JPH102028A - Throating material, and waterproof structure of external wall using the throating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure capable of surely performing waterproof treatment of a butted part of an external wall panel, and capable of preventing the delay in the installation process of a roof unit even when it is applied to a unit building. SOLUTION: A jointed external wall face member 3 is stored and fixed in a recessed part 2 provided between external wall face members 11 of right and left external wall panels 1, and a butted part of upper and lower external wall panels l and a butted part of upper and lower joined external wall members 3 are provided continuously in the horizontal direction. A butted part of the right and left external wall panels 1 is water-proof treated by a wall upper joint waterproof tape 22, a wall end joint waterproof tape 23, and a wall lower joint waterproof tape 24 which are adhered so as to be across the right and left external wall panels 1. A throating member 8 having a back side vertical piece opposite to the back side of the joined external wall member 3, a horizontal piece opposite to the upper surface of the joined external wall member 3, and a face side vertical piece opposite to the surface of the joined external wall member 3 is fixed to the wall upper joint waterproof tape 22, and a lower end part of the wall end joint waterproof tape 23 between the upper external wall panels 1 is adhered to the face side vertical piece of the throating member 8 between the lower external wall panels 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a waterproof structure for an outer wall of a building.

[0002]

2. Description of the Related Art Generally, a waterproof structure for preventing intrusion of water is employed at a butt portion between upper and lower outer wall panels and a butt portion between left and right outer wall panels. As a typical conventional waterproof structure adopted for abutting portions of upper and lower outer wall panels, for example, a structure described in Japanese Patent Publication No. 6-33632 is known. That is, in this structure, the lower-floor building unit (the second-floor building unit)
Between the outer wall panel of the upper-floor building unit and the outer wall panel of the lower-floor building unit, which is adhered and fixed along the upper end of the outer wall panel of the above-mentioned outer wall panel, and is adhered on the waterproof sheet on the wall. The upper end of the packing is sandwiched and fixed between the outer wall material of the outer wall panel of the upper floor building unit and the wall frame material, and the lower end of the packing on the wall of the lower floor building unit. The butting portions of the upper and lower outer wall panels are waterproofed by a waterproof sheet below the wall, which is bonded and fixed thereon. When the waterproof structure is adopted, in the step of assembling the lower-floor building unit and the upper-floor building unit in a factory, the waterproof sheet on the wall and the packing are adhesively fixed to the lower-floor building unit. The lower tarpaulin is adhesively fixed to the upper building unit, and the upper floor building unit is installed on the lower floor building unit at the construction site, and then the lower end of the lower wall tarpaulin is placed on the wall of the lower floor building unit. This is the construction procedure for bonding and fixing to the waterproof sheet.

[0003] The applicant of the present application has previously filed an application as disclosed in Japanese Patent Application No. 7-62686 as a joint structure of left and right outer wall panels. In this invention, a recess is provided between the left and right outer wall panels by retracting the side end of the outer wall material from the side end of the wall frame material, and the joint outer wall material is fixed in the recess in the recessed state. . In this joint structure, since the surface of the joint outer wall material and the surface of the outer wall panel are substantially flush with each other, a sense of unity is obtained between the joint outer wall material and the outer wall panel. This is an excellent invention that can be improved.

[0004]

However, Japanese Patent Application No. 7-62686 described above discloses a waterproof structure for abutting portions of upper and lower outer wall panels when a joint outer wall material is provided in a recess between left and right outer wall panels. Is not disclosed.

On the other hand, it is conceivable to adopt the waterproof structure of the outer wall described in Japanese Patent Publication No. Hei 6-33632 by replacing the outer wall material of the outer wall panel with a joint outer wall material. The following problem arises because the bonding target of the waterproof sheet for waterproofing the butted portion of the outer wall panel is a joint outer wall material. For example, in the case of a two-story unit building where the first floor part is composed of a lower-floor building unit, the second floor part is composed of an upper-floor building unit, and the roof part is composed of a roof unit, the following construction procedure and Become. That is, first, the lower-floor building unit is installed on the foundation, and the outer wall material is stored and fixed in the recess between the left and right outer wall panels of the lower-floor building unit. Then, a spliced waterproof sheet is adhered to the upper surface of the spliced outer wall material. Next, the upper-floor building unit is installed on the lower-floor building unit, the outer wall material is stored and fixed in the recess between the left and right outer wall panels of the upper-floor building unit, and then the wall fixed to the upper-floor building unit is fixed. The lower end of the lower tarpaulin is adhered and fixed from above the wall tarpaulin and the splicing tarpaulin of the lower building unit, and then the roof unit is mounted on the upper building unit. However, in such a construction procedure, since the time until the installation of the roof unit is long, there is a problem that the weather changes and there is a high possibility of being damaged by rainfall during the construction.

In view of the above, the present invention has been made so that the joint portion of the outer wall panels can be reliably waterproofed on the outer wall in which the outer wall material is housed and fixed in the recess between the left and right outer wall panels. It is still another object of the present invention to provide a waterproof structure for an outer wall which can be applied to a unit building without delaying a roof unit installation process.

[0007]

According to a first aspect of the present invention, there is provided a draining material, wherein the outer wall material is fixed to a recess provided between outer wall materials of left and right outer wall panels. A vertical piece facing the back surface, a horizontal piece facing the upper surface of the joint outer wall material, and a front vertical piece facing the surface of the joint outer wall material are provided. Here, the joint outer wall material is a member that is housed on the same plane as the outer wall material and constitutes the outermost part of the outer wall.

According to a second aspect of the present invention, the outer wall panel has a wall frame member and an outer wall member fixed to the wall frame member, and a side end of the outer wall member has the wall end. Recessed from the side end of the frame material, a recess is provided between the outer wall materials of the left and right outer wall panels. A waterproof structure for an outer wall in which a butt portion of a joint outer wall material is provided continuously in a horizontal direction, wherein the butt portion of the left and right outer wall panels is bonded so as to straddle the left and right outer wall panels. 2. The drainage material according to claim 1, wherein the drainage material is fixed on the wall joint waterproof material, and the lower end of the wall joint waterproof material between the upper outer wall panels has a lower surface between the lower outer wall panels. The structure was adhered to the vertical piece.

Further, in the waterproof structure for an outer wall according to the third aspect, a gap between the upper surface of the outer wall panel and the upper surface of the joint outer wall material straddles the upper surface of the outer wall panel and the upper surface of the horizontal piece of the drainer. Waterproofing is carried out with a wall joint waterproofing material adhered so as to be peeled off, and the wall jointing waterproofing material is configured to be continuous with a wall waterproofing material provided along the upper surface of the outer wall panel, Item 4. In the waterproof structure for an outer wall according to Item 4, a packing is continuously bonded along the jointed waterproofing material on the wall and the waterproofing material on the wall, and abutting portions of upper and lower outer wall panels are waterproofed by the packing. In the waterproof structure for an outer wall according to claim 5, the outer wall panel is an outer wall panel of a unit building including a building unit and a roof unit, and a butt portion of the outer wall panel and a butt of the joint outer wall material. But it has a configuration which is provided at the junction of the unit.

[0010]

In the waterproof structure for an outer wall according to the second aspect, since the abutting portions of the left and right outer wall panels are waterproofed by a wall joint waterproof material, it is possible to prevent rainwater from entering between the left and right outer wall panels. The lower end of the wall joint waterproofing material between the upper outer wall panels is fixed between the lower outer wall panels.
Since it is adhered to the vertical piece of the drainer described above, it is possible to prevent rainwater that has entered between the upper and lower outer wall materials from reaching between the upper and lower outer wall panels. Furthermore, in this waterproof structure of the outer wall, the lower end portion of the wall joint waterproofing material is a draining material fixed to the outer wall panel,
After the waterproofing process of the butted portions of the upper, lower, left and right outer wall panels is completed, the joining outer wall material can be attached, and the operation procedure is not restricted. That is, the attachment of the joint outer wall material can be performed in advance in a later process up to the installation of the roof unit. As a result, the time until the installation of the roof unit can be reduced.

In the waterproof structure for an outer wall according to a third aspect, the gap between the upper surface of the outer wall panel and the upper surface of the joint outer wall material is waterproofed by the on-wall joint waterproof material. Even if the lower end of the draining material and the front vertical piece of the draining material are peeled off and rainwater enters during that time, the rainwater enters the outer wall through the gap between the outer wall panel and the joint outer wall material. Can be prevented.

In the waterproof structure for the outer wall according to the fourth aspect, the butt portion of the upper and lower outer wall panels is waterproofed by packing, so that even if rainwater enters the butt portion of the upper and lower outer wall panels, the rainwater is not removed. Can be reliably prevented from reaching the indoor side.

In the waterproof structure for an outer wall according to the fifth aspect, when a unit building is constructed, after the work of installing the building unit and the roof unit and the work of waterproofing the butted portion of the outer wall panel at the junction of the units are completed. Thus, the work of attaching the joint outer wall material to the joint portion of the unit can be performed.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a waterproof structure for an outer wall according to an embodiment will be described in detail with reference to the drawings. FIG. 2 is an overall view showing a two-story unit building, in which a first-floor part is constituted by a lower-floor building unit U1, a second-floor part is constituted by an upper-floor building unit U2, and a roof part is constituted by a roof unit U3. . The lower-floor building unit U1 and the upper-floor building unit U2 are configured by assembling an outer wall panel 1 as a bearing wall and a floor panel (not shown) in a box shape.

FIG. 3 is a cross-sectional view showing an abutting portion of the left and right outer wall panels 1 at the joint between the upper-floor building units U2. As shown in FIG. 3, the outer wall panel 1 is made of a hard wood chip cement board or the like. It is constituted by fixing the outer wall material 11 to a wall frame material 12 made of wood or the like. The side end of the outer wall member 11 of each outer wall panel 1 is recessed from the side end of the wall frame member 12, and a recess 2 is provided between the outer wall members 11 of the left and right outer wall panels 1. The joint outer wall material 3 which is a cement material formed by extrusion molding is fixed in the recess 2 in a housed state.

As shown in FIG. 7, the recess 2 includes a wall-end waterproof plate 21 such as a bent product of polypropylene resin, a wall-joint waterproof tape 22 such as butyl tape, a wall-joint waterproof tape 23, and a wall-joint waterproof tape 23. The waterproofing tape 24 is waterproofed.

The wall end waterproof plate 21 is formed in an L-shaped cross section, and is adhered along the side end surface of the outer wall material 11 and the exposed portion of the surface of the wall frame material 12.

The above-mentioned wall splicing waterproof tape 22 is provided so as to straddle the upper ends of the left and right outer wall panels 1. It is adhered to the waterproof plate 21.

The wall end joint waterproof tape 23 is provided so as to straddle the side ends of the left and right outer wall panels 1 and is adhered to the wall end waterproof plate 21. The wall end joint waterproofing tape 23 has a lower end 231 extending below the lower end of the outer wall panel 1 and is provided at an upper end of the outer wall panel 1 of the lower-floor building unit U1. It is adhered to the front side of the wall splicing waterproof sheet 7.

The lower joint wall waterproof tape 24 is provided so as to straddle the lower end portions of the left and right outer wall panels 1, and includes the wall end waterproof plate 21 and the wall end joint waterproof tape 23.
Adhered to.

That is, the butting portions of the left and right outer wall panels 1 are waterproofed by the above-mentioned waterproofing tape 22 on the wall, the waterproofing tape 24 on the lower wall, and the waterproofing tape 23 on the wall end. Although not shown, the butting portion of the left and right outer wall panels 1 at the joint between the lower-floor building units U1 has the same configuration.

FIG. 4 is a longitudinal sectional view showing the butting portion of the outer wall panel 1 of the lower-floor building unit U1 and the outer wall panel 1 of the upper-floor building unit U2, and corresponds to the IV-IV sectional view of FIG. The abutting portion is subjected to a waterproofing treatment including an on-wall waterproof sheet 4 such as butyl tape, an under-wall waterproof sheet 5, and a packing 6 such as urethane resin foam.

The waterproof sheet 4 on the wall is bent in an L-shape along the upper surface of the wall frame member 12, the upper surface of the outer wall member 11, and the upper end surface of the outer wall member 11 of the lower floor building unit U1. The outer wall material 11 is attached over substantially the entire length.

The upper end of the under-wall waterproof sheet 5 is attached to the lower end of the outer wall panel 1 of the upper-floor building unit U2.
1 is adhered in a state of being sandwiched between the back surface and the wall frame material 12, and the lower end is adhered to the front side of the waterproof sheet 4 on the wall of the lower-floor building unit U <b> 1. It is provided over the entire length.

Further, the packing 6 is bonded to the upper side of the waterproof sheet 4 on the wall of the lower-floor building unit U1,
It is provided to a position where both ends of the on-wall waterproof sheet 4 are left slightly.

FIG. 1 is a longitudinal sectional view showing the butting portion of the outer wall panel 1 of the lower-floor building unit U1 and the outer wall panel 1 of the upper-floor building unit U2, and corresponds to the II sectional view of FIG. In this abutting portion, a splicing waterproof sheet 7 such as butyl tape is used.
And draining material 8 such as a bent product of polypropylene resin 8
And a waterproof treatment comprising a joint packing 9 of urethane resin foam or the like.

As shown in FIG. 5, the draining material 8 includes a back vertical piece 81 facing the back surface of the joint outer wall material 3, a horizontal piece 82 facing the upper surface of the joint outer wall material 3, The front vertical piece 83 facing the surface is formed in a groove shape into which the upper end of the joint outer wall material 3 can be inserted.
Is bent at a gentle inclination angle toward the front vertical piece 83 side. The draining material 8 is provided so as to straddle the upper end portion between the outer wall panels 1 of the lower-floor building unit U1, and the back vertical piece 81 is formed on the front side of the wall splicing waterproof tape 22 and the wall. It is adhered to the upper end of the end protection waterproof tape 23.

The above-mentioned on-wall waterproof sheet 7 is provided so as to straddle the on-wall waterproof sheet 4 provided at the upper end of the left and right outer wall panels 1. The spliced waterproof tape 22 and the horizontal and front and vertical pieces 83 of the drainer 8 are bonded to each other in an L-shaped manner. That is, the outer wall panel 1
The gap between the upper surface of the joint outer wall material 3 and the upper surface of the outer joint wall material 3 is waterproofed by the upper joint waterproof sheet 7.

The joint packing 9 is provided between the packings 6 provided at the upper end portion between the left and right outer wall panels 1 so as to be in close contact with these packings 6. Adhered to.

That is, the butting portions of the upper and lower outer wall panels 1
A waterproof sheet 5 under the wall and a waterproof tape 23 at the end of the wall;
Since the waterproofing is performed twice by the packing 6 and the joint packing 9, the adhesion of the waterproof sheet under the wall 5 and the waterproof tape 23 at the end of the wall may be peeled off. Even if water enters, the packing 6 and the joint packing 9 can reliably prevent rainwater from reaching the indoor side. In addition, the gap between the upper surface of the outer wall panel 1 and the upper surface of the joint outer wall material 3 is
Since the waterproofing is performed by the wall splicing waterproof sheet 7, even if rainwater enters the abutting portion of the upper and lower outer wall panels 1, the rainwater travels through the gap between the outer wall panel 1 and the splicing outer wall material 3 to cause the outer wall to leak. It can be prevented from entering the inside.

A procedure for waterproofing an outer wall in a unit building will be described below with reference to FIGS.

First, in the process of assembling the lower-floor building unit U1 and the upper-floor building unit U2 in the factory, the wall-end waterproof plate 21, the on-wall waterproof sheet 4, the under-wall waterproof sheet 5, and the packing 6 are attached to each building unit. (See FIG. 6).

Then, at the construction site, first, the lower-floor building unit U1 is installed on the foundation,
At the abutting portion of the left and right outer wall panels 1, a waterproofing tape 22, a waterproofing tape 24, and a waterproofing tape 23 are bonded and waterproofed, and a drainer 8 and a packing 9 are also bonded. (See FIGS. 7 to 9).

Next, the upper-floor building unit U2 is installed on the lower-floor building unit U1.
2. Wall end joint waterproof tape 23, wall bottom joint waterproof tape 24
Are sequentially bonded to perform waterproof treatment, and the draining material 8 and the joint packing 9 are also bonded.

Thereafter, the lower end of the waterproof sheet 5 below the wall of the upper building unit U2 is adhered to the waterproof sheet 4 above the wall of the lower building unit U1. The part 231 is bonded to the front side of the spliced waterproof sheet 7 on the wall of the lower-floor building unit U1, thereby waterproofing the butted portions of the upper and lower outer wall panels 1 (see FIG. 10).

Then, the roof unit U3 is installed on the upper-floor building unit U2, waterproofing is performed between the left and right roof units U3 and between the upper-floor building unit U2 and the roof unit U3. The joint outer wall material 3 is stored and fixed in the concave portion 2 between the left and right outer wall panels 1, and the joint outer wall material 3 is stored and fixed in the concave portion 2 between the left and right outer wall panels 1 of the upper floor building unit U2 (see FIG. 11).

Although not shown, a decorative cover for concealing the lower wall waterproof sheet 5 and the lower end 231 of the wall end joint waterproof tape 23 is attached to the abutting portions of the upper and lower outer wall panels 1. .

In other words, in the waterproof structure of the outer wall according to the present embodiment, the lower end of the waterproof tape 23 is bonded to the drainer 8 fixed to the outer wall panel 1.
When waterproofing the outer wall in the unit building, installation work of the upper-floor building unit U2 and lower-floor building unit U1, installation work of the roof unit U3, and waterproofing work of the butt portion of the outer wall panel 1 at the joint of each unit. After the completion of the above, it is possible to carry out the construction procedure of performing the attaching work of the joint outer wall material 3. As described above, by performing the installation work of the roof unit U3 before the installation work of the joint outer wall material 3, the possibility of being damaged by rainfall during the construction can be reduced.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example,
In the embodiment, an example in which the present invention is applied to the outer wall of a unit building is shown. However, the present invention is not limited to the unit building as long as the outer wall is constituted by a plurality of outer wall panels 1. Further, even in the case of a unit building, the present invention can be applied not only to a two-story building but also to a three-story or more building. In addition, the shape, material,
Any suitable manufacturing method can be selected as long as the outer wall is suitable.

[0040]

As described above, according to the present invention, it is ensured that rainwater permeates into the butted portion of the outer wall panels in the outer wall in which the outer wall material is stored and fixed in the recess between the left and right outer wall panels. This has the effect of preventing it.

Further, according to the present invention, since the joint outer wall material can be attached after the waterproofing process of the butted portions of the upper, lower, left and right outer wall panels is completed, the work procedure is not restricted, and the work efficiency is reduced. This is also advantageous in that the effect is improved. For example, in the case of building a unit building, after completing the work of installing the building unit and the roof unit and the work of waterproofing the butted portion of the outer wall panels at the unit joint, the work of attaching the joint outer wall material to the unit joint is performed. Thus, by performing the installation work of the roof unit before the installation work of the joint outer wall material, it is possible to avoid a prolonged construction period due to the influence of weather.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view (a cross-sectional view taken along the line II of FIG. 3) showing abutting portions of upper and lower outer wall panels.

FIG. 2 is an overall view showing a two-story unit building.

FIG. 3 is a cross-sectional view showing a butted portion of left and right outer wall panels.

FIG. 4 is a cross-sectional view (a cross-sectional view taken along line IV-IV in FIG. 3) showing a butted portion of upper and lower outer wall panels.

FIG. 5 is a perspective view showing a drainer.

FIG. 6 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

FIG. 7 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

FIG. 8 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

FIG. 9 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

FIG. 10 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

FIG. 11 is a diagram showing a construction procedure when waterproofing an outer wall in a unit building.

[Description of Signs] U1 Lower-floor building unit U2 Upper-floor building unit U3 Roof unit 1 Outer wall panel 11 Outer wall material 12 Wall frame material 2 Depression 22 Wall splice waterproof tape (wall splice waterproof material) 23 Wall end splice waterproof tape ( Wall joint waterproofing material) 24 wall joint waterproofing tape (wall joint waterproofing material) 3 joint outer wall material 4 wall waterproof sheet 5 wall below waterproof sheet 6 packing 7 wall joint waterproof sheet 8 draining material 81 back vertical piece 82 horizontal piece 83 Table vertical piece 9 joint packing

Claims (5)

[Claims] 1. A back vertical piece facing a back surface of a joint outer wall material stored and fixed in a recess provided between outer wall materials of left and right outer wall panels, and a horizontal piece facing an upper surface of the joint outer wall material. A draining material having a front and a vertical piece facing the surface of the joint outer wall material. 2. An outer wall panel having a wall frame member and an outer wall member fixed to the wall frame member, wherein a side end of the outer wall member is set back from a side end of the wall frame member. A concave portion is provided between the outer wall materials of the left and right outer wall panels, and the joint outer wall material is stored and fixed in the concave portion, and the butting portion of the upper and lower outer wall panels and the butting portion of the upper and lower joint outer wall materials are horizontally continuous. A waterproof structure of an outer wall provided with a waterproof joint, wherein abutting portions of left and right outer wall panels are bonded so as to straddle the left and right outer wall panels. The draining material according to claim 1 is fixed on the upper surface, and a lower end portion of the splice waterproofing material between the upper outer wall panels is bonded to a front vertical piece of the draining material between the lower outer wall panels. Outer wall waterproof structure. 3. A joint on a wall bonded so that a gap between an upper surface of the outer wall panel and an upper surface of the joint outer wall material straddles an upper surface of the outer wall panel and an upper surface of a horizontal piece of the draining material. 3. The waterproof structure for an outer wall according to claim 2, wherein the waterproof material is waterproofed with a waterproof material, and the on-wall joint waterproof material is continuous with the on-wall waterproof material provided along the upper surface of the outer wall panel. 4. The packing according to claim 2, wherein a packing is continuously adhered along the joint on the wall and the waterproof on the wall, and the butted portions of the upper and lower outer wall panels are waterproofed by the packing. Outer wall waterproof structure. 5. The outer wall panel of a unit building comprising a building unit and a roof unit, wherein the outer wall panel is
The butting portion of the outer wall panel and the butting portion of the joint outer wall material are provided at a joining portion of the unit.
5. The waterproof structure of the outer wall according to 4.