gable structure

Abstract

To provide a gable structure with excellent water-sealing properties. [Solution] The roofing system comprises a roof base 10, roofing material 2, a flashing member 5, a gable wrap 6, and a waterproofing material 7. The roofing material 2 is placed on the roof base 10. The flashing member 5 is placed along the gable end 21 of the roofing material 2 and is provided on the roof base 10. The gable wrap 6 is fixed to the flashing member 5. The gable end 21 is placed along the direction in which the roof gable extends and has a plurality of stepped portions 210 aligned in the direction in which the gable extends. The flashing member 5 has a support portion 52 to which the covering piece 61 of the gable wrap 6 is fixed. The covering piece 61 is located above the gable end 21. The waterproofing material 7 is placed between the gable end 21 and the covering piece 61.

Description

Technical Field

[0001] This disclosure relates to a lizard (tsuchinoko) structure of a roof. More specifically, this disclosure relates to a lizard structure provided with a lizard wrap.

Background Art

[0002] Patent Document 1 discloses the structure of the lizard part of a roof. The structure of the lizard part of this roof includes a roofing material and a lizard decorative material, and is configured to cover the lizard part of the roof with the lizard decorative material.

[0003] On the roof, at least ridges and valleys are alternately formed in a direction substantially orthogonal to the eaves-ridge direction on the outer skin, and step portions are formed at intervals in the eaves-ridge direction.

[0004] The lizard decorative material includes a cap part and a cover part hanging down from one side of this cap part, and a locking piece protruding upward is provided at one end in the length direction of the cap part and a fixing piece fixed to the above-mentioned ridge, and a locked piece capable of being locked to the above-mentioned locking piece is provided at the other end.

[0005] Then, the plurality of lizard decorative materials are arranged side by side in the length direction of the ridge on the covering side or the laying-in side of the outer skin of the lizard part, the cap part is fitted on the upper surface of the ridge between the lower step portion and the upper step portion in the ridge, and the cover part is arranged to cover the roof end face of the lizard part. The fixing piece is fixed to the ridge with one end in the length direction of the cap part along the upper step portion, the locked piece provided at the one end locks the locked piece of the upper lizard decorative material, and the locked piece provided at the other end is locked to the locking piece of the lower lizard decorative material.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

[0007] In the roof gable structure described above, the presence of a step in the roof can create a gap between the roof and the gable trim, allowing rainwater to penetrate through this gap to the roof underlayment. Therefore, there was a need to improve the watertightness of the roof gable.

[0008] This disclosure aims to provide a gable structure with excellent water-sealing properties. [Means for solving the problem]

[0009] A gable structure according to one aspect of the present disclosure comprises a roof base, roofing material disposed on the roof base, a flashing member disposed along the gable end of the roofing material and fixed to the roof base, a gable wrap fixed to the flashing member, and a waterproofing material. The gable end is disposed along the direction in which the roof gable extends and has a plurality of stepped portions aligned in the direction in which the gable extends. The flashing member has a support portion to which a covering piece of the gable wrap is fixed. The covering piece is located above the gable end. The waterproofing material is disposed between the gable end and the covering piece. [Effects of the Invention]

[0010] According to this disclosure, the covering piece is not fixed to the roofing material but to the flashing member, so fasteners such as screws for fixing the covering piece are not driven into the roofing material, resulting in a gable structure that is less likely to have its watertightness compromised. In addition, since the watertight material is placed between the gable end and the covering piece to seal the gap, even if there are multiple steps at the gable end, rainwater is less likely to penetrate from between the gable end and the covering piece, resulting in a gable structure with excellent watertightness. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a cross-sectional view showing the gable structure according to this embodiment. [Figure 2] Figure 2 is a cross-sectional view showing the gable structure of the same structure. [Figure 3] Figure 3 is a perspective view showing two roofing materials aligned in the direction of the flow shown above. [Figure 4] Figure 4 is a perspective view showing the roof structure of the same building. [Figure 5] Figure 5 is a perspective view showing the roofing material described above. [Figure 6] Figure 6A is a partial perspective view showing the gable wrapper shown above. Figure 6B is a partial perspective view showing the drainage member shown above. [Figure 7] Figures 7A and 7B are cross-sectional views showing the gable structure of the same structure. [Figure 8] Figures 8A and 8B are cross-sectional views showing the same comparative example. [Modes for carrying out the invention]

[0012] The present disclosure will be described below based on the embodiments shown in the attached drawings, but the present disclosure is not limited to the embodiments described below, and appropriate design modifications are possible within the scope intended by the present disclosure.

[0013] (Embodiment) (1) Overview As shown in Figures 1, 2 and 7A and B, the gable structure 1 of this embodiment comprises a roof base 10, roofing material 2, a flashing member 5, a gable wrap 6, and a waterproofing material 7. The roofing material 2 is placed on the roof base 10. The flashing member 5 is placed along the gable end 21 of the roofing material 2 and fixed to the roof base 10. The gable wrap 6 is fixed to the flashing member 5. The gable end 21 is placed along the direction in which the gable of the roof extends and has a plurality of stepped portions 210 aligned in the direction in which the gable extends. The flashing member 5 has a support portion 52 to which the covering piece 61 of the gable wrap 6 is fixed. The covering piece 61 is located above the gable end 21. The waterproofing material 7 is placed between the gable end 21 and the covering piece 61.

[0014] In this embodiment, since the covering piece 61 is not fixed to the roofing material 2 but is fixed to the waste water drainage member 5, fixtures such as screws for fixing the covering piece 61 are not driven into the roofing material 2. Therefore, in this embodiment, holes are not formed in the roofing material 2 by the fixtures for fixing the ridge wrap 6, and the water tightness is hardly impaired. Further, since the water stop material 7 is disposed between the ridge end 21 and the covering piece 61 to close the gap, even if there are a plurality of stepped portions 210 in the roofing material 2, rainwater is unlikely to penetrate between the ridge end 21 and the covering piece 61. Therefore, in this embodiment, the water tightness is excellent.

[0015] (2) Details The ridge structure 1 of this embodiment shown in FIGS. 1 and 2 can be formed in a roof structure 100 as shown in FIG. 4. The building to which the roof structure 100 is applied may be any of a residential building, a non-residential building, or a composite building. The residential building is, for example, a detached house or an apartment house. The non-residential building is, for example, a store, a warehouse, a factory, or an assembly hall. The composite building is a building having a portion used for residential purposes and a portion used for non-residential purposes.

[0016] <Roof base> The roof base 10 is the base of a plurality of roofing materials 2. The roof base 10 has, for example, a plank 11 and an underlay material 12 laid on the upper surface of the plank 11. In this case, the upper surface of the underlay material 12 is the upper surface of the roof base 10. A purlin 15 and a cross member 16 are provided on the roof base 10. The purlin 15 is a member for attaching the ridge wrap 6 to the roof base 10. The cross member 16 is a member for attaching the waste water drainage member 5 to the roof base 10. Note that the roof base 10 may not have the underlay material 12. Further, the roof base 10 is not limited to having the plank 11 and may be composed of, for example, a plurality of horizontal members. Further, when the roofing material 2 is used for renovation, the roof base 10 may be composed of an existing roofing material.

[0017] Above the roof space 10, a plurality of roofing materials 2 are laid side by side in the flow direction and the lateral direction. In the present disclosure, the "flow direction" is the direction in which rainwater flows on the roof surface formed by the roof structure 100, which is parallel to the gradient direction of the roof surface and is the direction toward the lower side of the water. Here, the "roof surface" is one surface of the upper surface of the roof formed by the roof structure 100 and has a certain gradient. For example, when the roof structure 100 forms a single-slope roof, the roof structure 100 has only one roof surface. For example, when the roof structure 100 forms a gable roof, the roof structure 100 has two roof surfaces. Note that the roof structure 100 may have three or more roof surfaces. In the present disclosure, the "lateral direction" means the horizontal direction orthogonal to the flow direction.

[0018] <Roofing material> Each roofing material 2 is formed by bending a single metal plate, and is formed by, for example, pressing. The metal plate constituting each roofing material 2 is, for example, a painted steel plate, a galvanized steel plate, a stainless steel plate, a galvalume steel plate (registered trademark), an SGL (registered trademark) steel plate, or the like.

[0019] Each roofing material 2 has substantially the same shape and size. Each roofing material 2 is a member formed such that the dimension in the flow direction is longer than the dimension in the lateral direction and has a longitudinal direction. Hereinafter, the direction along the flow direction of the roofing material 2 is referred to as the "longitudinal direction".

[0020] Each roofing material 2 has, for example, a longitudinal dimension of 2 m or more and 4 m or less, and on one roof surface, a plurality of them are constructed side by side in the longitudinal direction. Note that the longitudinal dimension of each roofing material 2 is not limited.

[0021] In two adjacent roofing materials 2 in the flow direction, the lower-end portion of the roofing material 2 located on the upper side of the water overlaps the upper-end portion of the roofing material 2 located on the lower side of the water. In two adjacent roofing materials 2 in the lateral direction, the end portion of one roofing material 2 on the side of the other roofing material 2 overlaps the end portion of the other roofing material 2 on the side of the one roofing material 2.

[0022] As shown in Figures 3 and 5, each roofing material 2 has a downstream stepped portion 26 formed at the downstream end and an upstream stepped portion 27 formed at the upstream end. The roofing material 2 has a main body 20, a vertical section 22, a stepped section 23, a vertical section 24, and a stepped section 25. The main body 20, vertical section 22, stepped section 23, vertical section 24, and stepped section 25 are formed integrally.

[0023] The main body 20 constitutes the portion of the roofing material 2 between the downstream end and the upstream end. The lateral ends of the main body 20 are the lateral ends of the roofing material 2. The upright portion 22 extends from the downstream end of the main body 20 toward the back side. In this disclosure, "back side" means the side of the roofing substrate 10, and includes not only directions perpendicular to the back side but also directions not perpendicular to the back side.

[0024] The upright section 22 is formed along the entire length of the downstream end of the main body 20. The stepped section 23 extends downstream from the lower end of the upright section 22. The stepped section 23 is formed along the entire length of the lower end of the upright section 22. The stepped section 23 constitutes the downstream end of the roofing material 2.

[0025] The rising portion 24 extends from the upstream end of the main body 20 toward the surface side. In this disclosure, "surface side" means the side opposite to the roof base 10, and includes not only directions perpendicular to the surface but also directions not perpendicular to the surface.

[0026] The rising section 24 is formed along the entire length of the upstream end of the main body 20. The stepped section 25 extends upstream from the upper end of the rising section 24. The stepped section 25 is formed along the entire length of the upper end of the rising section 24. The stepped section 25 constitutes the upstream end of the roofing material 2.

[0027] The downstream step section 26 is composed of the downstream end of the main body 20, the upright section 22, and the stepped section 23. The upstream step section 27 is composed of the upstream end of the main body 20, the upright section 24, and the stepped section 25. The downstream end of the stepped section 23 is the downstream end of the roofing material 2. The upstream end of the stepped section 25 is the upstream end of the roofing material 2.

[0028] The main body 20, the lower step 23, and the upper step 25 each have a cross-sectional shape perpendicular to the longitudinal direction that is substantially the same along the entire length in the longitudinal direction.

[0029] Each roofing material 2 is placed on the roofing base 10 such that, for example, the downhill corner formed by the upright section 22 and the stepped section 23, and the uphill corner formed by the upright section 24 and the stepped section 25, are in contact with the downhill roofing material 2 and the roofing base 10, or in contact with the roofing base 10.

[0030] When another roofing material 2 is installed on the downstream side of roofing material 2, the downstream ends of the stepped section 23 and the main body 20 overlap the main body 20 and stepped section 25 of the other roofing material 2, respectively. In addition, the upright section 22 is located downstream of the upright section 24 of the other roofing material 2 and faces the upright section 24 of the other roofing material 2.

[0031] The rising section 24 restricts the rising section 22 of other roofing materials 2 adjacent to the upstream side from moving upstream. Workers installing the roofing materials 2 can align the roofing materials 2 by positioning the rising section 22 on the downstream side of the rising section 24 of the roofing material 2 installed downstream. Furthermore, the rising section 24 dams up rainwater that flows upstream along the surface of the main body 20. Therefore... This improves the waterproofing of buildings.

[0032] Each roofing material 2 is provided with an intermediate section 28 that constitutes the lateral middle portion. The intermediate section 28 includes a main intermediate section 200 that constitutes the lateral middle portion of the main body 20, a lower intermediate section 230 that constitutes the lateral middle portion of the lower section 23, and an upper intermediate section 250 that constitutes the lateral middle portion of the upper section 25.

[0033] The main body intermediate section 200, the lower step intermediate section 230, and the upper step intermediate section 250 each have the same cross-sectional shape and size perpendicular to the longitudinal direction. Therefore, the main body intermediate section 200 will be described in detail below, and for the lower step intermediate section 230 and the upper step intermediate section 250, elements common to the main body intermediate section 200 will be given the same reference numerals, and redundant explanations will be omitted.

[0034] The main body's intermediate section 200 has a pair of horizontally spaced flat sections 201 and 202, and a protruding section 203 located between the pair of flat sections 201 and 202. Each of the pair of flat sections 201 and 202 is formed in a flat shape along the upper surface of the roof base 10.

[0035] The protruding portion 203 of the main body's intermediate section 200 is formed along the entire length of the intermediate section 200 in the longitudinal direction. The protruding portion 203 protrudes more toward the surface than the other parts of the main body's intermediate section 200 (a pair of flat plate sections 201, 202). The cross-sectional shape of the protruding portion 203 perpendicular to the longitudinal direction is a curved V-shape that protrudes toward the surface. The pair of flat plate sections 201, 202 of the main body's intermediate section 200 extend laterally outward from the lower end of the protruding portion 203.

[0036] The protruding portions 203 of the lower section 23 and the upper section 25 are formed in the same position as the protruding portion 203 of the middle section 200 of the main body in the lateral direction. The protruding portion 203 of the lower section 23 is located downstream of the protruding portion 203 of the middle section 200 of the main body, and the protruding portion 203 of the upper section 25 is located upstream of the protruding portion 203 of the middle section 200 of the main body.

[0037] The intermediate section 28 of the roofing material 2 has an intermediate overlapping section 280, which is composed of the protruding portion 203 of the main intermediate section 200, the protruding portion 203 of the lower section 23, and the protruding portion 203 of the upper section 25. The intermediate overlapping section 280 extends along the entire length of the roofing material 2 in the longitudinal direction.

[0038] As shown in Figure 3, each roofing material 2 is provided with a pair of overlapping sections 3 and 4 formed at both ends in the lateral direction.

[0039] Hereinafter, of the pair of overlapping sections 3 and 4, the overlapping section 3 formed at one gable end 21 (one end in the lateral direction) of the roofing material 2 will be referred to as the one overlapping section 3, and the overlapping section 4 formed at the other gable end 21 (the other end in the lateral direction (the end opposite to the one overlapping section 3)) of the roofing material 2 will be referred to as the other overlapping section 4. Furthermore, in this disclosure, as shown in Figures 3 and 4, the direction parallel to the lateral direction and moving from the other overlapping section 4 toward the one overlapping section 3 will be referred to as the one, and the direction parallel to the lateral direction and moving from the one overlapping section 3 toward the other overlapping section 4 will be referred to as the other.

[0040] The pair of overlapping sections 3 and 4 (one overlapping section 3 and the other overlapping section 4) have a pair of main body overlapping sections 204, a pair of downstream overlapping sections 231, and a pair of upstream overlapping sections 251. Each of the pair of main body overlapping sections 204 is formed at both lateral ends of the main body 20 and protrudes toward the surface. Each of the pair of main body overlapping sections 204 is formed along the entire length of the main body 20 in the longitudinal direction.

[0041] A pair of downstream overlapping sections 231 are formed at the lateral ends of the stepped section 23, respectively, and protrude toward the surface. Each of the pair of downstream overlapping sections 231 is formed along the entire length of the stepped section 23 in the longitudinal direction.

[0042] A pair of water-side overlapping sections 251 are formed at the lateral ends of the stepped upper section 25, respectively, and protrude toward the surface. Each of the pair of water-side overlapping sections 251 is formed along the entire length of the stepped upper section 25 in the longitudinal direction.

[0043] Hereinafter, the overlapping portion 204 formed at one end of the main body 20 will be referred to as the one-side overlapping portion 205, and the overlapping portion 204 formed at the other end of the main body 20 will be referred to as the other-side overlapping portion 206. Furthermore, the downstream overlapping portion 231 formed at one end of the lower step portion 23 will be referred to as the one-side downstream overlapping portion 231A, and the downstream overlapping portion 231 formed at the other end of the lower step portion 23 will be referred to as the other-side downstream overlapping portion 231B. Furthermore, the upstream overlapping portion 251 formed at one end of the upper step portion 25 will be referred to as the one-side upstream overlapping portion 251A, and the upstream overlapping portion 251 formed at the other end of the upper step portion 25 will be referred to as the other-side upstream overlapping portion 251B.

[0044] On the one hand, the downstream overlapping section 231A is located downstream of the main overlapping section 205, and on the one hand, the upstream overlapping section 251A is located upstream of the main overlapping section 205. The main overlapping section 205, the downstream overlapping section 231A, and the upstream overlapping section 251A have the same cross-sectional shape and size perpendicular to the longitudinal direction. The main overlapping section 205, the downstream overlapping section 231A, and the upstream overlapping section 251A each have a cross-sectional shape perpendicular to the longitudinal direction of the roofing material 2 that is curved to protrude toward the surface.

[0045] Furthermore, the other downstream overlapping section 231B is located downstream of the other main overlapping section 206, and the other upstream overlapping section 251B is located upstream of the other main overlapping section 206. The other main overlapping section 206, the other downstream overlapping section 231B, and the other upstream overlapping section 251B have the same cross-sectional shape and size perpendicular to the longitudinal direction. The other main overlapping section 206, the other downstream overlapping section 231B, and the other upstream overlapping section 251B each have a cross-sectional shape perpendicular to the longitudinal direction of the roofing material 2 that is curved to protrude toward the surface.

[0046] When another roofing material 2 is installed on the downstream side of roofing material 2, the downstream ends of the protruding portion 203 of the stepped lower section 23 and the protruding portion 203 of the main body intermediate section 200, as shown in Figures 3 and 4, overlap with the upstream end of the protruding portion 203 of the main body intermediate section 200 and the protruding portion 203 of the stepped upper section 25 of the other roofing material 2, respectively. In addition, the downstream end of the one downstream overlapping section 231A and the one main body overlapping section 205 overlap with the upstream end of the one main body overlapping section 205 and the one upstream overlapping section 251A of the other roofing material 2, respectively. As a result, the lateral movement of roofing material 2 relative to other roofing materials 2 is restricted.

[0047] If another roofing material 2 is installed on the other side of roofing material 2, the other overlapping portion 4 fits over the one overlapping portion 3 of the other roofing material 2, covering and concealing the surface of the one overlapping portion 3 of the other roofing material 2. In this case, the other overlapping portion 4, with the other main overlapping portion 206, the other downstream overlapping portion 231B, and the other upstream overlapping portion 251B (see Figure 3), overlaps the one main overlapping portion 205, the one downstream overlapping portion 231A, and the one upstream overlapping portion 251A of the other roofing material 2, respectively.

[0048] One overlapping portion 3 and the other overlapping portion 4 are fixing portions that are fixed to the roof base 10. Laterally adjacent roofing materials 2 are fixed to the roof base 10 by fasteners 13 that penetrate vertically through the one overlapping portion 3 and the other overlapping portion 4 of the roofing material 2 that overlaps this one overlapping portion 3 (see Figure 1). The fasteners 13 are, for example, nails or screws.

[0049] As shown in Figure 3, the vertical portion 24 of each roofing material 2 has a plurality of protrusions 240. The vertical portion 24 has a pair of protrusions 240 that are spaced apart in the lateral direction. The pair of protrusions 240 are formed in the portion of the vertical portion 24 located between one overlap 3 and the intermediate overlap 280, and in the portion of the vertical portion 24 located between the other overlap 4 and the intermediate overlap 280. Each protrusion 240 is formed along the entire vertical length of the vertical portion 24. The lower end of each protrusion 240 is connected to the corresponding flat portion 201, 202 of the main body 20.

[0050] Each projection 240 is curved to protrude toward the downstream side and is formed, for example, by bending a part of the metal plate that makes up the rising section 24. Each projection 240 has a tip wall 241 and a pair of side wall sections 242, 243. The tip wall 241 constitutes the tip (downstream end) of the projection 240. The tip wall 241 is formed in a flat plate shape that is substantially perpendicular to the longitudinal direction and parallel to the parts of the rising section 24 other than the pair of projections 240. The tip wall 241 extends toward the surface side from the corresponding flat plate sections 201, 202 of the main body 20.

[0051] The pair of side wall sections 242 and 243 extend toward the water surface from both lateral ends of the tip wall section 241. Each side wall section 242 and 243 is formed in a flat plate shape inclined with respect to the longitudinal direction, such that the portion closer to the water surface is located further outward from the projection 240 in the lateral direction. The water surface ends of each side wall section 242 and 243 are connected to the portion of the rising section 24 other than the pair of projection sections 240.

[0052] When another roofing material 2 is installed on the upstream side of roofing material 2, the tip wall portion 241 of each projection 240 is in contact with or near the upstream surface of the rising portion 22 of the other roofing material 2. In this case, the distance from the tip wall portion 241 of each projection 240 to the rising portion 22 of the other roofing material 2 is shorter than the distance from the other portion 244, which is the part of the rising portion 24 other than the pair of projections 240, to the rising portion 22 of the other roofing material 2. As a result, a gap 14 (see Figure 4) is formed between the other portion 244 and the rising portion 22 of the other roofing material 2 adjacent to the upstream side. That is, when two adjacent roofing materials 2 in the flow direction are designated as the downstream roofing material 2A and the upstream roofing material 2, a gap 14 is formed between the other portion 244 of the rising portion 24 of the downstream roofing material 2A and the rising portion 22 of the upstream roofing material 2B. In this embodiment, gaps 14 are formed on both sides of each protrusion 240 in the lateral direction. These gaps 14 prevent rainwater that has reached the area between the rising portion 24 and the rising portion 22 of another roofing material 2 adjacent to it on the upstream side from rising due to capillary action. As a result, rainwater on the downstream side of the rising portion 24 is prevented from rising onto the stepped portion 25, thereby improving the waterproofing of the building. The roofing material 2 can be installed with position adjustments up to approximately minus 200 mm of its longitudinal length.

[0053] The shape of each protrusion 240 is not limited. For example, the side walls 242 and 243 of each protrusion 240 may be formed in a flat plate shape parallel to the longitudinal direction. Alternatively, each protrusion 240 may be formed in a curved arc shape that protrudes toward the downstream side. Furthermore, each protrusion 240 may be formed only on a part of the rising section 24 in the vertical direction. For example, the protrusion 240 may be formed only on the lower end of the rising section 24, only on the upper end, or only in the middle of the vertical direction.

[0054] Furthermore, the number of protrusions 240 on the rising portion 24 is not limited; the rising portion 24 may have only one protrusion 240, or it may have three or more.

[0055] The roof structure 100 is equipped with two types of roofing material 2: a first roofing material 2a and a second roofing material 2b. In Figure 3, the roofing material 2 located on the downstream side is the first roofing material 2a, and in Figure 2, the roofing material 2 located on the upstream side is the second roofing material 2b.

[0056] The first roofing material 2a is the roofing material 2 located furthest downstream among multiple roofing materials 2, and constitutes the eaves end of the roof surface. The second roofing material 2b is a roofing material 2 on which other roofing materials 2 are installed downstream, and constitutes the portion of the roof surface other than the eaves end. That is, the second roofing material 2b is installed on the upstream side of the first roofing material 2a or on the upstream side of other second roofing materials 2b.

[0057] Multiple roofing materials 2 arranged in the direction of flow are installed sequentially, starting with the roofing material 2 located downstream. That is, for adjacent roofing materials 2 in the direction of flow, the downstream roofing material 2 is installed first, followed by the upstream roofing material 2. Multiple roofing materials 2 arranged horizontally are installed sequentially, starting with the roofing material 2 located on the other side (opposite the overlapping section 3). That is, for adjacent roofing materials 2 in the horizontal direction, the other roofing material 2 is installed first, followed by the first roofing material 2.

[0058] Next, an example of a method for installing multiple roofing materials 2 will be described. In the following description, as shown in Figure 4, only one second roofing material 2b is installed on the upstream side of the first roofing material 2a. However, two or more second roofing materials 2b may be installed on the upstream side of the first roofing material 2a, aligned in the direction of flow. In the following description, as shown in Figure 1, multiple first roofing materials 2a installed in a horizontal arrangement will be numbered sequentially from the first roofing material 2a furthest to the other, and referred to as the first downstream roofing material 2a1, the second downstream roofing material 2a2, the third downstream roofing material, and so on. Similarly, multiple second roofing materials 2b installed in a horizontal arrangement on the roof surface will be numbered sequentially from the second roofing material 2b furthest to the other, and referred to as the first upstream roofing material 2b1, the second upstream roofing material 2b2, the third upstream roofing material, and so on.

[0059] First, the worker places the first downstream roofing material 2a1 onto the roof base 10. Next, as shown in Figure 4, the worker fits the other overlapping portion 4 of the second downstream roofing material 2a2 onto the one overlapping portion 3 of the first downstream roofing material 2a1, and places the second downstream roofing material 2a2 onto the roof base 10. After this, the worker fixes the one overlapping portion 3 of the first downstream roofing material 2a1 and the other overlapping portion 4 of the second downstream roofing material 2a2, which is fitted onto this one overlapping portion 3, to the roof base 10 with fasteners 13. Subsequently, the worker installs the third downstream roofing material, the fourth downstream roofing material, and so on in the same manner as the second downstream roofing material 2a2, thereby completing the installation of multiple downstream roofing materials 2a.

[0060] Next, the worker places the first upstream roofing material 2b1 on the roof base 10 so that the downstream end of the first upstream roofing material 2b1 overlaps with the upstream end of the first downstream roofing material 2a1. At this time, the worker overlaps the downstream ends of the protruding portion 203 of the lower step 23 and the protruding portion 203 of the middle part 200 of the first upstream roofing material 2b1 with the upstream end of the protruding portion 203 of the middle part 200 of the first downstream roofing material 2a1 and the protruding portion 203 of the upper step 25, respectively. In addition, the worker overlaps the downstream end of one downstream overlapping portion 231A and one main overlapping portion 205 of the first upstream roofing material 2b1 with the upstream end of one main overlapping portion 205 and one upstream overlapping portion 251A of the first downstream roofing material 2a1, respectively.

[0061] Next, the worker places the second upstream roofing material 2b2, shown in Figure 4, onto the roof base 10 so that its downstream end overlaps the upstream end of the second downstream roofing material 2a2. At this time, the worker overlaps the downstream ends of the protruding portion 203 of the lower step 23 and the protruding portion 203 of the main body middle section 200 of the second upstream roofing material 2b2 with the upstream end of the protruding portion 203 of the main body middle section 200 and the protruding portion 203 of the upper step 25 of the second downstream roofing material 2a2, respectively. In addition, the downstream ends of one downstream overlapping portion 231A and one main body overlapping portion 205 of the second upstream roofing material 2b2 overlap with the upstream end of one main body overlapping portion 205 and one upstream overlapping portion 251A of the second downstream roofing material 2a2, respectively. Furthermore, the other overlapping portion 4 of the second upstream roofing material 2b2 is placed over the one overlapping portion 3 of the first upstream roofing material 2b1.

[0062] Next, the worker secures the overlapping portion 3 of the first upstream roofing material 2b1 and the other overlapping portion 4 of the second upstream roofing material 2b2, which is fitted into this overlapping portion 3, to the roof base 10 using fasteners 13. In this case, the overlapping portion 3 of the first upstream roofing material 2b1 and the other overlapping portion 4 of the second upstream roofing material 2b2 are secured to the roof base 10 at multiple points in the direction of flow by fasteners 13.

[0063] Subsequently, the worker installs the third upstream roofing material, the fourth upstream roofing material, and so on, in the same manner as the second upstream roofing material 2b2, thereby completing the installation of multiple roofing materials 2b.

[0064] The order in which the roofing material 2 of this embodiment is installed is not limited. That is, in the installation of the roofing material 2 described above, the roofing material 2 was installed in the order of the first downstream roofing material 2a1, the second downstream roofing material 2a2, the third downstream roofing material, the first upstream roofing material 2b1, the second upstream roofing material 2b2, the third upstream roofing material, etc., but for example, it may also be installed in the order of the first downstream roofing material 2a1, the first upstream roofing material 2b1, the second downstream roofing material 2a2, the second upstream roofing material 2b2, the third downstream roofing material, the third upstream roofing material, etc.

[0065] <Keraba wrapping> Figure 6A shows the gable flashing 6. The gable flashing 6 covers the upper part of the gable portion 101 of the roof underlayment 10 and the upper part of the gable end 21 of the roofing material 2 arranged along the gable portion 101. The gable flashing 6 comprises a covering piece 61 and a fixing piece 62.

[0066] The covering piece 61 is the part that covers the upper part of the gable portion 101 of the roof base 10 and the upper part of the gable end 21 of the roofing material 2 which is arranged along the gable portion 101. The covering piece 61 is formed in a substantially flat shape. The gable wrap 6 also has an inclined piece 63. The inclined piece 63 is formed in a flat shape and is provided to protrude diagonally downward from the tip of the covering piece 61.

[0067] The fixing piece 62 is the part that is fixed to the gable portion 101. The fixing piece 62 is provided at the end of the covering piece 61 opposite to the inclined piece 63. The fixing piece 62 is formed in a flat plate shape and is formed to protrude downward at approximately a right angle to the covering piece 61.

[0068] The gable flashing 6 has a fixed cross-sectional shape and extends over the entire length of the gable portion 101 in the longitudinal direction (flow direction). The gable flashing 6 can be formed by bending a metal sheet similar to the roofing material 2.

[0069] <Disposal drainage component> Figure 6B shows the sacrificial flashing member 5. The sacrificial flashing member 5 is used to attach the gable flashing 6 to the roof base 10. The sacrificial flashing member 5 is also positioned between the gable portion 101 of the roof base 10 and the gable end 21 of the roofing material 2, and blocks rainwater and other water that has seeped between the gable portion 101 and the gable end 21 from flowing to the underside (back side) of the roof base 10.

[0070] The flashing member 5 has a fixing part 51 and a support part 52. The fixing part 51 is the part that is fixed to the battens 16 provided on the roof base 10. The fixing part 51 is formed in the shape of a flat plate. The support part 52 is the part to which the covering piece 61 of the gable flashing 6 is fixed. The support part 52 is formed in the shape of a flat plate and is formed to protrude laterally from the upper end of the fixing part 51 at approximately a right angle to the fixing part 51.

[0071] The drainage flashing member 5 has an installation portion 53. The installation portion 53 is the part that is installed on the roof substrate 10. The installation portion 53 is formed in a flat plate shape and is formed to protrude laterally from the lower end of the fixing portion 51 at approximately a right angle to the fixing portion 51. The support portion 52 and the installation portion 53 protrude in the same direction. The drainage flashing member 5 also has a water-stopping piece 54. The water-stopping piece 54 prevents water from seeping into the roof substrate 10. The water-stopping piece 54 is formed in a flat plate shape and is formed to protrude upward from the tip of the installation portion 53 at approximately a right angle to the installation portion 53. The angle of the water-stopping piece 54 with respect to the installation portion 53 does not need to be a right angle.

[0072] The flashing member 5 has a fixed cross-sectional shape and extends along the entire length of the gable portion 101 in the longitudinal direction (flow direction). The flashing member 5 can be formed by bending a metal plate similar to the roofing material 2.

[0073] <Waterproofing material> The waterproofing material 7 is a component placed between the gable end 21 of the roofing material 2 and the covering piece 61, thereby sealing the gap between the gable end 21 and the covering piece 61 and improving watertightness. The waterproofing material 7 is elastic and flexible, and is made of a synthetic resin such as polyethylene. The waterproofing material 7 is formed in a rectangular cross-section, has a constant cross-sectional shape, and has a length that extends over the entire length of the gable portion 101 in the longitudinal direction (flow direction).

[0074] <Gable structure> Figures 1 and 2 show the gable structure 1 of this embodiment. The gable structure 1 is formed by providing a flashing member 5 and a gable wrap 6 on the roof base 10 on which the roofing material 2 is installed.

[0075] The flashing member 5 is positioned along the gable end 21 of the roofing material 2 and fixed to the battens 16 installed in the roof underlayment 10. The gable end 21 is the left or right end of the roofing material 2 installed on the gable of the roof. The gable end 21 is positioned along the direction in which the gable of the roof extends when multiple roofing materials 2 are installed on the roof underlayment 10. Here, the direction in which the gable of the roof extends is the same as the longitudinal direction of the roofing material 2.

[0076] The gable end 21 includes one overlapping portion 3 or the other overlapping portion 4, the lower edges 31 and 41 of the one overlapping portion 3 or the other overlapping portion 4, and a portion of the main body 20 formed along the one overlapping portion 3 or the other overlapping portion 4. Figures 1A, B and 2A, B show the case where the gable end 21 is one overlapping portion 3, but the same applies to the other overlapping portion 4.

[0077] The gable end 21 has a plurality of stepped portions 210 arranged in the direction in which the gable extends. The plurality of stepped portions 210 are formed on one overlapping portion 3 or the other overlapping portion 4.

[0078] In other words, the upper surface of the downstream overlapping section 231A and the upper surface of the main body overlapping section 205 are at different heights from the upper surface of the roof base 10, resulting in a step difference between the downstream overlapping section 231A and the main body overlapping section 205. Also, the upper surface of the upstream overlapping section 251A and the main body overlapping section 205 are at different heights from the upper surface of the roof base 10, resulting in a step difference between the upstream overlapping section 251A and the main body overlapping section 205.

[0079] In this manner, a stepped portion 210 is formed between the one-sided overlapping portion 231A and the one-sided main overlapping portion 205 of the roofing material 2, and another stepped portion 210 is formed between the upper surface of the one-sided overlapping portion 251A and the one-sided main overlapping portion 205. Furthermore, these multiple stepped portions 210 are formed in a line along the direction in which the one-sided overlapping portion 3 extends (longitudinal direction).

[0080] Furthermore, the upper surface of the other downstream overlapping section 231B and the upper surface of the other main body overlapping section 206 are at different heights from the upper surface of the roof base 10, resulting in a step difference between the other downstream overlapping section 231B and the other main body overlapping section 206. Also, the upper surface of the other upstream overlapping section 251B and the other main body overlapping section 206 are at different heights from the upper surface of the roof base 10, resulting in a step difference between the upper surface of the other upstream overlapping section 251B and the other main body overlapping section 206.

[0081] In this manner, a stepped portion 210 is formed between the other downstream overlapping portion 231B and the other main body overlapping portion 206 of the other overlapping portion 4 of the roofing material 2, and another stepped portion 210 is formed between the upper surface of the other upstream overlapping portion 251B and the other main body overlapping portion 206. Furthermore, these multiple stepped portions 210 are formed in a line along the direction in which the other overlapping portion 4 extends (longitudinal direction).

[0082] The flashing member 5 is positioned along the entire length of the gable end 21 of the roofing material 2. At this time, the installation portion 53 is placed on the roof decking 11. The installation portion 53 is also positioned between the battens 16 and the fasteners 13 of the roofing material 2. The lower edge 31 of the overlapping portion 3, which is the gable end 21, is positioned on the installation portion 53. The water-stopping piece 54 is located below the overlapping portion 3. The flashing member 5 is provided along the entire length of the gable of the roof by fixing the fixing portion 51 to the battens 16 of the roof base 10 with fasteners 55 such as screws. The gable portion 101 is the part that includes the left and right ends of the roof decking 11, the battens 16 and the rafters 15.

[0083] The gable flashing 6 is fixed to the flashing member 5. The covering piece 61 of the gable flashing 6 is placed on the support part 52 of the flashing member 5 and fixed to the support part 52 with fasteners 64 such as screws. The covering piece 61 is located above the gable end 21 of the roofing material 2, above the flashing member 5, and above the gable portion 101. The inclined piece 63 is located above the part of the main body 20 that runs along the gable end 21. The fixing piece 62 of the gable flashing 6 is positioned to cover the outer surfaces of the roof sheathing 11 and rafters 15 and is fixed to the rafters 15 with fasteners 65 such as screws. The gable flashing 6, with its covering piece 61 and inclined piece 63, covers the gable end 21, the flashing member 5, and the gable portion 101 from above and is provided along the entire length of the roof gable.

[0084] The waterproofing material 7 is positioned between the gable end 21 and the covering piece 61. The waterproofing material 7 is compressed by being pressed from above by the covering piece 61 and elastically adheres to the upper surface of the overlapping portion 3 of the gable end 21 and the lower surface of the covering piece 61. The waterproofing material 7 is also provided along the entire length of the gable end 21 and the covering piece 61 in the direction in which the gable extends. Here, the overlapping portion 3 of the gable end 21 is provided with a plurality of stepped portions 210, and the waterproofing material 7 adheres to the upper surface of the overlapping portion 3 while deforming to follow the plurality of stepped portions 210.

[0085] By placing the waterproofing material 7 between the gable end 21 and the covering piece 61 in this manner, the gap between the gable end 21 and the covering piece 61 can be sealed with the waterproofing material 7, thereby improving watertightness.

[0086] Figures 8A and 8B show comparative examples to this embodiment. In these comparative examples, the covering piece 61 of the gable wrap 6 is fixed to the one-sided overlap 3 of the gable end 21 of the roofing material 2. At this time, the fasteners 64, such as screws, that fix the covering piece 61 are driven into the one-sided overlap 3, penetrating the covering piece 61 and the waterproofing material 7. Fixing the covering piece in this way may create holes in the roofing material 2, potentially reducing the watertightness. Furthermore, since multiple stepped sections 210 are formed in the one-sided overlap 3, the degree of compression of the waterproofing material 7 by the covering piece 61 differs. For example, in Figure 8B, the height of the one-sided overlap 3 is lower than in Figure 8A, so the degree of compression of the waterproofing material 7 is smaller. Therefore, if the fasteners 64 are driven into the waterproofing material 7 with such a small degree of compression, the waterproofing material 7 may be caught in the fasteners 64 and deformed, potentially creating gaps between the one-sided overlap 3 or the covering piece 61 and the waterproofing material 7, potentially reducing the watertightness.

[0087] On the other hand, in this embodiment, since the covering piece 61 is fixed to the drainage member 5, which is a separate component from the roofing material 2, no holes are formed in the roofing material 2 for fixing the covering piece 61, and the adhesion between the waterproofing material 7 and the overlapping portion 3 and the covering piece 61 is not impaired, resulting in excellent waterproofing performance.

[0088] In the above explanation, we described the case of a gable end 21 having one overlapping portion 3, but the same applies to a gable end 21 having another overlapping portion 4. In this case, the explanation is the same as above, by replacing one overlapping portion 3 with the other overlapping portion 4.

[0089] (summary) The gable structure (1) according to the first embodiment comprises a roof base (10), roofing material (2), a flashing member (5), a gable wrap (6), and a waterproofing material (7). The roofing material (2) is arranged on the roof base (10). The flashing member (5) is arranged along the gable end (21) of the roofing material (2) and is provided on the roof base (10). The gable wrap (6) is fixed to the flashing member (5). The gable end (21) is arranged along the direction in which the gable of the roof extends and has a plurality of stepped portions (210) aligned in the direction in which the gable extends. The flashing member (5) has a support portion (52) to which the covering piece (61) of the gable wrap (6) is fixed. The covering piece (61) is located above the gable end (21). The waterproofing material (7) is placed between the gable end (21) and the covering piece (61).

[0090] In this embodiment, the covering piece (61) is not fixed to the roofing material (2) but to the flashing member (5), so fasteners (64) such as screws for fixing the covering piece (61) are not driven into the roofing material (2), resulting in a gable structure (1) in which watertightness is not easily compromised. In addition, the watertight material (7) is placed between the gable end (21) and the covering piece (61) to seal the gap, so even if there are multiple steps (210) at the gable end (21), rainwater is less likely to penetrate from between the gable end (21) and the covering piece (61), resulting in a gable structure (1) with excellent watertightness.

[0091] The second embodiment is a gable structure (1) according to the first embodiment, wherein the flashing member (5) has an installation portion (53) positioned on the roof substrate (10) and a water-stopping piece (54) projecting upward from the installation portion (53). The gable end (21) is positioned on the installation portion (53).

[0092] According to this embodiment, even if rainwater seeps in from the gutter end (21), it will flow onto the installation part (53), thereby improving watertightness.

[0093] The third aspect is a gable structure (1) according to the second aspect, wherein the covering piece (61) is fixed to the support part (52) with screws above the installation part (53).

[0094] According to this embodiment, screw holes are formed in the covering piece (61) and the support part (52) above the installation part (53), so that even if rainwater seeps in through the screw holes, it will reach the installation part (53), resulting in excellent watertightness. [Explanation of symbols]

[0095] 1. Gable structure 2 Roofing materials 5. Disposal drainage member 6. Wrap 7. Waterproofing material 10. Roof underlayment 21 Gable end 41 Lower edge 52 Support part 53 Installation part 61 Coverings 210 Multilayered section

Claims

1. Roof underlayment and Roofing material placed on the aforementioned roof base, A flashing member is provided on the roof base and is positioned along the gable end of the roofing material, A gable wrapper fixed to the aforementioned drainage member, Equipped with a waterproofing material, The gable end is positioned along the direction in which the roof gable extends and has a plurality of stepped portions aligned in the direction in which the gable extends. The aforementioned drainage member has a support portion to which the covering piece of the gable wrap is fixed, The covering piece is located above the gable end, The aforementioned waterproofing material is positioned between the gable end and the covering piece. Gable flank structure.

2. The aforementioned drainage member has an installation portion positioned on the roof substrate and a water-stopping piece protruding upward from the installation portion, The gable end is positioned on the installation portion. The gable structure according to claim 1.

3. The gable structure according to claim 2, wherein the covering piece is fixed to the support portion by screws above the installation portion.

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