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Dynamat and bubbling?

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Old Jun 27, 2018 | 08:15 AM
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Default Dynamat and bubbling?

I’m not sure if this is more of a Paint/Body question, but I figured somebody here may have insight:

We’re all familiar with the bubbling roofs due to adhesive working it’s way through the fiberglass roofs that weren’t primed from the factory:

But will the adhesive in Dynamat, or the like, work it’s way through a fiberglass door at all?
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Old Jun 28, 2018 | 02:40 AM
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My entire car is dynomatted and have seen no issues at all from doing so (been on it for 10 plus years)
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Old Jun 28, 2018 | 08:49 AM
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Originally Posted by klinznilk
My entire car is dynomatted and have seen no issues at all from doing so (been on it for 10 plus years)
I figured it may be fine.... but I’d hate to have to buy new doors to fix bubbling!

what year is your car, if you don’t mind me asking?
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Old Jun 28, 2018 | 09:06 AM
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It's an 2002
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Old Jun 28, 2018 | 09:08 AM
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Originally Posted by klinznilk
It's an 2002
Perfect. That makes me feel much better than if you said a 98!
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Old Jul 2, 2018 | 10:32 PM
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The issue wasn't that the panels were bonded together, but that they were primed with the wrong primer while being bonded. I would think that panels that haven't bubbled yet (excluding 99+ sail panels) won't be bubbling due to the adhesive issue and adding other pieces shouldn't affect that either but you raise a point I have never thought of before!
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Old Jul 3, 2018 | 04:31 AM
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Originally Posted by 1bdbrd
The issue wasn't that the panels were bonded together, but that they were primed with the wrong primer while being bonded. I would think that panels that haven't bubbled yet (excluding 99+ sail panels) won't be bubbling due to the adhesive issue and adding other pieces shouldn't affect that either but you raise a point I have never thought of before!
My 2001 hardtop is bubbling. That’s why I’m a bit nervous to dynamat the door!

I’m not sure if any other fiberglass panels are missing the correct primer, or if the adhesive in dynamat is anything similar to the adhesive used to secure the hardtop panel on.
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Old Aug 25, 2018 | 05:58 AM
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Originally Posted by 1bdbrd
The issue wasn't that the panels were bonded together, but that they were primed with the wrong primer while being bonded. I would think that panels that haven't bubbled yet (excluding 99+ sail panels) won't be bubbling due to the adhesive issue and adding other pieces shouldn't affect that either but you raise a point I have never thought of before!
GM using a different glue from 98-2002 which melted through the panel plus the issue that the roof panels were not primed in the first place speeded up the process of the bubbling
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