EPDs for Insulating Glazing Units in the U.S.
Planning an IGU EPD in 2026? Here is the complete data picture for the United States, translated for manufacturers. We cover who is publishing, which program operators dominate, the PCRs competitors pick, and when renewals will pinch. If you call them insulating glazing units, insulated glass units, IGUs, dual‑pane, triple‑pane, or “double glazing,” this guide has you covered.
Why IGU EPDs punch above their weight in specs
Insulating glazing units often decide facade packages because a product‑specific, third‑party verified EPD removes guesswork in embodied‑carbon calculations. Without one, project teams default to conservative estimates, which quietly pushes a product out of the running on carbon‑sensitive jobs. You do not need the absolute lowest number to win. You need a credible, current declaration that keeps doors open.
The U.S. IGU EPD picture at a glance
Across the last five years, we see 23 currently valid IGU EPDs in the United States, published by 5 manufacturers and handled by 3 program operators, using 2 distinct PCRs. That is a tight field, which makes clear positioning possible if you act now.
Program operators buyers actually see
ASTM International accounts for the bulk of current IGU EPDs with 16 declarations from a single manufacturer. UL handles 5 EPDs across 3 different manufacturers, which signals broader adoption. Smart EPD LLC appears on 2 EPDs from one manufacturer. The takeaway is simple. ASTM is the volume leader here, UL is the most cross‑manufacturer, and Smart EPD shows up on the newest electrochromic entry.
Manufacturer leaderboard and what it means
Viracon leads with 16 current IGU EPDs. Saint‑Gobain GLASS shows 3. SageGlass has 2. View and CertainTeed post one each. If you fabricate IGUs and are not on that list, competitors are shaping the narrative in your place. Volume is not everything, yet a family of SKUs with coherent declarations makes sales work faster.
PCR choices that win specs
A PCR is the rulebook of Monopoly. Ignore it and the game falls apart. In U.S. IGUs, one rulebook clearly dominates.
| PCR used | EPDs | Latest expiry |
|---|---|---|
| Part B: Processed Glass | 21 | Aug 19, 2029 |
| Part B: Requirements on the EPD for windows and doors | 1 | Mar 1, 2028 |
| Unknown PCR | 1 | Oct 1, 2026 |
Teams preparing a new EPD should start by matching the dominant PCR, then check timing. Picking a PCR with a longer runway reduces back‑to‑back updates when you least want them. If your product straddles categories, a great EPD partner will map the competitive set and confirm the right fit before modeling.
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Release tempo since 2021
Momentum peaked recently, with a notable surge in 2023.
| Year | IGU EPDs issued |
|---|---|
| 2021 | 4 |
| 2022 | 0 |
| 2023 | 17 |
| 2024 | 2 |
| 2025 | 0 |
Many teams released comprehensive bundles in 2023, then focused on sales enablement and specification updates. If you are starting in 2026, you are not late. You are drafting behind a clear pattern.
What expires when and how to plan headroom
Looking only at the next five years, four IGU EPDs are due in 2026, all clustered on Oct 1. The big wave lands in 2028 with 17 expiries, mostly mid‑September for Processed Glass and one Windows and Doors EPD on Mar 1. Two more reach the finish line on Aug 19, 2029. Practical move. Backcast from your key bid cycles and plant shutdown windows, not the last day of validity. PCRs can update before your EPD expires, so renewal timing is about workload smoothing as much as compliance. EPDs do not become invalid just because a PCR gets revised, but the next renewal must align with the new rulebook.
The newest EPD worth knowing
Latest in this category is an Electrochromic Insulating Glass Unit, triple‑pane, issued on Aug 19, 2024 for SageGlass Saint‑Gobain by Smart EPD LLC under Part B: Processed Glass. It runs through Aug 19, 2029. Think of it as sunglasses that know when clouds move. Dynamic glazing keeps occupant comfort high and can trim HVAC peaks while keeping the view.
Most teams used an EPD service provider
Twenty‑two of the 23 current EPDs were prepared with an external EPD consultant or service provider. That aligns with what we see across building products. The heavy lift is not the software. It is getting clean, auditable plant data and running a crisp review cycle. If you prefer a partner that handles data collection and keeps your engineers focused on production, consider an EPD service provider like Parq. We publish with the operator you choose and keep the process moving with white‑glove project management.
Notable absences in public registries
As of Jan 22, 2026, we did not find current U.S. IGU EPDs under common fenestration categories for AGC Glass North America and Cardinal Glass Industries. Oldcastle BuildingEnvelope, Trulite, and Press Glass also did not appear with current IGU EPDs in the public registry under typical IGU categories. These firms may publish under different categories such as flat glass, list European‑focused EPDs, or have declarations in progress. If you represent one of these brands, a swift product‑specific IGU EPD would immediately change competitive math in specs. That is an easy win to capture in 2026.
What to do next if you are starting now
Pick the PCR most competitors use unless a different scope clearly benefits your product. Choose a program operator that matches your market and review cadence. Build a renewal plan that avoids the 2028 cluster if possible. Keep your first product broad enough to serve multiple SKUs, then layer in variants once the data engine hums. It sounds simple, but the execution is where time vanishes. We can help you keep momentum and publish fast.
One last housekeeping note
This article relies on the global public registry of EPDs used widely by architects and specifiers. Because of occasional loading delays, some late‑2025 EPDs may not be reflected yet. Want the full, up‑to‑date dataset and a quick sanity check on PCR fit for your IGUs? Connect with me on LinkedIn and send a note. Happy to hop on a short call, share the background data, and talk through the fastest route to a bankable IGU EPD. Definately worth the time.
Frequently Asked Questions
What is the most common PCR used for IGU EPDs in the United States from 2021 to 2025?
Part B: Processed Glass dominates with 21 of 23 current EPDs, followed by a single EPD under “Part B: Requirements on the EPD for windows and doors,” and one with an unknown PCR.
Which program operator handles the majority of current IGU EPDs in the U.S.?
ASTM International, with 16 EPDs from one manufacturer. UL covers 5 EPDs across 3 manufacturers, and Smart EPD LLC appears on 2 EPDs from one manufacturer.
When is the biggest renewal crunch for IGU EPDs?
In 2028, with 17 expiries concentrated around mid‑September, plus one on Mar 1. Two more EPDs expire on Aug 19, 2029, and four on Oct 1, 2026.
How many IGU EPDs were prepared by an external EPD service provider?
Twenty‑two of the 23 current EPDs indicate involvement of an EPD consultant or service provider.
What was the latest IGU EPD issued in this dataset?
An Electrochromic IGU (TGU) by SageGlass Saint‑Gobain, issued Aug 19, 2024 by Smart EPD LLC under the Processed Glass PCR, valid until Aug 19, 2029.
About the Author
With a passion for sustainability and a love for complex data, Toby helps manufacturers efficiently collect data from across their organization and get their EPDs done right. He’s especially interested in how AI can support human expertise, helping R&D and factory teams work faster, smarter, and with less friction.
