One architectural glass usage that is growing tremendously is glass floors. Not every glass floor gets as much attention as the one recently opened at the Grand Canyon. In a range of applications, however, from retail establishments to walkways and bridges, being able to see through the floor has become very desirable.

Architects’ Guide to Glass & Metal spoke to Valerie Block, senior marketing specialist with DuPont Building Innovations in Wilmington, Del., about glass floors to get her insights and information about this growing use of glass.

AGG: What is the trend in glass floors today?

Block: Glass floors, stair treads, and walkways are being incorporated into a growing number of residential and commercial projects. In some cases, glass floor panels bring additional light into a space. In other cases, glass floors and stair treads act as the centerpiece or focal point for visitors, shoppers, or occupants of a building. Such is the case with the elegant, floating glass staircases at the Apple Computer Stores in New York, Chicago, Los Angeles, and San Francisco. 

AGG: What do architects need to know about glass floors?

Block: Architects need to know that glass floors are different than other glass applications and require special engineering and attention to safety issues. Based on load calculations and intended use, the proper thickness and glass type, thickness and type of laminated glass interlayer, and top surface non-slip treatment must be determined. Installation details are critical. 

AGG: How is the market changing?

Block: The market is expanding as the interest in glass floors is expanding. New products, systems, and technologies are being offered. For example, DuPont now offers a structural interlayer that is 100 times stiffer than the traditional PVB interlayer. This interlayer offers improved strength and post-glass breakage performance—important considerations for flooring projects. 

AGG: What should architects look for in the coming year in terms of glass floors?

Block: Architects are likely to see more products, both structural and decorative, being used in glass floors. As a natural complement, balustrades and walls supporting and surrounding these products are likely to be made with glass too. Exterior applications with glass, such as the amazing glass walkway on the West Rim of the Grand Canyon, will stimulate and expand the use of glass under foot in a variety of exterior locations. 

Architects' Guide to Glass & Metal
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