EPD Development Case Study for Construction Product | DEISO

EPD Development for a Precast Concrete Block in the European Construction Market

This illustrative case study demonstrates how DEISO can structure an Environmental Product Declaration development process for a construction product using module-based life cycle logic and quantified environmental indicators. The scenario is designed to show how product-level environmental information can be organized, interpreted, and translated into a credible EPD-style technical output.

Case Positioning

This is an illustrative technical case study prepared to demonstrate DEISO’s EPD development and technical review approach. It does not represent a real client engagement, a real manufacturer, or confidential product data. It is intended as a representative scenario showing how a structured environmental product declaration can be prepared for a construction product using module-based lifecycle assessment logic.

Scenario Overview

• Product: Precast concrete block
• Market Context: European construction market
• Declared Unit: 1 tonne of product
• Assessment Logic: EPD-style, module-based lifecycle structure
• Reference Structure: EN 15804-style product stage and downstream module logic
• Assessment Focus: Environmental indicators, module breakdown, hotspot analysis, and scenario comparison

Business Context

In this illustrative scenario, the manufacturer wanted to prepare a structured environmental declaration for a construction product to strengthen market credibility, support customer requests, and improve product-level sustainability communication. The company had product composition and operational data available, but needed a disciplined framework for converting those inputs into an EPD-style environmental profile.

The key challenge was not only to quantify the environmental impacts, but also to identify the most material lifecycle stages, test improvement scenarios, and organize the results in a format compatible with technical review and future verification-oriented workflows.

DEISO Technical Approach

DEISO’s methodological workflow for this type of EPD development case includes:

• Definition of product scope and declared unit
• Mapping of lifecycle modules and system boundaries
• Compilation and structuring of material and energy data
• Selection of impact assessment indicators relevant to EPD reporting
• Contribution analysis by module and process
• Scenario modeling to test potential product improvement strategies

Illustrative Results Summary

Overall Product-Level Results

• Declared unit: 1 tonne of precast concrete block
• Total GWP: 184.6 kg CO2e per declared unit
• Dominant lifecycle stage: A1–A3
• Best modeled scenario: Reduced clinker cement mix

Impact Category Highlights

In this scenario, global warming potential was the most commercially visible indicator, but the broader environmental profile also included acidification potential, eutrophication potential, ozone depletion potential, photochemical ozone formation potential, and fossil resource use. This broader indicator view is essential for maintaining EPD credibility and avoiding over-reliance on a single metric.

Module-Level Findings

The product stage, represented by modules A1 to A3, dominated the environmental profile. This is consistent with the material intensity of concrete products, where cement content, raw material processing, and manufacturing energy are usually the primary sources of burden. Transport to site and installation contributed additional impacts, while end-of-life burdens remained secondary in comparison. Module D introduced a limited downstream credit under the modeled recovery assumption.

Hotspot Interpretation

Material Hotspot

Cement binder was the dominant hotspot, accounting for the largest share of the total environmental burden. This is typical for cement-based construction products and immediately indicates that formulation-level strategies may be more powerful than purely operational adjustments.

Manufacturing and Logistics

Electricity use, diesel consumption, packaging, and transport contributed additional but smaller burdens. These areas remain relevant, especially where manufacturers want incremental improvement or where product reformulation options are limited.

Scenario Comparison Insights

Three improvement scenarios were modeled in this illustrative case: renewable electricity sourcing, optimized transport radius, and a reduced clinker cement mix. Among them, the low-clinker formulation delivered the strongest improvement, significantly reducing global warming potential and lowering other related impact indicators as well. This shows that product composition decisions can be decisive in EPD improvement strategy.

Strategic Implications

This illustrative case shows that EPD development is not only a reporting exercise. It is also a product intelligence process. When structured properly, it helps manufacturers identify which lifecycle stages drive burden, which inputs matter most, and where realistic environmental improvement opportunities exist before formal declaration and market communication.

The results also demonstrate the importance of pre-submission technical review. Even when indicator values are available, declaration quality still depends on boundary clarity, module logic, data consistency, and alignment with the applicable product category and program requirements.

Illustrative Improvement Pathways

• Reduce clinker intensity through alternative binder strategy
• Improve electricity mix for manufacturing operations
• Optimize logistics radius and freight efficiency
• Review packaging and pallet burden reduction options
• Strengthen product data structure for EPD review and submission readiness

Under the best modeled scenario, total GWP was reduced materially, demonstrating that design-stage and procurement-stage choices can significantly influence environmental declaration outcomes.

Conclusion

This illustrative case demonstrates how a construction product can be translated into a structured EPD-style environmental profile using module-based lifecycle assessment logic. By organizing impacts across product stage, transport, installation, end-of-life, and potential downstream credits, DEISO helps manufacturers move from raw product data toward a declaration-ready technical framework.

For manufacturers preparing for EPD development, customer disclosure, or pre-submission technical review, this type of structured analysis provides both environmental visibility and stronger confidence in the reporting pathway ahead.