Has anyone ever used polyurethane adhesive to install a one piece windshield into a 1950 Chevy? What are the pros and cons? Anything I should be wary of? Thanks for the help
I suspect the pinch weld the current rubber gasket seals on is probably not wide enough to bond a windshield onto, unless by some strange chance the glass fits the current windshield frame perfectly. I've had a few windshields bonded in (not your specific Chevy), that were originally mounted with rubber. The original glass that is intended to be mounted in rubber will probably be too small. An over sized glass may work, but the bond could be risky. With each one I had to add a 1/2"- 5/8" metal lip all the way around the windshield frame for the glass to lay on (most pinch welds are 3/8" wide before the sheet metal curves away from the flat pinch weld seam). I was told that the bonded glass has to have a 3/8" - 1/2" wide surface to bond to that has to conform to the inside of the glass. Then some sort of seal (or urethane bead) has to enclose the edges of the glass so water can't get between the glass and plastic layers. My 48 Plymouth coupe has a 2 piece bonded windshield in it. I had to make a center support as well for it. That windshield was installed in 2011, and is still leak free. Its better sealed then any new rubber gasket mounted new glass I've ever had installed, before or after. But its a bunch of work to make it right.
X2 what Gene said. The "Oldsmobile" one piece glass is too small to lay over the pinch weld flange. Just look at the windshield gasket cross section and it will make sense why you can't bond it in, unless you extend the flange inward. Then you still have the gap around the outer edge to fill with something that the gasket previously covered. It's not flat glass, so there isn't an easy oversize glass.
Here is the hardtop, one piece windshield rubber: https://www.chevsofthe40s.com/detai...Piece_Windshields_CVT_and_HTP_W_Moulding.html
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