Feature Short

Apples to Pineapples: Four Reasons You Can’t Compare EPDs

We’d love to use transparency tools to compare products “apples-to-apples.” But we’ve got a long way to go.

One big reason for environmental product declarations (EPDs) is to allow people to compare one product to another: if you put five cladding EPDs side by side, you should theoretically be able to choose the cladding product with the smallest footprint.

Yet experts warn—strongly—against comparing EPDs to one another. Where’s the disconnect?

Published August 3, 2015