Today, curtain walls fill an essential safety role: firestops. Since glass curtain walls aren't flammable, they can stop a fire from climbing multiple floors. The slower the fire moves, the more time people have to evacuate.
Firestops can also limit the physical damage done to the building, thereby saving money on cleaning and restoration.
Curtain walls made of glass let in natural light, which can feel welcoming to customers and staff alike. Studies show that abundant natural light can boost productivity, making it a great way to get more from your employees.
Even though they no longer serve as key architectural supports, curtain walls still protect the building's interior from wind and rain.