JP-2026075219-A - Waterproofing structure and construction method for waterproofing structure

JP2026075219AJP 2026075219 AJP2026075219 AJP 2026075219AJP-2026075219-A

Abstract

[Problem] To provide a waterproof structure and a construction method for a waterproof structure that offer excellent waterproofing and are easy to adjust during installation. [Solution] The waterproof structure 15 is constructed by combining a first member 20 and a second member 30 formed by bending steel plates. The first member 20 has a first lower roof surface covering portion that covers a part of the lower roof surface 3 located below the upper roof surface 6 of the ridge-type roof 1, a gable wall surface covering portion that covers a part of the gable wall surface 8 located between the lower roof surface 3 and the upper roof surface 6, and a gable underside covering portion that covers a part of the underside of the gable 7 of the upper roof surface 6. The second member 30 has a gable outer surface covering portion that covers a part of the outer surface of the gable 7 of the upper roof surface 6, and a second lower roof surface covering portion that covers a part of the lower roof surface 3 on the outer side of the gable 7. The first member 20 and the second member 30 are connected by the engagement of an engaging portion 25 provided on the first member 20 and an engaged portion 35 provided on the second member 30. [Selection Diagram] Figure 1

Inventors

神戸睦史

Assignees

株式会社ハウゼコ

Dates

Publication Date: 20260508
Application Date: 20241022

Claims (11)

A waterproof structure installed at the ridge-crossing point where the flat ridge and the gable of the upper roof surface meet, comprising a lower roof surface having a common roof surface extending diagonally upward from the eaves, with a flat ridge formed parallel to the eaves at the upper end of the common roof surface and the roof surface folding back downward, and an upper roof surface extending further upward from the upper end of the common roof surface, A first member having a first lower roof surface covering portion that covers a part of the lower roof surface located below the upper roof surface, a gable wall covering portion that covers a part of the gable wall surface located between the lower roof surface and the upper roof surface, and a gable underside covering portion that covers a part of the underside of the gable of the upper roof surface, A waterproof structure comprising a second member having a gable outer covering portion that covers a part of the outer surface of the gable of the upper roof surface, and a second lower roof surface covering portion that covers a part of the lower roof surface on the outer side of the gable.
The waterproof structure according to claim 1, wherein the first member has an engaging portion provided on the first lower roof surface covering, and the second member has an engaged portion provided on the gable outer surface covering, and the first member and the second member are connected by the engagement of the engaging portion and the engaged portion.
The waterproof structure according to claim 2, wherein the engaging portion is composed of a vertical portion extending vertically upward, connected to the end of the first lower roof surface covering portion on the side facing the gable wall surface, and the engaged portion is composed of a bent portion connected to the lower end of the lower roof surface in the flow direction of the gable outer surface covering portion, extending vertically upward and then folding back vertically downward, and the bent portion can be engaged by inserting it so as to cover the vertical portion.
The waterproof structure according to claim 2, wherein, in the engaged state, one end of each of the engaging portion and the engaged portion abuts against the gable underside covering portion.
The waterproof structure according to claim 3, wherein the engaging portion and the engaged portion extend downward in the direction of flow of the lower roof surface and are configured to be detachable.
The first member has a hanging portion extending downward from the end of the first lower roof surface covering portion that faces the gable lower surface covering portion, At the joint between the lower roof surface and the gable wall surface, a flashing element is further provided. The first member is installed so as to cover the rainproofing fitting. The waterproof structure according to claim 1.
The waterproof structure according to claim 6, wherein the hanging portion has a notch formed in a part of the gable wall covering portion for housing the flashing component.
The waterproof structure according to claim 1, wherein the second member is cut out so that a portion of the upper roof surface side of the gable outer covering portion is exposed, and the lower part of the common roof surface side end of the gable outer covering portion extends to protrude toward the common roof surface side, thereby forming a protruding portion.
The waterproof structure according to claim 1, wherein the second member has a second lower roof surface covering portion formed in a rectangular flat plate shape, and an extension portion is formed at the common roof surface side end of the second lower roof surface covering portion, which can be folded back toward the common roof surface side along the line of the flat ridge.
The waterproof structure according to claim 9, wherein the second member is provided with a water-repellent at the end of the second lower roof surface covering portion facing the outer gable covering portion.
A method for constructing a waterproof structure according to claim 1, A first member installation step involves installing the first member such that the joint between the lower roof surface located below the upper roof surface, the gable wall surface located between the lower roof surface and the upper roof surface, and the lower surface of the gable of the upper roof surface is covered by the first lower roof surface covering portion, by the gable wall surface covering portion, and by the gable lower surface covering portion, respectively, covering a portion of the lower roof surface with the first lower roof surface covering portion, The second member installation step involves installing the second member such that the joint between the outer surface of the gable of the upper roof surface and the lower roof surface is covered by the gable outer surface covering portion with a part of the outer surface of the gable and by the second lower roof surface covering portion with a part of the lower roof surface on the outer side of the gable, A method for constructing a waterproof structure, comprising a connection step of connecting the first member and the second member.

Description

This invention relates to a waterproof structure and a method for constructing a waterproof structure, and more particularly to a waterproof structure and a method for constructing a waterproof structure installed at the ridge-off section of a ridge-off roof. Traditionally, the ridge-end sections of a ridge-end roof have a complex structure at the joint, making them highly susceptible to leaks and thus requiring careful waterproofing. A waterproofing component for such ridge-end sections of a ridge-end roof, as shown in Patent Document 1, exists. Patent Document 1 discloses a waterproofing component applied to the ridge-off section of a ridge-off roof, where a smaller roof slopes in the opposite direction from the main roof from the middle of the main roof's slope. The waterproofing component is integrally formed by bending a metal plate and consists of a flashing plate along the upper surface of the main roof's gable, a gable cover plate with its side surface folded back along the main roof's gable from the upper ridge end of the flashing plate to the ridge line of the smaller roof, a flashing plate folded back from the lower edge of the flashing plate towards the smaller roof and extending along the upper surface of the smaller roof, a smaller roof-side ridge capping folded back along the other slope surface of the smaller roof with the line corresponding to the ridge line of the smaller roof at the upper ridge end of the flashing plate as the boundary, and a waterproofing plate that closes the space between the flashing plate and the side surface of the smaller roof-side ridge capping protruding from the surface of the flashing plate along the main roof's gable. Japanese Patent Application Publication No. 9-096069 This is a schematic perspective view showing the installation state of a waterproof structure according to the first embodiment of this invention.This is a perspective view of the waterproof structure shown in Figure 1, viewed from the planar side.This is a perspective view of the waterproof structure shown in Figure 1, viewed from the bottom side.Figure 1 shows a perspective view of the first member of the waterproof structure, where (1) is a view from the top and (2) is a view from the bottom.Figure 1 shows a perspective view of the second member of the waterproof structure, where (1) is a view from the top and (2) is a view from the bottom.Figure 1 is a schematic perspective view showing the installation process of the waterproof structure, where (1) is a diagram showing the installation process of the first member of the waterproof structure shown in Figure 4, which is attached to the ridge-side section of the ridge-side roof, and (2) is a schematic perspective view showing the connection process of connecting the second member shown in Figure 5 to the first member.Figure 1 is a schematic perspective view showing the installation process of the waterproof structure, where (1) is a diagram showing the processing of the extension portion of the second member, and (2) is a diagram showing the state after the installation of the waterproof structure is completed. Figure 1 is a schematic perspective view showing the installation state of a waterproof structure according to the first embodiment of this invention. Referring to Figure 1, the waterproof structure 15 is installed at the ridge-cross section 10 where the flat ridge 4 and the gable 7 of the upper roof surface 6 of a ridge-cross roof 1 meet. The ridge 1 has a common roof surface 2 extending diagonally upward from the eaves of a house (not shown), a lower roof surface 3 formed parallel to the eaves at the upper end of the common roof surface 2 where the roof surface folds back downward, and an upper roof surface 6 extending further upward from the upper end of the common roof surface 2. Figure 2 is a perspective view of the waterproof structure shown in Figure 1, viewed from the plan side. Figure 3 is a perspective view of the waterproof structure shown in Figure 1, viewed from the bottom side. Figure 4 is a perspective view of the first member of the waterproof structure shown in Figure 1, where (1) is a view from the plan side and (2) is a view from the bottom side. Furthermore, Figure 5 is a perspective view of the second member of the waterproof structure shown in Figure 1, where (1) is a view from the plan side and (2) is a view from the bottom side. Referring to Figures 1, 2, and 5, the waterproof structure 15 is constructed by combining a first member 20 and a second member 30 formed by bending steel plates. The first member 20 has a rectangular flat plate-shaped first lower roof surface covering portion 21 that covers a part of the lower roof surface 3 located below the upper roof surface 6 of the ridge-type roof 1, a trapezoidal flat plate-shaped gable wall covering portion 22 that is connected to the gable wall surface 8 side end of the first lower roof surface covering portion 21 and extends upward, covering a part of the gable