AeroShield Materials just became the first aerogel product ever listed in the International Glazing Database, with center-of-glass U-values of 0.13–0.16 in a double-pane IGU. For architects and window manufacturers, that number rewrites what's specifiable without moving to triple pane.
A First for Aerogel in the IGDB
AeroShield Materials has announced that its transparent aerogel glazing has been officially tested and listed in the industry-standard International Glazing Database—the first aerogel product of any kind to achieve the milestone. For spec writers and IGU fabricators who have watched aerogel promise triple-pane thermal performance for the better part of a decade without a clean path into standard fabrication, this is the moment the material finally lands inside the tools architects already use.
The headline number: an AeroShield-enabled double-pane insulated glass unit can achieve center-of-glass U-values of 0.13–0.16. For context, that's triple-pane territory delivered inside a two-lite assembly.
Why the IGDB Listing Matters More Than the Press Release
The IGDB is the reference dataset that feeds Lawrence Berkeley National Laboratory's WINDOW software and, by extension, virtually every NFRC-rated whole-window simulation, energy code compliance calculation, and manufacturer product line performance report in North America. Until a glazing product is in the IGDB with independently measured optical and thermal data, it effectively doesn't exist for large-scale specification work.
With AeroShield's aerogel glass now listed, window manufacturers and their simulation partners can model AeroShield-enabled IGU configurations directly in LBNL's WINDOW software or similar tools. That means:
- Fabricators can test different glass thicknesses and low-E combinations against a specific project's U-factor and SHGC targets before ordering a single lite.
- Architects can pull performance data into whole-building energy models without waiting on a custom test report.
- NFRC-rated product lines can be built around the aerogel layer, opening a certification path that wasn't previously available.
The Fabrication Story: Bonded to Glass, Not Between Panes
The technical piece that makes AeroShield's IGDB entry actionable rather than academic is how the aerogel is applied. AeroShield's aerogel is bonded directly to the glass surface, allowing it to be handled and fabricated within existing IGU production processes. That's the sentence IGU fabricators care about—no new sealant chemistry, no re-engineered spacer geometry, no exotic handling protocols for a fragile granular fill.
The aerogel is compatible with a range of glass thicknesses and low-E configurations, giving manufacturers the ability to meet or exceed higher thermal targets within standard double-pane systems. The aerogel's transparency means manufacturers can hit ambitious U-value performance targets without sacrificing visible light transmission or changing the solar heat gain coefficient of their products.
Delivering triple-pane performance without a third glass pane reduces reliance on custom sash and frame designs, lowers overall window weight, and helps meet growing demand for enhanced thermal performance.
What This Changes for the Spec Sheet
For architects working in cold climates or on projects chasing Passive House, LEED, or stringent state energy codes, the implication is direct. Double-pane frames are less expensive to build, ship, and install than their triple-pane counterparts. As AeroShield's leadership put it, a center-of-glass U-value of 0.13 in a double-pane unit changes the conversation about what's possible without moving to triple pane, and manufacturers operating in the double-pane segment can now compete for projects and specs that previously required triple-pane systems.
Translated to the field:
- Retrofit work where existing frames can't accommodate the depth or weight of a triple-pane IGU now has a compliant thermal path.
- Curtain wall and window wall systems designed around standard IGU thicknesses don't need to be re-detailed to hit aggressive U-factor targets.
- Structural loading on hardware, hinges, and anchor systems drops meaningfully compared to triple-pane, particularly on operable units.
The Supply Reality
One caveat worth flagging for spec writers: AeroShield is currently producing aerogel IGUs in limited volumes from its pilot manufacturing facility in Waltham, Massachusetts. This is a pilot-scale product with a first-in-class database listing, not a commodity yet. Early-adopter projects and manufacturer pilot programs are the near-term commercial reality.
But the IGDB listing is the piece that unlocks the pipeline. Once an insulating material is in the database, every downstream tool—NFRC certification, code compliance software, utility rebate calculators—can accept it. That's the foundation aerogel glazing has been missing.