Sticking a light mirror to tiles

ferry

Hi all 

I have a mirror, quite light in weight 12" X 48" that I would like to stick to the ceramic tiles in my bathroom.
Looking around the net it seems people have had mixed results with doing this with standard clear silicone. There is a mirror grade silicone I could get but its not available locally 
Any adverse reason why a standard silicone wont be a permanent solution?
Thanks as always
Fx 

DiddyDavies

ferry said:

Any adverse reason why a standard silicone wont be a permanent solution?

Most general purpose silicone sealants give of acetic acid when they are curing (hence the reason for the vinegar like smell from them) and this can be corrosive to some materials.
As the back of the mirror is made by applying a very thin coat of a silvery material, it is possible that the acetic acid from the silicone could start to corrode this backing material.
For this reason it's probably best to use a neutral cure silicone as this doesn't release any acidic fumes. Something like this:
Dow Corning 785N Neutral Sealant 310ml White (toolstation.com)
although there are plenty of different makes available.
I'm sure that the mirror grade silicone you refer to will be very similar to the product I've shown.

grumbler

First, it's worth protecting the back side of a mirror in a bathroom from corrosion. IMO, with something like decorative PVC film.

Then, for fixing to a wall,  I'd use patches of double-sided foam  sticky tape and use neutral silicone only for sealing  the gap around.