To provide weatherproofness constituted of outside surrounding bodies having side edge sections overlapping each other or butting them against each other on grounds by anchors inserting the surrounding bodies into their anchor inserting penetration holes to successively fix them sideways and overlapping the lower edge sections of the upstream side surrounding bodies on the upper edge sections of the downstream side surrounding bodies to fix and a surrounding structure of a building excellent in construction efficiency.

A longer shaped waterproofed sheet 2 with shorter dimensions at right angles to the longitudinal direction and having dimensions approximately coinciding with dimensions adding overlap dimensions of the surrounding bodies 1 vertically adjacent to each other to twice as long as vertical dimensions of the surrounding bodies 1 is constructed by locating the end edges on the downstream side parallel to the longitudinal direction on the upstream side slightly from the lower edges of the surrounding bodies 1 on the rear sides of them, the upstream side surrounding bodies 1 are fixed to positions slipped sideways by approximately 1/2 widths of them to the downstream side surrounding bodies 1 and, at the same time, positions of the anchors 5 fixing the upstream side surrounding bodies 1 are slipped sideways from the anchors 5 fixing the downstream side surrounding bodies 1.