Generally speaking the best quality mirror can be found in 6mm silver, however, size, weight and price will all play a factor in your decision. ('Silver' is the industry term for mirror simply referring to the silver backing) As a general rule mirrors over 1 square meter (sqm) should be in 6mm silver, mirrors under this size may be made from 4mm silver. For a variety of reasons you may want to break this rule: Ie;

* 4mm silver is cheaper than 6mm.

* A 30mm bevel (see above) requires 6mm silver.

* A tall, thin mirror - 1600 x 400 while under 1sqm would tend to bow with 4mm silver giving a distorted reflection.

* 1sqm on 4mm is 10kg while on 6mm it weighs 15kg.

Feel free to give us a call and we'll be happy to advise the best glass for your purpose.