JP2873524B2 - Waterproofing method for irregularly shaped protrusions on flat roofs, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproofing method for a trapezoidal shaped projecting portion on which, for example, a support for a fence or a support for an antenna is installed on a waterproof sheet-covered flat roof.

[0002]

2. Description of the Related Art In a flat roof in which a waterproof sheet is stretched by a so-called insulating method (floating method), a trapezoidal shaped protrusion for mounting a fence support or an antenna support, that is, a support support base (so-called accessory installation base). ), A waterproof sheet has conventionally been used for waterproofing such a column mounting base.

That is, according to the conventional method, first, the upper part and the lower part of the support stand are finished with a sander, and then a primer and an adhesive are applied to these surfaces, and a waterproof sheet joint is fixed on the upper surface of the support stand. At the same time, fix the L-shaped joint at the corner between the rising wall of the support stand and the concrete wall to be waterproof around it, and cover the surface of the support stand and the surrounding concrete wall with a waterproof sheet. Attach the corner patch from the outside of the waterproof sheet to the four corners of the support stand, and finally rub the mounting base of the support pillar, and attach it to the gap between the waterproof sheet and the support base. The sealant was filled.

[0004]

However, according to such a conventional method, the work of waterproofing the column support stand is difficult.
It is very troublesome and time-consuming, and requires a lot of skill in waterproofing work.As the actual working time increases, the construction cost is high, and after waterproofing, corner patches are installed at the four corners of the support stand There was a problem that the appearance was impaired, such as appearing outside.

[0005] In view of the above points, the inventors of the present invention have conducted intensive studies in order to improve work efficiency, and as a result, a portion having a small expansion and contraction (movement) such as a support stand (an accessory) has been developed. Waterproof with a waterproof tubular body and a coating film, and a waterproof sheet is stretched on a normal part other than the support stand by the so-called insulation method (floating method), and the boundary part is
By maintaining watertightness, it has been found that a very excellent waterproof construction can be performed on a flat roof or the like, and the present invention has been completed.

According to the present invention, the work of waterproofing an irregularly shaped projecting portion such as a support stand is not troublesome, and requires only about one-third of the time required for the conventional method. Waterproofing work can be performed easily and quickly without the need for installation, and the waterproofing cost is low, and the aesthetic appearance after waterproofing is excellent. It is intended to be.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a waterproof sheet stretched flat roof and the like.
A method for waterproofing an irregularly shaped projection such as a support stand, wherein a waterproofing cylindrical body is fitted over a peripheral wall of the irregularly shaped projection and protruded upward from an upper end of the irregularly shaped projection. A synthetic resin waterproof paint was poured into the inside of the body to form a waterproof layer made of a synthetic resin waterproof coating covering the irregularly shaped protrusions, and was stretched over the wall surface to be waterproofed, such as a flat roof other than the irregularly shaped protrusions. The waterproof sheet is provided with an extension that rises along the outer surface of the waterproof tubular body, and this waterproof sheet extension is joined to the outer surface of the waterproof tubular body. The gist is the waterproof construction method for irregularly shaped protrusions.

In the above description, in order to waterproofly install a trapezoidal-shaped protruding portion on which a fence post or an antenna post or the like on a waterproof sheet-stretched flat roof or the like, that is, a strut-mounting stand (so-called accessory) portion, first, a deformed projecting portion is required. The waterproof tubular body is fitted over the peripheral wall of the portion and protrudes upward from the upper end of the irregularly shaped projection.

Here, as the waterproof tubular body, a waterproof sheet piece or a waterproof synthetic resin-coated metal plate such as a steel plate (PVC steel plate) coated on both sides with a vinyl chloride resin is used. For the waterproof sheet piece, for example, a sheet made of a thermoplastic synthetic resin such as soft polyvinyl chloride, polyethylene, or polypropylene, or a sheet made of a non-vulcanized rubber-based sheet or a rubber asphalt-based sheet is used. It is desirable to use cut pieces of soft polyvinyl chloride tarpaulin. The thickness of the waterproof sheet piece is usually about 1.0 to 2.0
mm.

In order to fit the waterproof tubular body over the irregularly shaped protrusion, usually, a belt-shaped waterproof sheet or a waterproof synthetic resin-coated metal plate is wound around the peripheral wall of the irregularly shaped protrusion.
It is preferable to join these two ends to each other to form a waterproof tubular body. In this case, the gap between the waterproof tubular body and the irregularly shaped projection is reduced by strongly winding a strip-shaped waterproof sheet piece or a synthetic resin-coated metal plate around the peripheral wall of the irregularly shaped projection while applying so-called tension. be able to.

However, in the case where there is no support at the irregularly shaped projection, for example, a waterproof sheet piece or a synthetic resin-coated metal plate which has been previously formed in a cylindrical shape may be fitted over the irregularly shaped projection.

In any of the above cases, the height of the waterproof cylindrical body projecting upward from the upper end of the irregularly shaped projection can be freely adjusted, and the height is usually 3 mm or more, preferably, 3 mm or more. 10 to 20 mm.

Next, a waterproof coating made of synthetic resin is poured into the inside of the waterproof tubular body projecting upward from the upper end of the deformed projection to form a waterproof layer made of a synthetic resin waterproof coating covering the deformed projection. I do.

Here, urethane, epoxy, acrylic urethane, acrylic silicon, and the like are used as the synthetic resin paint.

The waterproof layer made of the synthetic resin waterproof coating covers the upper surface of the irregularly shaped projection and has the same height as the upper end of the waterproof tubular body or has a slightly lower height. And a peripheral-surface-coated waterproof coating formed in a gap between the outer peripheral surface of the irregularly-shaped projection and the inner peripheral surface of the waterproof tubular body.

On the upper surface of the irregularly shaped projection on the inner side of the waterproof tubular body, so-called self-leveling of the coating layer is possible, so that a uniform waterproof coating can be formed. The thickness of the part is usually 3 mm or more, preferably 10 to 20 mm.

On the other hand, a waterproof sheet is stretched over a wall portion to be waterproofed such as a flat roof other than the irregularly shaped projection using a joint piece fixed to a required portion of the wall portion. An extension is provided that rises along the outer surface of the waterproof tubular body, and the waterproof sheet extension is joined to the outer surface of the waterproof tubular body.

Here, the waterproof sheet may be made of the same material as the waterproof sheet piece constituting the waterproof tubular body, for example, a sheet made of a thermoplastic synthetic resin such as soft polyvinyl chloride, polyethylene, or polypropylene, or A non-vulcanized rubber-based sheet, a rubber asphalt-based sheet, or the like is used, but it is preferable to use a soft polyvinyl chloride sheet, particularly in view of adhesiveness. The thickness of the waterproof sheet is, for example, about 1.0 to 2.0 mm.

The bonding piece may be a hard or semi-hard synthetic resin plate, a metal plate, or a plate material (PVC steel plate) coated on one or both sides with a vinyl chloride resin to improve adhesiveness. use. As a fixing tool for fixing such a joint piece to a concrete wall surface, an open leg nail, a curl plug, or the like is used.

The joining piece may or may not be fixed to the periphery of the irregularly shaped projection on which the waterproof tubular body is fitted.

When the joining piece is fixed to the periphery of the irregularly shaped projection, the width of the joining piece is, for example, 40 to 120 mm, and is generally arranged over substantially the entire periphery of the irregularly shaped projection as viewed from a plane. Is preferred.

When the waterproof tubular body is formed of a waterproof sheet piece or a waterproof synthetic resin-coated metal plate strip, an adhesive for joining both ends of the waterproof sheet or a waterproof sheet and a joining piece is used. The following adhesive is used as an adhesive to be joined or an adhesive to join the waterproof sheet extension portion and the outer surface of the waterproof tubular body around the irregularly shaped projection.

That is, as such an adhesive, especially when the joining surfaces of the waterproof tubular body, the waterproof sheet and the joining piece are made of vinyl chloride resin, tetrahydrofuran alone or a small amount of tetrahydrofuran is used. It is preferable to use a solvent-type adhesive in which a vinyl resin is dissolved, since an adhesive effect with excellent durability is produced. However, other general-purpose adhesives such as epoxy-based, urethane-based and rubber-based adhesives may be used.

Incidentally, a curing sheet is usually interposed between the waterproof sheet and the concrete wall surface of the flat roof to be waterproofed. The curing sheet has a curing action of protecting the waterproof sheet, and includes a foamed sheet having a thickness of 1 to 4 mm made of an independent foam of a thermoplastic resin such as polyethylene, polypropylene, polyurethane and polyvinyl chloride. Or a foamed sheet thereof and a reinforcing layer made of, for example, a film of polyethylene, polypropylene, polyvinyl chloride and polyester or a woven or non-woven fabric made of these resins, which is adhered to the entire surface by an adhesive or heating. Use a composite sheet.

[0025]

According to the above-mentioned waterproofing construction method, a waterproof tubular body is first fitted over a deformed projecting portion such as a support stand on a waterproof sheet-stretched flat roof, and then the waterproof tubular body is combined with the inside of the waterproof tubular body. A waterproof layer made of a synthetic resin waterproof coating covering the irregularly shaped protrusion is formed by pouring a resin waterproof paint. And finally,
A waterproof sheet stretched on a wall surface to be waterproofed such as a flat roof other than the irregularly shaped protrusion is provided with an extension that rises along the outer surface of the waterproof tubular body. Is bonded to the outer surface.

Therefore, according to the method of the present invention, it is easy to waterproof the rising wall (vertical wall) of the irregularly shaped projection, which is particularly difficult to apply the waterproof paint, and to waterproof the irregularly shaped projection such as a support stand. The construction work is easy and the conventional method 3
In addition to requiring only about one-half of the work time, the waterproofing work requires no skill, so that the waterproofing work can be performed easily and quickly. In addition, since the so-called self-leveling of the coating layer is possible on the upper surface of the irregularly shaped projection inside the waterproof tubular body, a uniform coating film is formed and the appearance after waterproofing is excellent.

[0027]

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

FIG. 1 shows a flat roof waterproofed by the method of the present invention, and FIG. 2 shows a state in which the flat roof is being waterproofed.

In order to waterproof the mounting stand (deformed projection) (7) of the support (15) on the flat roof (1), first, as shown in FIG. 2, the support protrudes about 10 mm above the upper end of the support (7). Then, the waterproof tubular body (10) was fitted and covered.

Here, as the waterproof tubular body (10), a strip-shaped cut piece of a 1.5 mm-thick soft polyvinyl chloride sheet (trade name: Sunroid DN sheet, manufactured by Tsutsunaka Plastics Industry Co., Ltd.) is used. The strip-shaped waterproof sheet pieces were wound around a support stand (7), and their both ends were joined to each other using a solvent-type adhesive in which a small amount of vinyl chloride resin was dissolved in tetrahydrofuran. In such a case, the waterproof tubular body (10) is wound tightly around the perimeter wall of the support stand (7) while applying tension.
The gap between the support and the support stand (7) could be reduced.

Next, a urethane resin paint (trade name: Cosmoflex-R, manufactured by Sumitomo Chemical Co., Ltd.) and a synthetic resin paint are poured into the inside of the waterproof tubular body (10) to install the pillars. A waterproof layer (11) made of a synthetic resin waterproof coating covering the table (7) was formed.

A waterproof layer (11) made of the synthetic resin waterproof coating film
Is a tubular body (10) that covers the upper surface of the support stand (7) and is waterproof.
Between the upper surface of the waterproof coating (11a), which is at the same height as or slightly lower than the upper end, and the outer peripheral surface of the support base (7) and the inner peripheral surface of the waterproof tubular body (10). And a peripheral coating film (11b) formed in the gap.

Next, a flat roof (1) other than the support stand (7)
An extension (3a) that rises along the outer surface of the waterproof tubular body (10) is provided on the waterproof sheet (3) stretched using a joint piece on the wall surface (2) to be waterproof, such as This tarpaulin extension
(3a) was joined to the outer surface of the waterproof tubular body (10). Tarpaulin
As (3), a 1.5 mm thick soft polyvinyl chloride sheet (trade name: Sunroid DN Sheet, manufactured by Tsutsunaka Plastics Industry Co., Ltd.) was used.

The adhesive for joining the waterproof sheet (3) and the joining piece, and the waterproof sheet extension (3a) are attached to the waterproof tubular body.
As the adhesive to be bonded to the outer surface of (10), a solvent-type adhesive in which a small amount of vinyl chloride resin was dissolved in tetrahydrofuran was used. This resulted in an adhesive effect with excellent durability.

There is a waterproof sheet between the waterproof sheet (3) and the concrete wall surface (2) of the flat roof (1) to be waterproofed.
(3) To protect the cured sheet consisting of a polyethylene foam sheet and a composite sheet attached to it
(6) was interposed.

According to the method of the present invention described above, it is easy to waterproof the rising wall (vertical wall) portion of the column mounting base (7), which is particularly difficult to apply a waterproof paint, and to use the column mounting table.
(7) The waterproofing work is easy and requires only one-third of the conventional method, and the waterproofing work requires no skill. Can be. In addition, the support installation stand inside the waterproof tubular body
On the upper surface of (7), the so-called self-leveling of the coating layer was possible, so that the appearance after waterproofing was excellent.

[0037]

According to the present invention, as described above, in waterproofing a stretched roof with a waterproof sheet or the like, when the irregularly projecting portion (accessory) such as a support stand is waterproofed, it surrounds the peripheral wall of the irregularly projecting portion and has an irregular shape. A waterproof tubular body is fitted so as to protrude upward from the upper end of the protrusion, and a synthetic resin waterproof paint is poured inside the waterproof tubular body to cover the irregularly shaped protrusion. Form a layer, on a waterproof sheet stretched on the wall surface to be waterproof such as a flat roof other than the irregularly shaped protrusion,
An extension that rises along the outer surface of the waterproof tubular body is provided, and this waterproof sheet extension is joined to the outer surface of the waterproof tubular body. The part with little expansion and contraction (movement) is waterproofed with a waterproof tubular body and a coating film, and a waterproof sheet is applied to the normal part other than the support stand, so-called insulation method (floating method).
It is easy to apply waterproof coating on the rising wall (vertical wall) of irregularly shaped projections, where it is difficult to apply waterproof paint. Waterproofing work on irregularly shaped projections such as tables is easy and requires only about one-third of the time required for conventional methods. Waterproofing work requires no skill, making waterproofing work easy and quick. In addition to the low cost of waterproofing, the waterproof patch does not show any corner patches like the conventional ones at the four corners of the irregular projection after waterproofing. Since the so-called self-leveling of the coating film layer is possible on the upper surface of the irregularly-shaped projecting portion, a uniform coating film is formed and the appearance after waterproofing is excellent.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a flat roof showing an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the flat roof, showing a state in which a waterproof tubular body is fitted over a support stand (irregularly shaped protrusion).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat roof 2 Wall surface to be waterproofed 3 Waterproof sheet 3a Waterproof sheet extension 7 Post installation stand (irregular projection) 10 Waterproof tubular body 11 Waterproof layer made of synthetic resin waterproof coating 15 Post

Claims (1)

(57) [Claims] [Claim 1] In a waterproof sheet stretched roof (1) and the like,
This is a method of waterproofing the irregularly shaped protrusion (7) such as a support stand, etc., and the waterproofing tube extends over the peripheral wall of the irregularly shaped protrusion (7) and projects above the upper end of the irregularly shaped protrusion (7). Shape (1
(0), and a synthetic resin waterproof paint is poured into the inside of the waterproof tubular body (10) to form a waterproof layer (11) made of a synthetic resin waterproof coating covering the irregularly shaped protrusion (7). An extension that rises along the outer surface of the waterproof tubular body (10) on a waterproof sheet (3) stretched over the wall (2) to be waterproof, such as a flat roof (1) other than the irregularly shaped protrusion (7) (3a), and install this waterproof sheet extension
A method of waterproofing irregularly shaped projections on a waterproof sheet-stretched flat roof or the like, wherein (3a) is joined to an outer surface of a waterproof tubular body (10).