Roof maintenance in Île-de-France requires careful preparation

Maintaining roofs in the Île-de-France region requires careful preparation, particularly when dealing with fragile tiles. Before performing moss removal (démoussage), it is essential to inspect the structural integrity of the roofing materials. Over time, exposure to rain, frost, and temperature fluctuations can cause tiles to become porous, cracked, or mechanically weakened.

High porosity in terracotta or concrete tiles increases water absorption, making them more susceptible to damage during freeze-thaw cycles. An improper cleaning process on fragile or highly porous tiles can lead to further cracking or water infiltration. Therefore, a professional inspection is recommended to identify broken tiles, assess material resistance, and determine if repairs or replacements are necessary before cleaning begins to ensure the roof's longevity and watertightness.