On the first of August, 2023 CLF released Version 2 of our 2023 Material Baselines report, fixing typos, adding 8 remaining appendices, and improving accessibility of the report and appendices by adding bookmarks and hyperlinks to the PDF files. (No changes were made to the Baseline Table of Values content.)
The CLF Baseline values represent an estimate of industry-average GHG emissions for construction materials manufactured in North America. An overwhelming majority of the CLF Baselines published in this report are based on a North American industry-wide EPD if one was available at the time of publication. As such, it is appropriate to use this number as a rough estimate of a product type’s embodied carbon before a specific product has been selected or as a reference value against which product-level comparisons can be made.
