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-   -   Dashboard Re-covering/Reupholstering (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/dashboard-re-covering-reupholstering-1144842/)

StaticX27 06-24-20 06:47 PM

Just as kind of a thing, most upholstery videos I've seen use a pretty thick glue instead of spray adhesive. Personally in projects, I never use spray adhesive unless it's just for a quick, temporary or one time use item. Like attaching templates to a piece of work or something like that.

This dude had the most amazing video on reupholstery I've found. No sound though :p

EDIT: Looks like it might be contact cement instead of glue... Not sure!

Oppai 06-24-20 08:15 PM


Originally Posted by StaticX27 (Post 12420323)
Just as kind of a thing, most upholstery videos I've seen use a pretty thick glue instead of spray adhesive. Personally in projects, I never use spray adhesive unless it's just for a quick, temporary or one time use item. Like attaching templates to a piece of work or something like that.

This dude had the most amazing video on reupholstery I've found. No sound though :p

EDIT: Looks like it might be contact cement instead of glue... Not sure!
https://youtu.be/IaSm3zoWrAo

I saw that exact video before starting this and decided against using that glue. Hindsight is 20/20 I guess. With the experience with this process I have now I would definitely use the brush on application upholstery glue, but this purpose formulated 3m product had 4000+ positive reviews on Amazon and seemed like a more clean and convenient way to do it at the time.
Lesson learned! There's always a next time.
Definitely wasn't expecting a professional grade result my first go at it.

SpinningDorito 06-25-20 12:18 AM

The spray you linked from Amazon only seems to be rated up to ~160F from what I can tell.

That may seem high, but I am not sure what temperature a black dash experiences baking in the summer sun. I know down here 160F wouldn't cut it at all for anything inside the cabin regardless if its a spray or brush application product. 3M should have a higher temperature spray that won't fall apart in the heat like this.

Oppai 06-25-20 04:00 PM


Originally Posted by SpinningDorito (Post 12420352)
The spray you linked from Amazon only seems to be rated up to ~160F from what I can tell.

That may seem high, but I am not sure what temperature a black dash experiences baking in the summer sun. I know down here 160F wouldn't cut it at all for anything inside the cabin regardless if its a spray or brush application product. 3M should have a higher temperature spray that won't fall apart in the heat like this.

Where exactly did you find that temp rating? It wasn't written on the can or the amazon listing.
Can't imagine this would be any good for headliner either if its failure point is 160F. Definitely have seen cars with interior air temps of 160 in the summer.

SpinningDorito 06-25-20 04:17 PM


Originally Posted by Oppai (Post 12420479)
Where exactly did you find that temp rating? It wasn't written on the can or the amazon listing.
Can't imagine this would be any good for headliner either if its failure point is 160F. Definitely have seen cars with interior air temps of 160 in the summer.

It is posted by 3M in the Q&A section of the listing:

"This adhesive has a Service Temperature range of -30 - 160F. For higher temperatures (up to 200F) use PN08090 3M Super Trim Adhesive."

I've always been able to find the temperature specs for their other spray glues online, but for whatever reason they don't ever seem to list this one anywhere clearly.

SpinningDorito 06-25-20 04:35 PM

Here is the 3M spec sheet for the 3M90 spray product (a different product than the headliner adhesive you purchased, I don't think this exists for their headliner product publicly):https://multimedia.3m.com/mws/media/...low-voc-25.pdf

The sheet indicates 200F, but some suppliers selling it seem to indicate up to 250F. I used this in some interior spots on my car and so far it has held up for the last year, but I also have some good heat/uv blocking tint on all my windows which might be helping out for when its parked outside for short stints. They may have another product with a higher rating.

Best thing to do is probably call up grainger or some other supplier and ask them about stuff like this before you buy next time. 3M isn't super transparent about it, but the professional supply places generally have all the specs and know their stuff.

And for the record, I also made this mistake before on a different car and its extremely frustrating.

The only thing I can think of is that the headliner doesn't generally get direct sunlight, so in most climates it might work for that. On the other hand, its against the roof which gets pretty damn hot so idk. Perhaps newer cars have enough insulation behind the headliner that it manages to cling on.

Oppai 06-25-20 05:00 PM


Originally Posted by SpinningDorito (Post 12420486)
Here is the 3M spec sheet for the 3M90 spray product (a different product than the headliner adhesive you purchased, I don't think this exists for their headliner product publicly):https://multimedia.3m.com/mws/media/...low-voc-25.pdf

The sheet indicates 200F, but some suppliers selling it seem to indicate up to 250F. I used this in some interior spots on my car and so far it has held up for the last year, but I also have some good heat/uv blocking tint on all my windows which might be helping out for when its parked outside for short stints. They may have another product with a higher rating.

Best thing to do is probably call up grainger or some other supplier and ask them about stuff like this before you buy next time. 3M isn't super transparent about it, but the professional supply places generally have all the specs and know their stuff.

And for the record, I also made this mistake before on a different car and its extremely frustrating.

The only thing I can think of is that the headliner doesn't generally get direct sunlight, so in most climates it might work for that. On the other hand, its against the roof which gets pretty damn hot so idk. Perhaps newer cars have enough insulation behind the headliner that it manages to cling on.

Thanks for the info, appreciate it. Guess it was a blessing in disguise that I botched the job anyway so I'm not too bummed about the glue releasing.

​If anything it'll make the eventual removal much easier which was most of the reason I didn't want to redo it right away cause at room temp the adhesive was very strong and would've made it a huge headache to remove the foam.


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