Is 12 mm tempered glass good for railings?

Absolutely yes.

12mm tempered glass is one of the most widely used and reliable options for residential glass balustrades, balconies, decks, and stair railings. It is heat - treated to be several times stronger than regular glass. It is hard to break, and when it does break, it shatters into small, blunt pieces for better safety.

This thickness provides solid stiffness, reduces shaking, and can handle daily impacts, wind, and outdoor weather conditions perfectly. It fully meets the general residential building code requirements for exterior railing systems.

For standard home use, 12mm tempered glass is durable, cost - effective,and easy to install using spigots, clamps, or channel systems.

If you need higher safety for pool fences, high - rise buildings, or coastal areas, 12mm laminated tempered glass is a better upgrade.