JP2023090327A - Valley cover, renovation structure and construction method for existing roof using valley cover - Google Patents

Abstract

To repair a roof that includes a trough part without removing an existing valley plate.SOLUTION: A valley cover that is used when an existing roof including a trough part is repaired with a repairing roof material where a ridge side inserting part, a covering part and an eaves side folding part are integrally formed, includes a pair of upper surface cover pieces 110 where ridge side end parts can be inserted between existing roof materials overlaid stepwise in an eaves ridge direction, a pair of end surface cover pieces 120 that are connected downward from opposite end edges 112 of the pair of upper surface cover pieces 110 and cover valley side end surfaces of existing roof materials 1001, and valley plate cover pieces 130 crossing between lower edges 122 of the pair of end surface cover pieces 120 and extending along a surface of an existing valley plate 101. The upper surface cover pieces 110, the end surface cover pieces 120 and the valley plate cover pieces 130 are formed integrally.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a technique for repairing an existing roof using a roofing material for repair which is constructed by covering the existing thin plate-shaped roofing material which is constructed in a stepped manner in the direction of the eaves without peeling it off, and in particular to an existing roof. The present invention relates to a valley cover that has good workability because it can more reliably prevent rainwater from entering the valley when a roof includes a valley, and a repair structure and construction method for an existing roof using the valley cover.

Roofs of buildings such as houses are often constructed by stacking rectangular thin roofing materials in a stepped manner in the direction of the eaves. In this case, being stacked in a stepped manner means that the roof material placed on the upper side (ridge side) in the roof slope direction is placed on the upper end of the roof material placed on the lower side (eaves side) in the roof slope direction. It means that the lower ends are stacked one on top of the other. In order to reroof a roof covered with roofing materials in this way, the existing roofing materials (synonymous with slate tiles, decorative slates, etc.) are all removed and replaced with new roofing materials. It took time and effort to remove the roof, and it was difficult to replace the roof while the building was still in use. For this reason, the roof is reroofed by attaching roofing material for renovation (the same meaning as repair or repair, hereinafter not distinguished) to the surface of the existing roofing material and covering the existing roofing material (such a reroofing method is not a cover method) (also called construction method).

Roofs to be repaired using such a roofing material for repair may have a structure in which gabled roofs are connected to each other with their ridges perpendicular to each other. Such roofs are inclined so that the height from the ground gradually decreases from the ridge side to the eaves side. is formed with a linearly extending trough. Japanese Patent Laying-Open No. 2020-200615 (Patent Document 1) discloses a repair structure for repairing an existing flat plate slate roof including such valleys by a cover construction method.

In the repair structure disclosed in Patent Document 1, one roof is formed by connecting another roof with a different inclination direction to a roof that is inclined so that the height gradually decreases from the ridge side to the eave side. In a roof where a straight valley is formed at the boundary between the connected roofs, a plurality of flat slate tiles are partially formed at the end of each slate tile from the eaves side to the ridge side. The slate tiles on the ridge side are laid face-to-face in order, and the eaves side edge of the slate tile on the eaves side is superimposed on the ridge side edge of the eaves side slate tile. A repair plate is overlapped and fixed on the slate tile by face-to-face, covering the slate tile, and each valley side end of the repair plate opposing on both sides in a direction intersecting the extending direction of the valley. a rectangular plate-shaped valley plate that is covered along the valley on the valley over each of the repair plates, and the valley plate is folded back toward the ridge on the eaves side end of the valley plate on the lower surface side. A rectangular folded portion is formed to wrap the eaves-side ends of the slate roof tiles and the repair plate, and the eaves-side ends of the ridge-side slate roof tiles stacked on each other and the eaves-side ends are formed at the ridge-side ends. A rectangular extension is formed so as to be inserted into a gap between the slate roof tile and the edge of the ridge and is fixed. is provided with an engaging piece that engages with the edge of the slate roof tile or the repair plate.

Japanese Patent Application Laid-Open No. 2020-200615

However, in the repair structure disclosed in Patent Document 1, since the repair plate (repair roof material) is constructed under the valley plate (repair valley cover), there is a possibility that rainwater may enter through this gap. It is difficult to completely eliminate it (difficult to achieve good workability). In addition, the valley plate (repair valley cover) used in the repair structure disclosed in Patent Document 1 is formed by cutting and bending a thin metal plate, but due to the complexity of the structure, We cannot deny the possibility that the manufacturing cost will rise.

The present invention has been developed in view of the above-mentioned problems of the prior art, and the purpose thereof is to remove (remove) the existing valley plate and the existing roof material, including the valley. To provide a valley cover, a repair structure of an existing roof using the valley cover, and a construction method for repairing an existing roof while realizing good workability and avoiding an increase in cost.

In order to achieve the above object, the modified structure according to the present invention takes the following technical means.
That is, the valley cover according to an aspect of the present invention is a roof surface in which two or more roof surfaces in which existing thin plate-shaped roof materials are stacked in a stepped manner in the direction of the eaves are connected while being inclined in different directions. The ridge-side insertion part, the covering part, and the eaves-side folding part integrally form the existing roof including the valley where the existing roof materials are separated by a predetermined distance and where the existing valley plate is constructed at the connection point. a pair of upper surface cover pieces that can be inserted between the existing roof materials that are stacked stepwise in the direction of the eaves at the ridge side end portions thereof, the valley cover being used when repairing with the roof materials for repair that have been installed; and a pair of end face cover pieces that cover the valley side end faces of the existing roof material, and a surface of the existing valley plate extending between the lower edges of the pair of end face cover pieces. The top surface cover piece, the end surface cover piece and the valley plate cover piece are integrally formed.

Preferably, the valley plate cover piece can be constructed such that the height of the end face cover piece is gradually increased from the ridge side toward the eaves side so as to follow the surface of the existing valley plate.
Further, a repair structure according to another aspect of the present invention is a roof in which two or more roof surfaces in which existing thin plate-shaped roof materials are stacked in a stepped manner in the direction of the eaves are connected while being inclined in different directions. A repair structure of an existing roof including a valley where the existing roof materials on the surface are positioned at a predetermined distance and where the existing valley plate is constructed at the connection point, the ridge side insertion part, the covering part, and the eaves side folding part and a valley cover integrally formed with a pair of upper surface cover pieces, a pair of end surface cover pieces and a valley plate cover piece, wherein the pair of upper surface cover pieces are inserted between the existing roof materials stacked stepwise in the eaves ridge direction of each roof surface, and connected downward from the opposite edges of the pair of top cover pieces The valley cover is provided so that the end face cover piece covers the valley side end face of the existing roof material, and the valley plate cover piece extending between the lower edges of the pair of end face cover pieces is along the surface of the existing valley plate, The roofing material for repair is provided by inserting the ridge-side insertion part between the existing roofing materials so that the valley side end of the covering part overlaps the top cover piece.

Preferably, the valley cover is provided for each existing roof material that is stacked in a stepped manner in the eaves ridge direction, and the valley cover can be configured to be stacked in a stepped manner in the eaves ridge direction.
More preferably, the eaves valley cover can be configured such that the eaves-side end is bent downward so as to cover the eaves-side end surface of the existing valley plate.

In a construction method according to still another aspect of the present invention, two or more roof surfaces in which existing thin plate-shaped roof materials are stacked in a stepped manner in the direction of the eaves are connected with being inclined in different directions and connected. The existing roof materials on the roof surface are positioned at a predetermined distance from each other, and the existing roof including the valley where the existing valley plate is constructed at the connection point is integrated with the ridge side insertion part, the covering part, and the eaves side folding part. A construction method for repairing using a roof material for repair formed in the roof and a valley cover in which a pair of upper surface cover pieces, a pair of end surface cover pieces and a valley plate cover piece are integrally formed, the eaves ridge The valley cover installation step is repeated from the eaves side to the ridge side for each existing roof material that is stacked in a stepped manner in the direction, and the valley cover installation step is repeated from the eaves side to the ridge side. After the valley repair step of covering the existing valley plate over the entire length in the eaves ridge direction with the valley cover, and the valley repair step, for each existing roof material stacked in a stepped manner in the eaves direction, the repair A repair roof material installation step is performed from the ridge side so that the roof materials are stacked in a stepped manner in the direction of the eaves ridge, and the repair roof material adjacent to the valley overlaps the upper surface cover piece of the valley cover. and a roof surface repair step of repeatedly covering the existing roof material over the entire length of the roof surface in the eaves ridge direction with the repair roof material toward the eaves side.

Preferably, the valley cover installation step includes inserting the ridge-side end portions of the pair of upper surface cover pieces between the existing roof materials that are stacked in a stepped manner in the eaves ridge direction of each roof surface to form the pair of A pair of end surface cover pieces connected downward from the opposite edges of the upper surface cover pieces cover the valley side end surfaces of the existing roof material, and the valley plate cover piece extending between the lower edges of the pair of end surface cover pieces is the existing The valley cover is provided along the surface of the valley board, and the repair roofing material installation step includes inserting the ridge side insertion part so that the valley side end of the covering part overlaps the top cover piece. It can be constructed such that the repair roofing material is provided by being inserted between the roofing materials.

More preferably, the valley cover installing step can be configured to provide the valley cover by cutting a portion of the eaves side edge of the valley cover.
More preferably, the step of installing the roofing material for repair includes installing the roofing material for repair by cutting the roof material for repair obliquely so that the valley side end portion of the covering portion overlaps the upper surface cover piece. can be configured to

According to the present invention, a roof including a valley portion can be repaired without removing (removing) the existing valley plate or the existing roof material while realizing good workability and avoiding an increase in cost. It is possible to provide a valley cover, an existing roof repair structure using the valley cover, and a construction method.

FIG. 4 is a diagram for explaining a portion of the roof to be repaired to which the repair structure according to the present invention is applied; 1 is a perspective view of a roof during renovation work using a valley cover 100 (for renovation) according to the present invention; FIG. 1 is a perspective view of a roof after repair work using valley cover 100 and roof repair material 1000. FIG. Figure 3 is a perspective view of the valley cover 100 shown in Figure 2; Figure 3 is a plan view of the valley cover 100 shown in Figure 2; FIG. 4 is a cross-sectional view of the valley portion after repair work shown in FIG. (A) Cross-sectional view in the direction perpendicular to the eaves ridge direction, (B) Cross-sectional view of arrow 7B in FIG. 7 (A), (C) FIG. 7 (A) It is a cross-sectional view of arrow 7C in. 1 is a diagram (part 1) for explaining a construction method for realizing a repair structure for an existing roof according to the present invention; FIG. FIG. 2 is a diagram (part 2) for explaining a construction method for realizing a repair structure for an existing roof according to the present invention; FIG. 3 is a diagram (part 3) for explaining a construction method for realizing a repair structure for an existing roof according to the present invention; FIG. 4 is a diagram (part 4) for explaining a construction method for realizing a repair structure for an existing roof according to the present invention; FIG. 10 is a diagram (No. 5) for explaining a construction method for realizing a repair structure for an existing roof according to the present invention; 1 is a diagram (1) for explaining a rain flashing cover related to the existing roof repair structure according to the present invention; FIG. FIG. 10 is a diagram (part 2) for explaining a rain flashing cover related to the existing roof repair structure according to the present invention; FIG. 11 is a diagram (part 3) for explaining a rain flashing cover related to the existing roof repair structure according to the present invention; FIG. 4 is a diagram (part 4) for explaining a rain flashing cover related to the existing roof repair structure according to the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION A valley cover, an existing roof repair structure and a construction method using the valley cover according to embodiments of the present invention will be described below in detail with reference to the drawings. First, the valley cover will be explained, then the existing roof repair structure using this valley cover will be explained, the construction method for realizing the existing roof repair structure will be explained, and finally the present invention will be described. [0042] A rain flashing cover related to the existing roof repair structure according to the embodiment will be described.

<Valley cover>
The valley cover 100 (for repair) according to the present invention has two or more roof surfaces in which existing thin plate-shaped roof materials 1001 (decorative slate) are stacked in a stepped manner in the direction of the eaves ridge and connected with inclination in different directions. The existing roof materials 1001 on the connected roof surface are positioned at a predetermined distance from each other, and the existing roof including the valley portion 1C where the existing valley plate 101 is constructed at the joint portion is divided into the ridge side insertion portion, the covering portion, and the eaves side. It is a valley cover used when repairing with a roofing material 1000 for repair integrally formed with a folded part. The repair structure and construction method of the present invention include the roof material for repair 1000. The roof material for repair 1000 is, for example, Japanese Patent Laid-Open No. 2021-017709 and Japanese Patent Laid-Open No. 2021-017709 filed by the applicants of the present application. An example of this is the retrofit roofing material disclosed in US Pat. No. 119,278. The repair roof material 1000 is the repair roof material 100 described in these publications (hereinafter sometimes referred to as the above-mentioned two publications), the ridge-side insertion portion is the ridge-side insertion portion 130, and the coating The part is the decorative surface part 110 and the eaves-side folded part is the eaves-side folded part 120, which are integrally formed.

FIG. 1 shows an example of a flat plate slate roof on which an existing thin plate-shaped roof material 1001 is laid, which is repaired by applying this valley cover 100 . This roof 1 has a structure in which roofs of a gable structure are connected to each other with their ridges 1A perpendicular to each other. The roof 1 is inclined so that the height from the ground gradually decreases from the ridge 1A side to the eaves 1B side, and the connected roofs have different inclination directions. A linearly extending valley 1C is formed at the boundary between the roofs.

A plurality of flat plate-shaped existing roofing materials 1001 are laid on the roof 1 . Each of the existing roofing materials 1001 is sequentially laid from the eaves 1B side toward the ridge 1A side in a state where the ends of the respective existing roofing materials 1001 are partially overlapped face-to-face. The eaves side end of 1001 is superimposed on the ridge side end of the existing roof material 1001 on the eaves 1B side. The ridge 1A and the valley 1C of the roof 1 are, as is well known, provided with a rain cover. In addition, in FIG. 1, the outer wall 2 of the house is indicated by a broken line. The existing roofing material 1001 is, for example, a roofing material constructed on the foundation of the roof 1 (cladding board 1002, underlaying material 1003, etc., which are the foundation materials shown in FIGS. 6 and 7).

When using the valley cover 100 according to the present embodiment, the existing valley plate 101 and the existing roof material 1001, including the valley portion 1C of the roof 1 shown in FIG. As shown in FIG. 2, the existing valley plate 101 is covered with the valley cover 100, and after the valley cover 100 is constructed, the existing roofing material 1001 is covered with the repair roofing material 1000, and as shown in FIG. The construction is completed as shown, good workability can be realized, and the existing roof including the valley portion 1C can be repaired while avoiding an increase in cost. After repairing the existing roof including the valley portion 1C using the valley cover 100 and the repair roof material 1000, the direction of the eaves is as shown in FIG. (Decorative surface portion 110 in the above-mentioned two publications) is constructed so that the valley side end portion overlaps with the top cover piece 110 of the valley cover 100 . In addition, as shown in FIG. 6B, it is also possible to construct the repair roof material 1000 so as to have a folded portion 1000C that is folded downward at the valley side end portion.

In addition, the present invention is not limited to the roof 1 shown in FIG. 1 to 16, which are referred to for describing this embodiment, do not show all the members related to the construction structure of the roof. Less relevant are not referenced or described. In addition, in FIGS. 1 to 16, which are referred to for describing the present embodiment, there are cases where schematic descriptions and hidden lines are described in order to facilitate understanding of the present invention. In some cases, there are cases in which there is no agreement between the figures due to the fact that parts that should be indicated by hidden lines are indicated by solid lines, and details are omitted. Also, the same configurations (structures) in different drawings are denoted by the same reference numerals, and description thereof will not be repeated. Here, the ridge side is synonymous with the water side, and the eaves side is synonymous with the water side, and they are used without distinction in the description of the present invention.

As shown in FIGS. 4 and 5, the valley cover 100 according to the present embodiment has a ridge-side end portion (a portion corresponding to the length L (7A) shown in FIG. 7) that is stacked in a stepped manner in the eaves ridge direction. a pair of top cover pieces 110 that can be inserted between the existing roofing members 1001, and a pair of end face covers connected downward from the opposing edges 112 of the pair of top cover pieces 110 and covering the valley side end faces of the existing roofing members 1001. and a valley plate cover piece 130 along the surface of the existing valley plate 101 between the lower edges 122 of the pair of end face cover pieces 120, the top cover piece 110, the end face cover piece 120 and the valley plate cover piece 130 are integrally formed.

Here, in this valley cover 100, the valley plate cover piece 130 extends from the ridge side (water side) to the eaves side (underwater side) so that the height L of the end face cover piece 120 extends along the surface of the existing valley plate 101. gradually increased toward Specifically, as shown in FIGS. 4 and 5, the height L (D) of the end cover piece 120 on the underwater side is larger (L (U)<L(D)), the height L of the end face cover piece 120 is gradually increased (increased) from the water side (height L(U)) toward the water side (height L(D)). ing.

By gradually increasing the height L of the end face cover piece 120 in this manner, the ridge side end of the valley cover 100 corresponding to the length L (7A) shown in FIG. The ridge side end portion of the upper surface cover piece 110 corresponding to (7A)) can be inserted between the existing roof materials 1001, and the valley cover 100 can be inserted in the eaves ridge direction as shown in FIG. ), and the existing valley plate 101 can be covered with the valley cover 100 so that the valley plate cover piece 130 follows the surface of the existing valley plate 101 . More specifically, as shown in FIG. 7A, in one valley cover 100, the length L (U) of the end face cover piece 120 on the water side corresponds to the two existing roof panels 1001. The length L (D) of the end face cover piece 120 on the underwater side corresponds to the three existing roof panels 1001 . The height L of the end cover piece 120 is gradually increased (increased) from the water side (height L(U)) toward the water side (height L(D)). Since the height L of the end face cover piece 120 is set in this way, as shown in FIGS. The ridge side end of the top cover piece 110 corresponding to the length L (7A) as shown in FIG. In addition, the existing valley plate 101 can be covered with the valley cover 100 so that the valley plate cover piece 130 follows the surface of the existing valley plate 101 (so that it abuts without opening a gap).

<Repair structure>
Next, an existing roof repair structure (using the valley cover 100 and the roof repair material 1000) according to the present invention will be described.
In the existing roof repair structure according to the present invention, two or more roof surfaces in which thin plate-shaped existing roof materials 1001 (decorative slate) are stacked in a stepped manner in the direction of the eaves are connected with inclination in different directions and connected. This is a repair structure for an existing roof including a valley portion 1C in which existing roof materials 1001 on the roof surface are positioned at a predetermined distance from each other and existing valley plates 101 are constructed at joints.
As shown in FIGS. 2 to 7, this repair structure includes a ridge-side insertion portion (ridge-side insertion portion 130 in the above-mentioned two publications), a covering portion (the decorative surface portion 110 in the above-mentioned two publications), and an eaves-side folded portion (above-mentioned 2 A repair roofing material 1000 integrally formed with the eaves side folded part 120 in the publication, and a pair of upper surface cover pieces 110, a pair of end surface cover pieces 120 and a valley plate cover piece 130 are integrally formed. and a valley cover 100 .

As for the valley cover 100, the ridge-side ends of the pair of top cover pieces 110 (the portion corresponding to the length L (7A) shown in FIG. 7) are stacked in a stepped manner in the eaves ridge direction of each roof surface. and the rest of the pair of upper surface cover pieces 110 (the portion on the eaves side from the ridge side end) is placed on the upper surface of the existing roofing material 1001 on the eaves side on the valley side. , a pair of end cover pieces 120 connected downward from the opposing edges 112 of the pair of top cover pieces 110 cover the valley side end surfaces of the existing roofing material 1001, and extend between the lower edges 122 of the pair of end cover pieces 120. The valley cover 100 is attached to the existing valley plate 10 so that the plate cover piece 130 follows the surface of the existing valley plate 101 .
1 and the existing roof material 1001 (constructed).

Regarding the existing roof material 1001, the ridge-side insertion portion (ridge-side insertion portion 130 in the above-mentioned two publications) is already installed so that the valley-side end portion of the covering portion (the decorative surface portion 110 in the above-mentioned two publications) overlaps with the top cover piece 110. A roofing material 1000 for repair is provided (constructed) by being inserted between the roofing materials 1001. - 特許庁At this time, as described above with reference to FIG. 6(B), the valley side end portion of the repair roof material 1000 may be folded downward to provide a folded portion 1000C.
Here, the valley cover 100 used in this repair structure is provided for each of the existing roof materials 1001 stacked in a stepped manner in the direction of the eaves ridge, and the valley covers 100 are stacked in a stepped manner in the direction of the eaves ridge.

Also, the eaves valley cover 100 can be constructed by bending the eaves side end portion downward so as to cover the eaves side end surface of the existing valley plate 101 . More specifically, as shown in FIG. 8, the valley cover 100 to be constructed at the edge of the eaves is constructed by processing the eaves-side end portion along the existing valley plate 101 . More specifically, the position indicated by the dotted line in FIG. 8(A) is cut, and the position indicated by the one-dot chain line in FIG. 8(A) is bent downward by approximately 90 degrees. Furthermore, it may be folded to the back side at the position indicated by the dashed line shown in FIG. 8(B). By bending the eaves-side end portion in this way, alignment becomes easier. In addition, you may cut|disconnect in a mountain shape, without bending.

<Construction method>
Next, a construction method (hereinafter sometimes simply referred to as a construction method) for realizing a repair structure for an existing roof (using the valley cover 100 and the roof material for repair 1000) according to the present invention will be described. .
In the construction method according to the present invention, two or more roof surfaces in which existing thin plate-shaped roof materials 1001 (decorative slate) are stacked in a stepped manner in the direction of the eaves are connected with inclination in different directions, and the connected roof surfaces are connected. The existing roof materials 1001 are positioned at a predetermined distance from each other and the existing roof including the valley portion 1C where the existing valley plate 101 is constructed at the connection point is inserted into the ridge side insertion portion (ridge side insertion portion 130 in the above-mentioned 2 publications) and a covering portion (decorated surface portion 110 in the above-mentioned two publications) and an eaves-side folded portion (eaves-side folded portion 120 in the above-mentioned two publications) are integrally formed, and a pair of top cover pieces 110. and a pair of end face cover pieces 120 and a valley plate cover piece 130 are integrally formed using the valley cover 100 for repair.
This construction method, as shown in FIGS. 2 to 12 (especially FIGS. 8 to 12), roughly includes the following two steps.

・Valley repair step For each existing roof material 1001 stacked in a stepped manner in the direction of the eaves, a valley cover installation step is provided by stacking the valley covers 100 in a stepped manner in the direction of the eaves, facing from the eaves side to the ridge side. , the existing valley plate 101 covering the entire length in the eaves ridge direction in the valley portion 1C is covered with the valley cover 100. As shown in FIG.
・Roof surface repair step After the valley repair step, for each existing roof material 1001 stacked in a stepped manner in the direction of the eaves ridge, the roof materials 1000 for repair are stacked in a stepped manner in the direction of the eaves and adjacent to the valley. The repair roof material installation step is repeated from the ridge side to the eaves side so that the repair roof material 1000 overlaps the top cover piece 110 of the valley cover 100, and the entire length of the roof surface in the eaves ridge direction is repeated. An existing roofing material 1001 is covered with a roofing material 1000 for repair.

Here, in the valley cover installation step included in the valley repair step, the ridge-side ends of the pair of upper surface cover pieces 110 (portions corresponding to the length L (7A) shown in FIG. 7) are attached to the respective roof surfaces. are inserted between the existing roofing materials 1001 stacked stepwise in the direction of the eaves ridge, and the remaining portion of the pair of upper surface cover pieces 110 (the portion on the eaves side from the ridge side end) is the existing roofing material on the eaves side A pair of end cover pieces 120 placed on the valley side upper surface of the roof member 1001 and connected downward from the opposing edges 112 of the pair of top cover pieces 110 cover the valley side end surfaces of the existing roofing material 1001, and the pair of end cover pieces 1001 are provided. The valley cover 100 is constructed on the existing valley plate 101 and the existing roofing material 1001 so that the valley plate cover piece 130 extending between the lower edges 122 of the pieces 120 follows the surface of the existing valley plate 101 .

In addition, in the repair roof material installation step included in the roof surface repair step, the ridge side insertion part (the above-mentioned 2 The ridge-side insertion part 130 in the publication is inserted between the existing roof materials 1001 to install the repair roof material 1000 .
Here, in the valley cover installation step, it is also preferable to construct the valley cover 100 by cutting a part of the eaves side end of the valley cover 100 for the following reasons. As shown in FIG. 9A, depending on the construction state of the existing roofing material 1001, the positions of the eaves-side edges of the existing roofing material 1001 facing each other across the valley 1C may be displaced vertically. . In such a case, cut along the dashed line shown in FIG. 8(B) or cut along the hatched portion shown in FIG. 8(C).

In addition, in the repair roof material installation step, the repair roof material closest to the valley portion 1C is placed so that the valley-side end of the covering portion (the decorative surface portion 110 in the above two publications) of the valley cover 100 overlaps the top cover piece 110. Cutting 1000 obliquely and constructing roofing material 1000 for repair is also preferable in the following points. As shown in FIG. 11, the repair roofing material 1000 has a rectangular shape when viewed from above when manufactured. ) cannot be constructed so that the valley side end of ) overlaps with the top cover piece 110 of the valley cover 100 (in the rectangular shape, the valley 1C cannot be constructed with the repair roof material 1000 closest to the valley cover 100). For this reason, as shown in FIG. 11, the repair roof material 1000 is cut obliquely, the roof material for repair 1000 is constructed except for the hatched portion, and the covering part (the decorative part in the above-mentioned two publications) of the valley cover 100 is applied. The repair roof material 1000 is constructed so that the valley side end of the face portion 110) overlaps the top cover piece 110. As shown in FIG.

In the following, the construction method will be described in detail with reference to FIGS. Although the construction method described below may be described in detail, the present invention is not limited to the construction method described below.

・Valley repair step As described above, the valley cover 100 is installed by stacking the valley covers 100 in a stepped manner in the direction of the eaves for each of the existing roof materials 1001 that are stacked in a stepped manner in the direction of the eaves. Repeat the steps from the eaves side to the ridge side.
(1) As shown in FIGS. 8(A) and 8(B), the eaves side edge of the first stage valley cover 100 is cut to match the eaves shape of the eaves tip of the existing valley plate 101. and bent downward by approximately 90 degrees to form a bent portion.
(2) As shown in FIG. 8(C), the adhesive S is applied to the existing valley plate 101 in three parallel rows in the eaves ridge direction so as to correspond to the exposed length of about one valley cover 100. .
(3) The ridge-side end portions (portions corresponding to the length L (7A) shown in FIG. 7) of the pair of upper surface cover pieces 110 of the first stage valley cover 100 extend in the eaves ridge direction of each roof surface. It is inserted between the existing roof materials 1001 (between the first and second stages) that are stacked in a stepped manner, and the remaining portion of the pair of upper surface cover pieces 110 (the portion on the eave side from the ridge side end) is It is placed on the upper surface of the valley side of the existing roof material 1001 (first stage) on the eaves side, and the edge of the eaves tip of the existing valley plate 101 is covered with the eaves side end (bent part) of the valley cover 100 of the first stage.

(4) The valley cover 100 of the first stage is pressed from above and adhered firmly.
(5) From the eaves side to the ridge side, the valley covers 100 on and after the second stage are sequentially constructed. Here, basically, it is not necessary to cut the valley cover 100, but the height position in the flow direction (the eaves ridge direction) of the eaves side edges of the left and right existing roof materials 1001 located across the valley 1C is Otherwise, the eaves end of the valley cover 100 may be cut as described with reference to FIG.
(6) As shown in FIG. 10, the adhesive S is applied to the existing valley plate 101 in three lines parallel to the eaves ridge direction so as to correspond to the exposed length of about one of the second-tier valley covers 100. do. Further, a line of adhesive S is applied in a substantially horizontal direction on the ridge-side upper surface of the valley cover 100 of the first stage on the eave side of the first stage.

(7) The ridge-side end portions (portions corresponding to the length L (7A) shown in FIG. 7) of the pair of upper surface cover pieces 110 of the second-stage valley cover 100 extend in the eaves ridge direction of each roof surface. It is inserted between the existing roof materials 1001 (between the second and third tiers) that are stacked in a stepped manner, and the remaining portion of the pair of top cover pieces 110 (the portion on the eave side from the ridge side end) is Existing roof material 1001 on the eaves side (
second stage), and the eaves-side edge of the existing roof material 1001 on the second stage and the eaves-side edge of the valley cover 100 on the second stage are substantially aligned. In addition, the eaves side of the second-tier valley cover 100 is placed on the ridge-side upper surface of the first-tier valley cover 100 (the portion where the adhesive S is applied in one row). Here, although it is an example, it is preferable that the overlapping margin is 50 mm or more.
(8) The valley cover 100 of the second stage is pressed from above and adhered firmly.
(9) As shown in FIG. 10, the adhesive S is applied to the existing valley plate 101 in three rows parallel to the eaves ridge direction so as to correspond to the exposed length of about one valley cover 100 on the third stage. Apply. Further, a line of adhesive S is applied in a substantially horizontal direction on the ridge-side upper surface of the second stage valley cover 100 on the first stage eaves side.

(10) The ridge-side end portions (portions corresponding to the length L (7A) shown in FIG. 7) of the pair of upper surface cover pieces 110 of the third stage valley cover 100 extend in the eaves ridge direction of each roof surface. It is inserted between the existing roof materials 1001 (between the third and fourth tiers) that are stacked in a stepped manner, and the remaining portion of the pair of top cover pieces 110 (the portion on the eaves side from the ridge side end) is It is placed on the upper surface of the valley side of the existing roof material 1001 (third stage) on the eaves side, and the eaves side edge of the existing roof material 1001 of the third stage and the eaves side edge of the valley cover 100 of the third stage are substantially match. In addition, the eaves side of the valley cover 100 of the third stage is superimposed on the upper surface of the valley cover 100 of the second stage on the ridge side (the part where the adhesive S is applied in one row). Again, although this is just an example, the overlapping margin is preferably 50 mm or more.

(11) The valley cover 100 of the third stage is pressed from above and adhered firmly.
(12) The valley cover 100 is constructed in the same manner from the 4th stage to the Nth stage which is the topmost stage.
(13) By repeating construction of the valley cover 100 from the eaves side to the ridge side, as shown in FIG. Construction of the partial renovation step is completed.

・Roof surface repair step After the valley repair step (after the valley cover 100 is covered over the existing valley plate 101 over the entire length of the eaves ridge direction in the valley 1C and the construction of the valley repair step is completed), roof material for repair The ridge-side inserting portion (ridge-side inserting portion 130 in the above-mentioned two publications) is inserted between the existing roof materials 1001 so that the valley side end portion of the covering portion (decorative surface portion 110 in the above-mentioned two publications) of 1000 overlaps the top cover piece 110. The roof material 1000 for repair is constructed by inserting it. This construction method shown in FIG. 11 is the same as the construction method disclosed in the above two publications. As a construction method not disclosed in the above-mentioned two publications, the repair roof material 1000 closest to the valley 1C side is obliquely cut as shown in FIG. ) is laid over the top cover piece 110 on the valley side. Further, the adhesive S (S1) closest to the valley side is applied parallel to and near the valley cover 100 . If the construction of the repair roofing material 1000 is repeated sequentially from the ridge side to the eaves side, as shown in FIG. Similarly, if the repair roof material 1000 is successively applied to the other roof surface from the ridge side to the eaves side, as shown in FIG. When the roofing material 1000 is installed, the construction method for realizing an existing roof repair structure (using the valley cover 100 and the repair roofing material 1000) according to the present invention is completed.

As described above, according to the valley cover and the existing roof repair structure and construction method using the valley cover according to the present embodiment, the valley cover and the existing roof material are not removed (removed). The roof including the part can be repaired while realizing good workability and avoiding an increase in cost.

<Rainproof cover>
When repairing an existing roof as described above, it may be necessary to repair not only the valley but also the interface between the wall and the roof. Below, referring to FIGS. 13 to 16, the flashing cover 200 and its construction method related to the existing roof repair structure according to the embodiment of the present invention will be described in detail. The rain flashing cover 200 is roughly classified into the stream direction rain flashing cover 200 shown in FIG. 13 and the girder direction rain flashing cover 200 shown in FIG. It is roughly divided into the construction of material 1000. Then, as shown in FIG. 15, the construction method includes a method of completing the construction of all the rain flashing covers 200 before constructing the roofing material 1000 for repair and then constructing the roofing material 1000 for repair. As shown in 16, before constructing the rain flashing cover 200, the repair roof material 1000 is constructed halfway, the construction of all the rain flashing covers 200 is completed in the middle, and then the rest of the repair. There is a method of constructing the roofing material 1000 for roofing.
The tip of the rain flashing cover 200 is longer than the holding piece of the existing rain flashing cover by 10 mm or more in order to abut on the surface of the repair roof material 1000 .

<Installation method of rain guard cover>
First, the construction method of the rain flashing cover 200 will be described in detail below.
(1) A line of adhesive is applied to the rear surface of the rain flashing cover 200 on the wall side over substantially the entire length in the longitudinal direction.
(2) The wall-side end of the rain flashing cover 200 is inserted into the gap between the existing exterior wall material and the existing rain flashing 201, and the rain flashing cover 200 is pressed from above and firmly adhered.
(3) In the case of the flow direction shown in FIG. 13, the eaves-side end of the ridge-side flashing cover 200 overlaps the ridge-side end of the eaves-side flashing cover 200 . Here, although it is an example, it is preferable that the overlapping margin is 50 mm or more.
(4) In the case of the girder direction shown in FIG. 14, construction is performed so that the ends of the rain flashing covers 200 located on the left and right sides overlap each other. Again, although this is just an example, the overlapping margin is preferably 50 mm or more.
(5) Fix the rain flashing cover 200 to the existing coping of the eaves side edge with nails (or screws).
(6) In the same way, construct sequentially.
Next, a method for constructing the roofing material 1000 for repair will be described in detail. The construction method of the repair roofing material 1000 is the same as the construction method disclosed in the above two publications.

(A) Flow direction First pattern (Fig. 15)
- After constructing all the rain flashing covers 200, construct the repair roof material 1000 from the ridge side toward the eaves side.
- The wall-side end of the repair roofing material 1000 is inserted between the existing flashing 201 and the existing roofing material 1001 .
Second pattern (Fig. 16)
・Construct the repair roof material 1000 in multiple stages from the ridge side. Here, a plurality of steps means the number of steps to the extent that the repair roof material 1000 is not stepped on when constructing the rain flashing cover 200 . After constructing the roofing material 1000 for repair in multiple stages from the ridge side (during construction of the roofing material 1000 for repair), all the rain flashing covers 200 are constructed.

- The rest of the repair roof material 1000 is constructed from the ridge side toward the eaves side.
When splicing the rain flashing cover 200, insert the ridge side edge of the eaves side rain flashing cover 200 under the eaves side edge of the ridge side rain flashing cover 200 for construction.
- The wall-side end of the repair roofing material 1000 is inserted between the existing flashing 201 and the existing roofing material 1001 .

(B) In the case of girder direction - After constructing all the repair roof materials 1000 along the wall, construct the rain guard cover 200 .
The wall-side (ridge-side) end of the repair roofing material 1000 is inserted between the existing rain flashing 201 and the existing roofing material 1001 .
- After constructing all the rain flashing covers 200 in the girder direction, construct the remaining repair roof material 1000 from the ridge side toward the eaves side.

As described above, according to the rain flashing cover 200 and its construction method related to the existing roof repair structure according to the present embodiment, the existing roof including the existing rain flashing 201 is replaced with the rain flashing cover 200 (approximately a roof for repair). 1000) can be suitably modified.
It should be noted that the embodiments disclosed this time should be considered as examples in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning of equivalents of the scope of the claims.

INDUSTRIAL APPLICABILITY The present invention is preferable for a repair structure in which an existing roof can be repaired without removing the existing roof members (valley plate, existing roof material), and without removing (removing) the existing valley plate that has been constructed or the existing roof material. It is particularly preferable in that the roof including the valley can be repaired while realizing good workability and avoiding an increase in cost.

100 (for repair) valley cover 101 existing valley board 1000 roof material for repair 1001 existing roof material (decorative slate)

Claims (9)

Two or more roof surfaces, in which thin plate-shaped existing roof materials are stacked in a stepwise manner in the direction of the eaves, are connected while being inclined in different directions, and the existing roof materials of the connected roof surfaces are positioned at a predetermined distance from each other. The valley used when repairing the existing roof including the valley where the existing valley plate is constructed at the connection point with the repair roof material in which the ridge side insertion part, the covering part and the eaves side folding part are integrally formed is a cover,
a pair of upper surface cover pieces that can be inserted between the existing roof materials that are stacked in a stepped manner in the direction of the eaves at the ridge-side ends;
a pair of end surface cover pieces connected downward from the opposed edges of the pair of upper surface cover pieces and covering the valley side end surface of the existing roof material;
a valley plate cover piece extending between the lower edges of the pair of end face cover pieces and along the surface of the existing valley plate,
A valley cover, wherein the top cover piece, the end face cover piece, and the valley plate cover piece are integrally formed. 2. The valley according to claim 1, wherein the height of the end face cover piece is gradually increased from the ridge side toward the eaves side so as to follow the surface of the existing valley plate. cover. Two or more roof surfaces, in which thin plate-shaped existing roof materials are stacked in a stepwise manner in the direction of the eaves, are connected while being inclined in different directions, and the existing roof materials of the connected roof surfaces are positioned at a predetermined distance from each other. A repair structure of an existing roof including a valley where an existing valley plate is constructed at a connection point with
a roofing material for repair in which a ridge-side insertion portion, a covering portion, and an eaves-side folded portion are integrally formed;
including a valley cover integrally formed with a pair of top cover pieces, a pair of end face cover pieces and a valley plate cover piece,
the ridge-side ends of the pair of upper surface cover pieces are inserted between the existing roof materials stacked in a stepped manner in the eaves ridge direction of each roof surface,
a pair of end surface cover pieces connected downward from the opposing edges of the pair of upper surface cover pieces cover the valley side end surface of the existing roof material;
The valley cover is provided so that the valley plate cover piece extending between the lower edges of the pair of end face cover pieces is along the surface of the existing valley plate,
The existing roof, wherein the roofing material for repair is installed by inserting the ridge-side insertion part between the existing roofing materials so that the valley side end of the covering part overlaps the top cover piece. renovation structure. The valley cover is provided for each existing roof material stacked in a stepped manner in the direction of the eaves,
The existing roof repair structure according to claim 3, characterized in that the valley covers are stacked in a stepped manner in the direction of the eaves. 5. The existing roof repair structure according to claim 3, wherein the eaves valley cover is bent downward at the eaves side end so as to cover the eaves side end surface of the existing valley plate. Two or more roof surfaces, in which thin plate-shaped existing roof materials are stacked in a stepwise manner in the direction of the eaves, are connected while being inclined in different directions, and the existing roof materials of the connected roof surfaces are positioned at a predetermined distance from each other. The existing roof including the valley where the existing valley plate is constructed at the connecting point, the roofing material for repair in which the ridge side insertion part, the covering part and the eaves side folding part are integrally formed, and a pair of upper surface covers A construction method for repairing using a valley cover in which a piece, a pair of end face cover pieces and a valley plate cover piece are integrally formed,
The valley cover installation step is repeated from the eaves side to the ridge side for each of the existing roof materials that are stacked in a stepped manner in the eaves ridge direction, and the valley cover installation step is repeated from the eaves side to the ridge side. a valley portion repair step of covering the existing valley plate over the entire length in the eaves ridge direction in the part with the valley cover;
After the valley portion repair step, for each existing roof material that is stacked in a stepped manner in the eaves ridge direction, the repair roof materials are stacked in a stepped manner in the eaves direction direction, and a repair roof adjacent to the valley portion is constructed. The step of installing the roofing material for repair provided so that the roof material overlaps the upper surface cover piece of the valley cover is repeated from the ridge side toward the eaves side to cover the entire length of the existing roofing material on the roof surface in the eaves ridge direction. and a roof surface repair step of covering the roof material for repair on the roof surface. In the valley cover installation step, the ridge-side ends of the pair of top cover pieces are inserted between the existing roof materials that are stacked stepwise in the eaves ridge direction of each roof surface to form the pair of top cover pieces. A pair of end surface cover pieces connected downward from the opposite edges of the pieces covers the valley side end surface of the existing roof material, and a valley plate cover piece extending between the lower edges of the pair of end surface cover pieces is the existing valley plate. providing the valley cover along the surface,
In the step of installing the roofing material for repair, the roofing material for repair is installed by inserting the ridge-side insertion part between the existing roofing materials so that the valley side end of the covering part overlaps the upper surface cover piece. The construction method according to claim 6, characterized in that. 8. The construction method according to claim 7, wherein said valley cover installation step includes cutting a part of the eaves side end of said valley cover to provide said valley cover. The step of installing the roof material for repair is characterized in that the roof material for repair is installed by cutting the roof material for repair obliquely so that the valley side end portion of the covering portion overlaps the upper surface cover piece. , The construction method according to claim 7.

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