Bottom Line: Major float glass manufacturers including are moving forward with North American capacity and product expansions, citing steady regional demand even as geopolitical instability and trade uncertainty persist. Executives point to high interest rates, labor shortages, inflation and tariff unpredictability as the main brakes on faster growth, with NSG describing pent-up demand from developers waiting on the economy. Fenestration Canada's Adrian Edge argues the bigger long-term risk isn't the Middle East conflict but the erosion of confidence in an integrated North American market following the U.S. decision not to renew USMCA in its current form — which could open the door to greater Chinese and Asian involvement in Canada.
Leading U.S. float glass manufacturers operating in the North American market are considering accelerating their expansion in the domestic market against a backdrop of the Middle East war and continuing trade tensions with Canada.
Despite the continuing geopolitical uncertainty, the demand for float glass products in the United States and other North American countries remains generally strong, according to major float companies. That steady demand has incentivized major float companies to further increase their output and expand their product selection.
Float companies invest in growth despite political and economic uncertainties
Guardian Glass, for example, plans to significantly strengthen its positions in the North American market this year and in subsequent years.
Vince Westerhof, vice president of sales for Guardian Glass North America, says that this year the company is expanding its portfolio with new double- and triple-silver low-emissivity coated glass products that, according to him, help customers meet growing demand for energy-efficient building envelopes. In addition, the company is also introducing new bird-friendly glazing solutions and a temporary protective coating that helps protect coated glass during transport and processing.
The company hopes for further growth in the domestic market. However a number of problems may complicate implementation of the existing plans.
“Despite ongoing challenges, there continue to be meaningful opportunities in the North American glass market, and Guardian Glass is well positioned to navigate current uncertainties through our portfolio of energy-efficient coatings, bird-friendly solutions and diversified offerings,” Westerhof says. “However, several factors are limiting more active market development. High interest rates continue to discourage new construction and expansion, while broader economic uncertainty is weighing on business and consumer confidence.”
According to Westerhof, labor shortages and rising wages remain persistent challenges, making it difficult to find the skilled workers needed to support growth. Moreover, trade and tariff uncertainty, combined with ongoing geopolitical disruptions, is complicating supply chains and increasing costs, he says.
“Inflation and elevated operating expenses are also putting pressure on margins and slowing construction investment. Higher commercial property and financing costs, along with elevated office vacancy rates in some markets, are dampening new development. Finally, global competition continues to intensify as U.S. manufacturers compete with regions that benefit from lower labor costs and stronger government support,” Westerhof adds.
NSG Group is also looking for additional opportunities for the expansion in the North American market this year. Todd Huffman, NSG’s head of architectural glass and solar explains that in recent years the company has made serious investments in the expansion of its local capacities, and plans further development this year.
“Since 2020 we have invested in new capacity with our new plant in Luckey, Ohio, that allows us to better fill the needs of our customers,” says Huffman. “We also converted one of our Rossford [Ohio] lines from commodities to low-iron products due to demand. Also in that time period, we repaired Laurinburg, [North Carolina] to extend the life of the line, allowing production to run smoothly with less down time.”
He says the company has noticed clear signs that there is pent-up float glass demand in the U.S. market and in North American in general. “Developers are holding off on starting projects while they see where the economy goes,” Huffman says. “NSG Group is ready and eager to be the go-to glass supplier when developers give the green light for even more production.”
The company does not believe the Middle East war has had an obvious impact on the industry right now, but the future is uncertain and long-term it could affect the glass market worldwide, Huffman says. “Globally, it has affected bunker fees on shipping containers and has made it more difficult to export. Since more than 20% of shipping goes through the Strait of Hormuz, the shorter the period of unrest in the Middle East is, the less effect it will have, and the better it will be not only for us, but our customers and companies across the globe.”
At the same time, according to Jason Weiss, NSG Group’s commercial and business development director, the company is also promoting several new products that it thinks will help customers win. “We will leverage those areas where we think we offer a compelling value proposition for our customers,” Weiss says. “We are also working to expand our geographic footprint to reach new customers.”
Regarding the Canadian market, Adrian Edge, director of codes and regulatory affairs for Fenestration Canada, believes that the resolution of the Middle East conflict will contribute to the more active growth of the entire North American float glass sector, although the long-term consequences of the conflict are still unclear. “It’s difficult to predict how the resolution of the Iran war will affect the North American float glass sector,” Edge says. “Any reduction in geopolitical instability is generally positive for business and global trade; the direct impact on our industry is likely to be limited.”
Cumulative trade tensions with Canada continue to affect the market
But while the impacts of geopolitical tensions remain unclear, difficulties closer to home have had greater impact on the float glass sector, according to Edge. “The greater challenge for the float glass sector has been the cumulative effect of several years of supply chain disruptions, inflationary pressures, energy market volatility, and broader economic uncertainty,” he says. “Even if the conflict subsides, many of those underlying factors will remain.
Specific disruptions, such as constraints on shipping routes or energy markets, can have localized impacts on production costs and logistics. However, for North American float glass producers, long-term growth is more likely to be driven by regional factors such as construction activity, manufacturing investment, energy costs, and trade relationships within North America. In that respect, the economic relationship between Canada and the United States will likely have a greater influence on the sector’s growth prospects than developments in Iran.”
Edge says that beyond the Iranian war, the ever-growing trade tensions between the United States and Canada may pose another challenge for the entire North American float glass sector. An example is the recent decision by the United States to decline the renewal of the U.S.–Mexico–Canada Agreement, or USMCA, free trade deal in its current form. Mexico and Canada each confirmed that they wished to extend the agreement for a further 16-year term, but the United States declined.
According to Edge, while the North American trade relationship, particularly in the glass sector, is unlikely to change overnight, all investment decisions are influenced as much by confidence and predictability as by trade rules themselves.
“The North American float glass and fenestration supply chain has been built on the assumption of a highly integrated regional market,” Edge explains. “Any move that creates uncertainty about that framework's future can affect long-term planning, capital investment, and perceptions of North America as a stable manufacturing region. For the float glass sector, the greater concern is not necessarily the legal withdrawal from an agreement, but the gradual erosion of confidence in the long-term vision of North America as a unified market.”
As the United States withdraws its trade cooperation with Canada, the country may seek other sources, including China. According to Edge, there is potential for significant trade between Canada and China, and increased participation from Asian suppliers in both glass and finished products entering the Canadian market.
“Looking further ahead, I would not rule out a Chinese float glass manufacturer investing directly in Canada,” Edge says. “Float glass plants are long-term investments, and Canada offers access to raw materials, energy resources, and a stable business environment. Whether such an investment occurs would depend on market demand, trade policy, and the broader economic relationship between the two countries.”
