Rain flashing construction structure and rain flashing

Abstract

To provide a construction structure of a flashing member with preferable construction workability, and a flashing member.SOLUTION: In the construction structure of a flashing member 1 provided at a tie-in part P1 of a roof 2 and an outer wall 3, the flashing member 1 has a cover member 21 covering the surface side of a wall side end part 15 of the roof 2 along the wall side end part, and a cover engaging member 22 engaging and holding the cover member 21 at the wall side end part 15 of the roof 2. The cover engaging member 22 has a wall side folding part 27 extending from the surface side of a wall side end part 26 toward a wall opposite side. The wall side folding part 27 is fixed to the surface side of the roof 2 in an inserted state into a space S1 between the wall side end part 15 of the roof 2 and a lower end part 18 of the outer wall 3. The cover member 21 is fixed to the surface side of the roof 2 in a state in which a wall side insertion part 23 is inserted into the wall side folding part 27 from the wall opposite side and engaged and held.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a construction structure of a rain retainer provided at a joint portion between a roof and an outer wall, and a rain retainer.

Background Art

[0002] In buildings such as detached houses, a gap is provided at the joint portion between the roof and the outer wall to suppress the stagnation of hot air and moisture in the attic and to discharge the condensation inside the outer wall. Further, a rain retainer is provided in the gap to prevent rainwater from entering the inside of the outer wall through the gap (for example, Patent Documents 1 and 2).

[0003] Patent Documents 1 and 2 disclose a rain retainer having a substantially L-shaped cross section when viewed from the short side end face constructed in the gap of the joint portion. Specifically, the rain retainer (rain retainer member) of Patent Document 1 includes a ventilation portion provided on the surface of the wall side end of the roof material, a decorative surface portion (first rain retainer portion) extending from the upper surface of the ventilation portion substantially parallel to the roof material toward the outer wall material (siding) side, and a rising portion (second rain retainer portion) extending upward from the wall side end of the decorative surface portion. It is a plate material integrally formed, and is constructed along the gap of the joint portion with the rising portion disposed on the back surface of the outer wall material.

[0004] On the other hand, the rain retainer of Patent Document 2 is a plate material integrally formed with a decorative surface portion (ridge cover portion) having an inverted L-shaped cross section covering the surface of a ridge provided at the wall side end of the roof material, a rising portion (back plate portion) rising from the wall side end of the decorative surface portion, and a pressing piece portion (rain return plate portion) extending from the lower end portion of the decorative surface portion toward the anti-wall side. The rising portion is disposed on the back surface of the outer wall material (frame wall surface), and the pressing piece portion is disposed on the surface of the roof material, and is constructed along the gap of the joint portion. Thus, since the rain retainers of Patent Documents 1 and 2 are constructed with the rising portion sandwiched between the back surface sides of the outer wall materials, they are stably held and fixed to the joint portion without fluttering even in strong winds.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2014-202026 [Patent Document 2] Japanese Patent Publication No. 2001-254487 [Overview of the project] [Problems that the invention aims to solve]

[0006] Incidentally, in recent years, when renovating roofs of detached houses and other buildings, a method called the "cover method" has been widely adopted, in which the existing roofing material is not removed but the surface is covered with renovation roofing material to replace the roof. However, in such cases, it may also be necessary to renovate the flashing installed at the junction of the roof and the exterior wall.

[0007] However, in the flashing construction structure disclosed in Patent Documents 1 and 2, as described above, the rising portion is held in a state where it is sandwiched on the back side of the exterior wall. Therefore, in order to remove or install the flashing from the joint, it becomes necessary to remove the exterior wall material as well, which can make the repair work extensive. Alternatively, there is a method of repairing by covering the existing flashing with a new flashing without removing it from the joint. However, in the case of the flashing described above, the rising portion needs to be inserted deeply from the gap between the roof and the exterior wall to the back side of the exterior wall. Therefore, depending on the size of the gap and the structure on the back side of the exterior wall, it may not be possible to install it properly. Furthermore, if the flashing is installed on the outside of the gap (the surface side of the exterior wall), depending on the construction structure, it may obstruct the flow of air and condensation water.

[0008] This invention has been made in view of the above-mentioned problems, and aims to provide a construction structure and a flashing with good workability. [Means for solving the problem]

[0009] To solve the above problems, the construction structure and flashing of the present invention employ the following technical means.

[0010] The present invention relates to a construction structure for a flashing provided at the junction of a roof and an exterior wall, wherein the flashing comprises a cover member that covers its surface along the wall-side end of the roof, and a cover engaging member that engages and holds the cover member at the wall-side end of the roof, the cover engaging member having a wall-side folded portion that extends from the surface side of the wall-side end toward the opposite wall side, the wall-side folded portion being fixed to the surface side of the roof with the wall-side folded portion inserted into the gap between the wall-side end of the roof and the lower end of the exterior wall, and the cover member being fixed on top of the surface side of the roof with the wall-side insertion portion being inserted into the wall-side folded portion from the opposite wall side and engaged and held.

[0011] Preferably, the cover engaging member is fixed to the surface side of the roof by fasteners, and the cover member is overlapped and fixed to the surface side of the roof so as to cover the fixing points of the fasteners on the cover engaging member.

[0012] Preferably, the wall-side folded portion is formed by bending the wall-side end of the cover engaging member toward the surface at an acute angle, and the acute angle is in the range of 10 to 20 degrees.

[0013] Preferably, the cover member and the cover engaging member are fixed by overlapping them with the surface of an existing flashing that is provided along the wall-side end of the roof to cover its surface.

[0014] Furthermore, the rain flashing of the present invention is a rain flashing installed at the joint between the roof and the exterior wall, and comprises a cover member that covers the surface side along the wall-side end of the roof, and a cover engaging member that engages and holds the cover member at the wall-side end of the roof, wherein the cover engaging member is The wall-side end is bent into a sharp V-shape, The cover member has a wall-side folded portion that extends from the surface side of the wall-side end toward the opposite wall side, and a fixing surface portion that can be fixed to the surface side of the roof, and the wall-side folded portion The gap inside On the opposite side of the wall Open part It has a wall-side insertion part that is inserted and engaged and held in place, and a decorative surface part that can be overlapped and fixed to the surface of the roof. [Effects of the Invention]

[0015] According to the rain retainer construction structure and the rain retainer of the present invention, the cover member can be easily fixed to or removed from the surface side of the wall side end of the roof from the opposite wall side, so the workability is greatly improved.

Brief Description of the Drawings

[0016] [Figure 1] It is a schematic view of a building showing the construction position of the rain retainer of the embodiment. [Figure 2] It is a cross-sectional view of the gable side joint part showing the construction structure of the rain retainer of the embodiment. [Figure 3] It is a cross-sectional view of the purlin side joint part showing the construction structure of the rain retainer of the embodiment. [Figure 4] It is a short side end face view in a state where the cover member and the cover engaging member of the rain retainer of the embodiment are separated.

Modes for Carrying Out the Invention

[0017] Hereinafter, the rain retainer and its construction structure according to the present invention will be described based on the drawings. Note that the embodiments described below are an example of embodying the present invention, and the configuration of the present invention is not limited by the specific examples.

[0018] As shown in FIG. 1, the rain retainer 1 of the present embodiment is a plate material formed long in one direction, and is constructed at the joint part P1 between the roof 2 of a building A such as a detached house and its gable side outer wall 3, and at the joint part P2 between the roof 2 and its purlin side outer wall 3.

[0019] In the present embodiment, as appropriate, at the gable side joint part P1 of the roof 2, the gable side of the roof 2 is the wall side, and the eaves side of the roof 2 is the opposite wall side. Also, at the purlin side joint part P2 of the roof 2, the purlin side on the outer wall 3 side of the roof 2 is the wall side, and the purlin side on the side opposite to the outer wall 3 is the opposite wall side. Further, the roof 2 of the present embodiment is inclined at a predetermined gradient in the eaves-gable direction, and the rainwater flowing down on the roof 2 flows along its surface to the eaves side. That is, the eaves-gable direction of the roof 2 is the rainwater flow direction.

[0020] The roof 2 of this embodiment is a roof constructed by arranging a plurality of thin plate-shaped decorative slates 5 in the purlin direction on the surface of the base material 4 and stacking them in a stepped manner in the gable direction. Further, a repair roof material 6 is attached to the surface of the decorative slate 5 (see FIGS. 2 and 3). That is, the roof 2 of this embodiment is a roof obtained by repairing an existing roof material (decorative slate) 5 by a covering method. Note that the roof 2 further includes a joint cover, a gable end water drainage, a ridge water drainage, etc., but the description of these members is omitted because they are not directly related to the present invention.

[0021] Although not shown, the base material 4 is composed of a field board or an underlay material covering the surface of the field board. Also, as shown in FIGS. 2 and 3, the decorative slate 5 is fixed to the base material 4 by roof nails 7. The repair roof material 6 is adhesively fixed to the surface of the decorative slate 5.

[0022] As shown in FIGS. 2 and 3, existing rain retainers 10 constructed before the construction of the rain retainer 1 of this embodiment (during new construction or during the construction of the repair roof material 6) are provided at the gable side joint portion P1 and the purlin side joint portion P2, respectively.

[0023] The existing rain retainer 10 is a plate material having a substantially L-shaped cross-section in a short side end view, in which a rising portion 11, a decorative surface portion 12, and a pressing piece portion 13 are integrally formed by bending a rectangular metal thin plate long in one direction. The rising portion 11 is arranged on the back surface of the outer wall material 14, the decorative surface portion (hereinafter, appropriately referred to as "existing decorative surface portion") 12 is arranged to cover the surface of the drip edge 16 provided at the wall side end portion 15 of the roof 2, and the pressing piece portion (hereinafter, appropriately referred to as "existing pressing piece portion") 13 is arranged to cover the surface of the wall side end portion 17 of the repair roof material 6, and is fixed to the surface side (here, the surface of the drip edge 16) of the wall side end portion 15 of the roof 2. Note that the drip edge 16 is fixed to the surface of the wall side end portion 15 of the decorative slate 5. Also, a predetermined gap S1 is defined between the drip edge 16 and the lower end portion (the lower end portion of the outer wall 3) 18 of the outer wall material 14.

[0024] As shown in Figure 2, the decorative surface portion 12 of the existing flashing 10 provided at the ridge-side joint P1 is formed to extend diagonally downward from the lower end of the rising portion 11 in the same direction as the slope direction (eaves side) of the roof 2, in accordance with the angle of the roof 2 which extends diagonally downward from a position below the exterior wall 3. In other words, the existing flashing 10 at the ridge-side joint P1 is formed in a roughly L-shape when viewed from the short-side end face, which is bent at an obtuse angle.

[0025] On the other hand, as shown in Figure 3, the decorative surface portion 12 of the existing flashing 10 provided at the girder-side joint P2 is formed to extend approximately horizontally from the lower end of the rising portion 11, in accordance with the angle of the roof 2 which extends approximately horizontally from a position below the exterior wall 3. That is, the existing flashing 10 at the girder-side joint P2 is formed in an approximately L-shape when viewed from the short end face, which bends at approximately a right angle.

[0026] In this embodiment, a common existing flashing 10 is used at both the ridge-side joint P1 and the girder-side joint P2. Specifically, for example, at the girder-side joint P2, the same approximately obtuse-angled L-shaped existing flashing 10 (see Figure 2) used at the ridge-side joint P1 is installed after adjusting its shape so that the angle between the rising portion 11 and the decorative surface portion 12 is right angle. Alternatively, an existing flashing 10 (see Figure 3) that is approximately the same as the existing flashing 10 used at the girder side connection P2 may be installed at the ridge side connection P1, after adjusting its shape so that the angle between the rising portion 11 and the decorative surface portion 12 is obtuse.

[0027] As shown in Figures 2 and 3, the existing flashing 10 is fixed to the coping 16 with fixing nails (not shown). More specifically, the existing flashing 10 is formed in an L-shape when viewed from the short end face, such that its decorative surface portion 12 covers the surface of the coping 16 and the side facing away from the wall (hereinafter referred to as the "opposite wall side") 16S. The decorative surface portion 12 is folded over the opposite wall side 16S of the coping 16, and fixing nails are driven into the opposite wall side 16S of the coping 16 from the opposite wall side (the eaves side at the ridge side joint P1 in Figure 2, and the girder side opposite to the exterior wall 3 at the girder side joint P2 in Figure 3).

[0028] The existing flashing 10 may be fixed to the refurbishment roofing material 6 or decorative slate 5 at a location different from the coping 16. Furthermore, the existing flashing 10 may be fixed to the coping 16, refurbishment roofing material 6, decorative slate 5, etc., using only adhesive without fixing nails, or it may be fixed to the coping 16, refurbishment roofing material 6, decorative slate 5, etc., by other general methods.

[0029] The length of the decorative surface portion 12 from the edge on the opposite wall side to the edge on the wall side, that is, the total width W1 of the decorative surface portion 12 (see Figure 4), is formed to be larger than the width dimension of the coping 16 (the length in the eaves-ridge direction at the ridge-side connection portion P1 in Figure 2, and the length in the girder direction at the girder-side connection portion P2 in Figure 3). Therefore, almost the entire surface of the coping 16 is covered by the decorative surface portion 12.

[0030] The existing retaining piece 13 is formed into a flat surface without irregularities between its short-side end faces. In addition, the end of the existing retaining piece 13 on the opposite side of the wall is hemmed on its back side, which increases the bending rigidity of the existing retaining piece 13. Furthermore, this hemmed portion abuts against the surface of the roof 2 (in this case, the surface of the refurbished roofing material 6) along almost its entire length, preventing rainwater from seeping into the back side of the refurbished roofing material 6 and preventing wind from entering.

[0031] The flashing 1 of this embodiment (hereinafter referred to as the "new flashing") is installed on the joints P1 and P2 so as to cover the surface of the decorative surface 12 and the flashing piece 13 of the existing flashing 10 that has been installed as described above.

[0032] As shown in Figures 2 to 4, the newly installed flashing 1 comprises a cover member 21 and a cover engaging member 22. The cover engaging member 22 is positioned below the exterior wall material 14 on the surface of the existing decorative surface 12, and the cover member 21 is superimposed on the surface of the decorative surface 12 and the flashing piece 13 of the existing flashing 10. The flashing is then fixed to the surface side of the wall end 15 of the roof 2 (in this case, the surface of the existing flashing 10).

[0033] Furthermore, the construction structure and flashing of the flashing according to the present invention are not limited to the joints P1 and P2 where the existing flashing 10 is installed as described above. That is, the new flashing 1 may be installed in place of the existing flashing 10 during new construction. Specifically, the new flashing 1 is installed at the joints P1 and P2 with the cover engaging member 22 positioned near the surface wall of the coping 16 (below the exterior wall material 14), and the cover member 21 overlapping the surface of the coping 16, the opposite wall side 16S, and a portion of the surface of the decorative slate 5 exposed on the opposite wall side. In this case, the new flashing 1 can be installed before the exterior wall material 14 is installed, or it can be installed after the exterior wall material 14 is installed. Also, if the existing flashing 10 is configured to be easily removable from the joints P1 and P2, the new flashing 1 may be installed in place of the existing flashing 10 during renovation. Specifically, the new flashing 1 is installed in the same way as during new construction after the existing flashing 10 is removed from the joints P1 and P2. Similarly, in this case as well, the new flashing 1 can be installed before the exterior wall material 14 is installed, or the exterior wall material 1 It can also be done after step 4 has been completed.

[0034] The cover member 21 is a plate body with a roughly Z-shape when viewed from the short end face, formed integrally with a wall-side insertion portion 23, a decorative surface portion 24, and a retaining piece portion 25 by bending a rectangular metal plate that is long in one direction. The wall-side insertion portion 23 is inserted from the opposite wall side into a wall-side folded portion 27 provided on the wall-side end portion 26 of the cover engagement member 22 and engaged and held in place. The decorative surface portion (hereinafter referred to as the "new decorative surface portion") 24 is positioned to cover the surface of the existing decorative surface portion 12, and the retaining piece portion (hereinafter referred to as the "new retaining piece portion") 25 is positioned to cover the surface of the existing retaining piece portion 13. The cover member 21 is then placed on top of the existing rain flashing 10 and fixed in place.

[0035] The wall-side insertion portion 23 is formed in a flat shape without irregularities between its short-side end faces. Therefore, when the wall-side insertion portion 23 is inserted into the wall-side folded portion 27 of the cover engaging member 22, it is less likely to catch on the wall-side folded portion 27 or its surrounding area. Also, when inserted into the wall-side folded portion 27, the edge of the wall-side insertion portion 23 abuts against the inner surface of the wall-side folded portion 27 along its entire length. The wall-side insertion portion 23 may have hemmed edges.

[0036] The newly installed decorative surface portion 24 is formed in an L-shape when viewed from its short end face so as to cover the existing decorative surface portion 12, and its opposite wall-side bent portion 24S is positioned facing the opposite wall-side bent portion 12S of the existing decorative surface portion 12. Furthermore, the newly installed decorative surface portion 24 is formed in a flat surface without irregularities between its short end faces. The newly installed decorative surface portion 24 may also be formed in a corrugated or stepped surface shape with irregularities in the front-back direction to the extent that it does not obstruct the flow of rainwater on its surface.

[0037] The length from the edge of the newly installed decorative surface 24 on the opposite wall side to the edge of the wall-side insertion part 23, that is, the total width W3 of the newly installed decorative surface 24 (see Figure 4), is formed to be smaller than the total width W1 of the existing decorative surface 12. Specifically, for example, while the total width W1 of the existing decorative surface 12 is 100 mm, the total width W3 of the newly installed decorative surface 24 is formed to be 90 mm.

[0038] The newly installed retaining piece 25 is formed in a flat, smooth shape across its short-side end faces. Furthermore, the end of the newly installed retaining piece 25 on the opposite side of the wall is hemmed on its back side, thereby increasing the bending rigidity of the newly installed retaining piece 25. In addition, by making this hemmed portion abut against the surface of the roof 2 (in this case, the surface of the roofing material 6 for renovation) along its entire length, it is possible to effectively prevent rainwater from entering the back side of the cover member 21 and wind from flowing in.

[0039] In Figures 2 and 3, the existing flashing 10, the cover member 21 of the new flashing 1, and the cover engaging member 22 are shown with their overlapping parts spaced apart for ease of identification. However, the existing flashing 10, the cover member 21 of the new flashing 1, and the cover engaging member 22 are fixed together as closely as possible. In particular, the cover member 21 is installed so that the end (hemmed portion) on the opposite wall side of the new flashing piece 25 abuts against the surface of the roof 2, as described above. This installation structure prevents rainwater from entering the back side of the cover member 21 and prevents wind from entering. Furthermore, a sealing material such as sealant or waterproof tape may be applied between the end on the opposite wall side and the surface of the roof 2. This can more effectively prevent rainwater from entering the back side of the cover member 21 and prevent wind from entering.

[0040] The length of the newly installed retaining piece 25 from the edge on the wall side to the edge on the opposite wall side, i.e., the total width W4 of the newly installed retaining piece 25 (see Figure 4), is formed to be larger than the length of the existing retaining piece 13 from the edge on the wall side to the edge on the opposite wall side, i.e., the total width W2 of the existing retaining piece 13 (see Figure 4). Specifically, for example, while the total width W2 of the existing retaining piece 13 is 30 mm, the total width W4 of the newly installed retaining piece 25 is formed to be 35 mm. Therefore, almost the entire surface of the existing retaining piece 13 is covered by the newly installed retaining piece 25.

[0041] The cover engaging member 22 is a plate body with a roughly V-shape when viewed from the short end, formed integrally with a wall-side folded portion 27 and a fixing surface portion 28 by bending a rectangular metal plate that is long in one direction. The wall-side folded portion 27 of the wall-side end portion 26 is inserted into the gap S1 between the roof 2 and the exterior wall 3 (the gap between the coping 16 and the lower end portion 18 of the exterior wall material 14), and the fixing surface portion 28 is positioned along the surface of the existing decorative surface portion 12, and it is fixed by overlapping it with the existing flashing 10. At this time, the wall-side folded portion 27 is inserted into the gap S1 between the roof 2 and the exterior wall 3 while leaving a gap (gap S1) between it and the lower end portion 18 of the exterior wall material 14 that is sufficient for air and condensation water to flow through.

[0042] The wall-side folded portion 27 extends from the surface side of the wall-side end 26 of the cover engagement member 22 toward the opposite wall side, and the wall-side insertion portion 23 of the cover member 21 is inserted into the gap inside it from the open portion toward the opposite wall side. In this embodiment, the wall-side folded portion 27 is formed in a substantially V-shape that expands toward the opposite wall side by bending the wall-side end of the cover engagement member 22 toward the surface side at an acute angle. As a result, when the wall-side folded portion 27 is inserted into the gap S1 between the roof 2 and the outer wall 3, it is less likely to get caught on the lower end 18 or the surrounding part of the outer wall 3.

[0043] The wall-side folded portion 27 may be a flat or substantially V-shaped plate formed separately from the fixed surface portion 28, and may be connected to the surface of the wall-side end of the fixed surface portion 28 (the wall-side end 26 of the cover engagement member 22) by fixing screws, adhesive, welding, etc.

[0044] The bending angle of the wall-side folded portion 27, that is, the angle A between the wall-side folded portion 27 and the fixed surface portion 28, is set within the range of 10 to 20 degrees (for example, 10 degrees) (see Figure 4). Therefore, the wall-side insertion portion 23 of the cover member 21, which is inserted into the wall-side folded portion 27, abuts against the inclined surface on the inside of the wall-side folded portion 27 at a gentle angle. Furthermore, by being pushed inward (towards the opposite wall) along the inclined surface, the wall-side insertion portion 23 is engaged and held in place by being pressed against the fixed surface portion 28 side (towards the roof 2 side). In other words, the wall-side insertion portion 23 of the cover member 21 is inserted into the inside of the wall-side folded portion 27 from the opposite wall side and engages by friction.

[0045] The end of the wall-side folded portion 27 on the side opposite the wall is hemmed on its back side (the inside of the wall-side folded portion 27), thereby increasing the bending rigidity of the wall-side folded portion 27. Furthermore, this hemmed portion abuts against the surface of the wall-side insertion portion 23 of the cover member 21 over almost its entire length, allowing the cover member 21 to be more securely engaged and held.

[0046] Furthermore, the wall-side folded portion 27 may be formed by bending the wall-side end of the cover engaging member 22 toward its surface side by approximately 180 degrees, as long as it allows the wall-side insertion portion 23 of the cover member 21 to be smoothly inserted into its interior and can properly engage and hold the wall-side insertion portion 23. For example, the wall-side folded portion 27 may be formed by flattening the wall-side end of the cover engaging member 22 so that it is parallel to the fixed surface portion 28, with only a gap into which the wall-side insertion portion 23 can be inserted. Alternatively, the wall-side folded portion 27 may be formed by bending the wall-side end of the cover engaging member 22 toward its surface side by 180 degrees or more, thereby creating a roughly U-shape that contracts from the wall side toward the opposite wall side.

[0047] The fixed surface portion 28 is fixed to the coping 16 by fixing screws 29 which serve as fasteners. Specifically, the fixed surface portion 28 is formed in a flat shape with no irregularities between its short-side end faces, and is fixed to the coping 16 by overlapping it with the surface of the existing flashing 10 and screwing in the fixing screws 29 from the surface side.

[0048] The fixed surface portion 28 is fixed by fixing screws 29 at a position closer to the opposite side of the wall than the wall-side folded portion 27. It is fixed to the coping 16. Therefore, the wall-side insertion portion 23 of the cover member 21 is inserted into the wall-side folded portion 27, and is fixed to the surface side of the roof 2 (in this case, the surface of the existing flashing 10) by overlapping it so as to cover the fixing points of the fixing screws 29 on the fixing surface portion 28.

[0049] The fixing screws 29 are so-called self-tapping screws, which are screwed into the coping 16 while threading them into the fixing surface 28 and the existing flashing 10. Alternatively, the fixing screws 29 may be screwed into the coping 16 while threading them into the existing flashing 10 through fixing holes pre-provided in the fixing surface 28, or, if there is no existing flashing 10, they may be screwed directly into the coping 16 through the fixing holes. It is also preferable to apply a sealing material such as sealant or waterproof tape around the fixing screws 29. This construction structure effectively prevents rainwater from entering the back side of the cover engagement member 22 and also prevents the fixing screws 29 from loosening.

[0050] Furthermore, the fixing surface portion 28 may be fixed to the refurbished roofing material 6 or decorative slate 5, or to other locations different from the coping 16, as long as it can hold the wall-side folded portion 27 in the position inserted into the gap S1. Also, the fixing surface portion 28 may be fixed to the coping 16, refurbished roofing material 6, decorative slate 5, etc., with adhesive instead of fixing screws 29, or it may be fixed to the coping 16, refurbished roofing material 6, decorative slate 5, etc., with screws or staples. Alternatively, it may be fixed to the coping 16, refurbished roofing material 6, decorative slate 5, etc., by other general methods.

[0051] The cover member 21 and cover engaging member 22 are made from a material such as iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel sheet, enamel steel sheet, clad steel sheet, laminated steel sheet (such as PVC steel sheet), sandwich steel sheet (such as vibration-damping steel sheet), etc. (including metal color plates painted in various colors). More preferably, aluminum-zinc alloy plated steel sheet or steel sheet with magnesium added to an aluminum-zinc alloy plated steel sheet is used. Furthermore, the cover member 21 and cover engaging member 22 may be formed not only by bending, but also by roll forming, press forming, extrusion forming, notching, etc. In addition, the cover member 21 and cover engaging member 22 may be made from synthetic resin sheet material such as polyvinyl chloride resin or polycarbonate resin (including synthetic resin color plates painted in various colors).

[0052] Next, the construction procedure for the newly installed flashing 1 of this embodiment will be described. Note that the construction procedures for the joints P1 and P2 other than the newly installed flashing 1 are the same as those of the conventional method, so the explanation will be omitted.

[0053] First, the cover engagement member 22 is fixed to the surface of the existing decorative surface 12 at a position below the exterior wall material 14. Specifically, as described above, with the wall-side folded portion 27 inserted into the gap S1 between the roof 2 and the exterior wall 3, the fixing surface portion 28 is placed on top of the surface of the existing decorative surface 12, and the fixing surface portion 28 is screwed and fixed to the coping 16 from its surface side, sandwiching the existing decorative surface 12.

[0054] Furthermore, when fixing the cover engaging member 22 to the existing decorative surface 12, it is preferable to apply adhesive to the back surface of the cover engaging member 22 or its mounting portion (in this case, the surface of the existing decorative surface 12) beforehand. Doing so allows the cover engaging member 22 to be more firmly fixed to the mounting portion. In addition, the cover engaging member 22 is less likely to shift position during the screw fastening process, allowing the cover engaging member 22 to be fixed to the correct position more smoothly.

[0055] Furthermore, in the gap on the inside of the wall-side folded portion 27 of the cover engaging member 2, Before fixing part 2 to the existing decorative surface 12, the sealant may be filled in beforehand. In the method of fixing the cover engaging member 22 to the existing decorative surface 12 first, and then filling the gap inside the wall-side folded portion 27 through the gap S1 between the roof 2 and the exterior wall 3 with sealant, there is a risk that the sealant will protrude to areas other than the wall-side folded portion 27 and spoil the appearance. However, as described above, by filling the gap inside the wall-side folded portion 27 with sealant before fixing the cover engaging member 22 to the existing decorative surface 12, the appearance finish is less likely to be affected.

[0056] Furthermore, the fixing points of the fixing screws 29 on the surface of the cover engaging member 22 may be sealed with waterproof tape. Alternatively, a sealant may be applied around the fixing screws 29. However, if the intrusion of rainwater from around the fixing screws 29 to the back side of the cover engaging member 22 can be sufficiently prevented by adhesive applied to the back surface of the cover engaging member 22 or by a gasket pre-installed around the fixing screws 29, it is not necessarily required to seal around the fixing screws 29 with a sealing material such as a sealant or waterproof tape.

[0057] Next, the cover member 21 is placed on top of the decorative surface 12 and the retaining piece 13 of the existing flashing 10 and fixed in place. Specifically, as described above, the wall-side insertion part 23 is inserted into the wall-side folded-back part 27 of the cover engaging member 22 from the opposite wall side and engaged and held in place. Then, fixing nails 30 are driven into the opposite wall side folded-back part 24S of the decorative surface 24 from the opposite wall side (the eaves side in the ridge-side joint P1 in Figure 2, and the girder side opposite to the exterior wall 3 in the girder-side joint P2 in Figure 3) to fix the decorative surface 24 to the coping 16. As a result, the cover member 21 is fixed to the surface of the existing flashing 10, and the main construction work of the new flashing 1 is completed.

[0058] Furthermore, when fixing the cover member 21 to the surface of the existing flashing 10, adhesive may be applied in advance to the back surface of the cover member 21 or the mounting portion (in this case, the surface of the existing decorative surface 12 or the existing flashing piece 13). Also, when fixing the decorative surface (new decorative surface) 24 of the cover member 21 to the surface of the existing flashing 10 as described above, if the fixing nails (not shown) driven into the bent portion 12S on the opposite wall side of the existing flashing 10 interfere with the bent portion 24S on the opposite wall side of the cover member 21, preventing proper attachment, the fixing nails may be further driven into the coping 16 and embedded before fixing the cover member 21 to the existing flashing 10. Alternatively, the fixing nails may be removed from the coping 16. By doing so, it becomes possible to properly and firmly fix the cover member 21 to the surface of the existing flashing 10.

[0059] Furthermore, the cover member 21 may be fixed to the surface of the existing flashing 10 using only adhesive, without using fixing nails 30, as long as it can be securely held in place so as not to easily detach from the joints P1 and P2, or it may be fixed to the surface of the existing flashing 10 using screws or staples. Alternatively, it may be fixed to the surface of the existing flashing 10 by other common methods. In addition, the cover member 21 may be fixed to a location different from the surface of the existing flashing 10, such as the coping 16, the renovation roofing material 6, or the decorative slate 5.

[0060] As described above, the construction structure of the newly installed flashing 1 in the above embodiment is a construction structure for a flashing provided at the joints P1 and P2 between the roof 2 and the exterior wall 3. The flashing 1 comprises a cover member 21 that covers the surface side along the wall-side end 15 of the roof 2, and a cover engaging member 22 that engages and holds the cover member 21 at the wall-side end 15 of the roof 2. The cover engaging member 22 has a wall-side folded portion 27 that extends from the surface side of the wall-side end 26 toward the opposite wall side. The wall-side folded portion 27 is fixed to the surface side of the roof 2 with the wall-side folded portion 27 inserted into the gap S1 between the wall-side end 15 of the roof 2 and the lower end 18 of the exterior wall 3. The cover member 21 is fixed to the surface side of the roof 2 with a wall-side insertion portion 23 inserted into the wall-side folded portion 27 from the opposite wall side and engaged and held.

[0061] According to this structure, it is possible to create new joints P1 and P2 without removing the exterior wall material 14. Because the flashing 1 can be attached and removed, the ease of installation is greatly improved. Furthermore, even if existing flashing 10 is installed at the joints P1 and P2, the new flashing 1 can be installed quickly and easily over the existing flashing 10 without having to remove it, thus further improving the ease of installation.

[0062] Moreover, since the cover member 21 is engaged and held in place by inserting the wall-side insertion portion 23 into the wall-side folded portion 27 of the cover engagement member 22 from the opposite wall side, the effort required for repair work is further reduced, and flapping of the wall-side insertion portion 23 due to strong winds is reliably prevented. Furthermore, by installing the cover member 21 as described above, a sufficient gap (gap S1) is secured between the newly installed flashing 1 and the exterior wall 3 to allow air and condensation water to circulate.

[0063] Furthermore, the cover engaging member 22 is fixed to the surface side of the roof 2 by fixing screws 29, and the cover member 21 is fixed to the surface side of the roof 2 by overlapping it so as to cover the fixing points of the fixing screws 29 on the cover engaging member 22. With this structure, the cover engaging member 22 can be fixed to the surface side of the roof 2 quickly and securely without any hassle, and it is also possible to prevent rainwater from seeping into the back side of the cover engaging member 22 from the fixing points of the fixing screws 29.

[0064] Furthermore, the wall-side folded portion 27 is formed by bending the wall-side end of the cover engagement member 22 toward the surface at an acute angle, and this acute angle is set within the range of 10 to 20 degrees. With this structure, the cover member 21 can be quickly and easily engaged and held in place with the cover engagement member 22 simply by inserting the wall-side insertion portion 23 of the cover member 21 into the wall-side folded portion 27 of the cover engagement member 22 from the opposite wall side, thus further improving workability. In addition, it can reliably prevent the wall-side insertion portion 23 from flapping due to strong winds.

[0065] Furthermore, the cover member 21 and the cover engaging member 22 are fixed by overlapping them onto the surface of the existing flashing 10, which is installed along the wall-side end 15 of the roof 2 to cover its surface. In this way, the labor involved in the renovation work is further reduced by installing the new flashing 1 on top of the existing flashing 10 installed at the joints P1 and P2 without removing it. Moreover, by installing the new flashing 1 over the existing flashing 10 as described above, the waterproofing of the joints P1 and P2 is also improved.

[0066] Furthermore, the newly installed flashing 1 in the above embodiment is a flashing installed at the joints P1 and P2 between the roof 2 and the exterior wall 3, and comprises a cover member 21 that covers the surface side along the wall-side end 15 of the roof 2, and a cover engaging member 22 that engages and holds the cover member 21 at the wall-side end 15 of the roof 2. The cover engaging member 22 has a wall-side folded portion 27 that extends from the surface side of the wall-side end 26 toward the opposite wall side, and a fixing surface portion 28 that can be fixed to the surface side of the roof 2. The cover member 21 has a wall-side insertion portion 23 that is inserted into the wall-side folded portion 27 from the opposite wall side and engaged and held, and a decorative surface portion 24 that can be overlapped and fixed to the surface side of the roof 2.

[0067] In this design, the cover engagement member 22 is inserted into the gap S1 between the roof 2 and the exterior wall 3 from the opposite wall side and fixed to the surface side of the roof 2, while the cover member 21 is inserted into the wall-side folded portion 27 of the cover engagement member 22 from the opposite wall side and engaged and held in place, and fixed to the surface side of the roof 2. This allows the new flashing 1 to be installed on the joints P1 and P2 without removing the exterior wall material 14, thus significantly improving workability. [Explanation of Symbols]

[0068] 1. Newly installed rain flashing (rain flashing) 2. Roof 3. Exterior walls 15. Wall-side end of the roof 18 Lower end of exterior wall 21 Cover component 22 Cover engaging member 23 Wall-side insertion part 26 Wall-side end of cover engaging member 27 Wall-side folded section P1 Building side connection section (connection section) P2 girder side connection section (connection section) S1 gap

Claims

1. A construction structure for a flashing installed at the junction of the roof and the exterior wall, The aforementioned flashing comprises a cover member that covers its surface along the wall-side edge of the roof, and a cover engaging member that engages and holds the cover member at the wall-side edge of the roof. The cover engaging member has a wall-side folded portion that extends from the surface side of the wall-side end toward the opposite wall side, and the wall-side folded portion is fixed to the surface side of the roof while being inserted into the gap between the wall-side end of the roof and the lower end of the outer wall. The aforementioned cover member is characterized in that it is fixed to the surface side of the roof by being superimposed on it, with the wall-side insertion portion being inserted into the wall-side folded portion from the opposite wall side and engaged and held in place.

2. The cover engaging member is fixed to the surface side of the roof by a fastener. The construction structure for a flashing according to claim 1, characterized in that the cover member is fixed to the surface side of the roof so as to cover the fixing portion of the fastener in the cover engaging member.

3. The wall-side folded portion is formed by bending the wall-side end of the cover engaging member toward the surface at an acute angle, and the acute angle is in the range of 10 to 20 degrees, as described in claim 1 or 2.

4. The construction structure for a flashing according to any one of claims 1 to 3, characterized in that the cover member and the cover engaging member are fixed to the surface of an existing flashing that is provided along the wall-side end of the roof so as to cover its surface.

5. A flashing installed at the junction of the roof and the exterior wall, The roof comprises a cover member that covers the surface along the wall-side edge of the roof, and a cover engagement member that engages with and holds the cover member at the wall-side edge of the roof. The cover engaging member is formed by bending the wall-side end into a sharp V-shape, and has a wall-side folded portion extending from the surface side of the wall-side end toward the opposite wall side, and a fixing surface portion that can be fixed to the surface side of the roof. The cover member is a rain flashing having a wall-side insertion portion that is inserted into the gap on the inside of the wall-side folded portion from the open portion on the opposite wall side and held in place, and a decorative surface portion that can be overlapped and fixed to the surface side of the roof.

Images