JP2011157707A - Double waterproof structure of exterior wall joint, and method for constructing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double waterproof structure 1 of an exterior wall joint, which can be attached to a vertical joint between exterior wall panels 2 from an outdoor side, can be properly used even in the case of a change in the thickness of the exterior wall panel 2 and makes an attachment operation relatively easy; and to provide a method for constructing the double waterproof structure 1. <P>SOLUTION: This double waterproof structure 1 of the exterior wall joint includes: a primary elastic seal member 5 in a longitudinal shape, which is pressed into the vertical joint between the exterior wall panels 2 and disposed throughout the height of the vertical joint; a plurality of approximately U-shaped cross-section clip members 6 which are fitted at intervals to a protruding strip 53 formed on the indoor side of the primary seal member 5; and a second waterproof member 7 which comprises an approximately U-shaped cross-section storage portion 71 fixed while externally fitted to the clip member 6 and a body portion 72 having the storage portion 71 fixed to the center and having both ends stretched to form a fin 74 brought into watertight pressure contact with an indoor-side edge of the exterior wall panel 2, and which is disposed throughout the height of the vertical joint. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a double waterproof structure for an outer wall joint that prevents water from entering the indoor side from a vertical joint between outer wall panels, and a construction method for the double waterproof structure for the outer wall joint.

  Conventionally, dry outer wall joint gaskets are used to prevent wind and rain from entering the building from joints formed between a plurality of adjacent outer wall panels and to maintain a good appearance of the building. The outer wall joint gasket is formed of a material having watertightness and elasticity, such as polyvinyl chloride, and has a longitudinal shape slightly wider than the joint width, and is press-fitted and fixed to the joint from the outdoor side.

  In such an outer wall joint gasket, in order to further improve the waterproof property, for example, as shown in FIG. 12 (A), a base joint formed by standing an opposing vertical plate on the bottom plate portion to form a fitting groove. The material 101 and the ridge 103 inserted into the fitting groove 106 of the base joint material 101 are suspended from the cylindrical hollow seal portion 104, and a silicon-based coating layer is formed on the seal surface of the seal portion 104, And the outer wall joint gasket 100 which consists of the top joint material 102 formed by thickening the lower end part of the seal part 104 according to joint joint width is proposed (refer patent document 1).

  With this configuration, the outer wall joint gasket 100 has the base joint member 101 in contact with the back surface 105a of the outer wall panel 105 in addition to the primary waterproofing due to the waterproofness of the seal portion 104, as shown in FIG. By closely contacting, secondary waterproofing can be performed, and the waterproofing effect can be further enhanced.

JP 2003-74130 A

  However, in the outer wall joint gasket 100 as described above, since the base joint member 101 is attached from the indoor side of the building, the base material, the outer wall panel mounting bracket, etc. disposed on the indoor side of the outer wall panel 105 are obstructive. Therefore, it is often difficult to attach the base joint material 101, and it is impossible to attach the base joint material 101 because the interior material is fixed as in the case of reforming the outer wall. There was also a case.

  In addition, since the fitting groove 106 of the base joint material 101 and the convex stripe 103 of the top joint material 102 are formed over the entire height of the vertical joint, the operation of fitting the convex stripe 103 into the fitting groove 106 is also performed on the vertical joint. It was necessary to carry out the entire height, and it took time and effort.

  Further, since the outer wall joint gasket is formed from two members, the base joint member 101 and the top joint member 102, when the thickness of the outer wall panel 105 is changed, it is necessary to change the design of these two members. Therefore, there has been a demand for a member that is easier to reuse.

  Therefore, the present invention can be attached to the vertical joint between the outer wall panels from the outdoor side, and is easy to use even when the thickness of the outer wall panel is changed. It aims at providing a heavy waterproof structure and its construction method.

  The double waterproof structure of the outer wall joint according to claim 1 includes a primary seal member having a longitudinal shape having elasticity and press-fitted over almost the entire height of the vertical joint between the outer wall panels. A plurality of clip members each having a substantially U-shaped cross-section that are fitted on a longitudinally long ridge formed on the inside with a space in the vertical direction, and a cross-section that is externally fitted and fixed to the clip member. The vertical height of the vertical joint has a U-shaped storage portion fixed at the center thereof and an elastic body having a fin that is watertightly pressed against the indoor side edge of the outer wall panel at both ends thereof. And a secondary waterproofing member arranged over the area.

  The double waterproof structure of the outer wall joint according to claim 2 is characterized in that the storage portion is higher in rigidity than the main body portion.

  The double waterproof structure of the outer wall joint according to claim 3 is formed such that a tip of the fin is branched, and one of the tips contacts the small edge surface of the outer wall panel, and the other of the tips is the It is characterized by being in contact with the indoor side surface of the outer wall panel.

  The double waterproof structure construction method for the outer wall joint according to claim 4 includes: a storage portion having a substantially U-shaped cross section; and a storage portion fixed at the center with the opening side facing the outdoor side, and both ends are spread. A secondary waterproofing member having a main body part that forms a vertical joint between the outer wall panels from the outdoor side, is held across the entire height of the vertical joint, and is held on the indoor side of the vertical joint. The primary seal member from the outdoor side to the vertical joint in a state in which a plurality of clip members having a substantially U-shaped cross section are fitted at predetermined intervals on the ridge formed on the long-form primary seal member having slightly wider elasticity. Is inserted over the entire height of the vertical joint, and a clip member fitted to the ridge is inserted into the storage portion and fixed.

  The double waterproof structure construction method for outer wall joints according to claim 5 has a substantially U-shaped cross section on the ridge formed on the longitudinal primary seal member having elasticity that is slightly wider than the vertical joint between the outer wall panels. Secondary waterproofing having a plurality of clip members fitted at predetermined intervals, and then a storage portion having a substantially U-shaped cross section, and a main body portion in which the storage portion is fixed at the center and both ends expand to form fins The housing portion of the member is externally fitted and fixed to the clip member to form a double waterproof member, and the double waterproof member is placed on the secondary waterproof member side from the outdoor side to the vertical joint over its entire height. The secondary waterproof member is inserted on the indoor side of the vertical joint, and the primary seal member is press-fitted into the vertical joint.

  According to the secondary waterproof member of the outer wall joint according to claim 1, since the primary seal member has elasticity and the main body of the secondary waterproof member is made of an elastic body, the primary seal member and the secondary waterproof member are elastically deformed. It can be attached to the vertical joint between the outer wall panels from the outdoor side. Also, since the primary seal member and the secondary waterproof member are fixed via the clip member, the primary seal member and the secondary waterproof member can be changed to change the outer wall variation, such as when changing the thickness of the outer wall panel. It is possible to cope with this by changing the specifications of some of the clip members, and it is easy to use them for various types of outer walls.

  In addition, the primary seal member and the secondary waterproof member are arranged over the entire height of the vertical joint, and a plurality of clip members are arranged at the necessary locations, ensuring reliable waterproofing due to the double waterproof structure. In addition, since the primary seal member and the secondary waterproof member only need to be connected at the place where the clip member is arranged at the time of construction, the construction becomes easier as compared to the case of connecting over the entire height of the vertical joint.

  According to the secondary waterproof member of the outer wall joint according to claim 2, the main body portion of the secondary waterproof member is formed of an elastic body, and the storage portion is higher in rigidity than the main body portion. The fins extending to the inner wall press against the indoor side edge of the outer wall panel to exert a secondary waterproof function, and can be reliably connected to the primary seal member via the clip member by the highly rigid storage portion. Further, since the storage portion is highly rigid, the rising portion of the storage portion having a substantially U-shaped cross section serves as a rib, and the secondary waterproof member can be reinforced.

  According to the secondary waterproofing member of the outer wall joint according to claim 3, the tip of the fin formed in the main body of the secondary waterproofing member is branched and formed, one of which contacts the small edge of the outer wall panel. Since the other is in contact with the indoor side surface of the outer wall panel, the portion of the secondary waterproofing member that comes into contact with the outer wall panel further prevents water from entering double from the outside, and can be more reliably waterproofed. . Moreover, even if the outer wall joint width slightly changes within the range of construction accuracy, it can be surely waterproofed by contacting the small edge surface of the outer wall panel and the indoor side surface of the outer wall panel.

  According to the double waterproof structure construction method of the outer wall joint according to claim 4, the clip member is fitted after the secondary waterproof member is first inserted into the vertical joint between the outer wall panels and held on the indoor side of the vertical joint. Since the primary seal member is pressed into the vertical joint, it is possible to visually confirm whether the secondary waterproof property is secured when the secondary waterproof member is inserted. It can be secured.

  According to the double waterproof structure construction method for an outer wall joint according to claim 5, after forming the double waterproof member through the clip member between the primary seal member and the secondary waterproof member, the vertical joint covers the entire height. Since this double waterproof member is inserted, if the double waterproof member is formed in advance, then the outer wall joint is formed by only one step of inserting the double waterproof member into the vertical joint of the outer wall. The double waterproof structure can be constructed, and the construction becomes extremely easy.

The abbreviated sectional view explaining the whole double waterproofing structure of an outer wall panel, and its partial abbreviation enlarged drawing. Sectional drawing and abbreviated perspective view explaining the structure of a primary seal member. The side view and perspective view explaining the structure of a clip member. Sectional drawing and abbreviated perspective view explaining the structure of a secondary waterproofing member. The abbreviated sectional view showing the process of fixing the outer wall panel to the shaft assembly. The abbreviated sectional view explaining the state where the secondary waterproofing member is inserted into the vertical joint. Sectional drawing explaining the state which makes a clip member externally fit to the protruding item | line of a primary seal member. The abbreviated sectional view for explaining the state where the primary seal member with the clip member fitted on the ridge is inserted into the vertical joint. The abbreviated sectional view explaining the whole composition of the double waterproofing structure of an outer wall panel at the time of forming an outer wall panel thickly, and the 1 part omitted perspective view. Sectional drawing explaining the state which connects a primary seal member, a clip member, and a secondary waterproof member, and forms a double waterproof member. The partially abbreviate | omitted sectional drawing explaining the state which inserts a double waterproof member in a vertical joint. The figure which shows an example of the outer wall joint gasket used for the conventional vertical joint waterproofing.

  Hereinafter, the best embodiment of the double waterproof structure 1 of an outer wall joint and its construction method will be described with reference to the drawings. As shown in FIG. 1, the outer wall in which the double waterproof structure 1 of the outer wall joint is used is configured by fixing a plurality of outer wall panels 2 to a shaft assembly 3 constituting a structural frame of a building using an outer wall panel mounting bracket 4. It is formed. The outer wall panel 2 is, for example, a resin-based, cement-based, ceramic-based, or metal-based siding material formed in a rectangular flat plate shape. A metal frame 21 having a C-shaped cross section is attached to the indoor side of the periphery of the outer wall panel 2 so as to open the joint wall in a joint direction in order to fix the outer wall panel 2 to a beam or a column of a building.

  An outer wall panel mounting bracket 4 for fixing the outer wall panel 2 to the shaft set 3 is fixed to the shaft set 3 and is fixed to the base set 41 so as to rotate from the shaft set 3 in an outdoor direction and to be rotatable about the base 41. And a panel fixing portion 42 that holds the metal frame 21 of the outer wall panel 2 between the shaft assembly 3 and an operation portion 43 that rotates the panel fixing portion 42. When fixing the outer wall panel 2, the metal frame 21 of the outer wall panel 2 is pressed against the shaft assembly 3, the operation part 43 of the outer wall panel mounting bracket 4 is operated, and the panel fixing part 42 is rotated to fix the panel. The metal frame 21 of the outer wall panel 2 is sandwiched and fixed between the portion 42 and the shaft assembly 3. At this time, the operation unit 43 is configured to be located in the back of the vertical joint between the outer wall panels 2. Therefore, by operating while inserting a tool such as a screwdriver into the joint from the outdoor side, the outer wall panel 2 can be attached from the outdoor side, and the outer wall panel 2 can be removed from the outdoor side during renovation and the like. Can do.

  The double waterproof structure 1 of the outer wall joint is arranged in such a vertical joint between the outer wall panels 2, and rainwater or the like enters the indoor side of the building through the vertical joint between the outer wall panels 2. This is to prevent this. As shown in FIG. 1, the double waterproof structure 1 of the outer wall joint is fitted to a primary seal member 5 that is press-fitted into a vertical joint between the outer wall panels 2 and a ridge 53 formed on the primary seal member 5. A plurality of clip members 6 and a secondary waterproofing member 7 that is fitted on the clip member 6 and arranged on the indoor side of the vertical joint.

  The primary seal member 5 is formed of, for example, a polyolefin-based elastic resin in which polypropylene and rubber are mixed. As shown in FIG. 2, a lid portion 51 that becomes the outdoor side when pressed into a vertical joint, and the lid portion A seal portion 52 formed to be slightly wider than the joint width of the vertical joint from 51 to the indoor side, and a ridge 53 formed to bulge from the center of the seal portion 52 to the indoor side. is doing. The seal portion 52 is formed with a plurality of flanges 54 formed laterally and a plurality of cavities 55 provided in a tubular shape, and when the primary seal member 5 is press-fitted into the vertical joint between the outer wall panels 2. While being elastically deformed, it is in close contact with the facet of the outer wall panel 2 so that the vertical joint can be sealed. Further, a metal plate-like shape holding portion 56 is accommodated in the center of the seal portion 52, and the shape of the primary seal member 5 is held so that the vertical joint can be reliably sealed.

  The clip member 6 is a metal fitting formed by bending and processing a single metal plate, and the side portions are bent and rise to a size that can accommodate the protrusions 53 of the primary seal member 5 inside. It is formed in a substantially U shape. As shown in FIG. 3, the rising portions on both sides are configured to be separated into three parts, and the locking pieces 61 are formed so that the center thereof is slightly spread outward. And the hook part 62 which the front-end | tip bent inside is formed in the both sides of this latching piece 61. As shown in FIG. When the clip member 6 is externally fitted to the ridge 53 of the primary seal member 5, the flange portion 62 is formed so as to be hooked on the ridge 53, thereby preventing the clip member 6 from dropping from the primary seal member 5. ing.

  The secondary waterproofing member 7 includes a storage portion 71 having a substantially U-shaped cross section formed in a size that can be externally fitted to the clip member 6, and a flat main body 72 having the storage portion 71 fixed to the center by bonding or the like. And having. The storage portion 71 is formed of a resin whose rigidity is increased by mixing talc into polypropylene, and a claw portion 73 that protrudes slightly inward is formed at the tip. In this way, the storage portion 71 is formed of a relatively high-rigidity resin and rises in a U shape, so that the raised portion can serve as a rib and reinforce the secondary waterproof member 7. . When the clip member 6 is stored in the storage part 71, the clip member 6 can be fixed by the catch piece 61 spreading slightly outside the clip member 6 being hooked on the claw part 73 of the storage part 71. The main body 72 is made of an elastic resin such as polypropylene or a resin obtained by mixing polypropylene and rubber. The main body 72 is formed in a flat plate shape at the center to which the storage portion 71 is bonded, and the ends on both sides are slightly bent to form fins 74. And this fin 74 is branched and formed in the indoor side and the outdoor side. When the secondary waterproofing member 7 is held on the indoor side of the vertical joint between the outer wall panels 2, the outdoor-side fin 74 a out of the branched fins 74 is in watertight contact with the small edge surface of the outer wall panel 2, and the indoor side The fin 74b is in watertight contact with the indoor side surface of the outer wall panel 2 and exhibits a waterproof function.

  When constructing the double waterproof structure configured as described above, first, as shown in FIG. 5, the outer wall panel 2 is fixed to the frame 3 of the building. Specifically, the outer wall panel mounting bracket 4 is attached to the shaft assembly 3, and the indoor side surface of the metal frame 21 of the outer wall panel 2 is brought into contact with the shaft assembly 3. Then, the panel fixing portion 42 is rotated by operating the operation portion 43 of the outer wall panel mounting bracket 4, and the panel fixing portion 42 is brought into contact with the outdoor side surface of the metal frame 21. The metal frame 21 is clamped and fixed.

  Then, as shown in FIG. 6, the secondary waterproof member 7 is housed in the indoor side through the vertical joint from the outdoor side over the entire height of the vertical joint. The secondary waterproofing member 7 is disposed on the indoor side of the vertical joint without falling off the indoor side because the outer wall panel mounting bracket 4 is provided on the indoor side of the vertical joint. The secondary waterproofing member 7 is slightly wider than the joint width of the vertical joint, but can be inserted into the vertical joint by elastically deforming the main body 72 of the secondary waterproofing member 7. With the restoring force of the section 72, the outdoor side fin 74a is in watertight pressure contact with the small face of the outer wall panel 2 while the secondary waterproofing member 7 is held on the indoor side of the vertical joint, and the indoor side fin 74b The outer wall panel 2 can be in watertight contact with the indoor side surface. Thus, by inserting only the secondary waterproof member 7 into the indoor side of the vertical joint first, the construction worker can confirm the construction status of the secondary waterproof member 7 from the outdoor side, and the secondary waterproof member 7 can be confirmed that the fins 74 are in close contact with the outer wall panel 2 and are reliably waterproofed.

  Next, as shown in FIG. 7, the clip member 6 is externally fitted to the ridge 53 of the primary seal member 5 at a predetermined interval. And as shown in FIG. 8, the primary seal member 5 in the state where the clip member 6 is externally fitted to the ridge 53 is press-fitted from the outdoor side over the entire height of the vertical joint. At this time, the seal portion 52 of the primary seal member 5 is elastically deformed and fixed at an intermediate position of the vertical joint. At this time, the ridge 53 of the primary seal member 5 having the clip member 6 fitted thereto is inserted into and fixed to the storage portion 71 of the secondary waterproofing member 7 held on the indoor side of the vertical joint. The locking piece 61 where the clip member 6 rises slightly spreads outward, and the clip member 6 is stored in the storage portion 71 by being caught by a claw portion 73 formed to protrude slightly inward from the tip of the storage portion 71. It will be fixed in the state. As a result, the primary seal member 5 and the secondary waterproof member 7 are connected to each other, so that the primary seal member 5 can be prevented from falling off, and the position of the secondary waterproof member 7 is shifted to reduce the waterproof property. Can be prevented.

  Thus, since the double waterproof structure 1 of the constructed outer wall joint can perform double waterproofing of the primary waterproofing by the primary seal member 5 and the secondary waterproofing by the secondary waterproofing member 7, the outdoor side Can prevent rainwater from entering. Since the primary seal member 5 and the secondary waterproof member 7 are arranged over the entire height of the vertical joint between the outer wall panels 2, the primary seal member 5 and the secondary waterproof member 7 can be reliably waterproofed, and a plurality of clip members 6 are installed at positions that need to be fixed at predetermined intervals. Therefore, the construction is easier than the case of fixing over the entire height of the vertical joint. Further, since the seal portion 52 of the primary seal member 5 and the main body portion 72 of the secondary waterproof member 7 are formed of an elastic resin, the primary seal member 5 and the secondary waterproof member 7 are elastically deformed from the outdoor side. It can be attached to the vertical joint between the outer wall panels 2.

  Moreover, since the fin 74 formed in the main-body part 72 of the secondary waterproof member 7 branches, and each abuts on the small surface and the indoor side surface of the outer wall panel 2, the part which contact | connects the outer wall panel 2 of the secondary waterproof member 7 further In addition to preventing double entry of water from the outside, waterproofing can be ensured even if the outer wall joint width slightly changes within the range of construction accuracy.

  Further, when the outer wall panel 2 becomes thicker as shown in FIG. 9, for example, as shown in FIG. 9, the clip member is constituted by the three members of the primary seal member 5, the clip member 6, and the secondary waterproof member 7. 6 can be used without changing the shapes of the primary seal member 5 and the secondary waterproofing member 7 simply by forming the flange portion 62 of the rising portion 6 long. Moreover, when the outer wall panel 2 becomes thin, it can be used without changing the shape of another member, for example, only by thinning the shape of the secondary waterproofing member 7. By dividing into three members in this way, when changing the variation of the outer wall panel 2, the specification of a part of the primary seal member 5, the secondary waterproof member 7, and the clip member 6 is changed. It is easy to use for the outer wall of various variations.

  Next, another construction method of the double waterproof structure 1 of the outer wall joint will be described. In this another construction method, first, as shown in FIG. 10, the primary sealing member 5, the clip member 6, and the secondary waterproofing member 7 are connected in advance before being inserted into the vertical joint, so that the double waterproofing member 8 is provided. Is formed. That is, the clip member 6 is externally fitted to the convex strip 53 of the primary seal member 5 at a predetermined interval, and the convex strip 53 having the clip member 6 externally fitted is stored in the storage portion 71 of the secondary waterproof member 7. The primary seal member 5, the clip member 6, and the secondary waterproof member 7 are connected. At this time, the hook 62 formed on the clip member 6 is hooked on the protrusion 53 of the primary seal member 5 and is securely fixed, and the locking piece 61 extending slightly outside the clip member 6 is a secondary waterproof member. 7 is hooked on the claw portion 73 formed in the storage portion 71 and is securely fixed.

  And next, as shown in FIG. 11, the double waterproof member 8 connected as described above from the outdoor side to the vertical joint between the outer wall panels 2 formed by fixing the outer wall panel 2 to the shaft assembly 3. Is inserted from the secondary waterproofing member 7 side. At this time, the main body 72 of the secondary waterproofing member 7 formed wider than the vertical joint and the seal portion 52 of the primary seal member 5 are elastically deformed and enter the vertical joint. And the fin 74 formed in the main body part 72 of the secondary waterproofing member 7 is the state where the secondary side waterproof member 7 is held on the indoor side of the vertical joint by the restoring force of the main body part 72, and the outdoor side fin 74 a While being in watertight pressure contact with the small face of the panel 2, the indoor side fin 74 b is in watertight pressure contact with the indoor side surface of the outer wall panel 2.

  When constructed in this way, the double waterproof structure 1 of the outer wall joint can be constructed by only one step of inserting the double waterproof member 8 into the vertical joint of the outer wall, and the construction becomes extremely easy. In addition, when constructing in this way, the primary seal member 5, the clip member 6, and the secondary waterproof member 7 may be integrally formed in advance in a factory that manufactures residential building materials, for example, or the primary seal member 5 The clip member 6 may be integrally formed.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The double waterproof structure 1 of the outer wall joint and the double waterproof structure construction method of the outer wall joint according to the present invention are the double waterproof structure 1 of the outer wall joint and the outer wall joint that can more reliably waterproof the vertical joint of the outer wall. It can be suitably used as a double waterproof structure construction method.

DESCRIPTION OF SYMBOLS 1 Double waterproof structure of outer wall joint 2 Outer wall panel 5 Primary seal member 6 Clip member 7 Secondary waterproof member 8 Double waterproof member 53 Convex strip 71 Storage part 72 Main body part 74 Fin

Claims (5)

A longitudinally-shaped primary seal member having elasticity, which is press-fitted and arranged over almost the entire height of the vertical joint between the outer wall panels;
A plurality of clip members having a substantially U-shaped cross-section that are fitted on the longitudinally long protrusions formed on the indoor side of the primary seal member at intervals in the vertical direction;
An elastic body having a fin having a substantially U-shaped cross-section fixed to the clip member and fixed to the center of the clip member, and having fins that are watertightly pressed against the indoor side edge of the outer wall panel at both ends thereof. A secondary waterproofing member disposed over the entire height of the vertical joint,
The double waterproof structure of the outer wall joint characterized by comprising.   2. The double waterproof structure for an outer wall joint according to claim 1, wherein the storage portion is higher in rigidity than the main body portion.   The tip of the fin is formed by branching, and one end of the tip abuts on a small edge surface of the outer wall panel, and the other end of the tip abuts on an indoor side surface of the outer wall panel. The double waterproof structure of the outer wall joint according to claim 1 or 2. A secondary waterproofing member having a storage portion having a substantially U-shaped cross section and a body portion that fixes the storage portion in the center with the opening side facing the outdoor side and has both ends spread to form fins, from the outdoor side Insert it across the entire height of the vertical joint between the outer wall panels and hold it on the indoor side of the vertical joint,
Next, in a state in which a plurality of clip members having a substantially U-shaped cross section are fitted at predetermined intervals on the ridge formed on the longitudinal primary seal member having elasticity that is slightly wider than the vertical joint, from the outdoor side, A method for constructing a double waterproof structure for an outer wall joint, wherein the primary seal member is press-fitted to the vertical joint over the entire height of the vertical joint, and a clip member fitted to the convex strip is inserted into the storage portion and fixed. . A plurality of clip members having a substantially U-shaped cross-section are fitted at predetermined intervals on the ridge formed on the longitudinal primary seal member having elasticity slightly wider than the vertical joint between the outer wall panels,
Next, the storage portion of the secondary waterproof member having a storage portion having a substantially U-shaped cross section and a main body portion in which the storage portion is fixed at the center and both ends are widened to form fins is removed from the clip member. Fit and fix to form a double waterproof member,
The double waterproof member is inserted into the vertical joint from the outdoor side over the entire height in order from the secondary waterproof member side to hold the secondary waterproof member on the indoor side of the vertical joint, and the primary seal member A method for constructing a double waterproof structure for an outer wall joint, characterized by press-fitting into the vertical joint.

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