Rear view mirror glue

[hatzie]

Prep makes a big difference.

I buy the button with the 3M tape and remove the tape so I have a nice clean new button to work with.
I buy the Permatex glue with the primer towelette.

• Don't try to glue it at lower than 75°F outdoor temps. I usually glue these at 9-10 AM so the glue is doing the early curing during the hot part of the day.
• Clean the glass and the new button with acetone then 91% isopropyl alcohol.
• Generously mask the mount area with some blue tape. Trace the mounting button with a pen and cut a windshield mounting button shape hole. Then remove the button shaped tape leaving the rest masked.
• Sand the mount area with 220 grit aluminum oxide sandpaper til it's obviously scratched and even a little cloudy.
• Sand the button.
• Remove the tape and clean the windshield & button again with Acetone & 91% IPA.
• Wipe the primer on the dry button and the entire sanded mounting area on the glass.
• Apply glue to the button.
• Press it in place on the prepped area and hold it for whatever time the package says to. I think it was a minute or two.
• Rip a long strip of painters tape and stick it on the not to be glued side of the button and the windshield to hold the button tight against the glass.
• Leave it taped down for at least 24 hours in the sun. I usually wait 48 hours or a little longer before mounting a mirror.