '65 Mustang is a case in point. Despite our best efforts during windshield and backlight installation more than a year ago, they both leaked during the cars first wash. You can imagine the language.
We decided to call the auto glass professionals at Autoglas 1 in Simi Valley, California, for insight into old rubber gasketstyle windshields and what can be done to make them leak-tight. Unfortunately, rubber-gasket windshields tend to be leakers, no matter how much you do to make them leak-tight. Autoglas 1 suggests close attention to detail and a new rubber gasket when its time for windshield replacement. In fact, Autoglas 1 will not warranty a windshield against leakage unless you supply a new gasket with the job.