How long do glass railings last?

With proper upkeep, glass railing systems can realistically last anywhere from 20 to 30 years. The glass panels themselves tend to hold up for the entire lifespan of the system, which is honestly impressive. The parts that'll need more attention are the sealing systems — expect to replace those every 5 to 10 years — and the hardware, which typically needs some refurbishment every 10 to 20 years depending on the conditions it's exposed to.