JP2007217946A - Waterproof construction of joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof construction of a joint capable of ensuring waterproofing property of an intersection of a vertical joint and a horizontal joint without impairing the external appearance. <P>SOLUTION: The waterproof construction of the joint is so constituted that the intersection M of the vertical joint and the horizontal joint formed by exterior wall structural bodies (the first to the fourth exterior wall structural bodies) arranged up and down and right and left is waterproofed by waterproof sheets 10a and 10b, the waterproof sheets 10a and 10b is formed of a flexible sheet and that the first rectangular waterproofing area 11 and the second waterproofing area 12 projected from one side of the first waterproofing area 11 are included. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joint waterproof structure that waterproofs joints formed between outer wall structures of a building.

In recent years, as a construction method of a building, a method of forming an outer wall by arranging an outer wall structure including a casing and an outer wall member attached to the casing is widely spread. In this construction method, the outer wall structures are usually fixed with a space therebetween, and joints are formed between the outer wall structures. This joint communicates indoors and outdoors, and rain or the like infiltrates indoors as it is, and therefore, a waterproof measure is taken to prevent the entry of rain and the like.
In vertical and horizontal joints, caulking materials and gaskets may be filled for waterproofing, but at the intersections where vertical joints and horizontal joints cross, caulking materials and gaskets are filled to ensure waterproofness. It was difficult. Therefore, there is a demand for a waterproof structure that ensures waterproofness at the intersection.

FIG. 18 shows a conventional example of a waterproof structure for waterproofing joints formed by arranging outer wall structures side by side vertically and horizontally. Here, the outer wall structure disposed below and including the casing 111 and the outer wall material 112 is referred to as an outer wall structure 110 for the lower floor, and is disposed on the outer wall including the casing 121 and the outer wall material 122. The structure is called the upper floor outer wall structure 120, the vertical joint between the lower floor outer wall structures 110, 110 is the lower floor vertical joint V ₁ , and the vertical joint between the upper floor outer wall structures 120, 120 is the vertical joint. that above Kaitate joint V _2.
In this conventional example, the lower floor vertical joint V ₁ is closed and sealed with the lower floor vertical joint waterproof sheets 130 and 130, and the upper floor vertical joint V ₂ is closed and waterproofed with the upper floor vertical joint waterproof sheets 140 and 140. .
Specifically, as the lower Kaitate tarp 130 for joint is disposed below Kaitate joint V _1, between the skeleton 111 and the outer wall member 112 of the lower floor for the outer wall structure 110, Shitakaitate One edge in the width direction of the joint waterproof sheet 130 is attached. Then, the other edges of the lower floor vertical joint waterproof sheets 130 and 130 are joined to block the lower floor vertical joint V ₁ and waterproof. Similarly, the upper floor vertical joint waterproof sheet 140 is disposed on the upper floor vertical joint V ₂ , so that the upper floor vertical joint is between the housing 121 and the outer wall material 122 of each upper floor outer wall structure 120. One edge of the waterproof sheet 140 in the width direction is attached. And the other edges of these upper-floor vertical joint waterproof sheets 140 and 140 are joined, and the upper-floor vertical joint V ₂ is closed and waterproofed.

Further, a vertical joint (lower floor vertical joint V ₁ , upper floor vertical joint V ₂ ) and horizontal joint H ₁ , between the housing 121 of each upper floor outer wall structure 120 and the upper floor vertical joint waterproof sheet 140, one edge of the rectangular cross-section for the waterproof sheet 150 covering the intersection M of H ₂ is sandwiched. The intersection waterproof sheet 150 is arranged from the back side of the upper floor vertical joint waterproof sheet 140 to the surface of the lower floor outer wall structure 110. The intersection waterproof sheets 150 and 150 are joined together to waterproof the intersection M.
In addition, a long rectangular waterproof sheet 160 for the horizontal joint is provided from the lower end side between the casing 121 and the outer wall material 122 of the outer wall structure 120 for the upper floor to the surface of the outer wall material 112 of the outer wall structure 110 for the lower floor. Installed, the horizontal joints H ₁ and H ₂ are closed and waterproof.

In the waterproof structure, the waterproof sheet 150 for the intersection is attached to the surface of the outer wall material 112 of the lower floor outer wall structure 110, and the lower floor vertical joint waterproof sheet 130 is the outer wall material 112 of the lower floor outer wall structure 110. Since it was attached to the back surface, the back surface of the waterproof sheet for intersection 150 and the surface of the waterproof sheet for lower floor vertical joint 130 were separated by the thickness of the outer wall material. As a result, a gap is easily formed between the waterproof sheet for intersection 150 and the waterproof sheet for lower floor vertical joint 130. In particular, the joined waterproof sheets for intersection 150, 150 are folded and joined in the lower floor vertical joint V ₁ . In the case of being housed in, the gap X tends to occur in the folded portion. In the case of wind and rain, since rain blows into the indoor side through the gap X, the waterproof property was low.

Moreover, if the lower end of the crossover waterproof sheet is extended downward and the overlapping portion with the lower floor vertical joint waterproof sheet is lengthened, it is considered that the blowing of rain from the gap can be suppressed. However, in that case, when the horizontal joint is covered with a cosmetic molding for the purpose of improving the appearance, there is a problem that the lower end of the waterproof sheet for the intersection part protrudes from the cosmetic molding and impairs the appearance.
As described above, in the conventional waterproof structure, it is difficult to ensure the waterproof property at the intersection of the vertical joint and the horizontal joint without impairing the appearance.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a waterproof structure for joints that can ensure waterproofness at the intersections between the vertical joints and the horizontal joints without impairing the appearance.

The present invention includes the following configurations.
[1] A first outer wall structure, a second outer wall structure installed on one small edge side of the first outer wall structure, and a third outer wall structure installed on the first outer wall structure The intersection of the vertical joint and the horizontal joint formed by the body and the fourth outer wall structure installed on the second outer wall structure is waterproofed by the first waterproof sheet and the second waterproof sheet. A waterproof structure for joints,
The first to fourth outer wall structures have a casing and an outer wall material attached to the casing,
The first waterproof sheet and the second waterproof sheet are made of a flexible sheet, and have a rectangular first waterproof area and a second waterproof area protruding from one side of the first waterproof area. ,
The 1st waterproof sheet is the 2nd outer wall structure side of the back of the outer wall material which constitutes the 3rd outer wall structure so that the 2nd waterproof area neighborhood part in the 1st waterproof area may be arranged at an intersection. The first waterproof region of the first waterproof sheet is attached, and the non-adjacent portion of the first waterproof region that is not adjacent to the second waterproof region at the edge of the second waterproof region is the first outer wall. Attached to the surface of the structure, the edge on the non-adjacent portion side in the second waterproof region and along the protruding direction is attached to the edge of the first outer wall structure,
The 2nd waterproof sheet is the 1st outer wall structure side of the back of the outer wall material which constitutes the 4th outer wall structure so that the 2nd waterproof area neighborhood part in the 1st waterproof area may be arranged at an intersection. The first waterproof region of the second waterproof sheet is attached, and the non-adjacent portion not adjacent to the second waterproof region at the edge of the second waterproof region in the first waterproof region is the first outer wall Attached to the surface of the structure, the edge on the non-adjacent portion side in the second waterproof region and along the protruding direction is attached to the edge of the first outer wall structure,
A waterproof structure for a joint, wherein the first waterproof sheet and the second waterproof sheet are joined.

[2] The waterproof structure for joints according to [1], in which the lower floor vertical joint between the first outer wall structure and the second outer wall structure is a long rectangular first Waterproofed by the lower floor vertical joint waterproof member and the second lower floor waterproof member, the upper floor vertical joint between the third outer wall structure and the fourth outer wall structure has a long rectangular shape. It is waterproofed by the first upper floor vertical joint waterproof member and the second upper floor vertical joint waterproof member,
One edge in the width direction of the first lower-floor vertical joint waterproofing member is attached between the casing of the first outer wall structure and the outer wall member, and in the width direction of the second lower-floor vertical joint waterproofing member. One edge is attached between the frame of the second outer wall structure and the outer wall material, and the first lower floor vertical joint waterproof member and the second lower floor vertical joint waterproof member block the lower floor vertical joint. And
One edge in the width direction of the first upper-floor vertical joint waterproofing member is attached between the housing of the third outer wall structure and the outer wall member, and in the width direction of the second upper-floor vertical joint waterproofing member. One edge is attached between the frame of the fourth outer wall structure and the outer wall material, and the first upper floor vertical joint waterproof member and the second upper floor vertical joint waterproof member block the upper floor vertical joint. And
Upper ends of the first waterproof sheet and the second waterproof sheet are disposed on the indoor side of the first upper floor vertical joint waterproof member and the second upper floor vertical joint waterproof member, and the first waterproof sheet and the second waterproof sheet The waterproof structure of the joint is characterized in that the lower end of the waterproof sheet is disposed on the outdoor side of the first lower-floor vertical joint waterproof member and the second lower-floor vertical joint waterproof member.

[3] The waterproof structure for joints according to [1] or [2], wherein the lateral joint between the first outer wall structure and the third outer wall structure has a long rectangular shape. 1 is waterproofed by a horizontal joint waterproofing member, and the horizontal joint between the second outer wall structure and the fourth outer wall structure is waterproofed by a long rectangular second waterproofing member for horizontal joints. And
In the first waterproofing member for horizontal joints, one edge in the width direction is attached between the housing of the third outer wall structure and the outer wall material, and the other edge is on the surface of the first outer wall material structure. The second horizontal joint waterproofing member is attached, one edge in the width direction is attached between the housing of the fourth outer wall structure and the outer wall material, and the other edge is the second outer wall material structure. Affixed to the surface of the body,
A waterproof structure for joints, wherein the first waterproof sheet and the first waterproof joint member are joined, and the second waterproof sheet and the second joint waterproof member are joined.

  The waterproof structure of the joint of the present invention can secure the waterproof property of the intersection of the vertical joint and the horizontal joint without impairing the appearance.

  Next, an embodiment of the waterproof structure of the joint according to the present invention (hereinafter abbreviated as a waterproof structure) will be described. The waterproof structure of this embodiment is a structure which waterproofs the intersection of a vertical joint and a horizontal joint using the waterproof sheet 10 shown in FIG.

  FIG. 1 shows a waterproof sheet in this embodiment. The waterproof sheet 10 according to the present embodiment is made of a flexible sheet, and has a rectangular first waterproof region 11 and a rectangular second protruded from one end side of one short side of the first waterproof region 11. And a waterproof region 12. In the present embodiment, the protruding direction of the second waterproof region 12 is the longitudinal direction of the second waterproof region.

The length L ₁ in the longitudinal direction of the first waterproof region 11 is preferably 20 to 60 cm, and the length W ₁ in the width direction is preferably ₁₅ to 25 cm. The length L ₂ in the longitudinal direction of the second waterproof region 12 is preferably 3 to 15 cm, and the length W ₂ in the width direction is preferably 8 to 15 cm.

The flexible sheet constituting the waterproof sheet 10 is butyl rubber, ethylene-propylene-diene copolymer (EPDM) rubber, butyl rubber / EPDM rubber mixture, urethane rubber, styrene-isoprene-styrene block copolymer (SIS), styrene. A sheet made of rubber or elastomer such as butadiene-styrene block copolymer (SBS). Among the above-mentioned sheets, a sheet of butyl rubber or a mixture of butyl rubber / EPDM rubber is preferable because it has good weather resistance, heat resistance, fire resistance and the like and is inexpensive. In addition, a fabric may be bonded to one side of the sheet.

On one side of the waterproof sheet 10, the edge on the long side adjacent to the second waterproof region 12 in the first waterproof region 11 and the edge of the long side of the second waterproof region adjacent to the edge The 1st adhesive agent layer 14a is provided. A second adhesive layer 14 b is provided on the other long side edge of the first waterproof region 11. In addition, a third adhesive layer 14c is provided on the edge of the second waterproof region 12 on the long side not adjacent to the first adhesive layer 14a. A fourth adhesive layer 14d is provided at a portion of the short side edge of the first waterproof region 11 on the second waterproof region 12 side where the second waterproof region 12 is not adjacent.
Examples of the adhesive for forming the adhesive layer include a butyl adhesive, an acrylic adhesive, an epoxy adhesive, a urethane adhesive, and a natural rubber adhesive.
A release paper for protecting the adhesive layer may be provided on each adhesive layer.

In the first waterproof region 11 on the other surface of the waterproof sheet 10, a waterproof layer 15 is formed along the longitudinal direction of the first waterproof region 11 without being adjacent to the second waterproof region 12. Examples of the waterproof layer 15 include butyl rubber and independent foamed sponge.

As shown in FIG. 2, the waterproof structure of the present embodiment example using the waterproof sheet includes a first outer wall structure 21 and a second outer wall structure installed on the small edge side of the first outer wall structure 21. A vertical body formed by a body 22, a third outer wall structure 23 installed on the first outer wall structure 21, and a fourth outer wall structure 24 wetted on the second outer wall structure 22. The intersection M between the joints (the lower floor vertical joint V ₁ and the upper floor vertical joint V ₂ ) and the horizontal joints H ₁ and H ₂ is waterproofed by the waterproof sheet.
Specifically, as shown in FIG. 3, the intersection M is closed and waterproofed by the first waterproof sheet 10a and the second waterproof sheet 10b.
In this embodiment, as shown in FIG. 4, the lower floor vertical joint V ₁ is closed by the first lower floor vertical joint waterproof member 30a and the second lower floor vertical joint waterproof member 30b. The upper floor vertical joint V ₂ is sealed by the first upper floor vertical joint waterproof member 40a and the second upper floor vertical joint waterproof member 40b (FIGS. 3 and 4). reference).
Furthermore, horizontal joint H ₁ between the first outer wall structure 21 and the third outer wall structure 23, the horizontal joint of H ₂ between the second outer wall structure 22 and the fourth outer wall structure 24 The first horizontal joint waterproofing member 50a and the second horizontal joint waterproofing member 50b are closed and waterproof (see FIG. 3).

  The first to fourth outer wall structures 21 to 24 have a casing and a rectangular outer wall member attached to the casing. Here, the casing of the first outer wall structure 21 is referred to as a first casing 21a, and the outer wall member is referred to as a first outer wall member 21b. Similarly, the casing of the second outer wall structure 22 is referred to as a second casing 22a, the outer wall member is referred to as a second outer wall member 22b, the casing of the third outer wall structure 23 is referred to as a third casing 23a, and the outer wall member as an outer wall member. The third outer wall member 23b is referred to as a fourth outer wall member 24a, and the fourth outer wall member 24b is referred to as a fourth outer wall member 24b.

The first waterproof sheet 10a has the back surface (the surface of the third casing) of the third outer wall member 23b so that the second waterproof region vicinity portion 11a in the first waterproof region 11 is arranged at the intersection M. The first waterproof region 11 of the first waterproof sheet 10a is attached to the second outer wall structure 22 side by the second adhesive layer 14b (see FIG. 5).
Thus the first waterproof sheet 10a is mounted on the third outer wall structure 23, a first waterproofing region 11 of the first waterproof sheet 10a is disposed on the upper Kaitate joints V ₂ and horizontal joint H ₁ The second waterproof region 12 is disposed in the lower floor vertical joint V ₁ .

Moreover, in this waterproof structure 1, as shown in FIG. 5, the first waterproof sheet is not adjacent to the second waterproof region 12 at the edge of the first waterproof region 11 on the second waterproof region 12 side. The part is adhered to the surface of the first outer wall structure 21 by the fourth adhesive layer 14d. Moreover, as shown in FIG. 6, the edge of the second waterproof region 12 on the non-adjacent portion side and along the protruding direction is the small edge of the first outer wall structure 21 by the third adhesive layer 14c. It is affixed to 21c.

Similarly, the back surface of the fourth outer wall member 24b (of the fourth casing) is arranged so that the second waterproof region vicinity portion 11a in the first waterproof region 11 of the second waterproof sheet 10b is disposed at the intersection M. The first waterproof region 11 of the second waterproof sheet 10b is attached to the first outer wall structure 21 side of the front surface by the second adhesive layer 14b of the second waterproof sheet 10b.
In addition, the second waterproof sheet 10b has a non-adjacent portion that is not adjacent to the second waterproof region 12 at the edge of the first waterproof region 11 on the second waterproof region 12 side by the fourth adhesive layer 14d. The first outer wall structure 21 is attached to the surface. Further, the edge of the second waterproof region 12 on the non-adjacent portion side and along the protruding direction is attached to the small edge 21c of the first outer wall structure 21 by the third adhesive layer 14c. .
Thus the second waterproof sheet 10b is attached to the fourth outer wall structure 24, a first waterproofing region 11 of the second tarpaulin 10b is disposed above Kaitate joints V ₂ and horizontal joint H ₂ The second waterproof region 12 is disposed in the lower floor vertical joint V ₁ .

The first lower-floor vertical joint waterproofing member 30a and the second lower-floor vertical joint waterproofing member 30b in the present embodiment are, as shown in FIG. And CPP sheet 31), and a waterproof layer 32 made of butyl rubber provided along the longitudinal direction on one end of the CPP sheet 31 in the width direction. Further, the waterproof members 30a, 30b for the lower floor vertical joints are in contact with the valley fold region P that is folded back into a valley fold along the longitudinal direction, the waterproof layer 32, and the first casing 21a and the first outer wall material 21b. Or an attachment region Q attached between the second casing 22a and the second outer wall member 22b.
Further, the CPP sheet 31 of the lower-floor vertical joint waterproofing members 30a and 30b has the other end in the width direction bent toward the outside to form an outer folding portion 34. Furthermore, it is bent at the boundary line L between the valley fold region P and the attachment region Q so that the surface of the waterproof layer 32 and the tip of the fold 33 of the valley fold region P face each other.

The first waterproof member 30a for the lower Kaitate joints are attachment region Q ₁ is mounted between the first precursor 21a and the first outer wall member 21b, the second waterproof member 30b for the lower Kaitate joint is attachment region Q ₂ is attached between the second precursor 22a and the second outer wall member 22b (see FIG. 4).
The valley fold region P ₁ of the first lower Kaitate joint waterproof member 30a is disposed between the first precursor 21a and the second precursor 22a, the outer-folded portion 34 and the second outer wall member 22b And the second lower-floor vertical joint waterproofing member 30b. Further, valley folded region P ₂ of the second lower Kaitate joint waterproof member 30b is disposed between the first precursor 21a and the second precursor 22a, its outer folded portion 34 is first precursor 21a It is inserted and fixed between the first lower floor vertical joint waterproofing member 30a.
In this way, the longitudinal direction of the valley fold areas P ₁ and P ₂ of each of the lower floor vertical joint waterproofing members 30a and 30b is arranged along the lower floor vertical joint V ₁ , and the valley fold areas P ₁ and P _{2 are} mutually connected. Are stacked to block the lower vertical joint V ₁ .

The first upper-floor vertical joint waterproof member 40a and the second upper-floor vertical joint waterproof member 40b are the same as the lower-floor vertical joint waterproof members 30a and 30b.
First upper Kaitate joint waterproof member 40a is the attachment region Q ₃ is mounted between the third precursor 23a or the first tarpaulin 10a and the third outer wall member 23b. The second upper Kaitate joint waterproof member 40b, in the intersection M near the attachment region Q ₄ is mounted between the first waterproof sheet 10a and the fourth outer wall member 24b (see FIG. 8) in the above the intersection M near the attachment region Q ₄ is mounted between a fourth precursor 24a and the fourth outer wall member 24b (see FIG. 4).
The valley fold region P ₃ of the first upper Kaitate joint waterproof member 40a is disposed between the third precursor 23a and the fourth precursor 24a, the outer-folded portion 34 is a fourth exterior wall materials 24b And the second upper-floor vertical joint waterproofing member 40b. The second upper Kaitate joint waterproof member 40b is valley folded region P ₄ is disposed between the third precursor 23a and the fourth precursor 24a, the outer-folded portion 34 is the fourth building frame 24a Or it is inserted and fixed between the 1st waterproof sheet 10a and the 1st upper-floor vertical joint waterproof member 40a.
In this way, the longitudinal direction of the valley fold areas P ₃ and P ₄ of the upper floor vertical joint waterproofing members 40a and 40b is arranged along the upper floor vertical joint V ₂ , and the valley fold areas P ₃ and P ₄ Are overlapped to block the upper floor vertical joint V ₂ .

The first horizontal joint waterproofing member 50a and the second horizontal joint waterproofing member 50b are long rectangular sheets made of the same material as the first waterproof sheet 10a and the second waterproof sheet 10b.
The first horizontal joint waterproofing member 50a has one edge in the width direction attached between the third casing 23a and the third outer wall member 23b, on the upper end side of the surface of the first outer wall member 21b. The other edge is stuck. One edge in the longitudinal direction of the first horizontal joint waterproofing member 50a is overlaid on the first waterproof region 11 of the first waterproof sheet 10a (see FIG. 3).
The second horizontal joint waterproofing member 50b has one edge in the width direction attached between the fourth casing 24a and the fourth outer wall member 24b, on the upper end side of the surface of the second outer wall member 22b. The other edge is stuck. In addition, one edge in the longitudinal direction of the second horizontal joint waterproofing member 50b is overlapped on the first waterproof region 11 of the second waterproof sheet 10b.
In this way, the horizontal joint H ₁ is closed by the _first horizontal joint waterproofing member 50a, and the horizontal joint H ₂ is closed by the _second horizontal joint waterproofing member 50b.

  Furthermore, the 1st waterproof sheet 10a and the 2nd waterproof sheet 10b are joined by each 1st adhesive agent layer 14a. Further, as shown in FIG. 9, the upper ends of the first waterproof sheet 10a and the second waterproof sheet (not shown) are disposed on the indoor side of the upper-floor vertical joint waterproof members 40a and 40b, and they overlap each other. The lower ends of the first waterproof sheet 10a and the second waterproof sheet are arranged on the outdoor side of the waterproof members 30a, 30b for the lower floor vertical joints, and they overlap each other.

  In this waterproof structure 1, the length of the overlapping portion between the first waterproof sheet 10a and the second waterproof sheet 10b and the lower floor vertical joint waterproof members 30a, 30b or the upper floor vertical joint waterproof members 40a, 40b is: From the viewpoint of waterproofness, it is preferably as long as possible. Specifically, it is preferably 50 mm or more, and more preferably 100 mm or more.

A method for forming the waterproof structure will be described.
First, as shown in FIG. 10, on the surface of the first casing 21a adjacent to the second casing 22a, a mounting region Q1 of the _first lower-floor vertical joint waterproofing member 30a is installed to provide a waterproof layer. 32 is arranged on the surface side, and the valley fold region P ₁ is arranged on the lower floor vertical joint V ₁ . Next, as shown in FIG. 11, the first outer wall member 21b is attached to the first casing 21a to form the first outer wall structure 21, and the first lower floor is formed on the back surface of the first outer wall member 21b. The waterproof layer 32 of the vertical joint waterproof member 30a is disposed. At this time, the waterproof layer 15 contacts the first outer wall material 21b.
Similarly, the second outer wall member 22b is attached to the second casing 22a to form the second outer wall structure 22, and the second lower floor vertical joint is formed on the back surface of the second outer wall member 22b. the waterproof layer 32 of the waterproof member 30b arranged to position the valley-folding region P ₂ under Kaitate joint V _1.

Next, the valley fold region P2 of the _second lower-floor vertical joint waterproofing member 30b attached to the second outer wall structure 22 is placed between the first casing 21a and the second casing 22a with a construction tool. The outer folding part 34 is inserted and fixed between the first casing 21a and the first lower floor vertical joint waterproofing member 30a. Next, the valley fold region P1 of the _first lower-floor vertical joint waterproofing member 30a attached to the first outer wall structure 21 is placed between the first casing 21a and the second casing 22a with a construction tool. The outer folding part 34 is inserted between the second outer wall member 22b and the second lower floor vertical joint waterproofing member 30b and fixed.
In this way, the longitudinal direction of the valley fold regions P ₁ and P ₂ of the first lower floor vertical joint waterproofing member 30a and the second lower floor vertical joint waterproofing member 30b is along the lower floor vertical joint V _1. The valley folding regions P ₁ and P ₂ are overlapped with each other while being arranged (see FIG. 4).

Next, as shown in FIG. 12, the second sticking of the first waterproof sheet 10a is performed on the second housing 22a side of the surface of the third housing 23a (the surface on which the third outer wall member 23b is attached). Adhesive layer 14b is adhered. Moreover, the one edge of the width direction of the 1st horizontal joint waterproofing member 50a is stuck to the surface lower end part of the 3rd housing 23a. At that time, one edge in the longitudinal direction of the first waterproofing member 50a for the horizontal joint is overlapped on the first waterproof region 11 of the first waterproof sheet 10a.
In addition, as shown in FIG. 13, the second waterproof sheet 10b has a second surface on the first outer wall member 21b side of the surface of the fourth casing 24a (the surface on which the fourth outer wall member 24b is attached). The sticking agent layer 14b is stuck. Moreover, the one edge of the width direction of the 2nd waterproofing member 50b for horizontal joints is stuck to the surface lower end part of the 4th housing 24a.

Next, the CPP sheet in the first upper-floor vertical joint waterproofing member 40a is formed on the edge of the surface of the third casing 23a on the fourth casing 24a side and the portion of the first waterproof sheet 10a in contact with the third casing 23a. 31 is established the attachment region Q ₃ to place the waterproof layer 32 on the surface side of the, it places the valley fold region P ₃ above Kaitate joint V _2.
Next, the third outer wall member 23b is attached on the third casing 23a and the first waterproof sheet 10a (see FIG. 14).
Similarly, the CPP in the second upper-floor vertical joint waterproof member 40b is formed on the edge of the surface of the fourth casing 24a on the third casing 23a side and the portion of the second waterproof sheet 10b that is in contact with the fourth casing 24a. The attachment region Q ₄ of the seat 31 is installed and the waterproof layer 32 is disposed on the front side, and the valley fold region P ₄ is disposed in the upper floor vertical joint V ₂ .
Next, the fourth outer wall member 24b is attached on the fourth casing 24a and the second waterproof sheet 10b.

Next, as shown in FIG. 5, the non-adjacent portion of the edge of the first waterproof sheet 10a on the second waterproof region 12 side in the first waterproof region 11 is formed by the fourth adhesive layer 14d. It sticks on the upper end side of the surface of 1 outer wall material 21b. Similarly, the non-adjacent portion of the edge of the second waterproof sheet 10b on the second waterproof region 12 side in the first waterproof region 11 is covered with the surface of the second outer wall material 22b by the fourth adhesive layer 14d. Affix to the upper end side.
Further, the other edge of the first horizontal joint waterproofing member 50a attached to the third outer wall structure 23 is attached to the upper end side of the surface of the first outer wall member 21b, and the fourth outer wall structure 24 is attached. The other edge of the second horizontal joint waterproofing member 50b attached to is attached to the upper end side of the surface of the second outer wall member 22b.

Next, as shown in FIG. 6, for the first waterproof sheet 10 a, the edge of the second waterproof region 12 on the non-adjacent portion side of the first waterproof region 12 and along the protruding direction is attached to the third adhesive sheet. The adhesive layer 14c is attached to the small edge 21c of the first outer wall material 21b. Similarly, for the second waterproof sheet 10b, the edge of the second waterproof region 12 on the non-adjacent portion side of the first waterproof region 12 and along the protruding direction is formed by the third adhesive layer 14c. It sticks to the edge 21c of the 2nd outer wall material 21b.
Thereafter, at the lower Kaitate joint V ₁ and Uekaitate joint V _2, the first waterproof sheet 10a and the second tarpaulin 10b, each of the first attaching adhesive layer 14a, and bonded by 14a And join.

Next, as shown in FIG. 8, the valley fold region P ₄ of the second upper-floor vertical joint waterproofing member 40 b attached to the fourth outer wall structure 24 is divided into a third casing 23 a and a fourth casing 24 a. And the outer folding part 34 is inserted and fixed between the first waterproof sheet 10a and the first upper floor waterproofing member 40a. Then, a valley fold region P ₃ of the first upper Kaitate joint waterproof member 40a attached to the third outer wall structure 23, pushed between the third precursor 23a and the fourth precursor 24a. Then, the outer folded portion 34 of the first upper-floor vertical joint waterproofing member 40a is arranged between the first waterproof sheet 10a and the second upper-floor vertical joint waterproofing member 40b in the vicinity of the crossing portion M. Above the vicinity, it is inserted and fixed between the fourth outer wall member 24b and the second upper-floor vertical joint waterproofing member.
In this way, the longitudinal direction of the valley fold regions P ₃ and P ₄ of the first upper floor vertical joint waterproof member 40a and the second upper floor vertical joint waterproof member 40b is along the upper floor vertical joint V _2. while arranged, superimposing the valley fold region P _3, P ₄ with each other.
By the above procedure, as shown in FIG. 9, the upper ends of the first waterproof sheet 10a and the second waterproof sheet are connected to the first upper-floor vertical joint waterproof member 40a and the second upper-floor vertical joint waterproof member 40b. The lower end of the first waterproof sheet 10a and the second waterproof sheet is disposed on the outdoor side of the first lower floor vertical joint waterproof member 30a and the second lower floor vertical joint waterproof member 30b. Thus, the waterproof structure 1 is formed.

Thereafter, the vertical joints V ₁ and V ₂ are filled with the backup material 61 and the caulking material 62 (see FIG. 15. FIG. 15 is a diagram in which the lower floor longitudinal joint V ₁ is filled with the backup material 61 and the caulking material 62. ), insert gasket 63 (see FIG. 16. FIG. 16 may be a diagram filled with gasket 63 under Kaitate joint V _1.).
Further, the intersection M and the horizontal joints H ₁ and H ₂ are covered with the decorative sheet 64 (see FIG. 17. FIG. 17 is a view in which the horizontal joint H ₁ is covered with the decorative sheet 64). Can be achieved.

In the waterproof structure 1 described above, the second waterproof region 12 of the first waterproof sheet 10a is attached to the small edge 21c of the first outer wall member 21b, and the second waterproof region 12 of the second waterproof sheet 10b is the second. The first waterproof sheet 10a and the second waterproof sheet 10b, the first lower-floor vertical joint waterproof member 30a, and the second lower-floor vertical joint because they are attached to the small opening 22c of the second outer wall member 22b The waterproof member 30b for use is close. Therefore, a gap is formed between the lower ends of the first waterproof sheet 10a and the second waterproof sheet 10b and the upper ends of the first lower floor vertical joint waterproof member 30a and the second lower floor vertical joint waterproof member 30b. It is hard to be done, and rain is hard to enter the indoor side even in the case of wind and rain. Therefore, the water resistance of the intersection M is excellent.
Moreover, in this waterproof structure 1, the water blocked by the surfaces of the first upper floor vertical joint waterproof member 40a and the second upper floor vertical joint waterproof member 40b is the first waterproof sheet 10a and the second waterproof sheet. Since water flows along the surface of the first lower floor vertical joint waterproofing member 30a and the second lower floor vertical joint waterproofing member 30b along the surface of the sheet 10b, water hardly enters the indoor side.
Moreover, in the waterproof structure 1, since the first waterproof sheet 10a and the second waterproof sheet 10b are within the vertical joints V ₁ and V ₂ and the intersection M, the horizontal joints H ₁ and H ₂ are made up of the cosmetic mall. Even if it is covered, it is difficult to protrude from the cosmetic mall and it is difficult to damage the appearance.

Note that the present invention is not limited to the above-described embodiments. For example, in the above-described embodiment, the first waterproof sheet and the second waterproof sheet are first attached to the outer wall material, and the horizontal joint waterproof member is stacked on the first waterproof sheet or the second waterproof sheet. However, the waterproof material for horizontal joints may be first attached to the outer wall material, and the first waterproof sheet or the second waterproof sheet may be stacked on the horizontal joint waterproof member.
The lower floor vertical joint waterproof member and the upper floor vertical joint waterproof member may be rubber sheets. In the case where the lower-floor vertical joint waterproof member and the upper-floor vertical joint waterproof member are rubber sheets, the rubber sheets attached to the outer wall structures adjacent to the left and right are joined together by an adhesive or the like.
Further, the first waterproof sheet and the second waterproof sheet may not be provided with the adhesive layer in advance. When the adhesive layer is not provided in advance, the adhesive layer may be applied at a predetermined position immediately before the waterproof sheet is adhered.

It is a top view which shows one embodiment of the waterproof sheet of this invention. It is a perspective view which shows an example of a joint. 1 is a perspective view showing an embodiment of a waterproof structure for a joint according to the present invention. FIG. 4 is a cross-sectional view taken along the line A-A ′ of FIG. 3. It is a front view which shows one example of embodiment of the waterproof structure of the joint of this invention. FIG. 4 is a B-B ′ sectional view of FIG. 3. It is a perspective view which shows the waterproof member for lower floor vertical joints or the waterproof member for upper floor vertical joints which comprises the waterproof structure of the joint example of FIG. FIG. 4 is a cross-sectional view taken along the line C-C ′ of FIG. 3. It is D-D 'sectional drawing of FIG. It is sectional drawing which shows 1 process at the time of forming the embodiment example of the waterproof structure of the joint of FIG. It is sectional drawing which shows 1 process at the time of forming the embodiment example of the waterproof structure of the joint of FIG. It is a front view which shows 1 process at the time of forming the embodiment of the waterproof structure of the joint of FIG. It is a front view which shows 1 process at the time of forming the embodiment example of the waterproof structure of the joint of FIG. It is sectional drawing which shows 1 process at the time of forming the embodiment example of the waterproof structure of the joint of FIG. FIG. 4 is a cross-sectional view showing a mode in which a vertical joint is filled with a backup material and a caulking material in the embodiment of the waterproof structure of the joint shown in FIG. 3. FIG. 4 is a cross-sectional view showing a mode in which a gasket is filled in a vertical joint in the embodiment of the waterproof structure of the joint in FIG. 3. FIG. 4 is a cross-sectional view showing an aspect in which the horizontal joint is covered with a decorative sheet in the embodiment of the waterproof structure of the joint shown in FIG. 3. A conventional example of a joint waterproof structure is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Waterproof sheet 10a 1st waterproof sheet 10b 2nd waterproof sheet 11 1st waterproof area 11a 2nd waterproof area vicinity part 12 2nd waterproof area 14a 1st adhesive layer 14b 2nd adhesive Layer 14c Third adhesive layer 14d Fourth adhesive layer 21 First outer wall structure 21a First housing 21b First outer wall material 21c Small edge 22 Second outer wall structure 22a Second housing 22c Small opening 22b 2nd outer wall material 23 3rd outer wall structure 23a 3rd housing 23b 3rd outer wall material 24 4th outer wall structure 24a 4th housing 24b 4th outer wall material 30a 1st lower-floor length Waterproof member for joint 30b Second waterproof member for lower joints 40a First upper joint waterproof member for upper joints 40b Second upper joint waterproof member for upper joints 50a First waterproof member for horizontal joints 50b Second horizontal joint for waterproof member V ₁ lower floor Joint V ₂ above Kaitate joints H _1, H ₂ horizontal joint M intersection 110 lower floor for the outer wall structure 111 skeleton 112 siding 120 upstairs for the outer wall structure 121 skeleton 122 siding 130 under Kaitate joint waterproof sheet 140 Waterproof sheet for upper joints on upper floor 150 Waterproof sheet for intersection 160 Waterproof sheet for horizontal joints

Claims (3)

A first outer wall structure, a second outer wall structure installed on one edge side of the first outer wall structure, a third outer wall structure installed on the first outer wall structure, Waterproofing of joints in which the intersection of the vertical joint and the horizontal joint formed by the fourth outer wall structure installed on the second outer wall structure is waterproofed by the first waterproof sheet and the second waterproof sheet Structure,
The first to fourth outer wall structures have a casing and an outer wall material attached to the casing,
The first waterproof sheet and the second waterproof sheet are made of a flexible sheet, and have a rectangular first waterproof area and a second waterproof area protruding from one side of the first waterproof area. ,
The 1st waterproof sheet is the 2nd outer wall structure side of the back of the outer wall material which constitutes the 3rd outer wall structure so that the 2nd waterproof area neighborhood part in the 1st waterproof area may be arranged at an intersection. The first waterproof region of the first waterproof sheet is attached, and the non-adjacent portion of the first waterproof region that is not adjacent to the second waterproof region at the edge of the second waterproof region is the first outer wall. Attached to the surface of the structure, the edge on the non-adjacent portion side in the second waterproof region and along the protruding direction is attached to the edge of the first outer wall structure,
The 2nd waterproof sheet is the 1st outer wall structure side of the back of the outer wall material which constitutes the 4th outer wall structure so that the 2nd waterproof area neighborhood part in the 1st waterproof area may be arranged at an intersection. The first waterproof region of the second waterproof sheet is attached, and the non-adjacent portion not adjacent to the second waterproof region at the edge of the second waterproof region in the first waterproof region is the first outer wall Attached to the surface of the structure, the edge on the non-adjacent portion side in the second waterproof region and along the protruding direction is attached to the edge of the first outer wall structure,
A waterproof structure for a joint, wherein the first waterproof sheet and the second waterproof sheet are joined. The waterproof structure for joints according to claim 1,
Furthermore, the lower floor vertical joint between the first outer wall structure and the second outer wall structure is a long rectangular first waterproof member for the lower floor vertical joint and the second lower floor vertical joint waterproof. The upper floor vertical joint between the third outer wall structure and the fourth outer wall structure is waterproofed by the member, and the first upper floor vertical joint waterproof member and the second upper floor vertical It is waterproofed by joint waterproofing material,
One edge in the width direction of the first lower-floor vertical joint waterproofing member is attached between the casing of the first outer wall structure and the outer wall member, and in the width direction of the second lower-floor vertical joint waterproofing member. One edge is attached between the frame of the second outer wall structure and the outer wall material, and the first lower floor vertical joint waterproof member and the second lower floor vertical joint waterproof member block the lower floor vertical joint. And
One edge in the width direction of the first upper-floor vertical joint waterproofing member is attached between the housing of the third outer wall structure and the outer wall member, and in the width direction of the second upper-floor vertical joint waterproofing member. One edge is attached between the frame of the fourth outer wall structure and the outer wall material, and the first upper floor vertical joint waterproof member and the second upper floor vertical joint waterproof member block the upper floor vertical joint. And
Upper ends of the first waterproof sheet and the second waterproof sheet are disposed on the indoor side of the first upper floor vertical joint waterproof member and the second upper floor vertical joint waterproof member, and the first waterproof sheet and the second waterproof sheet The waterproof structure of the joint is characterized in that the lower end of the waterproof sheet is disposed on the outdoor side of the first lower-floor vertical joint waterproof member and the second lower-floor vertical joint waterproof member. The joint waterproof structure according to claim 1 or 2,
Further, the horizontal joint between the first outer wall structure and the third outer wall structure is waterproofed by the first rectangular waterproofing member having a long rectangular shape, and the second outer wall structure and the fourth outer wall structure. The lateral joint between the outer wall structure and the outer wall structure is waterproofed by the long rectangular second waterproof joint member,
In the first waterproofing member for horizontal joints, one edge in the width direction is attached between the housing of the third outer wall structure and the outer wall material, and the other edge is on the surface of the first outer wall material structure. The second horizontal joint waterproofing member is attached, one edge in the width direction is attached between the housing of the fourth outer wall structure and the outer wall material, and the other edge is the second outer wall material structure. Affixed to the surface of the body,
A waterproof structure for joints, wherein the first waterproof sheet and the first waterproof joint member are joined, and the second waterproof sheet and the second joint waterproof member are joined.

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