JPH04360937A - Waterproof structure of joint section of external wall - Google Patents

Abstract

PURPOSE:To improve the workability at a building site while realizing high watertightness without depending upon the filling of a caulking material regarding waterproof structure in the external wall of a unit residence, etc., particularly the waterproof structure of the joint section of the external wall, in which a wall sewage drip is disposed extending over the upper edge surface side of a lower-side external wall material from the lower edge rear side of an upper-side external wall material to a joint section joining the upper-side external wall material and the lower-side external wall material. CONSTITUTION:A sheet member 11 is used as a wall sewage drip. A tabular member 12 positioned along the lower edge rear side of an upper-side external wall material 3 is installed to a section disposed on the lower edge rear side of the upper-side external wall material of the sheet member 11 while an adhesive layer 13 is formed on a surface along the upper edge surface side of the lower-side external wall material 4 of the sheet member 11.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a waterproof structure for the outer wall of a unit house, etc., and in particular, the present invention relates to a waterproof structure for the outer wall of a unit house, etc. This invention relates to a waterproof structure for exterior wall joints, which is constructed by arranging a wall drainer over the upper edge of the material.

0002

2. Description of the Related Art Generally, as shown in FIG. 3, an outer wall 2 that is continuous with a roof 1 is connected to an upper decorative outer wall material (for example, painted hard wood cement board) 3 on the roof 1 side. Conventionally, a draining device as shown in Japanese Utility Model Publication No. 59-36537, or a draining device as shown in FIG. 3 and FIG.
As shown in the figure, a waterproof structure is provided which includes a wall drainer 6, waterproof paper (for example, asphalt roofing) 7, a flashing 8, a drainer cover 9, caulking material 10, and the like.

The wall drainer 6 used in such a waterproof structure has conventionally been formed of a vinyl chloride resin-coated steel plate or the like in the shape shown in FIGS. 5(a) and 5(b). That is, as shown in FIGS. 5(a) and 5(b), the wall drainer 6 has a stepped portion 6a formed in the center thereof that passes through the joint 5 between the outer wall materials 3 and 4, and this step portion 6a. An upper portion 6 extending from the step portion 6a along the lower edge back side of the decorative exterior wall material 3
b, and a lower portion 6c extending from the step portion 6a along the upper edge surface side of the base outer wall material 4.

The above-mentioned wall drainer 6 has its upper part 6b attached to the back side of the lower edge of the decorative exterior wall material 3 in advance at a factory, and is attached to the decorative exterior wall material 3 and the base exterior wall at the construction site of a house. When joining the material 4, by placing the lower part 6c of the wall drainer 6 on the front side of the upper edge of the base outer wall material 4 with an appropriate gap, the wall drainer 6 can be attached to the joint part 5. It is arranged from the back side of the lower edge of the decorative exterior wall material 3 to the front side of the upper edge of the base exterior wall material 4.

Then, the waterproof paper 7 and the flashing 8 disposed along the base outer wall material 4 are raised from the roof 1 side, and the upper edges of the waterproof paper 7 and the flashing 8 are shown in FIG. As shown in FIG. 4, it is inserted between the base outer wall material 4 and the lower part 6c of the wall drainer 6.

After this, as shown in FIG.
The lower part 6c and the upper edge parts of the waterproof paper 7 and the rain stopper 8 are covered with a draining cover 9, and caulking material 10 is applied to the joint 5 between the draining cover 9 and the lower edge of the decorative exterior wall material 3. is filled to form a waterproof structure.

[0007]

[Problems to be Solved by the Invention] However, in the conventional waterproof structure for exterior wall joints, a wall under-wall drainer is provided at the joint 5 from the back side of the lower edge of the decorative exterior wall material 3 to the front side of the upper edge of the base exterior wall material 4. 6 is made of vinyl chloride resin-coated steel plate, etc. so that it cannot be deformed, so waterproof paper 7 can be used at construction sites.
There was a problem that the workability of setting up the rain flashing 8 was poor.

In addition, since the wall drainer 6 cannot be deformed as described above, the wall drainer 6 may be replaced with waterproof paper 7 or a rain cover inserted between the base outer wall material 4 and the lower part 6c of the wall drainer 6. 8, and a gap is created as shown in FIG. Therefore, it is necessary to fill the gap with caulking material, and waterproofing often relies on filling with caulking material, which has low construction reliability.

[0009] The present invention aims to solve these problems, and provides an exterior wall joint that improves workability at construction sites and achieves high watertightness without the need for filling with caulking material. The purpose is to provide a waterproof structure.

0010

[Means for Solving the Problems] In order to achieve the above object, the waterproof structure for an exterior wall joint of the present invention includes a joint that joins an upper exterior wall material and a lower exterior wall material to a lower edge of the upper exterior wall material. A wall under-wall drainer is disposed from the back side to the upper edge front side of the lower exterior wall material, and is characterized in that a sheet-like member is used as the wall under-wall drainer.

[0011] Furthermore, a plate-like member is provided on the back side of the lower edge of the upper outer wall material of the sheet-like member, and a plate-like member is provided along the back side of the lower edge of the upper outer wall material, and the front side of the upper edge of the lower outer wall material of the sheet-like member is provided. An adhesive layer may be provided on the surface along.

0012

[Operation] In the waterproof structure of the external wall joint of the present invention described above,
Sheet-like members are used as wall drains that are installed from the back side of the lower edge of the upper exterior wall material to the front side of the upper edge of the lower exterior wall material. In addition to being able to turn up the member, after the installation work is completed, the sheet-like member can be hung down and brought into close contact with the front side of the upper edge of the lower exterior wall material.

Furthermore, by providing a plate-like member on the back side of the lower edge of the upper external wall material of the sheet-like member, it is possible to easily attach the sheet-like member to the upper external wall material as a wall drainer, and also to make the sheet-like member By providing the adhesive layer on the surface along the upper edge front side of the lower exterior wall material, sufficient adhesion of the sheet-like member to the upper edge front side of the lower exterior wall material can be obtained.

[0014]

[Embodiment] A waterproof structure for an exterior wall joint as an embodiment of the present invention will be explained below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an exterior wall joint to which the structure is applied, and FIG. ) and (b) are a front view and a side view, respectively, showing a wall drain in the structure of this embodiment.

[0015] Also in this embodiment, the structure of the present invention is similar to the conventional structure shown in FIG.
A case will be described in which the present invention is applied to a joint portion 5 that joins a lower base exterior wall material 4 that is connected to the side.

In the waterproof structure of this embodiment, as shown in FIG. It is composed of a draining sheet (wall drainer) 11 disposed over the edge surface side, waterproof paper (for example, asphalt roofing) 7, rain flashing 8, etc. similar to conventional ones. Although not shown in FIG. 1, this embodiment is also provided with a drain cover and the like, similar to the conventional structure shown in FIG.

As described above, the drain sheet 11, ie, a sheet-like member, is used as the under-wall drain in the waterproof structure of this embodiment.

This draining sheet 11 is shown in FIGS. 1 and 2.
As shown in (a) and (b), it is made of EPDM, and the portion disposed on the back side of the lower edge of the decorative exterior wall material 3 is made of vinyl chloride resin along the back side of the lower edge of the decorative exterior wall material 3. A plate member 12 made of a coated steel plate is provided, and an adhesive layer 13 is provided on a surface along the upper edge surface side of the base outer wall material 4.

The surface of the adhesive layer 13 is covered with a release paper 13a when not in use, and the release paper 13a is peeled off when the draining sheet 11 is brought into close contact with the upper edge surface of the base outer wall material 4. It has become.

Draining sheet 11 constructed as described above
is attached in advance to the back side of the lower edge of the decorative exterior wall material 3 via the plate-like member 12 at the factory, and when the drainage sheet 11 is turned upward at the construction site of the house, the roof part 1 side is Then, the waterproof paper 7 and the flashing 8 disposed along the base outer wall material 4 are raised.

After the work of setting up the waterproof paper 7 and the rain cover 8 is completed, the release paper 13a is peeled off and the adhesive layer 13 is removed.
With the draining sheet 11 exposed, the draining sheet 11 is hung down and brought into close contact with the upper edge surface of the base outer wall material 4 (in this case, on the rain flashing 8).

After this, similar to the conventional structure (see FIG. 3)
A waterproof structure is formed by covering the joint portion 5 with a draining cover or the like.

As described above, according to the waterproof structure of this embodiment, since the sheet-like draining sheet 11 is used as a drainer under the wall, it is extremely difficult to set up the waterproof paper 7, rain flashing 8, etc. at the construction site. In addition to being easy to perform, the draining sheet 11 can be freely deformed, so after the completion of the start-up work, the draining sheet 11 can be easily attached to the upper edge surface side of the base outer wall material 4 by simply hanging it down.

Furthermore, by providing a highly rigid plate member 12 on the back side of the lower edge of the decorative exterior wall material 3 of the drainage sheet 11, the attachment of the drainage sheet 11 to the decorative exterior wall material 3 is facilitated, and the adhesive layer By providing 13, the draining sheet 1
Adhesion to the upper edge surface side of the base outer wall material 4 of 1 can be ensured sufficiently, and more reliable watertightness can be obtained.

[0025] In the above embodiment, a case has been described in which the structure of the present invention is applied to the joint portion 5 of the outer wall portion 2 that is continuous with the roof portion 1, but the present invention is not limited to this. The same applies to joints between exterior walls.

Furthermore, the present invention is not limited to the above-mentioned embodiments, and even if there are design changes without departing from the gist of the present invention, the scope of the present invention still falls within the scope of the present invention.

[0027]

[Effects of the Invention] As described in detail above, according to the waterproof structure for external wall joints of the present invention, by using a sheet-like member as a drainer under the wall, workability at a construction site is greatly improved, and It has the effect of obtaining high watertightness without having to be filled with caulking material.

[0028] Furthermore, by providing a plate-like member on the sheet-like member, the sheet-like member can be easily attached to the upper outer wall material, and by providing an adhesive layer on the sheet-like member, the lower side of the sheet-like member can be attached. Adhesion to the upper edge of the exterior wall material is achieved, and it also has the effect of achieving higher watertightness.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing an outer wall joint part to which a waterproof structure for an outer wall joint part is applied as an embodiment of the present invention.

FIG. 2 shows a wall drain in the structure of this embodiment, in which (a) is a front view thereof, and (b) is a side view thereof.

FIG. 3 is a sectional view showing an exterior wall joint to which a conventional exterior wall joint waterproof structure is applied.

FIG. 4 is a cross-sectional view schematically showing main parts of a conventional structure.

[Fig. 5] This shows the drain under the wall in the conventional structure.
(a) is a front view thereof, and (b) is a side view thereof.

[Explanation of symbols]

1 Roof section 2 Exterior wall section 3 Decorative exterior wall material (upper exterior wall material) 4 Base exterior wall material (lower exterior wall material) 5 Joint section 7 Waterproof paper 8 Rain flashing 11 Drainage sheet (wall drainer, sheet-like member) 12 Plate-like member 13 Adhesive layer 13a Release paper

Claims (2)

[Claims] 1. An outer wall in which a wall drainer is provided at a joint where an upper outer wall material and a lower outer wall material are joined, from the back side of the lower edge of the upper outer wall material to the front side of the upper edge of the lower outer wall material. A waterproof structure for a joint part of an exterior wall, characterized in that a sheet-like member is used as the wall drainer. 2. A plate-like member along the back side of the lower edge of the upper external wall material is provided in a portion of the sheet-like member disposed on the back side of the lower edge of the upper external wall material, and a plate-like member is provided along the lower edge back side of the upper external wall material, and 2. The waterproof structure for an exterior wall joint according to claim 1, wherein an adhesive layer is provided on a surface along the upper edge surface of the side exterior wall material.