WATERPROOF STRUCTURE OF EXTERNAL WALL JOINT

To drain stably even when some variance is present, and to reduce the number of components.SOLUTION: A waterproof structure of an external wall joint has: a box-shaped first drainage member 20 fitted to a corner of a lower left external wall panel 3; and a box-shaped second drainage member 40 fitted to a corner of a lower right external wall panel 4. A first inclined water conveyance part 21 which is inclined downwardly toward a longitudinal joint 6 side is provided above the first drainage member 20. A water conveyance lip part 22 which is lowered from the indoor side to the outdoor side while extending to the second drainage member 40 side is provided at a lower end of the first inclined water conveyance part 21. A second inclined water conveyance part 41 which is inclined downwardly toward the longitudinal joint 6 side is provided above the second drainage member 40. A water conveyance recess part 42 which is lowered from the indoor side to the outdoor side while projecting toward the first drainage member 20 side is provided at a lower part of a left side face 40d of the longitudinal joint 6 side of the second drainage member 40. A tip of the water conveyance lip part 22 is situated at the second drainage member 40 side than a left end of the first drainage member 20 side of the water conveyance recess part 42 when viewed from the upward and indoor side.SELECTED DRAWING: Figure 2 【課題】多少のバラツキがあっても安定的に排水し、かつ部品点数を抑える。【解決手段】左下外壁パネル３の角部に取付けられた箱型の第一排水部材２０と、右下の外壁パネル４の角部に取付けられた箱型の第二排水部材４０を有し、第一排水部材２０の上部には、縦目地６側に向かって下降傾斜する第一傾斜導水部２１が設けられ、第一傾斜導水部２１の下端には第二排水部材４０側に延びるとともに屋内側から屋外側に下降する導水リップ部２２が設けられ、第二排水部材４０の上部には、縦目地６側に向かって下降傾斜する第二傾斜導水部４１が設けられ、第二排水部材４０の縦目地６側の左側面４０ｄ下部には第一排水部材２０側に向けて突出するとともに屋内側から屋外側に下降する導水凹部４２が設けられ、上方及屋内側から視た場合、導水リップ部２２の先端は、導水凹部４２の第一排水部材２０側の左端よりも第二排水部材４０側に位置している。【選択図】図２