I have been fortunate to be part of the architectural glass and metal industry for over 25 years. From sweeping the floor of a glass shop at 16 years old to my current role with the IUPAT, I have seen the industry evolve. I have seen the need for improved safety, quality, and energy-efficiency standards. As an advocate for the glass and glazing industry with the IUPAT, I interact with every aspect of the industry, from installers to design professionals, and can assure you that the need for quality assurances has never been greater.
Cities and states have implemented measures to hit energy reduction goals. New York City, Washington, DC, Boston, St. Louis, Seattle, Denver, Maryland, Washington State, Colorado, and more have set ambitious building and energy performance targets. Few trades sit more squarely at the center of those goals than the contract glaziers who install the windows, doors, curtain wall, storefront, and advanced façade systems that define both new construction and retrofit work. Yet glazing remains an unlicensed trade in most States, even as building systems become more complex and the risks of improper installation continue to rise.
Energy performance standards are the most significant evolution I have witnessed in my time in the industry (next to safety, which has also seen considerable improvement). Building energy performance relies on proper envelope installation. Even the most advanced window or curtain wall system will fail to meet its rated performance if it is not installed correctly. Owners, public and private, are already paying more for high-performance building systems. If installers lack the training to install these systems properly, that spending is wasted, and the States and Cities risk falling short of their climate commitments. Modern glazing requires knowledge of thermal bridging, advanced thermal breaks, oversized unitized modules, and integrated technologies such as photovoltaic glass. Passive House is becoming increasingly common, with multiple projects in most major U.S. Cities. Licensure ensures that installers understand these requirements and can deliver the performance required by these legislated standards and Passive House.
Skilled glaziers are essential to quality outcomes. When glazing is installed correctly, the façade performs as designed, buildings stay dry, air leakage is controlled, and expensive callbacks are avoided. When it is installed poorly, rework becomes inevitable, projects are delayed, and costs multiply. Certifications such as AGMT and NACC have become more common because owners and general contractors understand the value of proven skill, but certification alone is voluntary and can be removed from project specifications at any time. A license cannot. Licensure prevents a race to the bottom and ensures contractors and owners cannot bypass minimum standards that protect quality, safety, and building performance.
Safety concerns provide an equally compelling reason to license the glazing trade. At the U.S. Nuclear Regulatory Commission headquarters in Maryland, a GSA project, a 3-by-15-foot glass panel blew off the building, narrowly missing pedestrians. Only after the contractor was replaced with one employing AGMT-certified journeyworkers did the problems stop. This incident highlights the difference between someone who simply installs glass and a trained glazier who understands the handling, weight, anchorage, and performance characteristics of today’s large-format, unitized, electrochromic, photovoltaic, and triple-glazed systems. As façade components grow heavier and more complex, the margin for error continues to shrink. Licensure is a way to ensure every installer on a project has the proficiency needed to perform this work safely.
Licensing also strengthens a local workforce. It provides workers with a professional milestone that improves retention and establishes glazing as a viable long-term career pathway. A license signals that a worker has reached a verified level of proficiency and creates an incentive for glaziers to remain in the region where their licensure has value. It also combats widespread misclassification, an increasingly common practice in construction, especially in markets where low-road contractors rely on 1099 labor regardless of the actual working relationship. Misclassification can lead to lower quality work, high turnover, and exploitation, often impacting undocumented workers who face wage theft, unpaid overtime, broker fees, and threats of deportation if they speak out. Many contractors do not choose this model willingly; they feel forced into it to remain competitive. They also inherit significant joint-employer liability under these arrangements. Licensure disrupts this cycle by requiring properly trained personnel and supporting fair, above-board competition across the industry.
States and Cities already license numerous construction trades because their work affects public safety, structural integrity, and building performance. Glazing clearly belongs in this group. The systems glaziers install today are central to weather protection, energy efficiency, and occupant safety. Given the complexity of modern façade assemblies and the cost of avoidable failures, glazing warrants the same level of oversight and accountability as every other licensed trade.
For all these reasons, licensure is more critical than ever for our industry. Perhaps it wasn’t always needed, but it is now.
Travis Nevins is deputy director of organizing for IUPAT.
