JPH0637149Y2 - Waterproof device for flat roof etc. - Google Patents

Description

TECHNICAL FIELD The present invention relates to a waterproof device for a flat roof or the like.

2. Description of the Related Art Conventionally, for waterproofing a flat roof on which a person can walk, for example, a waterproof sheet made of a polyvinyl chloride-coated steel sheet having high strength (hereinafter referred to as a vinyl chloride steel sheet) is used, and a waterproof sheet of A required number of rectangular waterproof sheets are adjacent to each other on the surface. They are laid side by side with a gap of a predetermined width between them, and the gap is filled with sealing material, and the four side edges of each waterproof sheet are opened. The belt-like connecting sheet is fixed to the wall to be waterproofed by fasteners such as nails, and the polyvinyl chloride belt-like connecting sheet is placed over the gap above the side edges of the adjacent waterproof sheets to be connected to each other. It was joined to the side edge portions of the adjacent waterproof sheets via an adhesive.

However, in general, a vinyl chloride steel plate uses a steel plate which is a metal as a core material, and therefore has a very large expansion and contraction due to a temperature difference due to a temperature difference between day and night or a seasonal change,
Therefore, the temperature difference causes a so-called bulge in the waterproof sheet, which makes it difficult for a person to walk, or the appearance of the waterproof sheet is very poor. There was a problem of being damaged. In addition, since the sealing material filled in the gap between the connecting side edges of the adjacent waterproof sheets and the strip-shaped connecting sheet covered with this are both flammable substances, the flame retardancy of flat roofs that conforms to the flame retardancy standard. There was a problem that waterproof construction was not possible.

Object of the Invention The object of the present invention is to solve the above problems and to waterproof a wall such as a flat roof by using a waterproof sheet made of a synthetic resin coated metal sheet such as a vinyl chloride steel sheet having high strength. It can maintain excellent waterproofness for a long time without hindering expansion and contraction due to the temperature difference, and has a very beautiful appearance and excellent design.
Further, it is an object of the present invention to provide a waterproof device for a flat roof or the like, which can be fire-retardant waterproofed.

In order to achieve the above-mentioned object, the invention is such that a required number of rectangular waterproof sheets made of synthetic resin-coated metal plates are adjacent to the surface of a wall to be waterproofed such as a flat roof with a predetermined gap between them. A strip-shaped connecting sheet having stretchability across the gap is arranged below the side edges of adjacent waterproof sheets to be connected to each other, and one of the four side edges of each waterproof sheet is arranged. The same side edge of the connecting sheet is fixed to the wall by the fixing tool below the side edge or the two side edges arranged at a right angle, and the strip-like connecting sheet below the remaining side edge is the wall. The side edges that are not fixed to each other and should be connected to each other are joined to the fixed or non-fixed belt-like connecting sheets that straddle the gap below them, and the sealing material is filled in the gap between the adjacent waterproof sheets. Has been The main point is a waterproof device for roots.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

In this specification, front and rear and left and right are based on FIG. 2, the front means the lower side in FIG. 2, the rear means the upper side, the left means the left side in the figure, and the right means the right side.

1 and 2 showing the first embodiment of the present invention,
On the surface of the wall (1) to be waterproofed of the flat roof, for example, a required number of rectangles made of a synthetic resin-coated metal plate such as a steel plate having a length of 2 m and a width of 1 m and covered with polyvinyl chloride or fluororesin. Adjacent waterproof sheets (2) are laid side by side with a predetermined gap (3) between them. Here, the gap (3) has a width that allows expansion and contraction of the waterproof sheet (2) due to a temperature difference.

Below the side edges (2a) (2a) to be connected to each other of the adjacent waterproof sheets (2) (2), a stretchable band-like connecting sheet (4) is arranged across the gap (3). . Below the rear side edge (2a) of each waterproof sheet (2), the same side edge (4a) of the connecting sheet (4) is attached to the wall (1) by a fixing tool (6) such as an open leg nail or a curl plug. ) Fixed,
The strip-shaped connecting sheet (4) on the lower side of the remaining side edge portion (2a) is not fixed to the wall (1) and is adjacent to the waterproof sheet (2).
The side edges (2a) (2a) of (2) to be connected to each other are bonded to the fixed or non-fixed belt-like connecting sheet (4) across the gap (3) via the adhesive (7) on the lower side thereof. Has been done. The sealing material (5) is filled in the gap (3) between the adjacent waterproof sheets (2) and (2).

The wall (1) of the flat roof to be waterproofed is usually made of concrete, but may be made of other materials such as precast concrete board and lightweight cellular concrete board.

As the belt-shaped connecting sheet (4), a sheet made of a thermoplastic synthetic resin such as soft polyvinyl chloride or a non-vulcanized rubber sheet is used, but a sheet made of soft polyvinyl chloride is used particularly in terms of adhesiveness. Preferably. The strip-shaped connecting sheet (4) has, for example, a width of 100 mm and a thickness of about 1.0 to 2.0 m.
m.

As the adhesive for joining the waterproof sheet (2) and the belt-shaped connecting sheet (4), silicone-based, urethane-based or rubber-based adhesive or the like may be used, but especially the waterproof sheet (2) and the connecting sheet (4) may be used. When both joint surfaces are made of vinyl chloride resin, vinyl chloride resin, or a copolymer of vinyl chloride and vinyl acetate, ethylene or propylene can be used alone or in a mixed solvent such as tetrahydrofuran, methyl isobutyl ketone, toluene and cyclohexanone. Dissolves and its viscosity is 1500-5000cps, preferably 2000-4000c
It is desirable to use a solution adhesive that is ps. The amount of the adhesive applied is 100 to 600 g / m ² , preferably 300 to 400 g / m ² .
m ² .

When the viscosity of the solution adhesive containing the vinyl chloride resin or its copolymer is less than 1500 cps, the gap filling property is poor and sufficient watertightness cannot be obtained after the adhesion. Again 5000 cps
If it exceeds, the viscosity is too high and the coating workability is deteriorated, which is not preferable.

If the coating amount of the adhesive is less than 100 g / m ² , not only sufficient adhesive strength cannot be obtained, but also the watertightness is insufficient,
There is a risk of water leakage. ^{On the other hand} , if it exceeds 600 g / m ² , the vinyl chloride resin coating layer on the surface of the vinyl chloride steel sheet swells and rolls up due to the solvent in the adhesive, and this peels off, which is not preferable.

The strip-shaped connecting sheet (4) is passed to the adjacent waterproof sheets (2) and (2), and the substantially entire upper surface thereof is joined to the waterproof sheets (2) and (2), but the invention is not limited to this. A non-joining sheet (not shown) made of, for example, kraft paper having a width narrower than the width of the connecting sheet (4) is previously attached to the connecting side edges of the adjacent waterproof sheets (2) and (2) via an adhesive. Respectively, and only the both side edges of the connection sheet (4) are waterproofed with the adhesive layer (7) without connecting the width center part of the strip-shaped connection sheet (4) corresponding to this non-bonding sheet. It may be joined to the sheet (2). According to the latter, the non-bonding portion of the connecting sheet (4) corresponding to the width of the non-bonding sheet made of kraft paper or the like becomes large. Most of the connection side edge of the connecting sheet (4) is adhered to the waterproof sheet (2), and the adhesive portion expands and expands integrally with the waterproof sheet, but the width of the non-joining sheet does not increase. The corresponding non-bonded portion of the connecting sheet (4) is in a so-called free state, and the amount of elongation of the connecting sheet (4) increases accordingly. As a result, the connecting sheet (4) has an advantage that it can easily follow the expansion and contraction of the waterproof sheet (2).

The sealing material (5) may be made of the same material as the solution adhesive containing a vinyl chloride resin and a solvent and having a higher viscosity.
Further, it is of course possible to use a general silicone-based, acrylic-based or urethane-based sealing material.

FIG. 3 shows a second embodiment of the present invention. Here, the point different from the case of the first embodiment is that two rear side edges (2a) arranged at right angles of each waterproof sheet (2) laid on the surface of the wall (1) of the flat roof to be waterproofed. ) And the right side edge (2a) below, the same side edge (4a) of the connecting sheet (4) is fixed to the wall (1) by a fixture (6).

Since the other points of the second embodiment are similar to those of the first embodiment, the same components are designated by the same reference numerals in the drawings.

In the two embodiments described above, according to the waterproof device of the present invention, one side edge portion (2a) of the waterproof sheet (2) made of a synthetic resin coated steel plate or two side edge portions (2) arranged at a right angle.
a) is joined to the fixed connection side edge of the strip-shaped connecting sheet (4) fastened by the fixture (6) via the adhesive layer (7) and fastened to the wall (1) of the flat roof to be waterproofed. And
The remaining three side edges (2a) or two side edges (2a) of the waterproof sheet (2) are joined to the non-fixed connection side edges of the strip-shaped connecting sheet (4), so to speak, in a free state. Has been done. Moreover, a gap (3) is provided between the side edges (2a) of adjacent waterproof sheets (2). Therefore, when a temperature difference occurs in the environment, the core material made of the steel sheet of the waterproof sheet (2) expands and contracts. In this case, the fixed connection side edge of the strip-shaped connecting sheet (4) stopped by the fixing tool (6). Expansion and contraction of one side edge portion (2a) or two side edge portions (2a) arranged at a right angle of the waterproof sheet (2) joined to the portion via an adhesive layer (7) are suppressed, and the waterproof sheet The remaining three side edges (2a) or two side edges (2a) of (2) and most of the intermediate portion of the waterproof sheet (2) are, so to speak, free, and adjacent to each other. Since the gap (3) between the edge portions functions as a relief function, the core material made of the steel sheet of the waterproof sheet (2) is slightly deformed (because the fixed side edge portion does not expand or contract), It can be expanded and contracted sufficiently. Therefore, as in the conventional case where the four side edge portions of the waterproof sheet are fixed to the walls to be waterproofed by the fixtures, respectively, the waterproof sheet (2) is swollen by expansion or contracted by contraction. (6) does not come off at all.

FIG. 4 shows a third embodiment in which the present invention is applied to a flameproof waterproof construction of a flat roof. In the third embodiment, the adhesive seal material (5) of the seal material (5) of the first embodiment is used, and the connecting side edge portions of the adjacent waterproof sheets (2) and (2) are used. A flame-retardant strip-shaped covering sheet (8) made of a synthetic resin-coated steel sheet whose both surfaces are coated with polyvinyl chloride, a fluororesin or the like is covered with the strip-shaped covering sheet (8) and bonded to the sealing material (5). It is forced. Therefore, in this case, since the sealing material (5) does not appear on the surface of the roof, the entire flat roof complies with the flame retardancy standard of the building.

Further, since the strip-shaped cover sheet (8) is only joined to the sealing material (5) and is not joined to the connecting side edge portions of the waterproof sheets (2) and (2), the waterproof sheet (2) described above is used.
The expansion and contraction due to the temperature difference of (2) can be freely performed in the same manner.

In this case, a non-adhesive resin paint such as a fluororesin or a silicone resin is previously applied to the upper surfaces of the adjacent side edges of the adjacent waterproof sheets (2) and (2), and the release treatment is performed, and then the band-shaped cover sheet. It is desirable to join (8) and the sealing material (5) to each other.

Since the other points of the third embodiment are similar to those of the first embodiment, the same components are designated by the same reference numerals in the drawings.

5 and 6 show a modification of the third embodiment. Here, the difference from the case of the third embodiment is that
The side edge portion of the connecting sheet (4) fixed to the wall (1) to be waterproofed is reinforced by a reinforcing plate (9) made of a metal plate such as a hard synthetic resin plate or a steel plate. That is, in the modified example of FIG. 5, the reinforcing plate (9) is embedded in the fixed side edge of the connecting sheet (4), and in the modified example of FIG. 6, the fixed side edge of the connecting sheet (4). A reinforcing plate (9) is joined to the lower surface of the.

Since the other points of these modified examples are the same as those of the above-described third embodiment, the same components are denoted by the same reference numerals in the drawings.

In addition, the connecting sheet (4) with the reinforcing plate (9) of the modified examples of FIGS. 5 and 6 is the same as the first embodiment shown in FIGS. 1 to 3 above.
The same applies to the embodiment and the second embodiment.

Further, in the third embodiment shown in FIG. 4, the waterproof sheet (2) arranged in the central portion of the wall (1) to be waterproof of the flat roof is shown. The waterproof sheet (2) is attached to 1) as follows.

That is, first, as shown in FIG. 7, in the peripheral portion of the flat roof, a hanging wall (11a) and a horizontal wall (11b) made of the same material as the normal waterproof sheet (2) and having a water draining portion (14) at the tip. ) Is used for the terminal waterproof sheet (11) having a substantially L-shaped cross section, and the horizontal wall (11) of the terminal waterproof sheet (11) is used.
b) is joined to the left half of the upper surface of the strip-shaped connecting sheet (4) fixed to the wall surface (1) to be waterproofed by a fixture (6) with an adhesive (not shown), and this terminal waterproof sheet A side edge portion (2a) of an ordinary flat waterproof sheet (2) adjacent to (11) is joined to an upper right half portion of the belt-like connecting sheet (4) with an adhesive.

Then, the gap (3) between the connecting side edge portions of the adjacent waterproof sheets (11) (2) is filled with a sealing material (5) having an adhesive property, and the flame retardance is provided so as to straddle the sealing material (5). A strip-shaped cover sheet (8) is covered with the strip-shaped cover sheet (8)
Is bonded to the seal material (5).

Next, as shown in Fig. 8, the parapet part (1
In the peripheral part having 0), the horizontal part (11b) of the waterproof sheet (11) for terminals is fixed to the upper end part of the parapet part (10) by the fixing tool (6). It is joined to the left half of the upper surface and is made of the same material as the normal waterproof sheet (2), and the upper horizontal part (12
A rising wall waterproof sheet (12) composed of a), a vertical part (12b) and a lower horizontal part (12c) is placed inside the parapet part (10), and the upper horizontal part (12a) is The upper part of the parapet part (10) is joined to the right half of the upper surface of the belt-like connecting sheet (4) which is also fixed by the fixing tool (6) for reinforcement, and the lower horizontal part (12c) of the flat roof is fixed. It is joined to the upper left half of the strip-shaped connecting sheet (4) fixed to the wall (1) to be waterproofed by the fixture (6). The side edge portion (2a) of the normal flat waterproof sheet (2) adjacent to the rising wall waterproof sheet (12) is the upper right half of the strip-shaped connecting sheet (4) of the wall (1) to be waterproofed. Are bonded to each other via an adhesive.

And similarly, adjacent tarpaulins (11) (12) and (1
2) A flame-retardant band-shaped covering sheet is filled with a sealing material (5) having adhesiveness in a gap (3) between the connecting side edge portions of (2) and straddling each sealing material (5). (8)
The belt-shaped cover sheet (8) is covered with the sealing material (5).
It has been joined to.

Further, as shown in FIG. 9, the peripheral portion of the flat roof that intersects with the side wall (15) of the second floor of the building is made of the same material as the normal waterproof sheet (2), and has a vertical portion (13a) and a horizontal portion. (1
A rising wall waterproof sheet (13) having a substantially L-shaped cross section formed by 3b) is provided along the inside of the side wall (15), and its vertical portion (13a) is fixed to the side wall (15). It is joined and fixed to the surface of the strip-shaped connecting sheet (4) fixed by. The upper end of the vertical portion (13a) is covered with a drain cover (16) made of a synthetic resin-coated metal plate or the like. Further, the horizontal portion (13b) is joined to the upper left half portion of the belt-like connecting sheet (4) fixed to the wall (1) of the flat roof to be waterproofed by the fixing tool (6). The side edge portion (2a) of the normal flat waterproof sheet (2) adjacent to the rising wall waterproof sheet (13) is the wall (1) to be waterproofed.
It is joined to the right half of the upper surface of the strip-shaped connecting sheet (4) with an adhesive. In addition, a sealing material (5) having adhesiveness is similarly filled in the gap (3) between the connecting side edge portions of the adjacent waterproof sheets (13) (2), and this sealing material (5) is The flame-retardant strip-shaped cover sheet (8) is covered and joined.

In addition, in FIG. 8 and FIG. 9 described above, the upper and lower edges of the rising wall waterproofing sheets (12) and (13) are the fixing members (6).
It is joined and fixed to the belt-shaped connecting sheet (4) fixed by, but in these cases, since the rising wall waterproof sheets (12) and (13) are bent in the middle, the temperature difference is caused. The expansion and contraction are absorbed at those bent portions, and no large deformation occurs.

Since the other points of FIGS. 7 to 9 are the same as those of the third embodiment shown in FIG. 4, the same components are designated by the same reference numerals in the drawings.

The terminal treatment method of the waterproof sheet (2) shown in FIGS. 7 to 9 is applied to the first and second embodiments shown in FIGS. 1 to 3 in exactly the same manner. It is a thing.

In addition, in each of the above-mentioned embodiments and modified examples, the case where the waterproof device according to the present invention is applied to a flat roof has been described, but the present invention is applied to a normal roof of another building, an outer wall, or a pool, a water storage tank or a heat storage tank. It is also applied to inner walls.

Effect of the Invention As described above, in the waterproof device for a flat roof or the like according to the present invention, a required number of rectangular waterproof sheets (2) made of a synthetic resin-coated metal plate are adjacent to the surface of the wall (1) to be waterproof such as the flat roof. Those placed next to each other with a predetermined gap (3) between them, and below the side edges (2a) (2a) of the adjacent waterproof sheets (2) (2) to be connected to each other, the gap (3) is provided. A stretchable strip-shaped connecting sheet (4) is arranged straddling, and one side edge (2a) of the four side edges (2a) of each waterproof sheet (2) or two sides arranged at right angles. Edge (2a) (2a)
The same side edge portion (4a) of the connecting sheet (4) is fixed to the wall (1) by the fixing tool (6) on the lower side of the connecting sheet (4), and the strip-shaped connecting sheet ( 4) is not fixed to the wall (1) and is adjacent to the waterproof sheet (2)
The side edge portions (2a) (2a) of (2) to be connected to each other are respectively joined to the fixed or non-fixed belt-like connecting sheet (4) that straddles the gap (3) on the lower side of these, and the adjacent waterproof sheet (2). Since the seal material (5) is filled in the gap (3) of (2), a waterproof sheet (2) made of a synthetic resin-coated metal plate such as a vinyl chloride steel plate having high strength is used to form a wall such as a flat roof. (1) can be waterproofed. Then, one side edge portion (2a) of each waterproof sheet (2) or two side edge portions (2a) arranged at a right angle are fixedly connected to the strip-shaped connecting sheet (4) fixed by a fixture (6). It is joined to the side edges via an adhesive layer (7) and fixed to the wall (1) of the flat roof to be waterproofed, and the remaining three side edges (2a) or two sides of the waterproof sheet (2). The side edge portion (2a) is joined to the non-fixed connection side edge portion of the strip-shaped connecting sheet (4), so to speak, in a free state. Moreover, a gap (3) is provided between the side edges (2a) of adjacent waterproof sheets (2). Therefore, when a temperature difference occurs in the environment, the core material made of the steel sheet of the waterproof sheet (2) expands and contracts. In this case, the fixed connection side edge of the strip-shaped connecting sheet (4) stopped by the fixing tool (6). Expansion and contraction of one side edge portion (2a) or two side edge portions (2a) arranged at a right angle of the waterproof sheet (2) joined to the portion via an adhesive layer (7) are suppressed, and the waterproof sheet The remaining three side edges (2a) or two side edges (2a) of (2) and most of the intermediate portion of the waterproof sheet (2) are, so to speak, free, and adjacent to each other. Since the gap (3) between the edge portions functions as a relief function, the core material made of the steel sheet of the waterproof sheet (2) is slightly deformed (because the fixed side edge portion does not expand or contract), It can be expanded and contracted sufficiently, and the expansion and contraction due to the temperature difference of most of the waterproof sheet (2) is prevented. Without, it can be maintained for a long time an excellent waterproof.
Moreover, since the strip-shaped connecting sheet (4) is arranged below the adjacent waterproof sheet (2), the appearance is very beautiful and the design is excellent.
Further, a sealing material (5) having adhesiveness is used, and a flame-retardant strip-shaped covering sheet (8) made of a vinyl chloride steel plate, a fluororesin steel plate or the like is provided at the connecting side edge of the adjacent waterproof sheets (2) and (2). By covering it, the flat roof as a whole conforms to the flame-retardant standard of the building, and there is an advantage that the flame-retardant waterproof construction is possible.

[Brief description of drawings]

FIG. 1 is a perspective sectional view of a main portion of a flat roof to which the waterproof device of the first embodiment according to the present invention is applied, which is taken along line II in FIG. FIG. 2 is a partially cutaway plan view of the same, and FIG. 3 is a partially cutaway plan view showing a second embodiment of the present invention, which corresponds to FIG. FIG. 4 is a perspective sectional view of a main portion of a flat roof to which the waterproof device of the third embodiment according to the present invention is applied, which corresponds to FIG. FIG. 5 and FIG. 6 are perspective cross-sectional views of main parts of a flat roof showing two modified examples of the strip-shaped connecting sheet. FIG. 7 to FIG. 9 are cross-sectional views of the essential parts of the flat roof showing an example of the terminal treatment of the waterproof sheet in the third embodiment. (1) …… Wall of a flat roof to be waterproofed, (2) …… Waterproof sheet (synthetic resin coated metal plate), (2a) …… Side edge, (3)
…… Gap, (4) …… Strip connection sheet, (4a) …… Side edge, (5) …… Seal material, (6) …… Fixing tool, (7)…
… Adhesive layer, (8) …… Band-shaped cover sheet, (9) …… Reinforcement plate, (11) …… Terminal waterproof sheet, (12) (13) ……
Waterproof sheet for rising walls.

Claims (1)

[Scope of utility model registration request] 1. A surface of a wall (1) to be waterproof, such as a flat roof,
Adjacent ones of a required number of rectangular waterproof sheets (2) made of synthetic resin-coated metal plates are laid side by side with a predetermined gap (3) between them, and the sides of the adjacent waterproof sheets (2) and (2) to be connected to each other Below the edge portions (2a) (2a), a band-shaped connecting sheet (4) having elasticity is arranged across the gap (3), and the four side edge portions (2a) of each waterproof sheet (2) are One side edge (2a) or two side edges (2a) arranged at a right angle
On the lower side of (2a), the same side edge (4
While a) is fixed to the wall (1) by the fixing tool (6), the strip-shaped connecting sheet (4) below the remaining side edge portion (2a) is not fixed to the wall (1) and is adjacent to the wall (1). Adjacent side edge portions (2a) (2a) of the waterproof sheets (2) (2) to be connected to each other are joined to fixed or non-fixed belt-like connecting sheets (4) that straddle the gap (3) below them. Sealing material (5) in the gap (3) between the waterproof sheets (2) and (2)
A waterproof device for flat roofs, etc.