JPH09177156A - Bathroom waterproofing method and waterproofing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water leakage from a bathroom by placing concrete and forming the attaching hole of a drain opening part after a concrete placing mold of the same form as the drain opening part is attached to the attaching part of the drain opening part on a cobble stone layer. SOLUTION: The downward part 81 of a concrete placing mold 80 is the same form as a trap 250, and the upward part 82 is constituted of substantially the equal form as a drain unit 25. Next, after the concrete placing mold 80 is attached to the attaching part of the drain opening part 25 on a cobble stone layer 21, an attaching hole 220 is formed in a concrete layer 22 and a mortar layer 23. Next, the trap 250 is inserted in the attaching hole 220, connected to a drain pipe 51, and a gap between the attaching hole 220 and the trap 250 is hermetically sealed with a silicon system caulking agent 27. The cavity between the attaching hole 220 and the trap 250 is filled with concrete 26. Thereby the drain opening part 25 is firmly supported on the concrete layer and water leakage can be prevented from a washing place without any crack and gap on the circumferential edge of a drain opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom waterproof construction method and a waterproof structure, and more particularly to a construction method and structure capable of reliably preventing water leakage from a bathroom.

[0002]

2. Description of the Related Art For example, in a high-rise house such as a condominium, a unit bath having an integral structure is often installed as a bathroom. However, in a single-family house, it is common for craftsmen to construct a bathroom and a changing room on site. is there. In the case of such an on-site building bathroom, water leakage may occur due to the on-site construction. However, if water leakage occurs, not only the underfloor becomes damp and wet, but the underfloor easily corrodes, and termites also easily occur.

Therefore, in the bathroom of the construction site, the bathtub and the washing room are divided by the block wall to prevent the moisture below the bathtub from flowing under the floor of the washing room, while forming the joints at the places where water leakage may occur in the washing room. Then it was waterproofed.

[0004]

However, 4 to 5 years after the construction, the base of the dressing room adjacent to the bathroom rots or termites are generated under the floor of the bathroom, which requires rebuilding of the bathroom. The reality is that

The inventor of the present invention has made various studies on the bathroom structure of the on-site building, and has come to discover that the following is the cause. That is, as shown in FIG. 6, since the drainage unit (or drainage trap) 94 with a trap in the washroom is installed by a craftsman different from the tile craftsman after the tile construction is completed, the mortar layer 92 and the concrete layer below the tile 93 are installed. When forming 91, a mounting hole having a relatively larger diameter than the outer diameter of the trap 95 is appropriately formed at the mounting position of the drainage unit 94, and the drainage unit 94 and the mortar layer 92 of the tile base and the concrete layer 91 are formed. After the sand or the like has been packed in, the gap between the drainage outlet edge and the tile 93 is closed with a loose joint 98.

However, when the body is washed in the washroom, the drainage port is often stepped on by a foot, and small cracks or the like are likely to be formed in the surrounding joint 98, but once a small amount of water leaks from the small crack. Occurs, trap 95
The surrounding sand flows out to form a cavity 97, which causes larger cracks and gaps in the seam joint 98 around the drainage port, and a large amount of water easily leaks. Moreover, due to the structure under the floor of the washroom, the water leaked from the cracks is accumulated and not discharged in the glystone layer 90, and the moisture causes the generation of termites, and the moisture also reaches the floor of the dressing room and corrodes the base. Is the cause.

In view of the above finding, it is an object of the present invention to provide a bathroom waterproof construction method and a waterproof structure capable of reliably preventing water leakage from the bathroom.

[0008]

Therefore, the bathroom waterproofing method according to the present invention has a structure in which a bathtub and a washing area are adjacent to each other, and at least a concrete layer is cast on a floor of the floor of the washing area on a ground stone layer, When installing waterproofing in the bathroom of the construction site where the drainage port is attached to the floor of the washroom and connected to the sewage pipe through the vertically extending drainage pipe; the same shape as the lower part of the drainage port and almost equal Use a concrete casting mold that has at least a lower mold part of the outer diameter dimension; after mounting the concrete casting mold at the attachment site of the drainage port on the ground stone layer, place concrete and mount the drainage port Form a hole; insert the drainage port into the mounting hole, seal the gap between the lower part of the drainage port and the mounting hole with a caulking agent, and then connect the upper part of the drainage port and the mounting hole. Between the concrete Characterized in that so as to fill.

The main leak from the bathroom is leak from the joints around the drainage outlet on the floor of the washroom. Therefore, the present invention firmly supports the drainage port portion so that cracks or gaps do not occur in the loose joints around the drainage port. That is,
The holes for mounting the drainage part, which were formed properly because of the different craftsmen, were formed into a shape similar to the drainage part using a concrete casting mold, and the gap was sealed with caulking agent, and the drainage was done. The space between the mouth and the mounting hole is filled with concrete. Therefore, the present invention is preferably applied when a house is newly built or rebuilt, but its significance is significant because it can be applied when a bathroom is renovated.

It is sufficient for the concrete pouring mold to have at least a lower mold part having the same shape as the lower part of the drain port and an outer diameter dimension substantially the same, and the shape of the upper mold part is not particularly limited. However, if the upper part of the concrete pouring mold is smaller than the drain port, it is necessary to break the surrounding concrete when mounting the drain port, which is complicated. Further, it is common to tile the concrete layer through a mortar layer. Therefore, a concrete pouring mold consisting of a lower mold part having the same shape as the lower part of the drainage port and an outer diameter dimension substantially equal to that of the drainage port, and an upper mold part having substantially the same shape as the upper part of the drainage port and larger by a predetermined dimension. It is better to use. Moreover, when the tiles are laid through the mortar layer, it is preferable to form the mortar layer in the concrete layer with the concrete casting mold attached and to form the holes for attaching the drainage port in the concrete layer and the mortar layer.

The drainage port may have any structure available on the market, for example, a drainage trap or a drainage unit with a trap can be adopted. Therefore, since the model of the drain port to be used at the time of new construction, rebuilding or repair is known,
This can be done by preparing a concrete pouring mold corresponding to it in advance. The material for the concrete pouring type is not particularly limited, but it is preferable to use a foamed synthetic resin material in consideration of cost and easiness of production because the pouring type does not require so much strength. Further, as the caulking agent, for example, a commercially available Si caulking agent can be used.

Further, according to the present invention, the waterproof structure constructed by the above-mentioned construction method, that is, the structure in which the bathtub and the washing area are adjacent to each other, and at least the concrete layer is placed on the glystone layer under the floor surface of the washing area is not provided. , In the bathroom of the field construction where the drainage port is installed on the floor of the washing floor and connected to the drainage pipe that extends vertically; the concrete layer on the ground stone layer is similar to the drainage port at the drainage port installation site Mounting hole is formed, and the drain hole is inserted into the mounting hole, and the gap between the lower part and the mounting hole is sealed with caulking agent. It is possible to provide a bathroom waterproof structure in which concrete is filled between the holes.

Even in the above-mentioned waterproof structure, there is a concern that cracks or gaps may occur at the periphery of the drainage outlet for some reason. Even in such a case, it is preferable that the leaked water be discharged to the outside so that the waste water does not accumulate in the glystone layer below the washing place.
Therefore, a waterproof sheet is laid over the entire surface of the bathroom floor in the ground stone layer below the concrete layer, and the waterproof sheet is fixed to the peripheral wall surface, for example, all or at appropriate intervals, while the waterproof sheet is placed in the center. It is preferable that the vicinity of the portion is made lower than the peripheral edge, a porous pipe is installed, and the porous pipe is connected to the sewer pipe via a drain pipe.

As the waterproof sheet, a commercially available sheet having waterproofness can be used, but it is preferable to use a sheet having a surface wave shape that facilitates the collection of water leakage in the center. The peripheral edge of this waterproof sheet can be fixed to the surrounding wall surface by using, for example, an adhesive tape.

With the above structure, water leakage in the washing area can be reliably prevented, and even if water leakage occurs, it does not accumulate under the floor of the washing area, and it is possible to prevent corrosion of the above-mentioned base and generation of termites, but moisture on the bathtub side is prevented. If it goes under the floor of the washing room or under the changing room, there is still concern about the corrosion of the base and the occurrence of termites. Therefore, below the drain of the bathtub, a funnel-shaped receiver having an upper end opening with a diameter larger than that of the bath drain is made to face the drain of the bath at a predetermined interval, and the mortar is placed on the glystone layer. Installed through the layer, once receive the drainage from the bathtub drain in the funnel-shaped receiver, and drain into the sewer pipe through the drain and drain pipe formed in the center of the bottom of the funnel-shaped receiver,
It is preferable that the substance that clogs the pipe can be accumulated and collected in the funnel-shaped receiver, and the drainage of the bathtub can be surely and smoothly discharged to the sewer pipe, so that the moisture on the bathtub side can be reduced.

Further, even if water leaks, moisture can be removed by ventilating the lower part of the bathtub and the floor of the washroom. Therefore, an opening is formed in the foundation located on the side of the funnel-shaped receiver,
It is preferable that the opening is equipped with a ventilation blocking means so that the ventilation blocking means can be opened and closed by an operation from inside the bathroom. As the ventilation blocking means, a commercially available one can be used. The operation from the bathroom can be performed, for example, by connecting a slide mechanism of the ventilation blocking means and a lever in the bathroom with a rod or a wire. If this ventilation blocking means can be attached to and detached from the foundation opening,
It is more preferable because the funnel-shaped receiver can be easily cleaned.

[0017]

According to the present invention, a caulking agent is formed by forming a mounting hole having a shape similar to that of the drain hole in the concrete layer below the floor of the bathroom washing room and inserting the drain hole into the mounting hole. Since it is sealed with and is filled with concrete, the drainage part is firmly supported by the concrete layer, so even if you step on it while washing your body, there will be no cracks or gaps around the drainage port, Water leakage can be reliably prevented. As a result, it is possible to reliably prevent the generation of termites and the corrosion of the base and improve the life of the bathroom.

If a waterproof sheet is laid all over the ground stone layer under the floor of the washing room and the water on the waterproof sheet is discharged by the porous pipe, even if water leaks from the periphery of the drain port, the cause of moisture This also improves the bathroom life.

Further, when the water in the bathtub is once received by the funnel-shaped receiver and discharged into the sewer pipe through the drainage port and the drain pipe of the funnel-shaped receiver, the substances clogging the pipe are accumulated on the funnel-shaped receiver. Since it can be collected and the drainage of the bathtub can be discharged surely and smoothly, the generation of termites and the corrosion of the base can be surely prevented by this, and the life of the bathroom can be improved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to specific examples shown in the drawings. 1 to 5 show an embodiment of the present invention. In the figure, a dressing room 11 is built on the side of the bathroom 10, and a door 12 of the dressing room 11 is opened and closed so that the bathroom 10 can enter and leave. In the bathroom 10, a washing space 20 and a bathtub 30 adjacent to the window 13 are provided.

The floor surface of the washing room 20 is constructed as a floor surface structure in which a ground stone layer 21 and a concrete layer 22 are formed on the ground GL, and tiles 24 are laid on the concrete layer 22 via a mortar layer 23. ing. In addition, a drainage unit 25 with a trap is attached to the floor of the washing place 20 on the side, and the trap 250 is connected to a sewer pipe 50 under the ground GL via a drain pipe 51 extending vertically.
There is a joint 28 between the tile 24 and the drainage unit 25.
Are formed.

This drainage unit 25 is a concrete layer 2
2 and the trap 250 is inserted into the attachment hole 220 formed in the mortar layer 23 and having a similar shape to the drainage unit to connect to the drainage pipe 51, and the gap between the attachment hole 220 and the trap 250 is made of a Si-based caulking agent. It is sealed with 27, and the cavity between the attachment hole 220 and the trap 250 is filled with concrete 26 and fixed. In addition, in order to improve waterproofness, it is preferable to seal the entire space between the drainage unit 25 and the loose joint 28 with a caulking agent.

A waterproof sheet 40 is laid over the entire surface of the washing floor 20 in the underfloor curbstone layer 21 of the washing floor 20. This waterproof sheet 40 has its peripheral edge fixed to the wall surface around the washing area 20 (the foundation or the block wall of the bathtub 30) with an adhesive tape, while the center extends in the longitudinal direction of the bathtub 30 (the direction perpendicular to FIG. 1). It is set lower than, and is inclined between the center and the peripheral edge. A porous pipe 41 is arranged to extend in the longitudinal direction of the bathtub 30 (direction perpendicular to FIG. 1) at a lower portion of the center of the waterproof sheet 40, and the porous pipe 41 is connected to the sewer pipe 50 by a drain pipe 52. Is
The water on the waterproof sheet 40 is discharged to the sewer pipe 50. The waterproof sheet 40 has a surface shape (or a cross-sectional shape) such that the corrugated shape extends toward the lower part in the center.
It is better to use a sheet of.

On the other hand, the bathtub 30 is installed on the bases 31, 31 formed on the ground GL via supporting legs. A funnel-shaped receiver 33 made of metal, preferably stainless steel, is provided below the drainage port 32 of the bathtub 30 at a predetermined interval (about 100 to 300).
mm) and are installed facing each other. This funnel-shaped receiver 33 has an upper end opening of 200 to 400 mmφ, and a drain port 34 having a diameter of about 50 mm is projected downward at the center of the bottom thereof, and the drain port 34 is inserted into the upper end of the drain pipe 53 and a plate is formed. It is held in the drain pipe 53 by a spring 378.

A ground stone layer 35 is formed on the ground GL, and a mortar layer 36 on the ground stone layer 35 is 30 to 50.
The layers are stacked on the order of mm, and the funnel-shaped receiver 33 is fixed thereon.

Further, an opening 61 is formed on the outdoor side foundation 60 of the bathroom 10 at the side of the funnel-shaped receiver 33.
A frame 71 is fixed to the peripheral edge, and a metal ventilation shield 70 is detachably attached to the frame 71 with screws or the like. This ventilation blocking means 70 is configured by stacking a fixed slit plate and a slidable slit plate, and the slidable slit plate is connected to an operation lever 72 provided in the bathroom 20 by a rod (or wire), and an operation lever. By operating 72, the slidable slit plate is slid to open / close the ventilation blocking means 70 so that the lower part of the bathtub is ventilated.

Next, the bathroom waterproofing method will be described. For example, when waterproofing the bathroom 10 when the bathroom 10 is newly constructed, the waterproof sheet 40 is laid so that the center is low and the peripheral edge is high when about half of the ground stone layer 21 is formed on the ground GL. Then, the peripheral edge is fixed to the peripheral wall surface with an adhesive tape, the porous pipe 41 is installed, and the porous pipe 41 is connected to the sewer pipe 50 via the drain pipe 51.

When the waterproof sheet 40 is laid, a green stone layer 21 is further formed on the waterproof sheet 40, and then the concrete layer 22 is formed.
At this time, the concrete placing mold 80 is set at the attachment site of the drainage unit 25, that is, near the upper end of the drainage pipe 51 extending upward from the sewage pipe 50. This concrete placing mold 80, as shown in FIGS. 2 and 3,
The lower portion 81 has the same shape as the trap 250 of the drainage unit 25 and has a shape larger than the outer diameter of the trap 250 by about 1.5 mm, and the upper portion 82 has a shape substantially the same as the drainage unit 25 and has a shape larger by about 50 mm. There is. As a result, a lower portion of the mounting hole 220 for the drainage unit 25 is formed in the concrete layer 22.

When the concrete layer 22 dries, the mortar layer 23 is formed on the concrete layer 22 with the concrete casting mold 80 set as it is. As a result, an upper portion of the mounting hole 220 is formed in the mortar layer 23. Thus the concrete layer 22 and the mortar layer 23
A mounting hole 22 having a shape similar to that of the drainage unit 25
When 0 is formed, the concrete placing mold 80 is removed, and the tile 24 is put on the mortar layer 23.

When the tile construction is completed, the drainage unit 2
5 is inserted into the mounting hole 220 to connect the trap 250 to the state of the drain pipe 51, and a suitable device such as L is provided in the gap of 1.5 mm between the lower portion of the trap 250 and the inner surface of the mounting hole 220. S using the shape nozzle
After filling the i-type caulking agent 27 and sealing the same, concrete is poured into the cavity between the drainage unit 25 and the mounting hole 220 to form the concrete filling layer 26, and then the periphery of the drainage unit 25 and the tile 24. Fill the gap between and with Noro joint 28.

On the other hand, on the side of the bathtub 30, the bases 31 and 31 are formed on the ground GL, the ground stone layer 35 is formed, concrete is poured to fix the funnel-shaped receiver 33, and then the bathtub 30 is mounted on the base. It may be set on 31, 31.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a front view showing the relationship between the drainage unit and the concrete placing mold in the above embodiment.

FIG. 3 is a side view showing a relationship between the drainage unit and a concrete placing mold.

FIG. 4 is a view showing a structure on the bathtub side in the embodiment.

FIG. 5 is a diagram showing a ventilation blocking means provided on the bath side.

FIG. 6 is a diagram for explaining a problem to be solved by the invention.

[Explanation of symbols]

10 Bathroom 11 Dressing Room 20 Washing Room 21 Green Stone Layer 22 Concrete Layer 220 Mounting Hole 23 Mortar Layer 24 Tile 25 Drainage Unit (Drainage Port) 250 Trap (Lower Part) 26 Concrete Filling Layer 27 Caulking Agent 28 Norochi Joint 30 Bathtub 33 Funnel-shaped receiver 34 Drainage port 35 Green stone layer 36 Mortar layer 40 Waterproof sheet 41 Porous pipe 50 Sewage pipes 51, 52, 53 Drain pipe 60 Foundation 61 Opening 70 Ventilation blocking means

Claims (7)

[Claims] 1. A structure in which a bathtub and a washing area are adjacent to each other, and at least a concrete layer is placed on the floor of the washing area on the ground stone layer, and a drainage port is attached to the floor surface of the washing area to extend vertically. For waterproofing in a bathroom of a construction site constructed by connecting to a sewer pipe through a pipe; a concrete pouring mold having at least a lower mold part having the same shape as the lower part of the drain port and an outer diameter dimension substantially equal to that of the lower part. Use: After mounting the concrete casting mold on the attachment site of the drainage port on the ground stone layer, pour concrete to form a mounting hole for the drainage port; insert the drainage port into the mounting hole After sealing the gap between the lower part of the drainage port and the mounting hole with caulking agent, the space between the upper part of the drainage port and the mounting hole is filled with concrete. Bathroom waterproof construction method. 2. A concrete comprising a lower mold part having the same shape as the lower part of the drainage port and an outer diameter dimension substantially equal to that of the drainage port, and an upper mold part having substantially the same shape as the upper part of the drainage port and larger by a predetermined dimension. The bathroom waterproofing method according to claim 1, wherein a casting type is used. 3. The bathroom waterproofing method according to claim 2, wherein a mortar layer is formed on the concrete layer with the concrete casting mold attached, and holes for attaching drainage ports are formed on the concrete layer and the mortar layer. . 4. A structure in which a bathtub and a washing room are adjacent to each other, and at least a concrete layer is placed on the ground stone layer under the floor surface of the washing room, and a drainage port is attached to the floor surface of the washing room to extend vertically. In the bathroom of the field construction which is connected to the sewer pipe via the pipe; the concrete layer on the ground stone layer has a mounting hole formed at the drainage port mounting site, which is similar in shape to the drainage port, and the mounting hole The drainage port is inserted into the box, the gap between the lower part and the mounting hole is sealed with caulking agent, and the space between the upper part of the drainage port and the mounting hole is filled with concrete. The bathroom waterproof structure is characterized by being 5. A waterproof sheet is further laid over the entire surface of the bathroom floor in the ground stone layer below the concrete layer, the peripheral edge of the waterproof sheet being fixed to the peripheral wall surface, while the vicinity of the central portion is the peripheral edge. 5. The bathroom waterproofing structure according to claim 4, wherein a porous pipe is installed so as to be lowered, and the porous pipe is connected to the sewer pipe through a drain pipe. 6. A funnel-shaped receiver having an upper end opening having a diameter larger than that of the bath drain is disposed below the drain of the bath and is opposed to the drain of the bath with a predetermined space between them. It is installed on the floor via a mortar layer, and drainage from the bathtub drain is once received by the funnel-shaped receiver and discharged to the sewer pipe through the drainage port and drain pipe formed at the bottom center of the funnel-shaped receiver. The bathroom waterproof structure according to claim 4, wherein the waterproof structure is formed. 7. An opening is formed in a foundation located on the side of the funnel-shaped receiver, and a ventilation blocking means is attached to the opening so that the ventilation blocking means can be opened and closed by an operation from inside the bathroom. Item 6. A bathroom waterproof structure according to item 6.