Bathroom Mirror Cloudy

[ukkid35]

Mirror that faces a shower has developed a white limescale like coating. It seems impervious to every cleaning agent I've tried, including domestic and commercial limescale removers. The only thing that has helped a little is an abrasive glass polish applied with an electric drill, but it was slow hard work.

Mirror is about 6ft x 4ft and set in to the wall, and I'm a tenant, so I'm not about to try to replace it. If I were to use the power tool polishing method it would probably take ten hours to finish, doing by hand would probably take several weeks, not that I'm going to test that estimate. I really need a chemical cleaning agent, surely there must be something.

Any suggestions gratefully received (changing the mirror excepted as it's too large and impractical as a DIY job for me).

TIA

[herewego]

I don't have a solution but just wondering if the tiles are the same or if it's something about the glass.

[rich83]

try viakal

[Simpo Two]

Will a razor blade shift it?

[Rosscow]

Just use your polishing machine to clear an area as large as your face

[ukkid35]

herewego said:

I don't have a solution but just wondering if the tiles are the same or if it's something about the glass.

It is difficult to be sure, but the tiles don't appear to have been affected in the same way.

[ukkid35]

rich83 said:

try viakal

I have tried Viakal, LimeLite, Hagesan Blue Pro, even Hobrite Ceramic Hob cleaner. None have any affect at all.

They only time the effect is subdued is when the mirror is slightly damp, which shows this is definitely on the front of the mirror, not the silvered side. You can even see the reflection of the surface deposits and feel it with your finger nail.

[ukkid35]

Rosscow said:

Just use your polishing machine to clear an area as large as your face

Even that would take a very long time, and risk overheating and cracking the glass if I got too zealous. The polishing compound is cerium oxide paste applied with a buffing wheel, it is powerful enough to remove light scratches from windscreens.