GWP includes biogenic carbon storage (negative contribution)
Energy to dry lumber to <15% MC before laminating
Affects chain-of-custody and biogenic accounting
Estimates based on A1–A3 ecoinvent v3.12 emission factors. Results are indicative — not a certified EPD.
Our AI guide walks you through the full process step by step — no technical knowledge required. About 15 minutes.
Mass timber can store biogenic carbon, potentially achieving net-negative GWP. EPDs quantify this and differentiate sustainably-sourced products in specification.
Buy Clean compliance
California, Colorado, Oregon, Washington, and the Federal GSA now require EPDs for public procurement. Without one, you can't bid on these projects.
LEED v4.1 credit
Material Ingredient Reporting credits require manufacturer EPDs. Architects specifying green buildings increasingly mandate them.
Specifier preference
Major construction firms are implementing embodied carbon targets. An EPD showing a low GWP is a competitive differentiator.
Biogenic carbon storage is unique to this category — EPDs that properly account for sequestration can show net-negative results.
Upload your bill of materials
Drop any format — Excel, PDF, CSV, or describe your product in plain English.
AI matches to verified LCA data
TrueMatch maps each material to ecoinvent v3.12 processes with confidence scores.
Download your EPD
ISO 14025-aligned PDF with GWP results, Buy Clean compliance, and all methodology references.
Questions? Request a demo →
What is an EPD and why do I need one?
An Environmental Product Declaration (EPD) is a standardized document reporting the environmental impacts of your product, primarily carbon (GWP). They are increasingly required for public procurement, LEED v4.1 compliance, and Buy Clean legislation in multiple US states.
How accurate is this calculator?
The calculator uses published emission factors from ecoinvent v3.12 and industry EPD averages. Results are indicative (±15–25%) — accurate enough for benchmarking and compliance screening but not a substitute for a certified EPD.
How long does it take to generate a full EPD?
Most EPDs complete in 10–30 minutes once your BOM is uploaded. The AI handles material matching, impact calculation, and PDF generation. You review and approve each step.
What standards does Terrave follow?
Terrave follows ISO 14025 (EPD programme), EN 15804+A2 (product category rules for construction), ISO 14040/14044 (LCA methodology), and uses ecoinvent v3.12 for background LCA data.
Need a certified EPD?
Our team can walk you through the full EPD process — from bill of materials to a verification-ready document. No jargon, no LCA background required.