Just had the windshield replaced
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Urethane or butyl tape? Especially in CA with all your regulations.......
Steve O.
Steve O.
In case you did not know, GM did not use butyl on these cars. It did not meet the MVSS requirements for glass retention. I can slightly understand a hobbiest believing everything they hear from cruise night scholars, but I've heard shop owners state butyl is original. Don't take my word for it, do the research yourself.
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I guess it's too late the glass is already in.
Im going to go with Butyl. Unless you mean what else they may have used and in that case I am going to go with glass. Its in two posts above yours.
In case you did not know, GM did not use butyl on these cars. It did not meet the MVSS requirements for glass retention. I can slightly understand a hobbiest believing everything they hear from cruise night scholars, but I've heard shop owners state butyl is original. Don't take my word for it, do the research yourself.
GM originally used Thiokol with a dam. There is a guy at CRG (Jeff) who sells kits or will do the correct installation for you. http://www.camaros.org/forum/index.php?topic=1854.0
I have not used him but the proof is in the photos. http://www.camaros.org/forum/index.php?topic=7255.0
I can't buy and install glass for what my local shop charges. They've been doing our glass for many years.
If a person chooses to use butyl that's one thing. But it's illegal for a licensed shop to use it. Unless someone knows of a state that has not yet chosen to enforce to use of urethane.
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Not disputing you Scott, but if it doesn't meet these standards, then why is it for sale legally?In case you did not know, GM did not use butyl on these cars. It did not meet the MVSS requirements for glass retention. I can slightly understand a hobbiest believing everything they hear from cruise night scholars, but I've heard shop owners state butyl is original. Don't take my word for it, do the research yourself.
I personally have put in a couple of windshields & a rear window with butyl. I know you have a glass guy do all your work, but for the home restorer, the ease of use of butyl tape is second to none. If you're not experienced with urethane adhesive, which I am not, all it does it make a huge sloppy mess & achieving the proper glass height is a crap shoot.
No thanks. Until my windshield flies out while I'm driving, I'm ok with butyl on my classic cars. :yes:
I said a licensed shop is not supposed to use it. What a private citizen does with a product, whether it's butyl or anything else does not matter. I'm sure the legalities are far more complex that depending on circumstances.Not disputing you Scott, but if it doesn't meet these standards, then why is it for sale legally?
I personally have put in a couple of windshields & a rear window with butyl. I know you have a glass guy do all your work, but for the home restorer, the ease of use of butyl tape is second to none. If you're not experienced with urethane adhesive, which I am not, all it does it make a huge sloppy mess & achieving the proper glass height is a crap shoot.
No thanks. Until my windshield flies out while I'm driving, I'm ok with butyl on my classic cars. :yes:
If you read the link I posted, the dam in the kit sets the height for the glass. I don't care what anyone uses. I know guys who use it. I'm providing data for those who wants to know the facts, history and options available. I used butyl 25 years and more ago. Then I switched. If you don't think you can lay a nice bead, then forget it. Even if If you don't use a dam the urethane primer establishes a straight edge anyway. The dispensor tip is cut to lay a trangular bead.
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My glass installer used a dam and depth spacers with urethane. He first applied about a 1 inch band of black primer around the perimeter of the glass. That hid the urethane bead and the pinchweld underside. He set the glass and quickly installed the trim to "push" the glass in place. Looks very nice in my opinion. I didn't use butyl because I was concerned about the exposed bead areas being sticky in the summer heat and collecting dust/lint.
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