Okay, I must admit that I am confused. Seems that everyone I ask has a different answer. If I could just find more than two that agree, I'd go with that option.
I stopped in the auto body shop today, where one of our town's most helpful people work. If I would have caught him, I bet he would have glued them on for free. "Come see me if you ever need a dent fixed" he would have said.
The two guys in the shop said to use a two part epoxy. Go to the auto parts store, they suggested.
The auto parts guys said "Save your money. Just use silicone. It'll hold them, probably".
I'm going to have to purchase something, whether it be double sided tape, epoxy, or silicone. I don't think I have any of those things on hand.
Double sided tape tends to fail after a few years. I've had both the adhesives fail, and the foam fail. It will also hold the glass further out than original, due to the thickness of the tape. You've probably experienced the failure of this stuff with little bullseye mirrors. The ones that fall off in a year or two.
The mirror adhesive you buy in the store is superglue. It's meant for gluing interior mirrors back onto the windshield. It does not stick well at all to the plastics and will make a poor hold on the exterior mirror.
A two part epoxy will likely work, but is brittle, and will not adhere well to the plastic.
A goo, be it silicone, trim adhesive, black gasket material, or even 5200 would be my choice. Glob it rather heavily around the mounts the glass sticks to, and glob a good bit onto the glass. Then press it together and hold it in place (tape). It's flexible, so it tolerates the vibrations better.
3M 'VHB' two sided tape...it is holding the side trim onto the Monte!
When I replaced the rusted front fenders on my '93 Jimmy, I pried the side trim off and had to use a wire wheel to remove the tape & used some to re-mount the trim on the new fenders.
It is thinner than the foam center two sided tape and has incredible holding power. Modern Marvels does a story on it and mentions that the only street signs to survive Hurricane Andrew were those mounted w/ VHB tape...the story shows it being used to glue windows into a skyscraper!
3M double sided emblem adhesive tape or silicon. I've used both with success. Buy a strip of the tape and cut a couple of strips for the back of the glass. Don't panic if you break it, most auto superstores sell just the glass for those mirrors. My NAPA store sell the emblem tape by the foot in different widths.
"Education is the ability to listen to almost anything without losing your temper or your self confidence"
I see i perhaps misunderstood, gluing the actual glass mirror back into the frame? there is a special silicone I've used to fasten mirrors but these were in the house, I,d call a glass co. that puts in windshields etc. they are the ones that do this type work, I used to use them at the Shop, to replace any glass in any equipment, from cars to P&H Cranes, Draglines, giant Haulage tucks etc. including mirrors. the special mirror silicone i used was pretty high priced $22 a tube 10 years ago, and I think what i had was for special Sheetrock attachment, but i'm pretty sure you could get what you need cheap, just run by the office and pick it up as a DIY. at any glass repair co., best wishes, ray
I replaced the interior mirror, and the stuff they gave me with the fix it kit smelled precisely like the kitchen and bath silicone caulk I use. When it failed I reglued using the HD silicone. It worked for the interior mirror. Used in bathrooms that stuff must resist all kindsa chemicals, as well as hot water. The caulk I used for the rearview has resisted the cold and the heat thus far.
It is also used for fish tank repair, and we used it for our home-built counter top water filter.
I suspect it would serve as a damper aginst car vibrations as well . . . .
Out of desperation, I bought some silicone adhesive, and glued the mirrors back on. The good thing was that it only cost $4.59.
My goal, when fixing anything, is to try to figure out the best way to do something, and use the best material possible, so it will last the longest...and try to save money while doing it. I think the glue was the best way to go.