TPO (thermoplastic polyolefin) hot welding construction is a common installation technology for building roof waterproofing systems, which has good weather resistance and waterproof performance. During the construction process, the TPO membrane material is first laid on the roof base surface, and the seams are heated by a hot air welding machine until the surface of the membrane material softens and melts to form a strong welded joint. After welding, the seams are firmly connected to ensure seamless waterproofing. TPO hot welding construction has high construction efficiency and can effectively prevent moisture penetration. It is suitable for all types of building roofs, especially in areas with more stringent environmental requirements.