A curtain wall is a non-structural outer covering of a building. Since it is non-structural, it can be made of lightweight materials, helping thereby to reduce construction costs.
The curtain wall method of glazing enables glass to be used safely in large, uninterrupted areas of a building, creating consistent, attractive facades. The variety of glass products available today allows architects and designers to control every aspect of aesthetics and performance, including thermal and solar control, sound and security, as well as colour, light and glare.