| 摘要 |
PROBLEM TO BE SOLVED: To provide an underroof waterproof sheet with a fitting groove such that the sheets can be interconnected with reliable waterproofness through an efficient interconnecting operation while causing less pollution. SOLUTION: The underroof waterproof sheets with the fitting grooves cover the upper surface of the underside of the roof of each unit and are joined together via the fitting grooves to waterproof the overall surfaces of the plurality of units. The waterproof sheet has a rubber sheet portion with an area covering the upper surface of each unit, and a slide fastener half of a polymer molding secured to the end edge of the rubber sheet portion and having the fitting groove for interconnecting the waterproof sheets on adjacent units.
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