AeroShield Materials has become the first aerogel product ever listed in the International Glazing Database, with center-of-glass U-values as low as 0.13 in a standard double-pane IGU. For spec writers chasing aggressive thermal targets without reframing, this changes the math.
The First Aerogel Entry in the IGDB
In a development that could reshape how architects and IGU fabricators approach high-performance glazing, AeroShield Materials has announced that its transparent aerogel glazing has been officially tested and listed in the International Glazing Database (IGDB)—the first aerogel product of any kind to achieve this milestone.
The listing matters because the IGDB, maintained by Lawrence Berkeley National Laboratory, is the data backbone for virtually every fenestration energy calculation done in North America. Until a product is in the database, manufacturers and consultants can't model it in LBNL's WINDOW software, NFRC simulations, or the COMcheck/REScheck workflows that drive code compliance.
The Performance Numbers
According to AeroShield, an aerogel-enabled double-pane IGU can achieve center-of-glass U-values of 0.13 to 0.16. To put that in context, conventional double-pane units with high-performance Low-E coatings typically land in the 0.24–0.29 range, while triple-pane assemblies are usually required to break below 0.20.
Key technical details from the announcement:
- The aerogel is bonded directly to the glass surface, allowing it to be handled and fabricated within existing IGU production processes
- It is compatible with a range of glass thicknesses and Low-E configurations
- The transparency of the aerogel means manufacturers can hit aggressive U-value targets without sacrificing visible light transmission or changing the solar heat gain coefficient
- Manufacturers and simulation partners can now model AeroShield-enabled configurations directly in LBNL's WINDOW software or equivalent tools
As CEO Dr. Elise Strobach put it, a center-of-glass U-value of 0.13 in a double-pane unit changes the conversation about what is possible without moving to triple pane.
Why This Matters for Spec Writers
The practical implication is straightforward but significant: projects facing tightening energy codes—New York's Local Law 97, Boston's BERDO, Washington's Clean Buildings Performance Standard, and the latest IECC adoptions—have been pushed toward triple-pane assemblies to meet U-factor targets. Triple-pane brings its own headaches:
- Heavier IGUs that often require beefier framing, redesigned curtain wall mullions, and reinforced hardware
- Higher embodied carbon from the additional glass lite and second cavity
- Longer lead times and limited domestic fabrication capacity for thin-triple alternatives
- Logistics challenges around weight, handling, and installation crew sizing
If AeroShield's data holds up in real-world fabrication, contract glaziers and curtain wall fabricators get a credible path to triple-pane thermal performance using their existing double-pane production lines, spacers, and frame inventories. That has direct cost and schedule implications for any project where the envelope is on the critical path.
What to Watch as Specifications Develop
IGDB listing is a foundational step, not a finish line. Before architects can confidently spec aerogel-coated glass on a Division 08 88 00 schedule, several questions need to be resolved:
- Fabricator availability. Which IGU lines are licensed or equipped to apply the aerogel? AeroShield says the material works within existing IGU production processes, but that ecosystem still has to be built out.
- Durability and warranty. How does the aerogel layer perform under decades of thermal cycling, UV exposure, and edge-seal stress? Long-term field data on aerogel-in-IGU configurations is still thin.
- Cost premium versus triple-pane. The economic case depends on where this lands relative to thin-triple IGUs and emerging vacuum insulating glass (VIG) products now reaching the market.
- NFRC certification path. IGDB inclusion enables modeling; full NFRC-certified ratings on assembled products are what end up on label stickers and code documents.
The Bigger Picture
The race to crack sub-0.20 center-of-glass U-values without a third lite is heating up. Thin triples, VIG, suspended films, and now aerogel coatings are all competing for the same spec lines. Each approach has different trade-offs in weight, thickness, light transmission, embodied carbon, and supply chain maturity.
For architects and envelope consultants, the takeaway from AeroShield's IGDB listing isn't that the industry has a new silver bullet—it's that the technology pipeline for high-performance double-pane glazing is finally producing options that can be modeled, specified, and rated through standard industry channels. That alone shifts what's plausible on the next round of code-driven envelope upgrades.