This Lifecycle Assessment (LCA) examines the environmental impact of Lathams Sansin-coated Accoya cladding, assessing the cradle-to-gate lifecycle stages, including material sourcing, transportation, manufacturing, coating application, and packaging. Conducted in compliance with EN 15804: 2012 + A2: 2019 and PCR 2019:14 v1.3.3, the study provides a comprehensive analysis of resource consumption, waste generation, and energy use, enabling informed decision-making for sustainable construction practices.

The results indicate that per 1m² of Sansin-coated cladding, 21.00 kg of CO₂e emissions are produced, decreasing to 7.38 kg CO₂e when biogenic carbon uptake is considered. As with the uncoated version, the Accoya wood remains the dominant environmental hotspot, with additional but relatively minor impacts from the Sansin coating process, transportation, and energy consumption. While the application of the Sansin sealer adds an extra step to the manufacturing process, its contribution to overall environmental impact remains small compared to the raw material itself. The study underscores that the most effective strategy for reducing the product’s carbon footprint is minimising wood waste during production. These findings offer key insights for environmentally conscious consumers and industry professionals looking to balance durability with sustainability in cladding materials.