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Tue Sep 13, 2016 4:04 pm

Hello,

What glue would you suggest to reattach the vinyl/leatherette on the bottom of the passenger's side B-pillar (original fire extinguisher location)?

It's quite impossible now to do a good surface preparation on both the metal and the vinyl, and whatever I've tried (Lepage contact, 3M Super 77) turns to goo in hours or days, probably due to some kind of chemical reaction with prior glue.

What's next? Silicone?

Thanks,

JMR

Tue Sep 13, 2016 4:58 pm

exactly what I am dealing with. appliction of new adhesives have failed. what to remove the old adhesive with, without harming the material?

I have had no luck with any of the contact type adhesives, and I have tried several brands. it will hold tight for a short time, then peels back magically after a while, days or weeks later.

I think acetone might remove the glue, but it probably aint going to do the vinyl any good.

Tue Sep 13, 2016 5:44 pm

the 3M professional adhesive in a spray can is the best. Spray both sides, let the carrier fladh off for about 30 seconds, then stick it to the surface and tape it there for amcouple of days.

Tue Sep 13, 2016 6:44 pm

tschroeder0 wrote: the 3M professional adhesive in a spray can is the best. Spray both sides, let the carrier fladh off for about 30 seconds, then stick it to the surface and tape it there for amcouple of days.

tried that, did not work, problem seems to be the old glue that cant be removed from the vinyl easily.

Tue Sep 13, 2016 6:54 pm

Somebody mentioned in another post on another subject that Xylene was a good solvent for the adhesive VW used on the interior coverings. Though he mentioned that it worked best if the adhesive wasn't allowed to be exposed to to UV for too long as it seemed to have a hardening effect on it. Can be had at Lowe's.

Tue Sep 13, 2016 6:56 pm

Time to watch some television.

Catch the new (pretty ) Loc-Tite ad.

They got some stuff that will glue anything together that displaces moisture, and is bullet proof.
You'd never get that vinyl away from the metal again--ever--
Plus it's ballistic drying time.

El Permanento.

Home Depot has it.

Tue Sep 13, 2016 9:03 pm

You need an adhesive remover to clean the surface. 3M products work.

http://www.oreillyauto.com/site/c/search/Adhesive+Remover/N1833/C0171.oap

Tue Sep 13, 2016 9:21 pm

I'm interested in a solution as well. I've tried several things that all failed with reasonable prep - not perfect as I couldn't fully remove it. Including the 3M professional adhesive, etc. Automotive interior heat is rough on things. I will look into the TV stuff.

Wed Sep 14, 2016 4:13 am

IdahoDoug wrote: I'm interested in a solution as well. I've tried several things that all failed with reasonable prep - not perfect as I couldn't fully remove it. Including the 3M professional adhesive, etc. Automotive interior heat is rough on things. I will look into the TV stuff.

That's surprising 'cause the 3m stuff works really well. :(

Wed Sep 14, 2016 8:04 am

Doug: could you share a bit more on what you tried so far?

Despite the numerous adhesives on the market, I feel that they all boil down to very few different basic chemicals. We have to find one that doesn't react with the residues of the original glue, since we won't be able to get it all out of the fibers backing of the vinyl.

That's why I'm thinking silicone. From what I read on various manufacturer's website, it sticks to metal and is stable at high temperature. But having sprained an ankle yesterday, I truly deserve to be called an armchair mechanic for now.

http://www.loctiteproducts.com/p/cntct_silicone/ov...ealant.htm
http://www.gorillatough.com/gorilla-sealant
https://www.permatex.com/products/adhesives-sealan...e-sealant/ (site currently not responding, but google cache version is here).

Wed Sep 14, 2016 1:32 pm

You need the right adhesive.... This...... IS it!

Quotes from http://www.thesamba.com/vw/forum/viewtopic.php?t=5...p;start=80

djkeev wrote: Looky! Looky! :lol:

Look what "Brown" (UPS) just brought me! (31 Hours after placing the order! Gotta LOVE Grainger!)

I wonder what I'm doing tomorrow? :wink: ......... Maybe tonight if I'm too excited to sleep! :-k

Now........ Where's my SEM Cordovan Brown that I ordered 32 hours ago???

Dave

djkeev wrote: Merian wrote: I bet that pint/quart rule is an attempt to keep it out of the hands of untrained amateurs, who are more likely to buy a small amt. Note the advisory on the can in your pic. It's likely pretty toxic so read the msds carefully. Or maybe they just made that legal part up...

Ok...... Let me interpret all of this paperwork for you......

IF YOU OPEN THIS CAN YOU WILL SURELY DIE!!!!!!!!!!!

Dave

Wed Sep 28, 2016 1:26 pm

Update...

I ended up asking 3M technical support, and quickly got an amazingly detailed reply:
Quote: Based on your description below it sounds like the issue is with the vinyl and not with the sheet metal.

There are plasticizer additives in vinyl that make it difficult to bond to over the long term, especially if exposed to direct sunlight. The glue turning to mush is a classic symptom of plasticizer migration. You need an adhesive that is plasticizer resistant.

The product that we suggest you trial would be our Rubber and Vinyl 80 Spray adhesive. This is formulated to tolerate the additives in vinyl. On the sheet metal side, I am assuming that it is painted. Please note that the surface should be clean and dry and any waxes should be cleaned off.

Please find more information on the product below. If you have any more questions, please let us know.

http://solutions.3m.com/wps/portal/3M/en_US/Adhesi...amp;rt=rud
From there, the following links were enlightening for me:
https://en.wikipedia.org/wiki/Plasticizer
http://multimedia.3m.com/mws/media/682505O/3mtm-sprayable-adhesives.pdf

That glue seems almost impossible to find in Canada if you don't want to buy a case, but a local mom & pop tool shop just ordered one for me at a reasonable price from SCN. For US folks, it is listed on Amazon and Home Depot.

I didn't find glues from other manufacturers that are specified as plasticizer resistant. If you find some, please list them.

I should receive it next week. To be continued...

Wed Sep 28, 2016 8:01 pm

I’m feeling lucky that my 85 did not have material there. Just metal.

Thu Sep 29, 2016 5:38 pm

Future glue is what you need....I found some at Big Lots.

Thu Sep 29, 2016 6:03 pm

I used loctite vinyl, fabric and plastic adhesive with success for that spot. I did put a board that there with a clamp for several hours. It's still stuck after one year.

Thu Sep 29, 2016 9:16 pm

Power Grab--

Thu Sep 29, 2016 11:56 pm

JM,

Apologies for not checking in up there. I used a high end automotive contact cement, the 3M stuff and something else I can't recall. I once found a Vanagon in the u pull with a damaged headliner my color and cut out a big chunk. So, I had a tear or two here and there and glued carefully cut patches before I hosed the whole headliner down with an excellent vinyl dye. It looks really awesome - except where a couple patches let loose. Grrr. So if yours works, I will get those pieces cut from my big swatch for the corner of two windows where the issue happened and respray! Back to show-grade! Cough...