Can you tile over mirror?

I would paint over it.

i think i would sand the mirror so it isn't so smooth and take it from there. the tile needs a rough surface to adhere to. good luck.

I used hair dryer and plastic trowel to loosen glue behind mirrors from closet doors in our mobile home. Found out there were only four glue pads per square. Your case maybe different. Don't rush, use safety googles, gloves. Good luck.

Generally, I would try to remove existing layers before adding new ones, but removing mirror could be difficult if it's going to shatter and leave a bunch of glass bits everywhere. If there's a spot where you can remove a piece inconspicuously, try that first to see how hard it will be. See also this tutorial for help with removing tiles from a backsplash (I'm assuming the mirrored pieces are in tile-like shapes): https://toolboxdivas.com/2015/05/tile-removal-101-remove-tile-backsplash.html

I found this video that might help you decide if you want to try and remove that mirror or not - https://www.youtube.com/watch?v=6i7zoNHElTI

Hi. You can tile over mirror. Use construction glue instead of mastic. Use painter's tape to hold it in place until the glue dries. Put in your first row and allow glue to dry before continuing. It will be a slower process, but worth it. The mirror actually makes a nice solid base to work on. Then you can grout as normal. Happy DIY'ing!

In short, no, not a good idea in any way, shape or form.

Before tackling this project, did you know you can buy glass etching chemicals and you can make any kind of stencil for any kind of pattern you want?

You can also put an epoxy paint(s) on the mirror.

Taking the mirror off means extensive drywall repair, after the safety concerns of pulling glass off the wall (wear a face shield & leather gloves). Then you have to prep the wall for tile, which means waterproofing.

Sunce it’s already waterproofed with mirror, I’d look into adhesives that will bond to glass. They may be stinky and you’ll have to start laying tile from the bottom and go up. You’ll need a ledger at the bottom or tape in place the bottom course and let it dry before going forward. Otherwise it will slide off with gravity.

Then when you grout, use a lot of polymer additive, maybe even 100%.

If you’re not using grout lines and big tile, that will require more accurate cuts.