I've used the Angel Gilding spray silver products for several years now.Have silvered a number of mirrors 22" to 33". Find the coating is good for about 12 months. Couple of pics of mirrors. One of fresh coating and the other of a mirror coating 2 years old. Smaller mirrors up to 18" I can get Aluminized at a reasonable price.
Stephen.
Oops!
picture of mirror with two year old coating was too big
to upload.
Reduced size and now fits.
Stephen.