What's the best way to glue glass tiles on a bathroom mirror?

You can try using silicon caulk, you will have to use a razer blade to get it off but it will come off clean and it will not take the paint off.

I'm excited to see how it comes out!! Great idea!

I've done this on many surfaces and I use Loctite Power Grab. Comes in Clear or white, indoors or outdoors. Easy to do.

I've seen people make frames (i.e. Big picture frames) to cover this situation and attach with Velcro.

I might do that mirror in a Mercury glass treatment. It would look so vintage.

There are many websites that show how to do Faux Mercury glass and it's not too difficult.

Locktite makes a mirror and tile adhesive. I used it to clue the moulding around my builder grade mirror and it worked beautifully. Found mine in the caulking section at HD.

Clear silicone caulk works great for this. It's very easy to work with and easy to remove. I've done this on mirrors several times.

This is awesome, thank you everyone! Plan to do it this week and I will report back :)

Glad you liked the idea and you could make matching accessories using that idea too. Have fun.

Only thing I can add is don't use hot glue. I tried it and the glass beads kept falling off. I'm going to try clear silicon now. Ta

I used E6000 on my bathroom mirror to cover those black spots. Used a blue flat backed glass pebble. it was permanent.

Something that came to my mind was when I decorated a window (same can be done with a mirror) with that fake stained glass paint. If you are very, very careful, it looks really pretty. A second choice, depending on the size of the mirror of course, would be to add a frame around it!

Have you searched Hometalk's website? Here's one I found under Projects when I typed in "glue tiles to mirror". http://www.hometalk.com/diy/bathroom/mirrors/bathroom-mirror-update-15892618

Hot glue works... at Christmas I glue stars on a mirror above the fireplace to be a part of the nativity. They come off without much effort.

Absolutely go with the clear silicone to adhere any trim (mirrors, glass or wood trim). Also apply a bead along the inside edges between the trim and the base mirror, to prevent moisture getting in behind (mould alert!!!) Easy to remove if you have to, make it even easier to warm the silicone with your blow dryer!

I'd suggest covering the mirror area with clear, frosted* Contact paper, then glue the pebbles to that. I use Weldbond, - because it is water-proof when dry, and you specified this was a bathroom application ... But I use Weldbond for EVERYTHING. It is an amazing product, and dries clear, and does not yellow. When you move, you should be able to lift the Contact paper off. *The frosted texture will allow the glue to grab.

Have you thought about taking the mirror down turning it over and applying some mirror spray paint to fix the spot where the mirror finish wore off on the back first?

I think that you get the glass tiles cut them in equal widths and use velcro to hold them in place. I would be more worried about stain, could it be black mold? I could be water damage to mirror as well,though.

I would put wooden trim around it. Like a picture frame. wainscoting trim is cheaper than picture framing but there is a ton of trim to look at. Tack it up, paint it, remove when you move and no damage. You could just ask the landlord if you could do something permanent. You could paint a latex fake border, when you are done wash it off.

No I haven't, But I do know some people who have done it and it works pretty good.

some people I know have and it looked fine after. all old mirrors will have the date on the back of the glass part.

You can buy framing kits for framing bathroom mirrors. I found some on ebay, but I have decided to go with fake stained glass contact paper in a geometric pattern with colors that match my accessories (shades of aqua and brown). Saw one on Hometalk recently where they grouted in broken pieces of glass squared up with the outside edge of the frame but freeformed around the inside edge. It was gorgeous, but I'm not that talented.

I have used Loctite PL 530 to attach tiles to a mirror. https://amzn.to/3mII4f3