How do I use EPD data in a whole-building LCA?

To use EPD data in a whole-building lifecycle assessment: 1) Identify all timber products in the building (structure, cladding, internal finishes), 2) Determine quantities (m³ or kg for each product), 3) Select appropriate EPDs (manufacturer-specific preferred, generic acceptable for early design), 4) Multiply EPD impact values by quantities for each module, 5) Sum across all products and modules to get whole-building impacts, 6) Report per EN 15978 (buildings) with results expressed per m² of floor area per year. Software tools (One Click LCA, eTool, Tally) automate this process using EPD databases.

To use EPD data in a whole-building lifecycle assessment: 1) Identify all timber products in the building (structure, cladding, internal finishes), 2) Determine quantities (m³ or kg for each product), 3) Select appropriate EPDs (manufacturer-specific preferred, generic acceptable for early design), 4) Multiply EPD impact values by quantities for each module, 5) Sum across all products and modules to get whole-building impacts, 6) Report per EN 15978 (buildings) with results expressed per m² of floor area per year. Software tools (One Click LCA, eTool, Tally) automate this process using EPD databases.

Why this matters

This question relates to EPD (Environmental Product Declaration) for Timber: How to Read It, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ EPD (Environmental Product Declaration) for Timber: How to Read It

Related questions

• What is an EPD for timber?
• What lifecycle stages does a timber EPD cover?
• How is biogenic carbon reported in timber EPDs?

About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia.