I had to pull the front and rear glass to replace the headliner in my 68. Anybody know where I can get the factory type windshield sealant. Or should I use something else? I don't want it to turn into a solid glue type sealant so If I have to pull the glass for some reason it won't be a huge hassle.
best way to seal the windshield/back glass?
- Thread starter DarkoStoj
- Start date
They still make the proper sealant. It is not the current stuff that is used to glue in glass with no gasket/weatherstrip though. You cannot use a urethane based glue as it hardens and then does not stick to the rubber gasket. The stuff you need is a non-hardening type of sealant. You will need to call a local glass place and ask them as I do not remeber what brand I used on my T-Bird. You will also need an applicator more than likely as I have not seen this stuff come in a caulk tube.....but that does not mean it doesn't.
JC6715
Member
I picked up some Butyl Rubber in a caulking tube from my local Ace Hardware store, so it's out there you just have to find it...
reenmachine
20+ Year Stangneter 
The real stuff you want is 3M Bedding & Glazing Compound. In the tube that goes into a caulking gun it is part # 08509. Any auto body supply store should have it.
Tim65GT
Active Member
I had a local auto glass shop install my windshield and they used a hardening type of sealer on the gasket to glass channel. It wasn't silicone, but a little firmer (butyle?).
And on the Gasket to Metal opening Gasket Channel they used the non-hardening gooey stuff, like 3M seam sealer.
It seemed to work great, no leaks. 3 years later, I replaced the headliner and had the rear window replaced by Safelite, who came to the house. He installed the rear glass and helped me re-install the front glass.
He insisted that with the rubber channel type gasket, it doesn't need any sealer. YEAH, RIGHT.
The first time I was caught in rain (rare around here...usually) THEY BOTH LEAKED!
I am also wondering what product is the best to use.
And on the Gasket to Metal opening Gasket Channel they used the non-hardening gooey stuff, like 3M seam sealer.
It seemed to work great, no leaks. 3 years later, I replaced the headliner and had the rear window replaced by Safelite, who came to the house. He installed the rear glass and helped me re-install the front glass.
He insisted that with the rubber channel type gasket, it doesn't need any sealer. YEAH, RIGHT.
The first time I was caught in rain (rare around here...usually) THEY BOTH LEAKED!
I am also wondering what product is the best to use.
Tim65GT
Active Member
reenmachine
20+ Year Stangneter
Yes, they will tell you this but don't believe it! After many years and countless windshield replacements, here is the technique that works best for me:Tim65GT said:
1. Thoroughly clean the area the windshield sits on and the lip it grips. Chunks of old crap here will cause leaks almost no matter what else you do.
2. Install the rubber seal onto the windshield. Run a length of clothesline through the channel that will grip the car and leave the ends hanging out.
3. Lay down a good bead of 3M Bedding & Glazing Compound on the outside of the lip and in the corner area.
4. Lay the windshield/seal assembly on the lip. Get inside the car and pull the ends of the clothesline to work the rubber seal around the lip.
5. From the outside, inject 3M Bedding & Glazing Compound between the seal and the glass all the way around.
6. Clean up the excess goop with some wax & grease remover or something similar. A razor blade scoops up most of it nicely.
I've never had a windshield leak using this method. The 3M product stays soft forever, so as the car and the glass move, expand, contract, etc. it will stay sealed. I use 2 full tubes of the stuff on a windshield install. Don't scrimp on it.
Tim65GT
Active Member
Thanks, I'll look for that stuff. Is it in a regular size caulking tube? (14 oz IIRC)
two tubes seems like a lot
two tubes seems like a lot
reenmachine
20+ Year Stangneter
They are 10 oz. tubes. Two tubes is a lot. I hate leaky windshields.Tim65GT said:Thanks, I'll look for that stuff. Is it in a regular size caulking tube? (14 oz IIRC)
two tubes seems like a lot
