So the metal black piece that holds the mirror becomes 160+ degrees if it’s hot + sun out. My best bet so far is try to park opposite side of the sun, but isn’t always possible depending the parking lot.
but seems the glue is failing when it gets burning hot. It did hold for 8+ months, but trying to avoid worrying/needing to repair it for a 3rd time.
Edit: the rear view mirror black piece is for 2010 Honda civic.
3M Rear View Mirror Adhesive
Probably going to get flagged for this post. Putting ( How to reattach mirror to windshield ) in Google would show products, instructions and videos on how to solve this problem. In just a matter of seconds plus any auto glass shop can solve this problem.
This adhesive looks like a good alternative. The two mounting surfaces need to be properly cleaned to promote permanent bonding too. There must be no adhesive from previous bonds on the surfaces. Use an abrasive to remove anything on the surface, then wipe down with a solvent. I’d wipe with acetone and finish with an isopropyl alcohol wipe. One that acetone might be a solvent for your dashboard material. Over the dashboard to prevent getting any acetone on it. After the alcohol wipe dries, follow the 3M instructions for bonding the mirror.
Cracking (lowering) your windows just a tiny bit will help lower the in cabin temps, and help to keep your mirror from falling off…
Good advise above, use a razor blade 1st to remove the old adhesive off the windshield and mirror mount bracket (button), scrape both surfaces clean, then follow JT’s and the adhesives instructions…
Yep, fanatical preparation is the key. A quality adhesive should handle the heat.
This 3m Glue stuff is the problem, Once it gets 300 degrees + 10 pound mirror on it. It fails once the metal piece burns your finger tips once touched.
It was cured properply, All old glue removed, The only problem im having is the black piece becomes 200-300 degrees while sitting in the sun and seems like after 8-10 months it completely fails even tho it cures properly, Right adhesive mirror glue, all that.
I just have no idea how to regulated the tempature on a black metal piece that gets hit by the sun.
Cracking windows might be an actual useful fix for future glue fails. to regulate the tempature of the piece.
Was hoping there was maybe a white replacement piece for this to not soak the sun while parked outside work for 11-12 hours a day. Since the sun there basically goes above the building so you cant really exactly hide from it.
My Dad drilled and threaded the metal piece and drilled a hole Through the windshield and installed a screw. Like Club Med, it’s your last resort.
Since you have had repeated issues with this, perhaps you should visit a windshield shop and have them install it and ask if there is a warranty.
Or, just to ensure there is no residue affecting the adhesion on either side, buy a new mirror button and install it an inch over from the original location.
I wouldn’t say there’s anything affecting the install. It’s just the completely upgraded sound system in the doors, 2500W dual kickers subs can well… Potentially, vibrate all the glass in the car and THAT could affect the bond lol. The repeated issue would be on like 105 degree days being directly in the sunlight for 12 hours and becoming the temperature to be able to cook a steak. Because the color and it being metal.
That being said I think testers high temp epoxy is probably what I need. Both 3m and the regular permatex works for 6-18 months, then one hot day directly in the sunlight for hours itll fail. But I got a feeling his recommendation could be a more permanent fix.
Appreciate everyone
I have never seen a 10 lb mirrir on a honda.
Buy a new mount, most are a natural steel color (silver). Or place a piece of duct tape on the outside of the windshield, probable won’t help.
Wear latex gloves while cleaning and glueing the mirror mount to the windshield; body oil will prevent good adhesion.
The inside mirror has come off twice during summer months while under a car cover. I think the adhesive supply at the shop is 10 years old, few techs reglue mirror mounts.
Living in Florida I had that problem. My lasting solution was to buy two of the 3M kits. The mirror mount did not fail after using two kits.
I think we may have found a big issue, yes extremely high vibrations can/will work things loose in a vehicle, and really make a mirror vibrate which can/will affect the adhesion of the glue…
Don’t think anything said so far alone will help with your perfect storm of extreme heat, high vibrations and windows being tightly closed without modifying your behavior some…
Here is what you could try, as mentioned, if you can find a silver button try it (might have to try aftermarket, or other year/model Hondas)…
Tint the windows including the top of the windshield depending on your states law, some will let you go 5% above the manufacturer’s AS-1 line… I’ve heard good things using Ceramic tint also…
Next, on the hotter days, remove the mirror from the button while you are at work, so the weight is not hanging from the windshield until you cool the in cabin temp down some…
Maybe turn the at least the bass down also until the in cabin temp is lowered…
Tinted windows that are cracked some, even lower if using rain deflectors, will lower the in cabin temps quite a bit…
I think at least a combination of the above will work IMHO…
This may fall under the “if ya wanna play, you gotta pay” using your upgraded sound system…
Brow tint is a phenomenal recommendation, as with the cracking windows and using high temp epoxy vs regular standard.
I think all 3 of these would be sufficient enough to survive next summer. TYVM for an easy solution, You’re a legend with knowing my aftermarket pay to play fixes, You helped me a lot throughout the years! kudos man<3 @davesmopar
I suggested a couple of things because it seems like there must be. Unless your friends and neighbors all have to refit their rear view mirrors twice a year the issue must be unique to your car or installation method. Perhaps the sound system is the issue. In my many years in the auto repair field I have found it difficult to remove all the previous glue residue from the mirror button and have often just replaced it to solve a recurring issue.
