JPH08170377A - Water proof construction of exterior wall joint section and water drip sheet - Google Patents

Abstract

PURPOSE: To make it possible to carry out work simply and speedily and to obtain good and sure waterproofness by arranging opposite a pair of water drip sheets between both vertical butt end faces of adjacent wall panels, inserting a gasket between them, and folding the water drip sheets to an outdoor side to constitute elastic sections. CONSTITUTION: A pair of water drip sheets 3 and 3' are stuck on wall materials or vertical butt end faces 2a and 2a' of wall panel 2 and 2' through waterproofing adhesive layer 4, and a sponge rubber gasket 5 is inserted between the water drip sheets 3 and 3' from the outdoor side. The end edges on the indoor side of the water drip sheets 3 and 3' are folded to the outdoor side to constitute elastic sections 3c having an approximately U-shaped section brought into contact with the gasket 5, and the gasket 5 is pushed and held. The vertical butt end faces 2a and 2a' and water drip sheets 3 are connected in a watertight state through the waterproofing adhesive layers 4, and since the water drip sheets 3 and gasket 5 are kept in a pressure-welding state with the elastic sections 3c of the water drip sheets 3 to maintain better waterproofness, even if the slippage occurs between the wall panel 2 and wall panel 2' adjacent thereto, waterproofness can be maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for an outer wall joint portion for closing a gap between a wall material or a wall panel and a wall material or a wall panel adjacent to the wall material or the wall panel for waterproofing, and this waterproof structure. The present invention relates to a draining sheet used for.

[0002]

2. Description of the Related Art Conventionally, as this type of waterproof structure, a so-called wet waterproof structure in which cement mortar is applied to the outer wall joint and a so-called dry waterproof structure in which a gasket is inserted into the outer wall joint from the outdoor side are known. The dry waterproof structure is widely adopted because it is easy to install and there is no risk of cracking after drying. In this dry type waterproof structure, in order to enable simple and quick construction and ensure waterproofness, for example, in JP-A-6-220928, a wall material or a wall panel and a wall material adjacent thereto are disclosed. Or, in the waterproof structure of the outer wall joint portion for closing the gap between the wall panel and the wall for waterproofing, the wall material or the wall panel or the wall panel adjacent to the vertical sill face of the wall material or the wall panel facing each other across the gap. A waterproof structure for the joints of the outer walls has been proposed in which a pair of draining sheets attached to each vertical opening are placed facing each other, and a gasket is inserted between these draining sheets from the outdoor side. There is.

[0003]

Although the above-mentioned waterproof structure which can be easily and quickly applied and has a certain waterproof property, the wall material or the wall panel and the wall material or the wall panel adjacent thereto are provided. If there is a gap in the layout during construction or if there is a gap after construction, there will be a gap between the gasket and the draining sheet, and there will be a chance that rainwater will enter through that gap, and there will be additional waterproofness. Improvement is desired. An object of the present invention is to provide a so-called dry type waterproof structure that can meet such demands, can be simply and quickly installed, and can obtain a more reliable waterproof effect.

[0004]

In order to achieve the above-mentioned object, the waterproof structure of the present invention closes a gap between a wall material or wall panel and a wall material or wall panel adjacent to the wall material or wall panel for waterproofing. A waterproof structure of the outer wall joint portion of the wall material or wall panel facing each other across the gap, between the vertical wall surface of the adjacent wall material or wall panel, each vertical wall surface In a waterproof structure of the outer wall joint part in which a pair of draining sheets to be adhered are arranged to face each other and a gasket is inserted between these draining sheets from the outdoor side, the indoor side edge of each of the draining sheets is folded back to the outdoor side. It is characterized in that it is configured as an elastic portion that contacts the gasket. In this case, it is preferable that the resilient portion is a folded piece having a substantially U-shaped cross section that is folded back toward the outdoor side, and each of the draining sheets is attached to a vertical wooden surface through a waterproof adhesive layer. Is preferably provided.
Further, the draining sheet of the present invention has a waterproof structure of an outer wall joint portion for waterproofing by closing a gap between a wall material or a wall panel and a wall material or a wall panel adjacent thereto.
A pair of draining sheets, which are attached to each of the vertical kerf surfaces, are arranged so as to face each other across the gap and between the vertical kerf surfaces of the wall material or wall panel and the vertical kerf surfaces of the adjacent wall materials or wall panels. A water draining sheet used for a waterproof structure of an outer wall joint portion in which a gasket is inserted between the water draining sheets from the outdoor side, and an inner edge of the water draining sheet is folded back to the outdoor side to abut against the gasket. It is characterized in that it is configured in the starting portion. in this case,
The resilient part is preferably a folded piece having a substantially U-shaped cross section.

[0005]

[Operation] Even when the wall material or wall panel and the wall material or wall panel adjacent thereto are displaced during the construction, or when the displacement occurs after the construction, the elastic part of the draining sheet acts as a gasket. The pressed state is maintained, and a gap is prevented from being formed between the draining sheet and the gasket.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a waterproof structure for a joint portion of an outer wall and a draining sheet of the present invention will be described below with reference to the drawings. 1 to 5
The example shown in FIG. 1 is an example of the case where the waterproof structure of the present invention is applied to waterproof the room unit of the unit building and the joint portion of the outer wall formed between the room units. Each shows a room unit and a room unit adjacent to it, and these outer wall panels 2, 2'are
They are installed adjacent to each other so that the vertical wood mouth surfaces 2a and 2a 'face each other. In the figure, 21, 22, 2
Reference numerals 3 and 24 denote vertical frames that form the outer wall panel 2, respectively.
21 ', 22', showing the surface material, coating layer, inner wall plate,
Reference numerals 23 'and 24' respectively denote a vertical frame, a face material, a coating layer, and an inner wall plate which constitute the outer wall panel 2 '.

The water draining sheet 3 of the present invention is adhered to the vertical wood surface 2a, 2a 'of the adjacent outer wall panels 2, 2'through a waterproof adhesive layer 4 made of a butyl rubber sheet,
Sponge rubber (E
A hollow cylindrical gasket 5 (PDM foam) is inserted from the outdoor side.

The draining sheet 3 is made of a non-stretched polypropylene sheet (casting polypropylene sheet) having a thickness of about 0.4 mm, and has a cross-sectional shape as shown in FIG. Of the fixed portion 3a, the locking portion 3b extending from the wood surface 2a, 2a 'to the outside of the outer wall panel 2, 2'and folded back along the coating layer 23, 23', and the indoor side edge. It is composed of a resilient part 3c made of a resilient piece that is folded back to the outdoor side so as to come into contact with the gasket 5, and the pair of resilient parts 3c, 3c serves to seal the gasket 5 together. Hold the pressure. In addition, the elastic units 3c, 3
The c'also has a function as a pawl material for applying the gasket 5 at a fixed position.

Further, in the present embodiment, the butyl tape 6 is attached by straddling the engaging portions 3b, 3b of the draining sheets 3, 3 to close the gap between the engaging portions 3b, 3b. A decorative molding 7 was attached from above so as to cover the outer wall joints to ensure waterproofness. In addition,
Reference numeral 8 in the drawing denotes a bracket fixed to the outer wall panels 2 and 2 ′ with nails 9 for attaching the decorative molding 7.

According to the waterproof structure constructed as described above, the vertical wood mouth surfaces 2a, 2a 'and the draining sheet 3 are water-tightly joined to each other through the waterproof adhesive layer 4, and the draining sheet 3 and the gasket 5 are joined together. The pressure-contact state is maintained by the resilient part 3c of the draining sheet 3, and extremely good waterproofness can be obtained. Further, since the gasket 5 is pressed and sandwiched by the elastic portions 3c, 3c of the pair of draining sheets 3, 3, the pressure contact state between the gasket 5 and the draining sheet 3 is always maintained, which is extremely waterproof. In particular, even when the outer wall panel 2 and the outer wall panel 2'adjacent to the outer wall panel 2'are displaced during the construction, or even after the construction, as shown in FIGS. 4 and 5, The pressure contact state between the gasket 5 and the draining sheet 3 is always maintained. 4 shows a case where a surface step is formed on the outer wall panel, and FIG. 5 shows a case where the outer wall joint is larger than the standard width.

Next, the construction procedure of the waterproof structure will be described. First, in the factory, the vertical panel 2a, 2 of the wall panel 2, 2'of the assembled room unit 1, 1 '
The fixing portion 3a of the draining sheet 3 is attached to a'through the waterproof adhesive layer 4 made of a butyl rubber sheet. At the time of this attachment, by making the locking portion 3b of the draining sheet 3 abut on the coating layers 23, 23 'of the wall panels 2, 2', the waterproof property between the wall panel 2, 2'and the draining sheet 3 Not only is it provided, but it also functions as a positioning member for the draining sheet 3. Then, each of the room units 1 and 1'is brought to the construction site and installed on the foundation. Inserting the gasket 5 from the outdoor side into the outer wall joint portion formed between the room units 1 and 1 ′ thus installed,
Further, the butyl tape 6 is attached and the decorative molding 7 is attached, and the construction of the waterproof structure is completed.

In the above-mentioned embodiment, the resilient part of the draining sheet is composed of a folded piece having a substantially U-shaped cross section, but if the gasket is watertightly pressed and sandwiched,
In particular, the shape is not limited. However, considering the ease of manufacture and the ease of inserting the gasket, the shape of the above embodiment is preferable.

Although a butyl rubber sheet is used as the waterproof adhesive layer, the material thereof is not particularly limited as long as the draining sheet can be watertightly attached and fixed to the vertical wood mouth surface such as an acrylic adhesive sheet. is not. The waterproof adhesive layer is not particularly required when the vertical grain surface is not uneven. The material and shape of the gasket are not limited to those of the above embodiment.

[0014]

As described above, according to the present invention, when the wall material or the wall panel and the wall material or the wall panel adjacent to the wall material or the wall panel are displaced during the construction, or when the construction is displaced after the construction. In addition, the state in which the elastic portion of the draining sheet is pressed against the gasket is maintained, a gap is prevented from being formed between the draining sheet and the gasket, and an excellent waterproof structure is obtained.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of an embodiment of the waterproof structure of the present invention.

FIG. 2 is a perspective view of a gasket used in the waterproof structure.

FIG. 3 is a perspective view showing a joined state of the waterproof gasket and the draining sheet.

FIG. 4 is a horizontal sectional view showing a state where the position of the wall panel of the waterproof structure is displaced.

FIG. 5 is a horizontal sectional view showing a state where the position of the wall panel of the waterproof structure is displaced.

[Explanation of symbols]

 1, 1'Room unit 2, 2'Outer wall panel 2a, 2a 'Vertical vertical mouth surface 3 Draining sheet 3a Fixed part 3b Locking part 3c Repulsive part 4 Waterproof adhesive layer 5 Gasket

Claims (5)

[Claims] 1. A waterproof structure of an outer wall joint portion for closing a gap between a wall material or a wall panel and a wall material or a wall panel adjacent to the wall material for waterproofing, and facing each other across the gap. , Between the vertical wood surface of the wall material or wall panel and the vertical wood surface of the adjacent wall material or wall panel,
In a waterproof structure of the outer wall joint portion, which is arranged so that a pair of draining sheets attached to each vertical wooden surface are opposed to each other, and a gasket is inserted between these draining sheets from the outdoor side,
A waterproof structure for an outer wall joint portion, characterized in that the indoor side edge of each of the draining sheets is folded back to the outdoor side to form an elastic portion that abuts against the gasket. 2. The waterproof structure for an outer wall joint portion according to claim 1, wherein the resilient portion is a folded piece having a substantially U-shaped cross section that is folded back toward the outdoor side. 3. The waterproof structure for a joint portion of an outer wall according to claim 1, wherein each of the drainage sheets is attached to a vertical wood mouth surface through a waterproof adhesive layer. 4. A waterproof structure of an outer wall joint portion for closing a gap between a wall material or a wall panel and a wall material or a wall panel adjacent to the wall material for waterproofing, and facing each other across the gap. , Between the vertical wood surface of the wall material or wall panel and the vertical wood surface of the adjacent wall material or wall panel,
A drainer sheet used for a waterproof structure of an outer wall joint portion, in which a pair of drainer sheets attached to each vertical wooden surface are arranged to face each other and a gasket is inserted between these drainer sheets from the outdoor side. A draining sheet, characterized in that the indoor side edge is folded back to the outdoor side to form a resilient part that comes into contact with the gasket. 5. The draining sheet according to claim 4, wherein the resilient portion is a folded piece having a substantially U-shaped cross section.