JPH0657891A - Insulating waterproof sheet and insulating waterproof construction method - Google Patents

Abstract

PURPOSE:To sharply shorten constructing period by laminating a foamed sheet on one surface of a waterproof sheet to form an insulating waterproof sheet, and laying this insulating waterproof sheet on a building rooftop. CONSTITUTION:On one surface of a waterproof sheet 1 in which a contraction preventing material 3 such as a glass nonwoven fabric is inserted to a vinyl chloride resin sheet, an insulating foamed sheet 2 is laminated to form an insulating waterproof sheet A. The surface of a base material 5 is covered with the insulating waterproof sheet A, and a first reinforcing sheet 6 is adhered and fixed onto the waterproof sheet A. A hole is bored along the circular hole of the center of the first reinforcing sheet 6 to the base material 5, a hardening resin is injected into this hole to adhere and fix a second reinforcing sheet 11. Thus, handling of sheets in construction can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating waterproof sheet laid on a rooftop of a building and an insulating waterproofing method. More specifically, the waterproof sheet is physically attached to the rooftop without using an adhesive. The present invention relates to an insulating waterproof sheet and an insulating waterproof method used for an insulating waterproof method of fixing to an insulation waterproofing method.

[0002]

2. Description of the Related Art Conventionally, one of the waterproofing methods for laying a waterproof sheet on a rooftop of a building is an insulating waterproofing method for mechanically fixing a waterproof sheet to a base material with a fixture without using an adhesive. There is a called construction method. The features of the insulation and waterproof method are as follows. Even if the water content of the concrete, which is the base material, is high (whether wet or wet with rainwater, etc.), it can be installed without using an adhesive and can be installed at any time regardless of the weather. It is economical because it can be completed and the construction period can be shortened. The movement of the base material is buffered to give a beautiful finish. The substrate is easy to process.

An example of the above-mentioned insulation and waterproof construction method is performed in the following procedure. a. A sheet of foamed polyolefin or the like is laid on the roof as an insulating sheet. b. When there is wind, the foam sheet is partially fixed to the base material surface with an adhesive or tape so that the foam insulating sheet is not blown off by the wind. c. A waterproof sheet made of, for example, vinyl chloride resin is laid on the surface of the insulating foam sheet. d. Weld the joints between the prevention sheets. e. Decide where to hit the fixture for fixing the tarpaulin and mark the tarpaulin. f. Drill a place to drive the fixture. g. A circular first reinforcing sheet having a hole in the center for cushioning is adhered to the waterproof sheet by liquid welding so that the waterproof sheet is not cracked by tightening the fixture. h. Embed the plug where it was drilled. i. Set the fixture in the hole and fix with screws. j. In order to prevent the infiltration of water from the part of the fixture, the second reinforcing sheet having a circular shape larger than that of the head part of the fixture is covered and liquid-tightly liquid-welded. At this time, the overlapping portion with the waterproof sheet is joined by liquid welding, and the circumferential insulating portion of the circular second reinforcing sheet is sealed. k. Weld the seams between the tarpaulins.

Generally, in the insulating and waterproofing method, a foamed resin sheet (hereinafter referred to as a foamed insulating sheet) is inserted between the waterproof sheet and the surface of the base material. In many cases, uneven surface unevenness on the surface of a concrete surface is a large base.Therefore, if a waterproof sheet is laid directly on this large uneven surface without inserting a foam sheet, it will become a waterproof sheet during construction. It may be scratched or punctured, and if the scratch on the waterproof sheet is left unattended, a crack will eventually form in that part, causing water leakage. Therefore, in the insulating and waterproofing method, a foamed insulating sheet is inserted between the base material and the waterproof sheet for cushioning. Further, when laying a waterproof sheet such as a polyvinyl chloride sheet or an ethylene-vinyl acetate copolymer resin sheet in which a liquid substance such as a plasticizer is added to a resin, synthetic rubber or asphalt is used as a base material to be laid. When installed or when styrofoam is laid, the oily surface treatment agent of the base material layer oozes out on the surface of this waterproof sheet, which hinders the design of the waterproof sheet, or In some cases, the plasticizer migrates to the synthetic rubber sheet or styrofoam of the base material layer and deteriorates the waterproof sheet, resulting in cracking of the sheet. Therefore, in order to prevent the migration of the oil or the plasticizer, a foam insulating sheet for preventing migration is used by inserting it between the base substrate and the waterproof sheet.

[0005]

[Problems to be Solved by the Invention] The foamed insulation sheet used in the above-mentioned conventional insulation and waterproofing method is a foamed body of about 30 times, so that it is easily blown away by the wind during construction.
After partially fixing the foam insulation sheet to the base material with an adhesive or gum tape, a waterproof sheet is laid on it. Therefore, not only is it difficult to fix the foam insulation sheet, but on a windy day, the foam insulation sheet cannot be fixed completely and wrinkles occur, and if a waterproof sheet is laid on it, it will also wrinkle. Occurs, which not only impairs the appearance but also weakens the strength of the wrinkled portion of the sheet due to long-term use and causes cracks. Further, since the foam insulating sheet is as thin as 0.5 to 5.0 mm and is weak in strength, it may be torn at the stage of constructing the foam insulating sheet. Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technology, to easily handle the foam insulating sheet during construction on the rooftop or the like, and to prevent problems such as bad influences and breakage caused by wind. It is to provide a waterproof sheet and an insulating waterproof method.

[0006]

The above object can be achieved by the present invention described below. That is, the present invention provides an insulating waterproof sheet characterized in that a foam sheet is laminated on one surface of the waterproof sheet, and the insulating waterproof sheet faces the base material surface to be waterproofed with the foam sheet surface facing. Then, the first reinforcing sheet is adhered and fixed at a predetermined position, and a hole is drilled through the base material with an appropriate drill at the center of the sheet. Insert, inject curable resin into the through hole, cover the holding plate with a screw hole at the center, fix the holding plate to the base material with screws, and cover the reinforcing sheet and the holding plate. This is an insulating and waterproofing method characterized by bonding and fixing a second reinforcing sheet.

[0007]

[Function] By stacking the foam insulation sheet on the back side of the waterproof sheet in advance, even if the wind blows during the construction, the light and weak insulation foam sheet will be blown, torn, wrinkled, or curled. This eliminates the problem of working and significantly reduces the work process.

[0008]

EXAMPLES The present invention will be described in more detail with reference to the following preferred examples. The insulating waterproof sheet A of the present invention is basically a waterproof sheet 1 as shown in the partial perspective view of FIG.
It is characterized in that the insulating foam sheet 2 is laminated on one surface. Waterproof sheet 1 used in the present invention
The itself may be the same as the waterproof sheet used in the conventional insulation waterproof method, for example, vinyl chloride resin sheet, ethylene-vinyl acetate copolymer resin sheet, polyethylene resin sheet, polypropylene resin sheet, synthetic rubber sheet, etc. However, a soft vinyl chloride resin sheet is the most preferable from the viewpoint of easy liquid welding (adhesion with a solvent). The waterproof sheet 1 as described above may be a single-layer body or a laminated body, but a laminated body in which a shrinkage-preventing material 3 such as a glass nonwoven fabric is inserted to prevent the sheet 1 from shrinking is preferable. The thickness of the waterproof sheet 1 is not particularly limited, but is usually 0.5 to 5.0.
mm, preferably 1.0 to 2.0 mm. The length is not particularly limited, and is a long body having a width of about 500 to 2,000 mm, which is usually wound in a roll shape.

The foam insulating sheet 2 adhered to the back surface of the waterproof sheet 1 is an insulating foam sheet made of various foams such as polyethylene, polypropylene, polyurethane, polyvinyl chloride and ethylene-vinyl acetate copolymer. When the waterproof sheet 1 is a vinyl chloride resin sheet or a resin sheet to which a liquid substance such as a plasticizer such as an ethylene-vinyl acetate copolymer resin is added, a polyolefin resin capable of preventing the migration of the plasticizer Foamed sheets of resin are preferred. The thickness of the foam sheet 2 is usually 0.5.
Is 5.0 mm, preferably 1.0 mm to 3.0 mm. The length and width are similar to those of the waterproof sheet 1.
In addition, the insulating foam sheet 2 is preferably a material that is long and flexible so that it can be wound into a roll like the waterproof sheet 1.

The waterproof sheet 1 and the insulating foam sheet 2 are laminated by an adhesive agent, a pressure-sensitive adhesive agent, or heat fusion. When the insulating and waterproofing method is applied by using the above materials, the sheet A is a long one having a specific width, and when the sheet A is applied on a wide rooftop or the like, a long sheet having a certain width is cut and arranged in an appropriate length. Install. At this time, it is necessary to prevent water leakage between the adjacent waterproof sheets. Therefore, as illustrated in FIGS. 2A to 2C, the side edges of the adjacent sheets are partially overlapped,
It is preferable to bond the both, and in order to improve the adhesion, the foamed insulating sheet 2 is not provided at the side end portion of the waterproof sheet 1 (FIG. 2a), or even if provided, it can be forcibly peeled. Then, the insulating foam sheet 2 is peeled off by a necessary width and cut off, and the shape is as shown in FIG. 2a, or the foam sheet 2 is partly peeled as shown in FIG. If it is welded or the insulating foam sheet 2 is not peeled off, the auxiliary sheet 4 of the same quality as the waterproof sheet 1 is used.
It is preferable to sufficiently cover the seam.

As described above, preferably, if the waterproof sheet 1 and the insulating foam sheet are laminated so as to be compulsorily peelable, the foam insulating sheet 2 is peeled from the waterproof sheet 1 by a necessary width when the waterproof sheets 1 are joined together. After the removal, the waterproof sheets can be joined to each other strongly by liquid welding or the like in a watertight manner. As such a peelable adhesive method, for example,
Using an acrylic emulsion or polyvinyl acetate emulsion adhesive or pressure sensitive adhesive, etc., select a suitable adhesive that does not have much adhesive strength for either the waterproof sheet 1 or the foam insulating sheet 2. The method of bonding is preferred. In addition, on the surface of the waterproof sheet 1, an appropriate interval, for example, 50 to 200 mm, within a range that does not impair the appearance of the waterproof sheet 1.
It is preferable to provide grid-like scales at regular intervals. By adding such a scale,
When fixing the insulating waterproof sheet A to the rooftop, it becomes possible to accurately position the fixing point.

Next, an example of the insulating and waterproofing method of the present invention will be described with reference to FIGS. 3 and 4. First, the above-described insulating waterproof sheet A (a laminated body of a vinyl chloride resin sheet and a foamed polypropylene sheet as an example) is waterproofed with concrete, lightweight expanded concrete, wood, or already rubberized or asphalt. However, as shown in the figure, the surface of the base material 5 whose durability time has already passed is covered with the insulating waterproof sheet A. Next, a similar first reinforcing sheet 6 made of vinyl chloride resin (in this example, a soft vinyl chloride resin sheet disc having a circular hole with a diameter of 185 mm, a thickness of 1 mm, and a diameter of 10 mm in the center) is used as the waterproof sheet 1. It is placed at a predetermined fixed position and is preferably liquid-welded to the surface of the waterproof sheet.

Next, along the circular hole at the center of the first reinforcing sheet 6, a suitable drill suitable for the base material 5 is used to penetrate the insulating waterproof sheet A to perforate the base material 5. Four
A hole 7 having a depth of about 10 mm and a depth of about 30 to 150 mm is formed, and a room temperature curable resin such as an epoxy resin is injected into the hole to secure a screw hole and fix the screw before the resin is solidified. For example, a nylon plug 8 is inserted in order to secure the pressure, and subsequently, for example, a holding plate 9 (in this example, a metal dish shape and coated with an anticorrosive paint (preferably vinyl chloride resin) is applied. A steel plate having a thickness of 1 mm, a diameter of 65 mm, and a screw hole of 5 mm at the center is placed, and the screw 10 is screwed into the base material 5 through the hole of the holding plate to firmly fix the holding plate 9. During this time, the epoxy resin is solidified and is sufficiently fixed. Next, the second reinforcing sheet 11 (in this example, diameter 1,200 mm, thickness 1
mm of disc-shaped soft vinyl chloride sheet) is entirely coated with THF, and the first reinforcing sheet 6 and the first reinforcing sheet 6 are fully covered with the first pressing sheet 9 and the first reinforcing sheet 6.
And the surface of the waterproof sheet 1. Then, if necessary, a vinyl chloride resin TH may be applied around the second reinforcing sheet 11.
Sealant 12 consisting of F solution is applied to stop and completely prevent water leakage.

Next, specific examples will be described. Thickness 1.2m
Insulating waterproof sheet of the present invention in which a polyethylene foam having a thickness of 1.5 mm and a foaming ratio of 30 times is laminated and laminated integrally with an acrylic emulsion adhesive on the back surface of the polyvinyl chloride resin waterproof sheet of m. Got Laying the above laminated waterproof sheet on the concrete surface of the flat bottom wall of the roof,
The circular first reinforcing sheet (made of vinyl chloride resin) with a hole in the center that determines the position where the fastener is driven.
Are attached to the positions where the fixtures are driven by liquid welding, the plugs are driven, the fixtures are set, and they are firmly fixed with stainless screws. Furthermore, cover the fixing part with a circular second reinforcing sheet (made of vinyl chloride resin) with a central part larger than the head part of this fixing part raised like a cap, and fix the surface part of the fixing part and waterproofing. The overlapping portion with the sheet is bonded by liquid welding, and the circumferential insulating portion of the second reinforcing sheet is sealed. The fixture is a vinyl chloride resin sheet or a steel plate whose surface is coated with paint. At the side end of the insulating waterproof sheet, the waterproof sheet and the foamed polyethylene sheet on the back surface are peeled off with a width of about 30 to 50 mm, and the side edges of the waterproof sheet that are in contact with each other are overlapped, and only the waterproof sheet portion is liquid. Bonding and joining by welding to join the waterproof sheet to the entire rooftop. In addition, the end portion of the waterproof sheet may be preliminarily laminated so as to be about 30 to 50 mm longer than the insulating foam sheet laminated on the back surface thereof.

[0015]

As described above, according to the present invention, since the foam insulating sheet is preliminarily laminated on the back surface of the waterproof sheet, the conventional construction is to lay the foam insulating sheet and then lay the waterproof sheet. The process is now complete and the construction time has been greatly reduced. Further, the foam insulating sheet is not broken during the construction, and the foam insulating sheet is lifted by the wind, and when the waterproof sheet is laid on the foam insulating sheet, the waterproof sheet is not wrinkled. Further, when the waterproof sheet and the foam insulating sheet are peelably bonded, the end portions of the waterproof sheets can be joined together by peeling the foam insulating sheet and overlapping and adhering only the waterproof sheet. Watertight joining can be maintained for a long time (when sheets are not welded by overlapping, the ends of foamed laminated sheets are butted and another sheet is welded over the joint along its joints. ).

[0016]

[Brief description of drawings]

FIG. 1 is a perspective view of a part of an insulating waterproof sheet of the present invention.

FIG. 2 is a diagram illustrating a method of joining the insulating waterproof sheets of the present invention.

FIG. 3 is a diagram illustrating an insulating and waterproofing method of the present invention.

FIG. 4 is a diagram illustrating an insulating and waterproofing method of the present invention.

[Explanation of symbols]

 A: Insulating waterproof sheet 1: Waterproof sheet 2: Insulating foam sheet 3: Reinforcing material 4: Auxiliary sheet 5: Base material 6: First reinforcing sheet 7: Hole 8: Plug 9: Holding plate 10: Screw 11: Second Reinforcing sheet 12: Sealant

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Ogura, 5-3 Higashi-naka-nuki-cho, Tsuchiura-shi, Ibaraki Ronseal Industrial Co., Ltd. (72) Inventor, Yasuaki Shinada 5-3 Higashi-naka-nuki-cho, Tsuchiura-shi, Ibaraki Ronseal Industrial Co., Ltd. Company Technology Research Center

Claims (5)

[Claims] 1. An insulating waterproof sheet used in an insulating waterproof method, wherein a foam sheet is laminated on one surface of the waterproof sheet. 2. The insulating waterproof sheet according to claim 1, wherein the foamed sheet is adhered to the waterproof sheet so as to be forcibly peeled off. 3. The insulating waterproof sheet according to claim 1, which is a long sheet, and a foam sheet is not provided on at least one side end portion of the waterproof sheet. 4. The insulating waterproof sheet according to claim 1, wherein the waterproof sheet is made of vinyl chloride resin, and the foam sheet is made of a synthetic resin that prevents migration of a plasticizer in the waterproof sheet. 5. The insulating waterproof sheet according to any one of claims 1 to 4 is coated on a surface of a base material to be waterproofed with a surface of a foamed sheet facing it, and a first reinforcing sheet is adhered and fixed at a predetermined position. , A hole is drilled through the base material with an appropriate drill in the center, a plug for receiving a screw is inserted into the through hole, a curable resin is injected into the through hole, and a screw hole is formed in the center. An insulating and waterproofing method characterized in that, after covering the holding plate, the holding plate is fixed to the base material with a screw, and further, the reinforcing sheet and the second reinforcing sheet covering the holding plate are bonded and fixed.