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JP6963985B2 - Waterproof structure of the outer wall parting part and its formation method - Google Patents

Waterproof structure of the outer wall parting part and its formation method Download PDF

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JP6963985B2
JP6963985B2 JP2017238532A JP2017238532A JP6963985B2 JP 6963985 B2 JP6963985 B2 JP 6963985B2 JP 2017238532 A JP2017238532 A JP 2017238532A JP 2017238532 A JP2017238532 A JP 2017238532A JP 6963985 B2 JP6963985 B2 JP 6963985B2
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wall
waterproof structure
parting
water return
sheet
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JP2019105090A (en
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千絵 園田
悟志 松原
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Daiwa House Industry Co Ltd
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Description

本発明は、建物の外壁見切り部の防水構造とその形成方法に関する。 The present invention relates to a waterproof structure for a parting portion of an outer wall of a building and a method for forming the waterproof structure.

軒天材が、建物の外壁面材の上端を通って建物の内側まで延びている、所謂、軒天勝ち(外壁面材負け)の納まりにおいては、外壁面材の上端と軒天材の間に止水材を介在させることができ、外壁面材と軒天材の間の外壁見切り部の防水構造を容易に形成することができる。一方、建物の外壁面材の途中位置に軒天材の見切り部が位置する、所謂、外壁面材勝ち(外装材勝ち)の納まりでは、外壁面材に多数の凹凸が存在することから、外壁見切り部での完全な防水構造の形成は極めて難しくなる。 In the so-called eaves winning (losing the outer wall material) fit, where the eaves ceiling material extends to the inside of the building through the upper end of the outer wall material of the building, between the upper end of the outer wall material and the eaves ceiling material. A waterproof material can be interposed in the building, and a waterproof structure of the outer wall parting portion between the outer wall material and the eaves roof material can be easily formed. On the other hand, in the so-called outer wall material win (exterior material win), where the parting part of the eaves ceiling material is located in the middle of the outer wall material of the building, there are many irregularities on the outer wall material, so the outer wall Forming a completely waterproof structure at the parting section becomes extremely difficult.

ここで、外壁面材勝ちの納まりにおける、軒天見切り構造が提案されている。具体的には、軒天材の基端部と、建物の躯体に対して所定間隔を隔てて取り付けられた外装材の上端部と、の間に、軒天見切材を設けて外装材勝ちの構造とし、外壁内部の空間と屋根裏部とを連通させて外壁内部の通気路を確保する。さらに、軒天見切材の係合部の裏側が外装材の上端部表面に当接される構成とするものである(例えば、特許文献1参照)。 Here, an eaves-top parting structure has been proposed in which the outer wall material wins. Specifically, an eaves roof cutting material is provided between the base end of the eaves roof material and the upper end of the exterior material attached to the building frame at a predetermined interval to win the exterior material. The structure will be such that the space inside the outer wall and the attic are communicated to secure a ventilation path inside the outer wall. Further, the back side of the engaging portion of the eaves roof cutting material is configured to be in contact with the surface of the upper end portion of the exterior material (see, for example, Patent Document 1).

特開2002−97766号公報JP-A-2002-97766

しかしながら、特許文献1に記載の軒天見切り構造では、軒天見切り材と外装材の間の隙間から雨水等が建物内部に浸入する恐れがある。 However, in the eaves ceiling parting structure described in Patent Document 1, rainwater or the like may infiltrate into the building through the gap between the eaves parting material and the exterior material.

本発明は上記課題に鑑みてなされたものであり、外壁見切り部が、所謂、外壁面材勝ちの納まりにおいても、外壁見切り部において高い防水性を得ることのできる、外壁見切り部の防水構造とその形成方法を提供することを目的としている。 The present invention has been made in view of the above problems, and the outer wall parting portion has a waterproof structure of the outer wall parting portion, which can obtain high waterproofness in the outer wall parting portion even when the so-called outer wall material wins. The purpose is to provide a method for forming the same.

前記目的を達成すべく、本発明による外壁見切り部の防水構造の一態様は、建物の外壁面材の途中位置に見切り材の見切り部が位置する、外壁見切り部の防水構造であって、
前記外壁面材の上端から外壁面に亘って折り曲げられ、該上端に固定されている水返しシートを有することを特徴とする。
In order to achieve the above object, one aspect of the waterproof structure of the outer wall parting portion according to the present invention is a waterproof structure of the outer wall parting portion in which the parting portion of the parting material is located in the middle of the outer wall material of the building.
It is characterized by having a water return sheet that is bent from the upper end of the outer wall surface material to the outer wall surface and fixed to the upper end.

本態様によれば、外壁面材の上端から外壁面に亘って折り曲げられて配設されている水返しシートが外壁面材の上端に固定されていることにより、吹き込んでくる雨水を水返しシートで跳ね返すことができ、外壁見切り部において高い防水性を得ることができる。また、水返しシートが外壁面材の上端に固定されていることから、外壁面材の表面に柄模様(凹凸)がある場合においても、さらには、この凹凸が深い深掘り模様の場合においても、外壁見切り部における防水性が左右されることはない。 According to this aspect, the water-returning sheet that is bent and arranged from the upper end of the outer wall surface material to the outer wall surface is fixed to the upper end of the outer wall surface material, so that the rainwater that blows in can be discharged from the water-returning sheet. It can be repelled by, and high waterproofness can be obtained at the outer wall parting portion. Further, since the water return sheet is fixed to the upper end of the outer wall material, even when there is a pattern (unevenness) on the surface of the outer wall material, and even when the unevenness is a deep digging pattern. , The waterproofness of the outer wall parting part is not affected.

また、本発明による外壁見切り部の防水構造の他の態様は、前記水返しシートが前記上端に接着剤もしくは接着シートを介して固定されていることを特徴とする。 In addition, another aspect of the waterproof structure of the outer wall parting portion according to the present invention is characterized in that the water return sheet is fixed to the upper end thereof via an adhesive or an adhesive sheet.

本態様によれば、外壁面材の上端に水返しシートを容易に固定することができる。例えば、水返しシートをクリップ等で固定する形態と比べると、固定容易性は顕著である。また、接着固定であることから、例えばボルト固定などのように、水返しシートの上方に突出する突起物が存在せず、軒桁や野縁等の他部材との干渉の問題は生じない。 According to this aspect, the water return sheet can be easily fixed to the upper end of the outer wall surface material. For example, the ease of fixing is remarkable as compared with the form in which the water return sheet is fixed with a clip or the like. Further, since it is adhesively fixed, there is no protrusion protruding above the water return sheet as in bolt fixing, and there is no problem of interference with other members such as eaves girders and field edges.

また、本発明による外壁見切り部の防水構造の他の態様は、前記水返しシートが、変形性と伸縮性を有する樹脂製シートであることを特徴とする。 In addition, another aspect of the waterproof structure of the outer wall parting portion according to the present invention is characterized in that the water return sheet is a resin sheet having deformability and elasticity.

本態様によれば、外壁建込みの後施工部材と水返しシートが干渉した場合でも、水返しシートが変形もしくは伸縮することにより、後施工部材への損傷を抑制しながら後施工部材の施工を可能とすることができる。なお、ここで、「変形性」とは折れ曲がり性を意味しており、「伸縮性」とは水返しシートの厚み方向や幅方向に伸縮して体積変化できる性能を意味している。 According to this aspect, even when the post-construction member built on the outer wall and the water return sheet interfere with each other, the water return sheet is deformed or expanded and contracted, so that the post-construction member can be constructed while suppressing damage to the post-construction member. It can be possible. Here, "deformability" means bendability, and "stretchability" means the ability to expand and contract in the thickness direction and width direction of the water return sheet to change the volume.

また、本発明による外壁見切り部の防水構造の他の態様は、前記見切り材の先端で前記水返しシートが前記外壁面材に押圧されていることを特徴とする。 Further, another aspect of the waterproof structure of the outer wall parting portion according to the present invention is characterized in that the water return sheet is pressed against the outer wall material at the tip of the parting material.

本態様によれば、水返しシートのうち、外壁面に接触している箇所が見切り材の先端で外壁面材に対して見切り部の全延長に亘って押圧されていることにより、吹き込んでくる雨水による水返しシートの跳ね上がりが抑制され、より一層高い防水効果が得られる。なお、「見切り材の先端で水返しシートが外壁面材に押圧されている」なる構成は、見切り材の先端が水返しシートを直接外壁面材に押圧する形態の他にも、見切り材の先端に止水材が取り付けられていて、この止水材が水返しシートを外壁面材に押圧する形態(すなわち、見切り材の先端が間接的に水返しシートを外壁面材に押圧する形態)も含んでいる。 According to this aspect, the portion of the water return sheet that is in contact with the outer wall surface is pressed against the outer wall surface material by the tip of the parting material over the entire extension of the parting portion, so that the water is blown into the sheet. The splashing of the water return sheet due to rainwater is suppressed, and a higher waterproof effect can be obtained. In addition to the form in which the tip of the parting material presses the water return sheet directly against the outer wall material, the configuration of "the water return sheet is pressed against the outer wall material by the tip of the parting material" is also included in the parting material. A water stop material is attached to the tip, and this water stop material presses the water return sheet against the outer wall material (that is, the tip of the parting material indirectly presses the water return sheet against the outer wall material). Also includes.

また、本発明による外壁見切り部の防水構造の他の態様は、屋根に通じる吊木にて前記水返しシートが前記外壁面材に押圧されていることを特徴とする。 Further, another aspect of the waterproof structure of the outer wall parting portion according to the present invention is characterized in that the water return sheet is pressed against the outer wall material by a hanging tree leading to the roof.

本態様によれば、水返しシートのうち、外壁面に接触している箇所が屋根に通じる吊木で外壁面材に対して吊木の接触面で押圧されていることにより、吹き込んでくる雨水による水返しシートの跳ね上がりが抑制され、より一層高い防水効果が得られる。また、水返しシートのうち、吊木にて直接押圧されていない領域(吊木と吊木の間の領域)においても、吊木による押し付け効果によって防水性が高められる。 According to this aspect, the part of the water return sheet that is in contact with the outer wall surface is pressed by the contact surface of the hanging tree against the outer wall surface material by the hanging tree leading to the roof, so that rainwater is blown into the water return sheet. The splashing of the water return sheet due to the above is suppressed, and a higher waterproof effect can be obtained. Further, even in the area of the water return sheet that is not directly pressed by the hanging tree (the area between the hanging tree), the waterproof property is enhanced by the pressing effect of the hanging tree.

また、本発明による外壁見切り部の防水構造の他の態様は、前記外壁面材が、軒、棟もしくはケラバに通じる外壁面材、もしくは、バルコニーの笠木に通じる腰壁材のいずれか一種であることを特徴とする。 Further, in another aspect of the waterproof structure of the outer wall parting portion according to the present invention, the outer wall material is any one of an outer wall material leading to an eaves, a ridge or a keraba, or a waist wall material leading to a balcony cap tree. It is characterized by that.

本態様によれば、建物の様々な外壁見切り部において、本発明の防水構造の適用が可能になる。ここで、軒には、勾配軒と水平軒の双方の軒天が含まれ、軒の出が小さい、所謂軒ゼロと称される軒も包含される。棟は、例えば片棟(片流れ棟)構造の屋根の破風板下方の軒天と外壁面材の見切り部を意味する。ケラバは、軒に直交するケラバの破風板と外壁面材との見切り部を意味する。バルコニーは、腰壁の上に笠木が固定されるが、笠木と腰壁の間に防水材(乾式もしくは湿式)が配設される構造において、この腰壁(外壁面材)の上端であって笠木の下方において水返しシートが配設され、腰壁の上端に固定される。このように、様々な形態の屋根やバルコニー腰壁を有する建物において、外壁面に形成される様々な見切り部における防水構造に適用可能である。 According to this aspect, the waterproof structure of the present invention can be applied to various outer wall parting portions of a building. Here, the eaves include both sloped eaves and horizontal eaves, and also includes eaves with small eaves, so-called eaves zero. The ridge means, for example, the eaves above the gable plate of the roof of a one-sided ridge (one-sided flow ridge) structure and the parting part of the outer wall material. The keraba means a parting portion between the gable plate of the keraba orthogonal to the eaves and the outer wall material. In the balcony, the cap tree is fixed on the waist wall, but in the structure where a waterproof material (dry or wet) is arranged between the cap tree and the waist wall, it is the upper end of this waist wall (outer wall material). A water return sheet is placed below the cap tree and fixed to the upper end of the waist wall. As described above, in a building having various forms of roof and balcony waist wall, it can be applied to a waterproof structure in various parting portions formed on an outer wall surface.

また、本発明による外壁見切り部の防水構造の形成方法の一態様は、建物の外壁面材の途中位置に見切り材の見切り部が位置する、外壁見切り部の防水構造の施工方法であって
工場において、折り曲げられた水返しシートを前記外壁面材の上端から外壁面に亘って配設し、該上端に固定するプレ固定工程と、
前記水返しシートが固定されている前記外壁面材を現場搬送して建て込み、該外壁面材の途中位置に見切り材の見切り部を位置決めする見切り材施工工程と、を有することを特徴とする。
Further, one aspect of the method for forming the waterproof structure of the outer wall parting portion according to the present invention is a method of constructing the waterproof structure of the outer wall parting portion in which the parting portion of the parting material is located in the middle of the outer wall material of the building. In the pre-fixing step of arranging the bent water return sheet from the upper end of the outer wall surface material to the outer wall surface and fixing it to the upper end.
The outer wall material to which the water return sheet is fixed is transported to the site and built, and the parting material construction step of positioning the parting portion of the parting material at an intermediate position of the outer wall material is provided. ..

本態様によれば、予め工場において外壁面材に折り曲げられた水返しシートを固定し、水返しシートが固定された外壁面材を現場搬送して建て込むことにより、外壁面材を建て込んだ際に水返し材の配設が同時に行われ、施工効率性を高めることができる。また、現場にて水返しシートを取付けないことから、作業員による技量によって防水性が左右されることもない。 According to this aspect, the outer wall material is built by fixing the water return sheet bent in advance to the outer wall material in the factory and transporting the outer wall material to which the water return sheet is fixed to the site and building it. At the same time, the water return material is arranged at the same time, and the construction efficiency can be improved. In addition, since the water return sheet is not attached at the site, the waterproof property is not affected by the skill of the worker.

また、本発明による外壁見切り部の防水構造の形成方法の他の態様は、前記プレ固定工程において、前記水返しシートを前記上端に接着剤もしくは接着シートを介して固定することを特徴とする。 Further, another aspect of the method for forming a waterproof structure of the outer wall parting portion according to the present invention is characterized in that, in the pre-fixing step, the water return sheet is fixed to the upper end via an adhesive or an adhesive sheet.

本態様によれば、水返しシートが外壁面材の上端に接着固定されていることから、例えばボルト固定などのように、水返しシートの上方に突出する突起物が存在せず、従って、外壁面材の建込施工の後工程の際にこのような突起物が後工程で施工される他部材と干渉するといった問題は生じない。 According to this aspect, since the water return sheet is adhesively fixed to the upper end of the outer wall surface material, there are no protrusions protruding above the water return sheet, such as bolt fixing, and therefore, the outside There is no problem that such protrusions interfere with other members to be constructed in the post-process during the post-process of the wall material construction.

また、本発明による外壁見切り部の防水構造の形成方法の他の態様は、前記見切り材施工工程において、前記見切り材の先端で前記水返しシートを前記外壁面材に押圧することを特徴とする。 Further, another aspect of the method for forming a waterproof structure of the outer wall parting portion according to the present invention is characterized in that, in the parting material construction step, the water return sheet is pressed against the outer wall material by the tip of the parting material. ..

本態様によれば、水返しシートのうち、外壁面に接触している箇所を、外壁面材の建込後に施工される見切り材の先端で外壁面材に対して押圧することにより、吹き込んでくる雨水による水返しシートの跳ね上がりを抑制することができ、より一層高い防水効果を有する防水構造を形成することができる。 According to this aspect, the portion of the water return sheet that is in contact with the outer wall surface is blown by pressing against the outer wall surface material with the tip of the parting material that is constructed after the outer wall surface material is built. It is possible to suppress the splashing of the water return sheet due to the coming rainwater, and it is possible to form a waterproof structure having an even higher waterproof effect.

また、本発明による外壁見切り部の防水構造の形成方法の他の態様は、屋根に通じる吊木を施工する吊木施工工程をさらに有し、
前記吊木施工工程において、前記吊木にて前記水返しシートを前記外壁面材に押圧することを特徴とする。
Further, another aspect of the method for forming the waterproof structure of the outer wall parting portion according to the present invention further includes a hanging tree construction step of constructing a hanging tree leading to the roof.
The hanging tree construction step is characterized in that the water return sheet is pressed against the outer wall surface material by the hanging tree.

本態様によれば、外壁面に接触している箇所を、外壁面材の建込後に施工される屋根に通じる吊木で外壁面材に押圧することにより、吹き込んでくる雨水による水返しシートの跳ね上がりを抑制することができ、より一層高い防水効果を有する防水構造を形成することができる。 According to this aspect, the part in contact with the outer wall surface is pressed against the outer wall surface material by a hanging tree leading to the roof, which is constructed after the outer wall surface material is built, so that the water return sheet by the rainwater blown in can be used. It is possible to suppress jumping up and form a waterproof structure having an even higher waterproof effect.

以上の説明から理解できるように、本発明の外壁見切り部の防水構造とその形成方法によれば、外壁見切り部が、所謂、外壁面材勝ちの納まりにおいても、外壁見切り部において高い防水性を得ることができる。 As can be understood from the above description, according to the waterproof structure of the outer wall parting portion and the method for forming the outer wall parting portion of the present invention, the outer wall parting portion has high waterproofness in the outer wall parting portion even when the so-called outer wall material wins. Obtainable.

水返しシートの一例を、接着シートを介して外壁面材に取り付ける手順図として示す図である。It is a figure which shows an example of a water return sheet as a procedure figure which attaches to an outer wall material via an adhesive sheet. 接着シートの幅に関する実施形態を示す縦断面図である。It is a vertical cross-sectional view which shows embodiment about the width of the adhesive sheet. 第1の実施形態に係る外壁見切り部の防水構造の一例を示す縦断面図である。It is a vertical cross-sectional view which shows an example of the waterproof structure of the outer wall parting part which concerns on 1st Embodiment. 第2の実施形態に係る外壁見切り部の防水構造の一例を示す縦断面図である。It is a vertical cross-sectional view which shows an example of the waterproof structure of the outer wall parting part which concerns on 2nd Embodiment. 第3の実施形態に係る外壁見切り部の防水構造の一例を示す縦断面図である。It is a vertical cross-sectional view which shows an example of the waterproof structure of the outer wall parting part which concerns on 3rd Embodiment. 第4の実施形態に係る外壁見切り部の防水構造の一例を示す縦断面図である。It is a vertical cross-sectional view which shows an example of the waterproof structure of the outer wall parting part which concerns on 4th Embodiment. 第5の実施形態に係る外壁見切り部の防水構造の一例を示す縦断面図である。It is a vertical cross-sectional view which shows an example of the waterproof structure of the outer wall parting part which concerns on 5th Embodiment.

以下、本発明の各実施形態に係る外壁見切り部の防水構造について添付の図面を参照しながら説明する。なお、本明細書及び図面において、実質的に同一の構成要素については、同一の符号を付することにより重複した説明を省く。 Hereinafter, the waterproof structure of the outer wall parting portion according to each embodiment of the present invention will be described with reference to the accompanying drawings. In the present specification and the drawings, substantially the same components are designated by the same reference numerals to omit duplicate explanations.

[水返しシートの一例、及び水返しシートを外壁面材へ取り付けて現場にて建て込むまでの手順について]
はじめに、図1を参照して、水返しシートの一例を説明するとともに、水返しシートを外壁面材へ取り付けて現場にて建て込むまでの手順について説明する。ここで、図1は、水返しシートの一例を、接着シートを介して外壁面材に取り付ける手順図として示す図である。図1(a)に示すように、取付けられる外壁面材の長さに応じた長さuの折り返し前の水返しシート10'(二点鎖線図)をX方向に折り曲げ加工し、水返しシート10を製作する。この水返しシート10は、金属板、樹脂板等、その素材は多様であるが、変形性と伸縮性を有する樹脂板から製作されることが好ましく、ポリプロピレン(PP)やポリエチレン(PE)、ポリスチレン(PS)、ポリ塩化ビニル(PVC)、ポリエステル、ポリアミドなどの熱可塑性樹脂板などを挙げることができる。
[Example of water return sheet and procedure for attaching the water return sheet to the outer wall material and building it on site]
First, an example of the water return sheet will be described with reference to FIG. 1, and the procedure for attaching the water return sheet to the outer wall material and building it at the site will be described. Here, FIG. 1 is a diagram showing an example of a water return sheet as a procedure diagram for attaching to an outer wall material via an adhesive sheet. As shown in FIG. 1A, the water return sheet 10'(two-dot chain diagram) before folding back, which has a length u corresponding to the length of the outer wall material to be attached, is bent in the X direction to form a water return sheet. Make 10. The water return sheet 10 is made of various materials such as a metal plate and a resin plate, but is preferably made of a resin plate having deformability and elasticity, and is preferably made of polypropylene (PP), polyethylene (PE), or polystyrene. Examples thereof include thermoplastic resin plates such as (PS), polyvinyl chloride (PVC), polyester, and polyamide.

変形性と伸縮性を有する水返しシート10を適用することにより、外壁面材の建込後に施工が行われる後施工部材と水返しシート10が干渉した際に、この後施工部材への損傷を抑制しながら、水返しシート10が折れ曲がる等の変形やシートの厚み方向に収縮する等の伸縮によって、後施工部材の施工を可能にできる。 By applying the water return sheet 10 having deformability and elasticity, when the post-construction member to be constructed after the outer wall material is built and the water return sheet 10 interfere with each other, the post-construction member is damaged. While suppressing the water return sheet 10, the post-construction member can be constructed by deformation such as bending of the water return sheet 10 or expansion and contraction such as contraction in the thickness direction of the sheet.

図1(b)に示すように、建物の外壁を構成する外壁面材1Aのうち、軒やケラバ等の屋根側の最上部に位置する外壁面材1Aに対し、その上端から外壁面に亘って折り曲げられた水平部11と垂直部12を有する水返しシート10を配設し、接着シート20を介して外壁面材1Aの上端に水返しシート10の水平部11の下面を接着する。このように、外壁面材1Aの上端において、接着シート20を介して外壁面材1Aの上端から外壁面に亘って水返しシート10が配設され、固定されることにより、外壁見切り部の防水構造100が形成される。ここで、「外壁見切り部の防水構造」とは、所謂、外壁面材勝ちの納まりにおける、軒やケラバ、バルコニーの腰壁上部の笠木近傍の見切り部における防水構造のことである。 As shown in FIG. 1 (b), among the outer wall material 1A constituting the outer wall of the building, the outer wall material 1A located at the uppermost part of the roof side such as an eaves or a keraba extends from the upper end to the outer wall surface. A water return sheet 10 having a horizontally bent portion 11 and a vertical portion 12 is arranged, and the lower surface of the horizontal portion 11 of the water return sheet 10 is adhered to the upper end of the outer wall surface material 1A via the adhesive sheet 20. In this way, at the upper end of the outer wall surface material 1A, the water return sheet 10 is arranged and fixed from the upper end of the outer wall surface material 1A to the outer wall surface via the adhesive sheet 20, thereby waterproofing the outer wall parting portion. The structure 100 is formed. Here, the "waterproof structure of the outer wall parting portion" is a so-called waterproof structure in the parting portion near the cap tree on the upper part of the waist wall of the eaves, keraba, and balcony in the case where the outer wall material wins.

なお、外壁面材1Aはサイディング材から形成されている。このサイディング材としては、窯業系サイディング、アルミや鋼板からなる金属系サイディング、天然木を加工してなる木質系サイディング、塩化ビニル樹脂等からなる樹脂系サイディングなどが挙げられる。そして、この外壁面材1Aは、その表面(外壁面)に様々な凹凸からなる柄模様を有しており、図示例は、多数の垂直凹部1aと水平凹部1bにより、正面視矩形状の凸部が上下左右に連続して形成される柄模様を示している。各凹部1a,1bともに、深さが9mm程度のものや、さらに深掘りの12mm程度の深さのものがある。このように外壁面材1Aの外壁面に様々な柄模様が形成されていても、外壁面材1Aの平坦な上端において水返しシート10が固定されることから、水返しシート10の外壁面材1Aへの取付け性や取付け部の強度が外壁面材1Aの柄模様に左右されることはない。 The outer wall surface material 1A is made of a siding material. Examples of this siding material include ceramic siding, metal siding made of aluminum or steel plate, wood siding made by processing natural wood, and resin siding made of vinyl chloride resin or the like. The outer wall surface material 1A has a pattern pattern composed of various irregularities on its surface (outer wall surface). It shows a pattern in which the portions are continuously formed up, down, left and right. Each of the recesses 1a and 1b has a depth of about 9 mm and a deep digging of about 12 mm. Even if various patterns are formed on the outer wall surface of the outer wall surface material 1A in this way, since the water return sheet 10 is fixed at the flat upper end of the outer wall surface material 1A, the outer wall material of the water return sheet 10 The mountability to 1A and the strength of the mounting portion are not affected by the pattern of the outer wall material 1A.

この外壁見切り部の防水構造100の形成は、外壁面材1Aを出荷する工場や、外壁面材1Aを製作する工場等、少なくとも現場搬送前のいずれかの工場にて予め行われる。従って、図1(b)に示すように、上端に水返しシート10が接着固定された状態の外壁面材1Aが現場に搬送され、現場にて外壁面材1Aが建て込まれるのと同時に、外壁面材1Aの上端には水返しシート10が取り付けられ、外壁見切り部の防水構造100が同時に形成されることになる。そのため、現場にて水返しシート10を取付ける施工手間が省略されるとともに、作業員による取付け技量に左右されることなく、水返しシート10の取付け精度の高い外壁見切り部の防水構造100が提供できる。 The waterproof structure 100 of the outer wall parting portion is formed in advance at at least one factory before on-site transportation, such as a factory that ships the outer wall material 1A or a factory that manufactures the outer wall material 1A. Therefore, as shown in FIG. 1B, the outer wall material 1A in a state where the water return sheet 10 is adhesively fixed to the upper end is transported to the site, and at the same time when the outer wall material 1A is built at the site, at the same time. A water return sheet 10 is attached to the upper end of the outer wall surface material 1A, and a waterproof structure 100 of the outer wall parting portion is formed at the same time. Therefore, the construction work of installing the water return sheet 10 at the site can be omitted, and the waterproof structure 100 of the outer wall parting portion with high installation accuracy of the water return sheet 10 can be provided without being influenced by the installation skill by the worker. ..

接着シート20としては、例えば、防水性の高い両面接着用のブチルテープなどを挙げることができる。なお、本発明の各実施形態に係る外壁見切り部の防水構造では、水返しシート10が外壁面材1Aの上端において接着固定されて形成されることを必須とするものではないが、接着固定による固定形態が好ましい。接着シート20を用いて外壁面材1Aの上端に水返しシート10を接着することにより、例えば、ボルト等で水返しシート10を固定する場合にボルトが水返しシート10の上方に突出し、後施工部材の施工時に突出するボルトと干渉するといった施工時の問題は生じない。また、例えば水返しシート10を外壁面材1Aの室内側の通気層へも折り曲げ、この通気層にクリップ等を差し込んで水返しシート10の固定を行う場合のように、現場による作業が余儀なくされることもなくなる。 Examples of the adhesive sheet 20 include butyl tape for double-sided adhesion having high waterproofness. In the waterproof structure of the outer wall parting portion according to each embodiment of the present invention, it is not essential that the water return sheet 10 is formed by being adhesively fixed at the upper end of the outer wall material 1A, but by adhesive fixing. A fixed form is preferred. By adhering the water return sheet 10 to the upper end of the outer wall surface material 1A using the adhesive sheet 20, for example, when fixing the water return sheet 10 with a bolt or the like, the bolt protrudes above the water return sheet 10 and is post-constructed. There are no problems during construction such as interference with bolts that protrude during construction of members. Further, for example, when the water return sheet 10 is bent into the ventilation layer on the indoor side of the outer wall material 1A and a clip or the like is inserted into the ventilation layer to fix the water return sheet 10, work on site is unavoidable. It will never happen.

次に、図2を参照して、接着シートの幅に関する実施形態について説明する。図2には、外壁面材1Aの厚みに対して二種類の幅の接着シートを示している。まず、図2(a)に示す実施形態は、外壁面材1Aの厚みt0に対し、その半分程度の幅t1を有する接着シート20を示している。なお、幅t1は厚みt0の半分よりも狭幅であってもよく、水返しシート10と外壁面材1Aの間において所望の接着性が確保できれば幅t1は様々に設定できる。 Next, an embodiment regarding the width of the adhesive sheet will be described with reference to FIG. FIG. 2 shows two types of adhesive sheets having different widths with respect to the thickness of the outer wall surface material 1A. First, the embodiment shown in FIG. 2A shows the adhesive sheet 20 having a width t1 that is about half of the thickness t0 of the outer wall surface material 1A. The width t1 may be narrower than half of the thickness t0, and the width t1 can be set in various ways as long as the desired adhesiveness can be secured between the water return sheet 10 and the outer wall surface material 1A.

建物に適用される外壁面材1Aの厚みt0は、例えば12mm乃至25mmと様々な厚みのものが存在し、凹部1bの深さも様々存在するが、例えば、全ての厚みの外壁面材1Aに適用可能な幅の接着シート20を用意することにより、その汎用性が高くなる。例えば、外壁面材1Aの厚みt2が12mm乃至25mmの場合において、接着シート20の幅t1を7mm乃至12mm程度に設定しておくことにより、接着シート20の汎用性を高めることができる。 The thickness t0 of the outer wall material 1A applied to the building has various thicknesses such as 12 mm to 25 mm, and the depth of the recess 1b also varies. For example, it is applied to the outer wall material 1A of all thicknesses. By preparing the adhesive sheet 20 having a possible width, its versatility is increased. For example, when the thickness t2 of the outer wall surface material 1A is 12 mm to 25 mm, the versatility of the adhesive sheet 20 can be enhanced by setting the width t1 of the adhesive sheet 20 to about 7 mm to 12 mm.

また、図2(a)に示すように、接着シート20は、外壁面材1Aの上端において、室内側の端辺に沿うようにして接着される。後述するように、外壁面材1Aの上方(もしくは斜め上方)には、軒桁や屋根部材等、様々な構造躯体が存在する。水返しシート10の垂直片12と外壁面材1Aの外壁面の間に雨水がY方向に仮に吹き込んできた場合でも、接着シート20による接着部位が外壁面から離れていることにより、勢いが可及的に減殺された雨水が接着シート20に到達することとなり、雨水が接着シート20を介して室内側へ浸み込むことを抑制することができる。 Further, as shown in FIG. 2A, the adhesive sheet 20 is adhered at the upper end of the outer wall surface material 1A along the end edge on the indoor side. As will be described later, various structural skeletons such as eaves girders and roof members are present above (or diagonally above) the outer wall surface material 1A. Even if rainwater is temporarily blown in the Y direction between the vertical piece 12 of the water return sheet 10 and the outer wall surface of the outer wall surface material 1A, the adhesive portion by the adhesive sheet 20 is separated from the outer wall surface, so that momentum is possible. The rainwater that has been diminished reaches the adhesive sheet 20, and it is possible to prevent the rainwater from seeping into the room through the adhesive sheet 20.

一方、図2(b)に示す接着シート20Aは、その幅t2が外壁面材1Aの厚みt0と同程度の形態である。使用される外壁面材1Aの厚みt0に応じた接着シート20Aを用意する必要があり、多様な厚みの外壁面材1Aに対する汎用性はないものの、接着シート20Aによる接着面積が広くなることから、外壁面材1Aの上端からの水返しシート10の剥がれ防止効果が高まる。 On the other hand, the adhesive sheet 20A shown in FIG. 2B has a width t2 similar to that of the outer wall surface material 1A thickness t0. It is necessary to prepare an adhesive sheet 20A according to the thickness t0 of the outer wall material 1A to be used, and although it is not versatile for the outer wall material 1A having various thicknesses, the adhesive area by the adhesive sheet 20A is widened. The effect of preventing the water return sheet 10 from peeling off from the upper end of the outer wall surface material 1A is enhanced.

本発明の各実施形態に係る外壁見切り部の防水構造は、図1(b)に示す防水構造を基本構成としながら、この防水構造が適用される建物部位や屋根種等により、多様な形態の防水構造を提供することができる。以下、図2(a)に示す形態の接着シート20を適用した、各種実施形態に係る外壁見切り部の防水構造について詳説する。 The waterproof structure of the outer wall parting portion according to each embodiment of the present invention is based on the waterproof structure shown in FIG. 1 (b), and has various forms depending on the building part, roof type, etc. to which this waterproof structure is applied. A waterproof structure can be provided. Hereinafter, the waterproof structure of the outer wall parting portion according to various embodiments to which the adhesive sheet 20 of the form shown in FIG. 2A is applied will be described in detail.

[第1の実施形態に係る外壁見切り部の防水構造]
次に、第1の実施形態に係る外壁見切り部の防水構造の一例を、図3を参照して説明する。図3は、第1の実施形態に係る外壁見切り部の防水構造を示す縦断面図である。図3に示す防水構造100Aは、建物の軒天のうち、勾配軒の軒元における外壁見切り部の防水構造である。
[Waterproof structure of the outer wall parting portion according to the first embodiment]
Next, an example of the waterproof structure of the outer wall parting portion according to the first embodiment will be described with reference to FIG. FIG. 3 is a vertical cross-sectional view showing a waterproof structure of the outer wall parting portion according to the first embodiment. The waterproof structure 100A shown in FIG. 3 is a waterproof structure of the outer wall parting portion at the eaves of the sloped eaves in the eaves of the building.

まず、外壁1は、外壁面材1Aと、通気層1Cを介して室内側に配設された外張り断熱材(外壁下地材)1Bと、を有する。なお、この通気層1Cには、所定の間隔を置いて不図示の複数の縦胴縁が配設されており、この縦胴縁を介して外壁面材1Aと外張り断熱材1Bが固定されている。外壁面材1Aは、既述するように例えば窯業系のサイディングボードである。外張り断熱材1Bは、グラスウールを断熱性能が最も高くなる密度にて圧縮したボードであり、その表面に透湿防水シート1dが貼り付けられている。外張り断熱材1Bの室内側の上端には軒桁4を支持する横胴縁2があり、横胴縁2の下方にはグラスウールやロックウール等を素材とする断熱材3が配設されている。このように、図示例の外壁1は、外張り断熱材1Bと断熱材3とを有する二重断熱構造となっているが、このような二重断熱構造に限らず、外張り断熱材1Bに代わって、表面に透湿防水シート1dが貼り付けられている一般的な下地材(下地ボード)を外装材1の構成要素としてもよい。また、図示を省略するが、断熱材3の室内側の面には防湿シートが配設され、さらにその室内側に石膏ボード等の内装材が配設される。 First, the outer wall 1 has an outer wall surface material 1A and an outer heat insulating material (outer wall base material) 1B arranged on the indoor side via a ventilation layer 1C. A plurality of vertical furring strips (not shown) are arranged on the ventilation layer 1C at predetermined intervals, and the outer wall surface material 1A and the outer heat insulating material 1B are fixed via the vertical furring strips. ing. As described above, the outer wall material 1A is, for example, a ceramic siding board. The outer heat insulating material 1B is a board obtained by compressing glass wool at a density that maximizes the heat insulating performance, and a moisture permeable waterproof sheet 1d is attached to the surface thereof. At the upper end of the outer heat insulating material 1B on the indoor side, there is a horizontal furring strip 2 that supports the eaves girder 4, and below the horizontal furring strip 2, a heat insulating material 3 made of glass wool, rock wool, or the like is arranged. There is. As described above, the outer wall 1 of the illustrated example has a double heat insulating structure having the outer heat insulating material 1B and the heat insulating material 3, but the outer wall 1 is not limited to such a double heat insulating structure, and the outer heat insulating material 1B can be used. Instead, a general base material (base board) on which the moisture-permeable waterproof sheet 1d is attached to the surface may be used as a component of the exterior material 1. Further, although not shown, a moisture-proof sheet is arranged on the indoor side surface of the heat insulating material 3, and an interior material such as gypsum board is further arranged on the indoor side thereof.

外壁1の上方には、所定勾配を有する屋根7が配設されている。屋根7は、屋外側から、屋根葺き材74、アスファルト等のルーフィング(防水層)、野地板72、垂木71を有し、垂木71には野縁61や縦野縁62が取り付けられ、野縁61には傾斜した軒天材63が取り付けられている。また、図示を省略するが、縦野縁62の軒先には、下地材を介して鼻隠し材が取り付けられている。 A roof 7 having a predetermined slope is arranged above the outer wall 1. The roof 7 has a roofing material 74, a roofing (waterproof layer) such as asphalt, a field board 72, and a rafter 71 from the outdoor side, and a field edge 61 and a vertical field edge 62 are attached to the rafter 71, and the field edge is attached. An inclined eaves roofing material 63 is attached to 61. Further, although not shown, a nose hiding material is attached to the eaves of the vertical field edge 62 via a base material.

軒天材63のうち、外壁面材1A側の端部には金属製の見切り材5が取り付けられている。この見切り材5は、外壁1の幅方向(図3の紙面に直交する方向)に延びており、見切り材5における外壁面材1A側の側面からは断面形状が屈曲した見切り部5aが張り出している。そして、水返しシート10の垂直片12の下方表面が見切り部5aにて外壁面材1A側にZ1方向に押圧され、外壁見切り部の防水構造100Aが形成されている。 A metal parting material 5 is attached to the end of the eaves roof material 63 on the outer wall surface material 1A side. The parting material 5 extends in the width direction of the outer wall 1 (direction orthogonal to the paper surface of FIG. 3), and the parting portion 5a having a bent cross-sectional shape projects from the side surface of the parting material 5 on the outer wall surface material 1A side. There is. Then, the lower surface of the vertical piece 12 of the water return sheet 10 is pressed by the parting portion 5a toward the outer wall surface material 1A in the Z1 direction, and the waterproof structure 100A of the outer wall parting portion is formed.

勾配軒であって、外壁面材勝ちの納まりにおける軒元では、図3に示すように、外壁面材1Aの上端から水返しシート10の垂直片12の下端までの距離s1が短い(例えば、s1が15mm以下程度)。そのため、垂直片12と外壁面材1Aの間にY方向で吹き込んでくる雨水の吹き込み口と、屋根7等の構造躯体との距離が比較的短い。そこで、このような勾配軒であって外壁面材勝ちの納まりにおける軒元においては、水返しシート10の垂直片12を見切り部5aによって外壁面材1Aに対してZ1方向に押し付けて固定することにより、高い防水性を有する防水構造100Aを形成することができる。 In a sloped eave, the distance s1 from the upper end of the outer wall material 1A to the lower end of the vertical piece 12 of the water return sheet 10 is short (for example, as shown in FIG. 3) at the eaves where the outer wall material wins. s1 is about 15 mm or less). Therefore, the distance between the rainwater outlet that blows in the Y direction between the vertical piece 12 and the outer wall surface material 1A and the structural frame such as the roof 7 is relatively short. Therefore, in such a sloped eave, at the eaves where the outer wall material wins, the vertical piece 12 of the water return sheet 10 is pressed against the outer wall material 1A by the parting portion 5a to be fixed in the Z1 direction. Therefore, a waterproof structure 100A having high waterproofness can be formed.

[第2の実施形態に係る外壁見切り部の防水構造]
次に、第2の実施形態に係る外壁見切り部の防水構造の一例を、図4を参照して説明する。図4は、第2の実施形態に係る外壁見切り部の防水構造を示す縦断面図である。図4に示す防水構造100は、建物の軒天のうち、水平軒の軒元における外壁見切り部の防水構造である。
[Waterproof structure of the outer wall parting portion according to the second embodiment]
Next, an example of the waterproof structure of the outer wall parting portion according to the second embodiment will be described with reference to FIG. FIG. 4 is a vertical cross-sectional view showing a waterproof structure of the outer wall parting portion according to the second embodiment. The waterproof structure 100 shown in FIG. 4 is a waterproof structure of the outer wall parting portion at the eaves of the horizontal eaves in the eaves of the building.

図4に示すように、水平軒では、野縁61、縦野縁62及び軒天材63が水平に配設され、不図示の軒先において、下地材及び鼻隠し材を介して垂木71に取り付けられている。また、垂木71から垂下される不図示の吊木にて野縁61が固定されていてもよい。水平軒では、軒天材63が水平に配設されることにより、軒天材63に取り付けられている見切り材5から延びる見切り部5aと外壁面材1Aの当接位置から当該外壁面材1Aの上端までの距離s2は、比較的長くなる。なお、金属製の見切り部5aが外壁面材1Aの直接接触して外壁面材1Aの表面を傷付けないように、見切り部5aと外壁面材1Aの間には、外壁面材1Aの幅方向に沿う例えば乾式の緩衝材8が配設されている。ここで、緩衝材8は、乾式の止水材ともなり得るEPDM系ゴム(エチレンプロピレンゴム)やポリエチレンゴム等から製作することができる。 As shown in FIG. 4, in the horizontal eaves, the field edge 61, the vertical field edge 62, and the eaves top material 63 are arranged horizontally, and are attached to the rafter 71 via the base material and the nose hiding material at the eaves not shown. Has been done. Further, the field edge 61 may be fixed by a rafter (not shown) hanging from the rafter 71. In the horizontal eaves, the eaves ceiling material 63 is arranged horizontally, so that the outer wall surface material 1A is from the contact position between the parting portion 5a extending from the parting material 5 attached to the eaves roof material 63 and the outer wall surface material 1A. The distance s2 to the upper end of is relatively long. The width direction of the outer wall surface material 1A is between the parting portion 5a and the outer wall surface material 1A so that the metal parting portion 5a does not come into direct contact with the outer wall surface material 1A and damage the surface of the outer wall surface material 1A. For example, a dry cushioning material 8 is arranged along the above. Here, the cushioning material 8 can be manufactured from EPDM rubber (ethylene propylene rubber), polyethylene rubber, or the like, which can also be a dry water blocking material.

水平軒の場合、垂直片12と外壁面材1Aの間にY方向に吹き込んでくる雨水の吹き込み口と、屋根7等の構造躯体との距離が比較的長くなる。そのため、吹き込んできた雨水は上昇過程で勢いが減殺され易く、従って、例えば図3に示す防水構造100Aのように水返しシート10の垂直片12を外壁面材1Aに押し付けて固定することにより、防水性を高める必要性は必ずしもない。そのため、水平軒であって外壁面材勝ちの納まりにおける軒元の防水構造には、垂直片12を何等押さえることのない、図1(b)に示す防水構造100が適用できる。なお、既述する勾配軒であっても、要求される防水性に応じて、図3に示すように見切り部5aで水返しシート10の端部を押し付けることなく、図1(b)に示す防水構造100を適用してもよい。 In the case of a horizontal eave, the distance between the rainwater outlet that blows in the Y direction between the vertical piece 12 and the outer wall surface material 1A and the structural frame such as the roof 7 is relatively long. Therefore, the momentum of the blown rainwater is likely to be diminished in the ascending process. Therefore, for example, as in the waterproof structure 100A shown in FIG. 3, the vertical piece 12 of the water return sheet 10 is pressed against the outer wall surface material 1A to fix it. There is no need to improve waterproofness. Therefore, the waterproof structure 100 shown in FIG. 1B, which is a horizontal eave and does not hold down the vertical piece 12 at all, can be applied to the waterproof structure of the eaves where the outer wall material wins. Even in the case of the sloped eaves described above, as shown in FIG. 3, the end portion of the water return sheet 10 is not pressed by the parting portion 5a as shown in FIG. 3, depending on the required waterproofness, as shown in FIG. 1 (b). The waterproof structure 100 may be applied.

[第3の実施形態に係る外壁見切り部の防水構造]
次に、第3の実施形態に係る外壁見切り部の防水構造の一例を、図5を参照して説明する。図5は、第3の実施形態に係る外壁見切り部の防水構造を示す縦断面図である。図5に示す防水構造100Bは、建物の軒天のうち、水平軒の軒元における外壁見切り部の防水構造である点は第2の実施形態に係る外壁見切り部の防水構造100と同様である。第2の実施形態の防水構造100との相違点は、水平軒であるものの、垂木71から垂下される吊木64にて水返しシート10の垂直片12を外壁面材1Aに対してZ1方向に押圧している構成を有する点である。
[Waterproof structure of the outer wall parting portion according to the third embodiment]
Next, an example of the waterproof structure of the outer wall parting portion according to the third embodiment will be described with reference to FIG. FIG. 5 is a vertical cross-sectional view showing a waterproof structure of the outer wall parting portion according to the third embodiment. The waterproof structure 100B shown in FIG. 5 is the same as the waterproof structure 100 of the outer wall parting portion according to the second embodiment in that it is a waterproof structure of the outer wall parting portion at the eaves of the horizontal eaves in the eaves of the building. .. The difference from the waterproof structure 100 of the second embodiment is that although it is a horizontal eave, the vertical piece 12 of the water return sheet 10 is placed in the Z1 direction with respect to the outer wall material 1A by the hanging tree 64 hanging from the rafter 71. It is a point that has a structure that is pressed against.

吊木64は、外壁面材1Aの幅方向に、例えば450mm乃至500mm程度の間隔で垂下される。垂直片12に対し、吊木64の側面から押し込み力が作用することより、この吊木64が配設されている箇所での防水性は高められる。また、間隔を置いて複数の吊木64にて垂直片12が押圧されていることにより、吊木64にて全く押圧されていない場合と比べて、吊木64に直接押圧されていない領域においても垂直片12と外壁面材1Aの密着性は高められ、従って防水構造100Bの防水性は吊木64に対応する位置と対応しない位置の全てにおいて高められる。 The hanging tree 64 is hung in the width direction of the outer wall surface material 1A at intervals of, for example, about 450 mm to 500 mm. Since a pushing force acts on the vertical piece 12 from the side surface of the hanging tree 64, the waterproof property at the place where the hanging tree 64 is arranged is enhanced. Further, since the vertical pieces 12 are pressed by the plurality of hanging trees 64 at intervals, in the region where the vertical pieces 12 are not directly pressed by the hanging trees 64, as compared with the case where the vertical pieces 12 are not pressed at all by the hanging trees 64. However, the adhesion between the vertical piece 12 and the outer wall surface material 1A is enhanced, and therefore the waterproofness of the waterproof structure 100B is enhanced at all positions corresponding to and not corresponding to the hanging tree 64.

[第4の実施形態に係る外壁見切り部の防水構造]
次に、第4の実施形態に係る外壁見切り部の防水構造の一例を、図6を参照して説明する。図6は、第4の実施形態に係る外壁見切り部の防水構造を示す縦断面図である。図6に示す防水構造100Cは、片棟屋根の棟における防水構造である。
[Waterproof structure of the outer wall parting portion according to the fourth embodiment]
Next, an example of the waterproof structure of the outer wall parting portion according to the fourth embodiment will be described with reference to FIG. FIG. 6 is a vertical cross-sectional view showing a waterproof structure of the outer wall parting portion according to the fourth embodiment. The waterproof structure 100C shown in FIG. 6 is a waterproof structure in a ridge with a single roof.

片棟屋根においては、外壁1の上方に大桁4Aの他、破風下地材91が取り付けられ、破風下地材91には化粧破風板92が取り付けられている。また、破風下地材91は、片流れ勾配を有する屋根7を構成する垂木71に取り付けられ、片流れの屋根7から化粧破風板92に跨るように屈曲した被覆板93が乾式防水材や下地材等を介してこれらの部材に取り付けられている。この被覆板93を介して、片棟屋根における屋根換気も行われる。 In the one-building roof, in addition to the large girder 4A, a gable base material 91 is attached above the outer wall 1, and a decorative gable plate 92 is attached to the gable base material 91. Further, the gable base material 91 is attached to the rafters 71 constituting the roof 7 having a one-sided flow gradient, and the covering plate 93 bent so as to straddle the decorative gable board 92 from the one-sided roof 7 provides a dry waterproof material, a base material, or the like. It is attached to these members via. Roof ventilation in the roof of a single building is also performed through the covering plate 93.

外壁面材1Aの上端から外壁面に亘り、接着シート20を介して取付けられている水返しシート10に関し、水平片11は破風下地材91にて下方にZ2方向に押し付けられ、垂直片12は化粧破風板92にて側方にZ1方向に押し付けられている。 Regarding the water return sheet 10 attached via the adhesive sheet 20 from the upper end of the outer wall surface material 1A to the outer wall surface, the horizontal piece 11 is pressed downward by the gable base material 91 in the Z2 direction, and the vertical piece 12 is It is pressed sideways in the Z1 direction by the decorative gable board 92.

片棟屋根では、軒等を有しておらず、棟が風雨に直接晒されることから、漏水の問題が顕著になる。本実施形態に係る防水構造100Cによれば、化粧破風板92と外壁面材1Aの間にY方向に吹き込んできた雨水を、水返しシート10の垂直片12と水平片11の双方が外壁面材1A側に押圧された構成を有していることにより、高い防水性を奏することができ、片棟屋根にて課題となり易い棟での漏水の問題を解消することができる。 The roof of a single ridge does not have eaves, etc., and the ridge is directly exposed to wind and rain, so the problem of water leakage becomes noticeable. According to the waterproof structure 100C according to the present embodiment, both the vertical piece 12 and the horizontal piece 11 of the water return sheet 10 allow rainwater blown in the Y direction between the decorative gable board 92 and the outer wall surface material 1A to the outer wall surface. By having a structure pressed on the material 1A side, high waterproofness can be achieved, and the problem of water leakage in a ridge, which tends to be a problem in a single ridge roof, can be solved.

[第5の実施形態に係る外壁見切り部の防水構造]
次に、第5の実施形態に係る外壁見切り部の防水構造の一例を、図7を参照して説明する。図7は、第5の実施形態に係る外壁見切り部の防水構造を示す縦断面図である。図7に示す防水構造100は、建物のバルコニーの腰壁における、笠木下方の見切り部の防水構造である。腰壁も一般の外壁面材1Aを有しており、笠木95の垂下片の下方の突起部が腰壁の外壁面の途中位置に固定されることより、外壁見切り部の防水構造と言える。
[Waterproof structure of the outer wall parting portion according to the fifth embodiment]
Next, an example of the waterproof structure of the outer wall parting portion according to the fifth embodiment will be described with reference to FIG. 7. FIG. 7 is a vertical cross-sectional view showing a waterproof structure of the outer wall parting portion according to the fifth embodiment. The waterproof structure 100 shown in FIG. 7 is a waterproof structure of the parting portion below the cap tree on the waist wall of the balcony of the building. The waist wall also has a general outer wall surface material 1A, and the protrusion below the hanging piece of the lumber 95 is fixed at an intermediate position of the outer wall surface of the waist wall, so that it can be said to be a waterproof structure of the outer wall parting portion.

腰壁1'は、屋外側の外壁面材1Aとバルコニー側の外壁面材1Aが、通気層1E内にあって不図示の縦胴縁を介してフレーム状の下地材1Dに固定されて構成されている。この下地材Dの上端には笠木取付け板94が取付けられ、この笠木取付け板94に笠木95が取り付けられてバルコニー腰壁が形成される。図7に示すように、笠木95は、断面形状が略コの字状を呈しており、離間している二つの外壁面材1Aの上端に上方から被さるようにして配設されている。笠木95の垂下片の下方内側には突起95aがあり、この突起95aが緩衝材8を介して外壁面材1Aを押圧することにより、笠木95が外壁面材1Aに固定されている。なお、緩衝材8は、笠木95と腰壁を構成する外壁面材1Aの見切り材となる。図7において、突起95aは紙面垂直方向に間欠的に通気孔を有しており、通気孔を介して外気が外壁面材1Aの内側へ導入されるようになっている。 The waist wall 1'has a structure in which the outer wall material 1A on the outdoor side and the outer wall material 1A on the balcony side are inside the ventilation layer 1E and are fixed to the frame-shaped base material 1D via a vertical furring strip (not shown). Has been done. A cap tree mounting plate 94 is attached to the upper end of the base material D, and a cap tree 95 is attached to the cap tree mounting plate 94 to form a balcony waist wall. As shown in FIG. 7, the Kasagi 95 has a substantially U-shaped cross section, and is arranged so as to cover the upper ends of two separated outer wall members 1A from above. There is a protrusion 95a on the lower inside of the hanging piece of the cap tree 95, and the protrusion 95a presses the outer wall surface material 1A via the cushioning material 8 to fix the cap tree 95 to the outer wall surface material 1A. The cushioning material 8 serves as a parting material for the lumber 95 and the outer wall surface material 1A constituting the waist wall. In FIG. 7, the protrusion 95a has vents intermittently in the direction perpendicular to the paper surface, and outside air is introduced into the outer wall surface material 1A through the vents.

外壁面材1Aの上端から外壁面に亘って配設された水返しシート10が接着シート20を介して外壁面材1Aの上端に固定されることにより、防水構造100が形成されている。図示するように、防水構造100により、笠木95の突起95aと外壁面材1Aの間をY方向に吹き込む雨水が外壁面材1Aの内側へ浸入することが抑制される。 The waterproof structure 100 is formed by fixing the water return sheet 10 arranged from the upper end of the outer wall surface material 1A to the upper end of the outer wall surface material 1A via the adhesive sheet 20. As shown in the figure, the waterproof structure 100 prevents rainwater that blows in the Y direction between the protrusion 95a of the lumber 95 and the outer wall material 1A from entering the inside of the outer wall material 1A.

なお、図示を省略するが、軒の出が極めて少ない、所謂軒ゼロと称される軒元における防水構造や、同様に軒の出の少ないケラバにおける防水構造に関しても、図示する各実施形態の防水構造を適宜選択して適用することが可能である。 Although not shown, the waterproof structure at the eaves, which has extremely few eaves, so-called zero eaves, and the waterproof structure at the keraba, which also has few eaves, are also waterproofed according to the illustrated embodiments. The structure can be appropriately selected and applied.

上記実施形態に挙げた構成等に対し、その他の構成要素が組み合わされるなどした他の実施形態であってもよく、また、本発明はここで示した構成に何等限定されるものではない。この点に関しては、本発明の趣旨を逸脱しない範囲で変更することが可能であり、その応用形態に応じて適切に定めることができる。例えば、図示する実施形態では、水返しシートを一箇所で折り曲げて断面形状をL字状に加工した後、接着シートを介して外壁の上端に固定しているが、水返しシートを二箇所で折り曲げて断面形状をコの字状に加工した後、接着シート無しで外壁の上端からコの字状の水返しシートを被せるようにして外壁の上端に嵌め込んで固定する形態であってもよい。また、この形態において、図示例のように水返しシートと外壁の上端の間に接着シートをさらに介在させてもよい。このように、コの字状の水返しシートを外壁の上端に嵌め込む工程も、本発明の外壁見切り部の防水構造の形成方法におけるプレ固定工程となる。 Other embodiments may be obtained in which other components are combined with respect to the configurations listed in the above embodiments, and the present invention is not limited to the configurations shown here. This point can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form thereof. For example, in the illustrated embodiment, the water return sheet is bent at one place to process the cross-sectional shape into an L shape, and then fixed to the upper end of the outer wall via an adhesive sheet, but the water return sheet is fixed at two places. After bending and processing the cross-sectional shape into a U shape, a U-shaped water return sheet may be covered from the upper end of the outer wall without an adhesive sheet and fitted to the upper end of the outer wall to be fixed. .. Further, in this form, an adhesive sheet may be further interposed between the water return sheet and the upper end of the outer wall as shown in the illustrated example. As described above, the step of fitting the U-shaped water return sheet into the upper end of the outer wall is also a pre-fixing step in the method of forming the waterproof structure of the outer wall parting portion of the present invention.

1:外壁、1':腰壁、1A:外壁面材、1a:垂直凹部(凹部)、1b:水平凹部(凹部)、1B:外張り断熱材(外壁下地材)、1d:透湿防水シート、1C:通気層、2:横胴縁(溝形鋼)、3:断熱材、4:軒桁、4A:大桁、5:見切り材、5a:見切り部、61:野縁、62:縦野縁、63:軒天材、7:屋根、71:垂木、72:野地板、73:ルーフィング、74:屋根葺き材、8:緩衝材、91:破風下地材、92:化粧破風板、93:被覆板、94:笠木取付け板、95:笠木、10:水返しシート、10':折り曲げ前の水返しシート(水返しシート)、11:水平片、12:垂直片、20,20A:接着シート、100,100A,100B,100C:外壁見切り部の防水構造(防水構造) 1: Outer wall, 1': Waist wall, 1A: Outer wall material, 1a: Vertical recess (recess), 1b: Horizontal recess (recess), 1B: Outer insulation material (outer wall base material), 1d: Moisture permeable waterproof sheet , 1C: Ventilation layer, 2: Horizontal furring strip (grooved steel), 3: Insulation material, 4: Eaves girder, 4A: Large girder, 5: Parting material, 5a: Parting part, 61: Field edge, 62: Vertical Field edge, 63: Eaves roof material, 7: Roof, 71: Rafter, 72: Field board, 73: Roofing, 74: Roofing material, 8: Buffer material, 91: Windbreak base material, 92: Decorative windbreak board, 93 : Cover plate, 94: Lumber mounting plate, 95: Lumber, 10: Water return sheet, 10': Water return sheet before bending (water return sheet), 11: Horizontal piece, 12: Vertical piece, 20, 20A: Adhesion Sheet, 100, 100A, 100B, 100C: Waterproof structure of the outer wall parting part (waterproof structure)

Claims (6)

建物の外壁面材の途中位置に見切り材の見切り部が位置する、外壁見切り部の防水構造であって、
前記外壁面材の上端から外壁面に亘って折り曲げられ、該上端に固定されている水返しシートを有し、
屋根に通じる吊木にて前記水返しシートが前記外壁面材に押圧されていることを特徴とする、外壁見切り部の防水構造。
It is a waterproof structure of the outer wall parting part, where the parting part of the parting material is located in the middle of the outer wall material of the building.
Bent over the outer wall surface from the upper end of the outer wall member, it has a water flashing sheets are fixed to the upper end,
A waterproof structure of an outer wall parting portion, characterized in that the water return sheet is pressed against the outer wall material by a hanging tree leading to the roof.
前記水返しシートが前記上端に接着剤もしくは接着シートを介して固定されていることを特徴とする、請求項1に記載の外壁見切り部の防水構造。 The waterproof structure for an outer wall parting portion according to claim 1, wherein the water return sheet is fixed to the upper end via an adhesive or an adhesive sheet. 前記水返しシートが、変形性と伸縮性を有する樹脂製シートであることを特徴とする、請求項1又は2に記載の外壁見切り部の防水構造。 The waterproof structure for an outer wall parting portion according to claim 1 or 2, wherein the water return sheet is a resin sheet having deformability and elasticity. 前記外壁面材が、軒、棟もしくはケラバに通じる外壁面材、もしくは、バルコニーの笠木に通じる腰壁材のいずれか一種であることを特徴とする、請求項1乃至のいずれか一項に記載の外壁見切り部の防水構造。 According to any one of claims 1 to 3 , the outer wall material is one of an outer wall material leading to an eaves, a ridge or a keraba, or a waist wall material leading to a balcony cap tree. Waterproof structure of the described outer wall parting part. 建物の外壁面材の途中位置に見切り材の見切り部が位置する、外壁見切り部の防水構造の施工方法であって
工場において、折り曲げられた水返しシートを前記外壁面材の上端から外壁面に亘って配設し、該上端に固定するプレ固定工程と、
前記水返しシートが固定されている前記外壁面材を現場搬送して建て込み、該外壁面材の途中位置に見切り材の見切り部を位置決めする見切り材施工工程と、
屋根に通じる吊木を施工する吊木施工工程と、を有し、
前記吊木施工工程において、前記吊木にて前記水返しシートを前記外壁面材に押圧することを特徴とする、外壁見切り部の防水構造の形成方法。
It is a construction method of the waterproof structure of the outer wall parting part where the parting part of the parting material is located in the middle of the outer wall material of the building. A pre-fixing step of arranging over and fixing to the upper end,
A parting material construction process in which the outer wall material to which the water return sheet is fixed is transported to the site and built, and the parting portion of the parting material is positioned at an intermediate position of the outer wall material.
It has a hanging tree construction process that constructs a hanging tree that leads to the roof.
A method for forming a waterproof structure of an outer wall parting portion, which comprises pressing the water return sheet against the outer wall material with the hanging tree in the hanging tree construction step.
前記プレ固定工程において、前記水返しシートを前記上端に接着剤もしくは接着シートを介して固定することを特徴とする、請求項に記載の外壁見切り部の防水構造の形成方法。 The method for forming a waterproof structure for an outer wall parting portion according to claim 5 , wherein in the pre-fixing step, the water return sheet is fixed to the upper end via an adhesive or an adhesive sheet.
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