All kinds of sheet material joints are suitable for using butyl tape for water and airtight treatment, for example: 1. Waterproof treatment of new construction projects, underground waterproofing, waterproofing of structural construction joints, and the watertight treatment of high molecular waterproof roofing materials. 2. Waterproof and airtight treatment of construction joints in subway tunnel structures in municipal engineering. 3. Sealing and waterproof treatment of color pressed steel plate joints in steel structure building factory for airtightness, waterproofing, and shock absorption. 4. Adhesion of cement, wood, PC, PE, PVC, EPDM, CPE materials. 5. Waterproof and airtight treatment of interfaces, end parts, and special-shaped parts of special-shaped materials. 6. The airtight and waterproof treatment of doors and windows in civil residential buildings, the airtight and waterproof treatment of ventilation ducts, and the application of building decoration can all be applied.