To provide a construction method of a waterproof sheet for securing high sealability particularly for an in-and-out corner angle, easy in construction work, and superior in durability in long-term use; and a construction tool capable of easily and quickly processing operation, in construction of the waterproof sheet.
The construction tool 10 of the waterproof sheet is provided for waterproofing the in-and-out corner angle C by a corner patch 1 provided with a fusion surface 1b having a fusion layer 1a and having a shape of being brought into close contact with the in-and-out corner angle C, and is characterized by having a replaceable base part 5 having an outside surface 5a capable of closely contacting with a non-fusion surface 1c of the corner patch 1 and formed on a raw material having high heat conductivity, and a heat source supply part 3 supplying thermotherapeutic heat to the base part 5.
Koichi Kajisaki
Toshihiko Taniguchi
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