JP6889528B2 - Roof structure and roofing material - Google Patents

Roof structure and roofing material Download PDF

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JP6889528B2
JP6889528B2 JP2016139729A JP2016139729A JP6889528B2 JP 6889528 B2 JP6889528 B2 JP 6889528B2 JP 2016139729 A JP2016139729 A JP 2016139729A JP 2016139729 A JP2016139729 A JP 2016139729A JP 6889528 B2 JP6889528 B2 JP 6889528B2
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roofing material
roof
water
corner ridge
underwater
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JP2018009390A (en
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敏浩 岸田
敏浩 岸田
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Asahi Kasei Homes Corp
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Description

本発明は、屋根構造及びこの屋根構造に用いられる屋根材に関する。 The present invention relates to a roof structure and a roofing material used for this roof structure.

従来から、屋根構造の上面を構成する屋根材の隙間等から屋根構造の内部に浸入した雨水を、屋根材の内側に設けられた防水層上に流し、軒先等から外部に排水する屋根構造が知られている。 Conventionally, there has been a roof structure in which rainwater that has entered the inside of the roof structure through gaps in the roof material that constitutes the upper surface of the roof structure is allowed to flow onto the waterproof layer provided inside the roof material and drained from the eaves to the outside. Are known.

特許文献1には、焼成粘土瓦を予め工場で切断して製造したプレカット粘土瓦が開示されている。特許文献1に記載のプレカット粘土瓦には、隅切落しが形成されている。また、特許文献1には、この隅切落しが、屋根に葺き上げ時において、他のプレカット粘土瓦又は粘土瓦等の瓦と積層した箇所の一部を切断した構成とすることが記載されている。 Patent Document 1 discloses a pre-cut clay roof tile manufactured by cutting a fired clay roof tile in advance at a factory. The pre-cut clay roof tile described in Patent Document 1 has a corner cut off. Further, Patent Document 1 describes that the corner cut-off has a structure in which a part of a portion laminated with another pre-cut clay roof tile or a roof tile such as a clay roof tile is cut off when the roof is roofed. There is.

また、特許文献2には、屋根構造として、幅方向における片側略半部に山部、他側略半部に谷部がそれぞれ形成された非対称断面の波形瓦を勾配屋根面上に葺設する屋根葺き構造が記載されている。また、特許文献2に記載の波形瓦には、流れ方向の水下側から水上側に向かって左側に谷部、右側に山部が形成された「谷山タイプ」の波形瓦と、左側に山部、右側に谷部が形成された「山谷タイプ」の波形瓦との2種類が記載されている。そして、特許文献2には、屋根面の各段ごとに、ひとつの段には上述した「谷山タイプ」の波形瓦を一定方向に葺き重ね、その上段には上述した「山谷タイプ」の波形瓦を上記下段の葺き重ね方向と同じ方向に葺き重ねることにより、波形瓦の山部及び谷部を流れ方向に揃えつつ、各段の葺き重ね部が千鳥となるように波形瓦を葺設することが記載されている。 Further, in Patent Document 2, as a roof structure, a corrugated roof tile having an asymmetric cross section in which a mountain portion is formed in a substantially half portion on one side and a valley portion is formed in a substantially half portion on the other side in the width direction is laid on a sloped roof surface. The roofing structure is described. Further, the corrugated roof tiles described in Patent Document 2 include a "valley mountain type" corrugated roof tile in which a valley portion is formed on the left side and a mountain portion is formed on the right side from the underwater side to the water upper side in the flow direction, and a mountain on the left side. Two types are described: a "mountain valley type" corrugated roof tile with a valley on the right side. Then, in Patent Document 2, for each step of the roof surface, the above-mentioned "Taniyama type" corrugated roof tile is laid on one step in a certain direction, and the above-mentioned "Yamatani type" corrugated roof tile is on the upper step. By stacking the roof tiles in the same direction as the lower roof tiles, the corrugated roof tiles are laid out so that the roof tiles of each stage are staggered while aligning the peaks and valleys of the corrugated roof tiles in the flow direction. Is described.

特開2004−225391号公報Japanese Unexamined Patent Publication No. 2004-225391 特開2013−151792号公報Japanese Unexamined Patent Publication No. 2013-151792

ところで、屋根材の内側に設けられる防水層には、屋根材を固定するためのビスや釘等が貫通しているため、この貫通孔を通じて雨水が建物の内部に浸水するおそれがある。特に、勾配屋根の屋根面同士の繋ぎ目である隅棟では、雨水が屋根材の内側に入り込み易い。そのため、雨水が屋根材の内側に浸入することを防ぐ雨仕舞い設けることが求められる。 By the way, since the waterproof layer provided inside the roofing material is penetrated by screws, nails and the like for fixing the roofing material, rainwater may infiltrate the inside of the building through the through hole. In particular, in the corner ridge, which is a joint between the roof surfaces of a sloped roof, rainwater easily enters the inside of the roofing material. Therefore, it is required to provide a rain cover to prevent rainwater from entering the inside of the roofing material.

特許文献1のプレカット粘土瓦を用いた屋根構造によれば、隅切落しを設けることで、上のプレカット粘土瓦の上面を流れる雨水を、積層した下のプレカット粘土瓦の上面上に流すことができるため、雨水が屋根材としてのプレカット粘土瓦の内側に浸入し難くなる。しかしながら、このような屋根構造であっても、雨水が屋根材の内側に浸入することを完全に防ぐことはできない。 According to the roof structure using the pre-cut clay roof tile of Patent Document 1, by providing the corner cut-off, the rainwater flowing on the upper surface of the upper pre-cut clay roof tile can flow on the upper surface of the laminated lower pre-cut clay roof tile. This makes it difficult for rainwater to enter the inside of pre-cut clay roof tiles as roofing materials. However, even with such a roof structure, it is not possible to completely prevent rainwater from entering the inside of the roofing material.

そのため、特許文献2の屋根構造のように、屋根材の内側に浸入した雨水を、水下側で再び屋根材の外側に排水することが考えられるが、特許文献2に記載の屋根構造は、1つの屋根面内でのみ適用可能な構成であり、隅棟近傍に適用可能な構成ではない。 Therefore, like the roof structure of Patent Document 2, it is conceivable that the rainwater that has entered the inside of the roof material is drained to the outside of the roof material again on the underwater side. It is a configuration that can be applied only within one roof surface, and is not a configuration that can be applied near the corner ridge.

そこで本発明は、隅棟の近傍において屋根材の内側に浸入した雨水を外部に排水可能な屋根構造、及びこの屋根構造に利用可能な屋根材を提供することを目的とするものである。 Therefore, an object of the present invention is to provide a roof structure capable of draining rainwater that has entered the inside of the roof material to the outside in the vicinity of the corner ridge, and a roof material that can be used for this roof structure.

本発明の第1の態様としての屋根構造は、隅棟が形成された勾配屋根の屋根構造であって、前記隅棟に沿って配置された第1屋根材及び第2屋根材を備え、前記第1屋根材は、前記第2屋根材に一部を重ねた状態で水上側に配置されており、前記第1屋根材の鉛直方向下側には、前記隅棟側に雨水を誘導可能な誘導路が設けられ、前記誘導路の排出口は、前記第2屋根材の上面に対して鉛直方向上側の位置に形成されていることを特徴とするものである。 The roof structure as the first aspect of the present invention is a roof structure of a sloped roof in which a corner ridge is formed, and includes a first roofing material and a second roofing material arranged along the corner ridge. The first roofing material is arranged on the water upper side in a state where a part of the first roofing material is overlapped with the second roofing material, and rainwater can be guided to the corner ridge side on the lower side in the vertical direction of the first roofing material. A guide path is provided, and the discharge port of the guide path is formed at a position on the upper side in the vertical direction with respect to the upper surface of the second roofing material.

本発明の1つの実施形態として、前記誘導路は、前記第1屋根材又は前記第2屋根材の一部により形成されていることが好ましい。 As one embodiment of the present invention, it is preferable that the guide path is formed of the first roofing material or a part of the second roofing material.

本発明の1つの実施形態として、前記第1屋根材は、水下側の端部に、先端が水上側を向くように折り返された水下側折り返し部を備え、前記第2屋根材は、水上側の端部に、先端が水下側を向くように折り返され、前記水下側折り返し部と係合する水上側折り返し部を備え、前記誘導路は、前記水下側折り返し部により形成されていることが好ましい。 As one embodiment of the present invention, the first roofing material includes a underwater folded portion at an end portion on the underwater side so that the tip faces the upper side of the water, and the second roofing material comprises a folded portion on the underwater side. The water upper end portion is provided with a water upper folded portion that is folded so that the tip faces the water lower side and engages with the water lower folded portion, and the guide path is formed by the water lower folded portion. Is preferable.

本発明の1つの実施形態として、前記第1屋根材は、前記隅棟側に位置する第1外縁部を備え、前記第2屋根材は、前記隅棟側に位置する第2外縁部を備え、鉛直方向上側から見た場合に、前記第2外縁部の水上側の端部は、前記第1外縁部の水下側の端部よりも、前記隅棟の近くに位置し、前記排出口は、前記第1外縁部の水下側の端部の位置に形成されていることが好ましい。 As one embodiment of the present invention, the first roofing material includes a first outer edge portion located on the corner ridge side, and the second roofing material includes a second outer edge portion located on the corner ridge side. When viewed from the upper side in the vertical direction, the water upper end of the second outer edge portion is located closer to the corner ridge than the water lower end of the first outer edge portion, and the discharge port is located. Is preferably formed at the position of the lower end of the first outer edge.

本発明の1つの実施形態としての屋根構造は、前記隅棟を覆う棟包を備え、前記誘導路の前記排出口は、前記棟包に覆われた位置に形成されていることが好ましい。 It is preferable that the roof structure as one embodiment of the present invention includes a ridge covering the corner ridge, and the outlet of the guide path is formed at a position covered by the ridge.

本発明の1つの実施形態として、前記第1屋根材及び前記第2屋根材は、金属により形成されていることが好ましい。 As one embodiment of the present invention, it is preferable that the first roofing material and the second roofing material are made of metal.

本発明の第2の態様としての屋根材は、勾配屋根の隅棟に沿って複数配置することが可能な屋根材であって、水上側に向かって、鉛直方向上側に一部を重ねた状態で連続して配置することが可能であり、連続して配置した状態において、水上側の屋根材の鉛直方向下側に、前記隅棟側に雨水を誘導可能な誘導路が形成され、前記誘導路の排出口が、前記水上側の屋根材の水下側で隣接する屋根材の上面に対して鉛直方向上側の位置に形成されることを特徴とするものである。 The roofing material as the second aspect of the present invention is a roofing material that can be arranged in a plurality along the corner ridge of the sloped roof, and is in a state where a part of the roofing material is overlapped on the upper side in the vertical direction toward the water side. In the state where the roofing materials are continuously arranged, a guide path capable of guiding rainwater is formed on the corner ridge side on the lower side in the vertical direction of the roofing material on the water side, and the guidance is provided. The outlet of the road is formed at a position on the upper side in the vertical direction with respect to the upper surface of the adjacent roofing material on the underwater side of the roofing material on the water side.

本発明によれば、隅棟の近傍において屋根材の内側に浸入した雨水を外部に排水可能な屋根構造、及びこの屋根構造に利用可能な屋根材を提供することができる。 According to the present invention, it is possible to provide a roof structure capable of draining rainwater that has entered the inside of the roof material to the outside in the vicinity of the corner ridge, and a roof material that can be used for this roof structure.

本発明に係る屋根構造を備える建物を示す図である。It is a figure which shows the building which has the roof structure which concerns on this invention. 図1のI−I断面図である。FIG. 1 is a cross-sectional view taken along the line II of FIG. 図3(a)は図2に示す屋根材の単体を、厚み方向から見た平面図であり、図3(b)は、図2に示す屋根材の単体を、厚み方向と直交する方向から見た側面図である。FIG. 3A is a plan view of the single roofing material shown in FIG. 2 as viewed from the thickness direction, and FIG. 3B is a plan view of the single roofing material shown in FIG. 2 from the direction orthogonal to the thickness direction. It is a side view as seen. 屋根勾配の傾斜方向に沿って連続して配置された図3に示す屋根材を傾斜方向に沿い屋根面と略直交する断面で見た断面図である。FIG. 5 is a cross-sectional view of the roofing materials shown in FIG. 3, which are continuously arranged along the slope direction of the roof slope, as viewed in a cross section substantially orthogonal to the roof surface along the slope direction. 屋根材同士を傾斜方向に連続して配設する方法の概要を示す図である。It is a figure which shows the outline of the method of arranging roofing materials continuously in an inclined direction. 屋根勾配の傾斜方向に沿って連続して配置された図3に示す屋根材についての、隅棟近傍での納まりを示す平面図である。FIG. 5 is a plan view showing the fit of the roofing materials shown in FIG. 3, which are continuously arranged along the slope direction of the roof slope, in the vicinity of the corner ridge.

以下、本発明に係る屋根構造及びこの屋根構造に利用可能な屋根材の実施形態について、図1〜図6を参照して説明する。なお、各図において共通の部位、部材には、同一の符号を付している。 Hereinafter, an embodiment of the roof structure according to the present invention and the roofing material that can be used for the roof structure will be described with reference to FIGS. 1 to 6. In addition, the same reference numerals are given to common parts and members in each figure.

図1は、本発明に係る屋根構造の一実施形態としての屋根構造1を備える建物100の概略を示す図である。建物100は、例えば鉄骨造の軸組みを有する2階建ての工業化住宅であり、地盤に固定された鉄筋コンクリート基礎(不図示)と、柱や梁などの軸組部材で構成された軸組架構を有し、鉄筋コンクリート基礎に固定された上部構造体101と、で構成される。なお、軸組架構を構成する軸組部材は、予め規格化(標準化)されたものであり、予め工場にて製造されたのち建築現場に搬入されて組み立てられる。 FIG. 1 is a diagram showing an outline of a building 100 including a roof structure 1 as an embodiment of the roof structure according to the present invention. Building 100 is, for example, a two-story industrialized house having a steel frame, and has a frame frame composed of a reinforced concrete foundation (not shown) fixed to the ground and frame members such as columns and beams. It is composed of an upper structure 101 having and fixed to a reinforced concrete foundation. The frame members that make up the frame frame are standardized in advance, and are manufactured in advance at the factory and then carried to the construction site for assembly.

鉄筋コンクリート基礎は、上部構造体101の下側に位置し、上部構造体101を支持している。具体的に、鉄筋コンクリート基礎は、断面T字状の布基礎であり、フーチング部と、基礎梁としての立ち上がり部と、を備えている。また、鉄筋コンクリート基礎の立ち上がり部の天端部には、軸組架構の柱の柱脚を固定するためのアンカーボルトが設けられている。 The reinforced concrete foundation is located below the superstructure 101 and supports the superstructure 101. Specifically, the reinforced concrete foundation is a cloth foundation having a T-shaped cross section, and includes a footing portion and a rising portion as a foundation beam. In addition, anchor bolts for fixing the column bases of the columns of the frame frame are provided at the top of the rising portion of the reinforced concrete foundation.

また、鉄筋コンクリート基礎は、上部構造体101の軸組架構からの鉛直荷重を地盤に分散して伝達する機能に加えて、上部構造体101の外壁構造を構成する各種の部材、床構造を構成する各種の部材、屋根構造1を構成する各種の部材などを直接的又は間接的に支持する機能をも有している。 Further, the reinforced concrete foundation constitutes various members and floor structures constituting the outer wall structure of the upper structure 101, in addition to the function of distributing and transmitting the vertical load from the frame frame of the upper structure 101 to the ground. It also has a function of directly or indirectly supporting various members, various members constituting the roof structure 1, and the like.

上部構造体101の軸組架構は、複数の柱と複数の梁とから構成されている。軸組架構の外周部には、外壁構造を構成する外装材102等が配置される。また、軸組架構の層間部には、床構造を構成する床板部材等が配置される。更に、軸組架構の上部には、屋根構造1を構成する屋根材5等が配置される。 The frame frame of the superstructure 101 is composed of a plurality of columns and a plurality of beams. Exterior materials 102 and the like constituting the outer wall structure are arranged on the outer peripheral portion of the frame frame. Further, floor plate members and the like constituting the floor structure are arranged at the interlayer portion of the frame frame. Further, a roofing material 5 or the like constituting the roof structure 1 is arranged on the upper part of the frame frame.

建物100の外壁構造は、外装材102、断熱材及び内装材を少なくとも含む。外装材102として軽量気泡コンクリート(以下、「ALC」と記載する。「ALC」とは「autoclaved light weight concrete」の略である。)のパネルを用いることができるが、外装材102として、例えば、耐火性を有する金属系や窯業系のサイディング、押出成形セメント板、木質パネル材などを用いることも可能である。建物100の外壁構造の外層は、外装材102を複数連接させることにより形成することができる。 The exterior wall structure of the building 100 includes at least an exterior material 102, a heat insulating material and an interior material. As the exterior material 102, a panel of lightweight aerated concrete (hereinafter referred to as "ALC"; "ALC" is an abbreviation for "autoclaved light weight concrete") can be used, but as the exterior material 102, for example, It is also possible to use fire-resistant metal-based or ceramic-based siding, extruded cement boards, wood panel materials, and the like. The outer layer of the outer wall structure of the building 100 can be formed by connecting a plurality of exterior materials 102.

また、断熱材は、例えば、フェノールフォーム、ポリスチレンフォーム、ウレタンフォーム等の発泡樹脂系の材料で形成することができ、上述の外装材102により形成された外層の内面に沿って連接することにより、建物100の外壁構造の断熱層を形成することができる。 Further, the heat insulating material can be formed of, for example, a foamed resin-based material such as phenol foam, polystyrene foam, urethane foam, etc., and by connecting along the inner surface of the outer layer formed by the above-mentioned exterior material 102, the heat insulating material can be formed. A heat insulating layer of the outer wall structure of the building 100 can be formed.

更に、内装材は、例えば、石膏ボードを用いることができ、断熱層の内側に連接することにより、建物100の外壁構造の内層を形成することができる。 Further, as the interior material, for example, gypsum board can be used, and by connecting to the inside of the heat insulating layer, the inner layer of the outer wall structure of the building 100 can be formed.

建物100の床構造は、床下地材を含む。床下地材は、軸組架構の梁間に架設され、梁により直接的又は間接的に支持される。床下地材は、例えば、ALCパネルにより構成することができるが、折板、押出成形セメント板、木質パネル材などの別の部材を用いてもよい。上述した木質パネル材としては、例えば、張り合わせる板の繊維方向が平行する集成材や、張り合わせる板の繊維方向が直交するように交互に張り合わされる直交集成板(CLT(Cross Laminated Timberの略))などが挙げられる。なお、建物100の床構造は、床下地材に加えて、床下地材上に積層された、屋内空間の床面を構成するフローリング等の床仕上材などを含むものであってもよい。 The floor structure of the building 100 includes a floor base material. The floor base material is erected between the beams of the frame frame and is directly or indirectly supported by the beams. The floor base material can be composed of, for example, an ALC panel, but another member such as a folded plate, an extruded cement plate, or a wood panel material may be used. Examples of the above-mentioned wood panel material include laminated wood in which the fiber directions of the boards to be laminated are parallel, and orthogonal laminated boards (CLT (Cross Laminated Timber)) in which the laminated boards are alternately laminated so that the fiber directions are orthogonal to each other. )) And so on. The floor structure of the building 100 may include, in addition to the floor base material, a floor finishing material such as flooring, which is laminated on the floor base material and constitutes the floor surface of the indoor space.

以下、建物100の屋根構造1について詳細に説明する。 Hereinafter, the roof structure 1 of the building 100 will be described in detail.

図1に示すように、建物100の屋根構造1は、寄棟造りが複数組み合わされたような形状を有し、上面(外面)に隅棟10が形成された勾配屋根の構造である。 As shown in FIG. 1, the roof structure 1 of the building 100 has a shape like a combination of a plurality of hipped roof structures, and has a sloped roof structure in which a corner ridge 10 is formed on the upper surface (outer surface).

図2は、図1に示す屋根構造1のうち、1つの隅棟10の部分についての断面図である。具体的に、図2は、図1のI−I断面図である。図2に示すように、屋根構造1は、屋根躯体2と、下地材3と、防水材4と、屋根材5と、棟包6と、を含む。 FIG. 2 is a cross-sectional view of one corner ridge 10 of the roof structure 1 shown in FIG. Specifically, FIG. 2 is a cross-sectional view taken along the line II of FIG. As shown in FIG. 2, the roof structure 1 includes a roof skeleton 2, a base material 3, a waterproof material 4, a roof material 5, and a ridge package 6.

屋根躯体2は、建物100の上部構造体101(図1参照)の軸組架構の上部に位置する構造部材であり、下地材3、防水材4、屋根材5、及び棟包6を支持している。 The roof frame 2 is a structural member located above the frame frame of the superstructure 101 (see FIG. 1) of the building 100, and supports the base material 3, the waterproof material 4, the roof material 5, and the ridge package 6. ing.

下地材3は、例えば、構造用合板等により形成された野地板とすることができる。下地材3は、ビス等の締結手段50により、屋根躯体2に取り付けられている。なお、図2に示す下地材3は、ビス等の締結手段50によって屋根躯体2に対して直接取り付けられているが、この構成に限られるものではなく、下地材3を、屋根躯体2に対して固定された別の構造部材に固定するようにしてもよい。 The base material 3 can be, for example, a field board formed of structural plywood or the like. The base material 3 is attached to the roof skeleton 2 by a fastening means 50 such as a screw. The base material 3 shown in FIG. 2 is directly attached to the roof skeleton 2 by a fastening means 50 such as a screw, but the present invention is not limited to this configuration, and the base material 3 is attached to the roof skeleton 2. It may be fixed to another structural member fixed by the roof.

防水材4は、例えば、アスファルトルーフィング等の防水シートとすることができる。防水材4は、隅棟10を跨るようにして下地材3上に配設され、ビス等の締結手段50により、下地材3に対して、又は下地材3及び屋根躯体2等の構造部材に対して、位置が固定される。そして、この防水材4により屋根構造1の防水層が形成される。なお、図2に示す防水材4は、ビスにより、下地材3及び屋根躯体2に対して位置が固定されている。また、図2に示すように、防水材4は、隅棟10を挟んで両側に跨るように配設される。 The waterproof material 4 can be, for example, a waterproof sheet for asphalt roofing or the like. The waterproof material 4 is arranged on the base material 3 so as to straddle the corner ridge 10, and is attached to the base material 3 or a structural member such as the base material 3 and the roof frame 2 by means of fastening means 50 such as screws. On the other hand, the position is fixed. Then, the waterproof layer of the roof structure 1 is formed by the waterproof material 4. The position of the waterproof material 4 shown in FIG. 2 is fixed to the base material 3 and the roof skeleton 2 by screws. Further, as shown in FIG. 2, the waterproof material 4 is arranged so as to straddle both sides of the corner ridge 10.

屋根材5は、金属により形成されており、例えば、ガルバリウム鋼板(登録商標)、ステンレス板、銅板などの金属板材とすることができる。屋根材5は、防水材4の鉛直方向上側において、防水材4の上面に沿って、すなわち、屋根勾配の傾斜方向に沿って、連続して複数配設され、外部に露出する屋根構造1の上面を形成する。 The roofing material 5 is made of metal, and can be, for example, a metal plate material such as a galvalume steel plate (registered trademark), a stainless steel plate, or a copper plate. A plurality of roofing materials 5 are continuously arranged on the upper side of the waterproofing material 4 in the vertical direction along the upper surface of the waterproofing material 4, that is, along the slope direction of the roof slope, and the roofing material 1 is exposed to the outside. Form the top surface.

図3(a)は屋根材5の単体を、屋根材5の厚み方向から見た平面図であり、図3(b)は、屋根材5の単体を、厚み方向と直交する方向から見た側面図である。 FIG. 3A is a plan view of a single roofing material 5 viewed from the thickness direction of the roofing material 5, and FIG. 3B is a view of the single roofing material 5 from a direction orthogonal to the thickness direction. It is a side view.

図3に示すように、本実施形態の屋根材5は長尺板状の形状を有している。具体的に、本実施形態の屋根材5は、厚み方向から見た場合(図3(a)参照)に、互いに略平行する長辺側の外縁部21及び22と、これら長辺それぞれの延在方向の両側で一方の外縁部21と他方の外縁部22を繋ぐ短辺側の外縁部23及び24と、を有している。図3(a)に示す短辺側の外縁部23及び24は、長辺側の略平行する外縁部21及び22に対して傾斜しており、本実施形態の屋根材5は、図3(a)の平面視で、略台形の外形を有している。なお、この屋根材5は、矩形状の屋根材片を一部が重なる状態で横方向(図3(a)の長辺の延在方向となる方向)に複数枚並べることにより形成される。そして、隅棟10に沿う端部の屋根材片については、現場で傾斜状に切断加工される。これにより、短辺側の外縁部23及び24が形成される。 As shown in FIG. 3, the roofing material 5 of the present embodiment has a long plate shape. Specifically, the roofing material 5 of the present embodiment has outer edge portions 21 and 22 on the long side substantially parallel to each other when viewed from the thickness direction (see FIG. 3A), and the extension of each of these long sides. It has outer edge portions 23 and 24 on the short side connecting one outer edge portion 21 and the other outer edge portion 22 on both sides in the existing direction. The outer edge portions 23 and 24 on the short side shown in FIG. 3A are inclined with respect to the substantially parallel outer edge portions 21 and 22 on the long side, and the roofing material 5 of the present embodiment is shown in FIG. 3 (a). In the plan view of a), it has a substantially trapezoidal outer shape. The roofing material 5 is formed by arranging a plurality of rectangular roofing material pieces in a lateral direction (direction in which the long side of FIG. 3A extends) with some overlapping pieces. Then, the roofing material piece at the end along the corner ridge 10 is cut into an inclined shape at the site. As a result, the outer edge portions 23 and 24 on the short side side are formed.

また、図3(b)に示すように、図3(a)の平面視における長辺側の外縁部21及び22には、折り返し部が形成されている。具体的に、屋根材5は、平板状の本体部51と、この本体部51の一端部(本実施形態では一方の長辺側の外縁部21と同じ)に連続して形成されている一方の折り返し部52と、本体部51の他端部(本実施形態では他方の長辺側の外縁部22と同じ)に連続して形成されている他方の折り返し部53と、を備えている。 Further, as shown in FIG. 3 (b), a folded portion is formed on the outer edge portions 21 and 22 on the long side side in the plan view of FIG. 3 (a). Specifically, the roofing material 5 is continuously formed on a flat plate-shaped main body 51 and one end of the main body 51 (the same as the outer edge 21 on one long side in the present embodiment). 52, and the other folded-back portion 53 formed continuously on the other end of the main body 51 (same as the outer edge portion 22 on the other long side in the present embodiment).

一方の長辺側の外縁部21に形成されている折り返し部52は、屋根材5の厚み方向(本体部51の厚み方向と同じ)の一方側に折り返されており、他方の長辺側の外縁部22に形成されている折り返し部53は、屋根材5の厚み方向の他方側に折り返されている。このように、両方の折り返し部52及び53の折り返し方向を互いに逆向きにすることにより、屋根勾配の傾斜方向に沿って屋根材5同士を容易に連結することが可能となる。屋根勾配の傾斜方向に沿う屋根材5同士の連結構成についての詳細は後述する(図4、図5参照)。 The folded-back portion 52 formed on the outer edge portion 21 on one long side is folded back in one side in the thickness direction of the roofing material 5 (same as the thickness direction of the main body 51), and is folded back in the thickness direction of the other long side. The folded-back portion 53 formed on the outer edge portion 22 is folded back on the other side in the thickness direction of the roofing material 5. By making the folding directions of both the folded portions 52 and 53 opposite to each other in this way, the roofing materials 5 can be easily connected to each other along the inclined direction of the roof slope. Details of the connection configuration between the roofing materials 5 along the slope direction of the roof slope will be described later (see FIGS. 4 and 5).

なお、屋根材5は、図3(a)の平面視における短辺側の外縁部23及び24が隅棟10に沿うように防水材4上に設置される。屋根材5と隅棟10との納まりの詳細についても後述する(図6等参照)。 The roofing material 5 is installed on the waterproof material 4 so that the outer edge portions 23 and 24 on the short side in the plan view of FIG. 3A are along the corner ridge 10. The details of how the roofing material 5 and the corner ridge 10 fit together will be described later (see FIG. 6 and the like).

また、図3(a)に示すように、屋根材5の本体部51には、屋根材5の長手方向と直交する方向に延在する複数の溝部54が形成されている。 Further, as shown in FIG. 3A, a plurality of groove portions 54 extending in a direction orthogonal to the longitudinal direction of the roofing material 5 are formed in the main body portion 51 of the roofing material 5.

棟包6は、例えば、屋根材5と同様の材料により形成することができる。棟包6は、隅棟10の鉛直方向上側を覆っている。具体的に、隅棟10は、その水平方向両側に位置する2つの平面状の屋根面が交差する稜線により形成されており、棟包6は、隅棟10を跨って配置されている。なお、図2に示すように、棟包6は、隅棟10の両側の屋根面の隅棟10近傍に設けられた台部材7を覆うように配置されている。台部材7としては、例えば、樹脂部材や、木粉及び樹脂により形成される人工木材等を用いることができる。また台部材7は、隅棟10に沿って防水材4上に配置され、ビス等の締結手段50により、下地材3や屋根躯体2等に取り付けられる。図2に示す例では、台部材7として、断面外形の異なる2つの樹脂部材又は人工木材を用い、これら2つの部材を積み重ねて、棟包6の高さ位置を調整しているが、単一の部材により台部材7を構成してもよく、3つ以上の部材を組み合わせて台部材7を構成してもよい。 The ridge package 6 can be formed of, for example, the same material as the roofing material 5. The ridge 6 covers the upper side of the corner ridge 10 in the vertical direction. Specifically, the corner ridge 10 is formed by ridges where two flat roof surfaces located on both sides in the horizontal direction intersect, and the ridge ridge 6 is arranged so as to straddle the corner ridge 10. As shown in FIG. 2, the ridge package 6 is arranged so as to cover the base member 7 provided in the vicinity of the corner ridge 10 on the roof surface on both sides of the corner ridge 10. As the base member 7, for example, a resin member, artificial wood formed of wood powder and resin, or the like can be used. Further, the base member 7 is arranged on the waterproof material 4 along the corner ridge 10, and is attached to the base material 3 or the roof skeleton 2 or the like by a fastening means 50 such as a screw. In the example shown in FIG. 2, two resin members or artificial woods having different cross-sectional outer shapes are used as the base member 7, and these two members are stacked to adjust the height position of the ridge package 6, but a single member. The base member 7 may be formed by the members of the above, or the base member 7 may be formed by combining three or more members.

以下、屋根勾配の傾斜方向に沿う屋根材5同士の連続配置の詳細、及び屋根材5の隅棟10近傍での納まりの詳細について説明する。 Hereinafter, the details of the continuous arrangement of the roofing materials 5 along the slope direction of the roof slope and the details of the fitting of the roofing materials 5 in the vicinity of the corner ridge 10 will be described.

図4は、屋根勾配の傾斜方向に沿って連続して配置された複数の屋根材5を、傾斜方向に沿い屋根面と略直交する断面で見た断面図である。また、図5は、屋根材5同士を傾斜方向に連続して配設する方法の概要を示す図である。更に、図6は、屋根勾配の傾斜方向に沿って連続して配置された複数の屋根材5についての、隅棟10近傍での納まりを示す平面図である。 FIG. 4 is a cross-sectional view of a plurality of roofing materials 5 continuously arranged along the slope direction of the roof slope as viewed in a cross section substantially orthogonal to the roof surface along the slope direction. Further, FIG. 5 is a diagram showing an outline of a method of arranging the roofing materials 5 continuously in the inclined direction. Further, FIG. 6 is a plan view showing the fit of the plurality of roofing materials 5 continuously arranged along the slope direction of the roof slope in the vicinity of the corner ridge 10.

まず、屋根勾配の傾斜方向に沿って複数の屋根材5を連続して配置する構成の詳細について、傾斜方向において隣接して配置される2つの屋根材5を用いて説明する。具体的に、屋根構造1は、傾斜方向に沿って隣接して配置される第1屋根材5a及び第2屋根材5bを備えている。なお、第1屋根材5a及び第2屋根材5bは、側面視(図3(b)参照)において同形状を有するものである。そして、図4では、第1屋根材5a及び第2屋根材5bの他に、これらと屋根勾配の傾斜方向において隣接する別の屋根材5を描いているが、本実施形態において屋根勾配の傾斜方向において隣接する任意の2つの屋根材5の連結構成は同様であるため、ここでは、第1屋根材5aと第2屋根材5bとの間の連結構成についてのみ例示説明する。 First, the details of the configuration in which a plurality of roofing materials 5 are continuously arranged along the slope direction of the roof slope will be described with reference to two roofing materials 5 arranged adjacent to each other in the slope direction. Specifically, the roof structure 1 includes a first roofing material 5a and a second roofing material 5b that are arranged adjacent to each other along the inclination direction. The first roofing material 5a and the second roofing material 5b have the same shape in a side view (see FIG. 3B). Then, in FIG. 4, in addition to the first roofing material 5a and the second roofing material 5b, another roofing material 5 adjacent to these in the inclination direction of the roof slope is drawn. Since the connection configuration of any two roofing materials 5 adjacent to each other in the direction is the same, here, only the connection configuration between the first roofing material 5a and the second roofing material 5b will be described as an example.

図4に示すように、第1屋根材5aは、第2屋根材5bの水上側で、第2屋根材5bの鉛直方向上側に一部を重ねた状態で配置されている。具体的に、第1屋根材5aは、防水材4(図2参照)上に配置された第2屋根材5bに対して、第2屋根材5bの水上側の一部の鉛直方向上側を覆うようにして、第2屋根材5bの水上側に配置される。 As shown in FIG. 4, the first roofing material 5a is arranged on the water upper side of the second roofing material 5b and in a state where a part of the first roofing material 5a is overlapped on the vertical upper side of the second roofing material 5b. Specifically, the first roofing material 5a covers a part of the water upper side of the second roofing material 5b in the vertical direction with respect to the second roofing material 5b arranged on the waterproof material 4 (see FIG. 2). In this way, it is arranged on the water upper side of the second roofing material 5b.

ここで、第1屋根材5a及び第2屋根材5bそれぞれは、図3に示すように折り返し部を備えている。具体的に、第1屋根材5aは、平板状の本体部5a1と、この本体部5a1の水下側の端部(図3(a)に示す一方の長辺側の外縁部21に相当する)に連続して形成され、先端が水上側を向くように、第1屋根材5aの鉛直方向下側(本体部5a1の下面側と同じ)に屈曲する水下側折り返し部5a2と、本体部5a1の水上側の端部(図3(a)に示す他方の長辺側の外縁部22に相当する)に連続して形成され、先端が水下側を向くように、第1屋根材5aの鉛直方向上側(本体部5a1の上面側と同じ)に屈曲する水上側折り返し部5a3と、を備えている。 Here, each of the first roofing material 5a and the second roofing material 5b has a folded portion as shown in FIG. Specifically, the first roofing material 5a corresponds to the flat plate-shaped main body portion 5a1 and the lower end portion (one long side outer edge portion 21 shown in FIG. 3A) of the main body portion 5a1. ), And the underwater folded portion 5a2 that bends downward in the vertical direction (same as the lower surface side of the main body portion 5a1) of the first roofing material 5a so that the tip faces the water upper side, and the main body portion. The first roofing material 5a is formed continuously on the water upper end of 5a1 (corresponding to the other long side outer edge 22 shown in FIG. 3A) so that the tip faces the water bottom side. It is provided with a water upper folded portion 5a3 that bends upward in the vertical direction (same as the upper surface side of the main body portion 5a1).

また、図4に示すように、第2屋根材5bは、平板状の本体部5b1と、この本体部5b1の水下側の端部(図3(a)に示す一方の長辺側の外縁部21に相当する)に連続して形成され、先端が水上側を向くように、第2屋根材5bの鉛直方向下側(本体部5b1の下面側と同じ)に屈曲する水下側折り返し部5b2と、本体部5b1の水上側の端部(図3(a)に示す他方の長辺側の外縁部22に相当する)に連続して形成され、先端が水下側を向くように、第2屋根材5bの鉛直方向上側(本体部5b1の上面側と同じ)に屈曲する水上側折り返し部5b3と、を備えている。 Further, as shown in FIG. 4, the second roofing material 5b has a flat plate-shaped main body portion 5b1 and an end portion on the underwater side of the main body portion 5b1 (the outer edge on one long side shown in FIG. 3A). A folded portion on the underwater side that is continuously formed (corresponding to the portion 21) and bends downward in the vertical direction (same as the lower surface side of the main body portion 5b1) of the second roofing material 5b so that the tip faces the upper side of the water. 5b2 and the water upper end of the main body 5b1 (corresponding to the other long side outer edge 22 shown in FIG. 3A) are continuously formed so that the tip faces the water bottom side. The second roofing material 5b is provided with a water upper folded portion 5b3 that bends upward in the vertical direction (same as the upper surface side of the main body portion 5b1).

図4に示すように、第1屋根材5a及び第2屋根材5bは、第2屋根材5bの水上側折り返し部5b3と第1屋根材5aの水下側折り返し部5a2とが係合することにより、屋根勾配の傾斜方向において連結されている。より具体的に、第1屋根材5aの水下側折り返し部5a2、及び第2屋根材5bの水上側折り返し部5b3は、その一方が他方の中に入り込むようにして連結されている。 As shown in FIG. 4, in the first roofing material 5a and the second roofing material 5b, the water upper folded portion 5b3 of the second roofing material 5b and the water lower folded portion 5a2 of the first roofing material 5a engage with each other. Are connected in the direction of inclination of the roof slope. More specifically, the underwater folded portion 5a2 of the first roofing material 5a and the water upper folded portion 5b3 of the second roofing material 5b are connected so that one of them enters the other.

このように、第1屋根材5a及び第2屋根材5bを含む複数の屋根材5は、屋根勾配の傾斜方向において、防水材4上で、連続して連結されて配置されている。そのため、屋根材5の上面上の雨水は、各屋根材5の上面を伝って、水上側から水下側に流れていく。 As described above, the plurality of roofing materials 5 including the first roofing material 5a and the second roofing material 5b are continuously connected and arranged on the waterproofing material 4 in the inclination direction of the roof slope. Therefore, the rainwater on the upper surface of the roofing material 5 flows along the upper surface of each roofing material 5 from the upper surface of the water to the lower surface of the water.

ここで、台風時等において、複数の屋根材5の間などから、屋根材5の下面側に雨水が浸入する可能性があるが、屋根構造1は、屋根材5の下面側に浸入した雨水を所定方向に誘導可能な誘導路30を備えている。具体的には、図4に示すように、第2屋根材5bの水上側折り返し部5b3と、第1屋根材5aの水下側折り返し部5a2とは、水平方向(図4の紙面に直交する方向)に延在する間隙を形成した状態で係合しており、第1屋根材5aと第2屋根材5bとの間などから、第1屋根材5aの下面側に浸入した雨水は、上述した間隙を通じて水平方向に向かって流れる。すなわち、本実施形態の屋根構造1において、第1屋根材5aの鉛直方向下側に設けられた水下側折り返し部5a2は、第1屋根材5aの下面側に浸入した雨水を水平方向に流れるように誘導する誘導路30aとなる。誘導路30aにより所定方向に流れる雨水は、所定位置に形成される排出口31a(図6参照)を通じて、誘導路30aから排出される。この排出口31aの詳細は後述する(図6参照)。 Here, during a typhoon or the like, rainwater may infiltrate the lower surface side of the roofing material 5 from between the plurality of roofing materials 5, but the roof structure 1 has the rainwater infiltrated into the lower surface side of the roofing material 5. Is provided with a guide path 30 capable of guiding the vehicle in a predetermined direction. Specifically, as shown in FIG. 4, the water-up side folded portion 5b3 of the second roofing material 5b and the water-side folded portion 5a2 of the first roofing material 5a are orthogonal to the horizontal direction (the paper surface of FIG. 4). The rainwater that has entered into the lower surface side of the first roofing material 5a from between the first roofing material 5a and the second roofing material 5b, etc., is engaged in a state of forming a gap extending in the direction) described above. It flows horizontally through the gap. That is, in the roof structure 1 of the present embodiment, the underwater folded-back portion 5a2 provided on the lower side in the vertical direction of the first roofing material 5a allows rainwater that has entered the lower surface side of the first roofing material 5a to flow in the horizontal direction. It becomes a guide path 30a for guiding in this way. Rainwater flowing in a predetermined direction through the guide path 30a is discharged from the guide path 30a through a discharge port 31a (see FIG. 6) formed at a predetermined position. Details of the discharge port 31a will be described later (see FIG. 6).

次に、図5を参照しつつ、屋根材5の設置方法について説明する。屋根材5は、防水材4上において、屋根勾配の水下側から水上側に向かって順次設置していく。具体的には、図5に示すように、まず、屋根勾配の傾斜方向において最も水下側となる屋根材5を配置する。次に、この屋根材5の水上側で隣接する別の屋根材5として、例えば上述した第2屋根材5bを取り付ける。具体的には、第2屋根材5bは、既に設置されている最も水下側の屋根材5の水上側で、この屋根材5の鉛直方向上側に一部が重なるように設置される。より具体的に、第2屋根材5bの水下側折り返し部5b2が、既に設置されている最も水下側の屋根材5の水上側の折り返し部53と係合するように設置される(図5の矢印参照)。これに次いで、第1屋根材5aが設置される。この作業を水上側に向かって順次行うことにより、複数の屋根材5を屋根勾配の傾斜方向に沿って連続して配置することができる。 Next, a method of installing the roofing material 5 will be described with reference to FIG. The roofing material 5 is sequentially installed on the waterproofing material 4 from the lower side of the roof slope to the upper side of the water. Specifically, as shown in FIG. 5, first, the roofing material 5 which is the most underwater side in the inclination direction of the roof slope is arranged. Next, for example, the above-mentioned second roofing material 5b is attached as another roofing material 5 adjacent to the water side of the roofing material 5. Specifically, the second roofing material 5b is installed on the water upper side of the roofing material 5 on the lowest water side that has already been installed so as to partially overlap the upper side of the roofing material 5 in the vertical direction. More specifically, the underwater folded portion 5b2 of the second roofing material 5b is installed so as to engage with the underwater folded portion 53 of the most underwater roofing material 5 that has already been installed (FIG. See arrow 5). Following this, the first roofing material 5a is installed. By sequentially performing this work toward the upper side of the water, a plurality of roofing materials 5 can be continuously arranged along the slope direction of the roof slope.

また、本実施形態では金属製の屋根材5を用いている。そのため、屋根材5同士の連結部を本実施形態のように折り返し部52及び53として、錆び易い金属の切断面となる小口(端面)を外部に露出しないようにすることが好ましい。 Further, in the present embodiment, the metal roofing material 5 is used. Therefore, it is preferable to use the connecting portions of the roofing materials 5 as the folded portions 52 and 53 as in the present embodiment so that the edges (end faces) that are the cut surfaces of the metal that easily rusts are not exposed to the outside.

更に、図5に示すように、複数の屋根材5を屋根勾配の傾斜方向に沿って連続して配置していく際、隅棟10の部分では、各屋根材5の水平方向の外縁部(図3(a)に示す一方の短辺側の外縁部23に相当する)を、隅棟10を跨らずに、隅棟10に沿うようにして設置していく。つまり、図5に示す例では、複数の屋根材5が、その隅棟10側の外縁部が隅棟10に沿うように、屋根勾配の傾斜方向に連続して配置されている。なお、図5に示す各屋根材5は、その隅棟10側の外縁部が隅棟10に沿って設置された上述の台部材7に沿うようにして、配置されている。 Further, as shown in FIG. 5, when a plurality of roofing materials 5 are continuously arranged along the inclination direction of the roof slope, at the corner ridge 10, the outer edge portion of each roofing material 5 in the horizontal direction ( The outer edge portion 23 on one short side shown in FIG. 3A) is installed along the corner ridge 10 without straddling the corner ridge 10. That is, in the example shown in FIG. 5, a plurality of roofing materials 5 are continuously arranged in the inclination direction of the roof slope so that the outer edge portion on the corner ridge 10 side is along the corner ridge 10. Each roofing material 5 shown in FIG. 5 is arranged so that the outer edge portion on the corner ridge 10 side is along the above-mentioned base member 7 installed along the corner ridge 10.

次に、屋根材5の隅棟10近傍での納まりの詳細について、図6を参照して説明する。図6に示すように、隅棟10の近傍において複数の屋根材5は、屋根勾配の傾斜方向に沿って、かつ、隅棟10に沿って配置される。具体的に、第1屋根材5a及び第2屋根材5bを含む複数の屋根材5は、その水平方向の少なくとも一端側の外縁部(図3(a)に示す一方の短辺側の外縁部23に相当する)が隅棟10に沿うように、屋根勾配の傾斜方向に沿って連続して配置されている。より具体的に、図6に示す第1屋根材5a及び第2屋根材5bは、その水平方向の一端側の外縁部23a及び23bが隅棟10に沿うように、屋根勾配の傾斜方向に沿って連続して配置されている。なお、以下、説明の便宜上、第1屋根材5aの水平方向の一端側の外縁部23aを「第1外縁部23a」と記載し、第2屋根材5bの水平方向の一端側の外縁部23bを「第2外縁部23b」と記載する。 Next, the details of the fitting of the roofing material 5 in the vicinity of the corner ridge 10 will be described with reference to FIG. As shown in FIG. 6, in the vicinity of the corner ridge 10, the plurality of roofing materials 5 are arranged along the slope direction of the roof slope and along the corner ridge 10. Specifically, the plurality of roofing materials 5 including the first roofing material 5a and the second roofing material 5b have an outer edge portion on at least one end side in the horizontal direction (an outer edge portion on one short side shown in FIG. 3A). (Corresponding to 23) are continuously arranged along the slope direction of the roof slope so as to be along the corner ridge 10. More specifically, the first roofing material 5a and the second roofing material 5b shown in FIG. 6 are along the inclination direction of the roof slope so that the outer edge portions 23a and 23b on one end side in the horizontal direction are along the corner ridge 10. Are arranged continuously. Hereinafter, for convenience of explanation, the outer edge portion 23a on one end side in the horizontal direction of the first roofing material 5a is referred to as "first outer edge portion 23a", and the outer edge portion 23b on one end side in the horizontal direction of the second roofing material 5b is described. Is described as "second outer edge portion 23b".

本実施形態の第1屋根材5a及び第2屋根材5bを含む複数の屋根材5のそれぞれは、図3に示すように長尺板状の形状を有しており、水平方向の一端側の外縁部23のみならず、他端側の外縁部24も別の隅棟10に沿うように配置されるものであるが、屋根材5は、その水平方向の少なくとも一端側の外縁部が隅棟10に沿って配置可能なものであればよく、本実施形態で示す屋根材5の形状に限られるものではない。 As shown in FIG. 3, each of the plurality of roofing materials 5 including the first roofing material 5a and the second roofing material 5b of the present embodiment has a long plate-like shape, and is on one end side in the horizontal direction. Not only the outer edge portion 23 but also the outer edge portion 24 on the other end side is arranged along the other corner ridge 10, but the roofing material 5 has an outer edge portion on at least one end side in the horizontal direction of the corner ridge. It is not limited to the shape of the roofing material 5 shown in the present embodiment as long as it can be arranged along the number 10.

ここで、図6に示すように、第1屋根材5aの誘導路30aとしての水下側折り返し部5a2は、雨水を隅棟10側に誘導する。そして、誘導路30aの排出口31aは、隅棟10まで到達する前の位置であって、第2屋根材5bの上面に対して鉛直方向上側の位置に形成されている。 Here, as shown in FIG. 6, the underwater folded portion 5a2 as the guide path 30a of the first roofing material 5a guides rainwater to the corner ridge 10 side. The discharge port 31a of the guide path 30a is formed at a position before reaching the corner ridge 10 and at a position above the upper surface of the second roofing material 5b in the vertical direction.

これにより、誘導路30aを隅棟10側に向かって流れる雨水は、隅棟10に到達する前に、第2屋根材5bの上面上に排出される(図6の矢印参照)。つまり、第1屋根材5aの下面側に浸入した雨水を、再び第2屋根材5bの上面側に排出することができるので、防水材4の上面にまで雨水が流れ込んで、防水材4を固定するビス孔や釘孔等の貫通孔から防水材4の下面側に雨水が浸入することを抑制することができる。また、屋根面の継ぎ目となる隅棟10の部分に雨水が到達することをも抑制することができる。 As a result, the rainwater flowing through the guide path 30a toward the corner ridge 10 side is discharged onto the upper surface of the second roofing material 5b before reaching the corner ridge 10 (see the arrow in FIG. 6). That is, since the rainwater that has entered the lower surface side of the first roofing material 5a can be discharged to the upper surface side of the second roofing material 5b again, the rainwater flows to the upper surface of the waterproofing material 4 and fixes the waterproofing material 4. It is possible to prevent rainwater from entering the lower surface side of the waterproof material 4 through through holes such as screw holes and nail holes. In addition, it is possible to prevent rainwater from reaching the portion of the corner ridge 10 that is the seam of the roof surface.

なお、図6に示すように、屋根構造1では、第1屋根材5aの水下側折り返し部5a2により構成される誘導路30aのみならず、最も水下側に配置される屋根材5以外の全ての屋根材5の水下側の折り返し部52が同様の誘導路30を構成している。つまり、例えば第2屋根材5bについても、その水下側折り返し部5b2により、誘導路30bが構成されている。 As shown in FIG. 6, in the roof structure 1, not only the guide path 30a formed by the underwater folded portion 5a2 of the first roofing material 5a but also other than the roofing material 5 arranged on the most underwater side. Folded portions 52 on the underwater side of all roofing materials 5 form a similar guide path 30. That is, for example, also for the second roofing material 5b, the guide path 30b is formed by the underwater folded portion 5b2.

また、本実施形態の誘導路30aとしての間隙は、鉛直方向上側から見た場合に第1屋根材5a及び第2屋根材5bが重なる位置であって、鉛直方向において第1屋根材5aと第2屋根材5bとの間の位置に設けられている。つまり、排出口31aのみならず、誘導路30a全体が、第2屋根材5bの上面に対して鉛直方向上側の位置に形成されている。より具体的に、本実施形態の誘導路30aは、第2屋根材5bと係合して連結する連結部としての水下側折り返し部5a2により構成されている。つまり、本実施形態の第1屋根材5aの誘導路30aは、第2屋根材5bとの連結部を兼ねる構成である。そのため、第2屋根材との連結部及び誘導路を別々の部位により形成する構成と比較して、構成をより簡素化することができる。 Further, the gap as the guide path 30a of the present embodiment is a position where the first roofing material 5a and the second roofing material 5b overlap when viewed from the upper side in the vertical direction, and the first roofing material 5a and the first roofing material 5a and the second roofing material 5a overlap in the vertical direction. 2 It is provided at a position between the roofing material 5b. That is, not only the discharge port 31a but also the entire guide path 30a is formed at a position above the upper surface of the second roofing material 5b in the vertical direction. More specifically, the guide path 30a of the present embodiment is composed of a water-side folded portion 5a2 as a connecting portion that engages and connects with the second roofing material 5b. That is, the guide path 30a of the first roofing material 5a of the present embodiment also serves as a connecting portion with the second roofing material 5b. Therefore, the configuration can be further simplified as compared with the configuration in which the connecting portion and the guide path with the second roofing material are formed by separate portions.

なお、図6に示すように、本実施形態では、第1屋根材5aの誘導路30aのみならず、第2屋根材5bの誘導路30bを含む別の屋根材5の誘導路30が、上述した連結部を兼ねる構成となっている。 As shown in FIG. 6, in the present embodiment, not only the guide path 30a of the first roofing material 5a but also the guideway 30 of another roofing material 5 including the guideway 30b of the second roofing material 5b is described above. It has a structure that doubles as a connecting part.

また、本実施形態では、隅棟10近傍を鉛直方向上側から見た場合(図6参照)、第2屋根材5bの隅棟10側に位置する第2外縁部23bの水上側の端部23b1は、第1屋根材5aの隅棟10側に位置する第1外縁部23aの水下側の端部23a2よりも、隅棟10の近くに位置している。そして、排出口31aは、第1外縁部23aの水下側の端部23a2の位置に形成されている。 Further, in the present embodiment, when the vicinity of the corner ridge 10 is viewed from the upper side in the vertical direction (see FIG. 6), the water upper end portion 23b1 of the second outer edge portion 23b located on the corner ridge 10 side of the second roofing material 5b Is located closer to the corner ridge 10 than the underwater end 23a2 of the first outer edge portion 23a located on the corner ridge 10 side of the first roofing material 5a. The discharge port 31a is formed at the position of the end portion 23a2 on the water side of the first outer edge portion 23a.

より具体的に、本実施形態において、第1屋根材5aの第1外縁部23aの水下側の端部23a2は、水下側折り返し部5a2の隅棟10側の端部である。また、本実施形態において、第2屋根材5bの第2外縁部23bの水上側の端部23b1は、水上側折り返し部5b3の隅棟10側の端部である。つまり、本実施形態では、第2屋根材5bの水上側折り返し部5b3が、第1屋根材5aの水下側折り返し部5a2よりも、隅棟10の近くまで延在しており、誘導路30aの排出口31aは、第1屋根材5aの水下側折り返し部5a2の隅棟10側の端部の位置に形成されている。 More specifically, in the present embodiment, the underwater end portion 23a2 of the first outer edge portion 23a of the first roofing material 5a is the end portion of the underwater side folded portion 5a2 on the corner ridge 10 side. Further, in the present embodiment, the water upper end portion 23b1 of the second outer edge portion 23b of the second roofing material 5b is the end portion of the water upper folded portion 5b3 on the corner ridge 10 side. That is, in the present embodiment, the water-up side folded portion 5b3 of the second roofing material 5b extends closer to the corner ridge 10 than the water-side folded portion 5a2 of the first roofing material 5a, and the guide path 30a. The discharge port 31a is formed at the position of the end portion of the first roofing material 5a on the corner ridge 10 side of the underwater folded-back portion 5a2.

このように、本実施形態では、第1屋根材5aの水下側折り返し部5a2の隅棟10側の端部の位置と、第2屋根材5bの水上側折り返し部5b3の隅棟10側の端部の位置と、を異ならせる簡易な構成により、排出口31aを形成している。 As described above, in the present embodiment, the position of the end portion of the first roofing material 5a on the water side folded portion 5a2 on the corner ridge 10 side and the position of the second roofing material 5b on the water side folded portion 5b3 on the corner ridge 10 side. The discharge port 31a is formed by a simple configuration in which the position of the end portion is different from that of the end portion.

特に、本実施形態では、第1屋根材5aのうち隅棟10側の鋭利な突端を切断して取り除き、平面視(図6参照)において隅棟10の延在方向に対して傾斜するコーナー辺25aを形成することにより、上述の排出口31aを実現している。つまり、上述の排出口31aのような構成であれば、例えば現場で突端を切断するなどの簡単な加工によって、容易に実現することが可能である。 In particular, in the present embodiment, the sharp tip on the corner ridge 10 side of the first roofing material 5a is cut and removed, and the corner side inclined with respect to the extending direction of the corner ridge 10 in a plan view (see FIG. 6). By forming 25a, the above-mentioned discharge port 31a is realized. That is, if the configuration is such that the discharge port 31a described above, it can be easily realized by simple processing such as cutting the tip at the site.

なお、図6に示すように、本実施形態では、第1屋根材5aにより構成される誘導路30aの排出口31aのみならず、第2屋根材5bにより構成される誘導路30bの排出口31bを含む、別の屋根材5により構成される誘導路30の排出口31についても、上述した構成により形成されている。つまり、図3、図6に示すように、本実施形態では、第1屋根材5aのみならず、第2屋根材5bのコーナー辺25bなど、別の屋根材5においてもコーナー辺25が形成されており、これにより、排出口31が形成されている。 As shown in FIG. 6, in the present embodiment, not only the discharge port 31a of the guideway 30a made of the first roofing material 5a but also the discharge port 31b of the guideway 30b made of the second roofing material 5b. The discharge port 31 of the guideway 30 made of another roofing material 5 including the above is also formed by the above-mentioned structure. That is, as shown in FIGS. 3 and 6, in the present embodiment, the corner side 25 is formed not only on the first roofing material 5a but also on another roofing material 5 such as the corner side 25b of the second roofing material 5b. As a result, the discharge port 31 is formed.

また、図6に示すように隅棟10に沿って形成される各排出口31は、その鉛直方向上側が棟包6(図2参照)に覆われた位置に形成されている。このような構成とすれば、排出口31が外部に露出することを防ぎ、屋根構造1の外面の意匠性が損なわれ難い。また、排出口31の上側が覆われるため、排出口31の部分に雨水が滴下することを抑制することができる。これにより、排出口31を形成した部分を通じて却って隅棟10側へと雨水が進行してしまうことを抑制することができる。 Further, as shown in FIG. 6, each discharge port 31 formed along the corner ridge 10 is formed at a position where the upper side in the vertical direction is covered with the ridge 6 (see FIG. 2). With such a configuration, it is possible to prevent the discharge port 31 from being exposed to the outside, and the design of the outer surface of the roof structure 1 is not easily impaired. Further, since the upper side of the discharge port 31 is covered, it is possible to prevent rainwater from dripping onto the portion of the discharge port 31. As a result, it is possible to prevent rainwater from advancing toward the corner ridge 10 side through the portion where the discharge port 31 is formed.

以上のとおり、本実施形態の屋根構造1は、勾配屋根の隅棟10に沿って複数配置することが可能な屋根材5を含むものである。そして、この屋根材5は、水上側に向かって、鉛直方向上側に一部を重ねた状態で連続して配置することが可能なものである。更に、この屋根材5は、隅棟10に沿って連続して配置した状態において、水上側の屋根材5(本実施形態では例えば第1屋根材5a)の鉛直方向下側に、隅棟10側に雨水を誘導可能な誘導路30(本実施形態では例えば誘導路30a)が形成され、誘導路30の排出口31(本実施形態では例えば排出口31a)が、水上側の屋根材5の水下側で隣接する屋根材5(本実施形態では例えば第2屋根材5b)の上面に対して鉛直方向上側の位置に形成されるものである。 As described above, the roof structure 1 of the present embodiment includes the roofing material 5 which can be arranged in a plurality along the corner ridge 10 of the sloped roof. Then, the roofing material 5 can be continuously arranged in a state where a part of the roofing material 5 is overlapped on the upper side in the vertical direction toward the upper side of the water. Further, when the roofing material 5 is continuously arranged along the corner ridge 10, the corner ridge 10 is located on the lower side in the vertical direction of the roofing material 5 on the water side (for example, the first roofing material 5a in the present embodiment). A guide path 30 (for example, a guide path 30a in the present embodiment) capable of guiding rainwater is formed on the side, and the discharge port 31 (for example, the discharge port 31a in the present embodiment) of the guide path 30 is a roofing material 5 on the water side. It is formed at a position on the upper side in the vertical direction with respect to the upper surface of the roofing material 5 (for example, the second roofing material 5b in the present embodiment) adjacent to the underwater side.

本発明に係る屋根構造及びこの屋根構造に用いられる屋根材は、上述した実施形態において説明した具体的な構成に限られるものではなく、特許請求の範囲の記載に逸脱しない範囲において種々の変更が可能なものである。 The roof structure according to the present invention and the roofing material used for this roof structure are not limited to the specific configurations described in the above-described embodiment, and various changes can be made without departing from the description of the claims. It is possible.

例えば、本実施形態の誘導路30は、屋根材5の水下側の折り返し部52により形成されているが、この構成に限られるものではなく、例えば、屋根材5の水下側の折り返し部52とは別の部位により形成することも可能である。また、例えば、鉛直方向において重ねられる2つの屋根材5の間に配置された別の部材により誘導路を形成してもよい。但し、上述した実施形態のように、屋根材5の一部により誘導路30を形成する構成とすれば、誘導路30の構成を簡易化することができるため好ましい。 For example, the guide path 30 of the present embodiment is formed by a folded portion 52 on the underwater side of the roofing material 5, but is not limited to this configuration. For example, the folded portion on the underwater side of the roofing material 5 is formed. It is also possible to form it at a site different from 52. Further, for example, the guide path may be formed by another member arranged between the two roofing materials 5 stacked in the vertical direction. However, it is preferable that the guideway 30 is formed by a part of the roofing material 5 as in the above-described embodiment because the structure of the guideway 30 can be simplified.

また、本実施形態では、屋根構造1を有する建物100(図1参照)として、鉄骨造の軸組みを有する2階建ての住宅を例示しているが、この構成に限られるものではなく、例えば、木造の軸組みを有する建物であってもよい。また、1階建ての平屋でもよく、3階以上の建物であってもよい。なお、木造の軸組みを有する建物の場合、上述した屋根躯体2は、例えば、垂木や隅木とすることができる。 Further, in the present embodiment, as the building 100 having the roof structure 1 (see FIG. 1), a two-story house having a steel frame is illustrated, but the present invention is not limited to this configuration, for example. , It may be a building having a wooden frame. Further, it may be a one-story one-story building or a building with three or more floors. In the case of a building having a wooden frame, the roof frame 2 described above may be, for example, a rafter or a corner tree.

更に、本実施形態の屋根構造1は、寄棟造りが複数組み合わされたような形状を有するものであるが、屋根面が互いに接した部分に、隅に向かって傾斜した隅棟10が形成される屋根構造であればよく、寄棟造りに限られるものではない。したがって、例えば、入母屋造りや方形造りなどのであってもよい。 Further, the roof structure 1 of the present embodiment has a shape as if a plurality of hipped roof structures are combined, but a corner ridge 10 inclined toward a corner is formed at a portion where the roof surfaces are in contact with each other. The roof structure is not limited to the hipped roof structure. Therefore, for example, it may be a gabled building or a square structure.

また更に、本発明に係る屋根構造は、新築の建物に適用可能であるのみならず、既存の建物の屋根の改修によって、既存の建物にも適用することも可能である。かかる場合には、例えば、既存の建物の既存の屋根材の上に、本発明に係る屋根材を重ねて設置した屋根構造とすることができる。例えば古い建物の屋根材には、アスベストを含む化粧スレートが用いられている場合がある。このような場合には、本発明にかかる屋根材を、既存の屋根材を取り除くことなく、既存の屋根材の上に重ねて設置する。これにより、屋根の改修作業が容易になると共に、アスベスト等の飛散を抑制することができる。 Furthermore, the roof structure according to the present invention can be applied not only to a newly constructed building but also to an existing building by repairing the roof of the existing building. In such a case, for example, a roof structure in which the roofing material according to the present invention is superposed on the existing roofing material of an existing building can be formed. For example, cosmetic slate containing asbestos may be used for the roofing material of an old building. In such a case, the roofing material according to the present invention is installed on top of the existing roofing material without removing the existing roofing material. This facilitates the roof repair work and suppresses the scattering of asbestos and the like.

本発明は、屋根構造及びこの屋根構造に用いられる屋根材に関する。 The present invention relates to a roof structure and a roofing material used for this roof structure.

1:屋根構造
2:屋根躯体
3:下地材
4:防水材
5:屋根材
5a:第1屋根材
5a1:本体部
5a2:水下側折り返し部
5a3:水上側折り返し部
5b:第2屋根材
5b1:本体部
5b2:水下側折り返し部
5b3:水上側折り返し部
6:棟包
7:台部材
10:隅棟
21:長辺側の一方の外縁部
22:長辺側の他方の外縁部
23:短辺側の一方の外縁部
23a:第1外縁部
23a2:第1外縁部の水下側の端部
23b:第2外縁部
23b1:第2外縁部の水上側の端部
24:短辺側の他方の外縁部
25:コーナー辺
30、30a、30b:誘導路
31、31a、31b:排出口
50:締結手段
51:本体部
52、53:折り返し部
54:溝部
100:建物
101:上部構造体
102:外装材
1: Roof structure 2: Roof skeleton 3: Base material 4: Waterproof material 5: Roof material 5a: First roof material 5a1: Main body 5a2: Underwater folded part 5a3: Water upper folded part 5b: Second roof material 5b1 : Main body 5b2: Folded underwater 5b3: Folded over water 6: Folded roof 6: Base member 10: Corner ridge 21: One outer edge on the long side 22: The other outer edge on the long side 23: One outer edge portion 23a on the short side side: first outer edge portion 23a2: lower end portion 23b of the first outer edge portion: second outer edge portion 23b1: water upper end portion 24 of the second outer edge portion 24: short side side The other outer edge portion 25: corner sides 30, 30a, 30b: guide path 31, 31a, 31b: discharge port 50: fastening means 51: main body portion 52, 53: folded portion 54: groove portion 100: building 101: superstructure 102: Exterior material

Claims (4)

隅棟が形成された勾配屋根の屋根構造であって、
前記隅棟に沿って配置された第1屋根材及び第2屋根材を備え、
前記第1屋根材は、前記第2屋根材に一部を重ねた状態で水上側に配置されており、
前記第2屋根材が前記第1屋根材に覆われた状態において、前記第1屋根材の水下側の端部の水下側折り返し部に、前記隅棟側に向かって雨水を誘導可能な誘導路が設けられ、屋根勾配の傾斜方向に対して直交する方向の端部に、前記誘導路の排出口が形成され、前記排出口の鉛直方向下側に前記第2屋根材が位置し、
前記第1屋根材は、前記隅棟側に位置する第1外縁部を備え、
前記第2屋根材は、前記隅棟側に位置する第2外縁部を備え、
鉛直方向上側から見た場合に、前記第2外縁部の水上側の端部は、前記第1外縁部の水下側の端部よりも、前記隅棟の近くに位置し、
前記排出口は、前記第1外縁部の水下側の端部の位置に形成されていることを特徴とする屋根構造。
It is a roof structure with a sloped roof with corner ridges formed.
It is provided with a first roofing material and a second roofing material arranged along the corner ridge.
The first roofing material is arranged on the water side in a state where a part of the first roofing material is overlapped with the second roofing material.
In a state where the second roofing material is covered with the first roofing material, rainwater can be guided toward the corner ridge side to the underwater folded portion of the underwater end of the first roofing material. A guide path is provided, a discharge port of the guide path is formed at an end in a direction orthogonal to the inclination direction of the roof slope, and the second roofing material is located on the lower side in the vertical direction of the discharge port.
The first roofing material includes a first outer edge portion located on the corner ridge side.
The second roofing material includes a second outer edge portion located on the corner ridge side.
When viewed from the upper side in the vertical direction, the water upper end of the second outer edge is located closer to the corner ridge than the water lower end of the first outer edge.
The roof structure is characterized in that the discharge port is formed at a position of an end portion of the first outer edge portion on the underwater side.
前記第1屋根材の前記水下側折り返し部、先端が水上側を向くように折り返されており、
前記第2屋根材は、水上側の端部に、先端が水下側を向くように折り返され、前記水下側折り返し部と係合する水上側折り返し部を備えることを特徴とする、請求項1に記載の屋根構造。
Wherein Underwater side folded portion of the first roof member is folded so-edge faces the water side,
The second roof member is an end portion of the water side, the tip is folded back to face Underwater side, and wherein the obtaining Bei the water-side folded portion that engages the Underwater side folded portion, wherein Item 1. The roof structure according to item 1.
前記隅棟を覆う棟包を備え、
前記誘導路の前記排出口は、前記棟包に覆われた位置に形成されていることを特徴とする、請求項1又は2に記載の屋根構造。
With a ridge covering the corner ridge
The roof structure according to claim 1 or 2, wherein the outlet of the guide path is formed at a position covered by the ridge package.
勾配屋根の隅棟に沿って複数配置することが可能な屋根材であって、
水上側に向かって、鉛直方向上側に一部を重ねた状態で連続して配置することが可能であり、
水下側の屋根材が水上側の屋根材に覆われた状態において、前記水上側の屋根材の水下側の端部の水下側折り返し部に、前記隅棟側に向かって雨水を誘導可能な誘導路が設けられ、屋根勾配の傾斜方向に対して直交する方向の端部に、前記誘導路の排出口が形成され、前記排出口の鉛直方向下側に前記水下側の屋根材が位置し、
前記水下側の屋根材の前記隅棟側に位置する外縁部の水上側の端部は、前記水上側の屋根材の前記隅棟側に位置する外縁部の水下側の端部よりも、前記隅棟の近くに位置し、かつ、前記排出口は、前記水上側の屋根材の前記隅棟側に位置する外縁部の水下側の端部の位置に形成される、ように前記隅棟に沿って連続して配置可能なことを特徴とする屋根材。
It is a roofing material that can be placed multiple times along the corner ridge of a sloped roof.
It is possible to arrange the parts continuously on the upper side in the vertical direction toward the upper side of the water.
In a state where the roofing material on the underwater side is covered with the roofing material on the water side, rainwater is guided toward the corner ridge side to the underwater folded portion at the underwater end of the roofing material on the water side. A possible guide path is provided, a discharge port of the guide path is formed at an end in a direction orthogonal to the inclination direction of the roof slope, and the roof material on the underwater side is formed on the lower side in the vertical direction of the discharge port. Is located,
The water-side end of the outer edge of the underwater roofing material located on the corner ridge side is larger than the water-side end of the outer edge of the water-up roof material located on the corner ridge side. The outlet is located near the corner ridge, and the outlet is formed at the lower end of the outer edge of the roofing material on the water side, which is located on the corner ridge side. A roofing material that can be continuously placed along the corner ridge.
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