<;P>;PROBLEM TO BE SOLVED: To provide a method for laying a sheet material, enabling even small-group people to easily efficiently lay a roof sheet material covering the skeleton part of a building, on the skeleton part even on a windy day, and to provide a temporal tacking tool for laying the sheet material. <;P>;SOLUTION: This laying method includes each of steps of putting a sheet material 30 into a hauling condition of folding from both the sides to the width direction center, lifting the sheet material 30 to a skeleton part 10 followed by laying on a ridge support 12a of the skeleton part 10, temporarily tacking the sheet material 30 to the ridge support 12a at a prescribed interval over the total length in the longitudinal direction, covering a plurality of transverse ropes 21 at a prescribed interval to cover the sheet material 30 after temporal tacking in the width direction followed by temporarily fixing near the ground surface on both the sides in the width direction, removing temporal tucking of the sheet material 30 to release the sheet material 30 from a hauling condition and develop over the skeleton part 10, and fully tightening and fixing a plurality of the temporarily fixed transverse ropes 21 after developing the whole sheet material 30. <;P>;COPYRIGHT: (C)2011,JPO&INPIT