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Old 05-03-2011, 10:27 AM
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Glass folks, I need some help, please :)

I am getting ready to put back the glass into my newly painted. chopped '31 A coupe. I bought some new U-channel rubber at Carlisle, but I have a few questions, if someone can help.
1. Obviously, there will be a seam where the channel completes its circuit around the glass. Does this go at the highpoint/top of each piece?
2.Do I put some kind of sealer/adhesive IN the channel before wrapping it around the glass? If so, what do I use-silicone,windshield adhesive or ?
3. Do I put some kind of sealer/adhesive between the rubber glass channel and the steel of the outer window frame when I put the glass in place? if so, again, what do I use?

Any other advice would be great. And thank you.
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Old 05-03-2011, 12:16 PM
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Don't know exactly what seam you are talking about unless it's where the rubber is bonded together, if so I would say bottom. 3m makes a product called bedding and glazing compound made for rubber installed glass (stays soft to allow for some movement) You can use it to seal both ,between glass and rubber and between rubber and metal. Pretty messy but cleans up with grease and wax remover. I'm sure there are products other than 3m just don't know what they are called.
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Old 05-03-2011, 12:44 PM
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Thanks. I guess by seam, I maybe mean "joint". Starting at point "A", I wrap around the glass with the channel back to where I started and now have to join end "B" to end "A". I would think I'd do that on the top side to make it as leakproof as possible?
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Old 05-03-2011, 01:02 PM
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The joint should be bonded, if possible, before you install it, with an instant glue type of adhesive. I would think the joint should be on the bottom for best leak resistance? Times I've seen sealant being used it is put in after the glass is installed, using a caulking gun and eurathane windshield sealer.
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Old 05-03-2011, 01:21 PM
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Personally I would use urethane windshield glue, no seam to worry about.

Vince
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Old 05-03-2011, 08:06 PM
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I think there's way to much of a space/gap between the car body-glass-garnish molding to fill up with just sealer.
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Old 05-03-2011, 08:58 PM
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Quote:
Originally Posted by 5window
I think there's way to much of a space/gap between the car body-glass-garnish molding to fill up with just sealer.
Can you use butyl windshield tape? It comes in various thicknesses.

Vince
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Old 05-03-2011, 09:07 PM
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You want to run a bead of urethane under the outside rubber flange after it's installed. Bit** to get out later tho.
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Old 05-04-2011, 07:31 AM
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1. Since you have a chopped top and the back window glass is smaller than original, the new rubber gasket will be too long.

2. Wrap the rubber gasket around the rear glass and cut it so that the total length is 1-2 inches short from the ends touching. Keep the cut ends as "square" as you can.

3. Remove the rubber and glue the ends together with a good instant glue type adhesive. Let it dry.

4. Install the rubber gasket with no additional sealer by stretching the gasket over the glass edge. The seam should be at the top and centered.

5. Rear glass with the gasket is now ready to be put in place. The inside molding is what holds the glass in place by applying pressure against the rubber gasket.

6. The side quarter windows are done the same way as above.

7. The procedure would be the same even if the glass was not "chopped".
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