In modern high-rise buildings, especially those using unitized curtain wall systems, perimeter fire safing plays a critical role in life safety and façade performance. Yet, many people misunderstand its true purpose. Most assume perimeter fire safing simply “stops fire.” In reality, its primary function is much deeper: To slow the vertical movement of smoke and hot gases between floors through the slab edge joint. In façade engineering, understanding this concept is essential

Modern high-rise buildings rely heavily on curtain wall systems not only for architectural appearance but also for long-term structural and environmental performance. In today’s façade engineering industry, Performance Mock-Up (PMU) Testing has become one of the most important quality assurance processes before mass production and installation begin. For landmark commercial towers, airports, and unitized façade systems, a small design or installation issue can later lead to m

Why a 1.0 W/m²K Glass Specification Still Leads to an Energy-Inefficient Building Modern façade design is increasingly driven by sustainability targets, energy codes, and high-performance glazing specifications. Today, developers, consultants, and architects often demand glass with extremely low U-values such as 1.0 W/m²K or even lower, assuming that this automatically guarantees an energy-efficient building. But in reality, many completed buildings still perform far below ex