| 摘要 |
PURPOSE:To prevent rainwater from infiltrating through the joining portion of a roof material by inserting a metal core material in the center portion of a sheet body in the width direction, while forming a nail driving portion on both ends and providing numbers of water stopper pieces protruding beyond the top of the sheet body. CONSTITUTION:A waterproof sheet A is formed by inserting a metal core material 3 in the center in the width direction of a sheet body 2 made of soft resin 2a. Both ends of the sheet body 2 are made as nail driving portions 4 in such a manner that the metal core material 2 will not be inserted. A number of water stopper pieces 5, 5 are provided protrudingly beyond the top surface of the sheet body 2 in one body with the soft resin 2a bisymmetrically and in parallel with each other on the basis of the center line of the sheet body 2 in the width direction. When a nail is driven into the nail driving portion 4 of the sheet body 2, the nail is driven only through the soft resin 2a and not through the metal core material 3. |
