The TPO (allyl triethylene propylene) on the surface of Himei waterproof tiles can alleviate the impact during hail weather, mainly due to the flexibility and elasticity of the material itself. TPO material has a certain elasticity. When hail hits its surface, TPO can absorb and disperse the impact force, thereby reducing the impact of hail on building roofs. In addition, the design structure and installation method of Himei waterproof tiles can further improve its impact resistance and effectively protect the building structure from damage.