Because clay tile roofs are exposed to the above pollutants for a long time, regular cleaning is particularly important. Although clay tiles are durable, the accumulation of pollutants may cause a series of problems that affect the service life and function of the roof.

According to many studies and actual cases, the expected lifespan of Roman clay tiles is generally between 50 and 100 years, or even longer. This lifespan far exceeds that of many other roofing materials, such as asphalt tiles and metal tiles.

After high-temperature firing, the material structure of flat clay tiles changes, the impurities in the clay are decomposed, the internal pores are reduced, and the density of the tiles is significantly increased. This high-temperature firing process gives flat clay tiles a higher waterproof ability.

High-quality clay tiles can withstand a static weight of about 150-200 kilograms per square meter when laid reasonably. This load-bearing capacity is mainly used to resist natural loads such as snow accumulation and falling branches.

The water flow intensity of high-pressure water guns is very strong, especially when the water flow is directly aimed at the edges or gaps of tiles, which can easily cause tiles to crack or break. Especially when the wrong water pressure or nozzle angle is used, the surface of the tile may be eroded, weakening its protective layer.