The replacement of ordinary terracotta tiles with glazed tiles is the long-term experience of human beings in the use of building materials, and it is also a trend in the development of roof tiles in the future. The use of glazed tiles improves the aesthetics and reliability of buildings. In ancient times, ordinary people could not use glazed tiles, nor did they have this economic strength.

The important feature of glazed tiles is waterproofness, which is also the main reason why glazed tiles replace ordinary terracotta tiles. The use of glazed tiles in ancient palaces and temples takes advantage of their advantages of impermeability, fast drying after rain, and no increase in the weight of tile roofs. The roof materials of ancient buildings in my country generally include glazed and terracotta tiles. Compared with ordinary tiles, glazed tiles have very high resistance to weathering. Some ancient architectural glazed tiles inherited from ancient times have not been completely damaged after hundreds of years. Ordinary terracotta is easily weathered in the air. The so-called weathering of the tile means that the surface of the tile exposed to the air gradually appears powdery or cracked under the action of external factors. Studies have shown that salt crystallization is the main reason for the destruction of ordinary terracotta. Due to factors such as wind and light, the moisture in ordinary terracotta tiles will evaporate into the atmosphere, while the soluble salt cannot evaporate but can only stay on the surface of the tile, and generate expansion force, making ordinary tiles into pieces or powder.