The Architectural Side: A Shift To Retrofit And Complexity

The commercial new-build pipeline in North America and Western Europe has slowed, but the retrofit and replacement market is absorbing capacity that was previously dedicated to ground-up projects. Older buildings from the 1980s and 1990s are undergoing facade replacements, and these jobs are materially more difficult for glass processors than new construction.

Here is why. A new high-rise allows the glazier to order glass in repetitive, standardized lite sizes. Retrofit work, by contrast, requires every unit to be field-measured. No two floors are exactly plumb after forty years of settlement. The OEM ends up processing thousands of unique dimensions, often with tight turnaround windows because the building cannot remain scaffolded indefinitely.

Several processors I spoke with last quarter noted that their insulated glass unit (IGU) lines are running at near capacity, but the mix has shifted. Warm-edge spacers-typically either TPS (thermoplastic spacer) or stainless steel with silicone foam-now account for over 70 percent of output in these retrofit jobs, compared to standard aluminum spacers which still dominate in speculative new construction where first cost remains the deciding factor. The retrofit market demands thermal performance, and that means processing lines capable of handling softer spacer materials without compromising the gas fill retention.