How To Replace Window Glass
Here Are Some Tips For Purchasing And Installing Vintage Mustang Windshields, Backlights, And Side Glass
Around 1960, automakers began installing laminated windshields in the interest of safety. It's layered-a sandwich of glass with PVB plastic in the middle. During an accident, it starbursts and cracks, but it stays together to prevent injury.
A Word About Sealers
John Sloan at The Eastwood Company set us straight on windshield sealer. There are two basic types-soft and hard. Rubber gasket windshields and backlights call for the soft stuff known as 3M Windo-Weld Resealant (PN 08634), which is the nastiest sealer to work with. It's black and gooey-use it sparingly and watch where it drips. Despite the mess, it seals well and cures to a flexible consistency. It moves with the glass and gasket without cracking and tearing.
For glue-in windshields and tempered side windows, use 3M's Windo-Weld Primerless Super Fast Urethane (PN 08609). Super Fast Urethane is a glue and sealant. When it cures, it bonds like no other. Count on security and sealing with this. Don't use Super Fast Urethane on a rubber gasket windshield or backlight. Use it only where glass is to be glued in place, such as tempered-glass side windows.
Another brand of sealer for rubber gasket windows is R900 from Adcoseal, available from most autobody paint supply stores. It works the same way as 3M's Windo-Weld Resealant. It's nasty but effective if you use it properly.
Wing, side, and quarter-window glass replacement is straightforward once each assembly is removed. Due to space restrictions, we can't go into the step-by-step removal and installation, although we show how each window type is assembled. Quarter-window glass is easy to replace once you get it out. The quarter-window frame is a combination of stainless steel, chrome-plated die-cast metal, and rubber. A flexible gasket provides a cushion between the glass and frame.