JP6832722B2 - Outer wall joint structure - Google Patents

Description

The present invention relates to an outer wall joint structure.

Patent Document 1 below discloses an outer wall joint structure in which a backup material is inserted into a vertical joint of an outer wall panel and filled with a sealing material.

Japanese Unexamined Patent Publication No. 2003-239491

In the outer wall joint structure of Patent Document 1, if the outer wall panel moves during an earthquake or the like, the joint surface between the sealing material and the outer wall panel may break. In such a case, the water blocking performance of the sealing material is deteriorated, and rainwater may infiltrate from the broken joint surface to the indoor side of the outer wall panel.

In view of the above facts, it is an object of the present invention to provide an outer wall joint structure in which the water blocking performance does not easily deteriorate even if the plate material constituting the wall moves.

In the outer wall joint structure of the first aspect, a plate-shaped first outer wall material in which a groove portion in which a groove wall is inclined is formed along a side end surface, and a side end surface in which a ridge engaging with the groove portion faces the side end surface. It is composed of a plate-shaped second outer wall material formed along the above and an elastic material, and is arranged in a compressed state between the groove wall and the ridge, and the first outer wall material and the second outer wall. Vertical joint water blocking member that stops water between the outside and inside of the material,
Is equipped with.

According to the outer wall joint structure of the first aspect, the groove wall of the groove formed along the side end surface of the first outer wall material is inclined. A vertical joint water blocking member made of an elastic material is compressed and arranged between the inclined groove wall and the ridge formed along the side end surface of the second outer wall material.

As a result, when at least one of the first outer wall material or the second outer wall material moves in a direction in which the side end faces are separated from each other (left and right when the first outer wall material is viewed from the front), or the side end faces of each other are displaced. In any direction (front-back direction when the first outer wall material is viewed from the front), the compressed vertical joint water blocking member approaches the original state and maintains the state of contact with the groove wall and the ridge. Therefore, a gap is unlikely to occur between the vertical joint water blocking member and the groove wall and the ridge. Therefore, the water blocking performance between the outside and the inside of the first outer wall material and the second outer wall material is unlikely to deteriorate. The "outside" refers to the space on the outdoor side, and the "inside" refers to the space on the indoor side.

In the outer wall joint structure of the second aspect, a plate-shaped first outer wall material having a groove formed along the side end surface and a ridge engaging with the groove are formed along the side end surface facing the side end surface. It is composed of a plate-shaped second outer wall material and an elastic material, and is arranged in a compressed state between the side end surface of the first outer wall material and the side end surface of the second outer wall material. It includes an outer wall material and a vertical joint water blocking member that stops water between the outside and the inside of the second outer wall material.

According to the outer wall joint structure of the second aspect, a vertical joint water blocking member made of an elastic material is compressed and arranged between the side end surface of the first outer wall material and the side end surface of the second outer wall material. Has been done.

As a result, when at least one of the first outer wall material or the second outer wall material moves in the direction in which the side end faces are separated from each other (the left and right directions when the first outer wall material is viewed from the front), the compressed vertical joint water blocking member Is maintained in contact with the side end face of the first outer wall material and the side end face of the second outer wall material as the siding approaches the original state, so that the vertical joint water blocking member, the side end face of the first outer wall material, and the second A gap is unlikely to occur between the outer wall material and the side end surface. Further, even when the side end faces are displaced from each other (the front-back direction when the first outer wall material is viewed from the front), the compressed state of the vertical joint water blocking member is maintained. A gap is unlikely to occur between the side end surface of the first outer wall material and the side end surface of the second outer wall material. Therefore, the water blocking performance between the outside and the inside of the first outer wall material and the second outer wall material is unlikely to deteriorate.

The outer wall joint structure of the third aspect is arranged in the horizontal joint formed below the first outer wall material and the second outer wall material, and receives the flowing water flowing through the vertical joint water blocking member to the outside. It is equipped with a water receiving member to flow.

According to the outer wall joint structure of the third aspect, rainwater flowing along the vertical joint water blocking member at the vertical joint between the first outer wall material and the second outer wall material is received by the water receiving member and is received on the outside (outdoor side). Space). As a result, rainwater flowing from the vertical joint to the horizontal joint is less likely to enter the inside (indoor space) along the horizontal joint.

In the outer wall joint structure of the fourth aspect, the water receiving member extends from both ends of the water receiving member toward the outdoor side with a water receiving portion arranged on the indoor side of the vertical joint water blocking member in a plan view. It is equipped with a water conveyance section.

According to the outer wall joint structure of the fourth aspect, rainwater flowing through the vertical joint water blocking member at the vertical joint between the first outer wall material and the second outer wall material is stopped by the water receiving portion. In addition, the rainwater stopped by the water receiving portion flows to the outdoor side of the horizontal joint along the headrace portion.

As a result, when there is a vertical joint below the vertical joint between the first outer wall material and the second outer wall material, the rainwater stopped by the water receiving portion flows downward along the vertical joint. Alternatively, it flows to the outdoor side of the horizontal joint along the headrace.

Further, when there is no vertical joint below the vertical joint between the first outer wall material and the second outer wall material, the rainwater stopped by the water receiving portion flows to the outdoor side of the horizontal joint along the headrace portion.

In the outer wall joint structure of the fifth aspect, the water receiving member has a bottom plate formed in a portion surrounded by the water receiving portion and the water conducting portion, and is arranged on the outer surface of the water conducting portion along the horizontal joint. The end face of the horizontal joint water blocking member is abutted.

According to the outer wall joint structure of the fifth aspect, since the bottom plate is formed in the portion of the water receiving member surrounded by the water receiving portion and the water guiding portion, it is difficult for rainwater to flow below the water receiving member. As a result, the rainwater stopped by the water receiving portion flows to the outdoor side along the headrace portion. Further, since the end surface of the horizontal joint water blocking member is abutted against the outer surface of the water guide portion, rainwater flowing to the outdoor side along the water guide portion is suppressed from flowing from the outside of the water guide portion to the indoor side.

According to the outer wall joint structure of the first aspect, the water stopping performance is unlikely to deteriorate even if the plate material constituting the wall moves.

According to the outer wall joint structure of the second aspect, the water stopping performance is unlikely to deteriorate even if the plate material constituting the wall moves.

According to the outer wall joint structure of the third aspect, it is possible to prevent rainwater flowing from the vertical joint to the horizontal joint from invading from the horizontal joint to the indoor side.

According to the outer wall joint structure of the fourth aspect, rainwater flowing from the vertical joint to the horizontal joint can be flowed to the outdoor side of the lower vertical joint or the horizontal joint.

According to the outer wall joint structure of the fifth aspect, even when there is no vertical joint below the horizontal joint, rainwater flowing from the vertical joint to the horizontal joint can be suppressed from entering from the horizontal joint to the indoor side.

It is a partial elevation view which shows the wall body to which the outer wall joint structure which concerns on 1st Embodiment of this invention is applied. It is sectional drawing 2-2 in FIG. 1 and FIG. 5 which shows the structure of the vertical joint in the outer wall joint structure which concerns on 1st and 2nd Embodiment of this invention. It is a cross-sectional view of line 3-3 in FIG. 1 which shows the structure of the horizontal joint in the outer wall joint structure which concerns on 1st Embodiment of this invention. It is a perspective view which shows the structure of the water receiving member in the outer wall joint structure which concerns on 1st Embodiment of this invention. It is a partial elevation view which shows the wall body to which the outer wall joint structure which concerns on 2nd Embodiment of this invention is applied. 6 is a sectional view taken along line 6-6 in FIG. 5 showing a structure of a horizontal joint in the outer wall joint structure according to the second embodiment of the present invention. It is a perspective view which shows the structure of the water receiving member in the outer wall joint structure which concerns on 2nd Embodiment of this invention. It is a plan sectional view which shows the modification of the installation position of the vertical joint water stop member in the outer wall joint structure which concerns on 1st and 2nd Embodiment of this invention.

[First Embodiment]
(Outer wall joint structure)
The outer wall joint structure in the first embodiment is a water blocking structure applied to the vertical joints 20 and the horizontal joints 30 of the outer wall panel 12 constituting the wall body 10 shown in FIG.

The outer wall panel 12 is an ALC (lightweight cellular concrete) plate, and is fixed to the building skeleton on the back side of the paper surface in FIG. 1 by using a metal fitting to form a wall body 10 having a dry structure.

The vertical joints 20 between the outer wall panels 12 adjacent to each other have a continuous joint configuration (through joints, potato joints) between the upper and lower outer wall panels 12, and at the intersection E1 of the vertical joints 20 and the horizontal joints 30. The sealing material 42 that stops water at the vertical joint 20 is used as a through material, and the sealing material 44 that stops water at the horizontal joint 30 is abutted and adhered to the sealing material 42.

The sealing materials 42 and 44 are amorphous sealing materials (elastic sealing) that stop water at the vertical joints 20 and the horizontal joints 30 at the portion closest to the outdoor side, respectively. After fixing the outer wall panel 12 to the building frame, caulking is performed. Filling is done using a gun or the like. In the following description, the sealing materials 42 and 44 may be collectively referred to as the primary water blocking material 40. Further, as the material of the sealing materials 42 and 44, resins such as silicon-based, modified silicon-based, and polyurethane-based are appropriately used.

(Vertical joint)
As shown in FIGS. 1 and 2, the vertical joint 20 is a joint of two outer wall panels 12 (outer wall panels 12A and 12B) that are laterally adjacent to each other in a state of being fixed to a building frame (not shown). ..

As shown in FIG. 2, a groove 14 is formed on one side end surface of the outer wall panel 12, and a ridge (so-called fruit (sane) 16) is formed on the other side end surface. The groove portion 14 and the ridge 16 are formed along the side end surface from the upper end to the lower end of the outer wall panel 12.

The groove wall 14A of the groove portion 14 is inclined in a direction away from each other from the groove bottom 14B toward the side end surface 12E of the outer wall panel 12. Further, the side wall 16A of the ridge 16 is inclined in a direction away from each other from the top surface 16B toward the side end surface 12E.

The outer wall panel 12 faces the outer wall panel 12A of the other outer wall panel 12B with respect to the groove portion 14 formed on the side end surface of one of the outer wall panels 12A adjacent to each other in a state of being fixed to the building frame (not shown). The ridges 16 formed on the side end faces are engaged and arranged.

As shown in FIG. 2, "engagement" means a state in which the side end faces 12E of each other and the groove wall 14A and the side wall 16A are in contact with each other, and also a protrusion with the groove portion 14 when the outer wall panels 12A and 12B are viewed from the front. It shall include a state in which a gap is opened between the outer wall panels 12A and 12B to the extent that the strip 16 overlaps.

(Vertical joint water blocking member)
With the groove 14 and the ridge 16 engaged, a vertical joint water blocking member 52 made of EPDM (ethylene propylene rubber) is held between the groove wall 14A and the side wall 16A in a compressed state. There is. The state before compression is shown by a broken line in FIG. In addition to EPDM, the vertical joint water blocking member 52 has various closed-cell properties such as CR (chloroprene) rubber, NR (natural rubber) rubber sponge, and NBR (acrytonitrile, butadiene) rubber. Elastic resin material can be used.

The vertical joint water blocking member 52 is arranged on the engaging surface between the groove wall 14A and the side wall 16A on the outdoor side (arrow OUT side in FIG. 2) when viewed from the center line CL of the outer wall panel 12. Further, the sealing material 42 (primary water blocking material 40) described above is arranged in the notch portion 18 formed on the outdoor side of the engaging surface.

As a result, the vertical joint 20 has a double stop having the sealing material 42 as the primary water blocking material 40 and the vertical joint water blocking member 52 as the secondary water blocking material on the outdoor side of the center line CL of the outer wall panel 12. A water structure is formed.

(Horizontal joint)
As shown in FIG. 1, the horizontal joint 30 is a seam of two outer wall panels 12 (for example, outer wall panels 12A and 12C) that are vertically adjacent to each other in a state of being fixed to a building frame (not shown).

In FIG. 3, the structures below the outer wall panels 12A and 12B in FIGS. 1 and 2, that is, the outer wall panels 12C and 12D and the internal structure of the horizontal joint 30 are shown in a plan view. Further, FIG. 4 shows an exploded perspective view of the outer wall panels 12C and 12D, the internal structure of the horizontal joint 30, and the outer wall panel 12B. In FIG. 4, the outer wall panel 12A and the sealing material 42 are not shown.

(Water receiving member)
As shown in FIG. 3, in the horizontal joint 30, an EPDM water receiving member 54 is arranged so as to surround the vertical joint water blocking member 52 from the indoor side and the side in a plan view. The water receiving member 54 is a horseshoe including a water receiving portion 54A arranged on the indoor side of the vertical joint water blocking member 52 and a water guiding portion 54B extending from both ends of the water receiving portion 54A toward the outdoor side. It is a water-stopping member with a shape. In FIG. 3, the boundary portion between the water receiving portion 54A and the water guiding portion 54B is represented by a two-dot chain line for convenience.

The water receiving member 54 is formed by cutting out a sheet-shaped EPDM into a horseshoe shape. As the material of the water receiving member 54, in addition to EPDM, various closed cell resins such as CR (chloroprene) rubber, NR (natural rubber) rubber sponge, and NBR (acrytonitrile, butadiene) rubber are used. Materials can be used.

As shown in FIG. 4, the end surface of the horizontal joint water blocking member 56 arranged along the horizontal joint 30 is abutted against the outer surface of the water guiding portion 54B of the water receiving member 54. The front surface (outdoor side surface) of the water guiding portion 54B and the side surface (outdoor side surface) of the horizontal joint water blocking member 56 are substantially flush with each other.

Further, the sealing material 44 (primary water blocking material 40) described above is arranged on the outdoor side of the water receiving member 54 and the horizontal joint water blocking member 56. The sealing material 44 is an amorphous sealing material (elastic sealing), and the water receiving member 54 and the horizontal joint water blocking member 56 function as backup materials. The sealing material 44 and the horizontal joint water blocking member 56 are arranged on the outdoor side of the center line CL of the outer wall panel 12.

As a result, the horizontal joint 30 is a double layer having the sealing material 44 as the primary water blocking material 40 and the horizontal joint water blocking member 56 as the secondary water blocking material on the outdoor side of the center line CL of the outer wall panel 12. A waterproof structure is formed.

(Fireproof joint material)
The horizontal joint 30 is further provided with a refractory joint material 60. The refractory joint material 60 is a non-combustible material formed by using a rock wool heat insulating plate, a ceramic fiber blanket, or the like, and is arranged indoors from the water receiving member 54 and the horizontal joint water blocking member 56.

(Action / effect)
According to the outer wall joint structure in the first embodiment, as shown in FIG. 2, the sealing material 42 is used as the primary water blocking material 40 on the outdoor side of the center line CL of the outer wall panel 12 of the horizontal joint 30, and the vertical joint water blocking is performed. A double water blocking structure is formed in which the member 52 is used as a secondary water stopping material. Therefore, the water stopping performance is higher than that of the single water stopping structure.

Further, in a state where the groove portion 14 and the ridge 16 are engaged with each other, a vertical joint water blocking member 52 is held between the groove wall 14A and the side wall 16A in a compressed state. Therefore, when the outer wall panels 12A and 12B move in a direction in which they are relatively separated (L direction or R direction in FIG. 2), the vertical joint water blocking member 52 approaches the original state, so that the groove wall 14A and the side wall 16A The state of contact is maintained. Further, even when the outer wall panels 12A and 12B move in relatively deviating directions (IN direction and OUT direction in FIG. 2), the vertical joint water blocking member 52 approaches the original state, so that the groove wall 14A and the side wall 16A The state of contact with is maintained. As a result, even if the outer wall panels 12A and 12B forming the wall body 10 move, the water stopping performance of the wall body 10 is unlikely to deteriorate.

Further, in the wall body 10, there may be a uneven gap between the outer wall panels 12 adjacent to each other in the lateral direction due to a construction error. The compressed vertical joint water blocking member 52 can follow such a dimensional error.

Further, according to the outer wall joint structure in the first embodiment, as shown in FIG. 3, the water receiving member 54 is arranged so as to surround the vertical joint water blocking member 52 from the indoor side and the side in a plan view. Therefore, for example, rainwater (W1) that has penetrated into the sealing material 42 (see FIGS. 1 and 2) and has flowed along the front side of the vertical joint water blocking member 52 as shown in FIG. 4 is discharged from the water receiving member 54. Also, the flow to the indoor side is suppressed (water stoppage).

Further, the rainwater stopped by the water receiving member 54 flows downward along the vertical joint between the outer wall panels 12C and 12D (W2). Further, rainwater can also flow laterally along between the horizontal joint water blocking member 56 and the sealing material 44 (W3).
In this way, the rainwater (W1) that has flowed along the vertical joint water blocking member 52 is stopped by the water receiving member 54 at the horizontal joint 30, and is unlikely to flow indoors.

Further, in the outer wall joint structure of the first embodiment, the water receiving member 54 is formed by cutting out a sheet-shaped EPDM into a horseshoe shape. By integrally molding the water receiving portion 54A and the water guiding portion 54B in this way, the water stopping property is enhanced as compared with the case where they are separately formed and bonded.

Further, according to the outer wall joint structure in the first embodiment, as shown in FIG. 2, the outer wall panel 12 is an ALC plate, and the groove portion 14 of one outer wall panel 12A is fixed to the building frame (not shown). The ridge 16 of the other outer wall panel 12B is engaged with the other (so-called “sane” structure). As a result, as compared with the case where the wall is formed by using, for example, an outer wall panel not provided with the groove portion 14 or the ridge 16, the flame shielding performance is high because there is no gap in the front view. Further, by engaging the groove portion 14 with the ridge 16, it is easy to align the outer wall panels 12A and 12B in the front-rear direction (OUT direction and IN direction).

[Second Embodiment]
In the description of the second embodiment, those having the same configuration as that of the first embodiment are designated by the same reference numerals and will be omitted as appropriate.

(Outer wall joint structure)
The outer wall joint structure in the second embodiment is a water blocking structure applied to the vertical joint 21 and the horizontal joint 31 of the outer wall panel 12 constituting the wall body 11 shown in FIG.

The wall body 11 has a joint configuration (horse joint) in which the vertical joint 21 is discontinuous between the upper and lower outer wall panels 12, and the horizontal joint 31 is stopped at the intersection E2 of the vertical joint 21 and the horizontal joint 31. The water-permeable sealing material 44 is used as a through material, and the sealing material 42 that stops water at the vertical joints 21 is abutted and adhered to the sealing material 44.

(Vertical joint)
The configuration of the vertical joint 21 in the second embodiment is the same as the configuration of the vertical joint 20 in the first embodiment as shown in FIG.

(Horizontal joint)
In FIG. 6, the structures below the outer wall panels 12A and 12B in FIGS. 2 and 5, that is, the outer wall panel 12F and the internal structure of the horizontal joint 31 are shown in a plan view. Further, FIG. 7 shows an exploded perspective view of the outer wall panel 12F, the internal structure of the horizontal joint 31, and the outer wall panel 12B. In FIG. 7, the outer wall panel 12A and the sealing material 42 are not shown.

(Water receiving member)
As shown in FIG. 7, in the water receiving member 58 at the horizontal joint 31, a bottom plate 58C is formed in a portion surrounded by the water receiving portion 58A and the water guiding portion 58B. The bottom plate 58C is a sheet-like member of PP (polypropylene) or CR (chloroprene), is welded to the water receiving portion 58A and the water guiding portion 58B, and is adhered to the upper surface of the outer wall panel 12F using butyl tape. ..

(Action / effect)
In the outer wall joint structure of the second embodiment, as shown in FIG. 5, the vertical joint 21 has a discontinuous joint configuration between the upper and lower outer wall panels 12. Therefore, the rainwater (W1) that has flowed along the vertical joint water blocking member 52 between the outer wall panel 12A (not shown) and the outer wall panel 12B shown in FIG. 7 cannot flow downward. Therefore, rainwater temporarily stays in the portion of the water receiving member 58 surrounded by the water receiving portion 58A and the water guiding portion 58B, but the bottom plate 58C is formed in the portion surrounded by the water receiving portion 58A and the water guiding portion 58B. Therefore, it is suppressed that the accumulated rainwater flows to the indoor side of the water receiving portion 58A.

Then, the rainwater flows laterally (W3) along between the horizontal joint water blocking member 56 and the sealing material 44, is discharged downward from the end of the outer wall panel 12F (not shown), and finally the wall body 11 It is discharged to the outside from the bottom of.

As described above, in the outer wall joint structure of the second embodiment, by forming the bottom plate 58C on the water receiving member 58, even in the wall body 11 in which the vertical joints 21 are discontinuous in the vertical direction as shown in FIG. The configuration can be such that the water stopping performance is not easily deteriorated.

The outer wall panel 12 in the first and second embodiments may be a part of a pillar. That is, the first outer wall material and the second outer wall material in the present invention refer to all exterior materials used for a vertical surface facing the outside.

Further, in the first and second embodiments, as shown in FIGS. 3 and 6, the water receiving members 54 and 58 and the horizontal joint water blocking member 56 are formed separately, and the horizontal joint water blocking member 56 is made of water. Although it is arranged so as to be abutted against the receiving members 54 and 58, the embodiment of the present invention is not limited to this. For example, the water receiving members 54 and 58 and the horizontal joint water blocking member 56 may be adhered to each other or integrally formed as one member. By doing so, there is no gap between the water receiving members 54 and 58 and the horizontal joint water blocking member 56, so that the water stopping property at the horizontal joint 30 is improved.

Further, although the outer wall panel 12 is an ALC plate in the first and second embodiments, the embodiment of the present invention is not limited to this. For example, a material having fireproof performance such as ECP (extruded cement board) can be used. Since the ECP has a reinforced structure, there is little deterioration due to the ingress of rainwater.

Further, in the wall bodies 10 and 11 in the first and second embodiments, it is not necessary to apply the vertical joint water blocking member 52 and the water receiving members 54 and 58 to all the vertical joints and all the horizontal joints. For example, the groove portion 14 and the ridge 16 may not be formed on the outer wall panel used for a portion joined to the orthogonal wall body at the end portion of the wall body 10 or an opening to which a window, an entrance or the like is attached. In such a place, rainwater may be stopped by an amorphous sealing material and a backer material arranged inside the amorphous sealing material.

Further, in the first and second embodiments, only the sealing material 42 is arranged in the cutouts 18 of the vertical joints 20 and 21 shown in FIG. 2, but the embodiment of the present invention is not limited to this. A backup material may be arranged on the indoor side of the sealing material 42. By arranging the backup material, the water stopping property of the sealing material 42 can be enhanced.

Further, in the first and second embodiments, the vertical joint water blocking member 52 shown in FIG. 2 is arranged between the groove wall 14A and the side wall 16A, but the embodiment of the present invention is not limited to this. For example, as in the vertical joint water blocking member 53 shown in FIG. 8, it may be arranged in a compressed state between the side end surfaces 12E of the outer wall panels 12A and 12B, respectively.

Even if the vertical joint water blocking member 53 is arranged in this way, when the outer wall panels 12A and 12B move in relatively distant directions (L direction or R direction in FIG. 8), the compressed vertical joint water blocking member 53 As the surface approaches the original state, the state of contact with the side end faces 12E of the outer wall panels 12A and 12B is maintained. Therefore, the vertical joint water blocking member 53 and the side end faces 12E of the outer wall panels 12A and 12B There are few gaps between them. Further, even when the outer wall panels 12A and 12B move in the directions in which the side end faces 12E deviate from each other (in and OUT directions in FIG. 8), the compressed state of the vertical joint water blocking member 53 is maintained, so that the vertical joints A gap is unlikely to occur between the water blocking member 53 and the side end faces 12E of the outer wall panels 12A and 12B.

12A outer wall panel (first outer wall material)
12B outer wall panel (second outer wall material)
12E Side end face 14 Groove 14A Groove wall 16 Protrusion 30 Horizontal joint 31 Horizontal joint 52 Vertical joint water stop member 53 Vertical joint water stop member 54 Water receiving member 54A Water receiving part 54B Water conducting part 56 Horizontal joint water blocking member 58 Water receiving member 58A Water receiving part 58B Water conducting part 58C Bottom plate

Claims (6)

A plate-shaped first outer wall material in which a groove having an inclined groove wall is formed along the side end face, and
A plate-shaped second outer wall material in which a ridge engaging with the groove is formed along the side end surface facing the side end surface, and
A vertical joint stop made of an elastic material, arranged in a compressed state between the groove wall and the ridge, and water-stopping between the outside and the inside of the first outer wall material and the second outer wall material. Water member and
Between the first outer wall material and the second outer wall material, an amorphous sealing material provided on the outdoor side of the vertical joint water blocking member and
A water receiving member arranged in a horizontal joint formed below the first outer wall material and the second outer wall material, and receiving the flowing water flowing through the vertical joint water blocking member and flowing to the outside.
With
The water receiving member has an outer wall joint structure in which the entire water receiving member is arranged inside the horizontal joint in a plan view. A plate-shaped first outer wall material having grooves formed along the side end faces,
A plate-shaped second outer wall material in which a ridge engaging with the groove is formed along the side end surface facing the side end surface, and
It is made of an elastic material and is arranged in a compressed state between the side end surface of the first outer wall material and the side end surface of the second outer wall material, and is arranged outside the first outer wall material and the second outer wall material. Vertical joint water stop member that stops water between the inside and the inside,
Between the first outer wall material and the second outer wall material, an amorphous sealing material provided on the outdoor side of the vertical joint water blocking member and
A water receiving member arranged in a horizontal joint formed below the first outer wall material and the second outer wall material, and receiving the flowing water flowing through the vertical joint water blocking member and flowing to the outside.
With
The water receiving member has an outer wall joint structure in which the entire water receiving member is arranged inside the horizontal joint in a plan view. The water receiving member includes a water receiving portion arranged on the indoor side of the vertical joint water blocking member in a plan view, and a water guiding portion extending from both ends of the water receiving portion toward the outdoor side. The outer wall joint structure according to claim 1 or 2. In the water receiving member, a bottom plate is formed in a portion surrounded by the water receiving portion and the water conducting portion, and an end surface of a horizontal joint water blocking member arranged along the horizontal joint abuts against the outer surface of the water conducting portion. The outer wall joint structure according to claim 3. The outer wall joint structure according to claim 3 or 4 , wherein the water receiving member and the water conducting portion are integrally molded of a closed cell resin material. The one according to any one of claims 1 to 4 , wherein a horizontal joint water blocking member is abutted against the water receiving member, and a sealing material is arranged on the outdoor side of the horizontal joint water blocking member. Outer wall joint structure.