Water cut-off member, building, and construction method of outer wall

Abstract

To provide a water cut-off member, a building, and a construction method of outer wall capable of improving workability of an outer wall.SOLUTION: A water cut-off member 30 cuts off water around a protrusion part provided at a skeleton of an outer wall so as to protrude from an outer wall panel. The water cut-off member 30 is arranged between a substrate material of the outer wall and the outer wall panel so as to surround the protrusion part at least partially, and comes into contact with the substrate material and the outer wall panel.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a water-stopping member, a building, and an exterior wall construction method. [Background technology]

[0002] There is known technology for attaching eaves or the like to the exterior wall of a building (for example, Patent Document 1). In the technology described in Patent Document 1, a protrusion (called an arm in the document) is provided on the framework of the building in order to attach the eaves or the like. The protrusion is configured to protrude from the exterior wall panel. A sealant is filled between the exterior wall panel and the protrusion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-336715 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the sealing work between the exterior wall panel and the protruding part around the protruding part is time-consuming. Also, the sealing finish may vary depending on the skill of the installer. It is preferable to improve the workability of the exterior wall around the protruding part. [Means for solving the problem]

[0005] (1) A water-stopping member that solves the above problem is a water-stopping member that waterproofs the periphery of a protrusion that is provided on the exterior wall body so as to protrude from an exterior wall panel, and is arranged between the exterior wall base material and the exterior wall panel so as to at least partially surround the protrusion, and is configured to be in contact with the base material and the exterior wall panel.

[0006] According to this configuration, even if water penetrates into the inside of the exterior wall panel from between the exterior wall panel and the protruding portion, the water-stopping member prevents the water from diffusing around the protruding portion. Also, since the water-stopping member is disposed between the base material and the exterior wall panel, the workability of the exterior wall with respect to waterproofing around the protruding portion can be improved.

[0007] (2) The water-stopping member described in (1) above has a first water-stopping portion that at least partially surrounds the protrusion, and the first water-stopping portion has an opening that is positioned below the protrusion when the water-stopping member is positioned between the base material and the exterior wall panel.

[0008] With this configuration, water that has entered the inside of the exterior wall panel through the gap between the exterior wall panel and the protrusion can be drained downward through the opening.

[0009] (3) The water-stopping member described in (2) above further includes a bottom surface portion provided on the first water-stopping portion and in contact with the base material, an insertion portion provided on the bottom surface portion so that the protrusion portion can be inserted therethrough, and a second water-stopping portion provided on the bottom surface portion so as to extend along the insertion portion and in contact with the protrusion portion.

[0010] According to this configuration, since the bottom surface portion comes into contact with the base material, the periphery of the protruding portion on the base material can be prevented from coming into contact with water. Also, the second water blocking portion can prevent water from entering through the insertion portion.

[0011] (4) In the waterproofing member described in (2) above, the first waterproofing portion has a first contact surface that contacts the base material and a second contact surface that contacts the exterior wall panel.

[0012] According to this configuration, the first water-stopping portion can be in suitable contact with the base material and the exterior wall panel, so that the water-stopping member can be simplified in configuration while maintaining waterproofness around the protruding portion.

[0013] (5) The waterproofing member according to any one of (1) to (4) above, which is made of an elastic member.

[0014] According to this configuration, when the water-stopping member is disposed between the base material and the exterior wall panel, the water-stopping member easily adheres to the base material and the exterior wall panel. Therefore, even if water seeps into the inside of the exterior wall panel from between the exterior wall panel and the protruding portion, the water-stopping member more effectively prevents the water from diffusing around the protruding portion.

[0015] (6) A building that solves the above problem is a building that has an exterior wall, the exterior wall is provided with the protrusion, and the water-stopping member described in any one of (1) to (5) above is provided between the base material and the exterior wall panel in the exterior wall.

[0016] According to this configuration, by disposing the water-stopping member, a waterproof structure that makes it difficult for water to diffuse around the protruding portion between the base material and the exterior wall panel can be formed. Since the water-stopping member is disposed between the base material and the exterior wall panel, the workability of the exterior wall around the protruding portion can be improved compared to the case where a sealant is applied between the exterior wall panel and the protruding portion.

[0017] (7) In the building described in (6) above, the exterior wall panel includes a first exterior wall panel and a second exterior wall panel arranged in line with the first exterior wall panel, the first exterior wall panel is arranged so that the width from a first edge face of the first exterior wall panel to a second edge face of the second exterior wall panel in the horizontal direction is constant in the vertical direction, and the protrusion protrudes from the exterior wall panel by being inserted between the first edge face and the second edge face.

[0018] According to this configuration, it is not necessary to provide a notch on the edge of the exterior wall panel in order to provide the protrusion on the exterior wall, which improves the ease of construction of the exterior wall around the protrusion of the building.

[0019] (8) In the building described in (7) above, a sealing portion is provided at the base of the protruding portion protruding from the exterior wall panel, and the protruding portion has a first side surface facing the first exterior wall panel in the horizontal direction and a second side surface facing the second exterior wall panel in the horizontal direction, and the sealing portion is provided so as to contact the first side surface and a first exterior surface of the first exterior wall panel, and to contact the second side surface and a second exterior surface of the second exterior wall panel.

[0020] According to this configuration, the base of the protrusion is concealed by the sealing portion, thereby improving the design of the exterior wall.

[0021] (9) A construction method for an exterior wall that solves the above-mentioned problems is a construction method for an exterior wall in which a protrusion is provided to protrude from an exterior wall panel, and includes a first step of attaching a waterproof sheet to the periphery of the protrusion on the base material of the exterior wall, a second step of placing a water-stopping member on the protrusion, and a third step of attaching the exterior wall panel to the base material so that the water-stopping member contacts the base material and the exterior wall panel.

[0022] According to this configuration, by arranging the water-stopping member on the protrusion, a waterproof structure can be formed around the protrusion in the exterior wall, thereby improving the workability of the exterior wall in terms of waterproofing around the protrusion. Effect of the Invention

[0023] According to the water-stopping member, building, and exterior wall construction method disclosed herein, the workability of the exterior wall can be improved. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a diagram showing a building according to a first embodiment. [Diagram 2] FIG. 1 is a diagram showing a portion of an exterior wall of a building. [Diagram 3] 3 is a cross-sectional view of the outer wall taken along line 3-3 in FIG. 2. [Figure 4] 4 is a cross-sectional view of the outer wall taken along line 4-4 in FIG. 2. [Diagram 5] FIG. 1 is a perspective view of a water-stopping member according to a first embodiment. [Figure 6] FIG. 2 is a diagram showing the first step of the exterior wall construction method. [Figure 7] A diagram showing the second step of the exterior wall construction method. [Figure 8] A diagram showing the third step of the exterior wall construction method. [Figure 9] FIG. 11 is a perspective view of a water-stopping member according to a second embodiment. [Figure 10] FIG. 13 is a perspective view of the periphery of the protrusion with the exterior wall panel omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] First Embodiment The construction method of the water-stopping member 30, the building 10, and the exterior wall 11 according to this embodiment will be described with reference to Figs.

[0026] <Buildings> 1 and 2, the building 10 of this embodiment is a detached house. The building 10 may be a residential facility such as an apartment building, a lodging facility, a medical facility, or a nursing home.

[0027] The building 10 has an exterior wall 11. The exterior wall 11 includes an exterior wall of the building body, a rising wall constituting a balcony or veranda, a wall surrounding the rooftop, and a wall surrounding the loggia. The building 10 of this embodiment has a balcony 11A.

[0028] An exterior wall attachment 12 is attached to the exterior wall 11 of the balcony 11A. The exterior wall attachment 12 refers to an object that is attached to the exterior wall 11. Examples of the exterior wall attachment 12 include a louver, an antenna support, a support member for an electric wire, a support for an electric light, and a fixing part for fixing an ornament that decorates the exterior wall 11. In the example of FIG. 1, the exterior wall attachment 12 is a louver 12A. In FIG. 1, the louver 12A is provided on the exterior wall 11. In the example of FIG. 1, the louver 12A is disposed on the exterior wall 11 of the balcony 11A.

[0029] Fig. 2 shows an exterior wall 11 on which an exterior wall attachment 12 is disposed. Note that a sealing portion 24, which will be described later, is omitted in Fig. 2. The exterior wall 11 has a structure 13, a base material 14 that covers the structure 13, and an exterior wall panel 15 that is disposed on the outside of the base material 14. The structure 13 is composed of columns and beams. The base material 14 is attached to the structure 13.

[0030] The exterior wall panel 15 is attached to the base material 14 via furring strips and to the frame 13. The exterior wall panel 15 is, for example, a plate-shaped concrete panel. Plate materials other than concrete, such as synthetic resin molded products and metal panels, may also be used as the exterior wall panel 15. A gap G (see FIG. 3) is provided between the base material 14 and the exterior wall panel 15 for ventilation or drainage.

[0031] The exterior wall panel 15 includes a first exterior wall panel 16 and a second exterior wall panel 17. The second exterior wall panel 17 is arranged to be aligned with the first exterior wall panel 16. The second exterior wall panel 17 is aligned with the first exterior wall panel 16 in the horizontal direction. The first exterior wall panel 16 is arranged so that the width X1 from the first edge surface 16A of the first exterior wall panel 16 to the second edge surface 17A of the second exterior wall panel 17 in the horizontal direction is constant in the up-down direction.

[0032] A protrusion 21 is provided on the exterior wall 11. The protrusion 21 is provided on the exterior wall 11 in order to attach the exterior wall attachment 12 to the exterior wall 11. In this embodiment, a louver 12A as the exterior wall attachment 12 has a frame portion 12F attached to the exterior wall 11 and a vertical lattice portion 12B attached to the frame portion 12F. The frame portion 12F is fixed to the exterior wall 11. Specifically, the frame portion 12F is fixed to the exterior wall 11 by being fixed to a hole provided in the protrusion 21 with a bolt or the like.

[0033] 3, the protrusion 21 is provided on the body 13 of the exterior wall 11 so as to protrude from the exterior wall panel 15. The protrusion 21 has a first side surface 21A facing toward the first exterior wall panel 16 in the horizontal direction, and a second side surface 21B facing toward the second exterior wall panel 17 in the horizontal direction.

[0034] The protrusion 21 protrudes from the exterior wall panel 15 by being inserted between a first edge surface 16A of the first exterior wall panel 16 and a second edge surface 17A of the second exterior wall panel 17. The first edge surface 16A of the first exterior wall panel 16 faces a first side surface 21A of the protrusion 21. The second edge surface 17A of the second exterior wall panel 17 faces a second side surface 21B of the protrusion 21. No notches are provided in the portions of the first edge surface 16A and the second edge surface 17A that face the protrusion 21.

[0035] The protrusion 21 is configured, for example, as a part of a metal fitting 20 used to attach the exterior wall attachment 12 to the exterior wall 11. The metal fitting 20 will be described below. 1 and 3, the metal fitting 20 has a protruding portion 21 and a connecting portion 22. The protruding portion 21 extends perpendicular to the connecting portion 22. The connecting portion 22 is connected to the body 13.

[0036] The connection portion 22 is formed in a plate shape. The connection portion 22 of the metal fitting 20 is fixed to the skeleton 13 of the exterior wall 11, thereby connecting the protrusion 21 of the metal fitting 20 to the skeleton 13. The connection portion 22 is fixed to the skeleton 13 by fasteners such as bolts, nails, screws, etc. The connection portion 22 may be fixed to the skeleton 13 via a base material 14.

[0037] The protruding portion 21 is formed of, for example, a metal plate. The protruding portion 21 is welded to the connecting portion 22. The shape of the tip of the protruding portion 21 may be appropriately changed depending on the method of mounting the external wall attachment 12.

[0038] The protrusion 21 protrudes outward from between two adjacent exterior wall panels 15. The thickness X2 of the protrusion 21 is set to be smaller than the width of the gap between the two adjacent exterior wall panels 15. Specifically, the thickness X2 of the protrusion 21 is smaller than the width X1 from the first edge surface 16A of the first exterior wall panel 16 to the second edge surface 17A of the second exterior wall panel 17. An example of the width X1 is 10 mm. An example of the thickness X2 of the protrusion 21 is 4 mm or more and 9 mm or less.

[0039] The base material 14 around the protruding portion 21 will be described. 3 and 4, an opening 14A for arranging the connection portion 22 of the metal fitting 20 is provided in the base material 14 where the base material 14 overlaps with a column or beam as the main body 13 and where the connection portion 22 of the metal fitting 20 is to be arranged. The connection portion 22 of the metal fitting 20 is fitted into the opening 14A of the base material 14. The opening 14A of the base material 14 is configured to match the shape of the connection portion 22 of the metal fitting 20. Preferably, the thickness of the connection portion 22 of the metal fitting 20 and the thickness of the base material 14 are equal. The metal fitting 20 may be attached directly to the base material 14 of the exterior wall 11.

[0040] A waterproof sheet 23 is provided on the base material 14. The waterproof sheet 23 is attached to the outer surface of the base material 14. A waterproof tape 23A is attached to the base material 14 so as to cover the boundary between the connection portion 22 of the metal fitting 20 and the base material 14 (see FIG. 6). The waterproof sheet 23 is then attached so as to cover the connection portion 22 of the metal fitting 20 and the base material 14, overlapping the entire waterproof tape 23A.

[0041] 3, a sealing portion 24 is provided at a root portion 21R of the protruding portion 21 protruding from the exterior wall panel 15. The sealing portion 24 covers the area between the protruding portion 21 and the first edge end surface 16A of the first exterior wall panel 16 and the second edge end surface 17A of the second exterior wall panel 17 from the outside of the exterior wall 11. The sealing portion 24 is provided at the root portion 21R of the protruding portion 21 in the extension direction D. The sealing portion 24 is formed by a sealing material 25.

[0042] The sealing portion 24 is provided so as to contact the first side surface 21A of the protrusion 21 and the first outer surface 16B of the first outer wall panel 16. The sealing portion 24 is provided so as to contact the second side surface 21B of the protrusion 21 and the second outer surface 17B of the second outer wall panel 17. An example of the sealing portion 24 is a triangular sealing.

[0043] As shown in Fig. 2, a sealant 25 is filled in the portion between the first edge surface 16A and the second edge surface 17A that does not face the protruding portion 21 in the horizontal direction. The sealing portion 24 and the sealant 25 seal the first exterior wall panel 16 and the second exterior wall panel 17 of the exterior wall 11. Note that the sealant 25 is omitted in Fig. 4.

[0044] <Water-stopping materials> 3 to 5, in the exterior wall 11, a waterproof member 30 is provided between the base material 14 and the exterior wall panel 15. The waterproof member 30 is disposed between the base material 14 and the exterior wall panel 15.

[0045] The waterproofing member 30 is made of an elastic material. The elastic material is, for example, a resin material having elasticity. The waterproofing member 30 of the present embodiment is made of, for example, a rubber material.

[0046] The water-stopping member 30 waterproofs the periphery of the protrusion 21. The water-stopping member 30 waterproofs the portion of the periphery of the protrusion 21 that is located between the base material 14 and the exterior wall panel 15. The water-stopping member 30 is disposed between the base material 14 of the exterior wall 11 and the exterior wall panel 15 so as to at least partially surround the protrusion 21.

[0047] The water-stopping member 30 is configured to be in contact with the base material 14 and the exterior wall panel 15. The water-stopping member 30 is in contact with the outer surface of the base material 14 via the waterproof sheet 23. The water-stopping member 30 is in contact with the inner surface of the exterior wall panel 15.

[0048] The water-stopping member 30 has a first water-stopping portion 31. The first water-stopping portion 31 at least partially surrounds the protruding portion 21. In this embodiment, the first water-stopping portion 31 surrounds the entire protruding portion 21 between the base material 14 and the exterior wall panel 15. The first water-stopping portion 31 is configured to suppress water from diffusing around the protruding portion 21 between the base material 14 and the exterior wall panel 15.

[0049] The first waterproof portion 31 has a first wall portion 31A extending in the extension direction D in which the protruding portion 21 extends, and a second wall portion 31B extending in the extension direction D. The first wall portion 31A surrounds the protruding portion 21 between the base material 14 and the exterior wall panel 15. The first wall portion 31A is configured in a rectangular cylindrical shape.

[0050] The second wall portion 31B is provided at an end of the first wall portion 31A located on the exterior wall panel 15 side in the extension direction D. The second wall portion 31B contacts the exterior wall panel 15. The second wall portion 31B is configured in a rectangular tube shape that widens from the base material 14 side toward the exterior wall panel 15 side in the extension direction D.

[0051] Preferably, in a state in which the water-stopping member 30 is disposed between the base material 14 of the exterior wall 11 and the exterior wall panel 15 (hereinafter referred to as the "disposed state"), the water-stopping member 30 deforms so as to come into close contact with the exterior wall panel 15. For example, in the disposed state, the water-stopping member 30 deforms so as to widen the opening of the second wall portion 31B located on the exterior wall panel 15 side by pressing the second wall portion 31B by the exterior wall panel 15.

[0052] An opening 32 is provided in the first water stopper 31. In the arranged state, the opening 32 is located below the protruding portion 21. The opening 32 is provided in the first wall portion 31A so as to penetrate in the up-down direction in the arranged state. In this embodiment, two openings 32 are provided in the first wall portion 31A. The number and shape of the openings 32 are appropriately set depending on the size of the first wall portion 31A, the size of the protruding portion 21, etc.

[0053] The water-stopping member 30 of this embodiment further has a bottom surface portion 33, an insertion portion 34, and a second water-stopping portion 35. The bottom surface portion 33 is provided in the first water-stopping portion 31. The bottom surface portion 33 is provided at the end portion of the first wall portion 31A located on the base material 14 side in the extension direction D. The bottom surface portion 33 is such that the first wall portion 31A forms the bottom surface of the rectangular tube. The bottom surface portion 33 contacts the base material 14. Specifically, the bottom surface portion 33 contacts the waterproof sheet 23 and also contacts the base material 14 via the waterproof sheet 23.

[0054] The insertion portion 34 is provided on the bottom surface portion 33 so that the protrusion 21 can be inserted therethrough. The insertion portion 34 is, for example, a hole penetrating the bottom surface portion 33.

[0055] The second water-stopping portion 35 is provided on the bottom surface portion 33 so as to follow the insertion portion 34. The second water-stopping portion 35 surrounds the periphery of the hole of the insertion portion 34. The second water-stopping portion 35 prevents water from flowing through the insertion portion 34 toward the base material 14 side. The second water-stopping portion 35 has a third wall portion 35A extending in the extension direction D. The third wall portion 35A is configured in a rectangular tube shape that narrows from the base material 14 side toward the exterior wall panel 15 side in the extension direction D. In the extension direction D, the end of the third wall portion 35A located on the base material 14 side is connected to the bottom surface portion 33.

[0056] The second water-stopping portion 35 contacts the protruding portion 21. In the extension direction D, the end of the third wall portion 35A located on the exterior wall panel 15 side contacts the protruding portion 21. In the extension direction D, the end of the third wall portion 35A located on the exterior wall panel 15 side forms an insertion hole 35B through which the protruding portion 21 is inserted. Before the water-stopping member 30 is arranged between the base material 14 of the exterior wall 11 and the exterior wall panel 15, the size of the insertion hole 35B may be configured to be slightly smaller than the size of the protruding portion 21. By configuring in this manner, in the arranged state, the end of the third wall portion 35A located on the exterior wall panel 15 side can contact the protruding portion 21 without any gap.

[0057] <Exterior wall construction method> 6 to 8, a construction method for the exterior wall 11 will be described. The construction method is a construction method for the exterior wall 11 provided with the protruding portion 21. The construction method for the exterior wall 11 includes a first step, a second step, and a third step.

[0058] Before the first step, a protrusion 21 is provided on the skeleton 13 of the exterior wall 11. Specifically, the protrusion 21 is provided by fixing the metal fitting 20 to the skeleton 13. Furthermore, a base material 14 is attached to the skeleton 13 so as to cover the skeleton 13. Furthermore, a waterproof tape 23A is attached so as to cover the boundary portion between the connection portion 22 of the metal fitting 20 and the base material 14.

[0059] Next, as shown in Fig. 6, in the first step, a waterproof sheet 23 is attached to the periphery of the protruding portion 21 of the base material 14 of the exterior wall 11. Note that the waterproof sheet 23 is partially omitted in the example of Fig. 6. In this step, the waterproof sheet 23 may be attached to the entire surface of the base material 14.

[0060] 7, in the second step, the water-stopping member 30 is placed on the protruding portion 21. In this step, the water-stopping member 30 is attached to the waterproof sheet 23 with an adhesive member (not shown) such as an adhesive tape in a state in which the protruding portion 21 is inserted through the insertion portion 34 of the water-stopping member 30.

[0061] 8, in the third step, the exterior wall panel 15 is attached to the base material 14 so that the water-stopping member 30 contacts the base material 14 and the exterior wall panel 15. Specifically, the exterior wall panel 15 is attached to the base material 14 via furring strips.

[0062] The construction method further includes a fourth step. In the fourth step, a sealant 25 is filled between the first edge surface 16A of the first exterior wall panel 16 and the second edge surface 17A of the second exterior wall panel 17. After the sealant 25 is filled between the first edge surface 16A and the second edge surface 17A, a sealing portion 24 is formed by the sealant 25 at the base portion 21R of the protruding portion 21 so as to follow the protruding portion 21.

[0063] <Operation of the embodiment> A first effect of this embodiment will be described. In the exterior wall 11, since the water-stopping member 30 is disposed between the base material 14 and the exterior wall panel 15, even if water seeps in between the exterior wall panel 15 and the protruding portion 21, the water-stopping member 30 makes it difficult for the water to spread between the base material 14 and the exterior wall panel 15. Even without performing sealing between the exterior wall panel 15 and the protruding portion 21, the periphery of the protruding portion 21 can be waterproofed, so the effort required for sealing around the periphery of the protruding portion 21 can be reduced.

[0064] A second effect of this embodiment will be described. By placing the water-stopping member 30, a waterproof structure can be formed around the protrusion 21 between the base material 14 and the exterior wall panel 15, so that the finish around the protrusion 21 can be made uniform regardless of the skill of the installer.

[0065] A third function of this embodiment will be described. Conventionally, sealing was performed between the exterior wall panel 15 and the protruding portion 21. Depending on the width X1 from the first edge surface 16A to the second edge surface 17A and the thickness X2 of the protruding portion 21, it was necessary to form a notch in the first edge surface 16A and the second edge surface 17A in the portion aligned with the protruding portion 21 in the horizontal direction for sealing. In the building 10 of this embodiment, the use of the water-stopping member 30 makes it possible to waterproof the periphery of the protruding portion 21, so there is no need to perform sealing between the exterior wall panel 15 and the protruding portion 21. Since there is no need to provide a notch in the exterior wall panel 15 for sealing, the efficiency of the construction around the protruding portion 21 is improved.

[0066] <Effects of the embodiment> The effects of this embodiment will be described. (1-1) The water-stopping member 30 waterproofs the periphery of the protruding portion 21. The water-stopping member 30 is disposed between the base material 14 and the exterior wall panel 15 of the exterior wall 11 so as to at least partially surround the protruding portion 21. The water-stopping member 30 is configured to be in contact with the base material 14 and the exterior wall panel 15.

[0067] According to this configuration, even if water seeps into the inside of the exterior wall panel 15 from between the exterior wall panel 15 and the protruding portion 21, the water-stopping member 30 prevents the water from diffusing around the protruding portion 21. In addition, since the water-stopping member 30 is disposed between the base material 14 and the exterior wall panel 15, the workability of the exterior wall 11 with respect to waterproofing around the protruding portion 21 can be improved.

[0068] (1-2) The waterproof member 30 has a first waterproof portion 31. The first waterproof portion 31 is provided with an opening 32 that is located below the protruding portion 21 in the deployed state.

[0069] According to this configuration, water that has entered the inside of the exterior wall panel 15 between the exterior wall panel 15 and the protruding portion 21 can be drained downward through the opening 32.

[0070] (1-3) The water-stopping member 30 further has a bottom surface portion 33, an insertion portion 34, and a second water-stopping portion 35. The bottom surface portion 33 contacts the base material 14. The insertion portion 34 is provided on the bottom surface portion 33 so that the protruding portion 21 can be inserted therethrough. The second water-stopping portion 35 is provided on the bottom surface portion 33 so as to fit along the insertion portion 34, and contacts the protruding portion 21.

[0071] According to this configuration, the bottom surface portion 33 contacts the base material 14, so that the periphery of the protruding portion 21 in the base material 14 can be prevented from coming into contact with water. In addition, the second water-stopping portion 35 can prevent water from entering through the insertion portion 34.

[0072] (1-4) The waterproof member 30 is made of an elastic member.

[0073] According to this configuration, in the arranged state, the base member is likely to adhere closely to the base material 14 and the exterior wall panel 15. Therefore, even if water seeps into the inside of the exterior wall panel 15 from between the exterior wall panel 15 and the protruding portion 21, the water-stopping member 30 more suitably prevents the water from diffusing around the protruding portion 21.

[0074] (1-5) The building 10 includes an exterior wall 11. The exterior wall 11 is provided with a protruding portion 21. In the exterior wall 11, a waterproof member 30 is provided between a base material 14 and an exterior wall panel 15.

[0075] According to this configuration, by disposing the water-stopping member 30, it is possible to configure a waterproof structure in which water is less likely to diffuse around the protrusion 21 between the base material 14 and the exterior wall panel 15. Since the water-stopping member 30 is disposed between the base material 14 and the exterior wall panel 15, it is possible to improve the workability of the exterior wall 11 around the protrusion 21 compared to the case where a sealing is applied between the exterior wall panel 15 and the protrusion 21.

[0076] (1-6) The exterior wall panel 15 includes a first exterior wall panel 16 and a second exterior wall panel 17. The first exterior wall panel 16 is arranged so that the width X1 from the first edge surface 16A of the first exterior wall panel 16 to the second edge surface 17A of the second exterior wall panel 17 in the horizontal direction is constant in the vertical direction. The protruding portion 21 protrudes from the exterior wall panel 15 by being inserted between the first edge surface 16A and the second edge surface 17A.

[0077] According to this configuration, there is no need to provide a notch on the edge of the exterior wall panel 15 in order to provide the protruding portion 21 on the exterior wall 11. Therefore, in the building 10, the workability of the exterior wall 11 around the protruding portion 21 can be further improved.

[0078] (1-7) A sealing portion 24 is provided at a base portion 21R of the protruding portion 21 that protrudes from the exterior wall panel 15. The protruding portion 21 has a first side surface 21A and a second side surface 21B. The sealing portion 24 is provided so as to contact the first side surface 21A and the first outer surface 16B of the first exterior wall panel 16, and to contact the second side surface 21B and the second outer surface 17B of the second exterior wall panel 17.

[0079] According to this configuration, the base portion 21R of the protrusion 21 is concealed by the sealing portion 24, thereby improving the design of the exterior wall 11.

[0080] (1-8) The construction method is a construction method for an exterior wall 11 having a protrusion 21. The construction method for the exterior wall 11 includes a first step, a second step, and a third step. In the first step, a waterproof sheet 23 is attached to the periphery of the protrusion 21 of the base material 14 of the exterior wall 11. In the second step, a water-stopping member 30 is placed on the protrusion 21. In the third step, the exterior wall panel 15 is attached to the base material 14 so that the water-stopping member 30 contacts the base material 14 and the exterior wall panel 15.

[0081] According to this configuration, by arranging the water-stopping member 30 at the protrusion 21, a waterproof structure can be formed around the protrusion 21 in the exterior wall 11, thereby improving the workability of the exterior wall 11 in terms of waterproofing around the protrusion 21.

[0082] <Second embodiment> A construction method for a water-stopping member 30, a building 10, and an exterior wall 11 according to the second embodiment will be described with reference to Figures 3, 9, and 10. Note that in this embodiment, configurations that are substantially unchanged from those in the first embodiment are given the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted.

[0083] In this embodiment, the configuration of the waterproofing member 30 is different from that of the first embodiment. In this modification, the first waterproofing part 31 surrounds the protruding part 21 between the base material 14 and the exterior wall panel 15, except for a part below the protruding part 21.

[0084] In this embodiment, the first water-stopping portion 31 has a first contact surface 41 that contacts the base material 14 and a second contact surface 42 that contacts the exterior wall panel 15. Specifically, the first contact surface 41 contacts the waterproof sheet 23, and also contacts the base material 14 via the waterproof sheet 23. The first contact surface 41 and the second contact surface 42 are configured to extend perpendicular to the extension direction D in the arranged state. The water-stopping member 30 of this embodiment is arranged between the base material 14 and the exterior wall panel 15 so as not to contact the protruding portion 21.

[0085] The shape of the second contact surface 42 is, for example, the same as the shape of the first contact surface 41. In the example of Fig. 9, the outer edges of the first contact surface 41 and the second contact surface 42 are configured to be rectangular, but as long as the protrusion 21 can be surrounded between the base material 14 and the exterior wall panel 15, the shapes of the outer edges of the first contact surface 41 and the second contact surface 42 are not limited.

[0086] In the arranged state, a first contact surface 41 is formed at an end of the first wall portion 31A located on the base material 14 side in the extension direction D. Also, in the arranged state, a second contact surface 42 is formed at an end of the first wall portion 31A located on the exterior wall panel 15 side in the extension direction D. The first water-stopping portion 31 has a connection surface 43 that connects to the first contact surface 41 and the second contact surface 42. In the arranged state, the connection surface 43 extends parallel to the extension direction D.

[0087] The first wall portion 31A of the present embodiment is configured so that a cross section in a plane perpendicular to the extension direction D has the same shape as the first contact surface 41 and the second contact surface 42. The opening portion 32 of the present embodiment is configured as a notch in the first wall portion 31A.

[0088] The water-stopping member 30 of this embodiment is made of, for example, a waterproof sponge or a waterproof rubber. The water-stopping member 30 is processed, for example, by a punching process. For example, when the water-stopping member 30 is in an arranged state, the second contact surface 42 is pressed by the exterior wall panel 15, so that the first wall portion 31A is deformed in the extension direction D to be shortened.

[0089] <Operation of the embodiment> A first effect of this embodiment will be described. Since the first contact surface 41 can contact the base material 14 and the second contact surface 42 can contact the exterior wall panel 15, the first water-stopping portion 31 is arranged without any gaps in the extension direction D from the base material 14 to the exterior wall panel 15.

[0090] A second effect of this embodiment will be described. By configuring the water-stopping member 30 as in this embodiment, the water-stopping member 30 can be processed by punching, so that the manufacturing cost of the water-stopping member 30 can be reduced.

[0091] <Effects of the embodiment> The effects of this embodiment will be described. The first waterproofing portion 31 has a first contact surface 41 that contacts the base material 14 and a second contact surface 42 that contacts the exterior wall panel 15.

[0092] According to this configuration, the first waterproofing portion 31 can be in suitable contact with the base material 14 and the exterior wall panel 15, so that the waterproofing properties around the protruding portion 21 can be maintained and the configuration of the waterproofing member 30 can be simplified.

[0093] <Modification> The above-mentioned embodiments are examples of possible forms of the construction method of the water-stopping member 30, the building 10, and the exterior wall 11, and are not intended to limit the forms. The construction method of the water-stopping member 30, the building 10, and the exterior wall 11 may take forms different from those exemplified in the above-mentioned embodiments. Examples of such forms include forms in which part of the configuration of each embodiment is replaced, changed, or omitted, or forms in which a new configuration is added to the embodiment. Modified examples of the embodiments are shown below.

[0094] The protrusion 21 may be disposed so as to protrude from an opening formed in the exterior wall panel 15, instead of between the first edge surface 16A and the second edge surface 17A. This modification also reduces the effort required for sealing around the protrusion 21 protruding from the opening, improving the workability of the exterior wall 11 in terms of waterproofing around the protrusion 21.

[0095] The sealing portion 24 may be omitted in the exterior wall 11. In this modification, instead of the sealing portion 24, the space between the protruding portion 21 and the exterior wall panel 15 may be covered from the outside of the exterior wall 11 by a waterproof packing.

[0096] In each embodiment, an example has been shown in which the first water-stopping portion 31 is configured in a rectangular tubular shape, but the first water-stopping portion 31 may be configured in a rectangular tubular shape other than a rectangular shape, or may be configured in a cylindrical shape.

[0097] The water-stopping member 30 may be made of a material different from the elastic member. In this modified example, the water-stopping member 30 may be made of a hard plastic material. In the water-stopping member 30 of this modified example, a water-tight material may be provided in the portion that comes into contact with the exterior wall panel 15 and the base material 14. An example of the water-tight material is EPT SEALER (registered trademark). The water-tight material allows the water-stopping member 30 of this modified example to adhere closely to the exterior wall panel 15 and the base material 14.

[0098] In the first embodiment, the second wall portion 31B may be omitted as long as the first water-stopping portion 31 can contact the inside of the exterior wall panel 15. For example, instead of the second wall portion 31B, a watertight material may be attached to the end portion of the first wall portion 31A located on the exterior wall panel 15 side in the extension direction D.

[0099] In the first embodiment, the second waterproofing portion 35 may be omitted. In this modification, the edge of the hole of the insertion portion 34 may be configured to come into contact with the protrusion 21.

[0100] In the second embodiment, the opening 32 may be configured as a hole penetrating the first wall portion 31A. In the water-stopping member 30 of this modification, the first water-stopping portion 31 is processed by punching a sponge, and then a hole for the opening 32 is opened in the cylindrical first wall portion 31A.

[0101] The present specification discloses the following techniques: [Appendix 1] A water-stopping member that waterproofs the periphery of a protrusion provided on the exterior wall body so as to protrude from an exterior wall panel, the water-stopping member being arranged between the exterior wall's base material and the exterior wall panel so as to at least partially surround the protrusion, and being configured to be in contact with the base material and the exterior wall panel.

[0102] [Appendix 2] A water-stopping member as described in Appendix 1, which has a first water-stopping portion that at least partially surrounds the protrusion, and the first water-stopping portion has an opening that is positioned below the protrusion when the water-stopping member is positioned between the base material and the exterior wall panel.

[0103] [Appendix 3] The water-stopping member described in Appendix 2, further comprising a bottom surface portion provided on the first water-stopping portion and in contact with the base material, an insertion portion provided on the bottom surface portion so that the protrusion portion can be inserted therethrough, and a second water-stopping portion provided on the bottom surface portion so as to extend along the insertion portion and in contact with the protrusion portion.

[0104] [Appendix 4] The water-stopping member described in Appendix 2, wherein the first water-stopping portion has a first contact surface that contacts the base material and a second contact surface that contacts the exterior wall panel.

[0105] [Appendix 5] 2. A waterproof member as described in claim 1, which is made of an elastic member.

[0106] [Appendix 6] A building having an exterior wall, wherein the exterior wall is provided with the protrusion, and the water-stopping member described in any one of Appendices 1 to 5 is provided between the base material and the exterior wall panel in the exterior wall.

[0107] [Appendix 7] The building described in Appendix 6, wherein the exterior wall panel includes a first exterior wall panel and a second exterior wall panel arranged to be aligned with the first exterior wall panel, the first exterior wall panel is arranged so that a width from a first edge face of the first exterior wall panel to a second edge face of the second exterior wall panel in the horizontal direction is constant in the vertical direction, and the protruding portion protrudes from the exterior wall panel by being inserted between the first edge face and the second edge face.

[0108] [Appendix 8] The building described in Appendix 7, wherein a sealing portion is provided at a base portion of the protruding portion protruding from the exterior wall panel, the protruding portion has a first side surface facing the first exterior wall panel in the horizontal direction and a second side surface facing the second exterior wall panel in the horizontal direction, and the sealing portion is provided so as to contact the first side surface and a first outer surface of the first exterior wall panel, and to contact the second side surface and a second outer surface of the second exterior wall panel.

[0109] [Appendix 9] An exterior wall construction method in which a protrusion is provided to protrude from an exterior wall panel, the method comprising: a first step of attaching a waterproof sheet to the periphery of the protrusion in the base material of the exterior wall; a second step of placing a water-stopping member on the protrusion; and a third step of attaching the exterior wall panel to the base material so that the water-stopping member contacts the base material and the exterior wall panel. [Explanation of symbols]

[0110] 10...building, 11...exterior wall, 13...structure, 14...underlayment, 15...exterior wall panel, 16...first exterior wall panel, 16A...first edge surface, 16B...first outer surface, 17...second exterior wall panel, 17A...second edge surface, 17B...second outer surface, 21...protrusion, 21A...first side, 21B...second side, 21R...base portion, 23...waterproof sheet, 24...sealing portion, 30...water-stopping member, 31...first water-stopping portion, 32...opening, 33...bottom portion, 34...insertion portion, 35...second water-stopping portion, 41...first contact surface, 42...second contact surface.

Claims

1. A waterproofing member for waterproofing the periphery of a protruding portion provided on a body of an exterior wall so as to protrude from an exterior wall panel, The wall member is disposed between the base material of the exterior wall and the exterior wall panel so as to at least partially surround the protrusion, and is configured to contact the base material and the exterior wall panel. Water-stopping material.

2. A first water stopper portion at least partially surrounding the protruding portion, The first water-stopping portion has an opening that is located below the protruding portion when the water-stopping member is disposed between the base material and the exterior wall panel. The waterproof member according to claim 1 .

3. A bottom surface portion provided in the first waterproofing portion and in contact with the base material; an insertion portion provided on the bottom surface portion so that the protrusion portion can be inserted therethrough; A second water stopper portion is provided on the bottom surface portion along the insertion portion and contacts the protruding portion. The waterproof member according to claim 2 .

4. The first waterproofing portion has a first contact surface that contacts the base material and a second contact surface that contacts the exterior wall panel. The waterproof member according to claim 2 .

5. Consisting of an elastic member, The waterproof member according to claim 1 .

6. A building having the exterior wall, The outer wall is provided with the protrusion, In the exterior wall, the water-stopping member according to any one of claims 1 to 5 is provided between the base material and the exterior wall panel. architecture.

7. The exterior wall panel includes a first exterior wall panel and a second exterior wall panel arranged side by side with the first exterior wall panel, The first exterior wall panel is arranged so that a width from a first edge surface of the first exterior wall panel to a second edge surface of the second exterior wall panel in a horizontal direction is constant in a vertical direction, The protruding portion protrudes from the exterior wall panel by being inserted between the first edge surface and the second edge surface. The building according to claim 6.

8. A sealing portion is provided at a base portion of the protruding portion protruding from the exterior wall panel, The protrusion has a first side surface facing the first exterior wall panel in the horizontal direction and a second side surface facing the second exterior wall panel in the horizontal direction, The sealing portion is provided to contact the first side surface and a first outer surface of the first exterior wall panel, and to contact the second side surface and a second outer surface of the second exterior wall panel. The building according to claim 7.

9. A method for constructing an exterior wall in which a protrusion is provided so as to protrude from an exterior wall panel, comprising: A first step of attaching a waterproof sheet to the periphery of the protruding portion of the base material of the exterior wall; A second step of disposing a water-stopping member on the protruding portion; and a third step of attaching the exterior wall panel to the base material so that the water-stopping member is in contact with the base material and the exterior wall panel. How to construct exterior walls.

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