JP6691021B2 - Waterproof structure of building opening and its construction method - Google Patents

Waterproof structure of building opening and its construction method Download PDF

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JP6691021B2
JP6691021B2 JP2016164041A JP2016164041A JP6691021B2 JP 6691021 B2 JP6691021 B2 JP 6691021B2 JP 2016164041 A JP2016164041 A JP 2016164041A JP 2016164041 A JP2016164041 A JP 2016164041A JP 6691021 B2 JP6691021 B2 JP 6691021B2
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frame
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waterproof sheet
existing
airtight
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JP2018031186A (en
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慎之介 武岡
慎之介 武岡
幸自 永田
幸自 永田
荒川　哲也
哲也 荒川
光宏 砂原
光宏 砂原
奈穂 岩田
奈穂 岩田
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YKK AP Inc
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Description

本発明は、窓サッシが組み込まれる建物開口部の防水構造及びその施工方法に関する。   The present invention relates to a waterproof structure for a building opening in which a window sash is incorporated and a method for constructing the same.

外壁に設けられた建物開口部に新設の窓枠を組み込んだ場合、外装材と窓枠との間に湿式のシーリング材を充填してシールすることが一般的である。
また、既設枠の内周面に、リフォーム用枠体を設置する場合もあり（例えば特許文献１参照）、この特許文献１のリフォーム用枠体には、パッキン材が取り付けられており、このパッキン材を既設枠に密着させてシールしている。 When a new window frame is incorporated in the building opening provided on the outer wall, it is common to fill and seal a wet sealing material between the exterior material and the window frame.
In some cases, the reforming frame body may be installed on the inner peripheral surface of the existing frame (see, for example, Patent Document 1). A packing material is attached to the reforming frame member of Patent Document 1, and this packing is used. The material is closely attached to the existing frame for sealing.

特許第５３９４２０５号公報Japanese Patent No. 5394205

しかしながら、前記新設またはリフォームのいずれの窓枠においても、シーリング材やパッキン材が破損・劣化した場合などに水密性・気密性が低下するという課題があった。   However, there is a problem that the watertightness and airtightness of the window frame of either the new installation or the reformation deteriorates when the sealing material or the packing material is damaged or deteriorated.

本発明の目的は、施工が容易で、高い水密性・気密性を備える建物開口部の防水構造及びその施工方法を提供することにある。   An object of the present invention is to provide a waterproof structure for a building opening which is easy to construct and has high watertightness and airtightness, and a construction method thereof.

本発明は、建物の外壁に形成されて窓枠が配置される建物開口部の防水構造であって、前記外壁は、外装材と、前記外装材の屋内面側に設けられた防水層とを備え、前記窓枠と前記外装材との間を塞ぐ屋外側シール材と、前記防水層に連続して設けられて前記窓枠に貼り付けられた気密防水シートとを備え、前記窓枠の屋内側端部には、屋内側に突出された取付片が形成され、前記気密防水シートは、前記窓枠の外周側から前記取付片の屋内面に沿って折り曲げられ、さらに前記取付片の内周面に沿って屋外側に折り返されて前記取付片の内周面に貼り付けられていることを特徴とする。 The present invention is a waterproof structure for a building opening formed on an outer wall of a building in which a window frame is arranged, wherein the outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material. An outdoor-side sealing material that closes the space between the window frame and the exterior material, and an airtight waterproof sheet that is continuously provided on the waterproof layer and that is attached to the window frame. A mounting piece that protrudes toward the indoor side is formed at the inner end, and the airtight waterproof sheet is bent from the outer peripheral side of the window frame along the indoor surface of the mounting piece, and further the inner circumference of the mounting piece. along the surface is folded back on the weather side, characterized that you have adhered to the inner peripheral surface of the mounting piece.

本発明によれば、窓枠と外装材との間を塞ぐ屋外側シール材を一次シールとし、防水層および窓枠間を塞ぐ気密防水シートを二次シールとすることができるため、屋外側シール材が破損・劣化した場合でも、防水層および防水層に連続する気密防水シートにより、外装材の屋内面側において窓枠まで連続する防水ラインを維持できる。このため、防水ライの屋内側に水が浸入することを防止でき、一次シールのみが設けられている場合や、防水層と気密防水シートとが連続していない場合に比べて、水密性および気密性を向上できる。
また、防水層に連続して設けられる気密防水シートは、窓枠に両面テープなどで貼り付けることができるので、施工作業が容易である。
さらに、一次シールとなる屋外側シールと、二次シールとなる防水層および防水気密シールとを設けているので、外装材と、防水層や気密防水シート間とを、外気と等圧な空間にでき、圧力差による雨水の浸入を防止でき、水密性および気密性を向上できる。 According to the present invention, the outdoor sealing material that closes the window frame and the exterior material can be the primary seal, and the airtight waterproof sheet that closes the waterproof layer and the window frame can be the secondary seal. Even if the material is damaged or deteriorated, the waterproof layer and the airtight waterproof sheet that is continuous with the waterproof layer can maintain a continuous waterproof line up to the window frame on the indoor surface side of the exterior material. For this reason, it is possible to prevent water from entering the indoor side of the waterproof lie, and compared to the case where only the primary seal is provided or the case where the waterproof layer and the airtight waterproof sheet are not continuous, You can improve the property.
Further, the airtight waterproof sheet that is continuously provided on the waterproof layer can be attached to the window frame with double-sided tape or the like, so that the construction work is easy.
Furthermore, since the outdoor side seal that serves as the primary seal and the waterproof layer and the waterproof airtight seal that serve as the secondary seal are provided, the exterior material and the space between the waterproof layer and the airtight waterproof sheet are in a space that is at a pressure equal to the outside air. It is possible to prevent the intrusion of rainwater due to the pressure difference, and improve the watertightness and airtightness.

本発明によれば、気密防水シートを窓枠の外周面から窓枠の屋内端縁を介して窓枠の内周側に折り返して窓枠内周面に貼り付けているので、気密防水シートを窓枠の屋内側に連続するように貼り付けることができる。
このため、気密防水シートを窓枠に貼り付ける作業は、窓枠の内周面側から、つまり窓枠の開口側から行うことができ、容易に作業することができる。また、気密防水シートが窓枠の内周側に露出するため、窓枠を交換する場合には、気密防水シートの露出部分を切断することで気密防水シートと窓枠とを分離して窓枠を取り外すことができる。さらに、窓枠を取り外した後は、防水層に連続する気密防水シートが残されているので、新たな気密防水シートを連結し、新たな窓枠を配置して窓枠の内周面に貼り付けることで、窓交換時の防水ラインの復旧を容易に行うことができる。 According to the present invention, the airtight waterproof sheet is folded back from the outer peripheral surface of the window frame to the inner peripheral side of the window frame through the indoor edge of the window frame and attached to the inner peripheral surface of the window frame. It can be attached continuously to the indoor side of the window frame.
Therefore, the work of attaching the airtight waterproof sheet to the window frame can be performed from the inner peripheral surface side of the window frame, that is, the opening side of the window frame, and the work can be easily performed. Further, since the airtight waterproof sheet is exposed on the inner peripheral side of the window frame, when exchanging the window frame, the exposed portion of the airtight waterproof sheet is cut to separate the airtight waterproof sheet from the window frame. Can be removed. Furthermore, after removing the window frame, the airtight waterproof sheet that is continuous with the waterproof layer remains, so connect a new airtight waterproof sheet, place a new window frame and attach it to the inner peripheral surface of the window frame. By attaching it, the waterproof line can be easily restored when the window is replaced.

本発明は、建物の外壁に形成されて窓枠が配置される建物開口部の防水構造であって、前記外壁は、外装材と、前記外装材の屋内面側に設けられた防水層とを備え、前記窓枠と前記外装材との間を塞ぐ屋外側シール材と、前記防水層に連続して設けられて前記窓枠に貼り付けられた気密防水シートとを備え、前記建物開口部は、既設枠の内周面で形成され、前記窓枠は、既設枠の内周側に配置された新設枠であり、前記外装材は、既設外壁の屋外側に配置された新設外装材であり、前記既設外壁と前記新設外装材との間には防水シートで構成された防水層が設けられ、前記気密防水シートは、前記防水シートの一部、または、前記防水シートに連続する別体の気密防水シートで構成されていることを特徴とする。 The present invention is a waterproof structure for a building opening formed on an outer wall of a building in which a window frame is arranged, wherein the outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material. An outdoor-side sealing material that closes between the window frame and the exterior material, and an airtight waterproof sheet that is continuously provided on the waterproof layer and attached to the window frame, and the building opening is , The window frame is a new frame disposed on the inner peripheral side of the existing frame, the window frame is a new frame disposed on the inner peripheral side of the existing frame, and the exterior material is a new exterior material disposed on the outdoor side of the existing outer wall. , A waterproof layer made of a waterproof sheet is provided between the existing outer wall and the new exterior material, and the airtight waterproof sheet is a part of the waterproof sheet or a separate body continuous with the waterproof sheet. It is characterized by being composed of an airtight waterproof sheet.

本発明によれば、既設外壁の屋外側に防水シートを配置して防水層を形成し、この防水シートの屋外側に新設外装材を配置し、既設枠の開口内周側に新設枠を配置し、前記防水シートの一部または別体の気密防水シートを新設枠に貼り付けているので、外壁、窓および防水ラインの改装を容易に行うことができる。   According to the present invention, the waterproof sheet is arranged on the outdoor side of the existing outer wall to form the waterproof layer, the new exterior material is arranged on the outdoor side of the waterproof sheet, and the new frame is arranged on the inner peripheral side of the opening of the existing frame. However, since a part of the waterproof sheet or a separate airtight waterproof sheet is attached to the new frame, the outer wall, the window and the waterproof line can be easily refurbished.

本発明の建物開口部の防水構造において、前記気密防水シートは、可撓性を有することが好ましい。   In the waterproof structure for a building opening of the present invention, the airtight waterproof sheet preferably has flexibility.

本発明によれば、気密防水シートを屈曲させて設けることができるので、様々な形状の窓枠に対しても、その形状に合わせて気密防水シートを折り曲げて窓枠に確実に貼り付けることができ、防水層から窓枠までの水密性・気密性を容易に確保できる。   According to the present invention, since the airtight waterproof sheet can be bent and provided, it is possible to bend the airtight waterproof sheet according to its shape and securely attach it to the window frame even for window frames of various shapes. It is possible to easily secure the watertightness and airtightness from the waterproof layer to the window frame.

本発明の建物開口部の防水構造において、前記気密防水シートは、水により膨潤する特性を有することが好ましい。   In the waterproof structure for a building opening of the present invention, it is preferable that the airtight waterproof sheet has a property of swelling with water.

本発明によれば、気密防水シートを介してネジをねじ込むことで形成された穴や、気密防水シートが損傷した場合の損傷部分に、水が浸入した場合でも、気密防水シートが膨潤することにより、水が気密防水シートを超えて窓枠の屋内側に浸入することを抑制でき、より高い防水性能を備えることができる。   According to the present invention, a hole formed by screwing a screw through the airtight waterproof sheet, or a damaged portion when the airtight waterproof sheet is damaged, even when water enters, the airtight waterproof sheet swells by swelling. Thus, it is possible to prevent water from entering the indoor side of the window frame beyond the airtight waterproof sheet, and it is possible to provide higher waterproof performance.

本発明は、建物の外壁に形成されて窓枠が配置される建物開口部の防水構造の施工方法であって、前記外壁を構成する外装材の屋内面側に防水層を設ける工程と、前記建物開口部の周囲において、前記防水層に連続する気密防水シートの屋外側端部を貼り付ける工程と、前記気密防水シートを前記建物開口部の内周面に沿って配置する工程と、前記建物開口部内に前記窓枠を配置する工程と、前記窓枠の屋内側端部に形成された取付片に、前記気密防水シートの屋内側端部を、前記窓枠の外周側から前記取付片の屋内面に沿って折り曲げ、さらに前記取付片の内周面に沿って屋外側に折り返して前記取付片の内周面に貼り付ける工程と、を有することを特徴とする。
本発明によれば、外装材の屋内面側に設けた防水層に連続する気密防水シートを、建物開口部の周囲と、窓枠の屋内側の部位とに貼り付けることで、防水層から窓枠まで防水ラインを容易に構成でき、水密性・気密性を容易に確保できる。また、防水層を設けてから窓枠を配置して気密防水シートを窓枠に貼り付けて、防水層から窓枠までの防水ラインを形成するまでの間に、湿式のシーリング材を用いていないので、現場での施工時間を短くすることができる。 The present invention is a method for constructing a waterproof structure for a building opening, in which a window frame is formed on an outer wall of a building, wherein a step of providing a waterproof layer on the indoor surface side of an exterior material forming the outer wall, Around the building opening, a step of attaching an outdoor side end of the airtight waterproof sheet continuous to the waterproof layer, a step of arranging the airtight waterproof sheet along the inner peripheral surface of the building opening, the building The step of disposing the window frame in the opening, and the mounting piece formed at the indoor side end portion of the window frame, the indoor side end portion of the airtight waterproof sheet, from the outer peripheral side of the window frame of the mounting piece. Bending along the indoor surface, further folding back along the inner peripheral surface of the mounting piece to the outdoor side, and adhering to the inner peripheral surface of the mounting piece .
According to the present invention, by attaching an airtight waterproof sheet that is continuous to the waterproof layer provided on the indoor surface side of the exterior material to the periphery of the building opening and the indoor-side portion of the window frame, the window is cut from the waterproof layer. A waterproof line can be easily configured up to the frame, and watertightness and airtightness can be easily secured. In addition, a wet sealing material is not used until the waterproof layer is provided, the window frame is arranged, the airtight waterproof sheet is attached to the window frame, and the waterproof line from the waterproof layer to the window frame is formed. Therefore, the construction time at the site can be shortened.

本発明は、既設枠の内周面で形成されて新設枠が配置される建物開口部の防水構造の施工方法であって、既設外壁の屋外側に防水シートで構成された防水層を設ける工程と、前記建物開口部の周囲において、前記防水層に連続する気密防水シートの屋外側端部を貼り付ける工程と、前記気密防水シートを前記建物開口部の内周面に沿って配置する工程と、前記建物開口部内に前記新設枠を配置する工程と、前記新設枠の屋内側の部位に、前記気密防水シートの屋内側端部を貼り付ける工程と、前記既設外壁の屋外側に新設外装材を配置する工程と、を有することを特徴とする。  The present invention is a method of constructing a waterproof structure of a building opening in which a new frame is formed by being formed on the inner peripheral surface of an existing frame, wherein a waterproof layer made of a waterproof sheet is provided on the outdoor side of the existing outer wall. And, around the building opening, a step of attaching an outdoor side end of an airtight waterproof sheet continuous to the waterproof layer, and a step of disposing the airtight waterproof sheet along the inner peripheral surface of the building opening. , A step of disposing the new frame in the building opening, a step of attaching an indoor side end of the airtight waterproof sheet to an indoor side portion of the new frame, and a new exterior material on the outdoor side of the existing outer wall. And a step of arranging.
本発明によれば、既設外壁の屋外側に防水シートを配置して防水層を形成し、この防水シートの屋外側に新設外装材を配置し、既設枠の開口内周側に新設枠を配置し、前記防水シートに連続する気密防水シートを新設枠に貼り付けているので、外壁、窓および防水ラインの改装を容易に行うことができる。  According to the present invention, the waterproof sheet is arranged on the outdoor side of the existing outer wall to form the waterproof layer, the new exterior material is arranged on the outdoor side of the waterproof sheet, and the new frame is arranged on the inner peripheral side of the opening of the existing frame. However, since the airtight waterproof sheet continuous with the waterproof sheet is attached to the new frame, the outer wall, the window and the waterproof line can be easily refurbished.

本発明によれば、施工が容易で、高い水密性・気密性を備える建物開口部の防水構造及びその施工方法を提供することができる。   Advantageous Effects of Invention According to the present invention, it is possible to provide a waterproof structure for a building opening which is easy to construct and has high watertightness and airtightness, and a construction method thereof.

本発明の第１実施形態の建物開口部の防水構造を示す縦断面図。The longitudinal section showing the waterproof structure of the building opening of a 1st embodiment of the present invention. 第１実施形態の建物開口部の防水構造を示す横断面図。The cross-sectional view which shows the waterproof structure of the building opening part of 1st Embodiment. 第１実施形態の建物開口部の防水構造の要部を示す斜視図。The perspective view which shows the principal part of the waterproof structure of the building opening part of 1st Embodiment. 本発明の第２実施形態の建物開口部の防水構造を示す縦断面図。The longitudinal cross-sectional view which shows the waterproof structure of the building opening part of 2nd Embodiment of this invention. 本発明の第３実施形態の建物開口部の防水構造を示す縦断面図。The longitudinal cross-sectional view which shows the waterproof structure of the building opening part of 3rd Embodiment of this invention.

［第１実施形態］
以下、本発明の第１実施形態を図面に基づいて説明する。
本実施形態は、図１〜３に示すように、建物の既設外壁１および既設枠２を残し、新設外壁３、新設枠４、新設障子５を新たに取り付けて改装した建物開口部の防水構造である。
なお、以下の説明において、既設枠２および新設枠４を屋内側から見た際に、上下（垂直）となる方向を上下方向、左右となる方向を左右方向、屋内外方向を見込み方向として説明する。また、既設枠２および新設枠４は矩形状に枠組みされており、枠の内周側に面した面を内周面、外周側に面した面を外周面として説明する。
また、既設枠２、新設枠４、新設障子５の枠材や框材、ガラス等の断面図では、図面を見やすくするためにハッチングを省略している。 [First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in FIGS. 1 to 3, the existing outer wall 1 and the existing frame 2 of the building are left, and a new outer wall 3, a new frame 4, and a new shoji 5 are newly attached to renovate the waterproof structure of the building opening. Is.
In the following description, when the existing frame 2 and the new frame 4 are viewed from the indoor side, the vertical (vertical) direction is the vertical direction, the horizontal direction is the horizontal direction, and the indoor / outdoor direction is the prospective direction. To do. Further, the existing frame 2 and the new frame 4 are framed in a rectangular shape, and the surface facing the inner peripheral side of the frame will be described as the inner peripheral surface, and the surface facing the outer peripheral side will be described as the outer peripheral surface.
Further, in the cross-sectional views of the frame members, frame members, glass, etc. of the existing frame 2, the new frame 4, and the new shoji 5, hatching is omitted to make the drawings easy to see.

建物は、既設外壁１や既設枠２を支持する躯体１０を備える。躯体１０は、例えば、適宜間隔で配置された柱や間柱と、柱や間柱間に掛け渡されて窓開口を区画する窓台、まぐさ等を備える。   The building includes a frame 10 that supports the existing outer wall 1 and the existing frame 2. The skeleton body 10 includes, for example, columns and studs arranged at appropriate intervals, and a window pedestal, a lintel, and the like that spans between the columns and studs to define a window opening.

［既設外壁および既設枠］
躯体１０には、既設外壁１と、既設枠２とが固定されている。
既設枠２は、既設上枠２１と、既設下枠２２と、左右の既設縦枠２３、２４とを枠組みして構成されている。各枠２１，２２，２３，２４の断面形状は、既設窓の種類によって異なり、本実施形態の既設枠２は、引違い窓用である。 [Existing outer wall and existing frame]
An existing outer wall 1 and an existing frame 2 are fixed to the body 10.
The existing frame 2 includes an existing upper frame 21, an existing lower frame 22, and left and right existing vertical frames 23 and 24. The cross-sectional shape of each frame 21, 22, 23, 24 differs depending on the type of the existing window, and the existing frame 2 of the present embodiment is for a sliding window.

これらの各枠２１，２２，２３，２４は、躯体の屋外面に当接する釘ヒレ２１Ａ，２２Ａ，２３Ａ，２４Ａを備えており、この釘ヒレ２１Ａ，２２Ａ，２３Ａ，２４Ａから躯体に釘を打ち込むことで、既設枠２は躯体１０に取り付けられている。
既設枠２の屋内側には、既設額縁２６が窓開口の内周面に沿って取り付けられている。既設額縁２６は、躯体１０の屋内側を覆う内装材２７の端面が当接されている。
既設枠２の外周面には、既設外壁１が配置され、既設外壁１の端面と既設枠２とは、シーリング材２８で塞がれて防水処理されている。 Each of these frames 21, 22, 23, 24 is equipped with nail fins 21A, 22A, 23A, 24A that come into contact with the outdoor surface of the skeleton, and nails are driven into the skeleton from these nail fins 21A, 22A, 23A, 24A. Therefore, the existing frame 2 is attached to the body 10.
On the indoor side of the existing frame 2, an existing frame 26 is attached along the inner peripheral surface of the window opening. The end surface of the interior material 27 that covers the indoor side of the frame 10 is in contact with the existing frame 26.
The existing outer wall 1 is arranged on the outer peripheral surface of the existing frame 2, and the end surface of the existing outer wall 1 and the existing frame 2 are covered with a sealing material 28 to be waterproofed.

［新設外壁］
既設外壁１の屋外側には、新設外壁３が改装によって設けられている。新設外壁３は、既設外壁１の屋外側に配置された新設断熱材３１と、新設断熱材３１の屋外側に配置された胴縁（本実施形態では縦胴縁）３２と、胴縁３２の屋外側に配置された新設外装材３０とを備えている。
新設断熱材３１は、ポリスチレン樹脂やフェノール樹脂等を発泡させた断熱材など、外張り断熱工法で用いられる一般的な断熱材である。
新設外装材３０は、窯業系、コンクリート系、ＡＬＣ（軽量気泡コンクリート）系、金属系などの様々な材質で構成される外装材である。 [New exterior wall]
On the outdoor side of the existing outer wall 1, a new outer wall 3 is provided by remodeling. The new outer wall 3 includes a new heat insulating material 31 arranged on the outdoor side of the existing outer wall 1, a furring strip (vertical furring strip 32 in the present embodiment) 32 arranged on the outdoor side of the new heat insulating material 31, and a furring strip 32. It is provided with a new exterior material 30 arranged on the outdoor side.
The new heat insulating material 31 is a general heat insulating material used in the external heat insulating method, such as a heat insulating material obtained by foaming polystyrene resin or phenol resin.
The new exterior material 30 is an exterior material made of various materials such as ceramics, concrete, ALC (lightweight aerated concrete), and metal.

［新設窓］
既設枠２の開口内周面には新設窓が取り付けられている。本実施形態の新設窓は、ＦＩＸ窓と、縦すべり出し窓との連窓である。新設窓は、新設枠４および新設障子５を備える。
新設枠４は、新設上枠４１、新設下枠４２、新設縦枠４３、４４、縦骨（中骨）４５を備えている。
ＦＩＸ窓は、新設上枠４１と、新設下枠４２と、新設縦枠４４と、縦骨４５とを枠組みして構成される窓枠内に、トリプルガラス４７からなる面材を組み込むことで構成される。トリプルガラス４７は、各枠４１、４２、４４、縦骨４５と、これらに取り付けられた押縁４６とで保持されている。 [New window]
A new window is attached to the inner peripheral surface of the opening of the existing frame 2. The new window of this embodiment is a continuous window of a FIX window and a vertical sliding window. The new window includes a new frame 4 and a new shoji 5.
The new installation frame 4 includes a new installation upper frame 41, a new installation lower frame 42, new installation vertical frames 43 and 44, and vertical bones (middle frames) 45.
The FIX window is configured by incorporating a face material made of triple glass 47 into a window frame configured by constructing a new upper frame 41, a new lower frame 42, a new vertical frame 44, and a vertical frame 45. To be done. The triple glass 47 is held by the frames 41, 42, 44, the vertical bones 45, and the ridges 46 attached to these.

縦すべり出し窓は、新設上枠４１と、新設下枠４２と、新設縦枠４３と、縦骨４５とを枠組みして構成される窓枠内に、新設障子５を開閉可能に取り付けることで構成される。
新設障子５は、樹脂製の上框５１、下框５２、左右の縦框５３、５４とを枠組みして構成される新設框と、この新設框内に組み込まれたトリプルガラス５７からなる面材とで構成されている。トリプルガラス５７は、各框５１，５２，５３，５４と、これらに取り付けられた押縁５６とで保持されている。
新設窓は、新設枠４や、新設障子５の框５１，５２，５３，５４が樹脂製（合成樹脂製）であり、面材はトリプルガラス４７，５７で構成されているので、断熱性能の高い窓とされている。なお、本実施形態の各框５１，５２，５３，５４は、同一断面の樹脂製の押出形材で構成され、複数の中空部を備えて断熱性能を向上させている。 The vertical sliding window is configured by mounting the new shoji 5 in an openable and closable manner in a window frame configured by a new upper frame 41, a new lower frame 42, a new vertical frame 43, and a vertical frame 45. To be done.
The new shoji 5 is a surface material composed of a resin upper frame 51, a lower frame 52, left and right vertical frames 53, 54 as a framework, and a triple glass 57 incorporated in the new frame. It consists of and. The triple glass 57 is held by the frames 51, 52, 53, 54 and the ridge 56 attached to these.
In the new window, since the new frame 4 and the frames 51, 52, 53, 54 of the new shoji 5 are made of resin (synthetic resin) and the face material is made of triple glass 47, 57, the heat insulation performance is improved. It is a tall window. Each of the frames 51, 52, 53, 54 of the present embodiment is made of a resin extruded shape member having the same cross section, and is provided with a plurality of hollow portions to improve heat insulation performance.

［新設枠］
新設上枠４１、新設下枠４２、新設縦枠４３、４４は、樹脂製の押出形材で構成されている。したがって、本実施形態では、新設枠４全体が断熱部材（樹脂部材）で構成されている。本実施形態では、各枠４１，４２，４３，４４は、同一断面形状の押出形材であるが、各枠の形状は窓の種類に応じて設定され、必ずしも同一断面形状のものに限らない。
また、各枠４１，４２，４３，４４は、見込み方向に沿って屋外側から屋内側に並んだ第１〜４中空部を備えており、枠自体の断熱性および剛性を向上させている。
第１中空部の屋外端面は、新設外装材３０の屋外面とほぼ同一平面上に配置されている。第２中空部は、第１中空部よりも見付け寸法が大きくされ、第１中空部よりも内周側に突出している。第２中空部の内周面には押縁４６が装着可能な係合溝が形成されている。
第３中空部は、第２中空部と同程度の見付け寸法であり、見込み寸法は既設枠２と同程度の寸法とされている。新設上枠４１、新設下枠４２の第３中空部には、新設障子５を開閉するためのすべり出しアームの固定用の金属プレートが配置されている。
第４中空部は、第３中空部と同程度の見付け寸法である。第４中空部の内周側には、ＦＩＸ窓のトリプルガラス４７の保持片や、新設障子５の戸当り部となる突出部４１Ａ，４２Ａ，４３Ａ，４４Ａが設けられている。
なお、縦骨４５は、各枠４１，４２，４３，４４の第２中空部から第４中空部に対応する３つの中空部（第２〜４中空部）を備えている。縦骨４５の第２中空部には押縁４６の係合溝が形成され、第３中空部には錠受け等の部品が取り付けられる金属プレート（チャンネル材）が配置され、第４中空部には左右方向に突出した２つの突出部４５Ａが形成されている。 [New frame]
The new upper frame 41, the new lower frame 42, and the new vertical frames 43 and 44 are made of resin extruded shape members. Therefore, in the present embodiment, the entire new frame 4 is made of a heat insulating member (resin member). In the present embodiment, each frame 41, 42, 43, 44 is an extruded shape member having the same cross-sectional shape, but the shape of each frame is set according to the type of window and is not necessarily limited to the same cross-sectional shape. .
Further, each of the frames 41, 42, 43, 44 includes first to fourth hollow portions arranged from the outdoor side to the indoor side along the prospective direction to improve the heat insulating property and rigidity of the frame itself.
The outdoor end surface of the first hollow portion is arranged on substantially the same plane as the outdoor surface of the new exterior member 30. The second hollow portion has a found size larger than that of the first hollow portion, and projects toward the inner peripheral side from the first hollow portion. An engagement groove to which the ridge 46 can be attached is formed on the inner peripheral surface of the second hollow portion.
The third hollow portion has a found dimension that is approximately the same as the second hollow portion, and the estimated dimensions are approximately the same as the existing frame 2. In the third hollow portions of the new upper frame 41 and the new lower frame 42, metal plates for fixing the sliding arm for opening and closing the new shoji 5 are arranged.
The fourth hollow portion has a found dimension similar to that of the third hollow portion. On the inner peripheral side of the fourth hollow portion, there are provided a holding piece for the triple glass 47 of the FIX window and projecting portions 41A, 42A, 43A, 44A which serve as a door contact portion of the new shoji 5.
The vertical bone 45 includes three hollow portions (second to fourth hollow portions) corresponding to the second hollow portion to the fourth hollow portion of each of the frames 41, 42, 43, 44. An engaging groove for the ridge 46 is formed in the second hollow portion of the vertical bone 45, a metal plate (channel material) to which parts such as a lock holder are attached is arranged in the third hollow portion, and the fourth hollow portion is provided. Two protruding portions 45A protruding in the left-right direction are formed.

新設上枠４１、新設下枠４２、新設縦枠４３、４４の外周面は、フラットな平面形状とされ、既設枠２の釘ヒレ２１Ａ，２２Ａ，２３Ａ，２４Ａに相当するヒレ部は設けられていない。
各枠４１，４２，４３，４４の屋内側端部には、屋内側に突出された取付片４１１、４２１、４３１、４４１が形成され、取付片４１１，４２１，４３１，４４１は、ネジ１５によって躯体１０に取り付けられている。したがって、ネジ１５は、新設枠４の見込み方向に対して直交する方向（各枠４１，４２，４３，４４の見付け方向）にねじ込まれている。
このように新設枠４は、釘ヒレが無く、ネジ１５を見付け方向にねじ込むことで躯体１０に取り付けられるため、屋内外方向（見込み方向）の位置を調整可能に躯体１０に取り付けることができる。本実施形態では、新設枠４の屋外面（第１中空部の端面）が、新設外装材３０の屋外面に略揃うように、新設枠４の位置が調整されている。 The outer peripheral surfaces of the new upper frame 41, the new lower frame 42, and the new vertical frames 43, 44 are flat and flat, and fin portions corresponding to the nail fins 21A, 22A, 23A, 24A of the existing frame 2 are provided. Absent.
Mounting pieces 411, 421, 431, 441 protruding toward the indoor side are formed on the indoor side end portions of the frames 41, 42, 43, 44, and the mounting pieces 411, 421, 431, 441 are fixed by screws 15. It is attached to the body 10. Therefore, the screw 15 is screwed in the direction orthogonal to the prospective direction of the new frame 4 (the direction in which the frames 41, 42, 43, 44 are found).
In this way, the new frame 4 has no nail fin and is attached to the skeleton 10 by screwing the screw 15 in the finding direction, so that the position in the indoor / outdoor direction (expected direction) can be adjusted and attached to the skeleton 10. In the present embodiment, the position of the new frame 4 is adjusted so that the outdoor surface of the new frame 4 (the end surface of the first hollow portion) is substantially aligned with the outdoor surface of the new exterior material 30.

さらに、新設外装材３０の屋外面から既設枠２の屋内側端縁までの見込み方法の長さ寸法は、新設外装材３０の屋外面から新設枠４の屋内側端縁までの見込み方法の長さ寸法よりも小さくなるように設定されている。このため、新設枠４は、既設枠２の内周面を覆っている。
なお、本実施形態では、新設外装材３０の屋外面は、新設枠４の屋外面と、同じ見込み方向の位置であるため、新設枠４（新設上枠４１、新設下枠４２、新設縦枠４３、４４）の見込み方向の長さ寸法も同じ寸法である。
新設枠４の見込み方向の寸法は、各取付片４１１，４２１，４３１，４４１が既設枠２よりも屋内側に位置するように設定されている。このため、取付片４１１，４２１，４３１，４４１からねじ込まれるネジ１５は、既設枠２よりも屋内側の位置で、既設額縁２６等を介して躯体１０にねじ込まれている。 Furthermore, the length dimension of the estimation method from the outdoor surface of the new exterior material 30 to the indoor side edge of the existing frame 2 is the same as the length of the estimation method from the outdoor surface of the new exterior material 30 to the indoor side edge of the new frame 4. It is set to be smaller than the size. Therefore, the new frame 4 covers the inner peripheral surface of the existing frame 2.
In addition, in this embodiment, since the outdoor surface of the new exterior material 30 is in the same prospective position as the outdoor surface of the new frame 4, the new frame 4 (the new upper frame 41, the new lower frame 42, the new vertical frame). 43, 44) have the same length in the prospective direction.
The dimension of the new frame 4 in the prospective direction is set so that the mounting pieces 411, 421, 431, 441 are located closer to the indoor side than the existing frame 2. For this reason, the screw 15 screwed from the mounting pieces 411, 421, 431, 441 is screwed into the frame 10 via the existing frame 26 or the like at a position closer to the indoor side than the existing frame 2.

新設枠４の屋内側には、図１，２に示すように、木製の新設額縁３６が既設額縁２６に沿って配置されている。新設額縁３６と内装材２７との間には、新設カバー材３８が掛け渡されている。新設カバー材３８は、既設額縁２６が屋内側に露出しないようにカバーしている。   On the indoor side of the new frame 4, as shown in FIGS. 1 and 2, a new wooden frame 36 is arranged along the existing frame 26. A new cover material 38 is laid between the new frame 36 and the interior material 27. The new cover material 38 covers the existing frame 26 so as not to be exposed indoors.

［水切材］
図１，３に示すように、新設上枠４１の外周面（上面）には、アルミ押出形材などで構成された水切材６０が取り付けられている。このため、新設外装材３０、新設断熱材３１、胴縁３２の下端面と、新設上枠４１との間には、水切材６０を配置するためのスペースが確保されている。
水切材６０は、図３に示すように、新設上枠４１にネジやリベット等で固定される固定部６１と、固定部６１から上方に延出された立ち上がり部６２と、立ち上がり部６２の上端から新設上枠４１の屋外側まで延出され、屋外方向に向かうにしたがって下方に傾斜されて下り勾配が設定された傾斜部６３と、傾斜部６３の先端から下方に延出された水切部６４とを備えている。 [Draining material]
As shown in FIGS. 1 and 3, on the outer peripheral surface (upper surface) of the new upper frame 41, a draining member 60 made of an aluminum extruded shape member or the like is attached. Therefore, a space for arranging the draining material 60 is secured between the new exterior member 30, the new heat insulating material 31, the lower end surface of the furring strip 32, and the new upper frame 41.
As shown in FIG. 3, the draining member 60 includes a fixing portion 61 fixed to the new upper frame 41 with screws or rivets, a rising portion 62 extending upward from the fixing portion 61, and an upper end of the rising portion 62. To the outdoor side of the new upper frame 41, the inclined portion 63 is inclined downward as it goes toward the outdoor direction and the downward inclination is set, and the draining portion 64 extended downward from the tip of the inclined portion 63. It has and.

新設上枠４１と水切部６４との間には、乾式シーリング材６５が取り付けられている。
傾斜部６３と新設外装材３０との間には、バックアップ材６６および湿式シーリング材（屋外側シール材）６７が充填されている。バックアップ材６６および湿式シーリング材６７の一部には、水抜き穴を有する水抜き部品６８が配置されている。
さらに、水切材６０の傾斜部６３と、既設上枠２１や新設断熱材３１との間は、後述する水切用防水シート７５が掛け渡されており、新設外装材３０の裏面側（屋内面側）に浸入した水は、水切用防水シート７５から傾斜部６３上に流れ、水抜き部品６８を介して排水される。
なお、水抜き部品６８を設ける代わりに、湿式シーリング材６７およびバックアップ材６６に水抜き穴となる切欠部を設けて排水できるように構成してもよい。 A dry sealing material 65 is attached between the new upper frame 41 and the draining portion 64.
A backup material 66 and a wet sealing material (outdoor sealing material) 67 are filled between the inclined portion 63 and the new exterior material 30. A water draining component 68 having a water draining hole is arranged in a part of the backup material 66 and the wet sealing material 67.
Further, between the inclined portion 63 of the draining material 60 and the existing upper frame 21 or the new heat insulating material 31, a waterproof sheet 75 for draining, which will be described later, is bridged, and the back surface side (indoor surface side) of the new exterior material 30. The water that has entered the above) flows from the draining waterproof sheet 75 onto the inclined portion 63, and is drained through the draining component 68.
Instead of providing the water draining component 68, the wet sealing material 67 and the backup material 66 may be provided with notches serving as water draining holes so that water can be drained.

［新設枠の固定構造］
本実施形態では、新設枠４の高さ寸法を、既設枠２の開口高さ寸法よりも小さく設計し、新設枠４を既設枠２内に容易に配置できるようにしている。このため、新設枠４を既設下枠２２上に設置した際に、新設上枠４１と既設枠２との間には所定の隙間が生じる。そこで、図１，３に示すように、新設上枠４１と、既設枠２との間には、前記隙間寸法に応じた厚さ寸法の調整部材（飼い木）４１５が配置されている。また、既設上枠２１の下面と、既設額縁２６の下面との間には段差があるため、調整部材４１５と既設額縁２６との間にも隙間が生じ、この隙間部分には調整部材４１６が配置されている。 [Fixed structure of new frame]
In this embodiment, the height dimension of the new frame 4 is designed to be smaller than the opening height dimension of the existing frame 2 so that the new frame 4 can be easily arranged in the existing frame 2. Therefore, when the new frame 4 is installed on the existing lower frame 22, a predetermined gap is created between the new upper frame 41 and the existing frame 2. Therefore, as shown in FIGS. 1 and 3, between the new upper frame 41 and the existing frame 2, an adjusting member (housekeeping) 415 having a thickness dimension according to the gap dimension is arranged. Further, since there is a step between the lower surface of the existing upper frame 21 and the lower surface of the existing frame 26, a gap is created between the adjusting member 415 and the existing frame 26, and the adjusting member 416 is provided in this gap portion. It is arranged.

新設下枠４２は、図１に示すように、既設下枠２２と新設断熱材３１との上面に当接するように配置されている。本実施形態の既設下枠２２は、引違い窓用であり、内レールに比べて外レールの位置が低い。このため、既設下枠２２には、新設下枠４２の下面に当接する支持ブラケット２２１が取り付けられている。支持ブラケット２２１は、高さ調整可能なように２つの部品で構成されている。この支持ブラケット２２１は、既設下枠２２の長手方向（既設枠２の左右方向）の全長と同程度の長さ寸法に形成して配置してもよいが、本実施形態では短尺のピース状に形成されて既設下枠２２の複数箇所に取り付けられている。この支持ブラケット２２１が設けられているので、新設下枠４２の荷重を支持でき、新設下枠４２の垂れ下がりも防止できる。
また、既設額縁２６上には、既設下枠２２の上面との段差を無くすための調整部材４２６が配置されている。
新設下枠４２の屋外端部は新設外装材３０の位置まで延設されており、新設下枠４２と新設外装材３０との間には、バックアップ材６６および湿式シーリング材６７が充填されている。 As shown in FIG. 1, the new lower frame 42 is arranged so as to contact the upper surfaces of the existing lower frame 22 and the new heat insulating material 31. The existing lower frame 22 of the present embodiment is for a sliding window, and the position of the outer rail is lower than that of the inner rail. Therefore, the existing lower frame 22 is provided with a support bracket 221 that comes into contact with the lower surface of the new lower frame 42. The support bracket 221 is composed of two parts so that the height can be adjusted. The support bracket 221 may be formed and arranged to have a length dimension similar to the entire length of the existing lower frame 22 in the longitudinal direction (the left-right direction of the existing frame 2), but in the present embodiment, it is a short piece. It is formed and attached to a plurality of locations on the existing lower frame 22. Since the support bracket 221 is provided, it is possible to support the load of the new lower frame 42 and prevent the new lower frame 42 from hanging down.
Further, an adjusting member 426 is arranged on the existing frame 26 to eliminate a step with the upper surface of the existing lower frame 22.
The outdoor end portion of the new lower frame 42 extends to the position of the new outer casing 30, and a backup material 66 and a wet sealing material 67 are filled between the new lower frame 42 and the new outer casing 30. .

新設縦枠４３、４４は、図２に示すように、既設縦枠２３、２４の内周側に配置されている。新設縦枠４３、４４と、既設額縁２６との間にも、板状の調整部材４３５、４４５が配置されている。これにより、新設枠４の左右方向の幅寸法を、既設縦枠２３、２４間の寸法よりも小さくして、調整部材４３５、４４５で調整することで、新設枠４は、幅方向においても既設枠２内に容易に配置できる。
新設縦枠４３、４４の外周面（側面）は、前記調整部材４３５、４４５と、新設断熱材３１とに当接されている。一方、新設外装材３０、胴縁３２は、新設縦枠４３、４４の外周面から離れて配置されている。新設縦枠４３、４４と新設外装材３０との間には、バックアップ材６６および湿式シーリング材６７が充填されている。 As shown in FIG. 2, the new vertical frames 43 and 44 are arranged on the inner peripheral side of the existing vertical frames 23 and 24. Plate-shaped adjusting members 435 and 445 are also arranged between the new vertical frames 43 and 44 and the existing frame 26. As a result, the width dimension of the new frame 4 in the left-right direction is made smaller than the dimension between the existing vertical frames 23 and 24, and is adjusted by the adjusting members 435 and 445. It can be easily arranged in the frame 2.
The outer peripheral surfaces (side surfaces) of the new vertical frames 43 and 44 are in contact with the adjusting members 435 and 445 and the new heat insulating material 31. On the other hand, the new exterior material 30 and the furring strip 32 are arranged apart from the outer peripheral surfaces of the new vertical frames 43 and 44. A backup material 66 and a wet sealing material 67 are filled between the new vertical frames 43 and 44 and the new exterior material 30.

［防水構造］
次に、本実施形態における防水構造について、図１〜３に基づいて説明する。本実施形態では、外壁用の防水シート７１と、既設枠２および新設枠４間を空気が流通しないように封鎖する気密防水シート７２と、水切材６０に水を案内する水切用防水シート７５との３種類の防水シートを設けている。
なお、防水シートとしては、水は通過させないが水蒸気などの湿気は通過させる透湿防水シートと、水・水蒸気・空気を通過させない気密防水シート（防湿気密シートや気密シートともいう）とがあり、前記防水シートに求められる機能によって種類が選択される。本実施形態では、新設外装材３０と、新設断熱材３１との間に、胴縁３２を設けて通気層を形成しており、既設外壁１の湿気（水蒸気）を、新設断熱材３１および通気層を介して外部に逃がすことができるように、防水シート７１は透湿防水シートを用いている。また、気密防水シート７２および水切用防水シート７５は、気密防水シートを用いている。
なお、図１，２では、各防水シート同士を区別しやすいように、防水シート７１を破線で示し、気密防水シート７２および水切用防水シート７５を太い実線で示している。
また、各防水シート７１，７２，７５は、一般的な防水シートと同様に、可撓性を有しており、既設枠２等に沿って折り曲げることができるように構成されている。 [Waterproof structure]
Next, the waterproof structure in this embodiment will be described based on FIGS. In the present embodiment, a waterproof sheet 71 for the outer wall, an airtight waterproof sheet 72 that blocks air from flowing between the existing frame 2 and the new frame 4, and a draining waterproof sheet 75 that guides water to the draining member 60. There are three types of waterproof sheets.
As the waterproof sheet, there are a moisture-permeable waterproof sheet that does not allow water to pass but moisture such as water vapor, and an airtight waterproof sheet that does not allow water, water vapor, or air to pass (also called a moisture-proof and airtight sheet). The type is selected according to the function required of the waterproof sheet. In the present embodiment, a furring strip 32 is provided between the new exterior material 30 and the new heat insulating material 31 to form a ventilation layer, and moisture (water vapor) on the existing outer wall 1 is absorbed by the new heat insulating material 31 and the ventilation. A moisture-permeable waterproof sheet is used as the waterproof sheet 71 so that it can escape to the outside through the layers. Further, the airtight waterproof sheet 72 and the draining waterproof sheet 75 are airtight waterproof sheets.
In FIGS. 1 and 2, the waterproof sheet 71 is shown by a broken line, and the airtight waterproof sheet 72 and the draining waterproof sheet 75 are shown by a thick solid line so that the waterproof sheets can be easily distinguished from each other.
Further, each of the waterproof sheets 71, 72, and 75 has flexibility similarly to a general waterproof sheet, and is configured to be bendable along the existing frame 2 and the like.

［外壁用の防水シート］
外壁部分において、既設外壁１の裏面側には既設の防水シートなどが設けられている。ただし、この既設の防水シートは劣化している可能性もある。このため、改装時には、新設の防水シート７１を装着して建物の外壁における防水構造を構成している。すなわち、既設外壁１と新設断熱材３１との間には、防水シート７１が接着されている。この防水シート７１によって、新設外装材３０の裏面側に設けられる防水層が構成される。
図１に示すように、既設上枠２１と新設断熱材３１との間に配置される防水シート７１の端部は、後述するように、気密防水シート７２、水切用防水シート７５の屋外側に重なって配置されている。また、既設下枠２２と新設断熱材３１との間に配置される防水シート７１の端部は、気密防水シート７２の屋内側に重なって配置されている。すなわち、上下方向に連続する防水シートの連続部分では、上側の防水シートが下側の防水シートの屋外側に重なり、水が流れ落ちた際に、防水シートの屋外面側を流れるようにしている。
また、図２に示すように、既設縦枠２３、２４と新設断熱材３１との間に配置される防水シート７１の端部は、気密防水シート７２の屋外側に重なって配置されている。これらの各防水シート７１，７２，７５の重なり部分は、両面テープなどで互いに接着されている。 [Waterproof sheet for outer wall]
In the outer wall portion, an existing waterproof sheet or the like is provided on the back surface side of the existing outer wall 1. However, this existing tarpaulin may have deteriorated. Therefore, at the time of renovation, a new waterproof sheet 71 is attached to form a waterproof structure on the outer wall of the building. That is, the waterproof sheet 71 is bonded between the existing outer wall 1 and the new heat insulating material 31. The waterproof sheet 71 constitutes a waterproof layer provided on the back surface side of the new exterior material 30.
As shown in FIG. 1, the end portion of the waterproof sheet 71 arranged between the existing upper frame 21 and the new heat insulating material 31 is on the outdoor side of the airtight waterproof sheet 72 and the draining waterproof sheet 75 as described later. It is arranged to overlap. Further, the end portion of the waterproof sheet 71 arranged between the existing lower frame 22 and the new heat insulating material 31 is arranged so as to overlap with the indoor side of the airtight waterproof sheet 72. That is, in the continuous portion of the waterproof sheet continuous in the vertical direction, when the upper waterproof sheet overlaps the outdoor side of the lower waterproof sheet and water flows down, the waterproof sheet flows on the outdoor surface side of the waterproof sheet.
Further, as shown in FIG. 2, the end portion of the waterproof sheet 71 arranged between the existing vertical frames 23 and 24 and the new heat insulating material 31 is arranged so as to overlap the outdoor side of the airtight waterproof sheet 72. The overlapping portions of these waterproof sheets 71, 72, 75 are adhered to each other with double-sided tape or the like.

［密閉用の防水シート］
既設枠２と、新設枠４との間には、気密防水シート７２が設けられている。気密防水シート７２は、貫通孔等から浸入しようとする水を高分子吸収体が水を吸って膨潤し、貫通孔をふさぐ機能を備えており、例えば、スリーエムジャパン株式会社製の止水機能付き外壁防水シート2407等が利用できる。
既設枠２および新設枠４間をつなぐ気密防水シート７２は、既設枠２の四周内周面に沿って配置され、既設枠２および新設枠４間において屋内外方向に空気が流通しないように密閉している。
すなわち、気密防水シート７２は、図１、３に示すように、既設上枠２１および新設上枠４１間では、既設上枠２１の屋外面に両面テープなどで貼り付けられ、既設上枠２１および調整部材４１６の内周面（下面）に沿って屋内側に折り込まれている。気密防水シート７２の屋内側端部は、調整部材４１５および取付片４１１の屋内面に沿って折り曲げられ、さらに取付片４１１の内周面に沿って屋外側に折り返され、取付片４１１に両面テープなどで貼り付けられている。 [Waterproof sheet for sealing]
An airtight waterproof sheet 72 is provided between the existing frame 2 and the new frame 4. The airtight waterproof sheet 72 has a function of swelling water that is about to enter through the through holes and the like by the polymer absorber absorbing the water and closing the through holes. For example, with a water stopping function manufactured by 3M Japan Co., Ltd. The outer wall waterproof sheet 2407 etc. can be used.
The airtight waterproof sheet 72 connecting between the existing frame 2 and the new frame 4 is arranged along the four inner circumferential surfaces of the existing frame 2 and is hermetically sealed so that air does not flow between the existing frame 2 and the new frame 4 in the indoor and outdoor directions. is doing.
That is, as shown in FIGS. 1 and 3, the airtight waterproof sheet 72 is attached between the existing upper frame 21 and the new upper frame 41 on the outdoor surface of the existing upper frame 21 with a double-sided tape or the like, The inside of the adjusting member 416 is folded along the inner peripheral surface (lower surface) thereof. The indoor side end of the airtight waterproof sheet 72 is bent along the indoor surfaces of the adjusting member 415 and the mounting piece 411, and further folded back to the outdoor side along the inner peripheral surface of the mounting piece 411, and the double-sided tape is attached to the mounting piece 411. It is pasted with.

気密防水シート７２は、図１に示すように、既設下枠２２および新設下枠４２間では、既設下枠２２の屋外面に貼られた防水シート７１の屋外面に両面テープなどで貼り付けられ、支持ブラケット２２１、既設下枠２２および調整部材４２６の上面に沿って配置されている。気密防水シート７２の屋内側端部は、取付片４２１の屋内面に沿って折り曲げられ、さらに取付片４２１の内周面に沿って屋外側に折り返され、取付片４２１に両面テープなどで貼り付けられている。 As shown in FIG. 1, between the existing lower frame 22 and the new lower frame 42, the airtight waterproof sheet 72 is attached to the outdoor surface of the waterproof sheet 71 attached to the outdoor surface of the existing lower frame 22 with a double-sided tape or the like. The support bracket 221, the existing lower frame 22, and the adjustment member 426 are arranged along the upper surfaces thereof. Indoor side end portion of the airtight waterproof sheet 72 is folded along the ya plane of the mounting piece 421 is folded back to the outside side further along the inner peripheral surface of the mounting piece 421, attached to the mounting piece 421 double-sided tape It is attached.

気密防水シート７２は、図２に示すように、既設縦枠２３、２４および新設縦枠４３、４４間では、既設縦枠２３、２４の屋外面に両面テープなどで貼り付けられ、既設縦枠２３、２４および既設額縁２６の内面に沿って配置されている。気密防水シート７２の屋内側端部は、調整部材４３５、４４５の屋内面に沿って折り曲げられ、さらに取付片４３１、４４１の内周面まで折り返され、取付片４３１、４４１に両面テープなどで貼り付けられている。
気密防水シート７２の屋内側端縁は、新設枠４の取付片４１１，４２１，４３１，４４１の内周面に沿って配置される新設額縁３６により、屋内側に露出しないように隠されている。 As shown in FIG. 2, the airtight waterproof sheet 72 is attached between the existing vertical frames 23, 24 and the new vertical frames 43, 44 on the outdoor surface of the existing vertical frames 23, 24 with a double-sided tape or the like. It is arranged along the inner surfaces of 23 and 24 and the existing frame 26. Indoor side end portion of the airtight waterproof sheet 72 is folded along the indoors surface of the adjusting member 435, 445, further folded to the inner peripheral surface of the mounting piece 431 and 441, the mounting piece 431 and 441 in double-sided tape It is pasted.
The indoor side edge of the airtight waterproof sheet 72 is hidden by the new frame 36 arranged along the inner peripheral surface of the mounting pieces 411, 421, 431, 441 of the new frame 4 so as not to be exposed to the indoor side. .

［水切用の防水シート］
図１，３に示すように、既設上枠２１から水切材６０まで、水切用防水シート７５が設けられている。水切用防水シート７５は、気密防水シート７２と同じく気密性を有するシートである。水切用防水シート７５の屋内側端部は、既設上枠２１の屋外面に貼られた気密防水シート７２の表面（屋外面）に両面テープなどで貼られている。なお、新設断熱材３１および既設外壁１間に配置された前記防水シート７１の端部は、既設上枠２１の屋外面と新設断熱材３１との間において、水切用防水シート７５の表面（屋外面）に両面テープなどで貼られている。すなわち、既設上枠２１の屋外面と新設断熱材３１との間には、屋内側から気密防水シート７２、水切用防水シート７５、防水シート７１が積層されている。 [Waterproof sheet for draining water]
As shown in FIGS. 1 and 3, a draining waterproof sheet 75 is provided from the existing upper frame 21 to the draining member 60. The waterproof sheet 75 for draining is a sheet having airtightness like the airtight waterproof sheet 72. The indoor side end of the waterproof sheet 75 for draining is attached to the surface (outdoor surface) of the airtight waterproof sheet 72 attached to the outdoor surface of the existing upper frame 21 with a double-sided tape or the like. In addition, the end portion of the waterproof sheet 71 arranged between the new heat insulating material 31 and the existing outer wall 1 is located between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31 on the surface of the waterproof sheet 75 for draining (outdoor). The surface) is attached with double-sided tape. That is, between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31, the airtight waterproof sheet 72, the draining waterproof sheet 75, and the waterproof sheet 71 are laminated from the indoor side.

水切用防水シート７５の屋外側端部は、水切用防水シート７５の屋内側端部よりも低い位置で、水切材６０の傾斜部６３の表面に両面テープなどで貼られている。このため、水切用防水シート７５は、屋内側端部で防水シート７１に連続して設けられ、この屋内型端部から屋外側端部に向かって、水切用防水シート７５の表面が下り勾配となるように設けられている。
したがって、新設断熱材３１および既設外壁１間に浸入した雨水は、防水シート７１に沿って流れ、水切用防水シート７５から水切材６０の傾斜部６３上に流れ、水抜き部品６８から屋外側に排水される。 The outdoor side end of the drainage waterproof sheet 75 is lower than the indoor side end of the drainage waterproof sheet 75, and is attached to the surface of the inclined portion 63 of the drainage member 60 with a double-sided tape or the like. Therefore, the draining waterproof sheet 75 is provided continuously to the waterproof sheet 71 at the indoor end, and the surface of the draining waterproof sheet 75 has a downward slope from the indoor end to the outdoor end. Is provided.
Therefore, the rainwater that has entered between the new heat insulating material 31 and the existing outer wall 1 flows along the waterproof sheet 71, flows from the drain waterproof sheet 75 onto the inclined portion 63 of the drain material 60, and from the drain component 68 to the outdoor side. Be drained.

［断熱構造］
次に、本実施形態における断熱構造について説明する。
既設外壁１と新設外装材３０との間には、断熱層８０が形成されている。断熱層８０は、主に新設断熱材３１で構成され、新設上枠４１と新設断熱材３１との間は、気密防水シート７２および水切用防水シート７５で区画される空気層８１によって構成されている。
空気層８１は、気密防水シート７２および水切用防水シート７５、水切材６０、新設上枠４１で囲まれた空間であり、空気の対流が生じない小さな容積とされている。このため、空気層８１も断熱層８０として機能する。
また、新設下枠４２、新設縦枠４３、４４には、新設断熱材３１が当接されている。このため、外壁部分には、新設枠４に連続する断熱層８０が、新設断熱材３１および空気層８１によって構成されている。
断熱層８０（新設断熱材３１および空気層８１）は、既設枠２の屋外面を覆っており、既設枠２の屋外側に断熱ラインが構成されているので、新設外装材３０から既設枠２に伝わる熱流量を低減でき、外気温が低い場合でも、アルミ押出形材からなる既設枠２の温度が低下して結露が生じることを抑制できる。 [Adiabatic structure]
Next, the heat insulating structure in this embodiment will be described.
A heat insulating layer 80 is formed between the existing outer wall 1 and the new exterior material 30. The heat insulating layer 80 is mainly composed of the new heat insulating material 31, and the space between the new upper frame 41 and the new heat insulating material 31 is composed of the air layer 81 partitioned by the airtight waterproof sheet 72 and the draining waterproof sheet 75. There is.
The air layer 81 is a space surrounded by the airtight waterproof sheet 72, the waterproof sheet 75 for draining water, the draining member 60, and the new upper frame 41, and has a small volume in which convection of air does not occur. Therefore, the air layer 81 also functions as the heat insulating layer 80.
The new heat insulating material 31 is in contact with the new lower frame 42 and the new vertical frames 43 and 44. Therefore, in the outer wall portion, a heat insulating layer 80 continuous with the new frame 4 is formed by the new heat insulating material 31 and the air layer 81.
The heat insulating layer 80 (the new heat insulating material 31 and the air layer 81) covers the outdoor surface of the existing frame 2, and the heat insulating line is formed on the outdoor side of the existing frame 2, so that the new exterior material 30 to the existing frame 2 is formed. It is possible to reduce the heat flow rate transmitted to, and it is possible to suppress the occurrence of dew condensation due to a decrease in the temperature of the existing frame 2 made of the aluminum extruded profile even when the outside temperature is low.

新設窓においては、樹脂製の新設枠４と、樹脂製の框５１，５２，５３，５４と、トリプルガラス４７、５７を用いることで断熱性能を確保している。特に、新設窓において、屋外の空気に触れる面積が最も大きい面材においては、トリプルガラス４７，５７を採用することで断熱性能を高めており、このトリプルガラス４７、５７に沿って屋内外の熱流量を低減させる断熱ラインが構成される。
また、新設枠４および各框５１，５２，５３，５４においても、樹脂製とし、さらに見付け方向に並んだ複数の中空部を備えることで、断熱性能を向上させている。 In the new window, the new frame 4 made of resin, the frames 51, 52, 53, 54 made of resin, and the triple glasses 47, 57 are used to ensure heat insulation performance. Especially, in the new window, the heat insulation performance is improved by adopting the triple glass 47, 57 for the surface material that has the largest area exposed to the outdoor air. An adiabatic line is constructed to reduce the flow rate.
Further, the new frame 4 and each of the frames 51, 52, 53, 54 are also made of resin and further provided with a plurality of hollow portions arranged in the finding direction to improve the heat insulation performance.

ここで、新設窓が配置される開口部分において、トリプルガラス４７、５７の少なくとも１枚のガラスは、新設断熱材３１同士を結ぶ断熱ライン内に配置されている。
ＦＩＸ窓のトリプルガラス４７において、最も屋外側に配置されたガラスは、見込み方向において前記断熱層８０と重なる位置に配置されている。
縦すべり出し窓の新設障子５のトリプルガラス５７において、最も屋外側に配置されたガラスと、中間に配置されたガラスとは、見込み方向において前記断熱層８０と重なる位置に配置されている。
したがって、新設窓に設けられた面材であるトリプルガラス４７、５７の少なくとも１枚のガラスは、前記断熱ラインに掛かる（重なる）位置、つまり見込み方向において前記断熱層８０と重なる位置に配置されている。
このため、断熱層８０と、新設枠４と、新設枠４内に配置された新設障子５（框５１〜５４とトリプルガラス５７）およびトリプルガラス４７とで、外壁面に沿って断熱ラインが形成されている。 Here, at the opening portion where the new window is arranged, at least one glass of the triple glasses 47 and 57 is arranged in the heat insulation line connecting the new heat insulation materials 31.
In the triple glass 47 of the FIX window, the glass arranged on the outermost side is arranged at a position overlapping the heat insulating layer 80 in the prospective direction.
In the triple glass 57 of the new shoji 5 having a vertical sliding window, the glass arranged on the outermost side and the glass arranged in the middle are arranged at positions overlapping the heat insulating layer 80 in the prospective direction.
Therefore, at least one glass of the triple glasses 47 and 57, which are the surface materials provided on the new window, is arranged at a position that hangs (overlaps) on the heat insulation line, that is, at a position that overlaps with the heat insulation layer 80 in the prospective direction. There is.
Therefore, the heat insulating layer 80, the new frame 4, the new shoji 5 (frames 51 to 54 and triple glass 57) and the triple glass 47 arranged in the new frame 4 form a heat insulating line along the outer wall surface. Has been done.

新設枠４は、既設枠２の内周面を覆うように配置されている。このため、既設枠２の内周面は断熱性能の高い樹脂製（断熱部材製）の新設枠４で覆われる。したがって、既設枠２の屋外面および内周面は、断熱層８０と、この断熱層８０に連続して設けられた新設枠４とで覆われて外気に触れることがないため、新設枠４から既設枠２に伝わる熱流量も低減でき、外気温が低い場合でも、アルミ押出形材からなる既設枠２の温度が低下して結露が生じることを抑制できる。   The new frame 4 is arranged so as to cover the inner peripheral surface of the existing frame 2. Therefore, the inner peripheral surface of the existing frame 2 is covered with a new frame 4 made of resin (made of a heat insulating member) having high heat insulation performance. Therefore, since the outdoor surface and the inner peripheral surface of the existing frame 2 are covered with the heat insulating layer 80 and the new frame 4 continuously provided to the heat insulating layer 80 and are not exposed to the outside air, The heat flow rate transmitted to the existing frame 2 can also be reduced, and even when the outside air temperature is low, it is possible to suppress the temperature of the existing frame 2 made of the extruded aluminum material from decreasing and causing dew condensation.

［改装工法］
次に、本実施形態の外壁改装構造の施工方法について説明する。
まず、既設建具の障子（不図示）を既設枠２から取り外す。また、調整部材４１６、４２６を先付けし、既設上枠２１、既設下枠２２と、既設額縁２６との段差を無くしておく。
そして、既設枠２の屋外面に気密防水シート７２を貼り付けて、建物開口部の周囲において、気密防水シート（気密シート）７２の屋外側端部の貼り付け工程を行う。なお、既設下枠２２部分は、防水シート７１が先に貼り付けられているので、防水シート７１の表面に気密防水シート７２の屋外側端部を貼り付ける。
気密防水シート７２は、帯状（テープ状）に形成されたものが利用でき、このテープ状の気密防水シート７２の長手方向の２辺のうちの一辺（屋外側端部）を、各枠２１，２２，２３，２４の屋外面に沿って粘着テープなどで貼り付ける。例えば、既設上枠２１の左右方向の中央部から気密防水シート７２の貼り付けを開始し、既設上枠２１から既設縦枠２３、既設下枠２２、既設縦枠２４に順次気密防水シート７２を貼り付け、既設上枠２１の貼付開始位置に重なる位置まで気密防水シート７２を貼り付ける。この気密防水シート７２は、後述するように、防水シート７１つまり防水層に連続する防水シートである。
なお、既設枠２のコーナー部で気密防水シート７２の貼付方向を９０度変化させる場合は、気密防水シート７２の外周側に切り込みを入れて方向を変化させればよい。この気密防水シート７２の切り込み部分は、別の防水テープを重ねて貼り付けて塞いでおく。 [Renovation method]
Next, a method of constructing the outer wall remodeling structure of this embodiment will be described.
First, the shoji (not shown) of the existing fitting is removed from the existing frame 2. Further, the adjustment members 416 and 426 are attached in advance so that the step between the existing upper frame 21, the existing lower frame 22 and the existing frame 26 is eliminated.
Then, the airtight waterproof sheet 72 is attached to the outdoor surface of the existing frame 2, and the step of attaching the outdoor end of the airtight waterproof sheet (airtight sheet) 72 is performed around the building opening. Since the waterproof sheet 71 is attached to the existing lower frame 22 first, the outdoor end of the airtight waterproof sheet 72 is attached to the surface of the waterproof sheet 71.
As the airtight waterproof sheet 72, one formed in a band shape (tape shape) can be used, and one side (outdoor side end portion) of the two longitudinal sides of the tape-shaped airtight waterproof sheet 72 is attached to each frame 21, Stick along the outdoor surface of 22, 23, 24 with adhesive tape or the like. For example, the attachment of the airtight waterproof sheet 72 is started from the center portion of the existing upper frame 21 in the left-right direction, and the airtight waterproof sheet 72 is sequentially installed from the existing upper frame 21 to the existing vertical frame 23, the existing lower frame 22, and the existing vertical frame 24. The airtight waterproof sheet 72 is pasted up to a position overlapping the pasting start position of the existing upper frame 21. The airtight waterproof sheet 72 is a waterproof sheet continuous with the waterproof sheet 71, that is, the waterproof layer, as described later.
When the attachment direction of the airtight waterproof sheet 72 is changed by 90 degrees at the corner portion of the existing frame 2, the direction may be changed by making a notch on the outer peripheral side of the airtight waterproof sheet 72. The cut portion of the airtight waterproof sheet 72 is covered with another waterproof tape so as to be stuck and closed.

次に、気密防水シート７２の他の一辺側を、各枠２１，２２，２３，２４の内周面に沿って屋内側に折り込み、気密防水シート（気密シート）７２を建物開口部の内周面に沿って配置する工程を行う。   Next, the other side of the airtight waterproof sheet 72 is folded toward the indoor side along the inner peripheral surface of each of the frames 21, 22, 23, 24, and the airtight waterproof sheet (airtight sheet) 72 is placed on the inner circumference of the building opening. The step of placing along the surface is performed.

なお、気密防水シート７２は、テープ状のものに限らず、既設枠２とほぼ同じ大きさの１枚のシートでも構成できる。この場合は、気密防水シート７２の四周縁部を既設枠２の屋外面に貼り付けた後、気密防水シート７２の既設枠２の開口部分に切り込みを入れ、既設枠２に沿って屋内側に折り込む。切り込みは、例えば、既設枠２の開口の四隅、つまり既設上枠２１および既設下枠２２と、既設縦枠２３、２４とが接合されたコーナー部分から、斜め４５度の角度で切り込み、２つのコーナー部からの切り込み線が交差する点同士を結ぶ線で切り込むことで、２つの三角形と、２つの台形の折り込み部分が形成されるように設定すればよい。また、気密防水シート７２の折り込み部分同士の間は、コーナー用のシート材を貼り付けて塞いでおく。   The airtight waterproof sheet 72 is not limited to a tape-shaped sheet, and can be a single sheet having substantially the same size as the existing frame 2. In this case, after sticking the four peripheral edges of the airtight waterproof sheet 72 to the outdoor surface of the existing frame 2, make a notch in the opening portion of the existing frame 2 of the airtight waterproof sheet 72, and along the existing frame 2 to the indoor side. Fold in. The cut is, for example, four corners of the opening of the existing frame 2, that is, a corner portion where the existing upper frame 21 and the existing lower frame 22 and the existing vertical frames 23 and 24 are joined, and is cut at an angle of 45 degrees diagonally. It may be set so that two triangles and two trapezoidal folds are formed by cutting along a line connecting points where the cutting lines from the corners intersect. In addition, a sheet material for corners is attached and closed between the folded portions of the airtight waterproof sheet 72.

次に、建物開口部内に新設枠４を配置する工程を行う。この際、新設枠４は釘ヒレが無いため、見込み方向の位置調整が可能である。このため、新設外装材３０、胴縁３２、新設断熱材３１の見込み寸法（厚さ寸法）に応じて、新設枠４の見込み方向の取付位置を調整すればよい。例えば、新設枠４の屋外端面が、新設外装材３０の屋外面にほぼ揃う位置に配置する。   Next, the step of arranging the new frame 4 inside the building opening is performed. At this time, since the new frame 4 does not have nail fins, position adjustment in the prospective direction is possible. Therefore, the mounting position of the new frame 4 in the prospective direction may be adjusted according to the prospective dimensions (thickness dimensions) of the new exterior material 30, furring strip 32, and new heat insulating material 31. For example, the outdoor end surface of the new frame 4 is arranged at a position substantially aligned with the outdoor surface of the new exterior material 30.

次に、気密防水シート７２の屋内側端部を、新設枠４の屋内側の部位である取付片４１１，４２１，４３１，４４１側に折返し、取付片４１１，４２１，４３１，４４１の内周面に防水性を有する両面テープなどを用いて貼り付ける工程を行う。なお、気密防水シート７２の余った部分はカッターなどで切り取ればよい。   Next, the indoor side end of the airtight waterproof sheet 72 is folded back to the side of the installation piece 411, 421, 431, 441 which is the indoor side portion of the new frame 4, and the inner peripheral surface of the installation piece 411, 421, 431, 441. The step of attaching with a waterproof double-sided tape is performed. The remaining portion of the airtight waterproof sheet 72 may be cut off with a cutter or the like.

次に、新設枠４をネジ１５で躯体１０に取り付ける。ネジ１５は、気密防水シート７２に穴をあけるが、気密防水シート７２は膨潤性を有するため、水が浸入した場合は、気密防水シート７２が水を吸って膨らみ、ネジ１５で形成された穴を塞ぐため、気密防水シート７２から屋内側への水の浸入を防止できる。   Next, the new frame 4 is attached to the body 10 with the screws 15. The screw 15 makes a hole in the airtight waterproof sheet 72, but since the airtight waterproof sheet 72 has a swelling property, when water enters, the airtight waterproof sheet 72 absorbs water and swells, and the hole formed by the screw 15 Since it is closed, it is possible to prevent water from entering the indoor side from the airtight waterproof sheet 72.

次に、既設上枠２１の屋外面に貼られた気密防水シート７２の表面と、新設上枠４１に予め取り付けられた水切材６０の傾斜部６３との間に、水切用防水シート７５を貼り付ける。また、既設外壁１の表面に貼った防水シート７１を水切用防水シート７５の表面に貼り付ける。さらに、水切用防水シート７５が設けられていない既設縦枠２３、２４部分などでは、防水シート７１を気密防水シート７２に貼り付ける。これにより、気密防水シート７２は、防水シート７１で構成される防水層に連続して設けられる。   Next, a waterproof sheet 75 for draining is attached between the surface of the airtight waterproof sheet 72 attached to the outdoor surface of the existing upper frame 21 and the inclined portion 63 of the draining member 60 previously attached to the new upper frame 41. wear. Further, the waterproof sheet 71 attached to the surface of the existing outer wall 1 is attached to the surface of the draining waterproof sheet 75. Further, the waterproof sheet 71 is attached to the airtight waterproof sheet 72 at the existing vertical frames 23 and 24 where the draining waterproof sheet 75 is not provided. Thereby, the airtight waterproof sheet 72 is continuously provided on the waterproof layer formed of the waterproof sheet 71.

また、既設外壁１の屋外面に沿って新設断熱材３１を配置し、胴縁３２を介して新設外装材３０を取り付ける。さらに、新設枠４と新設外装材３０との間に、バックアップ材６６および湿式シーリング材６７を充填する。
以上によって、外壁および窓の改装作業が終了する。 Further, the new heat insulating material 31 is arranged along the outdoor surface of the existing outer wall 1, and the new outer covering material 30 is attached via the furring strip 32. Further, a backup material 66 and a wet sealing material 67 are filled between the new frame 4 and the new exterior material 30.
This completes the work of refurbishing the outer walls and windows.

なお、新設外装材３０および新設枠４を設置して改装した後に、窓の種類を変更するため、あるいは、窓が破損、劣化したために新設窓を更に交換する場合は、新設外装材３０、新設断熱材３１等を残したまま、新設枠４および新設障子５を取り外して交換することができる。
この場合、新設カバー材３８、新設額縁３６を取り外し、新設枠４および気密防水シート７２の屋内側を露出させる。そして、気密防水シート７２の屋内露出部分をカッターなどで切断し、気密防水シート７２の内周面や、調整部材４１６、４２６、既設額縁２６等に沿って配置されている部分と、取付片４１１，４２１，４３１，４４１に貼られた部分とを分離する。
また、湿式シーリング材６７、バックアップ材６６も適宜除去しておく。さらに、新設上枠４１と新設断熱材３１との間では、水切用防水シート７５を切断して水切材６０から分離する。そして、新設枠４を躯体１０に固定しているネジ１５を外し、新設枠４を建物開口部から屋外側に取り外す。
その後、建物開口部に残っている気密防水シート７２や水切用防水シート７５に新たな気密防水シートを連結し、新たな新設窓を屋外側から吊り込む。
そして、新設枠４の屋内側では、気密防水シート７２に連結した気密防水シートを取付片４１１，４２１，４３１，４４１の内周面に折り返して貼り付け、新設枠４をネジ１５で躯体１０に取り付け、新設額縁３６や新設カバー材３８を新たに設けて仕上げる。また、新設枠４の屋外側では、水切用防水シート７５に連結した気密防水シートを、新設枠４の水切材６０の傾斜部６３に貼り付け、新設外装材３０との隙間部分にバックアップ材６６、湿式シーリング材６７を充填して仕上げる。
以上の作業によって、新設窓の交換作業を行うことができる。 In addition, after the new exterior material 30 and the new installation frame 4 are installed and refurbished, the new exterior material 30 and the new exterior material 30 need to be installed in order to change the type of the window or to replace the new window because the window is damaged or deteriorated. The new frame 4 and the new shoji 5 can be removed and replaced with the heat insulating material 31 and the like remaining.
In this case, the new cover material 38 and the new frame 36 are removed to expose the indoor side of the new frame 4 and the airtight waterproof sheet 72. Then, the indoor exposed portion of the airtight waterproof sheet 72 is cut with a cutter or the like, and the inner peripheral surface of the airtight waterproof sheet 72, the adjustment members 416 and 426, the portion arranged along the existing frame 26, and the attachment piece 411. , 421, 431, and 441 are separated.
The wet sealing material 67 and the backup material 66 are also removed as appropriate. Further, between the new upper frame 41 and the new heat insulating material 31, the waterproof sheet 75 for draining is cut and separated from the draining material 60. Then, the screws 15 fixing the new frame 4 to the frame 10 are removed, and the new frame 4 is removed from the building opening to the outdoor side.
After that, a new airtight waterproof sheet is connected to the airtight waterproof sheet 72 and the draining waterproof sheet 75 remaining in the building opening, and a new new window is suspended from the outdoor side.
Then, on the indoor side of the new frame 4, the airtight waterproof sheet connected to the airtight waterproof sheet 72 is folded back and attached to the inner peripheral surfaces of the mounting pieces 411, 421, 431, 441, and the new frame 4 is attached to the frame 10 with the screws 15. Attachment, a new frame 36 and a new cover material 38 are newly provided and finished. Further, on the outdoor side of the new frame 4, an airtight waterproof sheet connected to the waterproof sheet 75 for draining is attached to the inclined portion 63 of the draining material 60 of the new frame 4, and a backup material 66 is provided in a gap portion with the new exterior material 30. Then, the wet sealing material 67 is filled and finished.
With the above work, the new window can be replaced.

［第１実施形態の作用効果］
このような第１実施形態によれば、次のような効果がある。 [Operation and effect of the first embodiment]
According to such a first embodiment, there are the following effects.

（１）防水層を構成する防水シート７１を、新設断熱材３１の屋外面から既設枠２まで設け、防水シート７１に連続する気密防水シート７２を既設枠２から新設枠４まで配置しているので、新設枠４と新設外装材３０との間をシールする湿式シーリング材６７を一次シールとし、防水シート７１および気密防水シート７２を二次シールとすることができる。これにより、湿式シーリング材６７が破損・劣化した場合でも、防水シート７１および気密防水シート７２により防水ラインを維持でき、屋内側への水の浸入を防止できる。このため、湿式シーリング材６７のみが設けられている場合や、防水シート７１と気密防水シート７２とが連続していない場合に比べて、水密性および気密性を向上できる。
また、防水シート７１に連続する気密防水シート７２は、新設枠４や既設枠２に両面テープなどで貼り付けることができるので、施工作業を容易に行うことができる。
さらに、一次シールとなる湿式シーリング材６７と、二次シールとなる防水シート７１および気密防水シート７２とを設けているので、新設外装材３０と、防水シート７１および気密防水シート７２間とを外気と等圧な空間にでき、圧力差による雨水の浸入を防止でき、水密性および気密性を向上できる。 (1) A waterproof sheet 71 forming a waterproof layer is provided from the outdoor surface of the new heat insulating material 31 to the existing frame 2, and an airtight waterproof sheet 72 continuous to the waterproof sheet 71 is provided from the existing frame 2 to the new frame 4. Therefore, the wet sealing material 67 that seals between the newly installed frame 4 and the newly installed exterior material 30 can be a primary seal, and the waterproof sheet 71 and the airtight waterproof sheet 72 can be a secondary seal. As a result, even if the wet sealing material 67 is damaged or deteriorated, the waterproof line can be maintained by the waterproof sheet 71 and the airtight waterproof sheet 72, and water can be prevented from entering the indoor side. Therefore, the watertightness and airtightness can be improved as compared with the case where only the wet sealing material 67 is provided or the case where the waterproof sheet 71 and the airtight waterproof sheet 72 are not continuous.
Further, since the airtight waterproof sheet 72 continuous with the waterproof sheet 71 can be attached to the new frame 4 or the existing frame 2 with a double-sided tape or the like, the construction work can be easily performed.
Furthermore, since the wet sealing material 67 that serves as the primary seal and the waterproof sheet 71 and the airtight waterproof sheet 72 that serves as the secondary seal are provided, the newly installed exterior material 30 and the space between the waterproof sheet 71 and the airtight waterproof sheet 72 are exposed to the outside air. This makes it possible to create a space of equal pressure, prevent rainwater from entering due to a pressure difference, and improve water tightness and airtightness.

（２）既設枠２と新設枠４との間を塞ぐ気密防水シート７２を、新設枠４の外周側から新設枠４の屋内側の取付片４１１、４２１、４３１、４４１の内周面に折り返して貼り付けているので、気密防水シート７２を新設枠４の屋内側に連続するように貼り付けることができる。
このため、気密防水シート７２を新設枠４に貼り付ける作業を、新設枠４の内周面側から行うことができ、容易に作業できる。
また、気密防水シート７２が新設枠４の内周側に露出するため、新設枠４の取り付け後に、新設枠４の交換が必要となった場合でも、気密防水シート７２の屋内側に露出する部分を切断することで、気密防水シート７２と新設枠４とを切り離して新設枠４を容易に取り外すことができる。さらに、建物開口部に残っている気密防水シート７２に新たな気密防水シートを連結し、新たに設置した新設枠４の屋内側に貼り付けることで、交換後の新設枠４との防水処理も容易に行うことができ、窓交換時の防水ラインの復旧を容易に行うことができる。 (2) The airtight waterproof sheet 72 that closes the gap between the existing frame 2 and the new frame 4 is folded back from the outer peripheral side of the new frame 4 to the inner peripheral surfaces of the indoor side mounting pieces 411, 421, 431, 441 of the new frame 4. Since the airtight waterproof sheet 72 is attached to the inside of the new frame 4, the airtight waterproof sheet 72 can be attached continuously.
Therefore, the work of attaching the airtight waterproof sheet 72 to the new frame 4 can be performed from the inner peripheral surface side of the new frame 4, and the work can be easily performed.
Further, since the airtight waterproof sheet 72 is exposed to the inner peripheral side of the new installation frame 4, even if the new installation frame 4 needs to be replaced after the new installation frame 4 is attached, the portion exposed to the indoor side of the airtight waterproof sheet 72. By cutting, the airtight waterproof sheet 72 and the new frame 4 can be separated and the new frame 4 can be easily removed. Furthermore, by connecting a new airtight waterproof sheet to the airtight waterproof sheet 72 remaining in the building opening and attaching it to the indoor side of the newly installed new frame 4, the waterproof processing with the new frame 4 after replacement can also be performed. It can be easily performed, and the waterproof line can be easily restored when the window is replaced.

（３）既設外壁１の屋外側に防水シート７１を配置して防水層を形成し、この防水シートの屋外側に新設外装材３０を配置し、既設枠２の開口内周側に新設枠４を配置し、防水シート７１に連続する気密防水シート７２を新設枠４に貼り付けているので、外壁、窓および防水ラインの改装を容易に行うことができる。
また、気密防水シート７２は可撓性を有しており、屈曲させることができるので、様々な形状の新設枠４に合わせて気密防水シート７２を配置でき、さらに新設枠４の屋内側では気密防水シート７２を新設枠４の内周面側に折り曲げて貼り付けることができる。このため、防水層から新設枠４までの水密性・気密性を容易に確保できる。
さらに、気密防水シート７２は、水により膨潤する特性を有するため、気密防水シート７２を介してネジ１５をねじ込むことで形成された穴や、気密防水シート７２が損傷した場合の損傷部分に、水が浸入した場合でも、気密防水シート７２が膨潤することにより、水が気密防水シート７２を超えて新設枠４の屋内側に浸入することを抑制でき、より高い防水性能を備えることができる。 (3) A waterproof sheet 71 is arranged on the outdoor side of the existing outer wall 1 to form a waterproof layer, a new exterior material 30 is arranged on the outdoor side of this waterproof sheet, and a new frame 4 is provided on the inner peripheral side of the opening of the existing frame 2. Since the airtight waterproof sheet 72 continuous with the waterproof sheet 71 is attached to the new frame 4, the outer wall, the window and the waterproof line can be easily refurbished.
Further, since the airtight waterproof sheet 72 is flexible and can be bent, the airtight waterproof sheet 72 can be arranged in accordance with the new frame 4 having various shapes, and further, the airtight waterproof sheet 72 is airtight on the indoor side of the new frame 4. The waterproof sheet 72 can be bent and attached to the inner peripheral surface side of the new installation frame 4. Therefore, the watertightness and airtightness from the waterproof layer to the new frame 4 can be easily ensured.
Further, since the airtight waterproof sheet 72 has a property of swelling with water, the watertight waterproof sheet 72 has a hole formed by screwing the screw 15 through the airtight waterproof sheet 72 and a damaged portion when the airtight waterproof sheet 72 is damaged. Even when water enters, the airtight waterproof sheet 72 swells, so that it is possible to prevent water from entering the indoor side of the new frame 4 beyond the airtight waterproof sheet 72, and it is possible to provide higher waterproof performance.

（４）新設外装材３０の屋内面側に設けた防水シート７１に連続する気密防水シート７２を、建物開口部の周囲（既設枠２の屋外面）と、新設枠４の屋内側の部位（取付片４１１，４２１，４３１，４４１）とに貼り付けることで、防水シート７１から新設枠４まで防水ラインを容易に構成でき、水密性・気密性を容易に確保できる。また、防水シート７１を設け、新設枠４を配置し、気密防水シート７２を新設枠４に貼り付けて、防水シート７１から新設枠４までの防水ラインを形成するまでの間に、湿式のシーリング材を用いていないので、現場での施工時間を短くすることができる。 (4) The airtight waterproof sheet 72 continuous with the waterproof sheet 71 provided on the indoor surface side of the new exterior material 30 is provided around the building opening (outdoor surface of the existing frame 2) and on the indoor side portion of the new frame 4 ( By attaching to the attachment pieces 411, 421, 431, 441), a waterproof line from the waterproof sheet 71 to the new frame 4 can be easily constructed, and watertightness and airtightness can be easily secured. In addition, a waterproof sheet 71 is provided, the new frame 4 is arranged, the airtight waterproof sheet 72 is attached to the new frame 4, and a wet sealing is performed until a waterproof line from the waterproof sheet 71 to the new frame 4 is formed. Since no material is used, the construction time on site can be shortened.

（５）既設外壁１の屋外側に新設外装材３０を配置し、新設外装材３０および既設外壁１間に新設断熱材３１を設けたので、外壁部分の断熱性能を向上できる。また、既設枠２の開口内周側に配置された新設枠４を樹脂製としているので、新設枠４自体の断熱性能も向上できる。
さらに、既設枠２を、新設断熱材３１や空気層８１で構成される断熱層８０と、新設枠４とで被覆し、既設枠２が屋外に露出しないように覆っているので、既設枠２を介した熱流出を低減できる。
したがって、断熱層８０による外壁部分の熱流量の低減と、新設窓による壁開口部分の熱流量の低減とに加えて、壁と窓との連結部分の熱流量も低減でき、外壁全体の断熱性能を向上できる。このため、既設枠２や躯体１０側の温度低下を抑制でき、結露発生も防止できる。 (5) Since the new exterior material 30 is arranged on the outdoor side of the existing outer wall 1 and the new heat insulating material 31 is provided between the new exterior material 30 and the existing outer wall 1, the heat insulating performance of the outer wall portion can be improved. Further, since the new frame 4 arranged on the inner peripheral side of the opening of the existing frame 2 is made of resin, the heat insulation performance of the new frame 4 itself can be improved.
Further, the existing frame 2 is covered with the heat insulating layer 80 including the new heat insulating material 31 and the air layer 81 and the new frame 4, and the existing frame 2 is covered so as not to be exposed to the outside. The heat outflow through the can be reduced.
Therefore, in addition to reducing the heat flow rate of the outer wall portion by the heat insulating layer 80 and reducing the heat flow rate of the wall opening portion by the new window, the heat flow rate of the connecting portion between the wall and the window can also be reduced, and the heat insulating performance of the entire outer wall Can be improved. Therefore, it is possible to suppress the temperature decrease on the side of the existing frame 2 and the skeleton 10 and prevent the occurrence of dew condensation.

（６）新設枠４内に配置される新設障子５と、嵌め殺し窓の面材を、トリプルガラス４７、５７で構成しているので、面材部分の断熱性能を向上できる。さらに、新設障子５では、各框５１，５２，５３，５４を樹脂製としているので、框自体の断熱性能も向上でき、既設枠２内に配置される新設窓全体の断熱性能を向上できる。 (6) Since the new shoji 5 arranged in the new frame 4 and the face material of the fitting window are composed of the triple glasses 47 and 57, the heat insulating performance of the face material portion can be improved. Further, in the new shoji 5, since the frames 51, 52, 53, 54 are made of resin, the heat insulation performance of the frame itself can be improved and the heat insulation performance of the entire new window arranged in the existing frame 2 can be improved.

（７）トリプルガラス４７，５７のうち、少なくとも１枚のガラスを、見込み方向において断熱層８０に重なる位置に配置したので、断熱層８０で構成される断熱ラインの延長線上に、トリプルガラス４７，５７によって構成される面材の断熱ラインを配置できる。このため、新設断熱材３１、空気層８１を有する断熱層８０から新設枠４、新設障子５等に形成される断熱ラインを外壁面とほぼ平行に配置できる。
したがって、断熱ラインが外壁面に対して斜めに設定された場合に比べて、既設枠２を介した熱流量を低減でき、既設枠２の周囲の壁体内での結露の発生も抑制できる。 (7) Since at least one of the triple glasses 47, 57 is arranged at a position overlapping the heat insulating layer 80 in the prospective direction, the triple glass 47, 57 is formed on the extension line of the heat insulating line formed by the heat insulating layer 80. A heat insulating line of the face material constituted by 57 can be arranged. Therefore, the heat insulating line formed from the new heat insulating material 31, the heat insulating layer 80 having the air layer 81 to the new frame 4, the new shoji 5, etc. can be arranged substantially parallel to the outer wall surface.
Therefore, as compared with the case where the heat insulating line is set obliquely to the outer wall surface, the heat flow rate through the existing frame 2 can be reduced, and the occurrence of dew condensation in the wall body around the existing frame 2 can be suppressed.

（８）新設枠４の屋外側端部を、新設外装材３０の屋外面よりも屋外側に位置しているので、新設枠４と新設外装材３０とを対向させて配置でき、これらの間にバックアップ材６６、湿式シーリング材６７を充填してシールすることができる。このため、新設枠４を、新設外装材３０の見切り材として利用でき、一般的な納まり構造にできる。
また、新設外装材３０が設けられていない場合は、新設枠４と既設枠２とを繋ぐジョイント部材を設けて、新設枠４および既設枠２間の隙間を塞ぐ必要があるが、本実施形態では新設枠４および新設外装材３０間で通常のシール処理を行うことができ、新設枠４および既設枠２間を繋ぐジョイント部材は不要なため、納まりを簡略化できる。 (8) Since the outdoor side end of the new frame 4 is located on the outdoor side with respect to the outdoor surface of the new exterior material 30, the new frame 4 and the new exterior material 30 can be arranged so as to face each other. A backup material 66 and a wet sealing material 67 can be filled in and sealed. Therefore, the new installation frame 4 can be used as a parting material for the new installation exterior material 30, and a general housed structure can be achieved.
If the new exterior material 30 is not provided, it is necessary to provide a joint member that connects the new frame 4 and the existing frame 2 to close the gap between the new frame 4 and the existing frame 2. In this case, a normal sealing process can be performed between the new frame 4 and the new exterior material 30, and a joint member that connects the new frame 4 and the existing frame 2 is unnecessary, so that the installation can be simplified.

（９）新設外装材３０の屋外面から既設枠２の屋内端部までの見込み寸法を、新設外装材３０の屋外面から新設枠４の屋内端部までの見込み寸法よりも小さくしたので、既設枠２の内周面の全体を新設枠４で覆うことができ、断熱性能および意匠性を向上できる。 (9) Since the prospective dimension from the outdoor surface of the new exterior material 30 to the indoor end of the existing frame 2 is made smaller than the prospective dimension from the outdoor surface of the new exterior material 30 to the indoor end of the new frame 4, The entire inner peripheral surface of the frame 2 can be covered with the new frame 4, and the heat insulating performance and the design can be improved.

（10）新設枠４の外周面を見込み方向に沿った平面で形成したので、新設外装材３０や新設断熱材３１の厚さ寸法に応じて、新設枠４の屋内外方向の位置を自由に設定できる。したがって、新設外装材３０等の厚さ寸法が異なる場合でも、同一種類の新設枠４を用いることができ、新設枠４の種類を少なくできる。
また、新設枠４の屋内側端部から屋内方向に向かって突出された取付片４１１，４２１，４３１，４４１から躯体１０にネジ１５をねじ込んで新設枠４を固定しているので、開口内周側から新設枠４の取付作業を行うことができ、改装作業を容易に行うことができる。 (10) Since the outer peripheral surface of the new frame 4 is formed as a plane along the prospective direction, the position of the new frame 4 in the indoor and outdoor directions can be freely set according to the thickness dimension of the new exterior material 30 and the new heat insulating material 31. Can be set. Therefore, even if the thickness dimensions of the new exterior material 30 and the like are different, the same types of new frames 4 can be used, and the number of types of new frames 4 can be reduced.
Since the new frame 4 is fixed by screwing the screws 15 into the frame 10 from the mounting pieces 411, 421, 431, 441 projecting from the indoor side end of the new frame 4 toward the indoor direction, the inner circumference of the opening is fixed. The installation work of the new frame 4 can be performed from the side, and the renovation work can be easily performed.

（11）水切材６０は、新設上枠４１に取り付けられており、従来のように外壁下地材、胴縁、躯体等に取り付けられていないため、金属製の水切材６０と躯体１０側とが直接接触することがなく、水切材６０を介しての熱流量を低減でき、この点でも断熱性能を向上できる。特に、水切材６０の屋内側は、密閉された空気層８１で構成した断熱層８０であり、水切用防水シート７５も断熱性を有するため、水切材６０から既設上枠２１等への熱橋となる部材が設けられておらず、水切材６０から既設上枠２１への熱流量を低減できる。 (11) The draining material 60 is attached to the new upper frame 41, and is not attached to the outer wall base material, the furring strips, the skeleton, etc. as in the conventional case, so that the metal draining material 60 and the skeleton 10 side are There is no direct contact, and the heat flow rate through the drainage material 60 can be reduced, and in this respect also the heat insulation performance can be improved. Particularly, the indoor side of the water draining member 60 is the heat insulating layer 80 constituted by the air layer 81 that is closed, and the waterproof sheet 75 for draining water also has the heat insulating property. Therefore, the heat bridge from the water draining member 60 to the existing upper frame 21 or the like is Since no member is provided, the heat flow rate from the draining material 60 to the existing upper frame 21 can be reduced.

（12）水切材を外壁側に取り付けた場合には、新設外装材３０等の厚さ寸法に応じて複数種類の水切材を用意する必要があるが、本実施形態では、水切材６０は、新設上枠４１に取り付けられているので、新設上枠４１の屋外面を基準にして取り付けることができる。このため、新設外装材３０等の厚さ寸法が変わっても、水切材６０の種類は一種類にすることができる。
さらに、防水シート７１と水切材６０とは水切用防水シート７５で繋いでいるので、新設外装材３０の厚さ寸法が変化して、防水シート７１と水切材６０との間隔が変化しても、水切用防水シート７５の長さ寸法等で容易に調整できる。 (12) When the draining material is attached to the outer wall side, it is necessary to prepare a plurality of types of draining materials according to the thickness dimension of the new exterior material 30 and the like, but in the present embodiment, the draining material 60 is Since it is attached to the new upper frame 41, it can be attached with reference to the outdoor surface of the new upper frame 41. Therefore, even if the thickness dimension of the new exterior material 30 or the like changes, the number of types of the draining material 60 can be one.
Further, since the waterproof sheet 71 and the draining material 60 are connected by the draining waterproof sheet 75, even if the thickness dimension of the new exterior material 30 changes and the distance between the waterproof sheet 71 and the draining material 60 changes. The length can be adjusted easily by adjusting the length of the waterproof sheet 75 for draining.

［第２実施形態］
次に、本発明の第２実施形態を図４に基づいて説明する。なお、第２実施形態は、改装用ではなく新築用の建物開口部の上部排水構造であり、既設外壁１や既設枠２が設けられていない点が第１実施形態と相違するが、その他の構成は第１実施形態と同じであるため、対応する構成には同一符号を付し説明を省略する。 [Second Embodiment]
Next, a second embodiment of the present invention will be described based on FIG. The second embodiment is an upper drainage structure of a building opening for new construction, not for renovation, and is different from the first embodiment in that the existing outer wall 1 and the existing frame 2 are not provided, but other Since the configuration is the same as that of the first embodiment, the corresponding components are designated by the same reference numerals and the description thereof is omitted.

第２実施形態の躯体１０の屋外側には、新設断熱材３１、胴縁３２、新設外装材３０が配置されている。また、躯体１０で囲まれた開口部には、新設枠４がネジ１５で固定され、新設枠４内には新設障子５が開閉可能に設けられている。   On the outdoor side of the body 10 of the second embodiment, a new heat insulating material 31, a furring strip 32, and a new exterior material 30 are arranged. Further, a new frame 4 is fixed to the opening surrounded by the frame 10 with a screw 15, and a new shoji 5 is provided in the new frame 4 so as to be opened and closed.

新設断熱材３１の屋内側に位置する躯体１０の表面には、気密防水シート７３が貼られている。気密防水シート７３の開口側端縁は、躯体１０の内周面に沿って屋内側に折り込まれ、調整部材４１５や取付片４１１の屋内面に沿って折り曲げられ、さらに取付片４１１の内周面に両面テープなどで貼り付けられている。
第２実施形態では、新設外装材３０の屋内側に配置されて防水層を構成する防水シートと、防水層から新設枠４までを塞ぐ気密防水シートとを一体の気密防水シート７３で構成している。すなわち、防水層を構成する気密防水シート７３の一部を、防水層から新設枠４までを塞ぐ気密防水シートとして利用している。このため、気密防水シート７３によって、新設外装材３０の屋内側から新設枠４まで連続する防水ラインが構成される。 An airtight waterproof sheet 73 is attached to the surface of the body 10 located on the indoor side of the new heat insulating material 31. The opening-side edge of the airtight waterproof sheet 73 is folded toward the indoor side along the inner peripheral surface of the body 10, is bent along the indoor surfaces of the adjusting member 415 and the mounting piece 411, and further the inner peripheral surface of the mounting piece 411. It is pasted on with double-sided tape.
In the second embodiment, a waterproof sheet that is disposed on the indoor side of the new exterior member 30 to form a waterproof layer and an airtight waterproof sheet that covers the waterproof layer to the new frame 4 are configured as an integrated airtight waterproof sheet 73. There is. That is, a part of the airtight waterproof sheet 73 that constitutes the waterproof layer is used as an airtight waterproof sheet that covers from the waterproof layer to the new frame 4. Therefore, the airtight waterproof sheet 73 constitutes a waterproof line that extends from the indoor side of the new exterior member 30 to the new frame 4.

また、気密防水シート７３から水切材６０まで、第１実施形態と同様に水切用防水シート７５が設けられている。
水切用防水シート７５の屋内側端部は、新設断熱材３１の裏面側において、前記気密防水シート７３の表面（屋外面）に両面テープなどで貼り付けられ、気密防水シート７３に連続して設けられている。
水切用防水シート７５の屋外側端部は、水切用防水シート７５の屋内側端部よりも低い位置で、水切材６０の傾斜部６３の表面に両面テープなどで貼られている。このため、水切用防水シート７５は、屋内側端部で気密防水シート７３に連続して設けられ、この屋内型端部から屋外側端部に向かって、水切用防水シート７５の表面が下り勾配となるように設けられている。
したがって、新設断熱材３１および躯体１０間に浸入した雨水は、気密防水シート７３に沿って流れ、水切用防水シート７５から水切材６０の傾斜部６３上に流れ、水抜き部品６８から屋外側に排水される。
また、第１実施形態と同じく、水切用防水シート７５および気密防水シート７３で空気層８１が区画され、新設断熱材３１とともに断熱層８０を構成している。 Further, from the airtight waterproof sheet 73 to the draining material 60, a draining waterproof sheet 75 is provided as in the first embodiment.
The indoor end of the waterproof sheet 75 for draining is attached to the surface (outdoor surface) of the airtight waterproof sheet 73 by a double-sided tape or the like on the back side of the new heat insulating material 31, and is provided continuously to the airtight waterproof sheet 73. Has been.
The outdoor side end of the drainage waterproof sheet 75 is lower than the indoor side end of the drainage waterproof sheet 75, and is attached to the surface of the inclined portion 63 of the drainage member 60 with a double-sided tape or the like. Therefore, the draining waterproof sheet 75 is continuously provided at the indoor side end portion to the airtight waterproof sheet 73, and the surface of the draining waterproof sheet 75 descends downward from the indoor type end portion to the outdoor side end portion. It is provided so that.
Therefore, the rainwater that has entered between the new heat insulating material 31 and the body 10 flows along the airtight waterproof sheet 73, flows from the draining waterproof sheet 75 onto the inclined portion 63 of the draining material 60, and from the draining component 68 to the outdoor side. Be drained.
Further, as in the first embodiment, the air layer 81 is partitioned by the water drainage waterproof sheet 75 and the airtight waterproof sheet 73, and constitutes the heat insulating layer 80 together with the new heat insulating material 31.

［第２実施形態の作用効果］
第２実施形態では、防水層となる気密防水シート７３を新設枠４に貼り付けて防水ラインを構成しているので、前記第１実施形態と同様の作用効果を奏することができる。 [Operation and effect of the second embodiment]
In the second embodiment, since the airtight waterproof sheet 73, which serves as a waterproof layer, is attached to the new frame 4 to form the waterproof line, the same operational effect as the first embodiment can be obtained.

［第３実施形態］
次に、本発明の第３実施形態を図５に基づいて説明する。なお、第３実施形態は、新築用の建物開口部の防水構造である点で第２実施形態と同じであるが、新設断熱材は設けられておらず、また、水切材６０の代わりに樋状の排水用部材９０を取り付けた点が相違する。なお、第１，２実施形態と対応する構成には同一符号を付し説明を省略する。 [Third Embodiment]
Next, a third embodiment of the present invention will be described based on FIG. Note that the third embodiment is the same as the second embodiment in that it is a waterproof structure of a building opening for new construction, but no new heat insulating material is provided, and a drain gutter 60 is used instead. The difference is that a drainage member 90 having a circular shape is attached. The components corresponding to those in the first and second embodiments are designated by the same reference numerals and the description thereof will be omitted.

第３実施形態は、躯体１０の屋外側には胴縁３２、新設外装材３０が配置されている。また、躯体１０で囲まれた開口部には、新設枠４がネジ１５で固定され、新設枠４内には新設障子５が開閉可能に設けられている。   In the third embodiment, a furring strip 32 and a new exterior material 30 are arranged on the outdoor side of the body 10. Further, a new frame 4 is fixed to the opening surrounded by the frame 10 with a screw 15, and a new shoji 5 is provided in the new frame 4 so as to be opened and closed.

新設外装材３０の屋内側に位置する躯体１０や図示略の下地材の表面には、気密防水シート７３が貼られている。気密防水シート７３の開口側端縁は、躯体１０の内周面に沿って屋内側に折り込まれ、調整部材４１５や取付片４１１の屋内面に沿って折り曲げられ、さらに取付片４１１の内周面に両面テープなどで貼り付けられている。   An airtight waterproof sheet 73 is attached to the surface of the skeleton 10 located on the indoor side of the new exterior material 30 and the surface of a base material (not shown). The opening-side edge of the airtight waterproof sheet 73 is folded toward the indoor side along the inner peripheral surface of the body 10, is bent along the indoor surfaces of the adjusting member 415 and the mounting piece 411, and further the inner peripheral surface of the mounting piece 411. It is pasted on with double-sided tape.

躯体１０の屋外面に貼られた気密防水シート７３には、排水用部材９０が取り付けられている。排水用部材９０は、屋内壁部９１と、屋外壁部９２と、屋内壁部９１および屋外壁部９２間を連結する底面部９３とを備える。
屋内壁部９１は、ネジ１６により、気密防水シート７３および躯体１０に固定されている。また、気密防水シート７３および屋内壁部９１に跨がって防水テープ９６が貼られている。 A drainage member 90 is attached to the airtight waterproof sheet 73 attached to the outdoor surface of the body 10. The drainage member 90 includes an indoor wall portion 91, an outdoor wall portion 92, and a bottom surface portion 93 that connects the indoor wall portion 91 and the outdoor wall portion 92.
The indoor wall portion 91 is fixed to the airtight waterproof sheet 73 and the body 10 with the screws 16. Further, a waterproof tape 96 is attached across the airtight waterproof sheet 73 and the indoor wall portion 91.

新設外装材３０と新設上枠４１との間は、湿式シーリング材６７が充填されている。この際、湿式シーリング材６７が、新設外装材３０、新設上枠４１だけでなく、排水用部材９０にも接着すると三面接着となり耐久性が低下する。このため、屋外壁部９２の屋外面には、湿式シーリング材６７の接着を防止するボンドブレーカーテープ９５が貼られている。   A wet sealing material 67 is filled between the new exterior material 30 and the new upper frame 41. At this time, if the wet sealing material 67 adheres not only to the newly installed exterior material 30 and the newly installed upper frame 41, but also to the drainage member 90, three-sided adhesion will occur and the durability will deteriorate. For this reason, a bond breaker tape 95 is attached to the outdoor surface of the outdoor wall portion 92 to prevent adhesion of the wet sealing material 67.

新設外装材３０および気密防水シート７３間に浸入した水は、気密防水シート７３から防水テープ９６を介して排水用部材９０に流れ、排水用部材９０の両端部等から新設枠４の外周側に設けられる排水通路などを介して屋外に排出される。   The water that has entered between the new exterior member 30 and the airtight waterproof sheet 73 flows from the airtight waterproof sheet 73 through the waterproof tape 96 to the drainage member 90, and from both ends of the drainage member 90 to the outer peripheral side of the new frame 4. It is discharged outdoors through the provided drainage passage.

［第３実施形態の作用効果］
第３実施形態によれば、防水層から新設枠４まで連続する気密防水シート７３によって防水ラインが構成されるため、前記第１，２実施形態と同様の作用効果を奏することができる。
また、新設枠４を交換する場合に、気密防水シート７３や排水用部材９０は壁側に残しておくことができるので、交換作業を容易に行うことができる。 [Operation and effect of the third embodiment]
According to the third embodiment, since the waterproof line is constituted by the airtight waterproof sheet 73 that continues from the waterproof layer to the new frame 4, it is possible to achieve the same effect as the first and second embodiments.
Further, when the new frame 4 is replaced, the airtight waterproof sheet 73 and the drain member 90 can be left on the wall side, so that the replacement work can be easily performed.

［変形例］
なお、本発明は以上の実施形態で説明した構成のものに限定されず、本発明の目的を達成できる範囲での変形例は、本発明に含まれる。 [Modification]
Note that the present invention is not limited to the configurations described in the above embodiments, and modifications within a range in which the object of the present invention can be achieved are included in the present invention.

前記第１実施形態では、防水層を構成する防水シート７１と、気密防水シート７２とを別体の防水シートで構成していたが、第２，３実施形態と同様に、既設外壁１の屋外面から新設枠４まで、一体の気密防水シート７３を配置してもよい。同様に、前記第２，３実施形態では、第１実施形態と同様に、躯体１０の屋外面に貼られて防水層を形成する防水シート７１と、防水層から新設枠４まで貼られる防水シート７１とは別体の気密防水シート７２とを配置してもよい。   In the first embodiment, the waterproof sheet 71 that constitutes the waterproof layer and the airtight waterproof sheet 72 are configured as separate waterproof sheets. However, similar to the second and third embodiments, the exterior of the existing outer wall 1 is outdoors. An integral airtight waterproof sheet 73 may be arranged from the surface to the new installation frame 4. Similarly, in the second and third embodiments, similar to the first embodiment, a waterproof sheet 71 that is attached to the outdoor surface of the body 10 to form a waterproof layer, and a waterproof sheet that is attached from the waterproof layer to the new frame 4 An airtight waterproof sheet 72, which is separate from 71, may be arranged.

気密防水シート７２、７３は、新設枠４の屋内端縁を介して内周側に折り返して新設枠４に貼られていたが、新設枠４の外周面に貼り付けてもよい。
新設枠４は、樹脂製に限定されず、木製でもよく、アルミ製および樹脂製の複合枠でもよく、さらには一般的なアルミ枠でもよく、新設枠４に求められる断熱性能に応じて選択すればよい。 The airtight waterproof sheets 72 and 73 are attached to the outer peripheral surface of the new installation frame 4 by being folded back to the inner peripheral side through the indoor edge of the new installation frame 4 and attached to the new installation frame 4.
The new frame 4 is not limited to being made of resin, and may be made of wood, a composite frame made of aluminum and resin, or a general aluminum frame, and may be selected according to the heat insulation performance required for the new frame 4. Good.

前記実施形態では、新設枠４の外周面を平面としていたが、釘ヒレが突設された構造としてもよい。この場合、既設枠２に釘ヒレを当接させて位置決めできる場合は、釘ヒレを残したままで新設枠４を取り付けることができるが、釘ヒレによって位置決めできない場合は、施工現場で釘ヒレを切断する必要がある。したがって、前記各実施形態のように、新設枠４の外周面を平面としたほうが、施工作業が容易になる利点がある。   In the above embodiment, the outer peripheral surface of the new installation frame 4 is a flat surface, but it may be a structure in which nail fins are provided in a protruding manner. In this case, if the nail fin can be brought into contact with the existing frame 2 for positioning, the new frame 4 can be attached with the nail fin remaining, but if the nail fin cannot be positioned, the nail fin is cut at the construction site. There is a need to. Therefore, when the outer peripheral surface of the new installation frame 4 is made flat as in each of the above-described embodiments, there is an advantage that the construction work becomes easier.

新設外装材３０の屋外面から新設枠４の屋内側端部までの長さ寸法を、新設外装材３０の屋外面から既設枠２の屋内側端部までの長さ寸法よりも小さく設定してもよい。この場合、既設枠２の屋内端部は新設枠４で覆うことができないため、新設額縁３６等で覆えば良い。   The length dimension from the outdoor surface of the new exterior material 30 to the indoor side end portion of the new frame 4 is set smaller than the length dimension from the outdoor surface of the new exterior material 30 to the indoor side edge portion of the existing frame 2. Good. In this case, since the indoor end of the existing frame 2 cannot be covered with the new frame 4, it may be covered with the new frame 36 or the like.

新設窓の面材としては、トリプルガラス４７、５７に限定されず、複層ガラス（二重ガラス）でもよく、一般的な単板ガラスでもよく、これらも新設窓に求められる断熱性能に応じて選択すればよい。   The face material of the new window is not limited to the triple glass 47, 57, and may be double-layer glass (double glass) or general single plate glass, and these are also selected according to the heat insulation performance required for the new window. do it.

新設窓としては、前述した縦すべり出し窓とＦＩＸ窓との連窓に限定されず、引違い窓、片上げ下げ窓、ＦＩＸ窓、縦すべり出し窓、すべり出し窓等の単窓や、これらを組み合わせた連窓、段窓などでもよい。すなわち、新設窓は、新設枠４も改装するため、様々な種類の窓を適用できる。   The new window is not limited to the continuous window of the vertical sliding window and the FIX window described above, but may be a single window such as a sliding window, a single-raising / lowering window, a FIX window, a vertical sliding window, a sliding window, or a combination of these. It may be a window or a stepped window. That is, since the new installation frame 4 is also refurbished, various types of windows can be applied to the new installation window.

１…既設外壁、２…既設枠、３…新設外壁、４…新設枠、５…新設障子、１０…躯体、１５…ネジ、３０…新設外装材、６７…屋外側シール材である湿式シーリング材、７１…防水層である防水シート、７２…気密防水シート、７３…防水層を兼用する気密防水シート、７５…水切用防水シート、４１１、４２１、４３１、４４１…取付片。   DESCRIPTION OF SYMBOLS 1 ... Existing outer wall, 2 ... Existing frame, 3 ... New outer wall, 4 ... New frame, 5 ... New shoji, 10 ... Body, 15 ... Screw, 30 ... New exterior material, 67 ... Wet sealing material which is an outdoor side sealing material , 71 ... waterproof sheet which is a waterproof layer, 72 ... airtight waterproof sheet, 73 ... airtight waterproof sheet which also serves as a waterproof layer, 75 ... waterproof sheet for draining water, 411, 421, 431, 441 ... mounting piece.

Claims (6)

建物の外壁に形成されて窓枠が配置される建物開口部の防水構造であって、
前記外壁は、外装材と、前記外装材の屋内面側に設けられた防水層とを備え、
前記窓枠と前記外装材との間を塞ぐ屋外側シール材と、
前記防水層に連続して設けられて前記窓枠に貼り付けられた気密防水シートとを備え、
前記窓枠の屋内側端部には、屋内側に突出された取付片が形成され、
前記気密防水シートは、前記窓枠の外周側から前記取付片の屋内面に沿って折り曲げられ、さらに前記取付片の内周面に沿って屋外側に折り返されて前記取付片の内周面に貼り付けられている
ことを特徴とする建物開口部の防水構造。 A waterproof structure of a building opening in which a window frame is formed on the outer wall of the building,
The outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material,
An outdoor side sealing material that closes between the window frame and the exterior material,
An airtight waterproof sheet that is continuously provided on the waterproof layer and is attached to the window frame ,
At the indoor side end portion of the window frame, a mounting piece protruding toward the indoor side is formed,
The airtight waterproof sheet is bent from the outer peripheral side of the window frame along the indoor surface of the mounting piece, and further folded back to the outdoor side along the inner peripheral surface of the mounting piece to be attached to the inner peripheral surface of the mounting piece. A waterproof structure of the building opening, which is characterized by being attached . 建物の外壁に形成されて窓枠が配置される建物開口部の防水構造であって、
前記外壁は、外装材と、前記外装材の屋内面側に設けられた防水層とを備え、
前記窓枠と前記外装材との間を塞ぐ屋外側シール材と、
前記防水層に連続して設けられて前記窓枠に貼り付けられた気密防水シートとを備え、
前記建物開口部は、既設枠の内周面で形成され、
前記窓枠は、既設枠の内周側に配置された新設枠であり、
前記外装材は、既設外壁の屋外側に配置された新設外装材であり、
前記既設外壁と前記新設外装材との間には防水シートで構成された防水層が設けられ、
前記気密防水シートは、前記防水シートの一部、または、前記防水シートに連続する別体の気密防水シートで構成されている
ことを特徴とする建物開口部の防水構造。 A waterproof structure of a building opening in which a window frame is formed on the outer wall of the building,
The outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material,
An outdoor side sealing material that closes between the window frame and the exterior material,
An airtight waterproof sheet that is continuously provided on the waterproof layer and is attached to the window frame,
The building opening is formed on the inner peripheral surface of the existing frame,
The window frame is a new frame arranged on the inner peripheral side of the existing frame,
The exterior material is a new exterior material arranged on the outdoor side of the existing outer wall,
A waterproof layer formed of a waterproof sheet is provided between the existing outer wall and the new exterior material,
The waterproof structure for a building opening, wherein the airtight waterproof sheet is formed of a part of the waterproof sheet or a separate airtight waterproof sheet continuous with the waterproof sheet. 請求項１または請求項２に記載の建物開口部の防水構造において、
前記気密防水シートは、可撓性を有することを特徴とする建物開口部の防水構造。 In the waterproof structure of the building opening according to claim 1 or 2 ,
The airtight waterproof sheet is flexible, and has a waterproof structure for a building opening. 請求項１から請求項３のいずれか一項に記載の建物開口部の防水構造において、
前記気密防水シートは、水により膨潤する特性を有することを特徴とする建物開口部の防水構造。 The waterproof structure for a building opening according to any one of claims 1 to 3 ,
The airtight waterproof sheet has a property of swelling with water, and is a waterproof structure for a building opening. 建物の外壁に形成されて窓枠が配置される建物開口部の防水構造の施工方法であって、
前記外壁を構成する外装材の屋内面側に防水層を設ける工程と、
前記建物開口部の周囲において、前記防水層に連続する気密防水シートの屋外側端部を貼り付ける工程と、
前記気密防水シートを前記建物開口部の内周面に沿って配置する工程と、
前記建物開口部内に前記窓枠を配置する工程と、
前記窓枠の屋内側端部に形成された取付片に、前記気密防水シートの屋内側端部を、前記窓枠の外周側から前記取付片の屋内面に沿って折り曲げ、さらに前記取付片の内周面に沿って屋外側に折り返して前記取付片の内周面に貼り付ける工程と、
を有することを特徴とする建物開口部の防水構造の施工方法。 A method of constructing a waterproof structure for a building opening, in which a window frame is formed on the outer wall of the building,
A step of providing a waterproof layer on the indoor surface side of the exterior material forming the outer wall;
Around the building opening, a step of attaching an outdoor side end of an airtight waterproof sheet that is continuous with the waterproof layer,
Arranging the airtight waterproof sheet along the inner peripheral surface of the building opening,
Placing the window frame in the building opening,
To the mounting piece formed on the indoor side end of the window frame, bend the indoor side end of the airtight waterproof sheet along the indoor surface of the mounting piece from the outer peripheral side of the window frame, and further A step of folding back to the outdoor side along the inner peripheral surface and attaching it to the inner peripheral surface of the mounting piece ,
A method for constructing a waterproof structure for a building opening, which comprises: 既設枠の内周面で形成されて新設枠が配置される建物開口部の防水構造の施工方法であって、  A method of constructing a waterproof structure for a building opening, in which a new frame is formed on the inner peripheral surface of an existing frame,
既設外壁の屋外側に防水シートで構成された防水層を設ける工程と、  A step of providing a waterproof layer composed of a waterproof sheet on the outdoor side of the existing outer wall,
前記建物開口部の周囲において、前記防水層に連続する気密防水シートの屋外側端部を貼り付ける工程と、  Around the building opening, a step of attaching an outdoor side end of an airtight waterproof sheet that is continuous with the waterproof layer,
前記気密防水シートを前記建物開口部の内周面に沿って配置する工程と、  Arranging the airtight waterproof sheet along the inner peripheral surface of the building opening,
前記建物開口部内に前記新設枠を配置する工程と、  Arranging the new frame in the building opening,
前記新設枠の屋内側の部位に、前記気密防水シートの屋内側端部を貼り付ける工程と、  A step of attaching an indoor side end of the airtight waterproof sheet to a site on the indoor side of the new frame,
前記既設外壁の屋外側に新設外装材を配置する工程と、  Arranging a new exterior material on the outdoor side of the existing outer wall,
を有することを特徴とする建物開口部の防水構造の施工方法。  A method for constructing a waterproof structure for a building opening, which comprises:
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