side mirror broken, what now?

We had this happen in Canada last year on the way north. The regular automotive glass shops were no help at all. They couldn't cut glass and wouldn't do anything unless they had special automotive glass. We stopped at the local Kenworth dealer to see what they had. They sent us up the hill to a glass shop who cut a new mirror from household mirror and glued it in. And they'd only take $10 for it. Household mirror glass won't hold up outside. The backing for the reflection isn't meant to take strong sun UV rays all of the time, but it was fine to finish the trip. I ordered a new mirror head this winter to install when I can get the MH out of the snow.

Bill

Suggest contact any large RV dealer they may have a replacement or able to overnight from their supply house. Most mirrors have a "knob" on the reverse side of the mirror that fits in mechanism that
moves the mirror. Glass shop may be able to make one.

Find a good glass shop and ask them if they'll cut a replacement mirror piece for you. They should also be able to advise you on the best adhesive to use, or may also do the installation at a nominal cost. I've had glass shops cut replacements for classic car mirrors a number of times over the years.

A temporary fix would be find a suitable truck mirror head in an auto parts store, and affix it the existing frame with duct tape or whatever other temporary means you have at hand.