JP2004162298A - Waterproof structure in wall panel joining part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof structure in a wall panel joining part for properly and sufficiently coping even with a joining part with a wall panel for arranging an external facing material in advance. <P>SOLUTION: This waterproof structure in the joining part of the mutual wall panels 1 with external facing material is formed by installing a waterproof sheet 12 and an external facing material 14 in advance on the surface of the rectangular wall panel 11 from above the waterproof sheet 12. The waterproof sheet 12 is installed on the wall panel 11 so that a side end part extends from a side end part of the wall panel 11. The external facing material 14 is installed on the wall panel 11 so that the side end part is positioned in the side end part of the wall panel 11. The reverses of the both waterproof sheets 12 are mutually adhered and folded back with a double-sided adhesive waterproof tape, and are formed as a folding-back part. This folding-back part is sandwiched between the wall panel 11 and a joint material installed in a joint formed between both external facing materials 14. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention mainly relates to a joint between wall panels with an exterior material to which an exterior material is attached in advance, and a junction between a wall panel with an exterior material to which an exterior material is attached in advance and a wall panel to which no exterior material is attached in advance. The present invention relates to a waterproof structure used for a part.
[0002]
[Background technology]
As a waterproof structure at a joint portion of a conventional wall panel, for example, a waterproof sheet is provided on a surface of a rectangular wall panel. There is disclosed a structure in which a waterproof tape having a sufficient width dimension is adhered from above to a waterproof sheet formed at a joint between wall panels (see, for example, Patent Document 1).
Here, the end of the waist edge is located at a position retracted from the side end of the wall panel so as not to hinder adhesion from above the waterproof tape having a sufficient width. According to such a waterproof structure at the joint portion of the wall panel, not only the waterproof effect by the sealing material is obtained at the joint portion between the exterior materials, but also the waterproof effect by the waterproof tape is obtained at the joint portion between the waterproof sheets. In addition, the effect of improving the waterproof performance can be reliably and sufficiently obtained at the joint between the wall panels to which the exterior material is not attached in advance.
[0003]
[Patent Document 1]
JP-A-7-158181
[Problems to be solved by the invention]
However, in such a waterproof structure at the joint of the wall panels, a waterproof tape having a sufficient width dimension is adhered from the upper side, so that it is applied to the joint of the wall panels to which the exterior material cannot be attached in advance. Even if possible, for the joints between wall panels with exterior materials to which exterior materials are attached in advance, and for the junction between wall panels with exterior materials to which exterior materials are attached in advance and wall panels to which exterior materials are not attached in advance Has the problem that it cannot be applied in practice.
[0005]
That is, in the case of the body edge, it is possible to attach the end of the body edge to a position withdrawn from the side end of the wall panel so as not to hinder the adhesion of the waterproof tape. Since the joint formed by the material requires waterproofing with a sealing material, it is practically impossible to mount the joint at a position retracted from the side end of the wall panel. If it is attached to the side edge of the panel, a waterproof tape having a sufficient width cannot be adhered from above.
[0006]
Therefore, an object of the present invention is to provide a waterproof structure at a joint portion of a wall panel that can appropriately and sufficiently cope with a joint portion with a wall panel with an exterior material to which an exterior material is attached in advance.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a waterproof structure at a joint portion of a wall panel, which is provided in advance on a surface of a rectangular wall panel 11 as shown in FIG. The waterproof sheet 12 has a waterproof structure at a joint portion between the wall panels 1 with the exterior material to which the exterior material 14 is attached from above the waterproof sheet 12, and the waterproof sheet 12 has a side end facing the wall panel 11. The exterior material 14 is attached to the wall panel 11 so as to extend from the end, and the exterior material 14 is attached to the wall panel 11 so that the side end is located at the side end of the wall panel 11. The back surfaces of the sheets 12 are adhered to each other with a double-sided waterproof tape and folded to form a folded portion 22, and the folded portion 22 is joined to a joint formed between the exterior members 14 and a joint panel and a wall panel. It is characterized by being sandwiched between the 1.
[0008]
According to the first aspect of the present invention, the back surfaces of the waterproof sheets 12 are adhered to each other with the double-sided waterproof tape 12 and folded back to form a folded portion, which is sandwiched between predetermined gaps. Appropriate and sufficient measures can be taken even at the joint with the attached wall panel 1 with exterior material.
[0009]
Therefore, even at such a joint portion with the wall panel 1 with the exterior material, the effect of improving the waterproof performance can be reliably and sufficiently obtained.
[0010]
The invention according to claim 2 is a waterproof structure at a joint portion of a wall panel. The waterproof structure is, for example, as shown in FIG. A waterproof sheet 72 and a waterproof sheet 72 are provided in advance on the surface of the wall panel 51 with the exterior material to which the body edge 13 and the exterior material 64 are attached from above the sheet 12 and the exterior material 64 from above the body edge 13. This is a waterproof structure at the joint with the torso wall panel 52 to which the torso 73 is attached from above, and the waterproof sheets 12 and 72 have their side ends extending from the side ends of the wall panel 11. The exterior material 64 of the exterior-attached wall panel 51 is attached to the wall panel 11 such that a side end of the exterior material 64 extends from an end of the body edge 13. Sheet 12 The back surfaces of the 72 are adhered to each other by the double-sided waterproof tape 21 and folded to form a folded portion, and the folded portion is sandwiched between the side end of the exterior material 64 and the wall panel 11. .
[0011]
According to the second aspect of the present invention, the back surfaces of the waterproof sheets 12 and 72 are adhered to each other by the double-sided waterproof tape 21 and folded back to form a folded portion, which is sandwiched between predetermined gaps. Even at the joint with the exterior material-attached wall panel 51 to which the fixing member 64 is attached, appropriate and sufficient measures can be taken.
[0012]
Therefore, even at such a joint portion with the exterior material-attached wall panel 51, the effect of improving the waterproof performance can be reliably and sufficiently obtained.
[0013]
Further, as shown in FIG. 2, for example, as shown in FIG. 2, in the waterproof structure at the joint of the wall panels according to claim 2, a tongue 64a is provided at a side end of the exterior material 64. It is characterized by being done.
[0014]
According to the third aspect of the present invention, it is possible to ensure the waterproof effect of the sealing material at the joint between the exterior materials 64 and 74, and to ensure that the exterior material 64 and the wall panel 51 with the exterior material are attached in advance. At the joint, the effect of improving waterproof performance can be obtained more reliably and sufficiently.
[0015]
Furthermore, as shown in FIG. 2, for example, in the waterproof structure at the joint portion of the wall panel according to claim 2 or 3, the waterproof sheet 12 of the wall panel with exterior material 51 is provided. Is characterized in that the length dimension extending from the side end portion of the exterior material 64 and the length dimension extending from the end portion of the trunk edge 73 of the waterproof sheet 72 of the wall panel 52 having the trunk edge are substantially equal to each other. I have.
[0016]
According to the fourth aspect of the present invention, it is possible to effectively avoid a situation in which the side end of the exterior material 64 is in the way when the back surfaces of the side ends of the waterproof sheets 12 and 72 are bonded with the double-sided waterproof tape 21. It is possible to more appropriately and sufficiently cope with the joint portion with the exterior material-attached wall panel 51 to which the exterior material 64 is attached in advance.
[0017]
According to a fifth aspect of the present invention, as shown in FIG. 2, for example, in the waterproof structure at the joint portion of the wall panel according to any one of the first to fourth aspects, the waterproof sheet has a waterproof transparent film. It is a wet sheet.
[0018]
According to the fifth aspect of the invention, the moisture permeability from the high temperature side to the low temperature side is secured on the outside air side, so that it is possible to prevent internal dew condensation.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0020]
◎ Embodiment 1
[Waterproof structure at the joint of wall panel 1 with exterior material]
FIG. 1 is a cross-sectional view illustrating the entire structure of a waterproof structure at a joint of a wall panel according to Embodiment 1 of the present invention (FIG. 1A is a factory manufacturing stage, FIG. 1B is a site construction stage, FIG. 1 (c) is a step of completing waterproofing).
[0021]
In the first embodiment, the waterproof structure at the joint of the wall panels is applied to the joint of the wall panels 1 with the exterior material to which the exterior material 14 is attached in advance from the factory manufacturing stage, as shown in FIG. It is configured to be performed.
[0022]
Hereinafter, the structure of the wall panel 1 with an exterior material, the joint structure of the wall panel 1 with an exterior material, and the waterproof structure at the junction of the wall panel 1 with an exterior material will be described in detail in this order.
[0023]
(1) Structure of Wall Panel 1 with Exterior Material The wall panel 1 with exterior material is configured as a member that forms the outer peripheral wall of a house constructed by a panel construction method.
[0024]
Note that the panel construction method is a construction method in which building components such as walls, floors, and roofs are formed into panels using basic plane dimensions in a factory manufacturing stage in advance, and these panels are assembled in a site construction stage.
In the first embodiment, the wall panel with exterior material 1 is manufactured at a factory manufacturing stage, and as shown in FIG. 1A, a waterproof sheet 12 is formed on a surface of a rectangular wall panel 11 in advance. And a body edge 13 from above the waterproof sheet 12 and an exterior material 13 from above the body edge 13.
[0025]
Specifically, as shown in FIG. 1A, the wall panel 11 has an auxiliary crosspiece (not shown) inside a rectangular frame (not shown) assembled into a rectangular frame shape by vertical and horizontal frame members 11a. Are attached vertically and horizontally, and the face material 11b is adhered to both sides of the frame material 11a and the auxiliary crosspiece.
[0026]
The waterproof sheet 12 is attached to the wall panel 11 such that the side end thereof extends, for example, by 60 mm from the side end of the wall panel 11 on the face material 11b on the outdoor side of the wall panel 11. (See FIG. 1A).
[0027]
As such a waterproof sheet 12, for example, a waterproof and moisture permeable sheet such as Tyvek (trade name, manufactured by DuPont), which is a sheet having a microbore that does not transmit water but transmits water vapor, is used.
[0028]
That is, by ensuring the moisture permeability from the high temperature side to the low temperature side on the outside air side, internal condensation is effectively prevented.
[0029]
Further, the body edge 13 is attached to the wall panel 11 at a predetermined interval in the vertical direction on the waterproof sheet 12 and the side end thereof is retracted, for example, by 10 mm from the side end of the wall panel 11. (See FIG. 1A).
[0030]
Furthermore, the exterior material 14 is a plate material, and is configured to be attached to the wall panel 11 such that the side edge of the exterior material 14 is located on the side edge of the wall panel 11 on the body edge 13 ( FIG. 1A).
[0031]
As such an exterior material 14, a material made of an inorganic material such as lightweight cellular concrete and having a decorative joint or the like (not shown) on the outdoor surface is used.
[0032]
(2) Joining Structure of Wall Panels 1 with Exterior Material The joining structure of the wall panels 1 with exterior materials is specifically formed by fastening the frame members 11a of the wall panels 1 with both exterior materials by fastening bolts. It is supposed to be.
[0033]
Of course, the joint structure between the wall panels 1 with the exterior material is not limited to this, and any structure that can use bolts or an adhesive can be used as long as sufficient strength as the outer peripheral wall can be secured. It does not matter whether the frame members 11a are joined together or other members are joined.
[0034]
That is, as a joining structure of the wall panels 1 with the exterior material, for example, the wall panels 11 are bonded to each other with an adhesive applied to the end surfaces of the wall panels 1 on both sides of the exterior material, and the wall panel 1 with one exterior material A nail which is obliquely driven from the back side toward the wall panel 1 with the exterior material on the other side, and which is obliquely driven from the back side of the wall panel 1 with the exterior material onto the wall panel 1 with the exterior material is also used. (See the broken line in FIG. 1).
[0035]
(3) Waterproof Structure at the Joint of Wall Panel with Exterior Material 1 As the waterproof structure at the joint of the wall panel with exterior material 1, as shown in FIG. Are folded back to form a folded portion 22, and the folded portion 22 is sandwiched between the wall panel 11 and a gasket 23 as a joint material attached to the joint formed between the exterior members 14. It is configured as what is.
[0036]
Specifically, the waterproof sheet 12 is attached to the wall panel with exterior material 1 so that, for example, its side end extends 60 mm from the side end of the wall panel with exterior material 1 (FIG. 1 ( a)). The double-sided waterproof tape 21 is adhered to the back surface of the side end portion of the wall panel 1 with the exterior material to form a band-like adhesive portion.
[0037]
Further, as the double-sided waterproof tape 21, for example, a double-sided adhesive tape having an adhesive portion on both sides made of acrylic and having a width of 10 mm to 20 mm is used (see FIG. 1A). The band-shaped adhesive portion formed at the side end of the waterproof tape 21 is folded in the width dimension of the double-sided pressure-sensitive adhesive tape, thereby forming a folded portion 22 which is a band-shaped thick portion (FIG. 1 ( b)).
[0038]
That is, the folded portion 22 is configured as a band-shaped thick portion formed by further folding a band-shaped adhesive portion formed by bonding the back surfaces of the side ends of the waterproof sheets 12 with the double-sided waterproof tape 21. (See FIG. 1B).
[0039]
Further, as the gasket 23, an elastic dry joint material made of an elastic resin such as soft vinyl chloride is used.
[0040]
That is, according to the waterproof structure at the joint portion of the wall panel 1 with the exterior material, the folded portions 22 formed by bonding the back surfaces of the side ends of the waterproof sheets 12 together with the double-sided waterproof tape 21 and folding the waterproof sheets 12 have a predetermined gap. In addition to the waterproof effect by the gasket 23 as a sealing material at the joint between the exterior materials 14, the waterproof effect by the waterproof tape is also obtained at the joint between the waterproof sheets 12. It is supposed to be.
[0041]
Therefore, according to such a waterproof structure at the joint of the exterior material-attached wall panels 1, appropriate and sufficient waterproofing can be performed even at the junction of the exterior material-attached wall panels 1 to which the exterior material 14 is attached in advance. It has become.
[0042]
Next, a waterproofing method at the joint of the wall panel with exterior material 1 according to the first embodiment will be described with reference to FIG.
[0043]
First, in the factory, the construction of the wall panel 11, the attachment of the waterproof sheet 12 on the face material 11b, the attachment of the body edge 13 on the waterproof sheet 12, and the attachment of the exterior material 14 on the body edge 13 By performing the installation, the wall panel 1 with the exterior material to which the exterior material 14 is attached in advance is manufactured (see FIG. 1A).
[0044]
At this time, the adhesive portion on one surface of the double-sided waterproof tape 21 is adhered to the back surface of one side end of both waterproof sheets 12, and the adhesive portion on the other surface is detachable. The pattern 21a is attached (see FIG. 1A).
[0045]
Then, at the construction site, the two frame members 11a are fastened to each other using the bolts and the nuts 31, so that the wall panels 1 with both exterior materials are firmly joined to each other (see FIG. 1A).
[0046]
At this time, the side end portions of both waterproof sheets 12 including the double-sided waterproof tape 21 are pulled out from joints formed by both exterior members 14 (see FIG. 1A).
[0047]
Next, the release paper 21a of the waterproof tape adhered to the side ends of the waterproof sheets 12 pulled out from the joint is peeled off, and the peeled adhesive portion is water-tightly adhered to the back surface of the other side end.
[0048]
As a result, a band-shaped adhesive portion that ensures watertightness is formed continuously at a portion where the two waterproof sheets 12 are joined.
[0049]
Then, by folding such a band-shaped adhesive portion, a folded portion 22 as a band-shaped thick portion is obtained at a portion where the two waterproof sheets 12 are joined (see FIG. 1B).
[0050]
Subsequently, the folded portion 22 is pushed between the exterior material 14 and the wall panel 11 from the joint formed by the two exterior materials 14, and the gasket 23 is attached to the joint (see FIG. 1C).
[0051]
Then, the folded portion 22 is sandwiched between the front end of the gasket 23 and the wall panel 11 (see FIG. 1C), thereby joining the wall panel 1 with the exterior material according to the first embodiment. The waterproofing method in the section ends.
[0052]
That is, according to such a waterproofing method at the joint portion of the wall panel 1 with the exterior material, the folded portions 22 formed by bonding the back surfaces of the side ends of the waterproof sheets 12 together with the double-sided waterproof tape 21 and folding the waterproof sheets 12 have a predetermined gap. In addition to the waterproof effect by the gasket 23 as a sealing material at the joint between the exterior materials 14, the waterproof effect by the waterproof tape is also obtained at the joint between the waterproof sheets 12. It is supposed to be.
[0053]
Therefore, according to such a waterproofing method at the joint of the exterior material-attached wall panels 1, it is possible to perform appropriate and sufficient waterproofing even at the junction of the exterior material-attached wall panels 1 to which the exterior material 14 is attached in advance. It has become.
[0054]
◎ Embodiment 2
[Waterproof structure at the junction of wall panels]
FIG. 2 is a cross-sectional view illustrating the entire structure of a waterproof structure at a joint of a wall panel according to Embodiment 2 of the present invention (FIG. 2A is a factory manufacturing stage, FIG. 2 (c) is a step of completing waterproofing). Note that components similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed description thereof will be omitted.
[0055]
The waterproof structure at the joint of the wall panels according to the second embodiment is substantially the same as that of the first embodiment, as shown in FIG. Is applied to the joint between the wall panel with exterior material 51 to which the exterior material 74 is attached and the exterior wall material 74 to which the exterior edge 74 is not attached in advance in the factory manufacturing stage but the exterior edge 73 is attached. Have been.
[0056]
Therefore, the following differences are also observed in the structure of the wall panel with the exterior material and the waterproof structure at the joint of the wall panels.
[0057]
(1) Structure of Wall Panel with Exterior Material As shown in FIG. 2 (a), the wall panel with exterior material 51 is provided on a surface of a rectangular wall panel 11 in advance from a waterproof sheet 12 and a waterproof sheet 12. The exterior member 64 is attached from above the edge 13 and the body edge 13.
[0058]
This wall panel 51 with an exterior material is substantially the same as the first embodiment in that it has a rectangular wall panel 11, a waterproof sheet 12 as a base, a body edge 13, and an exterior material 64 as constituent members. However, this embodiment is significantly different from the first embodiment in the dimension of the exterior material 64 entering and leaving the side end of the wall panel 11.
[0059]
That is, the exterior material 64 is attached to the wall panel 11 such that its side end extends, for example, 11 mm from the side end of the wall panel 11 (see FIG. 2A).
[0060]
On the other hand, the wall panel 52 with the rim is configured such that a waterproof sheet 72 and a rim 73 from above the waterproof sheet 72 are attached to the surface of the rectangular wall panel 11 in advance.
[0061]
This wall panel 52 with a rim is substantially the same as the first embodiment in having a rectangular wall panel 11, a waterproof sheet 72 as a base, and a rim 73 as constituent members. This embodiment is significantly different from the first embodiment in that the second embodiment does not include the waterproof sheet 72 and the entrance and exit dimensions of the waterproof sheet 72 and the body edge 73 with respect to the side end of the wall panel 11.
[0062]
That is, the waterproof sheet 72 is attached to the wall panel 11 such that its side end extends, for example, 45 mm from the side end of the wall panel 11 (see FIG. 2A). Further, the body edge 73 is attached to the wall panel 11 such that its end is retracted, for example, by 15 mm from the side end of the wall panel 11 (see FIG. 2A).
[0063]
(2) Waterproof Structure at the Joint between the Wall Panel with Exterior Material 51 and the Wall Panel with Body Edge 52 The waterproof structure at the junction between the wall panel with exterior material 51 and the body edged wall panel 52 is as shown in FIG. Then, the back surfaces of the waterproof sheets 12 and 72 are adhered to each other by the double-sided waterproof tape 21 and folded to form a folded portion 22, which is sandwiched between the side end of the exterior material 64 and the wall panel 11. It is configured as attached.
[0064]
Specifically, the exterior material 64 of the wall panel with exterior material 51 is attached to the wall panel 11 such that its side end extends, for example, 11 mm from the side end of the wall panel 11.
[0065]
Further, the waterproof sheet 12 in the wall panel 51 with the exterior material is attached to the wall panel 11 such that its side end extends, for example, 60 mm from the side end of the wall panel 11.
On the other hand, the waterproof sheet 72 in the wall panel 52 with the rim is attached to the wall panel 11 such that its side end extends, for example, 45 mm from the side end of the wall panel 11.
[0066]
Here, the length of the waterproof sheet 12 of the wall panel 51 with the exterior material extending from the side end of the exterior material 64 and the length of the waterproof sheet 72 of the wall panel 52 with the body edge extending from the end of the body edge 73. The dimensions are almost the same.
[0067]
Accordingly, when the back surfaces of the side ends of the waterproof sheets 12 and 72 are adhered to each other with the double-sided waterproof tape 21, the side end of the exterior material 64 becomes an obstacle, and the side end of one of the waterproof sheets 12 and 72 is connected to the other. It is possible to effectively avoid the situation that the length is excessively long or short as compared with the side end portions of the waterproof sheets 72 and 12. It is possible to more appropriately and sufficiently cope with the joint with the wall panel (see FIG. 2B).
[0068]
On the other hand, at the side end of the exterior material 64, at the stage after the joining of the exterior material-attached wall panel 51 and the body edged wall panel 52 is completed, the tongue of the exterior material 74 attached to the body edged wall panel 52 is provided. A tongue 64a that fits with 74a is attached.
[0069]
As a result, the waterproof effect of the sealing material at the joint between the exterior materials 64 and 74 is reliably and sufficiently ensured. As a result, at the joint between the wall panel 51 with the exterior material and the wall panel 52 with the waist edge. The effect of improving the waterproof performance can be obtained more reliably and sufficiently.
[0070]
That is, also in such a waterproof structure at the joint portion of the wall panels, similarly to the first embodiment, the folded portions 22 formed by bonding the back surfaces of the side ends of the waterproof sheets 12 and 72 together with the double-sided waterproof tape 21 and folding the waterproof sheets. Is sandwiched between the predetermined gaps, and even at the joint between the wall panel 51 with the exterior material to which the exterior material 64 is attached in advance and the wall panel 52 with the body edge to which the exterior material 74 is not attached in advance, an adequate and sufficient Waterproof construction can be performed.
[0071]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the waterproof structure in the junction part of the wall panel which concerns on this invention, the improvement effect of waterproof performance will also be acquired reliably and sufficiently also in the junction part with the wall panel with exterior materials.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining the entire structure of a waterproof structure at a joint portion of a wall panel according to Embodiment 1 of the present invention (FIG. 1A is a factory manufacturing stage, and FIG. FIG. 1 (c) shows a construction stage, and FIG.
FIG. 2 is a cross-sectional view (FIG. 2 (a) is a factory manufacturing stage, and FIG. 2 (b) is a field view illustrating an overall configuration of a waterproof structure at a joint portion of a wall panel according to Embodiment 2 of the present invention. FIG. 2 (c) is a construction stage, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall panel with exterior material 11 Wall panel 11a Frame material 11b Face material 12 Waterproof sheet 13 Body edge 14 Exterior material 21 Double-sided waterproof tape 21a Release paper 22 Folding part 23 Gasket 31 Bolt and nut 51 Wall panel with exterior material 52 Body edge Wall panel 64 Exterior material 64a Tone 72 Waterproof sheet 73 Body edge 74 Exterior material 74a Tone

Claims (5)

A waterproof structure at a junction between wall panels with an exterior material in which a waterproof sheet and an exterior material are previously attached to the surface of the rectangular wall panel from above the waterproof sheet,
The waterproof sheet is attached to the wall panel so that a side end thereof extends from a side end of the wall panel,
The exterior material is attached to the wall panel such that a side end thereof is located at a side end of the wall panel,
The back surfaces of the two waterproof sheets are bonded to each other with a double-sided waterproof tape and folded to form a folded portion, and the folded portion is formed between the joint material attached to the joint formed between the two exterior materials and the wall panel. A waterproof structure at a junction of a wall panel, which is sandwiched between the panels. On the surface of the rectangular wall panel, a waterproof sheet and a wall panel with an exterior material in which the outer rim is attached from above the tarpaulin and the outer edge of the waterproof sheet in advance, and on the surface of the rectangular wall panel, A waterproof structure at a junction between the waterproof sheet and a wall panel with a torso attached to the torso from above the waterproof sheet,
The waterproof sheet is attached to the wall panel so that a side end thereof extends from a side end of the wall panel,
An exterior material of the exterior material-equipped wall panel is attached to the wall panel so that a side end thereof extends from an end of the trunk edge,
The back surfaces of the two waterproof sheets are adhered to each other with a double-sided waterproof tape and folded to form a folded portion, and the folded portion is sandwiched between a side end of the exterior material and a wall panel. Waterproof structure at the junction of the wall panels. The waterproof structure at the joint part of the wall panel according to claim 2, wherein a tongue is provided at a side end of the exterior material. The length dimension in which the waterproof sheet of the wall panel with the exterior material extends from the side end of the exterior material and the length dimension in which the waterproof sheet of the wall panel with the waist edge extends from the end of the waist edge are almost equal. The waterproof structure at the joint of the wall panel according to claim 2 or 3, wherein the waterproof structure is provided. The waterproof structure at the joint of a wall panel according to any one of claims 1 to 4, wherein the waterproof sheet is a waterproof moisture-permeable sheet.

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