In our bathroom, we have a wall-mounted mirror (un-removable) wherein the bathroom spout and handles are mounted behind the mirror. I need to replace the valves in the faucets as they have been leaking for sometime.

I can't get a 31/32 sink wrench around the existing valve because the (genius) who mounted the mirror didn't cut the holes in the mirror wide enough to do so. Can almost get the wrench in, but I'm confident anymore forcing or torque will crack the mirror.

I need to widen the existing holes (1/4-1/2") in the glass around the handles to get the wrench in there.

The picture below shows all this, though it also shows part of the handle stem protruding which I can remove to do the job.

I'm thinking a dremel with a diamond bit, allowing the mirror to cool regularly with breaks (can't use water because it'll get inside the wall), wearing lots of protection including mask for a possible mirror shatter.

The whole thing may just need to be replaced if this won't work or when I break it. Any advise?

enter image description here

  • You could use water if you used a shop vac to suck away the excess. "un-removable" because it is glued?
    – Alaska Man
    Sep 6, 2020 at 22:04
  • I think the water would inevitably get back in there, even with a shop vac. Yes, "unremovable" because it is glued to the wall.
    – David H.
    Sep 6, 2020 at 22:09
  • "I need to replace the valves in the faucets as they have been leaking for sometime." The shop vac will get most of it, A little more water is probably not a big deal. Can you open the wall on the opposite side to access the plumbing and to assess any water damage?
    – Alaska Man
    Sep 6, 2020 at 22:32
  • I understand the confusion here now, Alaska Man. The faucet is currently leaking into the sink as a result of the of bad valves. So currently there's no water penetration into the wall itself. I can't access the other side, unfortunately.
    – David H.
    Sep 7, 2020 at 1:47


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