This document is intended for the architectural, engineering and construction (AEC) community involved in the selection, specification and review of lifecycle environmental impacts of building components. It has been observed in the marketplace that professionals are trying to compare Environmental Product Declaration (EPD) values, and the purpose of this document is to highlight challenges in comparison. The practice of comparing EPDs is not encouraged, nor always appropriate, and could lead to misleading conclusions.

This document was published in December 2020. All purchases will be electronically accessed or delivered.