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How resolve back windshield coming un glued..

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178K views 101 replies 63 participants last post by  djkeev  
#1 · (Edited by Moderator)
Hi:

I have seen many posts about the back glass coming unsealed from the convertible top. How I feel your pain!

Several months after purchasing my 04 used and not under warranty, I experienced the same thing. And I was told the same thing by VW and a specialist that repairs convertible tops, "nothing we can do..you must replace the whole top!"

I refused to believe I would have to shell out $3,000 for a new top, when the top was PERFECT, except for the back glass coming apart around the sides and bottom.

Sooooooooo, I started researching glues and such. Surely, there HAD to be a glue out there that would bond canvas to glass and withstand high temps (I live in Florida), humidity, and water. I was told by the experts there was no substance, except what they used to seal them at the factory.

DON'T BELIEVE IT! I found the answer, re-glued my top myself (and I am not handy) and that was months ago. It is still holding strong, AND I managed to waterproof it too, so NO LEAKS!

So, here's the trick. Go online and purchase Rhino Glue, industrial strength! The staff is AMAZING! I use it on everything now!

Use a small paintbrush to apply (because it is very watery, like super glue). But it starts to set quickly. Unhook the top, start to open it, and then prop it open someway (I folded up a huge comforter, and stuck it between the opening of the top and the top of the windshield. This is so you have the play you need in the canvas to work on the top.

Seal one section at a time. As you seal it, use something heavy to lay over the canvas where the glass meets it (I chose to lay a towel over them first, then I applied paver bricks to hold the weight pressure).

Once you have sealed all sections, let it set up for a couple of days before you put the top back up.

Then go and purchase a black window seal. This is what will waterproof the glass AND makes it look more finished. If you don't apply it to perfect, no sweat, just take a razor blade and clean it up some.

This was a great fix for me, and under $100 at that!

I'll come back and include photos when I get a chance. Wish I had taken before shots, mine was 3/4's unglued.
 
#100 ·
Well........ lots of big thinking here!

I'm developing a plan based upon personal experience and reading others posts about resecuring the rear glass.

I'm familiar from past experience with 3M 08609 urethane adhesive. It is good stuff if you need to stick glass to something.
But........ it requires the Primer 3M 08681 or 08682. Two parts numbers I know, but the same stuff. Get the 08682 because it is a smaller container and this stuff does NOT keep long once opened! (A few weeks if you are lucky)
The primer promotes adhesion of the 08609 sealer to the glass and acts as a UV inhibitor for the sealant.
I've never used it on the canvas area but I plan to clean the canvas well and give it a try.
Use dry cleaning fluid or Brak-Kleen as a cleaner. Do keep in mind that all of these products give of noxious fumes...... so work accordingly.
Once I gather my supplies I'll post what I do.
Will it work?
I am confident that it will. The question is, for how long?
My top is aging (2006) so I really don't need but a year or two from the repair.
Just buy enough time to fix other issues and get a new top.
I've pretty much decided that the top will be an EZ or a Robbins, they have a good window seal system that they stand behind. Just a matter of fabric choices.
Other top sellers have better prices but I question the quality of them, especially the window seal.

Dave
 
#101 ·
Well........ lots of big thinking here!

I'm developing a plan based upon personal experience and reading others posts about resecuring the rear glass.

I'm familiar from past experience with 3M 08609 urethane adhesive. It is good stuff if you need to stick glass to something.
But........ it requires the Primer 3M 08681 or 08682. Two parts numbers I know, but the same stuff. Get the 08682 because it is a smaller container and this stuff does NOT keep long once opened! (A few weeks if you are lucky)
The primer promotes adhesion of the 08609 sealer to the glass and acts as a UV inhibitor for the sealant.
I've never used it on the canvas area but I plan to clean the canvas well and give it a try.
Use dry cleaning fluid or Brak-Kleen as a cleaner. Do keep in mind that all of these products give of noxious fumes...... so work accordingly.
Once I gather my supplies I'll post what I do.
Will it work?
I am confident that it will. The question is, for how long?
My top is aging (2006) so I really don't need but a year or two from the repair.
Just buy enough time to fix other issues and get a new top.
I've pretty much decided that the top will be an EZ or a Robbins, they have a good window seal system that they stand behind. Just a matter of fabric choices.
Other top sellers have better prices but I question the quality of them, especially the window seal.

Dave
Hey Dave,

I did this exact same repair with the 3m products 6 months ago, and it appears to be rock solid.
Couple of things to look out for.
- I sanded the black stuff off the glass first (some do this, some dont) but scratched the glass with the sandpaper - be careful of this as the scratches are permanent.
- I did the left side first, and used too much glue and a bit uneven, and it dried that way - it is difficult to get enough pressure to smooth out the 3m adhesive, so best to get a very even coat to start.

Not a concours finish - but from 2 metres + looks perfect.

cheers Digger