The production impact of insulation materials is often overlooked because insulation is mainly judged by its energy-saving effect during use. That saving is important, but the material itself also has an environmental footprint from raw materials, production, transport and installation.
In the circular-insulation and biobased-insulation analyses, this distinction is central. A material can reduce heating demand and still differ strongly in embodied impact. Comparing environmental costs, CO₂ storage and end-of-life options makes the choice of insulation more complete and prevents one-sided steering on energy performance alone.