Outer wall structure for building

Abstract

To provide an outer wall structure for a building, which can reduce labor of a worker when surface treatment of an outer wall substrate plate is carried out.SOLUTION: An outer wall part 12 of a housing 10 has an outer wall substrate plate 16 fastened and fixed to an outer wall substrate 14 by a screw 50 and a tile outer wall material 18 bonded to the outer wall substrate plate 16 by an adhesive 60. In this case, a joint part between the adjacent outer wall substrate plates 16 is closed by a seal tape, and a screw hole 52 formed by burying a head 50A of the screw 50 in the outer wall substrate plate 16 is closed by a seal 58 having cut-off performance. Thus, since work for filling the screw hole 52 of the outer wall substrate plate 16 with a putty agent is made unnecessary for the outer wall part 12, labor of a worker when surface treatment of the outer wall substrate plate 16 is carried out can be reduced.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an exterior wall structure of a building such as a house. [Background technology]

[0002] Patent Document 1 discloses a joint treatment method for joints at the joints of wall materials. In this joint treatment method, a V-shaped or V-shaped joint groove that opens onto the surface is formed at the joint where the end faces of the wall materials butt together, and the joint groove is filled with joint cement or putty to make it smooth, and then tape is adhered to the surface side of the joint cement or putty. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-036562 Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, buildings such as houses have tiled exterior walls. Tiled exterior walls use tiles or tile sheets in which multiple tiles are arranged vertically and horizontally on a substrate such as a sheet. In tiled exterior walls, exterior wall panels such as siding or gypsum board are used as the base, and the tile material is attached to the exterior wall base panels using adhesives or the like. Furthermore, multiple exterior wall base panels are arranged vertically and horizontally with their end faces butted against each other, and each is fastened to the underlying frame or the like using fastening members such as screws.

[0005] However, the joints between adjacent exterior wall base plates and the screw holes used to fasten the base plates with screws can create gaps (spaces) between the exterior wall material and the base plate. In tiled exterior walls, if there is a gap between the exterior wall material and the base plate when attaching the exterior wall material to the base plate, the adhesion will decrease and the exterior wall material will be more likely to lift.

[0006] From here, the surface of the exterior wall baseboard is treated before the exterior wall material is attached. An adhesive sheet is used to treat the surface of the joints of the exterior wall baseboard, and a sealant is applied across the joints to fill them. At this time, the joints are filled with a sealant.

[0007] In addition, for screw holes, etc., sealant is filled into the screw holes, and then a quick-drying two-component (two-liquid system) putty (sealant) that hardens when mixed is mixed on a trowel plate, and the putty is filled into multiple screw holes one by one using a trowel or spatula.

[0008] However, in the exterior walls of buildings, the exterior wall furring boards are fastened with screws in multiple locations both vertically and horizontally. Therefore, when surface treating the exterior wall furring boards of a building, workers must move not only horizontally but also vertically on temporary scaffolding set up around the perimeter of the building to mix and fill the putty into each screw hole. This type of surface treatment of exterior wall furring boards requires a great deal of labor from the workers, and improvements in the surface treatment of exterior wall furring boards are desired.

[0009] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide an exterior wall structure of a building that can reduce the labor required by workers when performing surface treatment on exterior wall base boards. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, the exterior wall structure of a building according to the first aspect includes exterior wall baseboards arranged so that a plurality of them are in contact with each other on the periphery of the building, and fastened to the exterior wall baseboard by embedding the heads of fastening members that are screwed together at a plurality of locations and screwing the tips of the fastening members into the exterior wall baseboard; a sealant that has water-stopping properties and is affixed to the exterior wall baseboard so as to close holes that are formed in the exterior wall baseboard by embedding the heads of the fastening members; and an exterior wall material that is adhered to the exterior wall baseboard on the outside of the building.

[0011] The exterior wall structure of a building according to the second aspect is the same as that of the first aspect, and includes a water-stopping, band-shaped sheet material that is attached to the joints between adjacent exterior wall base boards.

[0012] The exterior wall structure of a building according to a third aspect is the first or second aspect, wherein the exterior wall base board uses siding that can be applied to the exterior wall finish.

[0013] The exterior wall structure of a building according to the fourth aspect is the second aspect or the third aspect that cites the second aspect, and each of the sealing materials is formed by cutting the sheet material to a predetermined size. [Effects of the Invention]

[0014] In the exterior wall structure of a building according to the first aspect of the present invention, multiple exterior wall base plates are arranged around the periphery of the building. The exterior wall base plates are arranged so as to be in contact with each other, and each has the heads of fastening members that are screwed into it at multiple locations embedded in them, and the tips of the fastening members are screwed into the exterior wall base, thereby fastening and fixing the exterior wall base to the exterior wall base. In addition, exterior wall materials are adhered to the exterior wall base plates.

[0015] Here, a water-stopping sealant is applied to the hole formed in the exterior wall base plate by embedding the head of the fastening member, and the hole is closed by the sealant.

[0016] This has the effect of reducing the labor required by workers when treating the surface of the exterior wall base board, since the surface of the exterior wall base board placed on the exterior wall base can be made flat without using a quick-drying two-component putty agent that hardens when mixed.

[0017] In the exterior wall structure of a building according to the second aspect, a water-stopping band-shaped sheet material is attached to the joints between adjacent exterior wall base boards, thereby effectively sealing the joints between the exterior wall base boards that are arranged in contact with each other to stop water.

[0018] In the exterior wall structure of a building according to the third aspect, siding that can be applied to the exterior wall finish is used for the exterior wall base boards. This eliminates the need for waterproofing treatment, such as filling with sealant, in the joints between adjacent exterior wall base boards and in holes formed in the exterior wall base boards by embedding the heads of fastening members, thereby further reducing the labor required by workers when preparing the surface of the exterior wall base boards to which the exterior wall material will be adhered.

[0019] In the building exterior wall structure according to the fourth aspect, a sheet material is used as the sealing material, and the sealing material is formed by cutting the sheet material to a predetermined size. This eliminates the need to prepare a sealing material separately from the sheet material, which simplifies the procurement of materials and allows for effective use of the sheet material. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 2 is a perspective view showing the exterior of the main part of the house according to the present embodiment. [Figure 2] This is a perspective view of the exterior of the main part of a house, showing an outline of the exterior wall section during construction. [Figure 3] 2. (A) is a cross-sectional view of the main part of the outer wall part in FIG. 1, and (B) is a cross-sectional view of the main part of the outer wall part in FIG. [Figure 4] FIG. 2 is a perspective view showing the schematic configuration of an exterior wall base board. [Figure 5] FIG. 1A is a plan view showing an outline of the seal, and FIG. 1B is a perspective view showing an outline of the seal tape. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Fig. 1 shows in perspective view the main part of a house 10 as a building to which an exterior wall structure according to an embodiment of the present invention is applied, and Fig. 2 shows in perspective view the main part of the house 10 in the middle of construction. Also, Fig. 3(A) and Fig. 3(B) show cross-sectional views of the main part of the exterior wall portion of the house 10 as viewed in the horizontal direction, with Fig. 3(A) corresponding to Fig. 1 and Fig. 3(B) corresponding to Fig. 2. In the drawings, the up-down direction of the house 10 is indicated by an arrow UP, and the direction intersecting the up-down direction is the horizontal direction (arrow omitted).

[0022] 1 and 2, the house 10 is a two-story building with a second floor (upper floor) 10B placed above a first floor (lower floor) 10A. The house 10 is not limited to being a two-story building, but may be a single-story building or three or more stories.

[0023] As shown in Figures 1 to 3, a house 10 has an exterior wall portion 12 to which the exterior wall structure of the present invention is applied, along the outer periphery of the side surface, and the structure of the exterior wall portion 12 of the house 10 will be described below.

[0024] The house 10 according to this embodiment has a skeleton (not shown) of a lightweight steel frame structure such as a steel frame structure or a steel rigid frame structure. The house 10 is not limited to a lightweight steel frame structure, and the skeleton may be of any structure such as a wooden structure.

[0025] The skeleton of the house 10 includes a plurality of pillars and a plurality of girders, each erected at a required position (both not shown), and the house 10 uses square steel for the pillars and H-shaped steel, C-shaped steel, or a combination thereof for the girders. The skeleton employs a known structure in which a plurality of girders are arranged in the gable direction and the girder direction on the floor and ceiling sides of each of the first floor 10A and the second floor 10B, and are fastened and fixed to the pillars to form a frame.

[0026] The house 10 also has an exterior wall base (exterior wall base frame) 14 on which the exterior wall portion 12 is installed. The exterior wall base 14 includes vertical columns (partition studs) 14A arranged at required intervals between each pair of adjacent columns on the periphery of the house 10 (see FIGS. 3(A) and 3(B)). The upper sides of the vertical columns 14A are connected to the main beams on the ceiling side, and the lower sides are connected to the main beams on the floor side (both not shown). As a result, the house 10 has an exterior wall base 14 including multiple vertical columns 14A arranged between each pair of columns on the periphery.

[0027] As shown in Figures 1 and 3(A), the exterior wall section 12 includes an exterior wall base board 16 and a tile exterior wall material 18 as the exterior wall material, and the exterior wall section 12 forms a tiled exterior wall of the house 10. Figure 4 shows a perspective view of the schematic configuration of the exterior wall base board 16.

[0028] 2 and 4, the exterior wall base boards 16 are rectangular plates, with the longitudinal direction being the up-down direction, and multiple boards are arranged in the up-down and horizontal directions. In the exterior wall portion 12, each of the exterior wall base boards 16 is attached to the exterior wall substrate 14, and tile exterior wall materials 18 are attached to the exterior wall base boards 16.

[0029] A material with a flat surface can be used as the exterior wall furring board 16, and various exterior wall materials can be used for the exterior wall furring board 16, with the flat surface being waterproofed and used as the exterior wall finish. Also, as long as the surface (exterior side) is flat, gypsum board or the like can be used for the exterior wall furring board 16. In this embodiment, siding (siding board) is used as the exterior wall material with a flat surface and waterproofing.

[0030] In the exterior wall section 12, adjacent exterior wall base boards 16 are arranged closely together in both the vertical and horizontal directions, butting against each other (arranged so that the end faces of the exterior wall base boards 16 are in contact with each other). The siding used as the exterior wall base boards 16 has a vertical dimension of approximately 2,845 mm, which is the dimension that matches the eaves height of the house 10, and a horizontal dimension of approximately 990 mm. However, the dimensions of the exterior wall base boards 16 are not limited to these.

[0031] As shown in FIG. 3(A), the tile exterior wall material 18 comprises a rectangular base sheet 20, and the base sheet 20 has, for example, a longitudinal direction as the vertical direction and a lateral direction as the horizontal direction.

[0032] As shown in Figures 1 and 3(A), the tile exterior wall material 18 has a plurality of tiles 22 arranged in the vertical and horizontal directions (length and width) of the base sheet 20 on one surface (front surface) of the base sheet 20. The tile exterior wall material 18 can have a general configuration in which the tiles 22 are arranged so that a predetermined joint width is formed lengthwise and widthwise.

[0033] In the exterior wall portion 12, the surface (back surface) of the base sheet 20 opposite the tiles 22 faces the exterior wall base board 16, and the tile exterior wall materials 18 are joined (bonded) to the exterior wall base board 16 using an adhesive or the like. Also, in the exterior wall portion 12, a sealant is used to seal the spaces (joints) between adjacent tile exterior wall materials 18.

[0034] Next, as an operation of this embodiment, construction of the exterior wall portion 12 of the house 10 will be described. In the construction of a house 10, the exterior wall sections 12 are constructed after the skeleton is assembled. As shown in Fig. 2, in the construction of the exterior wall sections 12, scaffolding 30 is installed (assembled) along the periphery of the house 10. Construction of the exterior wall sections 12 begins after the scaffolding 30 is assembled and the roof is laid (after the roof is constructed). Note that Fig. 2 shows an outline of the scaffolding 30 as a single-pipe scaffolding.

[0035] The scaffolding 30 is formed, for example, by erecting a plurality of bases 34, each of which has a base metal fitting 32 attached to one end of a single pipe, with the base metal fitting 32 facing downward, and fastening cloths 36 and arms 38, each of which uses a single pipe of a required length, to the bases 34 with fastening hardware (clamps, not shown). In addition, in the scaffolding 30, scaffolding boards 40 are placed across the arms 38, which are placed at a predetermined height, and are then placed and fixed on the arms 38. Furthermore, required components such as handrails and braces are installed in the scaffolding 30. As a result, the scaffolding 30 becomes a work scaffold that allows workers to work in the height range between the ground and the eaves.

[0036] In constructing the exterior wall section 12, scaffolding 30 is used, and the exterior wall base board 16 is attached to the exterior wall base 14. Screws 50 are used as fastening members to attach the exterior wall base board 16. A plurality of screws 50 are used to fasten the exterior wall base board 16, and the tips of the screws 50 are screwed into the vertical posts 14A so that they fully protrude into the vertical posts 14A. In this way, the exterior wall base board 16 is fastened and fixed to the exterior wall base 14 (vertical posts 14A) at multiple locations.

[0037] At this time, a plurality of screws 50 (for example, two at each end) are screwed into the exterior wall furring board 16 at a predetermined pitch in the width direction at each of the upper and lower ends of the exterior wall furring board 16. Also, a plurality of screws 50 are screwed into the exterior wall furring board 16 at both ends in the width direction of the exterior wall furring board 16 at a predetermined pitch in the up-down direction. This allows the exterior wall furring board 16 to be firmly fastened and fixed to the exterior wall base 14 (vertical columns 14A).

[0038] The screws 50 are embedded in the exterior wall base board 16 so that the heads 50A do not protrude toward the surface of the exterior wall base board 16. At this time, the screws 50 are embedded so that the heads 50A penetrate into the exterior wall base board 16 by several millimeters (for example, less than about 4 mm).

[0039] This prevents the screws 50 (heads 50A) from protruding from the flat surface of the exterior wall base board 16 that faces the tile exterior wall material 18. A plurality of screw holes 52 are opened in the surface of the exterior wall base board 16, and each of the screw holes 52 has a diameter (for example, about 7 mm) corresponding to the head 50A of the screw 50, and a depth of several mm (about 4 mm). The screw holes 52 are hollow, with the head 50A of the screw 50 at the bottom.

[0040] The exterior wall base boards 16 are arranged vertically and horizontally on the side of the house 10. At this time, adjacent exterior wall base boards 16 are butted against each other and arranged so that their end faces are in contact with each other. As a result, narrow joints 54 are formed between adjacent exterior wall base boards 16.

[0041] Here, in the outer wall portion 12, a seal tape 56 is used as a sheet material in the joint portion 54, and a seal 58 is used as a sealing material in the screw hole 52. Fig. 5(A) shows an outline of the seal 58 in a plan view (top view), and Fig. 5(B) shows an outline of the seal tape 56 in a perspective view.

[0042] 5(B), the sealing tape 56 is wound into a roll in a long shape with a predetermined width (for example, 200 mm wide) and a thickness t of about 0.5 mm. For this sealing tape 56, a waterproof butylene-based adhesive tape (butylene adhesive tape) can be used.

[0043] As shown in Fig. 4, the sealing tape 56 is applied across two adjacent exterior wall base boards 56 with a joint portion 54 in between. At this time, the outer peripheral end of the rolled sealing tape 56 is pulled out and applied in the joint direction of the joint portion 54. As a result, in the exterior wall portion 12, the sealing tape 56 seals the joint portion 54 between adjacent exterior wall base boards 16, thereby sealing off the water.

[0044] 5(A), seal 58 has a substantially circular shape, and the outer diameter (diameter) of seal 58 is three times or more the inner diameter of screw hole 52. In this embodiment, the outer diameter of seal 58 is approximately 30 mm for screw hole 52, which has an inner diameter of approximately 7 mm. The size (e.g., outer diameter) of seal 58 may be larger than the outer diameter of screw hole 52, but it is more preferable that the size be approximately three times the outer diameter of screw hole 52 so that seal 58 is less likely to peel off.

[0045] A waterproof butylene-based adhesive tape (butylene adhesive tape) having a thickness t of about 0.5 mm can be used for the seal 58. The seal 58 is formed by cutting a sheet of butylene adhesive tape into a predetermined shape such as a substantially circular shape.

[0046] 3(B) and 4, the seal 58 is affixed to the exterior wall base board 16 so as to close each of the screw holes 52 formed in the exterior wall base board 16. As a result, the screw holes 52 are closed by the seal 58 in the exterior wall portion 12, thereby sealing off water. Furthermore, by closing the screw holes 52 in the exterior wall base board 16, the exterior wall portion 12 is made flat (no recesses due to the screw holes 52 are formed).

[0047] The seal 58 can be made of the same material as the sealing tape 56. The seal 58 is not limited to a substantially circular shape, but may also be a substantially rectangular shape. In this case, the length of one side of the seal 58 can be three or more times the inner diameter of the screw hole 52.

[0048] 5(B), the seal 58 can be formed by cutting the seal tape 56 to the required dimensions. This allows the seal 58 to be formed by preparing the seal tape 56 before constructing the outer wall portion 12, and any excess seal tape 56 can be used effectively.

[0049] Thereafter, in the exterior wall section 12, adhesive 60 is applied to the surface of the exterior wall base board 16 (or the back surface of the tile exterior wall material 18), and the tile exterior wall material 18 is attached to the exterior wall base board 16. At this time, in the exterior wall section 12, adhesive 60 is also applied (adhered) to each of the sealing tape 56 and the seal 58 attached to the exterior wall base board 16, so that the entire back surface of the tile exterior wall material 18 can be tightly adhered to the exterior wall base board 16. As a result, in the exterior wall section 12, a tiled exterior wall is formed in the house 10 in which the tile exterior wall material 18 is prevented from peeling off the exterior wall base board 16 (is less likely to come loose).

[0050] In this way, the exterior wall portions 12 of the house 10 use siding that can be applied to the exterior wall finish (exterior wall material that will be the finish) as the exterior wall base boards 16. For this reason, the waterproofing treatment in the exterior wall base boards 16 is provided by the screw holes 52 formed in each of the exterior wall base boards 16 and the joints 54 between adjacent exterior wall base boards 16.

[0051] In the exterior wall portion 12 of the house 10, screw holes 52 formed when fastening the exterior wall base board 16 to the exterior wall base 14 with screws 50 are closed with sealant 58. In addition, the sealant 58 is made of butylene adhesive tape, which has water-stopping properties.

[0052] Generally, when sealing screw holes 52, screw holes 52 are filled with a sealant, and then a quick-drying two-component (two-liquid system) putty that hardens when mixed is filled into screw holes 52. In this case, the worker must place each component of the putty separately on a trowel board, climb up to scaffolding 30, hold the trowel board in one hand, and use a trowel in the other hand to mix the required amount of each component of the putty for each screw hole 52 and fill each screw hole 52.

[0053] Therefore, the worker must work while standing on the scaffolding 30, which is a high-altitude work position, and must keep an eye on his hands while working, and must also fill the multiple screw holes 52 with putty.

[0054] In contrast, in the exterior wall section 12, it is sufficient to simply attach a seal 58, which has been pre-cut to a predetermined size, to the exterior wall base board 16 for each screw hole 52. Therefore, even if multiple screw holes 52 are formed in each of multiple exterior wall base boards 16, not only is this an easier process than using putty, but it also shortens the work time required while up on the scaffolding 30.

[0055] Furthermore, even if the watertightness of the siding used as the exterior wall base board 16 is reduced because screw holes 52 are formed in the siding, by using a sealant 58 that has watertight properties, it is possible to omit filling the screw holes 52 with a sealant. This further simplifies the work of sealing the screw holes 52 in the exterior wall base board 16 during construction of the exterior wall section 12, further reducing the burden on the worker.

[0056] On the other hand, it is common practice to waterproof the joints 54 between the exterior wall base plates 16 by filling them with a sealant or the like.

[0057] In contrast, in the exterior wall portion 12 of the house 10, a waterproof seal tape 56 is used to seal the joints 54 between adjacent exterior wall base boards 16. As a result, in the exterior wall portion 12, the waterproofing work of filling the joints 54 with a sealant can be omitted, simplifying the work of waterproofing the joints 54 between the exterior wall base boards 16 and reducing the burden on workers.

[0058] Furthermore, in the outer wall portion 12 of the house 10, work on the scaffolding 30 (work at height) is simplified, so that the safety of the construction work on the outer wall portion 12 can be improved.

[0059] In the embodiment described above, the exterior wall portion 12 is provided on almost the entire periphery of the house 10. However, the exterior wall structure of the present invention may be applied to the exterior walls of only a portion of a building. In this case, a structure different from the exterior wall structure of the present invention may be applied to other exterior wall portions. The exterior wall structure of the present invention may also be applied to the sleeve walls of an inner garage, a sleeve wall of an inner porch, a sleeve wall of an inner patio, a sleeve wall of an inner balcony, etc. Furthermore, the exterior wall structure of the present invention may also be applied to special parts (facing the outdoors) that can be considered exterior walls, such as the loading area of ​​a modular bath in a building. [Explanation of symbols]

[0060] 10. Housing (Building) 12 Exterior wall 14 Exterior wall base 16 Exterior wall base plate 18 Tile exterior wall material (exterior wall material) 30 Scaffolding 50 Screws (fastening components) 50A head 52 screw holes (holes) 54 Joint 56 Sealing tape (sheet material) 58 Seal (sealing material)

Claims

1. a plurality of exterior wall baseboards arranged in contact with each other on the periphery of the building, each of which has the head of a fastening member embedded therein and is fastened to the exterior wall baseboard by screwing the tip of the fastening member into the exterior wall baseboard; a sealing material having a water-stopping property and attached to the exterior wall base board so as to close a hole formed in the exterior wall base board by embedding the head of the fastening member; an exterior wall material adhered to the exterior wall base board on the outside of the building; The exterior wall structure of the building, including

2. 2. The exterior wall structure of a building according to claim 1, further comprising a water-stopping, band-shaped sheet material attached to a joint between adjacent exterior wall base plates.

3. 2. The exterior wall structure of a building according to claim 1, wherein the exterior wall base board is made of siding that can be applied to the exterior wall finish.

4. 3. The building exterior wall structure according to claim 2, wherein each of said sealing materials is formed by cutting said sheet material to a predetermined size.

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