Abstract
External Thermal Insulation Composite Systems (ETICS) enhance building aesthetics and optimize thermal performance while offering protection against weather, fire, and harmful agents. Key to these capabilities are properties of ETICS rendering. We have applied specialized organic renderings, including modified acrylic resins, additives, and reflective pigments, to mitigate color bleaching and stress cracking induced by high surface temperatures, resulting in improved color stability and water protection. In a practical application at a shopping center in Portugal, we observed reduced coating layer failures, better thermal resistance, and lower maintenance costs over one year. Subsequent research reveals the benefits of Near Infrared Reflective (NIR) pigments and nanocomposites such as titanium dioxide, which increase solar reflectance, enhance resistance to dirt, and promote self-cleaning. Synthetic colored inorganic pigments improve heat stability, thermal inertia, and mechanical resistance. The application of cool pigments also reduces surface temperature by up to 10 °C. These advancements in ETICS technology mark a significant step towards sustainable building practices.
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