JP3523176B2 - Renovation waterproof structure on rooftop with parapet with chin and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for repairing a rooftop waterproof layer having a parapet having a draining jaw.

[0002]

2. Description of the Related Art FIG. 2 is a partially cutaway sectional view showing a rooftop waterproof layer having a parapet having a draining jaw.
In the figure, 1 is a rooftop base of a building, 2 is a parapet formed at the peripheral edge of the roof, and a chin 3 for draining water is formed at the inner edge. Reference numeral 4 is a waterproof layer stretched from the rooftop base 1 to the inner wall of the parapet 2. A heat insulating layer 5 is formed on the upper surface of the waterproof layer 4,
Further, a concrete layer as a protective layer is laid on the upper surface of the heat insulating layer 5. In addition, 7 is a block wall as a protective layer of the waterproof layer 4 stretched over the inner wall portion of the parapet 2.

[0003] By the way, in general, the problem of the roof waterproof function rarely occurs on a flat portion, and most of them occur on the rising portion where the waterproof layer has a terminal portion. That is, in FIG. 2, the parapet 2 surrounded by the protective layer 7
It occurs in the part of the waterproof layer that is raised on the inner wall of the. Therefore, in the repair or repair work, a method of removing the waterproof layer of the rising part including the protective layer to expose the underbody of the skeleton and then forming a new waterproof layer on the rising part is adopted.

[0004]

However, the above-mentioned conventional repairing method has the following inconveniences, and improvement measures have been long sought. In other words, (a) Removal of the old waterproof layer requires a predetermined construction period and cost, which is further increased when the protective layer is provided. (B) Noise and dust are unavoidable during the removal work, which is a problem that cannot be overlooked especially when the building is for residential use. (C) Waste materials are generated with the removal of the waterproof layer, but nowadays, there are strict regulations on the handling and disposal of construction waste materials from the standpoint of environmental maintenance. (D) While the waterproof layer is being removed or after the removal, it is always necessary to take measures against rainfall. (E) Furthermore, many parapets have an overall height of 40c.
Since the inner wall length of the parapet in the lower part of the chin is considerably short, the removal of the protective layer and waterproof layer in this part must be a complicated work in an unnatural posture during work. In some cases, it may be difficult to complete the removal work.

[0005]

According to the present invention, a rooftop repair waterproof structure having a parapet with a chin is provided with a rising portion fixed between a chin portion and a flat roof portion of the parapet.
Existing waterproof part or protection concrete on the rooftop flat part
It is intended to solve the above-mentioned conventional problems by including a toe part and the rising part, and a heavy waterproof layer containing the end part at the top of the parapet.

In the repaired waterproof structure, the rising portion is constituted by a plate-like member which is stretched and fixed on a vertical surface extending from the found part of the parapet to the flat surface of the roof, and the upper end of the plate-like member is a screw on the side of the parapet. In some cases, the lower end may be fixed or fixed by an adhesive tape, and the lower end may be fitted to a holding metal fitting fixed to a flat surface portion.

In addition, the repair waterproof method according to the present application is (a)
A step of fixing the rising portion between the jaw of the parapet and the roof top flat portion, and (b) forming an existing waterproof portion or protective concrete portion in the flat portion and a heavy waterproof layer covering the rising portion. It is intended to solve the above-mentioned conventional problems by including a step of accommodating the end portion of the parapet top end.

Furthermore, in the above-mentioned repair waterproof method,
The rising portion is composed of a plate-like member that is stretched and fixed on a vertical surface from the found part of the parapet to the flat surface of the roof, and the upper end of this plate-like member is fixed with a screw or an adhesive tape to the side of the parapet. The lower end may be configured by being fitted to a sandwiching fixture fixed to the flat surface portion.

[0009]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the description, the same portions as those in FIG. 2 or the corresponding portions will be denoted by the same reference numerals and redundant description will be omitted. FIG. 1 is a partially cutaway sectional view showing a repair waterproof structure according to an embodiment of the invention. In the figure, 8 is a smooth board plate as a rising part fixedly provided between the jaw part 3 of the parapet 2 and the protective concrete layer 6 on the rooftop flat part, and is a calcareous plate, an asphalt molding plate,
Antiseptic plywood is used. The upper end of the board 8 is screwed to the inner part of the jaw 3, and the lower end is fitted and supported by the holding part 11a of the holding metal fitting 11 fixed to the flat part.

Reference numeral 9 designates an object surface, that is, an upper end surface of the parapet 2 and a board plate 8 for fixing an after-mentioned heavy waterproof layer.
This is a well-known primer applied to the upper surface of the protective concrete layer 6 on the surface and the flat portion. 10 is a primer
9 is a heavy-duty waterproof layer as a new waterproof layer formed on 9 and covers the surfaces of the existing waterproof layer 4 in the flat part and the board 8 and its end is stretched to the outer end of the top of the parapet 2. It is set up. As the overlapping waterproof layer 10, an asphalt waterproof layer, a coating waterproof layer, a polymer sheet waterproof layer, or the like is selected according to various construction conditions. The end of the heavy waterproof layer 10 is extended and fixed to the top end of the parapet 2, that is, the outer end of the top, but in this embodiment, the draining metal fitting 12 is screwed to a required position of the joint end. We are trying to strengthen the rain.

Next, the above-mentioned waterproof structure will be described with reference to FIG. 1 according to its construction procedure. First, the flat portion of the protective concrete layer 6 of the flat portion is appropriately wiped, and then the holding metal fitting 11 is screwed to a predetermined position of the protective concrete layer 6 of the flat portion. Next, the lower end of the prepared board 8 as the rising portion is attached to the holding portion 1 of the holding metal fitting 11.
The upper end is fixed to the side surface of the jaw portion 3 with a screw.
At this time, the existing waterproof layer 4 and its protective layer 7 at the rising portion of the parapet 2 are left as they are.
After the board 8 is installed in a predetermined manner, a place where a heavy waterproof layer as a new waterproof layer is formed, that is, the surface of the protective concrete layer 6 which is a flat surface, the board 8 and the top of the parapet 2 are formed. Apply a primer to the. After the formation of the primer layer, a heavy waterproof layer as a new waterproof layer is stretched over the surfaces of the existing waterproof layer 4 and the board 8 in the flat part, and the end of the heavy waterproof layer is a parapet. Extend and fix to the outer edge of the top of 2.
In some cases, the ends are reinforced with a drainage fitting to reinforce the rain. As the heavy waterproof layer, an asphalt waterproof layer, a coating waterproof layer, a polymer sheet waterproof layer, etc. are selected according to various construction conditions, and each is constructed by a well-known construction method.

[0012]

As described above, according to the present invention, the roof waterproof layer having the jawed parapet can be repaired without requiring the removal of the old waterproof layer, which is a complicated work. There is no noise, dust, etc., or waste materials generated due to the removal, and it is possible to perform a quiet renovation work, avoid the problem of proper disposal of waste materials, and troublesome rainfall during or after the removal work of the waterproof layer etc. No measures are required, and it will contribute greatly to reducing the construction period and cost required for repair.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a rooftop waterproof structure before repair.

FIG. 2 is a perspective view of a waterproof structure according to one embodiment of the present invention.

[Explanation of symbols]

1. ． ． ． ． ． ． ． ． Roof base 2. ． ． ． ． ． ． ． ． Parapet 3. ． ． ． ． ． ． ． ． Draining jaw 4. ． ． ． ． ． ． ． ． Existing waterproof layer 6. ． ． ． ． ． ． ． ． Protective concrete layer 8. ． ． ． ． ． ． ． ． Rise (board board) 10. ． ． ． ． ． ． ． Heavy waterproof layer 11. ． ． ． ． ． ． ． Clamp

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takefumi Kinoshita 1-3-1 Kodai, Adachi-ku, Tokyo Within Tajima Roofing Co., Ltd. (72) Sadao Kurihara 1-3-3 Kodai, Adachi-ku, Tokyo No. 1 within Tajima Roofing Co., Ltd. (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04D 11/00 E04D 3/00 E04D 5/00 E04D 13/14 E04D 13/15 301

Claims (4)

(57) [Claims] 1. A repaired waterproof structure on a roof having a parapet with a chin, wherein a rising portion fixedly provided between a chin portion of the parapet and a flat surface portion of the parapet and an existing waterproof portion or a protective concrete in the flat surface portion of the roof. A rooftop waterproof structure having a jawed parapet, characterized in that the roof part and the rising part are covered, and an overlaid waterproof layer at the top of the parapet is provided. 2. The rising part according to claim 1, comprising a plate-shaped member stretched and fixed on a vertical surface extending from a found part of the parapet to a flat surface of the roof, and an upper end of the plate-shaped member is arranged on a side part of the parapet. A rooftop refurbished waterproof structure with a parapet with a chin, which is fixed to a screw or an adhesive tape, and the lower end of which is fitted to a sandwich metal fitting fixed to a flat surface. 3. A rooftop waterproofing method having a chinted parapet, comprising: (a) a step of fixing a rising portion between a chin portion of the parapet and a flat roof portion; and (b) existing waterproofing on the flat portion. Part or protective concrete part and a step of forming an overlapping waterproof layer covering the rising part and accommodating the end part at the top of the parapet,
Roofing renovation waterproofing method with a parapet with a chin. 4. The rising part according to claim 3, comprising a plate-shaped member stretched and fixed on a vertical surface extending from a found part of the parapet to a flat surface of the roof, and an upper end of the plate-shaped member is arranged on a side part of the parapet. A roof waterproofing method with a jawed parapet characterized in that it is fixed with screws or adhesive tape, and the lower end is fitted with a sandwiching metal fixed to a flat surface.