Roofing materials and roof structures

Abstract

To provide a roofing material and a roof structure capable of preventing rainwater from accumulating in a part through which a binding nail of an underlaying material penetrates.SOLUTION: A plurality of roofing materials 130 are provided on a roof structure 1 including a sloping sheathing board 110 and underlaying material 120 provided on sheathing board 110. The roofing materials are arranged on the underlaying material 120 in a direction from a ridge 11 to an eaves 12 of the sheathing board 110 and in a width direction perpendicular to the direction from the ridge 11 to the eaves 12. The roofing materials are partially overlapped in the vertical direction and tied to the sheathing board 110 with a tie nail 140. The roofing materials have a plurality of holes 131 to which the tie nail 140 is arranged. The upper end portions thereof are inclined from the upper end portion toward the lower end portion side in the width direction, with the portions where the plurality of tie nails 140 for binding the roofing materials 130 stacked above are adjacent to each other as a top portion 130a.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a roof material and a roof structure that are placed on a sheathing board. [Background technology]

[0002] For buildings used as residences, for example, techniques are known that use architectural structures such as wooden frame, wooden frame, reinforced concrete, and reinforced concrete. For such buildings, a roof structure formed by a flat roof surface is known as a roof shape. For example, a technique is known for such a roof structure in which a plurality of plate-shaped roofing materials are fastened to a sheathing board on which an underlayment such as waterproof paper is provided on the upper surface by fastening nails (see, for example, Patent Document 1). Specifically, in the roof structure, up to three roofing materials are partially stacked in the vertical direction and fastened to the sheathing board. In addition, each roofing material has a hole for arranging the fastening nail, since it is fastened to the sheathing board by fastening nails. For example, a second roofing material is stacked on the eaves side of the first roofing material from the sheathing board side, and the second roofing material is fastened to the sheathing board at a position adjacent to the end of the eaves side of the first roofing material. Then, a third roofing material is layered on top of the second roofing material so as to cover the fastening nails that fasten the second roofing material to the sheathing boards. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-089541 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned multiple roofing materials are arranged with some parts overlapping, but because the heads of the fastening nails are between the overlapping roofing materials, gaps are formed on the eaves side of the overlapping roofing materials. As a result, rainwater seeps in through the gaps between the overlapping roofing materials and rises through the gaps between the overlapping roofing materials due to capillary action and wind. When the rainwater rises to the fastening nails, it flows downward through the gaps between the fastening nails and the holes in the roofing materials. At this time, because the fastening nails are adjacent to the ridge side end of the lower roofing material, the rainwater accumulates in the corner formed by the underlayment and the end face of the ridge side end of the lower roofing material.

[0005] In this way, when rainwater accumulates on the underlayment, the moisture accumulates in the areas where the underlayment is pierced by the fastening nails, making it easier for the rainwater to pass downward between the underlayment and the fastening nails.

[0006] Therefore, an object of the present invention is to provide a roofing material and a roof structure that can prevent rainwater from accumulating in the areas where the fastening nails of the underlayment pass through. [Means for solving the problem]

[0007] According to one aspect of the present invention, a plurality of roofing materials are provided on a roof structure having an inclined sheathing board and an underlayment provided on the sheathing board, the roofing materials being arranged side by side on the underlayment in a direction from the ridge of the sheathing board toward the eaves and in a width direction perpendicular to the direction from the ridge to the eaves, and being arranged with some overlapping in the vertical direction and fastened to the sheathing board with fastening nails, the roofing materials having a plurality of holes for arranging the fastening nails, and an upper end portion of the roofing materials being inclined from the upper end toward the lower end side in the width direction with the portions adjacent to the fastening nails that fasten the roofing materials arranged overlapping above as apexes. The roof material has a plurality of notches formed in a portion between the adjacent peaks of the upper end portion. .

[0008] According to one aspect of the present invention, a roof structure includes a sloping sheathing board, an underlayment provided on the sheathing board, a plurality of roofing materials having a plurality of holes, arranged on the underlayment and fastened to the sheathing board, arranged side by side in a direction from the ridge of the sheathing board toward the eaves and in a width direction perpendicular to the direction from the ridge to the eaves, and arranged with some overlapping in the vertical direction, and a plurality of fastening nails inserted into the holes and fastening the roofing materials to the sheathing board, the upper end of each of the roofing materials being inclined from the upper end toward the lower end in the width direction with the portions adjacent to the fastening nails fastening the roofing materials arranged in an overlapping manner above as apexes. The roof material has a plurality of notches formed in a portion between the adjacent peaks of the upper end portion. . Effect of the Invention

[0009] According to the present invention, it is possible to provide a roofing material and a roof structure capable of preventing rainwater from accumulating in the area where the fastening nails of the underlayment pass through. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a configuration of a roof structure according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is an explanatory diagram showing the configuration of the roof material used in the roof structure, and also showing the arrangement of multiple roof materials and fastening nails. [Diagram 5] FIG. 11 is an explanatory diagram showing a modified example of the roof material. [Figure 6] FIG. 11 is an explanatory diagram showing a modified example of the roof material. [Figure 7] FIG. 1 is an explanatory diagram showing a configuration of a roofing material according to a conventional technique. [Figure 8] FIG. 1 is an explanatory diagram showing the configuration of a roof structure according to a conventional technique. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The configuration of a roof structure 1 using a roof material 130 according to one embodiment will be described below with reference to Figures 1 to 8. In addition, for the purpose of explanation, the configuration is shown enlarged, reduced, or omitted in each figure as appropriate.

[0012] Fig. 1 is a perspective view showing the configuration of a roof structure 1 according to one embodiment of the present invention. Fig. 2 is a cross-sectional view showing an enlarged view of the configuration of the roof structure 1, and Fig. 3 is an explanatory diagram showing an enlarged view of the configuration of the roof structure 1 and showing an example of the flow of rainwater with arrows. Fig. 4 is an explanatory diagram showing the configuration of a roof material 130 used in the roof structure 1, and showing examples of multiple roof materials 130 and fastening nails 140. Figs. 5 and 6 are explanatory diagrams showing modified examples of the roof material 130.

[0013] As shown in Fig. 1, the roof structure 1 slopes from a ridge 11 toward an eaves end 12. The roof structure 1 may have a gable, a ridge pillar, a valley, etc., as appropriate, depending on the shape of the building.

[0014] 1 to 4, the roof structure 1 includes a sheathing board 110, an underlayment material 120, a plurality of roof materials 130, and a plurality of fastening nails 140. The roof structure 1 also includes, for example, an eaves edge trim, a gable edge trim, and a ridge trim.

[0015] The roof structure 1 may have other members between the sheathing board 110 and the roof material 130 other than the underlayment material 120, such as a heat shield sheet or a member for ventilation.

[0016] The sheathing board 110 is fastened to the rafters by nails or the like. The sheathing board 110 is formed, for example, from structural plywood. The sheathing board 110 may be made of MDF (Medium Density Fiberboard), particle board, OSB (Oriented Strand Board), or a single board material such as solid cedar.

[0017] The underlaying material 120 is a so-called waterproof paper or roofing sheet having waterproof properties. For example, the underlaying material 120 is formed by impregnating and / or applying asphalt to a base material. The underlaying material 120 is fastened to the sheathing board 110, for example. As a specific example, the underlaying material 120 is provided on the top board of the sheathing board 110.

[0018] The multiple roof materials 130 are arranged side by side in a first direction, which is the inclination direction (vertical direction) of the sheathing boards 110 from the ridge 11 toward the eaves 12, and in a second direction, which is the width direction (horizontal direction) perpendicular to or intersecting the first direction. For example, adjacent roof materials 130 in the horizontal direction are arranged side by side, butt to side, with no gaps between them, but they may also be arranged with gaps between them.

[0019] The multiple roofing materials 130 are partially stacked in the inclined direction from the ridge 11 toward the eaves 12. The multiple roofing materials 130 are each fastened by fastening nails 140 to the sheathing boards 110 to which the underlayment material 120 is fastened. For example, the roofing materials 130 are stacked on the sheathing boards 110 in the vertical direction above and below the roofing material 130 that is the middle layer, resulting in a three-layer roofing material 130. That is, as a specific example, as shown in Figures 2 and 3, a maximum of three roofing materials 130 overlapping one sheathing board 110 are partially stacked in the vertical direction, but in a plan view, as shown in Figure 4, two roofing materials 130 are stacked below and above one roofing material 130. That is, since the roofing materials 130 are arranged to be shifted in the second direction for each layer in the vertical direction, two roofing materials 130 are arranged so that a portion of one roofing material 130 overlaps with another roofing material 130.

[0020] Also, as shown in FIG. 4, of the multiple roofing materials 130 arranged in a stacked manner, the roofing material 130 arranged at the top is positioned so as to cover the pilot holes 131 and fastening nails 140 of the roofing material 130 arranged at the bottom.

[0021] As shown in Fig. 4, the roofing material 130 is formed in a rectangular plate shape. The roofing material 130 is a so-called decorative slate. As shown in Figs. 2 to 4, the roofing material 130 has, for example, a plurality of pilot holes (holes) 131 arranged in a width direction perpendicular to the first direction at the center side in the first direction. As shown in Figs. 2 and 3, the pilot holes 131 are formed to have a smaller diameter than the outer diameter of the head 141 of the fastening nail 140 and a larger diameter than the outer diameter of the nail portion 142 of the fastening nail 140. In other words, the pilot holes 131 are openings through which the nail portions 142 of the fastening nails 140 are inserted.

[0022] The pilot holes 131 are formed, for example, at three or more locations in the width direction (second direction) of the roofing material 130. In the example of this embodiment, the pilot holes 131 are provided at four locations lined up in the second direction. For example, as shown in Fig. 4, the four pilot holes 131 are arranged on the center side in the first direction of the roofing material 130, and two of the four pilot holes 131 are arranged on one side in the width direction (second direction) and the remaining two pilot holes 131 are arranged on the other side in the width direction.

[0023] The end (upper end) of roofing material 130 on the ridge 11 side is formed to be partially inclined. As a specific example, roofing material 130 is inclined with respect to the first and second directions of sheathing board 110 in the direction from the upper end toward the lower end of roofing material 130, with a main portion being a portion adjacent in the first direction to fastening nails 140 that fasten roofing materials 130 arranged in an overlapping manner above and a portion adjacent in the second direction.

[0024] The end of the roofing material 130 on the ridge 11 side will be described in more detail. As shown in Fig. 4, the roofing material 130 has a plurality of apexes 130a at an upper end in a region adjacent in the first direction to the pilot holes 131 of the roofing material 130 arranged above and overlapping it, and the fastening nails 140 inserted into the pilot holes 131 to fasten the roofing material 130. Therefore, the number of the plurality of apexes 130a is the same as the number of the pilot holes 131, or the same as the number of the pilot holes 131 provided in the roofing material 130 arranged above and overlapping it, in a region adjacent in the first direction.

[0025] Moreover, the roof material 130 has, at its upper end, a plurality of inclined portions 130b that are inclined in the first direction and the second direction with each apex 130a as an apex. The roof material 130 also has one or more notches 130c between adjacent apexes 130a in the second direction at its upper end.

[0026] The apex 130a may have a planar end surface extending in the second direction or in a direction intersecting the second direction, or may be angular with a ridge forming a tip. For example, in the example shown in Fig. 4, the apex 130a has a planar end surface extending in a direction intersecting the second direction, and in the modified examples shown in Figs. 5 and 6, the apex 130a is angular with a ridge forming a tip.

[0027] As a specific example of the arrangement of the roofing materials 130, as shown in Fig. 4, the roofing materials 130 are arranged overlapping each other with parts of two roofing materials 130 abutting against each other in the second direction. Therefore, two of the four pilot holes 131 formed in each of the two roofing materials 130 arranged adjacent to each other are adjacent to the upper end of one roofing material 130. Therefore, the apexes 130a formed at the upper end of the roofing material 130 are arranged in four positions adjacent to the two pilot holes 131 (total of four pilot holes 131) of the two roofing materials 130 arranged above.

[0028] The inclined portion 130b may be inclined from the apex 130a at the upper end toward the end (lower end) of the roof material 130 on the eaves 12 side, and the angle can be set appropriately. The inclination angles of the multiple inclined portions 130b may be the same or different. For example, the inclination angles of the inclined portions 130b at both ends in the width direction among the multiple inclined portions 130b may be the same, and the inclination angles of the remaining inclined portions 130b may be the same, with the inclination angles of the both ends and the remaining inclined portions 130b being different angles. Also, one inclined portion 130b may be configured to have two or more different inclination angles.

[0029] The cutout portion 130c is a V-shaped (angular) cutout. The cutout portion 130c is provided in a part of the inclined portion 130b or between adjacent inclined portions 130b. For example, as shown in Fig. 4 and Fig. 5, a configuration may be used in which one cutout portion 130c is provided between adjacent inclined portions 130b provided between adjacent apexes 130a.

[0030] 6, a single notch 130c may be provided in the middle of an inclined portion 130b adjacent to an apex 130a provided on both ends of the roof material 130 in the width direction on the outer side in the width direction. Also, as shown in FIG. 6, two notches 130c may be provided between adjacent apexes 130a.

[0031] Such cutouts 130c can store rainwater and determine the position to which the stored rainwater flows. For this reason, for example, cutouts 130c are provided at a position offset from pilot holes 131 in the width direction (second direction) of roofing material 130, as shown by the arrow in Fig. 4, so that pilot holes 131 of roofing material 130 are not present in the direction (first direction) in which rainwater stored in cutouts 130c flows. In other words, the position of cutouts 130c in the second direction of roofing material 130 is set so that cutouts 130c are located at a position that avoids pilot holes 131 in the first direction.

[0032] The fastening nail 140 is used in the roof structure 1, for example, to fasten the roof material 130 to the sheathing board 110, as shown in FIGS.

[0033] The fastening nails 140 are driven into the sheathing board 110, for example, in the thickness direction of the sheathing board 110, in other words, in a direction perpendicular to the surface direction of the main surface of the sheathing board 110. Note that the driving direction of the fastening nails 140 is not limited to the thickness direction of the sheathing board 110.

[0034] The fastening nail 140 includes, for example, a head portion 141 and a nail portion 142 .

[0035] The head portion 141 is formed in a disk shape.

[0036] The nail portion 142 is integrally formed on one main surface of the head portion 141. The nail portion 142 is formed in a cylindrical shape. The nail portion 142 has, for example, a plurality of ring-shaped protrusions 142a formed at equal intervals in the axial direction (longitudinal direction) of the nail portion 142.

[0037] The multiple protrusions 142a improve the fastening force fastening the roof material 130 to the sheathing board 110 when the fastening nail 140 is driven into the sheathing board 110. In other words, the multiple protrusions 142a improve the tensile strength, which is the holding force in the direction in which the fastening nail 140 comes out of the sheathing board 110 when it is driven into the sheathing board 110. The multiple protrusions 142a are provided at least in the portions to be disposed within the sheathing board 110, for example, so as to be able to improve the fastening force between the sheathing board 110 and the roof material 130. The number and shape of the protrusions 142a can be set as appropriate as long as the fastening force can be improved.

[0038] According to the roof material 130 configured in this manner and the roof structure 1 using the roof material 130, a peak 130a is provided at the upper end side of the roof material 130 adjacent to the fastening nails 140 that fasten the roof materials 130 that are arranged on top of each other, and a sloped portion 130b is provided adjacent to the peak 130a.

[0039] Therefore, when rainwater seeps in through the gaps between the overlapping roofing materials 130 and moves to the lower roofing material 130 side through the gaps between the pilot holes 131 and the fastening nails 140, the rainwater moves to the inclined part 130b before collecting at the top 130a of the end of the lower roofing material 130, and the inclination of the inclined part 130b causes the rainwater to move to the eaves 12 side. Therefore, it is possible to prevent rainwater flowing downward from the pilot holes 131 of the upper roofing material 130 from collecting at the end of the lower roofing material 130 on the ridge 11 side. Therefore, it is possible to prevent rainwater from staying at the end of the roofing material 130 arranged on the underlayment material 120, and it is possible to prevent rainwater from moving to the sheathing board 110 side through the opening formed in the underlayment material 120 by the fastening nails 140 penetrating through.

[0040] This effect will be explained below using an example of three roofing materials 130 stacked vertically, with reference to Figures 3, 4, 8 and 9. Figures 8 and 9 show a roofing material 530 according to the prior art, and the effect of the roofing material 130 will be explained in comparison with this conventional roofing material 530.

[0041] Here, the roofing material 130 whose end on the ridge 11 side is placed on the underlayment 120 is referred to as the lower layer roofing material 130A. The roofing material 130 placed on the lower layer roofing material 130A and fastened to the sheathing boards 110 with fastening nails 140 is referred to as the middle layer roofing material 130B. The roofing material 130 placed on the middle layer roofing material 130B and covering the fastening nails 140 fastening the middle layer roofing material 130B with its end on the eaves 12 side is referred to as the upper layer roofing material 130C.

[0042] In addition, although the lower layer, middle layer, and upper layer are described for each roofing material 130 in Figures 2 and 3, this is used for convenience to explain the arrangement relationship of the roofing materials 130 shown in Figures 2 and 3, but these terms do not limit the arrangement of the roofing materials 130. That is, one roofing material 130 may be arranged in the lower layer, middle layer, and upper layer depending on the part. More specifically, the center part where the pilot hole 131 of one roofing material 130 is formed constitutes the middle layer roofing material 130B, but the end of the roofing material 130 on the ridge 11 side is placed on the underlayment material 120, so the end on the ridge 11 side constitutes the lower layer roofing material 130A, and the end of the roofing material 130 on the eaves 12 side covers the fastening nails 140 that fasten the other roofing materials 130, so the end on the eaves 12 side constitutes the upper layer roofing material 130C. Therefore, one roofing material 130 is partially laminated with other roofing materials 130 to form a lower layer, a middle layer and an upper layer of the three-layer roofing material 130 at each position.

[0043] First, when multiple roofing materials 130 are stacked and arranged, a small gap is generated at least between the middle layer roofing material 130B and the upper layer roofing material 130C. This small gap is generated by factors such as the thickness of the head 141 of the fastening nail 140, the angle difference between the middle layer roofing material 130B and the upper layer roofing material 130C, and the distance from the fastening nail 140 to the end of the upper layer roofing material 130C on the eaves 12 side.

[0044] For ease of explanation, in Figures 2 and 3, the gaps between each roof material 130 are shown enlarged, reduced, omitted or simplified as appropriate, but it goes without saying that these are different from the gaps that occur in the actual roof structure 1.

[0045] Rainwater seeps in through gaps between the middle roofing material 130B and the upper roofing material 130C. This is due to water head, wind, capillary action, etc. When various conditions are met, rainwater that seeps in through gaps between the middle roofing material 130B and the upper roofing material 130C may move to the pilot hole 131 of the middle roofing material 130B due to capillary action, etc.

[0046] Rainwater that reaches the pilot holes 131 moves downward, that is, to the underlayment material 120 on the sheathing board 110, through the gap between the pilot holes 131 and the fastening nails 140. Because the sheathing board 110 is inclined, the rainwater that moves to the underlayment material 120 moves toward the lower roof material 130A.

[0047] For example, when the end portion on the ridge 11 side adjacent to the multiple fastening nails 140 is flat, as in the case of conventional roofing material 530 shown in Figure 8, rainwater moves as shown by the arrows and accumulates in the corner between the underlayment 120 and roofing material 530, as indicated by 500 in Figure 8. At this time, since the end portion on the ridge 11 side of roofing material 530 is adjacent to fastening nails 140 fastening roofing material 530, which is the middle layer roofing material stacked above, rainwater pool 500 is formed in the part of underlayment 120 penetrated by fastening nail 140.

[0048] In addition, once rainwater has accumulated in the rainwater puddle 500, it gradually moves downward from between the roofing material 530 and the underlayment material 120, but the amount of movement is small and the rainwater remains there for a long time. This accelerates the deterioration of the underlayment material 120, and the rainwater that spreads between the underlayment material 120 and the roofing material 530 causes the deterioration of the entire underlayment material 120. In addition, rainwater easily passes through the part where the fastening nails 140 of the underlayment material 120 penetrate to the sheathing board 110 side, and if the rainwater moves to the sheathing board 110, there is a risk that the sheathing board 110 will corrode or leak.

[0049] However, as shown in Figures 2 to 4, the roofing material 130 of this embodiment has a peak 130a formed at a position adjacent to the fastening nail 140 that fastens the overlapping roofing materials 130, and a sloped portion 130b is provided adjacent to the peak 130a. Therefore, as shown by the arrows in Figures 3 and 4, rainwater that has fallen into the corner between the underlayment material 120 and the peak 130a of the lower roofing material 130A moves from the peak 130a to the sloped portion 130b.

[0050] Then, the rainwater moves along the inclined portion 130b on the underlayment material 120 toward the eaves 12. Also, because the notch 130c is formed in the inclined portion 130b, the rainwater that moves along the inclined portion 130b on the underlayment material 120 concentrates and accumulates in the notch 130c. As a result, the rainwater is prevented from spreading in the second direction, so it accumulates in the notch 130c, and the water level becomes high even with a small amount of water.

[0051] Therefore, when the water level rises to the upper surface of the lower roofing material 130A, the rainwater moves into the gap between the lower roofing material 130A and the middle roofing material 130B, and moves from between the lower roofing material 130A and the middle roofing material 130B toward the eaves 12. In addition, since the lower end of the cutout portion 130c and the upper end of the apex 130a are separated in the first and second directions, the rainwater puddle 500 can be prevented from extending to the fastening nail 140.

[0052] In this way, the roofing material 130 can prevent water from accumulating in the portion of the underlayment material 120 through which the fastening nails 140 penetrate, and therefore can prevent rainwater from moving toward the sheathing board 110. Therefore, the roofing material 130 can prevent corrosion of the sheathing board 110 and the occurrence of rainwater leaks. In addition, since rainwater pools 500 can be generated in the cutouts 130c and rainwater can be efficiently drained toward the eaves 12 side, deterioration of the underlayment material 120 can be suppressed, and since the movement of rainwater between the underlayment material 120 and the lower roofing material 130A can be reduced, deterioration of the underlayment material 120 as a whole can be suppressed.

[0053] Furthermore, according to the roofing material 130 of this embodiment, the roofing material 130 has a top 130a provided at a position adjacent to the pilot hole 131 of the roofing material 130 placed on top. Therefore, when the roofing materials 130 are fastened with fastening nails 140, the top 130a of the roofing material 130 placed below supports the roofing material 130 above, and it is possible to prevent the roofing material 130 above from being damaged when the fastening nails 140 are driven in.

[0054] This effect will be specifically explained. First, the fastening nail 140 is driven in with a hammer, so that the head 141 hits the periphery of the pilot hole 131. At this time, if the end of the lower roofing material 130 is not present around the pilot hole 131 of the upper roofing material 130, the upper roofing material 130 will bend due to the impact (load) caused by the driving of the fastening nail 140, but the stress caused by the load applied to the upper roofing material 130 will be concentrated at the same position as the upper end of the lower roofing material 130. For this reason, if the position where the stress is concentrated is away from the pilot hole 131, the upper roofing material 130 fastened by the fastening nail 140 will be easily cracked.

[0055] However, the roofing material 130 of this embodiment has a top 130a, and a sloped portion 130b is provided adjacent to this top 130a. Therefore, even if the roofing material 130 has a sloped portion 130b, the top 130a of the lower roofing material 130 (lower roofing material 130A) is adjacent to the pilot hole 131 of the upper roofing material 130 (middle roofing material 130B). Therefore, even if an impact occurs when the fastening nail 140 is driven, the top 130a of the lower roofing material 130 can support the upper roofing material 130 near the pilot hole 131 of the upper roofing material 130, and the upper roofing material 130 can be prevented from being damaged.

[0056] According to the roofing material 130 of this embodiment, the cutout portion 130c can store rainwater, allowing the rainwater stored in the cutout portion 130c to overflow and flow over the roofing material 130. In addition, the cutout portion 130c can freely set the position where the rainwater flows depending on the position of the roofing material 130 in the second direction. For this reason, as described above, by setting the cutout portion 130c to a position shifted in the second direction from the pilot hole 131 in which the fastening nail 140 for fixing the roofing material 130 is arranged, that is, a position avoiding the pilot hole 131, it is possible to make it difficult for the rainwater overflowing from the cutout portion 130c to get on the pilot hole 131 and the fastening nail 140, as shown by the flow of rainwater by the arrow in FIG. 4, and it is possible to prevent the rainwater overflowing from the cutout portion 130c and flowing over the roofing material 130 from moving again from the pilot hole 131 to the sheathing board 110 and the underlayment 120 side.

[0057] As described above, according to the roofing material 130 and roof structure 1 of this embodiment, the end of the roofing material 130 on the ridge 11 side mainly receives the peak 130a and the slope 130b from the peak 130a to the eaves 12 side, thereby preventing rainwater from accumulating in the area where the fastening nail 140 of the underlayment material 120 penetrates. Also, by providing the roofing material 130 with the cutout 130c, rainwater that has flowed down the slope 130b can be effectively moved to the eaves 12 side.

[0058] The present invention is not limited to the above-mentioned embodiment. For example, the shape and arrangement of the top 130a, the inclined portion 130b, and the notch portion 130c of the above-mentioned roof material 130, as well as the number of the inclined portions 130b and the notch portions 130c, can be set appropriately. In addition, when a plurality of inclined portions 130b and the notch portions 130c are provided, some or all of them may have different shapes, and the inclination angle, number, and depth may be changed appropriately according to the expected flow of rainwater.

[0059] 4 to 6 show three examples of the roofing material 130 as examples of the apex 130a, the inclined portion 130b, and the cutout portion 130c, but are not limited to these examples. For example, in a case where two roofing materials 130 are stacked in the second direction above the roofing material 130 and there is a risk of rainwater infiltrating through the gap between the two roofing materials 130 butted together, depending on the expected rainwater, for example, two cutout portions 130c may be provided in addition to the space between the apexes 130a on the center side in the width direction of FIG. 6, or the depth of the cutout portion 130c may be increased, or multiple cutout portions 130c may be provided partially, or multiple cutout portions 130c may be provided between each of the apexes 130a.

[0060] In addition, the roofing material 130 may be configured to be laminated to roofing materials other than those described above, such as eaves roofing materials or ridge roofing materials. In other words, the roofing material 130 may be appropriately configured so long as it is arranged in a portion where multiple roofing materials are partially laminated.

[0061] The present invention is not limited to the above-mentioned embodiment, and can be modified in various ways without departing from the gist of the present invention. The embodiments may be combined as appropriate, and in that case, the combined effect can be obtained. Furthermore, the above-mentioned embodiment includes various inventions, and various inventions can be extracted by combinations selected from the multiple components disclosed. For example, if the problem can be solved and the effect can be obtained even if some components are deleted from all the components shown in the embodiment, the configuration from which the components are deleted can be extracted as an invention. The following provides a description equivalent to the invention described in the original claims of this application. [1] A roof material provided in a plurality of locations on a roof structure having an inclined sheathing board and an underlayment provided on the sheathing board, the roof material being arranged side by side on the underlayment in a direction from the ridge of the sheathing board toward the eaves and in a width direction perpendicular to the direction from the ridge to the eaves, and partially overlapping in the vertical direction, and fastened to the sheathing board with fastening nails, A plurality of holes for arranging the fastening nails are provided, A roofing material in which the upper end slopes in the width direction from the upper end toward the lower end, with the adjacent portions of the fastening nails that fasten the roofing materials arranged in a stacked manner above each other as apexes. [2] The roofing material described in [1], wherein the roofing material has a plurality of notches formed in a portion between adjacent peaks of the upper end portion. [3] The roofing material described in [2], wherein the cutout portion is positioned at a position offset in the width direction from the hole. [4] Sloping subfloor; An underlayment material provided on the roofing board; A plurality of roofing materials each having a plurality of holes, disposed on the underlayment and fastened to the sheathing board, arranged side by side in a direction from the ridge of the sheathing board toward the eaves end and in a width direction perpendicular to the direction from the ridge to the eaves end, and arranged with some parts overlapping in the vertical direction; A plurality of fastening nails are inserted into the holes to fasten the roof material to the sheathing board; Equipped with A roof structure in which the upper end of the roof material slopes in the width direction from the upper end toward the lower end, with the adjacent portions of the multiple fastening nails that fasten the roof materials arranged in a stack above each other as peaks. [5] The roof structure described in [4], wherein the roof material has a plurality of notches formed in a portion between adjacent peaks of the upper end portion. [6] A roof structure as described in [5], wherein the cutout portion is positioned at a position offset in the width direction from the hole. [Explanation of symbols]

[0062] 1...roof structure, 11...ridge, 12...eaves, 13...gables, 110...substrate board, 120...underlayment, 130...roof material, 130a...top, 130b...sloping portion, 130c...notch, 131...pilot hole, 140...fastening nail, 141...head, 142...nail portion, 142a...protrusion.

Claims

1. A roof structure having an inclined sheathing board and an underlayment provided on the sheathing board, the roof materials being arranged on the underlayment in a line on the sheathing board in a direction from the ridge to the eaves and in a width direction perpendicular to the direction from the ridge to the eaves, and partially overlapping in the vertical direction, and fastened to the sheathing board with fastening nails, A plurality of holes for arranging the fastening nails are provided, The upper end portion is inclined from the upper end portion toward the lower end portion in the width direction with the adjacent portions of the fastening nails that fasten the roof materials arranged in a stacked manner above as apexes, The roofing material has a plurality of notches formed in a portion of the upper end between adjacent peaks.

2. The roofing material according to claim 1 , wherein the cutout portion is positioned at a position offset in the width direction from the hole.

3. The inclined roofing board, An underlayment material provided on the roofing board; A plurality of roofing materials each having a plurality of holes, disposed on the underlayment and fastened to the sheathing board, arranged side by side in a direction from the ridge of the sheathing board toward the eaves end and in a width direction perpendicular to the direction from the ridge to the eaves end, and arranged with some parts overlapping in the vertical direction; A plurality of fastening nails are inserted into the holes to fasten the roof material to the sheathing board; Equipped with The upper end of the roofing material is inclined from the upper end toward the lower end in the width direction, with the portions where the plurality of fastening nails that fasten the roofing materials arranged in a stack above each other being adjacent as apexes, A roof structure, wherein the roof material has a plurality of notches formed in a portion of the upper end between adjacent peaks.

4. The roof structure according to claim 3 , wherein the cutout portion is positioned at a position offset in the width direction from the hole.

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