What role does whitewashing of walls and roofs play in keeping Mallorca homes cool?

Whitewashing the walls and roofs of homes in Mallorca plays a significant role in maintaining cooler indoor temperatures, especially in the region’s hot Mediterranean climate. The practice involves coating exterior surfaces with a lime-based white paint that reflects a substantial portion of the intense sunlight. This reflective property helps reduce the amount of heat absorbed by the building materials throughout the day, thereby lowering the indoor temperature and creating a more comfortable living environment. This traditional technique is not only practical but also aesthetically pleasing, contributing to the characteristic bright, clean appearance of many Mallorcan villages.

In addition to its cooling effect, whitewashing also offers protective benefits. The lime-based paint is breathable, allowing moisture to escape from the walls, which prevents dampness and mold, issues that can be exacerbated by the humid summer air. Furthermore, the alkaline nature of lime works as a natural disinfectant, preserving the integrity of the building's surfaces over time. This combination of functional advantages makes whitewashing an economical and environmentally friendly choice in the region.

Overall, the use of whitewashing on exterior surfaces is a clever adaptation to Mallorca’s climate, reducing reliance on artificial cooling methods such as air conditioning. By reflecting sunlight and keeping interiors cooler, whitewashing enhances energy efficiency and comfort for residents. It remains a cherished tradition, harmonizing with the island's cultural heritage while serving an important practical purpose.