As the curtain wall is non-structural it can be made of a lightweight material reducing construction costs.

When glass is as curtain wall , a great advantage is the natural light can penetrate deeper within the building. The curtain wall facade doesn't carry any dead load weight from the building other than its own dead load weight. The wall transfers horizontal winds loads that are incident upon it to the main building structure through connections at floors or columns of the building. A curtain wall is designed to resist air and water infiltration, sway included by wind and seismic forces acting on the building, and Its own dead load weight forces.