Roof structure manufacturing method and roof material installation method

Abstract

To provide a roof structure capable of firmly fixing an end roof material positioned at an end of a bending part side consisting of a corner ridge or a valley on a roof surface, hardly damaging the end roof material, and having excellent waterproofness.SOLUTION: A roof structure 1 includes a bending part-side roofing material 330 and an adjacent roofing material 340. The bending part-side roofing material 330 extends along a bending part 10 formed of a corner ridge or a valley. The adjacent roofing material 340 is adjacent to the bending part-side roofing material 330 on a side opposite to the bending portion 10. The adjacent roofing material 340 is cut at an end part of the bending part 10 side so that the bending part-side roofing material 330 becomes a width B1 of a predetermined size L or more. Each of the bending part-side roofing material 330 and the adjacent roofing material 340 is fixed to a roof substrate 2 by a fixing tool penetrating in a thickness direction. A waste plate 5 is provided on the back side of an abutting part between the bending part-side roofing material 330 and the adjacent roofing material 340.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a roof structure. Manufacturing method and roofing material installation method Regarding. [Background technology]

[0002] Patent Document 1 discloses a roofing material that is laid with the corner ridge core as the boundary. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 4-94016 Summary of the Invention [Problem to be solved by the invention]

[0004] However, roofing materials located at the end of a roof near a bend, such as a corner ridge or valley, can be easily separated from the roof underlayment due to wind penetration between the bend-side roofing material and the roof underlayment. To address this issue, it is possible to fix the end roofing material with fasteners such as nails. However, this requires the formation of holes in the end roofing material to allow the fasteners to pass through, which can cause stress to concentrate in the holes and damage the end roofing material.

[0005] The present invention has been made in consideration of the above-mentioned reasons, and provides a roof structure in which the roofing material on the side of the bent portion, which is formed by a corner ridge or a valley on the roof surface, can be firmly fixed, the roofing material on the side of the bent portion is less likely to be damaged, and the roof structure has excellent waterproofing. Manufacturing method and roofing material installation method The purpose is to provide. [Means for solving the problem]

[0006] A method for manufacturing a roof structure according to one aspect of the present invention is a method for manufacturing a roof structure including a refraction-side roofing material along a refraction portion consisting of a ridge or valley, and an adjacent roofing material adjacent to the refraction-side roofing material on the opposite side of the refraction portion. The width of the refraction-side roofing material is formed to be equal to or greater than a predetermined dimension. The width of the adjacent roofing material is not adjusted if it is expected that the width of the refraction-side roofing material will be equal to or greater than the predetermined dimension even if the width of the adjacent roofing material is not adjusted during the allocation of the refraction-side roofing material and the adjacent roofing material. If it is not expected that the width of the refraction-side roofing material will be equal to or greater than the predetermined dimension without adjusting the width of the adjacent roofing material during the allocation of the refraction-side roofing material and the adjacent roofing material, the width of the adjacent roofing material is adjusted by cutting the end of the adjacent roofing material on the refraction portion side so that the width of the refraction-side roofing material is equal to or greater than the predetermined dimension. Each of the refraction-side roofing material and the adjacent roofing material is fixed to the roof underlayment by fasteners penetrating through their thickness. Only when the width of the adjacent roof material is adjusted when allocating the refraction portion side roof material and the adjacent roof material, The refraction portion side roof material; The width is adjusted by cutting the end on the bending portion side. A scrap board is provided on the back side of the abutting portion with the adjacent roof material. One aspect of the present invention is a roofing material installation method for a roofing material comprising a refraction-side roofing material along a refraction portion consisting of a ridge or valley, and an adjacent roofing material adjacent to the refraction-side roofing material on the opposite side of the refraction portion. If the width of the refraction-side roofing material is expected to be greater than or equal to a predetermined dimension during the roofing material installation, the width of the adjacent roofing material is not adjusted. If the width of the refraction-side roofing material is expected to be less than the predetermined dimension during the roofing material installation, the edge of the adjacent roofing material adjacent to the refraction-side roofing material is cut to adjust the width so that the width of the refraction-side roofing material is the predetermined dimension. Each of the refraction-side roofing material and the adjacent roofing material is fixed to the roof underlayment with fasteners that penetrate through their thickness. Only when the width of the adjacent roof material is adjusted when allocating the refraction portion side roof material and the adjacent roof material, The refraction portion side roof material; The width is adjusted by cutting the end on the bending portion side. A waste board is provided on the back side of the abutting portion with the adjacent roof material. [Effects of the Invention]

[0007] Roof structure according to one aspect of the present invention Manufacturing method and roofing material installation methodThe roofing material can be firmly fixed at the end of the roof surface at the bent portion of the corner ridge or valley, making the end roofing material less likely to be damaged and providing excellent waterproofing. can . [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a roof structure according to one embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the corner ridge portion of the roof structure. [Figure 3] FIG. 3 is a plan view showing the layout of roof materials in the roof structure. [Figure 4] FIG. 4 is a plan view showing the layout of roofing materials in a comparative example. [Figure 5] FIG. 5A is a plan view of a flat portion scrap board provided in the roof structure, and FIG. 5B is a cross-sectional view taken along line AA in FIG. 5A. [Figure 6] FIG. 6 is a plan view of a corner ridge scrap board provided in the roof structure. [Figure 7] FIG. 7 is a plan view showing a state in which underlayment has been applied to the sheathing boards of the roof structure. [Figure 8] FIG. 8 is a plan view showing the state in which the starter is installed on the underlayment material. [Figure 9] FIG. 9 is a plan view showing the state in which a corner board is installed on the starter. [Figure 10] FIG. 10 is a plan view showing the state in which an adjacent roofing material is installed on the starter. [Figure 11] FIG. 11 is a plan view showing the state in which the roof material on the bending portion side is installed on the starter of the same. [Figure 12] FIG. 12 is a plan view showing a state in which a sealant is applied between a pair of roof materials on the bending portion side of the roof structure. [Figure 13] FIG. 13 is a plan view showing a state in which corner ridge scrap boards have been installed on the pair of roof materials on the bending portion side of the same. [Figure 14] FIG. 14 is a plan view showing the state in which the above roofing material has been installed. DETAILED DESCRIPTION OF THE INVENTION

[0009] (1) Implementation form Fig. 1 shows a roof structure 1 of this embodiment. A building having the roof structure 1 of this embodiment is, for example, a residential building where people live. Note that the building may be a non-residential building such as a store, factory, or warehouse, in addition to a residential building.

[0010] The roof structure 1 forms, for example, a hip roof. Note that the roof formed by the roof structure 1 is not limited to a hip roof, and may be a square roof, a gambrel roof, or the like. The roof structure of this embodiment has a bending portion 10 consisting of a corner ridge.

[0011] The roof structure 1 further comprises a roof underlayment 2 (see Figure 2) and a plurality of roof materials 3. The roof underlayment 2 serves as a base for the plurality of roof materials 3. As shown in Figure 2, the roof underlayment 2 has two inclined roof underlayment surfaces 20 adjacent to each other with a corner ridge (bending portion 10) in between.

[0012] As shown in FIG. 1 , in this embodiment, the upper end side (flat ridge side) of each roof subsurface 20 is defined as the "above-water side," and the lower end side (eaves side) of each roof subsurface 20 is defined as the "below-water side." The two directions along the roof subsurface 20 toward the above-water side and along the roof subsurface 20 toward the below-water side are defined as the "roof slope direction." Furthermore, for each roof subsurface 20, two horizontal directions that are perpendicular to the roof slope direction and opposite to each other are defined as the "lateral direction." The direction along the lateral direction toward the corner ridge is defined as the "corner ridge side," and the direction toward the opposite side from the corner ridge is defined as the "anti-corner ridge side." The "corner ridge side" is synonymous with the "side of the refraction portion 10," and the "anti-corner ridge side" is synonymous with the "opposite side of the refraction portion 10."

[0013] As shown in Fig. 2, the roof foundation 2 of this embodiment has sheathing boards 21 and underlayment material 22. The sheathing boards 21 are located on corner posts 23 and multiple rafters 24 fixed to the corner posts 23, and are fixed to the multiple rafters 24. The sheathing boards 21 are inclined so that the portions closer to the underwater side are positioned lower.

[0014] An underlayment material 22 is laid on the upper surface of the sheathing board 21. The underlayment material (waterproof sheet) 22 is, for example, a synthetic polymer-based underlayment material or asphalt roofing (including asphalt felt and modified asphalt roofing). Although not shown, the underlayment material 22 is laid in double on the upper surface of the corner ridge portion of the sheathing board 21. In other words, a predetermined width (for example, 1,000 mm) of underlayment material 22 is laid on the upper surface of the corner ridge portion of the sheathing board 21 on which the underlayment material 22 has been laid, so as to extend along the center of the corner ridge. The underlayment material 22 does not have to be laid in double.

[0015] The roof structure 1 of this embodiment further includes a plurality of starters 4 shown in Figure 8. The plurality of starters 4 are arranged at the underwater end of the roof substrate surface 20. Each starter 4 is formed in the shape of a flat plate along the roof substrate surface 20. Each starter 4 is placed at the underwater end of the roof substrate surface 20 and fixed to the roof substrate 2 with fasteners 11 such as nails or screws.

[0016] As shown in FIG. 1, multiple roofing materials 3 are laid on top of the roof underlayment 2 and starter 4. The multiple roofing materials 3 are laid in layers in order, starting from the roofing material 3 below the waterline toward the above-waterline side. The roofing materials 3 are formed in the shape of flat plates. The roofing materials 3 are, for example, slate tiles, and are manufactured by molding a cement-based molding material and curing it. The starter 4 described above may be formed from the same material as the roofing materials 3, or may be formed from a different material than the roofing materials 3.

[0017] As shown in Figure 3, multiple roofing materials 3 are staggered on the roof underlayment 2, with adjacent roofing materials 3 in the roof slope direction being offset laterally. Note that multiple roofing materials 3 may be installed on the roof underlayment 2 using a roofing method other than staggered. For example, adjacent roofing materials 3 in the roof slope direction may be installed on the roof underlayment 2 with their positions aligned laterally.

[0018] The roof materials 3 that are adjacent in the horizontal direction are butted against each other. The underwater edges of the roof materials 3 that are adjacent in the horizontal direction are arranged at the same position in the roof slope direction.

[0019] As is clear from Figures 13 and 14, the above-water portion of the lower roofing material 3 of adjacent roofing materials 3 in the roof slope direction forms a non-exposed portion 30 that is covered by the below-water portion of the upper roofing material 3, and the portion below the water beyond the non-exposed portion 30 forms an exposed portion 31 that is exposed to the outside. As shown in Figure 11, the below-water portion of the lowest roofing material 3 laid on the under-water end of the roof substrate 20 overlaps the starter 4 and covers the upper surface of the starter 4.

[0020] Each roofing material 3 has one or more fastener holes 32 formed therein. The fastener holes 32 of each roofing material 3 are formed in the non-exposed portion 30. The fastener holes 32 penetrate the roofing material 3 in the thickness direction. The fastener holes 32 are formed, for example, when the roofing material 3 is manufactured. The fastener holes 32 may also be formed at the construction site. Fasteners 12 penetrate the fastener holes 32. Each roofing material 3 is fixed to the roof underlayment 2 by fasteners 12 that are driven through the fastener holes 32 and into the sheathing boards 21. The fasteners 12 are, for example, nails or screws.

[0021] As shown in Figure 1, the multiple roofing materials 3 include a roofing material 33 adjacent to the corner ridge and a roofing material 34 adjacent to the opposite corner ridge side of this roofing material 33. Hereinafter, roofing material 33 will be referred to as the bent portion side roofing material 33, and roofing material 34 will be referred to as the adjacent roofing material 34. Of the multiple roofing materials 3 lined up in a row horizontally on the roof base surface 20 (see Figure 2), the roofing material 3 closest to the corner ridge is the bent portion side roofing material 33, and the roofing material 3 second closest to the corner ridge is the adjacent roofing material 34.

[0022] As shown in Figure 11, the refraction-section-side roofing material 33 has an end face on the corner ridge side that slopes along the corner ridge and an end face on the anti-corner ridge side that runs in the direction of the roof slope. The dimension of the refraction-section-side roofing material 33 in the roof slope direction is approximately the same as the dimension of the adjacent roofing material 34 in the roof slope direction. As shown in Figure 3, the width B1, which is the lateral dimension of the refraction-section-side roofing material 33, is smaller than the width B2, which is the lateral dimension of the adjacent roofing material 34. The refraction-section-side roofing material 33 is formed, for example, by cutting the lateral end of the adjacent roofing material 34 using a cutting machine such as a manual cutter or an electric cutter.

[0023] The adjacent roofing material 34 is formed in the shape of a roughly rectangular plate extending laterally. Specifically, the adjacent roofing material 34 is formed in the shape of a hexagonal flat plate with the corners of both ends above the waterline cut off (see Figure 11). As shown in Figure 11, the retracted portion-side roofing material 33 is laid on the roof underlayment 2 with its end face on the non-corner ridge side butted against the end face on the corner ridge side of the adjacent roofing material 34. As shown in Figure 1, the upper surface of the exposed portion 31 of the retracted portion-side roofing material 33, including the end on the corner ridge side, is entirely exposed and not covered by other members.

[0024] 11, the refraction-side roofing material 33 of this embodiment, like the other roofing materials 3, is firmly fixed to the roof underlayment 2 by fasteners 12. Therefore, even if the refraction-side roofing material 33 is blown by wind blowing from the corner ridge side, the refraction-side roofing material 33 is unlikely to come off the roof underlayment 2.

[0025] For example, as shown in Figure 4, if the width B1 of the refraction-side roofing material 33 is small and this refraction-side roofing material 33 is fixed to the roof underlayment 2 with fasteners such as screws or nails, the distance from the hole in the refraction-side roofing material 33 through which the fastener passes to the end face on the corner ridge side or anti-corner ridge side of the refraction-side roofing material 33 will be small, and there is a risk that the refraction-side roofing material 33 will be damaged when an external force is applied. To improve this issue, each refraction-side roofing material 33 in this embodiment is formed so that the width B1 is at least equal to or greater than a predetermined dimension L, as shown in Figure 3.

[0026] In this embodiment, if it is expected that the width B1 of the refraction-side roofing material 33 will be less than a predetermined dimension when multiple roofing materials 3 are allocated, the width B2 of the adjacent roofing material 34 adjacent to the refraction-side roofing material 33 is adjusted so that the refraction-side roofing material 3 has a width B1 that is the predetermined dimension L. The predetermined dimension L is, for example, 400 mm.

[0027] In Figure 3, for ease of understanding, the refraction section-side roofing material 33 having a width B1 of the predetermined dimension L is indicated by a dot. Hereinafter, as necessary, this refraction section-side roofing material 33 will be referred to as the enlarged refraction section-side roofing material 330. In addition, the adjacent roofing material 34 adjacent to the anti-corner ridge side of the enlarged refraction section-side roofing material 330 will be referred to as the adjusted adjacent roofing material 340.

[0028] The width B2 of the adjusted adjacent roof material 340 is adjusted so that the width B1 of the roof material 330 on the expansion / refraction section side becomes the predetermined dimension L. This adjustment is made by cutting the edge on the corner ridge side of the roof material used as the adjacent roof material 34 using a cutting machine such as a manual cutter or an electric cutter. Note that if it is expected that the width B1 of the roof material 33 on the refraction section side will be equal to or greater than the predetermined dimension when the roof materials 3 are laid out, the width B2 of the adjacent roof material 34 is not adjusted.

[0029] As shown in Figure 12, a sealant 13 is provided between the non-exposed portions 30 of a pair of roofing materials 33 on the bent portion side that are laid on either side of the corner ridge. The sealant 13 is a wet type, such as a cured product of modified silicone. Note that sealants 14A, 14B, 15, 17A, 17B, and 18, which will be described later, are also made of the same material as the sealant 13.

[0030] The sealant 13 is provided only in the area corresponding to the non-exposed portion 30 between a pair of refraction-section-side roofing materials 33 laid on either side of the corner ridge, and is not provided in the area corresponding to the exposed portion 31. The sealant 13 seals between the non-exposed portions 30 of the pair of refraction-section-side roofing materials 33. Therefore, even if rainwater on the exposed portions 31 of the pair of refraction-section-side roofing materials 33 laid on either side of the corner ridge is blown back toward the water by the wind, the sealant 13 prevents this rainwater from penetrating between the non-exposed portions 30 of the pair of refraction-section-side roofing materials 33 and into the roof underlayment 2. Note that in Figure 12 and other figures, the sealant 13 is provided linearly along the center of the corner ridge, but this is not limited to this and may be provided in a substantially circular shape, for example.

[0031] As shown in Figure 3, the roof structure 1 of this embodiment further includes a plurality of waste boards 5. Hereinafter, the waste boards 5 will be referred to as flat section waste boards 5. The flat section waste boards 5 are placed on the refraction section side roof material 33 or the starter 4 on the back side of the butt joint between the expansion refraction section side roof material 330 (refraction section side roof material 33 having a width B1 of predetermined dimension L) and the adjusted adjacent roof material 340 (adjacent roof material 34 having an adjusted width B2) adjacent to this expansion refraction section side roof material 330 (see Figure 10).

[0032] The flat section scrap board 5 is formed, for example, by bending a metal plate. As shown in Figures 5A and 5B, the flat section scrap board 5 has a water receiving portion 50 and a hook portion 51. The water receiving portion 50 is formed in the shape of a plate that follows the surface of the refraction section side roof material 33 or starter 4 located on the back side, and receives rainwater that seeps in between the expansion refraction section side roof material 330 located on the front side and the adjustment adjacent roof material 340 (see Figure 3).

[0033] The underwater edge of the flat section scrap board 5 (the underwater edge of the water-receiving section 50) is positioned above the water than the underwater edges of the front-side roof material 330 on the expanding and bending section side and the adjusting adjacent roof material 340, or is positioned at the same position in the roof slope direction as the underwater edges of the front-side roof material 330 on the expanding and bending section side and the adjusting adjacent roof material 340 (see Figure 3). The flat section scrap board 5 is not exposed above the roof.

[0034] The hook portion 51 protrudes from the above-water edge of the water receiving portion 50 toward the roof underlayment 2. The flat section discard board 5 is restricted from moving below water by the hook portion 51 getting caught on the above-water edge of the bent section roof material 33 or starter 4 located on the reverse side.

[0035] Weir portions 52 to 54 that protrude upward are formed on the above-water end and both lateral ends of the water receiving portion 50. Weir portion 52, located at the above-water end of the water receiving portion 50, prevents rainwater received in the water receiving portion 50 from flowing back toward the above-water side. Weir portion 53, located at the corner ridge end of the water receiving portion 50, prevents rainwater received in the water receiving portion 50 from flowing out toward the corner ridge. Weir portion 54, located at the anti-corner ridge end of the water receiving portion 50, prevents rainwater received in the water receiving portion 50 from flowing out toward the anti-corner ridge side.

[0036] As mentioned above, the end portion on the corner ridge side of the adjusting adjacent roof material 340 shown in Figure 3 has been cut off, and the distance between the fastener holes 32 (see Figure 10) of the adjusting adjacent roof material 340 and the adjacent refraction section side roof material 33 (the end face on the corner ridge side of the adjacent roof material 34) is shorter than that of the other adjacent roof materials 34. For this reason, if rainwater seeps in from the butt portion between the expanding refraction section side roof material 330 and the adjusting adjacent roof material 340, there is a risk that this rainwater will seep into the roof underlayment 2 side from the point where the fasteners 12 that secure the adjusting adjacent roof material 340 have been driven into the roof underlayment surface 20.

[0037] However, in this embodiment, rainwater seeping in from the joint between the expansion refraction section side roofing material 330 and the adjusting adjacent roofing material 340 is received by the flat section waste board 5 and then flows to the downstream side. This prevents rainwater from seeping into the roof underlayment 2 from the points where the fasteners 12 that secure the adjusting adjacent roofing material 340 are driven into the roof underlayment surface 20.

[0038] The roof structure 1 of this embodiment further includes a plurality of scrap boards 6 (see FIG. 13). Hereinafter, these scrap boards 6 will be referred to as corner ridge scrap boards 6. The corner ridge scrap boards 6 are provided for each pair of bent-section-side roof materials 33 that are laid on either side of the corner ridge, and are lined up along the corner ridge.

[0039] As shown in Figure 13, the corner ridge scrap board 6 is placed across the unexposed parts 30 of a corresponding pair of refraction section side roofing materials 33, and receives rainwater that seeps in between a pair of refraction section side roofing materials 33 (see Figure 14) placed on the front side of the pair of refraction section side roofing materials 33, and drains it downstream.

[0040] The corner ridge scrap board 6 is placed only on the unexposed portion 30 of the unexposed portion 30 and exposed portion 31 of the pair of refraction-side roofing materials 33 located on the back side of it, and is not placed on the exposed portion 31. Therefore, the corner ridge scrap board 6 is covered by the pair of refraction-side roofing materials 33 located on the front side thereof and is not exposed externally. In the direction along the corner ridge, the upper end of the corner ridge scrap board 6 protrudes above the pair of refraction-side roofing materials 33 located on the back side thereof.

[0041] The corner ridge scrap board 6 is formed, for example, by bending a metal plate. The corner ridge scrap board 6 of this embodiment is formed symmetrically with respect to the corner ridge. As shown in FIG. 6, the corner ridge scrap board 6 has a pair of board portions 60 positioned on either side of the corner ridge. Each of the pair of board portions 60 is formed in a plate shape that follows the unexposed portions 30 of a pair of bent-section-side roofing materials 33 (see FIG. 13) that are laid across the corner ridge. Each board portion 60 is formed in a roughly right-angled triangle shape and has a hypotenuse that extends along the corner ridge. In the corner ridge scrap board 6, the edge on the corner ridge side that forms the hypotenuse of one board portion 60 is connected to the edge on the corner ridge side that forms the hypotenuse of the other board portion 60.

[0042] Each plate portion 60 of the corner ridge scrap board 6 has a hole 62 formed therethrough in the thickness direction of the plate portion 60. The hole 62 is formed, for example, when the corner ridge scrap board 6 is manufactured. Note that the hole 62 may also be formed at the construction site.

[0043] A fastener 16 (see Figure 13) passes through each hole 62. The fastener 16 shown in Figure 13 is, for example, a nail or a screw. The fastener 16 that passes through each hole 62 passes through the corresponding bent-section roof material 33 located on the back side of the corner ridge scrap board 6 and is driven into the roof underlayment 2. The corner ridge scrap board 6 is fixed to the roof underlayment 2 by the fastener 16.

[0044] The corner ridge scrap board 6 of this embodiment further has a pair of water deflectors 61 provided on each of the pair of board sections 60. The water deflectors 61 protrude toward the corner ridge from the edge of the corresponding board section 60 on the anti-corner ridge side along the upper surface of the board section 60. The water deflectors 61 are formed, for example, by folding back the anti-corner ridge side end of the metal plate that makes up the board section 60 toward the corner ridge side. The water deflectors 61 prevent rainwater on the board section 60 from flowing out toward the anti-corner ridge side.

[0045] The angle θ (see FIG. 2) between the pair of board portions 60 of the corner ridge scrap board 6 can be adjusted according to the roof slope, for example, by adjusting the degree to which one board portion 60 is bent relative to the other board portion 60. This allows a common corner ridge scrap board 6 to be used even if the roof slopes are different.

[0046] The angle θ between the pair of boards 60 of the corner ridge scrap board 6 increases as the roof slope becomes gentler, and the underwater edge of each board 60 spreads outward in the direction of the roof slope. Therefore, when the roof slope is gentle, each board 60 of the corner ridge scrap board 6 may protrude below the waterline beyond the bent-section roofing material 33 (see Figure 1) located on its front side, which may detract from the appearance.

[0047] To improve this point, the corner ridge scrap board 6 of this embodiment has a shape such that when it is installed on a roof with the gentlest roof slope among the roofs for which construction is expected, the underwater edge of each board section 60 is covered by the roof material 33 on the front side of the refraction section.

[0048] For example, if the roof slope for which the corner ridge scrap board 6 is to be installed is set to a slope of 3 sun or more and 6 sun or less, when the roof slope is the smallest 3 sun slope, the corner ridge scrap board 6 is formed so that the underwater edge of each board portion 60 is parallel to the underwater edge of the front-side bent-section roofing material 33 and is covered by the front-side bent-section roofing material 33. Therefore, for example, when the roof slope is steeper than 3 sun slope, the underwater edge of each board portion 60 will be positioned above the water compared to when the roof slope is the gentlest, and each board portion 60 will be covered by the front-side bent-section roofing material 33 and not exposed, just like when the roof slope is gentle.

[0049] The boundary between the pair of board sections 60 in the corner ridge scrap board 6 is adhered to the pair of rear-side bent section roofing materials 33 via sealant 13 (see Figure 12) located on the rear side of the corner ridge scrap board 6. In the direction along the corner ridge, the lower end of the sealant 13 is located at a point corresponding to the upper end of the corner ridge scrap board 6 located further below this sealant 13, and the lower end of the sealant 13 is located between the two corner ridge scrap boards 6 lined up along the corner ridge.

[0050] Rainwater that seeps in between the exposed sections 31 of a pair of tilt-side roofing materials 33 that are laid on either side of the corner ridge is caught by the corner ridge scrap board 6 located behind the gap. When the rainwater caught by the corner ridge scrap board 6 in this way is blown by the wind and flows back over the corner ridge scrap board 6 toward the water, the sealant 13 prevents this rainwater from seeping in between the corner ridge scrap board 6 and the pair of tilt-side roofing materials 33 (the pair of tilt-side roofing materials 33 located on the front side of the corner ridge scrap board 6), and between the pair of tilt-side roofing materials 33 and the upper corner ridge scrap board 6 located on the front side of the former.

[0051] As shown in Figure 9, the roof structure 1 of this embodiment further includes a corner ridge scrap board 7 for the starter 4. This corner ridge scrap board 7 has a similar configuration to the corner ridge scrap board 6. For this reason, in the following, elements of the corner ridge scrap board 7 that are common to those of the corner ridge scrap board 6 will be given the same reference numerals, and only the differences between the corner ridge scrap board 7 and the corner ridge scrap board 6 will be explained, and explanations of overlapping points will be omitted.

[0052] The corner ridge scrap board 7 is placed across a pair of starters 4 located on either side of the corner ridge, and receives rainwater that seeps in between a pair of refraction-side roofing materials 33 (see Figure 12) located on the front side and directs it downstream. Like the corner ridge scrap board 6, the corner ridge scrap board 7 has a shape such that the downstream edge of each board section 60 is covered by the front-side roofing material 3 when installed on a roof with the gentlest roof slope of all the roofs for which installation is expected. The corner ridge scrap board 7 is fixed to the roof underlayment 2 with fasteners 19 that pass through each hole 62 in the corner ridge scrap board 7 and the starters 4.

[0053] As shown in Figure 13, the refraction-side roofing materials 33 other than the lowest refraction-side roofing material 33 are adhered to the corner ridge scrap board 6 and adjacent roofing material 34 located on the back side of the refraction-side roofing material 33 via sealants 14A, 14B applied to the surface of the corner ridge scrap board 6 and sealant 15 applied to the surface of the adjacent roofing material 34. For this reason, the refraction-side roofing material 33 is unlikely to come off the roof underlayment 2 even when blown by the wind.

[0054] 13, the sealant 14A, 14B is applied only to one board portion 60 of the corner ridge scrap board 6, but in reality, the sealant 14A, 14B is applied to each board portion 60. Also, in FIG. 13, the sealant 15 is applied only to one of the pair of adjacent roofing materials 34 that are laid on either side of the corner ridge, but in reality, the sealant 15 is applied to the pair of adjacent roofing materials 34 that are laid on either side of the corner ridge.

[0055] The sealant 14A is provided along the corner ridge core at a position a predetermined distance away from the corner ridge core on the surface of each board portion 60 of the corner ridge scrap board 6. Therefore, even if rainwater received by the corner ridge scrap board 6 passes between the exposed portions 31 of the pair of bent-section-side roof materials 33 and flows toward the anti-corner ridge side, the sealant 14A will block this rainwater and allow it to be drained along the corner ridge.

[0056] The sealant 14B is applied in a straight line extending in the direction of the roof slope to the surface of each board portion 60 of the corner ridge scrap board 6. Therefore, even if rainwater received by the corner ridge scrap board 6 passes between the exposed portions 31 of the pair of bent-section-side roofing materials 33 and flows over the sealant 14A toward the anti-corner ridge side, the sealant 14B blocks this rainwater and prevents it from spreading toward the anti-corner ridge side. Therefore, the rainwater received by the corner ridge scrap board 6 is also prevented from infiltrating into the roof underlayment 2 through the butt joint between the bent-section-side roofing material 33 and the adjacent roofing material 34 located on the back side of the corner ridge scrap board 6.

[0057] In addition, a portion of the sealant 14B is also applied to the fastener 16 that penetrates the corner ridge scrap board 6. A portion of this sealant 14B seals the hole 62 through which the fastener 16 penetrates the corner ridge scrap board 6. This prevents rainwater from seeping through the hole 62 to the roof underlayment 2 side.

[0058] The sealant 15 is applied to the surface of the non-exposed portion 30 of the adjacent roofing material 34 in a portion that corresponds to the end of the non-corner ridge side of the refraction section side roofing material 33 that is placed on this front side, and bonds the non-exposed portion 30 of the adjacent roofing material 34 to the end of the non-corner ridge side of the refraction section side roofing material 33 that is placed on this front side. Note that the sealants 14, 15 may also be adhesives.

[0059] 10, the lowermost refraction-section-side roofing material 33 of this embodiment, like the other refraction-section-side roofing materials 33, is adhered to the corner ridge scrap board 6 and the starter 4 via sealants 17A, 17B applied to the surface of the corner ridge scrap board 6 and sealant 18 applied to the surface of the starter 4. Note that the sealants 17A, 17B, 18 may be adhesive.

[0060] The roofing material 3 of this embodiment is installed, for example, as follows. First, as shown in FIG. 7, underlayment material 22 is laid on sheathing boards 21. Next, as shown in FIG. 8, starter 4 is placed on the underwater end of roof underlayment surface 20 and fixed to roof underlayment 2 with fasteners 11. Next, as shown in FIG. 9, corner ridge scrap boards 7 are placed so as to straddle a pair of starters 4 sandwiching the corner ridge, and fixed to roof underlayment 2 with fasteners 19. Next, as shown in FIGS. 10 and 11, the lowest roofing material 3 is placed on roof underlayment surface 20, starter 4, and corner ridge scrap boards 7, and fixed to roof underlayment 2 with fasteners 12. At this time, if the adjacent roofing material 34 is an adjusting adjacent roofing material 340, the adjacent roofing material 34 is placed on the starter 4 via flat section scrap boards 5, as shown in FIG. 10, and fixed to roof underlayment 2 with fasteners 12. In addition, after sealing materials 17, 18 have been applied to the corner ridge scrap board 7 and the starter 4, the roof material 33 on the refraction side (see Figure 11) is placed on the corner ridge scrap board 7 and the starter 4 with sealing materials 17, 18 interposed between them, and in this state is fixed to the roof underlayment 2 by the fixing device 12.

[0061] After all of the lowest roofing materials 3 have been laid in this manner, sealant 13 is applied between the unexposed portions 30 of the pair of lowest roofing materials 3 sandwiching the corner ridge, as shown in Figure 12. Next, as shown in Figure 13, a corner ridge scrap board 6 is placed on the pair of lowest roofing materials 33 on the bent section side sandwiching the corner ridge, with sealant 13 interposed between them, and fixed to the roof underlayment 2 with fasteners 16. Next, the second-lowest roofing material 3 (see Figure 14) is placed on the roof underlayment surface 20, the lowest roofing material 3, and the lowest corner ridge scrap board 6, and fixed to the roof underlayment 2 with fasteners 12. At this time, as shown in FIG. 13, the second-lowest roofing material 33 on the bent section side (see FIG. 14) is placed on the corner ridge scrap board 6 and the lowest adjacent roofing material 34 via the sealants 14, 15 after the corner ridge scrap board 6 and the lowest adjacent roofing material 34 have been applied with sealants 14, 15, and in this state is fixed to the roof underlayment 2 by the fasteners 12. Then, roofing materials 3 are laid in the same manner from then on, toward the water side, until multiple roofing materials 3 are laid over the entire roof underlayment 2, as shown in FIG. 14. In this case, if the adjacent roofing material 34 is an adjusting adjacent roofing material 340, this adjacent roofing material 34 is fixed to the roof underlayment 2 by the fasteners 12 while being placed on the bent section side roofing material 33 and the adjacent roofing material 34 on the back side via the flat section scrap board 5.

[0062] The above-described embodiment can be modified as needed. For example, the shape, size, position, number, and material of each of the roof underlayment 2, roof material 3, starter 4, corner ridge scrap boards 6 and 7, and sealing materials 13 to 15, 17, and 18 included in the roof structure 1 can be modified as needed. Furthermore, in this embodiment, an example in which the present invention is applied to a roof where the bending portion 10 is a corner ridge has been described, but the present invention can also be applied to a roof where the bending portion 10 is a valley.

[0063] (2) Mode As is clear from the embodiment described above, the roof structure 1 of the first aspect has the following configuration. The roof structure 1 comprises a refraction-section-side roofing material (expansion refraction-section-side roofing material) 330 and an adjacent roofing material (adjusting adjacent roofing material) 340. The refraction-section-side roofing material 330 is aligned along the refraction section 10, which is formed by a corner ridge or a valley. The adjacent roofing material 340 is adjacent to the refraction-section-side roofing material 330 on the side opposite the refraction section 10. The adjacent roofing material 340 has its end cut off on the refraction-section-side roofing material 330's width B1, which is equal to or greater than the predetermined dimension L. The refraction-section-side roofing material 330 and the adjacent roofing material 340 are each fixed to the roof underlayment 2 by fasteners 12 that penetrate through their thickness direction. A scrap board (flat section scrap board) 5 is provided on the back side of the butt joint between the refraction-section-side roofing material 330 and the adjacent roofing material 340.

[0064] According to this embodiment, the refraction-section-side roofing material 330 can be firmly fixed to the roof underlayment 2 by the fasteners 12. This prevents the refraction-section-side roofing material 330 from being dislodged by wind blowing from the refraction section 10 side. Furthermore, by cutting the end of the adjacent roofing material 340 on the refraction section 10 side, the width B1 of the refraction-section-side roofing material 330 becomes equal to or greater than the predetermined dimension L. This makes the refraction-section-side roofing material 330 less likely to be damaged. Furthermore, rainwater seeping in from the butt portion between the refraction-section-side roofing material 330 and the adjacent roofing material 340 is received by the backsplash 5 and then flows downstream. This prevents rainwater from seeping into the roof underlayment 2 through the holes 32 pierced by the fasteners 12 in the adjacent roofing material 340. [Explanation of symbols]

[0065] B1 width L specified dimension 1. Roof structure 10 Refraction 12 Fixtures 330 Expansion bending section side roof material (Bending section side roof material) 340 Adjustment adjacent roof material (adjacent roof material) 5 Scrapboard

Claims

1. A roofing material on the side of the bent portion along the bent portion consisting of a corner ridge or a valley; A method for manufacturing a roof structure comprising: an adjacent roof material adjacent to the refraction portion side roof material on the opposite side of the refraction portion; The width of the roof material on the refraction portion side is formed to be equal to or greater than a predetermined dimension, The width of the adjacent roofing material is The roofing material on the refraction side and the adjacent roofing material are not adjusted if it is expected that the width of the adjacent roofing material will be greater than a predetermined dimension when the refraction side roofing material and the adjacent roofing material are allocated. The roofing material on the refraction side is then cut off from the adjacent roofing material to adjust the width of the refraction side roofing material to the predetermined dimension. The roofing material on the side of the bending portion and the adjacent roofing material are fixed to the roof substrate by fasteners that penetrate the roofing material in the thickness direction, The roofing material is then cut off from the roofing wall, and the roofing material is then attached to the roofing wall. Method of manufacturing roof structure.

2. A roofing material on the side of the bent portion along the bent portion consisting of a corner ridge or a valley; A method for installing a roof material comprising an adjacent roof material adjacent to the refraction portion side roof material on the opposite side of the refraction portion, When the width of the roof material on the refraction section side is expected to be greater than a predetermined dimension when the roof material is allocated, the width of the adjacent roof material is not adjusted, If the width of the roofing material on the refraction section side is expected to be less than the predetermined dimension when the roofing material is allocated, the width is adjusted by cutting the end of the adjacent roofing material adjacent to the refraction section side roofing material so that the width of the refraction section side roofing material becomes the predetermined dimension; The roofing material on the side of the bending portion and the adjacent roofing material are fixed to the roof substrate by fasteners that penetrate the roofing material in the thickness direction; The roofing material is then cut off from the roofing wall, and the roofing material is then cut off from the roofing wall. How to install roofing materials.

Images