LCA Modules & Stages 101
A1–A5, B1–B7, C1–C4… alphabet soup, meet spoon. This section breaks down life‑cycle assessment modules and stages with real‑world examples that finally make the “cradle‑to‑grave” process clear.
17 articles
EPD A1 to A3 vs A1 to A5
Trying to decide whether your next EPD should report A1 to A3 or A1 to A5? The answer shapes how buyers assess your prod...
EPD Life Cycle Assessment in Plain English
Confused about how an LCA turns into an EPD, what “A1–A3” even means, and whether any of this actually helps win specs. ...
Module D: Your EPD’s Second Life Credit
Manufacturers lose bids when they ignore the carbon story after demolition. Module D adds that missing chapter, turning ...
Module A: Upfront Carbon Decoded
Module A covers everything that happens before a product reaches the jobsite—extraction, processing, factory work, truck...
Module B: The Use Phase Carbon Hot Zone
Most EPD chats orbit raw materials, yet for many products the bigger climate bill arrives after the ribbon-cutting. Modu...
Module C: The End-of-Life Wild Card
Most teams sweat over raw-material data, then slap a generic “landfill” line on the last page of the LCA. Trouble is, en...
Functional Unit and Reference Service Life: How to Keep Comparisons Fair
If you have ever argued about who makes the “greener” concrete panel, odds are someone’s functional unit was mismatched ...
Life Cycle Inventory (LCI): From Numbers to Results
Most EPD delays start long before the verifier opens your report. The bottleneck is Life-Cycle Inventory (LCI) data that...
Master Modules A4 and A5 for Leaner EPDs
Months of plant data finally sit polished in a spreadsheet, yet your verifier still needs truck routes, pallet weights, ...
Module B: The Use Phase Reality Check
Manufacturers often obsess over A1–A3 raw-material numbers yet forget that specifiers keep scrolling to Module B. If you...
Life Cycle Assessment: The X-Ray of Product Impact
A new contractor spec drops on your desk, and there it is: “Provide LCA data.” If the term still feels like alphabet sou...
Modeling Installation Scrap in Construction EPDs
Set installation scrap too high and A5 balloons. Set it too low and credibility slips. For many products, verifier habit...
EPDs in Whole Building LCA
Whole-building LCA is where big carbon decisions get made. If your products show up as generic, the model assumes worst ...
Module D for 2026, decoded
Most teams nail A1 to A3 and stop at demolition. Module D is the after‑credits scene that can turn end‑of‑life into meas...
EPD Modules C1 to C4 for 2026
End of life is where many products lose the plot. C1 to C4 decide what happens when your product leaves service, and tho...
Module B 2026: B1 to B7 without guesswork
Upfront carbon grabs headlines, but the use phase decides who wins the spec. Module B is where your product either sips ...
EPD Modules A1 to A5 for 2026
Specs ask for A1 to A5 and teams nod, then wonder what data actually moves the needle. Here is the plain‑English map of ...
