Exterior Structure

Abstract

The challenge is to enable the appropriate installation of exterior cladding at the boundary between the area where insulation is installed and the adjacent area where it is not installed, as well as around that boundary. [Solution] The exterior structure of the exterior wall (3) of the building comprises: a base material (13) attached to the outer surface of the exterior wall (3) and extending vertically along the outer surface of the exterior wall (3); insulation material (15) and facing material (17) superimposed in order on the outer surface of the exterior wall (3) next to the base material (13); an exterior material (21) attached to the facing material (17) at a distance from the facing material (17) toward the outside; and an exterior trim piece (29) having an L-shaped horizontal cross section, covering the corner formed by the side and outer surface of the base material (13) from the outside next to the exterior material (21), and attached to the base material (13) at a distance from the side and outer surface of the base material (13).

Description

Technical Field

[0006] , , ,

[0001] The technology disclosed in this specification relates to an exterior structure on the outer wall of a building.

Background Art

[0002] Patent Document 1 discloses a wooden building insulated by an external insulation method. The outer wall structure of this wooden building includes an interior base material, an outer wall body, a structural facing material, a heat insulation layer, and an exterior material laminated in order from the inside of the building to the outside.

[0003] Patent Document 2 discloses a renovation technology for improving the heat insulation performance of the outer wall of a building. Inside the outer wall material of this building, a plurality of intermediate columns are arranged at intervals along the outer periphery of the building, and an existing heat insulation material is disposed between the intermediate columns. However, the existing heat insulation material is not disposed between all the intermediate columns, and there are also locations where the existing heat insulation material is not disposed.

[0004] Patent Document 3 discloses a technology for partially renovating a house rather than the whole house. Specifically, the outer wall, inner wall, floor, and ceiling surrounding the LDK of the house are disassembled, and a new heat insulation material is disposed in the existing structure.

[0005] The applicant is developing a technology for partially improving the heat insulation performance of the outer wall of a building, regardless of whether it is a new construction or renovation of a building such as a house, by an external insulation method. When the heat insulation performance of the outer wall of a building is partially improved, the installation area of the heat insulation material is adjacent to the non-installed area of the heat insulation material, but a step occurs at the boundary between these areas. Even if such a step occurs, it is necessary to install an exterior material at the boundary between the installed area and the non-installed area and its surroundings. When the applicant conducted a prior art investigation, a technology for suitably installing an exterior material at the boundary between the installed area and the non-installed area and its surroundings could not be found.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] The problem that this invention aims to solve is to enable the appropriate installation of exterior materials at the boundary between the area where insulation material is installed and the adjacent area where it is not installed, and around that boundary. [Means for solving the problem]

[0008] This specification discloses the following exterior structure for solving the above problems. The following reference numerals in parentheses are referenced in Figures 1 and 2. The reference numerals in parentheses are included for the purpose of facilitating understanding of the exterior structure, and therefore the scope of the present invention is not limited to the examples shown in the drawings.

[0009] (Section 1) Exterior structure of the exterior wall (3) of a building, A base material (13) is attached to the outer surface of the outer wall (3) and extends vertically along the outer surface of the outer wall (3), Insulation material (15) and facing material (17) are sequentially layered on the outer surface of the outer wall (3) next to the base material (13), An exterior material (21) is attached to the aforementioned surface material (17) at a distance from the surface material (17) toward the outdoors, An exterior trim piece (29) is attached to the base material (13) in a manner that covers the corner formed by the side and outer surface of the base material (13) from the outside, adjacent to the exterior material (21), and is spaced apart from the side and outer surface of the base material (13). An exterior structure equipped with this feature.

[0010] According to paragraph 1, the insulation material (15) and the sheathing material (17) are superimposed on the outer surface of the exterior wall (3) in order, so the sheathing material (17) serves as a base for attaching the exterior cladding material (21). The sheathing material (17) eliminates the difficulty in attaching the exterior cladding material (21) caused by the presence of the insulation material (15). Because the exterior material (21) is separated from the facing material (17), a cavity or gap is formed between the exterior material (21) and the facing material (17). Even if water such as rainwater penetrates into the cavity or gap, the water will not remain but will flow down. The cavity or gap promotes the vaporization of the water that penetrates there. Therefore, the cavity or gap contributes to preventing the deterioration of the facing material (17) and the insulation material (15) due to water. Since the base material (13) is attached to the outer surface of the exterior wall (3), the base material (13) serves as the base for attaching the exterior trim (29). The thickness of the insulation material (15) next to the base material (13) reduces or eliminates the possibility of a step difference occurring between the surface of the exterior trim (29) and the surface of the exterior material (21). Since the exterior trim piece (29) is attached to the base material (13) at a distance from the sides and outer surface of the base material (13), a cavity or gap is formed between the exterior trim piece (29) and the base material (13). Even if water such as rainwater seeps into the cavity or gap, the water flows down without remaining there. The cavity or gap promotes the vaporization of the water that seeps into it. Therefore, the cavity or gap contributes to preventing deterioration of the base material (13) due to water. Because the insulation material (15) is located next to the base material (13), the sides of the insulation material (15) are protected by the base material (13). Since the facing material (17) is superimposed on the insulation material (15), the insulation material (15) is protected by the facing material (17). Based on the above, the exterior structure contributes to the suitability of installing the exterior fittings (29) and exterior materials (21) at the boundary between the area where the insulation material (15) is installed and the adjacent area where it is not installed, and around that boundary.

[0011] (Section 2) A second exterior material (33) is attached to the exterior wall (3) in a manner that is spaced apart from the outer surface of the exterior wall (3) toward the outdoors, next to the exterior material (29) on the opposite side of the exterior material (21) of the exterior material (29). further comprising a step is formed between the outer surface of the exterior material (21) and the outer surface of the second exterior material (33). The exterior structure according to claim 1.

[0012] According to claim 2, since the second exterior material (33) is located beside the exterior member (29) on the side opposite to the exterior material (21) with respect to the exterior member (29), the exterior material (21), the exterior member (29), and the second exterior material (33) are arranged neatly side by side. The arrangement of the exterior material (21), the exterior member (29), and the second exterior material (33) and their arrangement contribute to the improvement of the aesthetic appearance of the exterior structure. Since the second exterior material (33) is separated from the outer surface of the outer wall (3), a cavity or a gap is formed between the second exterior material (33) and the outer wall (3). Even if water such as rainwater infiltrates into the cavity or the gap, the water flows down without staying. The cavity or the gap promotes the vaporization of the water that has infiltrated therein. Therefore, the cavity or the gap contributes to preventing the deterioration of the outer wall (3) due to water.

[0013] (Claim 3) a seal (37) filled in the gap between the second exterior material (33) and the exterior member (29) The exterior structure according to claim 2, further comprising.

[0014] According to claim 3, the seal (37) prevents the infiltration of water from the outside to the inside of the second exterior material (33), the exterior member (29), and the exterior material (21) through the gap. The seal (37) contributes to the improvement of the aesthetic appearance of the joint between the second exterior material (33) and the exterior member (29).

[0015] (Claim 4) further comprising a water diverter (23) attached to the inner corner formed by the side surface of the base material (13) and the outer surface of the outer wall (3) The exterior structure according to any one of claims 1 to 3.

[0016] According to claim 4, the water diverter (23) prevents the infiltration of water between the outer surface of the outer wall (3) and the base material (13).

[0017] (Item 5) A seal (35) filled in the gap between the exterior material (21) and the exterior fitting (29) The exterior structure according to claim 1 or 2, further comprising the same.

[0018] According to Item 5, the seal (35) prevents water from entering the inside of the exterior material (21), the exterior fitting (29), and the second exterior material (33) through the gap from the outside. The seal (35) contributes to improving the aesthetics of the joint between the exterior material (21) and the exterior fitting (29).

[0019] (Item 6) The exterior fitting (29) has an L-shaped horizontal cross-sectional shape, and the exterior fitting (29) extends vertically along the side surface and the outer surface of the base material (13). The exterior structure according to claim 1 or 2.

[0020] According to Item 6, the exterior fitting (29) is neatly and beautifully attached to the base material (13). [Effect of the Invention]

[0021] The exterior fitting and the exterior material are suitably installed at the boundary between the installation area of the heat insulating material and the non-installed area beside it and the surroundings thereof. [Brief Description of the Drawings]

[0022] [Figure 1] FIG. 1 is a perspective view of an external heat insulation structure on the outer wall of a building. [Figure 2] FIG. 2 is a horizontal cross-sectional view of the external heat insulation structure. [Modes for Carrying Out the Invention]

[0023] Hereinafter, embodiments will be described with reference to the drawings. The features and technical effects of the embodiments will be understood from the following detailed description and the drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Since the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the illustrations in the drawings.

[0024] <1. Exterior structure> Figure 1 is a perspective view showing the exterior structure of a building's outer wall. Figure 2 is a horizontal cross-sectional view of the exterior structure. In order to illustrate the interior of the exterior structure in Figure 1, some parts of the exterior structure are omitted, and the right side of the exterior structure in Figure 1 is shown broken along the vertical cross-section.

[0025] The building is a wooden house. In the examples shown in Figures 1 and 2, the building is a wooden house with a wall structure constructed using a panel construction method, particularly a wood panel adhesive construction method. However, the building may also be a wall structure constructed using a frame wall construction method. The building may also be a frame structure constructed using a post-and-beam construction method. The building may also be a combination of a post-and-beam structure and a wall structure. Here, a wall structure refers to one in which the loads of the building and its contents, as well as seismic forces, are supported by walls. Here, a post-and-beam structure refers to one in which the loads of the building and its contents, as well as seismic forces, are supported by columns and beams, and further by bracing as needed.

[0026] The building has an exterior wall 3 around its perimeter. The exterior wall 3 is constructed in an upright position along the perimeter, and the interior space and the exterior space are separated by the exterior wall 3. Since the building is a wall-type structure, the exterior wall 3 is a load-bearing wall. In particular, the exterior wall 3 is constructed by arranging multiple structural wooden wall panels along the perimeter and joining adjacent wooden wall panels with adhesive or the like. The wooden wall panel has a rectangular frame and structural sheathing 5 and 7 attached to both sides of the frame. Auxiliary bracing 9 may be assembled inside the frame. The structural sheathing 5 faces outdoors, and the structural sheathing 7 faces indoors. The structural sheathing 5 and 7 are made of plywood, especially structural plywood. Note that the exterior wall 3 is not limited to those constructed by the wooden panel adhesive method. That is, for example, the exterior wall 3 may not have wooden wall panels, but may have multiple columns, multiple studs, multiple braces and multiple structural sheathing constructed by the post-and-beam method. The exterior wall 3 may not have wooden wall panels, but may have multiple wall frames and multiple structural sheathing materials constructed using a framed wall construction method. In either case, the outer surface of the exterior wall 3 is composed of the surface of a sheathing material such as the structural sheathing material 5. The outer surface of the exterior wall 3 is also called the wall surface.

[0027] The exterior structure of the building's outer wall is a partially insulated structure. The exterior structure comprises a waterproof and breathable sheet 11, a base material 13, insulation material 15, a face material 17, multiple support members 19, multiple exterior materials 21, flashing 23, multiple fitting support members 25, 27, multiple exterior fittings 29, multiple second support members 31, multiple second exterior materials 33, and seals 35, 37. In Figure 1, the illustration of the upper exterior material 21, exterior fittings 29, and second exterior material 33 is omitted in order to illustrate the support members 19, fitting support members 25, 27, second support members 31, and flashing 23. The support members 19 are hidden behind the exterior material 21 shown in Figure 1, the fitting support members 25, 27 are hidden behind the exterior fittings 29 shown in Figure 1, and the second support members 31 are hidden behind the second exterior material 33 shown in Figure 1. In Figure 1, the upper part of the waterproof and breathable sheet 11 is omitted from the illustration in order to show the base material 13, insulation material 15, and structural sheathing material 5. In Figure 1, the base material 13, insulation material 15, and flashing material 23 are shown broken along the vertical cross-section.

[0028] The exterior structure may be constructed when the building is newly built. The entire or a part of the exterior structure may be constructed when the building is renovated. For example, the second support 31 and the second exterior material 33 may already be in place, and the base material 13, insulation material 15, face material 17, support 19, exterior material 21, flashing 23, fitting support 25, 27, exterior fitting 29 and seals 35, 37 may be installed during renovation.

[0029] A waterproof and breathable sheet 11 is laid out and attached to the outer surface of the exterior wall 3. The base material 13 is fixed to the exterior wall 3 by fasteners such as screws or nails. The base material 13 is a wooden square bar. The base material 13 is in contact with the side edges of the insulation material 15 and the facing material 17. The side of the base material 13 and the outer surface of the exterior wall 3 form an inside corner. The waterproof and breathable sheet 11 is folded at this inside corner and attached to the side of the base material 13. The waterproof and breathable sheet 11 is folded at the corner between the side and the outer surface of the base material 13 and attached to the outer surface of the base material 13.

[0030] The insulation material 15 is placed next to the base material 13 and is in contact with the base material 13. The insulation material 15 is attached to the outer surface of the exterior wall 3. The method of attaching the insulation material 15 to the exterior wall 3 can be any method, and the insulation material 15 is supported, attached, fixed, or bonded to the exterior wall 3. The insulation material 15 may be fixed directly or indirectly to the exterior wall 3. For example, screws may be driven from the outside into the insulation material 15 and the exterior wall 3. For example, an adhesive such as putty bond may be applied to the outer surface of the exterior wall 3 and the insulation material 15 may be bonded to the outer surface of the exterior wall 3 by the adhesive.

[0031] The insulation material 15 consists of, for example, phenolic foam, polystyrene foam, glass wool, rock wool, urethane foam, polyolefin foam, or cellulose fiber.

[0032] A facing material 17, such as plywood, is attached to the insulation material 15 from the outside. The method of attaching the facing material 17 to the insulation material 15 can be any method, and the facing material 17 is supported, attached, fixed, or bonded to the insulation material 15. The facing material 17 may be fixed directly or indirectly to the insulation material 15. For example, the facing material 17 may be bonded to the insulation material 15 with an adhesive or the like. For example, screws may be driven into the facing material 17 and the insulation material 15 from the outside, and the facing material 17 and the insulation material 15 may be fixed to the exterior wall 3 by the screws as the screws reach the exterior wall 3. The total thickness of the insulation material 15 and the facing material 17 is equal to the thickness of the base material 13.

[0033] Multiple exterior materials 21 are arranged in a rectangular plate shape. The exterior materials 21 are made of, for example, ceramic, metal, resin, or wood, or a composite material of two or more of these materials. Examples of exterior materials 21 include ceramic exterior materials, metal exterior materials, wood exterior materials, or resin exterior materials. The exterior materials 21 may be coated with a film.

[0034] The exterior material 21 is arranged in a grid pattern on the outer surface of the facing material 17 from the outside of the waterproof and breathable sheet 11. The exterior material 21 is attached to the facing material 17 by support members 19, spaced apart from the outer surface of the facing material 17 and the waterproof and breathable sheet 11 toward the outside, and a ventilation layer 71, which is a cavity or gap, is formed between the exterior material 21 and the waterproof and breathable sheet 11. The support members 19 are arranged in multiple rows with spacing in the horizontal direction. The support members 19 are fixed to the facing material 17 by fasteners such as screws or nails. In the example shown in Figures 1 and 2, the support members 19 are directly fixed to the facing material 17 by fasteners. Alternatively, vertical or horizontal furring strips may be fixed to the facing material 17 by fasteners such as screws or nails, and the support members 19 may be fixed to the vertical or horizontal furring strips by fasteners. The lower end of the exterior material 21 is supported by the support 19 below it, and the upper end of the exterior material 21 is supported by the support 19 above it, thereby attaching the exterior material 21 to the face material 17. Adjacent exterior materials 21 vertically may be joined to each other without adhesive or with adhesive by joints such as tongue and groove, rabbet, or arrowhead joints.

[0035] The flashing 23 is attached from the outside of the waterproof and breathable sheet 11 to the inner corner formed by the side of the base material 13 and the outer surface of the exterior wall 3. The flashing 23 is an angle processed into a mountain shape, or L shape, by sheet metal fabrication. The flashing 23 extends vertically along the inner corner. The flashing 23 is fixed to the base material 13 by screws or adhesive. The flashing 23 is fixed to the exterior wall 3 by screws or adhesive. A portion of the flashing 23 may be sandwiched between the second support 31 and the exterior wall 3.

[0036] Multiple exterior trim pieces 29 are arranged in a V-shape to have an L-shaped horizontal cross-section. The exterior trim pieces 29 are made of, for example, ceramic, metal, resin, or wood, or a composite material of two or more of these materials. The exterior trim pieces 29 are, for example, ceramic exterior materials, metal exterior materials, wood exterior materials, or resin exterior materials. The exterior trim pieces 29 may be coated with a film. The pattern of the exterior trim pieces 29 may be the same as the pattern of the exterior material 21.

[0037] The exterior trim pieces 29 are arranged vertically at the corners formed by the side and outer surfaces of the base material 13. The exterior trim pieces 29 cover the corners formed by the side and outer surfaces of the base material 13 from the outside. The exterior trim pieces 29 are attached to the base material 13 by trim piece supports 25 and 27, spaced apart from the side and outer surfaces of the base material 13 toward the outside. The exterior trim pieces 29 extend vertically along the side and outer surfaces of the base material 13. A ventilation layer 73, which is a cavity or gap, is formed between the exterior trim pieces 29 and the base material 13.

[0038] The fitting support brackets 25 are arranged vertically at equal intervals along the outer surface of the base material 13. The fitting support brackets 25 are fixed to the outer surface of the base material 13 by fasteners such as screws or nails.

[0039] The trim support brackets 27 are arranged vertically at equal intervals along the side surface of the base material 13. The trim support brackets 27 are fixed to the side surface of the base material 13 by fasteners such as screws or nails. The lower end of the exterior trim piece 29 is supported by the trim support brackets 25, 27 below it, and the upper end of the exterior trim piece 29 is supported by the trim support brackets 25, 27 above it, thereby attaching the exterior trim piece 29 to the base material 13. These exterior trim pieces 29 are arranged vertically, and adjacent exterior trim pieces 29 vertically are fixed to the base material 13 by common trim support brackets 25, 27 located between them. The exterior fittings 29 that are adjacent to each other vertically may be joined to each other without using adhesive, or with adhesive, by joints such as tongue and groove, rabbet, or arrowhead joint.

[0040] A gap exists between the exterior trim piece 29 and the exterior material 21. The sealant 35 fills this gap. The surface of the sealant 35 is flush with the surfaces of the exterior material 21 and the exterior trim piece 29. However, the surface of the sealant 35 may be recessed toward the exterior wall 3 from the surfaces of the exterior material 21 and the exterior trim piece 29, or it may protrude toward the outside from the surfaces of the exterior material 21 and the exterior trim piece 29. The sealant 35 is spaced apart from the base material 13 and the facing material 17, and the ventilation layer 73 is connected to the ventilation layer 71. However, the sealant 35 may protrude from the gap between the exterior trim piece 29 and the exterior material 21 to the base material 13 and the facing material 17, and the ventilation layer 73 may be separated from the ventilation layer 71 by the sealant 35. The sealant 35 may be a wet joint material or a dry joint material.

[0041] Multiple second exterior materials 33 are arranged in a rectangular plate shape. The second exterior materials 33 are made of, for example, ceramic, metal, resin, or wood, or a composite material of two or more of these materials. The second exterior materials 33 are, for example, ceramic exterior materials, metal exterior materials, wood exterior materials, or resin exterior materials. The second exterior materials 33 may be coated with a film. The second exterior materials 33 may be the same as the exterior material 21. The pattern of the second exterior material 33 may be the same as the pattern of the exterior material 21. The pattern of the second exterior material 33 may be the same as the pattern of the exterior trim 29.

[0042] The second exterior material 33 is arranged in a grid pattern on the outer surface of the exterior wall 3 from the outside of the waterproof and breathable sheet 11. The second exterior material 33 is attached to the exterior wall 3 by second support members 31, spaced apart from the outer surface of the exterior wall 3 and the waterproof and breathable sheet 11 toward the outside, and a ventilation layer 75, which is a cavity or gap, is formed between the second exterior material 33 and the waterproof and breathable sheet 11. The second support members 31 are arranged in multiple rows with spacing in the horizontal direction. The second support members 31 are fixed to the exterior wall 3 by fasteners such as screws or nails. In the example shown in Figures 1 and 2, the second support members 31 are directly fixed to the exterior wall 3 by fasteners. Alternatively, vertical or horizontal furring strips may be fixed to the exterior wall 3 by fasteners such as screws or nails, and the second support members 31 may be fixed to the vertical or horizontal furring strips by fasteners.

[0043] The lower end of the second exterior material 33 is supported by the second support 31 located below it, by hooking onto the second support 31, and the upper end of the second exterior material 33 is supported by the second support 31 located above it, by hooking onto the second support 31, thereby attaching the second exterior material 33 to the exterior wall 3. Two adjacent second exterior materials 33 are fixed to the exterior wall 3 by a common second support 31 located between them. Two adjacent second exterior materials 33 may be joined to each other without using adhesive, or with adhesive, by joints such as tongue and groove, rabbet, or arrowhead joint.

[0044] A step is formed between the outer surface of the exterior material 21 and the outer surface of the second exterior material 33.

[0045] A gap exists between the second exterior material 33 and the exterior trim 29. The sealant 37 fills this gap. The surface of the sealant 37 is flush with the surface of the exterior material 33. However, the surface of the sealant 37 may be recessed toward the exterior wall 3 from the surface of the exterior material 33, or it may protrude toward the outside from the surface of the exterior material 33. The sealant 37 is spaced apart from the exterior wall 3, and the ventilation layer 75 is connected to the ventilation layer 73. However, the sealant 37 may protrude from the gap between the exterior trim 29 and the exterior material 33 to the exterior wall 3, and the ventilation layer 75 may be separated from the ventilation layer 73 by the sealant 37. The sealant 37 may be a wet joint material or a dry joint material.

[0046] <2. Summary> Since the insulation material 15 and the facing material 17 are superimposed on the outer surface of the exterior wall 3 in order, the facing material 17 serves as a base for attaching the exterior cladding 21. The facing material 17 eliminates the difficulty in attaching the exterior cladding 21 caused by the presence of the insulation material 15.

[0047] Because the exterior material 21 is separated from the facing material 17, a ventilation layer 71 is formed between the exterior material 21 and the facing material 17. Even if water such as rainwater penetrates the ventilation layer 71, the water flows down without remaining there. The ventilation layer 71 promotes the vaporization of the water that penetrates it. Therefore, the ventilation layer 71 contributes to preventing deterioration of the facing material 17 and the insulation material 15 due to water.

[0048] Since the base material 13 is attached to the outer surface of the exterior wall 3, the base material 13 serves as the base for attaching the exterior trim piece 29. The thickness of the insulation material 15 next to the base material 13 reduces or eliminates the possibility of a step difference occurring between the surface of the exterior trim piece 29 and the surface of the exterior material 21.

[0049] Since the exterior trim piece 29 is attached to the base material 13 at a distance from the sides and outer surface of the base material 13, a ventilation layer 73 is formed between the exterior trim piece 29 and the base material 13. Even if water such as rainwater seeps into the cavities or gaps, the water flows down without remaining there. The ventilation layer 73 promotes the vaporization of the water that seeps in. Therefore, the ventilation layer 73 contributes to preventing deterioration of the base material 13 due to water.

[0050] Because the insulation material 15 is located next to the base material 13, the sides of the insulation material 15 are protected by the base material 13. In particular, the contact of the insulation material 15 with the base material 13 enhances the protection of the insulation material 15 by the base material 13.

[0051] Since the facing material 17 is superimposed on the insulation material 15, the insulation material 15 is protected by the facing material 17.

[0052] Since the exterior trim piece 29 is provided in a mountain shape with an L-shaped horizontal cross-section, the exterior trim piece 29 can be attached to the base material 13 neatly and orderly. Exterior trim piece 29 of this shape makes the joint between the adjacent exterior material 21 and the second exterior material 33 neat.

[0053] The exterior structure described above contributes to the suitability of installing the exterior fittings 29 and exterior materials 21 at the boundary between the area where the insulation material 15 is installed and the adjacent area where it is not installed, and around that boundary.

[0054] Because the second exterior material 33 is located next to the exterior fitting 29 on the opposite side of the exterior material 21 with respect to the exterior fitting 29, the exterior material 21, the exterior fitting 29, and the second exterior material 33 are neatly aligned side by side. The exterior material 21, the exterior fitting 29, and the second exterior material 33, as well as their arrangement, contribute to improving the aesthetic appearance of the exterior structure.

[0055] Because the second exterior material 33 is separated from the outer surface of the exterior wall 3, a ventilation layer 75 is formed between the second exterior material 33 and the exterior wall 3. Even if water such as rainwater penetrates the ventilation layer 75, the water flows down without remaining there. The ventilation layer 75 promotes the vaporization of the water that penetrates it. Therefore, the ventilation layer 75 contributes to preventing deterioration of the exterior wall 3 due to water.

[0056] The flashing 23 prevents water from seeping between the outer surface of the exterior wall 3 and the base material 13.

[0057] The seal 35 prevents water from entering the interior of the exterior material 21, exterior trim 29, and second exterior material 33 from the outside through the gap. The seal 35 also contributes to improving the aesthetic appearance of the joint between the exterior material 21 and the exterior trim 29.

[0058] The seal 37 prevents water from entering the second exterior material 33, exterior trim 29, and exterior material 21 from the outside through the gap. The seal 37 also contributes to improving the aesthetic appearance of the joint between the second exterior material 33 and the exterior trim 29.

[0059] The exterior structures described above contribute to reducing energy consumption in homes and minimizing waste generation. In other words, these exterior structures contribute to promoting carbon neutrality, realizing a decarbonized society, and achieving the Sustainable Development Goals (SDGs).

[0060] The embodiments disclosed herein are for illustrative purposes only and are not intended to limit the scope of the invention. The scope of the invention should be interpreted by the terms of the claims. [Explanation of symbols]

[0061] 3. Exterior walls 13. Substrate 15. Insulation 17 Surface material 21 Exterior materials 23. Drain off excess water. 29 Exterior trim pieces 33. Second exterior material 35 stickers 37 Seals

Claims

1. An exterior structure for the outer wall of a building, A base material attached to the outer surface of the exterior wall and extending vertically along the outer surface of the exterior wall, Insulation material and facing material are sequentially layered on the outer surface of the outer wall next to the aforementioned base material, An exterior material attached to the aforementioned surface material at a distance from the surface material toward the outdoors, An exterior trim piece is attached to the base material in a manner that covers the corner formed by the side and outer surface of the base material from the outside, adjacent to the exterior material, and is spaced apart from the side and outer surface of the base material. An exterior structure equipped with this feature.

2. A second exterior material is attached to the exterior wall at a distance from the outer surface of the exterior wall toward the outside, on the side of the exterior material opposite to the exterior material. Furthermore, A step is formed between the outer surface of the first exterior material and the outer surface of the second exterior material. The exterior structure according to claim 1.

3. A seal that fills the gap between the second exterior material and the exterior fitting. The exterior structure according to claim 2, further comprising the above.

4. The system further comprises a flashing that is attached to the inner corner formed by the side surface of the base material and the outer surface of the exterior wall. The exterior structure according to any one of claims 1 to 3.

5. A seal that fills the gap between the exterior material and the exterior fitting. The exterior structure according to claim 1 or 2, further comprising the following:

6. The exterior trim piece has an L-shaped horizontal cross-section, and the exterior trim piece extends vertically along the side and outer surface of the base material. The exterior structure according to claim 1 or 2.

Images