Jim Smart
September 14, 2007

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.

Side Glass
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.