How to Calculate, Communicate, and Reduce Emissions Across Composite Products
In today’s low-carbon procurement environment, selling architectural glass isn’t just about clarity, strength, or thermal performance—it’s about what goes into the product and how those inputs affect its carbon profile. Multi-material glass blends like laminated glass, IGUs, and Low-E assemblies present unique challenges for carbon accounting. You’re not dealing with a single material—you’re dealing with layers, spacers, coatings, and interlayers that all have their own emissions factors.
This blog walks through how distributors and specifiers can tackle product-level carbon footprinting for complex glass builds.
Key topics:
How to define system boundaries: cradle-to-gate, gate-to-site, or full lifecycle
GHG Protocol vs. EN 15804 vs. ISO 14067: which methodology fits your market
Breakdown of typical contributors to embodied carbon in a glass blend:
Float glass substrate (~13–18 kg CO₂e/m²)
Polyvinyl butyral (PVB) interlayers (~3–5 kg CO₂e/m²)
Low-E coating processes (~5–10 kg CO₂e/m²)
Spacer and sealants (~2–4 kg CO₂e/m²)
You’ll also learn:
How to work with EPDs from multiple suppliers to build a composite model
How to present per-unit GWP (Global Warming Potential) in a client-ready format
How carbon data influences specs for LEED v4.1, Buy Clean, and Net-Zero builds
Plus: we explore tools like One Click LCA and Tally for streamlining multi-layer calculations, and how to tie footprinting into competitive bid responses.
For glass distributors handling composite systems, this blog is your roadmap to building quantifiable ESG credibility—and turning carbon transparency into a sales advantage.
