Butyl tape or ureathane?

[chargin']

I'm soon going to install the rear glass in my '69 Super Bee. How do you feel about or any pros or cons to using either butyl tape or urethane? It doesn't need to be done how the factory did it for originality reasons.

 

[snakeoil24]

Prime the glass and make sure window opening has primer. then use liquid Urethane from 3M.

 

[mmissile]

It doesn't get much simpler than the original butyl-tape set.

 

[Yatzee]

Stop and ask yourself one question: "Why don't they use butyl tape anymore?."

 

[mmissile]

cause squirting stuff at the factory is faster, easier[robotic] and cheaper. I worked auto glass for a few years....and used plenty of both. Nothing like getting oozing crap all over the place.

 

[Michael789]

Actually butyl tape is not a great choice for installing any kind of windshield or back glass in a car or truck,butyl won't hold the glass in the event of an accident,that's why car MFG's stopped using it,it's also against the law I think too but I'm not 100% sure on that. You can use butyl for sealing water leaks and stuff like that but not as a bonding agent to hold the glass in.

 

[Beekeeper]

If you want the window trim to fit correctly you better make sure and set the window at the right depth. That's the biggest advantage to using butyl tape
if my memory serves me right the 3/8 tape is just right when using the urethane
you have to have a way of controlling the depth.

 

[Gpuller]

Use urethane, pretty sure butyl is illegal to set glass with anymore. For sure it is for windshields, may vary by state.

 

[idrivemopar]

I did butyl on my rear glass and so make sure you have it lined up perfectly before you stick it, because once its makes contact its stuck! I did urethane on the windshield and it turned out very nice. No issues with the molding either.

 

[mmissile]

New cars don't use butyl, as the glass is used as structure in these newer cars. When something is made of foil thin metal and plastic, everything becomes structure.

 

[Big D A12]

I used the butyl tape (5/16) to get the proper look through the glass from the outside. It also ensures the trim will fit properly, which is installed right after the window.

The installer I hired set the glass on the butyl and then sealed the external edge with the urethane product. Don't forget the spacer blocks before you set the glass in!

Here is a thread that was on another site for reference. Hope this helps.

D

http://a12mopar.com/yabb/YaBB.pl?num=1403088250

 

[chargin']

Thanks for all the reply's,I'm leaning toward the butyl tape,afraid about the depth for the molding to fit nice.

 

[Lionized]

Thanks for all the reply's,I'm leaning toward the butyl tape,afraid about the depth for the molding to fit nice.

5/16"

 

[dave5237]

I did several dry runs by setting it on 5/16 o.d rubber hose to simulate the butyl tape to see where it would land ( height wise). Used the spacers and left them in. Make sure the spacers dont get in the way of your clips. checked my depth of my trim pieces.

 

[Speedbird]

Thread hijack.
Sort of.
So his 69 Bee doesn't use a rubber gasket?
It just sits on the body?
I'm going to do a 67 Charger and when I pulled the old rubber out it had plenty of non-setting butyl under the rubber.
It appeared to be tape.
I know I should put the new rubber on the glass, insert rope/string in the grove, lay it in the hole and pull the inner lip in and over the fence from inside the car.
But other than putting very little butyl around the very edge of the rubber prior to installation, I can't see how in the world Chrysler got that much butyl under the original rubber unless they injected it after installation?
In other words, I can't see the tape staying in place as the rope is pulled.
Am I missing it?
Anyone know?

 

[Lionized]

Thread hijack.
Sort of.
So his 69 Bee doesn't use a rubber gasket?
It just sits on the body?
I'm going to do a 67 Charger and when I pulled the old rubber out it had plenty of non-setting butyl under the rubber.
It appeared to be tape.
I know I should put the new rubber on the glass, insert rope/string in the grove, lay it in the hole and pull the inner lip in and over the fence from inside the car.
But other than putting very little butyl around the very edge of the rubber prior to installation, I can't see how in the world Chrysler got that much butyl under the original rubber unless they injected it after installation?
In other words, I can't see the tape staying in place as the rope is pulled.
Am I missing it?
Anyone know?

Urethane with rubber seal for windshield, butyl for rear glass. Primer for both.

 

[texas69bee]

 

[Speedbird]

Thank you. That appears to be an A body and uses the locking ribbon.
So I'm guessing that's why they put the rubber on the car first and shoe horned the glass into the rubber. The rubber has some room to play around since it has a channel for the locking rope.
I've done that on A bodies and used polyurethane between the rubber and car.
This basically glues the rubber in and I've been able to swap windshields without disturbing the rubber.
That back glass on the Charger is going to be a bear.
I'm dreading installing it. I plan to use the rope trick and hope.
Unless Chrysler was able to do it like in the article, I don't know how they got the non-setting butyl between the back glass fence and the rubber.

 

[mmissile]

They used liquid butyl and bedding compound. The bedding compound was messy, but did a good job of sealing the stuff. Most of the older materials seem to be long gone.

 

[Meep-Meep]

I can see the case for urethane instead of butyl or any modern product designed for reliability. To deal with the height why not make some spacer/set blocks out of rubber hose or thick gasket material and glue into place. First glue the set blocks in with the urethane and when it cures do a trial fit. If all is well lay down a bead and pop it in.