JP6889528B2 - Roof structure and roofing material - Google Patents

Description

The present invention relates to a roof structure and a roofing material used for this roof structure.

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.

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.

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.

Japanese Unexamined Patent Publication No. 2004-225391 Japanese Unexamined Patent Publication No. 2013-151792

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.

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.

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.

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.

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.

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.

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.

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.

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.

As one embodiment of the present invention, it is preferable that the first roofing material and the second roofing material are made of metal.

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.

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.

It is a figure which shows the building which has the roof structure which concerns on this invention. FIG. 1 is a cross-sectional view taken along the line II of FIG. 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. 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. It is a figure which shows the outline of the method of arranging roofing materials continuously in an inclined direction. 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Hereinafter, the roof structure 1 of the building 100 will be described in detail.

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).

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.

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.

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.

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.

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.

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.

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.

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).

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).

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).

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.

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.

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.

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.

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.

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.

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).

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).

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.

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.

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).

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.

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.

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.

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".

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The present invention relates to a roof structure and a roofing material used for this roof structure.

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)

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. 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. 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. 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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