PAINT FILM WATERPROOFING METHOD

PROBLEM TO BE SOLVED: To provide a paint film waterproofing method capable of forming a smooth and seamless paint film waterproofing material without producing a step, a joint, and the shape of a fixing device on the surface of a waterproofing layer by providing sufficient water sealability and strength to the joint between adjacent sheets and securing a permeability between a substrate and the insulation sheets so that bulge or breakage does not occur in a waterproofing paint film laid down on the sheets by the effect of moisture on the substrate and the peeling of a connection part due to the expansion and contraction of the sheet itself when the plurality of sheets are laid down on the substrate onto which waterproofing is applied. SOLUTION: When the plurality of sheets are laid down on the substrate onto which waterproofing is applied, the sheets are laid down so that the end part of the sheet is overlapped with the end part of the adjacent sheet, and fixed to the substrate so that a fixing device can be passed through the overlapped portion of the two sheets. The fixing device and the upper part of the sheets are reinforced by sticking reinforcing cloth thereon. Then, after a step correction is performed, the paint film waterproofing material is stacked thereon. COPYRIGHT: (C)2004,JPO