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General comment Primary data was collected directly from CAMELEO's production site and reflects current manufacturing practices. No data used is older than 10 years. Background processes such as energy, transport, and raw materials were modeled using the Ecoinvent v.3.10 database. Data quality was assessed according to ITB verification standards, including consistency, completeness, and representativeness. No mass balance approach was used.
The environmental impacts have been allocated to two main product categories: dry products (e.g. Cemmental, dry CraftClay) and wet products (e.g. Cameleo, liquid CraftClay). The wet products are derived from dry product bases by adding water during the formulation process. Therefore, emissions and inputs have been proportionally allocated to both product categories, considering both mass and process intensity (e.g. mixing, dispersion, packaging). Shared impacts such as energy, auxiliary materials, and emissions were distributed according to mass contribution and functional similarity. Recycled content and packaging were modeled using the avoided burden approach. No environmental benefits were claimed beyond the system boundary.
The analysis includes material inputs such as mineral binders (cement, clay, lime), fillers, pigments, water, and additives. Wet products involve additional water and mixing energy. Production waste and packaging waste were included. Excluded processes (e.g. transport of workers, capital equipment) represent less than 5% of total impact per EN 15804+A2. No credits were allocated for recycling packaging waste beyond system boundaries.
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