JPH0612099Y2 - 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, a waterproof sheet made of polyvinyl chloride coated steel sheet (hereinafter referred to as a vinyl chloride steel sheet) having high strength has been used for waterproofing a flat roof on which a person can walk, but in this case, it is waterproof against wind pressure. It is necessary to consider the contradictory factors such as the fixing of the sheet and the flexibility of expansion and contraction due to the temperature difference of the waterproof sheet made of PVC steel sheet. Square waterproof sheets that are adjacent to each other are laid side by side with a gap of a specified width between them, and the seal material is filled in the gaps, and the side edges of each waterproof sheet are fixed by fasteners such as open-leg nails. Directly fixed to the concrete wall, on the side edges of adjacent tarpaulins that should be connected to each other,
A band-shaped connecting sheet made of polyvinyl chloride has been stopped (see, for example, JP-A-59-187946).

However, in general, a vinyl chloride steel plate uses a steel plate having a large linear expansion as a core material, and therefore, the expansion and contraction due to a temperature difference due to a temperature difference between day and night or a seasonal change is relatively large. The expansion / contraction causes the so-called wavy deformation of the waterproof sheet, which makes it difficult for people to walk, or makes the appearance very bad. There was a problem that there was a risk of being damaged.

For this reason, in the past, the waterproof sheet was shortened and used so that the deformation of the waterproof sheet itself was minimized, but this increases the number of sealing points on the side edge of the waterproof sheet by the connecting sheet, which makes waterproofing extremely difficult. However, there is a problem in that the flow of rainwater and the like is poor, and because there are many sealing points, poor sealing easily results in impaired waterproofness and the finish is not clean.

Further, in the conventional waterproof device, since the sheet material and the strip-shaped connecting sheet that are filled in the gap between the connecting side edge portions of the adjacent waterproof sheets are both combustible substances, the non-combustible waterproofing of the flat roof that meets the non-combustible standard. There was a problem that construction could not be done.

The object of the present invention is to solve the above-mentioned problems and to put a waterproof sheet made of a synthetic resin-coated metal plate such as a vinyl chloride steel plate into a so-called free state without fixing the four side edges of the waterproof sheet, and to a wall such as a flat roof. Since it can be waterproofed, and therefore does not hinder the expansion and contraction of the waterproof sheet due to the temperature difference, it does not cause wavy deformation of the waterproof sheet, it is suitable for human walking and the finish is very clean, Moreover, since it is possible to use a relatively long waterproof sheet, the number of sealing points of the waterproof sheet is small, waterproofing is very easy, the flow of rainwater etc. is smooth, and the sealing point is To provide a waterproofing device for flat roofs, etc., which is less likely to cause poor sealing and can maintain excellent waterproofing properties for a long period of time, as well as non-combustible waterproofing construction. That.

Means for Solving the Problems In order to achieve the above-mentioned object, a waterproof device for a flat roof or the like according to the present invention has a required number of rectangular waterproof sheets made of a synthetic resin-coated metal plate on the surface of a wall to be waterproofed such as a flat roof. Adjacent ones are laid side by side at a predetermined interval from each other, and both side edges of a stretchable belt-like connecting sheet arranged so as to straddle the interval between adjacent waterproof sheets are joined to the side edges of both waterproof sheets. The substantially central portion of the belt-like connecting sheet joined to at least two side edge portions of the four side edge portions of each waterproof sheet is fixed to the wall.

Here, both side edges of the belt-like connecting sheet are arranged above the side edges of the adjacent waterproof sheet, and lower surfaces of both side edges of the belt-like connecting sheet are joined to upper surfaces of the side edges of the adjacent waterproof sheet. On the contrary, both side edges of the strip-shaped connecting sheet are arranged below the side edges of the adjacent waterproof sheet, and upper surfaces of both side edges of the strip-shaped connecting sheet are arranged on the lower surface of the side edge of the adjacent waterproof sheet. It may be joined.

In the waterproof device for a flat roof or the like, the substantially central portion of the strip-shaped connecting sheet is fixed to the surface of the wall to be waterproof in a sealed state. That is, the head of the fixture for fixing the strip-shaped connecting sheet to the wall is usually covered with the sealing sheet piece, and the sheet piece is joined to the upper surface of the strip-shaped connecting sheet.

The head of the fixture may be sealed using other solvent-type sealing material, that is, a sealing material in which a synthetic resin sheet of the same material as the belt-shaped connecting sheet is dissolved in a solvent, or a normal sealing material. .

The substantially central portion of the strip-shaped connecting sheet is fixed to the wall by a fixing tool via a washer made of a synthetic resin-coated metal plate,
The lower surface of the washer is joined to the upper surface of the strip-shaped connecting sheet, and the head of the fixture is covered with the sealing sheet piece,
The sheet piece may be bonded to the upper surface of the washer.

Further, instead of the washer, a strip-shaped reinforcing plate may be joined to the substantially central portion of the strip-shaped connecting sheet, and the strip-shaped reinforcing plate may be fixed to the wall. In this case, the strip-shaped reinforcing plate is
It is arranged above or below the substantially central portion of the strip-shaped connecting sheet.

Further, the stretchable belt-like connecting sheet for connecting the side edge portions of the adjacent waterproof sheets is covered with the non-combustible cover sheet, and one side edge portion of the non-combustible cover sheet is the side edge portion of the waterproof sheet on the same side. The waterproof device such as a flat roof may have a non-combustible structure as a whole.

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

In addition, an example shows the case where this invention is applied to waterproof construction of a flat roof.

1 and 2 showing the first embodiment of the present invention,
For example, a rectangular waterproof sheet (2) having a length of 2 m and a width of 1 m is laid on a surface of a wall (1) to be waterproofed of a flat roof with a required number of spaces (3) between adjacent ones. . These waterproof sheets (2) are made of metal plates such as steel plates whose both surfaces are coated with a synthetic resin such as polyvinyl chloride or fluororesin.

Here, the gap (3) has a width of, for example, 30 to 60 mm that allows expansion and contraction of the waterproof sheet (2) due to a temperature difference.

Then, on the upper side of the side edge portions (2a) (2a) to be connected to each other of the adjacent waterproof sheet (2) (2), a belt-like connecting sheet (4) having elasticity across the gap (3) is arranged, The lower surface of both side edge portions (4a) (4a) of the strip-shaped connecting sheet (4) is attached to the upper surface of the side edge portions (2a) (2a) of the adjacent waterproof sheet (2) (2) via an adhesive (7). While being joined to each other, the approximately central part of the strip-shaped connecting sheet (4) is fixed to the wall (1) with a fixture (6) such as an open leg nail, curl and plug, and further to the head of the fixture (6). The sealing sheet piece (5) is covered, and the sheet piece (5) is joined to the upper surface of the strip-shaped connecting sheet (4).

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

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 a soft polyvinyl chloride building is used particularly in terms of adhesiveness. Preferably. The strip-shaped connecting sheet (4) has, for example, a width of 50 to 100 m and a thickness of about 1.0.
~ 2.0 mm.

As the adhesive for joining the waterproof sheet (2) and the strip-shaped connecting sheet (4), silicone-based, urethane-based or rubber-based adhesive can be used, but especially the waterproof sheet (2) and the connecting sheet.
When both joint surfaces of (4) are made of vinyl chloride resin,
Vinyl chloride resin or a copolymer of vinyl chloride and vinyl acetate, ethylene or propylene is dissolved in a single or mixed solvent such as tetrahydrofuran, methyl isobutyl ketone, toluene and cyclohexanone, and the viscosity is 1500 to 5000 cps, preferably 2000. ~ 4
It is desirable to use a solution adhesive that is 000 cps. The coating amount of this adhesive is 100 to 600 g / m ² ,
It is preferably 300 to 400 g / m ² .

When the viscosity of the solution type 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 bonding. Again 500
If it exceeds cps, the viscosity is too high and the coating workability is deteriorated, which is not preferable.

The amount of adhesive applied is 100 g / m^TwoIf less than
Not only does it not have sufficient adhesive strength, but it also has sufficient watertightness.
There is a risk of water leakage. Also 600g / m Cross over
And the solvent in the adhesive, the PVC resin coating on the surface of the PVC steel sheet
The cover layer swells and rolls up, peeling it off,
Not preferable.

FIG. 3 shows a second embodiment of the present invention. Here, the point different from the case of the first embodiment is that the adjacent waterproof sheets (2) and (2) straddle the gap (3) below the side edges (2a) and (2a) that should be connected to each other. Elastic band-shaped connecting sheet (4)
Are arranged, and both side edges (4a) (4a) of the strip-shaped connecting sheet (4)
The upper surface of each is joined to the lower surfaces of the side edges (2a) and (2a) of the adjacent waterproof sheets (2) and (2), respectively, and the strip-shaped connecting sheet.
A wall is fixed by a fixture (6) through a washer (8) made of a synthetic resin-coated metal plate of the same material as the waterproof sheet (2) in the approximate center of (4).
Fixed to (1), the lower surface of the washer (8) is a strip-shaped connecting sheet
While being joined to the upper surface of (4), the head of the fixture (6) is covered with the sealing sheet piece (5), and the sheet piece (5) is joined to the upper surface of the washer (8). There is a point.

FIG. 4 shows a third embodiment of the present invention. Here, the difference from the case of the first embodiment is that a strip-shaped reinforcing plate (9) made of a synthetic resin-coated metal plate made of the same material as the waterproof sheet (2) is provided on the upper surface of the substantially central portion of the strip-shaped connecting sheet (4). ) Is arranged, the substantially central portion of the connecting sheet (4) is a strip-shaped reinforcing plate (9) with this.
It is fixed to the wall (1) by a fixture (6) penetrating through the wall.

Further, as shown in FIG. 13, the strip-shaped reinforcing plate (9) is arranged below the substantially central portion of the strip-shaped connecting sheet (4), and the strip-shaped reinforcing plate (9) is fixed by the fixture (6). It may be fixed to the wall (1), and the lower surface of the substantially central portion of the strip-shaped connecting sheet (4) may be joined to the upper surface of the strip-shaped reinforcing plate (9) via an adhesive (7).

Further, the strip-shaped reinforcing plate (9) is made of a synthetic resin-coated metal plate as shown in the figure, but it may be made of other hard synthetic resin plate, and when it is built in the strip-shaped connecting sheet (4), it is strip-shaped. The reinforcing plate (9) may be made of a metal plate.

Since the other points of the second embodiment, the third embodiment, and the modified example are the same as those of the first embodiment, the same components are designated by the same reference numerals in the drawings.

According to the waterproof device of the present invention in the above-mentioned first to third embodiments and modifications, the stretchable belt-like connecting sheet is arranged so as to straddle the gap (3) between the adjacent waterproof sheets (2) and (2).
Both side edges (4a) and (4a) of (4) are side edges of both tarpaulins (2) and (2)
(2a) is joined to (2a), the substantially central portion of the strip-shaped connecting sheet (4) is fixed to the wall (1) by a fixture (6), and the waterproof sheet (2) is in a so-called free state. Therefore, even if a temperature difference occurs due to environmental changes, the core material made of steel sheet of the waterproof sheet (2) can expand and contract sufficiently, and the waterproof sheet (2) is wavy or fixed. Filling (6)
It does not come off, is suitable for walking by people, has a very beautiful finish, and can maintain excellent waterproofness for a long period of time.

In addition, in the said 1st Example, all the strip | belt-shaped connection sheets joined to the four side edge parts (2a) of each waterproof sheet (2).
The substantially central portion of (4) is fixed to the wall (1) by a fixture (6), but depending on the case, two or four of the four side edges (2a) of each waterproof sheet (2) or The strip-like connecting sheet (4) joined to the three side edges (2a) is fixed to the wall (1) by the fixture (6) at the substantially central portion, and is joined to the remaining side edges (2a). The connecting sheet (4) may not be fixed to the wall (1) but may be in a free state.

FIGS. 5 and 6 show a fourth embodiment in which the present invention is applied to non-combustible waterproof construction of a flat roof. In the fourth embodiment, in the flat roof waterproofing device of the first embodiment, side edges (2) of the adjacent waterproof sheets (2) and (2) to be connected to each other are further added.
a) On the upper side of (2a), a non-combustible coating sheet (10) made of a synthetic resin coated steel sheet coated with polyvinyl chloride or fluororesin is arranged so as to straddle the stretchable belt-shaped connecting sheet (4). , One side edge portion (10a) of the noncombustible coating sheet (10)
Is bonded to the same side edge portion (2a) of the adjacent waterproof sheet (2) (2) via an adhesive (7).

Therefore, in this case, since the stretchable strip-shaped sheet (4) does not appear on the surface of the flat roof, the entire flat roof complies with the nonflammable standard of the building. Further, the non-combustible cover sheet (10), only one side edge portion (10a) is joined to the same side edge portion (2a) of the adjacent waterproof sheet (2) (2), the same cover sheet (10). ) Other edge
Since (10b) is not joined to the other side edge portion (2a) of the adjacent waterproof sheet (2) (2), the expansion and contraction due to the temperature difference of the waterproof sheet (2) (2) can be freely performed in the same manner. It is done.

The nonflammable covering sheet (10) is made of the same material as the waterproof sheet (2) and has a width of, for example, 80 to 150 mm.

Further, the illustrated non-combustible cover sheet (10) has both side edges folded downward, and has vertical and horizontal connecting strip-shaped sheets.
(4) In the connection portion of (4), a cross-shaped corner covering sheet (10A) is used when seen from a plane, and the four strips (11) of the corner covering sheet (10A) have a length of Each of the waterproof sheets (2) has half the length of the short side edge (2a).

And, in the middle portion of the side edge portion (2a) on the long side of the waterproof sheet (2), a belt-shaped noncombustible intermediate cover sheet (10B) is used, and the end portion of this intermediate cover sheet (10B) is It is butted against the end of the strip (11) of the corner covering sheet (10A).

The nonflammable covering sheets (10), (10A), (10B) used are those whose side edges are folded back downward. However, the shape of the nonflammable covering sheet (10) (10A) (10B) is not limited to this, and may be any other suitable shape.

Also, as shown in FIG. 7, the end of each strip (11) of the cross-shaped nonflammable corner covering sheet (10A) and the end of the nonflammable intermediate liquid covering sheet (10B) are abutted. The non-combustible joint covering plate (1) made of the same material as the non-combustible covering sheet (10)
Arrange 2) so that it is below both seats (10A) (10B),
The upper surface of this may be bonded to the end of the intermediate covering sheet (10B) and the lower surface of the end of each strip (11) of the cross-shaped corner covering sheet (10A) via an adhesive agent. , And as shown in FIG. 8, the corner covering sheet (1
The end of each strip (11) of (0A) and the upper side of the end of the intermediate cover sheet (10B) are arranged with a non-combustible joint cover plate (13), the lower surface of which is the intermediate cover sheet (10B). ) And the upper surfaces of the ends of the strip-shaped pieces (11) of the cross-shaped corner covering sheet (10A) may be bonded via an adhesive.

Since the other points of the fourth embodiment and the modification are the same as those of the first embodiment, the same parts are designated by the same reference numerals in the drawings.

FIG. 9 shows a fifth embodiment in which the present invention is also applied to non-combustible waterproof construction of a flat roof. Here, the point different from the case of the fourth embodiment is that there is a gap between the upper and lower sides of the side edges (2a) (2a) of the adjacent waterproof sheets (2) (2) that should be connected to each other.
(3) Stretchable strip-shaped connecting sheets (4) and (4) are arranged respectively, and both side edges (4a) of each strip-shaped connecting sheet (4) are arranged.
(4a) is joined to the side edge portions (2a) and (2a) of the adjacent waterproof sheets (2) and (2), respectively, and the substantially central portion of the lower strip-shaped connecting sheet (4) is the same as that of the second embodiment. Tarpaulin as if
A washer made of a synthetic resin coated metal plate made of the same material as (2) (8)
Fixed to the wall (1) by the fixings (6) via the washer
The lower surface of (8) is joined to the upper surface of the strip-shaped connecting sheet (4), and the head of the fixture (6) is covered with a sealing sheet piece (5), and the sheet piece (5) is a washer (5). It is located on the upper surface of 8).

In the fifth embodiment, as in the case of the flat roof waterproofing device of the fourth embodiment, the adjacent waterproof sheet (2) is used.
(2) above the side edges (2a) (2a) to be connected to each other, the non-combustible cover sheet (10) is arranged across the stretchable belt-shaped connecting sheet (4), and the non-combustible cover sheet (10) ) One side edge (10a) is joined to the tarpaulin side edge (2a) on the same side as this via adhesive (7), and it is assumed that the whole flat roof complies with the non-combustible standard of the building. ing.

By the way, in the first embodiment shown in FIGS. 1 and 2, the waterproof sheet (2) arranged in the central portion of the wall (1) to be waterproofed of the flat roof is shown, but the peripheral portion of the flat roof is shown. The waterproof sheet (2) is attached to the wall (1) of FIG.
As shown in FIG. 3, it is attached as follows.

That is, first, as shown in FIG. 10, in the peripheral portion of the flat roof, a hanging wall (15a) and a horizontal wall (15b) made of the same material as the normal waterproof sheet (2) and having a water draining portion (18) at the tip. ) Is used for the terminal waterproof sheet (15) having a substantially L-shaped cross section, and the horizontal wall (15b) of the terminal waterproof sheet (15) is a fixture.
An ordinary flat tarpaulin (2) fixed to the wall (1) to be waterproofed by (6) and adjacent to the tarpaulin (15) for this terminal
The side edge portion (2a) of the sheet is arranged with a predetermined gap (3) between the terminal waterproof sheet (15), and the gap (3) is formed at the connecting side edge portion of both sheets (15) and (2). Both side edges (4a) and (4a) of the stretchable belt-like connecting sheet (4) arranged across the gap are joined together with an adhesive, and the substantially central portion of the belt-like connecting sheet (4) is opened. The sheet piece (5) is fixed to the wall (1) by a fixture (6) such as a leg nail or a curl plug, and the head of the fixture (6) is covered with a sealing sheet piece (5). Is joined to the upper surface of the strip-shaped connecting sheet (4).

In addition, the other side edge portion (2a) of the flat waterproof sheet (2) and the connecting edge portion (2a) of the normal waterproof sheet (2) adjacent to this are the stretchable band-like connecting sheet ( 4) are connected in the same manner as in the case of the first embodiment.

Next, as shown in Fig. 11, the parapet part (1
In the peripheral portion having 7), the terminal waterproof sheet (1
Fix the horizontal part (15b) of 5) to the upper end of the parapet part (17).
Fixed by (6), as well as ordinary tarpaulin (2)
A rising wall waterproof sheet (16) made of the same material as the above and composed of an upper horizontal portion (16a), a vertical portion (16b) and a lower horizontal portion (16c) is placed along the inside of the parapet portion (17). ,
The upper horizontal part (16a) is arranged with a predetermined gap (3) between the terminal waterproof sheet (15), and the gap (3) is formed at the connecting side edges of both sheets (15) and (16). Both side edges (4a) and (4a) of the stretchable belt-like connecting sheet (4) arranged across the gap are joined together with an adhesive, and the substantially central portion of the belt-like connecting sheet (4) is opened. The sheet piece (5) is fixed to the wall (1) by a fixture (6) such as a leg nail or a curl plug, and the head of the fixture (6) is covered with a sealing sheet piece (5). Is joined to the upper surface of the strip-shaped connecting sheet (4).

On the other hand, the lower horizontal part (16c) of the rising wall tarpaulin (16)
And the connecting edge (2) of the normal tarpaulin (2) adjacent to it.
The a) is connected in the same manner as in the case of the first embodiment by the stretchable belt-like connecting sheet (4) straddling these.

Also, as shown in FIG. 12, in the peripheral portion of the flat roof that intersects the side wall (19) of the second floor of the building, etc., a normal waterproof sheet is used.
A rising wall waterproof sheet (20) made of the same material as (2) and composed of a vertical portion (20a) and a horizontal portion (20b) and having a substantially L-shaped cross section is provided along the inside of the side wall (19). , Its vertical part (2
0a) is fixed to the side wall (19) by a fixture (6). Further, the horizontal portion (20b) of the rising wall waterproof sheet (20) and the connecting edge portion (2a) of the normal waterproof sheet (2) adjacent to the horizontal portion (20) are stretchable band-shaped connecting sheets (4) that straddle these. Are connected in the same manner as in the first embodiment.

The head of the fixture (6) for fixing the vertical portion (20a) of the rising wall waterproof sheet (20) to the side wall (19) has the same sealing sheet piece (as in the case of the first embodiment). 5) is covered, and the sheet piece (5) is joined to the upper surface of the vertical portion (20a). Further, the upper end of the vertical portion (20a) is covered with a sealing material (21), and the entire vertical portion (20a) of the rising wall waterproof sheet (20) is made of a synthetic resin-coated metal plate or the like. It is covered by a drain cover (22).

In the case of FIG. 11 and FIG. 12 described above, since the rising wall waterproof sheets (16) and (20) are bent in the middle, the expansion and contraction due to the temperature difference are absorbed in the bent portions, and a large amount is generated. Since the deformation does not occur, not limited to the above embodiment,
Attach the upper and lower edges of the rising wall tarpaulin (16) (20) to the parapet part (17) or side wall (19) by the fixture (6).
And the wall (1) to be waterproofed.

Since the other points of FIGS. 10 to 12 are the same as those of the first embodiment shown in FIGS. 1 and 2, the same components are designated by the same reference numerals in the drawings.

The waterproof sheet (2) shown in FIGS. 10 to 12
The terminal treatment method is also applied in the same manner to the third to fifth embodiments using the nonflammable covering sheet (10).

Further, in each of the above-mentioned embodiments, the case where the waterproof device according to the present invention is applied to waterproof the concrete wall of a flat roof has been described.However, in the present invention, the roof or outer wall of a normal building whose base is plywood or the like is used. It can be applied to waterproofing, or can also be applied to waterproofing concrete walls such as inner walls of pools, water tanks or heat storage tanks.

When waterproofing the roof or outer wall of a normal building whose base is made of plywood or the like, nails or screw nails are used as the fixtures (6).

Effect of the Invention As described above, in the waterproof device for a flat roof or the like of the present invention, the 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 waterproofed, such as a flat roof. It is laid out at a predetermined interval (3) between each other,
Both side edges (4a) (4) of the stretchable strip-shaped connecting sheet (4) arranged so as to straddle the gap (3) between the adjacent waterproof sheets (2) and (2).
a) is joined to the side edges (2a) (2a) of both waterproof sheets (2) (2),
The four side edges of each waterproof sheet (2) are joined to at least two side edge portions (2a) of (2a), and the substantially central portion of the strip-shaped connecting sheet (4) is attached to the wall (1 ), A waterproof sheet made of a synthetic resin coated metal plate such as a vinyl chloride steel plate.
(2), without fixing the four side edges (2a) of this,
In other words, the wall of a flat roof can be waterproofed in a free state, so it does not hinder the expansion and contraction of the waterproof sheet (2) due to the temperature difference, and therefore, the waterproof sheet (2) does not wavy or deform. Suitable for walking by people and has a very beautiful finish.

Moreover, since a relatively long waterproof sheet (2) can be used, the waterproof sheet (2) can be sealed in a small number of places, waterproof construction is very easy, and the flow of rainwater etc. is smooth. In addition, as the number of sealed portions is small, poor sealing is unlikely to occur, and excellent waterproofness can be maintained for a long time.

And in this case, the sealing sheet piece (5) is covered on the head of the fixture (6) for fixing the belt-shaped connecting sheet (4) to the wall (1), and the sheet piece (5) is the belt-shaped connecting sheet ( By adopting a configuration in which it is joined to the upper surface of 4), sealing around the head of the fixture (6) can be reliably performed, and waterproofness can be ensured.

Further, the substantially central portion of the strip-shaped connecting sheet (4) is fixed by the fixture (6) via the washer (8) made of a synthetic resin-coated metal plate (1).
The lower surface of the washer (8) is joined to the upper surface of the belt-shaped connecting sheet (4), and the head of the fixing tool (6) is covered with the sealing sheet piece (5), and the sheet piece ( 5) is a washer
By adopting a structure that can be joined to the upper surface of (8), the fixed portion of the strip-shaped connecting sheet (4) can be reinforced by the washer (8), and therefore the waterproof property can be maintained for a longer period of time. it can.

Further, the strip-shaped reinforcing plate (9) is provided in the substantially central portion of the strip-shaped connecting sheet (4).
Are arranged, and the substantially central part of the connecting sheet (4) is a strip-shaped reinforcing plate (9).
Along with that, by adopting a structure in which the fixing member (6) is fixed to the wall (1), similarly, the fixing portion of the belt-like connecting sheet (4) can be reinforced by the belt-like reinforcing plate (9),
Therefore, the waterproof property can be maintained for a longer period of time.

Further, the non-flammable covering sheet (10) is attached to the stretchable belt-like connecting sheet (4) for connecting the side edges (2a) (2a) of the adjacent waterproof sheets (2) and (2).
And one side edge (10a) of the noncombustible covering sheet (10)
However, by adopting a configuration in which it is joined to the waterproof sheet side edge portion (2a) on the same side as this, the flat roof as a whole of the building does not hinder the expansion and contraction of the waterproof sheet (2) due to a temperature difference. Since it complies with non-flammability standards, non-flammable waterproof construction is possible.

[Brief description of drawings]

FIG. 1 is an enlarged perspective sectional view of an essential part of a flat roof to which the waterproof device according to the first embodiment of the present invention is applied, which is taken along the line II of FIG. Figure 2 is a perspective sectional view of the main part of the flat roof,
FIG. 3 is an enlarged perspective sectional view of an essential part of the second embodiment, FIG. 4 is an enlarged perspective sectional view of an essential part of the third embodiment, and FIG. 5 is an enlarged perspective sectional view of an essential part of the fourth embodiment. Is along the line VV in FIG. FIG. 6 is a perspective cross-sectional view of a main part of a flat roof to which the waterproof device of the fourth embodiment is applied, and FIGS. 7 and 8 are enlarged perspective cross-sectional views of a main part showing a modified example of the fourth embodiment. 9th
The drawing is an enlarged perspective sectional view of the essential parts of the fifth embodiment, and FIGS.
FIG. 2 is a cross-sectional view of a main part of a flat roof showing an example of terminal treatment of the waterproof sheet in the first embodiment, and FIG. 13 is an enlarged perspective cross-sectional view of a main part showing a modified example of the third embodiment. (1) …… Wall of flat roof to be waterproof, (2) …… Waterproof sheet (synthetic resin coated metal plate), (2a) …… Side edge, (3) …… Gap,
(4) …… Stretchable belt-like connecting sheet, (4a) …… Side edges, (5)…
… Seal sheet piece, (6) …… Fixing tool, (7) …… Adhesive,
(8) …… Washer, (9) …… Band-shaped reinforcing plate, (10) (10A) (10B)
...... Noncombustible covering sheet, (12) (13) …… Noncombustible joint covering plate.

Claims (7)

[Scope of utility model registration request] 1. A required number of rectangular waterproof sheets (2) made of a synthetic resin-coated metal plate on the surface of a wall (1) to be waterproofed, such as a flat roof.
Are adjacent to each other with a predetermined gap (3) between them, and are stretched and arranged so as to straddle the gap (3) between adjacent waterproof sheets (2) and (2). Both side edges (4a) (4a) are joined to the side edges (2a) (2a) of both waterproof sheets (2) (2), and the four side edges (2a) of each waterproof sheet (2) are A strip-shaped connecting sheet joined to at least two side edges (2a)
A waterproof device for a flat roof or the like, in which the approximately central portion of (4) is fixed to the wall (1). 2. The strip-shaped connecting sheet (4) is fixed to the wall (1) by a fixing device (6) with a head at a substantially central portion, and a sealing sheet piece (5) is attached to the head of the fixing device (6). The sheet piece (5) is covered with and is joined to the upper surface of the strip-shaped connecting sheet (4).
Waterproofing device for the flat roof etc. 3. The band-shaped connecting sheet (4) is fixed to the wall (1) by a fixing tool (6) through a washer (8) made of a synthetic resin-coated metal plate so that a substantially central portion of the washer (8) is secured. The lower surface is joined to the upper surface of the strip-shaped connecting sheet (4), and the head of the fixture (6) is covered with the sealing sheet piece (5), and the sheet piece (5) is the upper surface of the washer (8). The waterproof device for a flat roof or the like according to claim 1, which is joined to the. 4. The strip-shaped reinforcing sheet (9) is fixed to the wall (1) by joining the strip-shaped reinforcing plate (9) to the substantially central portion of the strip-shaped connecting sheet (4). Waterproofing device for flat roof etc. 5. The strip-shaped connecting sheet (4) has both side edge portions (4a) (4a) arranged above the side edge portions (2a) (2a) of the adjacent waterproof sheets (2) (2). The lower surface of both side edge portions (4a) (4a) of the connection sheet (4) is joined to the upper surface of the side edge portions (2a) (2a) of the adjacent waterproof sheets (2) (2). Waterproofing device for flat roof etc. 6. The both side edges (4a) (4a) of the strip-shaped connecting sheet (4) are arranged below the side edges (2a) (2a) of the adjacent waterproof sheets (2) (2), The upper surface of both side edge portions (4a) (4a) of the strip-shaped connecting sheet (4) is joined to the lower surface of the side edge portions (2a) (2a) of the adjacent waterproof sheets (2) (2). Waterproof device for flat roofs, etc. 7. An incombustible cover sheet (10) is covered on a stretchable belt-like connecting sheet (4) for connecting side edges (2a) (2a) of adjacent waterproof sheets (2) (2) to each other, and The waterproof device for a flat roof or the like according to claim 1, wherein one side edge portion (10a) of the property covering sheet (10) is joined to a side edge portion (2a) of the waterproof sheet on the same side.