BUILDING WATER PENETRATION PREVENTION STRUCTURE

• Main Authors: AZUMA TOMOAKI, ICHIMURA HITOSHI, SUGA MASANORI, OKUZAWA MARIKO
• Format: Patent
• Language: English; Japanese
• Published: 24.03.2023
• Subjects: BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; CEILINGS; FENCING; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; INSULATION OR OTHER PROTECTION OF BUILDINGS; MASTS; ROOFS; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL; WALLS, e.g. PARTITIONS

To provide a building water penetration prevention structure capable of preventing water penetration into a building from waterproof sheets adhered to heat-insulating surface materials such as exterior wall insulation when flooding around the building due to inland flooding, and the like.SOLUTION: A building water penetration prevention structure 1 includes: a foundation 11 of a building; a base 12 fixed onto the foundation; multiple pillars 2 fixed onto the base 12; a crossbar 21 fixed to the outdoor side of base 12; multiple pieces of exterior wall insulation 31 placed on the crossbar 21 over the outdoor side of the multiple pillars 2; an indoor elastic adhesive sealant 41 applied from the bottom of the joint and exterior wall insulation 31 over the exterior face of the crossbar 21 between two pieces exterior wall insulation 31; multiple breathable waterproof sheets 32 applied to the outdoor surface of the exterior wall insulation 31 and crossbar 21 with the indoor elastic adhesive sealant 41; and an outdoor side elastic adhesive sealant 42 that is applied in an area from the joint between the breathable waterproof sheets 32 and the lower edge side of the breathable waterproof sheet 32 up to the outdoor surface of crossbar 21.SELECTED DRAWING: Figure 1 【課題】内水氾濫等による建物周囲の冠水に対して、外壁断熱材等の断熱面材に接着される防水シートからの建物内への浸水を抑制することができる建物浸水抑止構造を提供する。【解決手段】建物浸水抑止構造１は、建物の基礎１１と、基礎上に固定された土台１２と、土台１２上に固定された複数の柱２と、土台１２の屋外側に固定された横桟２１と、柱２の屋外側に渡って横桟２１上に配置された複数の外壁断熱材３１と、外壁断熱材３１間の目地および外壁断熱材３１の下部から横桟２１の屋外面に渡って塗布された屋内側弾性接着シーリング剤４１と、屋内側弾性接着シーリング剤４１によって外壁断熱材３１および横桟２１の屋外面に貼付された複数の透湿防水シート３２と、透湿防水シート３２同士の接合箇所および透湿防水シート３２における下縁側から横桟２１の屋外面に至る領域に塗布された屋外側弾性接着シーリング剤４２と、を備える。【選択図】図１