What characterizes a structural silicone glazing (SSG) system?

A structural silicone glazing (SSG) system is primarily characterized by its use of silicone sealant as the main method for attaching the glass to the framing. This technique allows the glass panels to effectively transfer loads and provides both aesthetic and structural benefits. The silicone sealant not only holds the glass in place but also contributes to the system's weatherproofing properties, which is crucial for maintaining the integrity of the structure over time.

The silicone's flexibility and strong adhesive properties allow it to accommodate temperature changes and movements within the building, ensuring lasting performance. The use of this sealant is a defining feature of SSG systems, distinguishing them from conventional glazing methods that may rely more heavily on mechanical means or standard sealants. Thus, this option correctly captures the essence of what defines a structural silicone glazing system.