Exterior Paint (1L)

Material Composition Assumptions

Exterior paint formulations contain several key components that drive environmental impact. Pigments such as titanium dioxide, iron oxides, and organic colorants represent approximately 200-300 grams per liter and constitute the primary visual components. Binders including acrylic resins, polyurethane compounds, and alkyd materials make up roughly 250-400 grams per liter, providing adhesion and durability properties.

Water serves as the primary solvent in most North American formulations at 400-600 grams per liter, while solvent-based variants use xylene and toluene compounds. Various additives including preservatives, thickening agents, and leveling compounds account for 50-100 grams per liter. Mineral fillers such as calcium carbonate and silica contribute 100-200 grams per liter to enhance coverage and reduce costs.

The total weight per liter typically ranges from 1.2 to 1.4 kilograms depending on pigment loading and specific gravity of components. Pigments and binders together represent the highest carbon intensity materials due to energy-intensive production processes.

Manufacturing Geography

Paint manufacturing occurs primarily in China, the United States, and Germany, driven by proximity to large construction markets and established chemical industry infrastructure. China dominates global production volume through integrated petrochemical complexes that supply both raw materials and finished products.

The manufacturing region assumption uses China’s grid intensity of 540 gCO2/kWh due to the country’s significant production share and coal-heavy electricity mix. This grid intensity directly affects Scope 1 and Scope 2 emissions from paint manufacturing facilities, including solvent processing, mixing operations, and quality control testing.

European and North American facilities typically operate with lower grid intensities but serve smaller market volumes, making the China-weighted assumption representative for global average paint products.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	540 gCO2/kWh	2.7	Baseline
United States	400 gCO2/kWh	2.5	-7%
Germany	350 gCO2/kWh	2.4	-11%
India	650 gCO2/kWh	2.9	+7%
Brazil	280 gCO2/kWh	2.3	-15%

Provenance Override Guidance

1. Raw material sourcing documentation showing titanium dioxide and resin supplier locations with associated transportation distances and carbon intensities.

2. Manufacturing facility energy consumption records including electricity usage, natural gas consumption, and renewable energy certificates for the specific production period.

3. Product formulation specifications detailing exact pigment concentrations, binder types, and solvent ratios that affect carbon intensity calculations.

4. Transportation and logistics records showing shipping methods, distances, and packaging materials from manufacturing facility to distribution points.

5. Product durability testing results demonstrating expected service life and recoating intervals that influence per-year carbon amortization calculations.

Methodology Notes

• The CCI score represents cradle-to-gate emissions for one liter of exterior paint including raw material extraction, manufacturing, and distribution to retail locations.

• Scope 3 emissions dominate the profile due to carbon-intensive pigment and binder production, particularly titanium dioxide mining and processing operations.

• The functional unit assumes standard coverage rates of 8-12 square meters per liter applied in two coats for typical exterior surfaces.

• Application equipment emissions are excluded from the boundary as they vary significantly by project scale and contractor practices.

• End-of-life impacts receive minimal weighting due to the long service life of properly applied exterior coatings and limited disposal volume per application cycle.

• Data gaps exist for emerging bio-based binder technologies and recycled content pigments that may reduce future carbon intensities.