What am I doing wrong - rearview mirror "button" won't stick to windshield! - JeepForum.com
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post #1 of 29 Old 06-12-2019, 07:33 PM Thread Starter
sevensandeights
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What am I doing wrong - rearview mirror "button" won't stick to windshield!

I can't seem to figure out how to make the little metal button that the rear view mirror mounts to stick to the windshield!

I've used two of the Permatex kits that you can buy at the auto parts store. One I already had laying around and it likely could have been several years old. After it failed, I bought another kit.

For my first attempt, I sanded off all previous residue from the button with 320 grit sandpaper and then thoroughly wiped the button off. I used the accelerator wipe on the windshield and the button per the instructions. I admittedly used more than one dab of glue and there was definitely too much as it dripped down from the bottom of the button. However I let it dry for over 24 hours and but the button fell off immediately when I attached the mirror.

2nd attempt was similar. Sanded the residue from the button and cleaned it with isopropyl alcohol. Scraped the residue off the windshield with a razor blade and wiped with isopropyl. Used the accelator wipes and one drop of glue. Button seemed to stick much better and the glue dried with no dripping. Waited 5 hours to attach the mirror and it immediately fell off!

Am I doing something wrong? Is there a better product out there?

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post #2 of 29 Old 06-12-2019, 07:58 PM
Matt1981CJ7
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Gorilla super glue has kept mine in place for several years.

320 is pretty course for this application. I'd go much finer, and be sure to lap the piece on a completely flat surface, like a sheet of glass.

Matt
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post #3 of 29 Old 06-13-2019, 02:41 AM
80cj
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I've had problems with my mirror falling off too. The last attempt, I bought a new button from Napa along with the adhesive. So far so good. 3 months.
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post #4 of 29 Old 06-13-2019, 06:55 AM Thread Starter
sevensandeights
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Quote:
Originally Posted by Matt1981CJ7 View Post
320 is pretty course for this application. I'd go much finer, and be sure to lap the piece on a completely flat surface, like a sheet of glass.

Matt
Too coarse to remove the residue or too coarse for surface prep prior to glueing?
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post #5 of 29 Old 06-13-2019, 07:28 AM
jsal
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The NAPA I use sells new buttons, in a kit with the glue, that worked for me.
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post #6 of 29 Old 06-13-2019, 07:40 AM
Matt1981CJ7
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Quote:
Originally Posted by sevensandeights View Post
Too coarse to remove the residue or too coarse for surface prep prior to glueing?
Surface prep.

Matt


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post #7 of 29 Old 06-13-2019, 08:14 AM
DougE
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Autozone has a plastic button using silicon caulk that seems to work better than the metal button and superglue.

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post #8 of 29 Old 06-13-2019, 08:37 AM
jp360cj
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After 2 different kits fell off, I went to a glass shop and they installed it for free for me. He used some sort of Permatex aerosol spray. That was at least 5 or 6 years ago and it's still holding.

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post #9 of 29 Old 06-13-2019, 07:16 PM Thread Starter
sevensandeights
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I hate to admit it but I'm kind of glad other people have had trouble also!

Got some Gorilla glue today and the button is currently glued/clamped in place - we'll see what happens tomorrow.
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post #10 of 29 Old 06-14-2019, 04:09 AM
keith460
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Prep work is everything. Use Acetone to remove any dirt or traces of old glue residues.

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post #11 of 29 Old 06-14-2019, 08:52 AM
hp_lovecraft
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When I glued mine on 12 years ago, a 1" crack appeared on the windshield a couple days later. I don't know if there was a tiny crack I didn't notice or something else but that want going to work.

Instead I bolt the mirror to the top of the windshield frame, right where the footman loop goes. Early/intermediate CJs use that spot, so its not that weird. Though with the top on, I can't really see anything out the back because of the angle.
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post #12 of 29 Old 06-14-2019, 02:54 PM
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I guess Iíve had good luck? I put a piece of tape on the outside of the windshield to mark the spot, use a razor blade to scrape the old glue off the button and the windshield. Then follow the directions on the package. If it says to apply the prep and wait a minute for it to dry that is what I do. It stays put for years.
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post #13 of 29 Old 06-14-2019, 05:45 PM
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Mark the spot on the outside, and clean the inside with alcohol or carb cleaner, scratch an X in the qlass, and use JB Weld. Hold in place till dry with duct tape. It'll never come loose.
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post #14 of 29 Old 06-16-2019, 02:25 PM Thread Starter
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So far so good with clear Gorilla glue!
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post #15 of 29 Old 06-16-2019, 09:41 PM
Cutlass327
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I'd be leery of scratching the glass - you are basically etching it like how it is done to cut glass..



I have read you want that button to be smooth as possible. Also, you kept mentioning cleaning the button but nothing about cleaning the glass. Denatured alcohol to clean the glass, button after all old glue is removed. never had an issue, and I always use the Permatex glue kit. had issues with an off brand before.

Rick

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