Council hears concerns that CLT baseline numbers could disadvantage Washington manufacturers

Aug 4, 2026

Members debated adding cross-laminated timber (CLT) to the embodied-carbon materials table and questioned a 134 kg GWP baseline that mixes North American (including Canadian) data, warning it may not represent regional U.S. manufacturing.

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Councilors discussed whether to include cross-laminated timber (CLT) in the materials table used for product-compliance calculations and whether the baseline Global Warming Potential (GWP) value under consideration accurately reflects U.S. manufacturers.

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