Waterproof structure having flow path for rain water

Abstract

The present invention provides a waterproof structure having a rainwater flow path, characterized by comprising: a waterproof sheet (100) attached to the upper surface of a concrete structure (10); and a finishing material (200) attached to the upper surface of the waterproof sheet (100); wherein the waterproof sheet (100) includes an attachment and flow path forming part (110) that is attached to the lower surface of the finishing material (200) and forms a rainwater flow path; a modified asphalt layer (120) formed by modified asphalt that is attached to the lower surface of the attachment and flow path forming part (110); and a bottom layer (130) formed below the modified asphalt layer (120) for attachment work on the upper surface of the concrete structure (10), thereby allowing the finishing material to be conveniently installed on the waterproof layer of the concrete structure while ensuring that the rainwater flow path is stably formed.

Description

Technology Field

[0001] The present invention relates to the field of construction technology, and more specifically, to a waterproof structure equipped with a rainwater flow channel. Background Technology

[0002] Recently, due to the rapid high-density development of cities, the reduction of green spaces, and the use of environmentally harmful products, abnormal temperature phenomena such as a sharp rise in urban temperatures and the urban heat island effect are occurring frequently.

[0003] Due to this phenomenon, a vicious cycle continues, including rising temperatures and a surge in electricity consumption.

[0004] The reason is that various artificial structures fail to absorb light and instead emit it outward, raising the temperature of the atmosphere and buildings.

[0005] To address these issues, research is being conducted on installing various types of finishing materials on the rooftop surface.

[0006] However, conventional flooring materials have a problem in that a water flow path is not formed because they are directly attached to the surface of the waterproofing layer using adhesives, etc. Prior art literature

[0007] Korean Registered Patent 10-1347971 Korean Registered Patent 10-2327308 Korean Registered Patent 10-1575604 Korean Registered Utility Model 20-0373081 The problem to be solved

[0008] The present invention was developed to solve the aforementioned problems and aims to provide a waterproof structure equipped with a rainwater flow channel that allows for the convenient installation of a finishing material on the waterproof layer of a concrete structure while ensuring the stable formation of a rainwater flow channel. means of solving the problem

[0009] To solve the above problem, the present invention provides a waterproof structure having a rainwater flow channel, characterized in that it comprises: a waterproof sheet (100) attached to the upper surface of a concrete structure (10); and a finishing material (200) attached to the upper surface of the waterproof sheet (100); wherein the waterproof sheet (100) includes: an attachment and flow channel forming part (110) that is attached to the lower surface of the finishing material (200) and forms a rainwater flow channel; a modified asphalt layer (120) formed by modified asphalt and attached to the lower surface of the attachment and flow channel forming part (110); and a bottom layer (130) formed on the lower surface of the modified asphalt layer (120) for attachment work to the upper surface of the concrete structure (10).

[0010] The above attachment and flow-forming portion (110) comprises: a base plate (111); a Velcro coupling portion (112A) in which a plurality of Velcro protrusions (112) with hooks formed at the top are densely formed and the bottom is coupled to the base plate (111); and a water flow portion (113A) in which the Velcro protrusions (112) are not formed; and it is preferable that the waterproof sheet (100) and the finishing material (200) are coupled by the Velcro protrusions (112), and a water flow path is formed by the water flow portion (113A).

[0011] The above Velcro connecting part (112A) and the excellent flow path part (113A) are preferably formed alternately as a straight structure.

[0012] Preferably, the Velcro connecting portion (112A) is formed at both ends of the attachment and flow path forming portion (110), and the excellent flow path portion (113A) is formed in the central part of the attachment and flow path forming portion (110).

[0013] It is preferable that the excellent Euro section (113A) is formed in a cross-shaped structure, and the Velcro connecting section (112A) is formed in the remaining area.

[0014] The above modified asphalt is preferably a mixture of 60 to 90 weight percent straight asphalt; 3 to 20 weight percent a modifier formed by one or more of rubber-based materials, thermoplastic elastomers, and thermoplastic resins; and 5 to 20 weight percent a filler.

[0015] The above rubber-based modifier is preferably one of styrene butadiene rubber (SBR), chloroprene rubber, and natural rubber (NR), or a mixture of two or more of them.

[0016] The above thermoplastic elastomer is preferably one of styrene butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), and styrene ethylene butylene styrene block copolymer (SEBS), or a mixture of two or more of them.

[0017] The above thermoplastic resin is preferably one of ethylene vinyl acetate copolymer (EVA), ethylene ethyl acrylate copolymer (EEA), polyethylene (PE), and polypropylene (PP), or a mixture of two or more of these.

[0018] The above filler is preferably one of asbestos, alumina, kaolin clay, carbon black, graphite, silica sand, wollastonite, diatomaceous earth, magnesium oxide, calcium carbonate, talc, vermiculite, calcium carbonate, pyrophyllite clay, and anhydrous gypsum, or a mixture of two or more of these.

[0019] The bottom layer (130) is preferably a polyester nonwoven fabric or a polypropylene nonwoven fabric.

[0020] The above bottom layer (130) is preferably a PE film for heat attachment work.

[0021] The above bottom layer (130) is preferably a PE release film or a PP release film that protects the above modified asphalt layer (120) before the attachment work and removes it during the attachment work.

[0022] It is preferable that a reinforcing layer (140) is inserted in the central part of the above modified asphalt layer (120), the thickness of which gradually increases or decreases from one end to the other.

[0023] The reinforcing layer (140) preferably comprises one or more of PE, PP, PET, and EVA films, or a composite (140a).

[0024] The reinforcing layer (140) preferably comprises a PP nonwoven fabric (140b) or a PET nonwoven fabric.

[0025] The reinforcing layer (140) preferably comprises a composite (140c) of PP nonwoven fabric and fiberglass mesh or a composite of PET nonwoven fabric and fiberglass mesh.

[0026] The above finishing material (200) preferably comprises a bonding layer (210) formed by a nonwoven fabric to bond with the Velcro protrusion (112); and a finishing layer (220) formed on the upper part of the bonding layer (210).

[0027] The above finishing layer (220) is preferably one of a heat-blocking exposure sheet, a Nox-reducing exposure sheet, an aluminum exposure sheet, a shingle exposure sheet, a copper exposure sheet, a TPO exposure sheet, or a PVC waterproof sheet. Effects of the invention

[0028] The present invention provides a waterproof structure equipped with a rainwater flow channel that allows for the convenient installation of a finishing material on a waterproof layer of a concrete structure while ensuring the stable formation of a rainwater flow channel. Brief explanation of the drawing

[0029] FIG. 1 and below illustrate embodiments of the present invention, Figure 1 is a cross-sectional view of a waterproof structure. FIG. 2 is a cross-sectional view of a first embodiment of a waterproof sheet. FIG. 3 is a cross-sectional view of a second embodiment of a waterproof sheet. Figure 4 is a cross-sectional view of the Velcro joint. FIG. 5 is a partial cross-sectional view of the first embodiment of the attachment and Euro-forming portion. FIG. 6 is a plan view of a second embodiment of the attachment and Euro-forming part. FIG. 7 is a plan view of a third embodiment of the attachment and Euro-forming part. Specific details for implementing the invention

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0031] As illustrated in FIG. 1 and below, the present invention basically relates to a waterproof structure comprising: a waterproof sheet (100) attached to the upper surface of a concrete structure (10); and a finishing material (200) attached to the upper surface of the waterproof sheet (100).

[0032] Here, the waterproof sheet (100) is attached to the upper surface of the concrete structure (10) and is composed of an attachment and flow path forming portion (110), a modified asphalt layer (120), and a bottom layer (130). (Figs. 1 to 3)

[0033] The attachment and flow path forming portion (110) of the waterproof sheet (100) is attached to the non-woven fabric (230) of the finishing material (200) and forms a flow path for rainwater. (Figs. 4 to 7)

[0034] Specifically, this is configured to include a base plate (111), a Velcro joint (112A), and an excellent flow path (113A).

[0035] The Velcro protrusions (112) have a structure in which the lower end is connected to the base plate (111) and a hook is formed at the upper end, and the Velcro connecting part (112A) has a structure in which these Velcro protrusions (112) are densely formed. (Fig. 4)

[0036] The waterproof sheet (100) and the non-woven fabric (230) of the finishing material (200) are joined by these Velcro protrusions (112).

[0037] The excellent flow channel section (113A) formed in the upper region of the base plate (111) is the upper space of the base plate (111), which means an area where the Velcro protrusion (112) is not formed. (Fig. 5)

[0038] Since this excellent flow path (113A) does not combine with the non-woven fabric (230) of the finishing material (200), a fine gap structure is formed between the waterproof sheet (100) and the finishing material (200), and a flow path for rainwater is formed by this gap structure.

[0039] The Velcro joint portion (112A) and the excellent flow path portion (113A) have a straight structure and can be formed alternately. (Fig. 6)

[0040] When multiple waterproof sheets (100) of this structure are installed in a row, the rainwater flow paths (113A) of each waterproof sheet (100) are connected to form a rainwater flow path.

[0041] For stable attachment, it is preferable that Velcro connecting parts (112A) be formed at both ends of the attachment and flow path forming part (110) of the waterproof sheet (100), and that the rainwater flow path part (113A) be formed in the center of the attachment and flow path forming part (110) of the waterproof sheet (100).

[0042] The superior Euro section (113A) may be formed in a cross-shaped structure, and the remaining area may have a structure in which a Velcro connection section (112A) is formed.

[0044] The modified asphalt layer (120) of the waterproof sheet (100) is attached to the lower part of the attachment and flow path forming part (110) and is formed by modified asphalt.

[0045] The above modified asphalt is a mixture of 60 to 90 weight percent straight asphalt; 3 to 20 weight percent a modifier formed by one or more of rubber-based, thermoplastic elastomers, and thermoplastic resins; and 5 to 20 weight percent a filler.

[0046] Rubber-based modifiers are composed of one or more of styrene butadiene rubber (SBR), chloroprene rubber, and natural rubber (NR).

[0047] The thermoplastic elastomer is composed of any one of styrene butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), and styrene ethylene butylene styrene block copolymer (SEBS), or a mixture of two or more of them.

[0048] The thermoplastic resin is composed of any one of ethylene vinyl acetate copolymer (EVA), ethylene ethyl acrylate copolymer (EEA), polyethylene (PE), and polypropylene (PP), or a mixture of two or more of them.

[0049] When these modifiers are mixed with straight asphalt, the asphalt acquires rubbery elasticity, and generally, as the amount of modifier added increases, physical properties such as softening point, viscosity, and strength improve.

[0050] In addition, when a modifier is added to straight asphalt, the maltene component in the asphalt is absorbed into the modifier and expands in volume by 5 to 7 times.

[0051] Initially, the modifier exists in a dispersed form within the asphalt, but as the amount added increases, the volume increases due to the expansion of the modifier, and when it exceeds about 7%, the state changes and the asphalt becomes dispersed within the modifier.

[0052] The filler is composed of any one of asbestos, alumina, kaolin clay, carbon black, graphite, silica sand, wollastonite, diatomite, magnesium oxide, calcium carbonate, talc, vermiculite, calcium carbonate, pyrophyllite clay, and anhydrous gypsum, or a mixture of two or more of these.

[0053] Table 1 shows the physical properties of the filler.

[0054]

[0055]

[0056] Table 2 shows the physical properties of modified asphalt according to an embodiment of the present invention, which is a mixture of 70 wt% straight asphalt; 12 wt% styrene butadiene rubber (SBR); and 18 wt% asbestos.

[0058] To increase the strength and durability of the waterproof sheet (100), an additional reinforcing layer (140) may be inserted into the center of the modified asphalt layer (120).

[0059] When the thickness of this reinforcing layer (140) takes a structure in which it gradually increases or decreases from one end to the other, a gradient is formed in the waterproof sheet (100), and when multiple waterproof sheets (100) with different gradient structures are installed, a gradient of rainwater can be formed on the upper surface of the roof.

[0060] This reinforcing layer (140) can be implemented by any one or more of PE, PP, PET, and EVA films, a composite of two or more (140a), a PP nonwoven fabric (140b) or a PET nonwoven fabric, a composite of a PP nonwoven fabric and a fiber glass mesh (140c), or a composite of a PET nonwoven fabric and a fiber glass mesh, etc.

[0061] The bottom layer (130) of the waterproof sheet (100) is formed on the lower part of the modified asphalt layer (120) for attachment to the upper surface of the concrete structure (10).

[0062] The bottom layer (130) may be composed of a polyester nonwoven fabric or a polypropylene nonwoven fabric.

[0063] When a waterproof sheet (100) is attached to the upper surface of a concrete structure (10) by a heat attachment process, the bottom layer (130) is made of a PE film.

[0064] When the modified asphalt layer (120) of the waterproof sheet (100) is attached to the upper surface of the concrete structure (10), the bottom layer (130) is composed of a PE release film or a PP release film, which protects the modified asphalt layer (120) before the attachment work and removes it during the attachment work.

[0066] The finishing material (200) comprises: a bonding layer (210) formed by a nonwoven fabric to bond with the above-described Velcro protrusion (112); and a finishing layer (220) formed on the upper part of the bonding layer (210).

[0068] Here, the finishing layer (220) can be implemented by a heat-blocking exposure sheet (heat-blocking coating granule).

[0069] The thermal insulation exposed sheet is an exposed waterproof sheet combined with granules having thermal insulation performance, intended for waterproofing structures and reducing indoor temperatures.

[0070] While conventional exposed waterproofing sheets use modified asphalt sheets with a sanded surface, thermal insulation exposed sheets replace the surface sand with granules possessing thermal insulation properties; thus, they not only provide waterproofing for buildings but also enable energy savings by reducing indoor temperatures.

[0072] The finishing layer (220) can be implemented by a Nox reduction exposure sheet (Nox reduction coating granule).

[0073] This relates to an exposed waterproofing sheet combined with an asphalt improvement compound and a Smog-Reducing Granule that reduces nitrogen oxides (NOx) contained in atmospheric smog, with the aim of purifying the air by reducing nitrogen oxides.

[0074] While conventional exposed waterproofing sheets use modified asphalt sheets with a sanded surface, NOx-reducing exposed sheets replace the surface sand with Smog-Reducing Granules; thus, they not only provide waterproofing for buildings but also reduce atmospheric nitrogen oxides and further purify the air.

[0075] Granules are smog-reducing granules for reducing fine dust and NOx, composed of TiO2 with anatase, rutile, and brookite structures, as well as ZnO (zinc oxide), ZrO2 (zirconium oxide), and perovskite metal oxide compounds.

[0077] The finishing layer (220) can be implemented by an exposed aluminum sheet.

[0078] Exposed aluminum waterproofing sheets are a special waterproofing material used for waterproofing building roofs or walls.

[0079] This waterproof sheet is coated with aluminum, providing excellent resistance to external environments, and is primarily used for waterproofing and insulation of roofs, rooftops, and exterior walls.

[0080] It has excellent durability and waterproof performance.

[0081] With an aluminum coating, it offers excellent heat resistance and water resistance.

[0082] It does not easily deform even in extreme environments such as heavy rain, wind, UV rays, and high temperatures, and maintains its waterproof effect for a long period.

[0083] The aluminum surface reflects ultraviolet rays, which has the effect of suppressing temperature rise, allowing for reduced cooling costs during the summer.

[0084] In addition, it offers excellent lightweight properties and ease of installation.

[0085] Exposed aluminum waterproofing sheets are lightweight, making them easy to install as an additional layer on existing buildings, and they do not place a heavy load on the structure.

[0086] It is relatively thin and flexible, so it can be easily installed on various shapes of roofs or walls.

[0087] In addition, it has excellent resistance to the environment.

[0088] Aluminum is resistant to corrosion, so it withstands chemical corrosive elements such as humid environments or acid rain well, and maintains its performance for a long time.

[0089] It can be used reliably in various climates, making it easy to maintain and economical in the long run.

[0090] Colored aluminum sheets can also be used, which have desired designs printed on the aluminum sheet and offer excellent durability, thermal insulation, and heat shielding effects.

[0092] The finishing layer (220) can be implemented by a shingle exposed sheet.

[0093] This is one of the materials used as a roofing material for houses or buildings.

[0094] Shingles are primarily made of a material similar to asphalt and have strong durability against rain, wind, and ultraviolet rays, serving to protect the surface of buildings in various climates.

[0095] A shingle sheet refers to a product made by processing these shingles into a specific shape to form a sheet.

[0096] Generally, asphalt shingles are the most widely used, but they can also be manufactured from various materials such as metal, wood, and clay shingles.

[0097] In particular, asphalt shingles are widely used around the world because they are relatively inexpensive and easy to install.

[0098] It is highly durable and offers excellent UV protection and waterproofing, making it suitable for residential roofs.

[0099] It is highly cost-effective, available in various colors and designs so it harmonizes well with the building's exterior, offers excellent soundproofing and thermal insulation, and is relatively easy to maintain.

[0101] The finishing layer (220) can be implemented by a copper exposed sheet.

[0102] Exposed copper waterproofing sheets are a high-end waterproofing material used for building roofs or exterior walls. They are highly durable and develop a distinctive aesthetic over time due to their characteristic patina.

[0103] Copper oxidizes naturally, enhancing its water resistance and durability, so it is widely used, especially in luxury buildings or historical structures.

[0104] Copper naturally forms verdigris during the oxidation process, and this verdigris prevents corrosion and protects the copper surface.

[0105] It is highly durable and can maintain its waterproof performance for decades.

[0106] It is less affected by extreme environments such as rain, snow, strong winds, and ultraviolet rays, and maintains a long lifespan.

[0107] Over time, copper changes from red to a greenish verdigris, exhibiting a unique and luxurious appearance due to its natural aging effect.

[0108] It is utilized as a stylish design element in modern architecture as well as traditional buildings, and is primarily used in luxury homes, museums, and temples.

[0109] Copper sheets have a relatively light weight, so they do not place a heavy load on the building.

[0110] In addition, it is fire-resistant and strong against fire, demonstrating safety as a natural fire-retardant material.

[0112] The finishing layer (220) can be implemented by a TPO exposed sheet.

[0113] TPO exposed sheets are waterproof sheets made of thermoplastic polyolefin and are primarily used on building roofs.

[0114] TPO sheets are particularly durable and chemically resistant, and their excellent energy efficiency makes them suitable for use as eco-friendly waterproofing materials.

[0115] Because it is resistant to ultraviolet rays, it is often exposed directly on rooftops and is widely used in commercial buildings, industrial facilities, and residential buildings.

[0116] With excellent durability and water resistance, TPO is a thermoplastic material that boasts strong durability and offers superior resistance to ultraviolet (UV) rays, ozone, and chemicals.

[0117] It maintains performance under various climatic conditions and forms an even waterproof layer with uniform thickness.

[0118] It also has excellent physical strength, allowing it to maintain its waterproof effect for more than 20 years after installation.

[0119] Due to its eco-friendly characteristics, TPO is environmentally friendly as it does not contain chlorine or other harmful substances.

[0120] In terms of energy efficiency, it is preferable for TPO sheets to have a white or light gray surface color, as this reflects solar heat to reduce the rise in indoor temperatures.

[0121] It contributes to reducing cooling costs during the summer and has the effect of increasing energy efficiency.

[0122] It offers excellent ease of installation and can be joined using a heat fusion method. Installation is simple and fast due to the Velcro attachment method.

[0124] The finishing layer (220) can be implemented by a PVC waterproof sheet.

[0125] PVC waterproofing sheets are waterproofing sheets made of polyvinyl chloride and are primarily used for roofs or walls.

[0126] PVC waterproof sheets are highly durable and have excellent resistance to chemicals and UV rays, ensuring stable performance even under various climatic conditions.

[0127] In addition, it is easy to install and is widely used in large-scale buildings or on flat roofs.

[0128] With excellent durability and waterproof performance, PVC has strong resistance to UV rays, ozone, and chemicals, maintaining its performance even when exposed to the external environment for a long time.

[0129] It has excellent waterproofing properties and demonstrates strong durability in various climatic conditions, making it particularly suitable for flat or exposed roofs.

[0130] PVC possesses excellent fire resistance and is inherently non-combustible, making it highly resistant to fire. It is suitable for buildings where fire safety is critical, and its fire-retardant performance can lead to reduced insurance costs.

[0131] It offers excellent flexibility and ease of installation. Due to its flexibility, PVC waterproofing sheets are easy to install to fit various building shapes.

[0132] It can be constructed using various methods such as adhesive bonding or heat fusion, making construction fast and easy.

[0133] Some PVC waterproofing sheets are eco-friendly and recyclable, making them suitable as eco-friendly materials for the construction industry.

[0134] Thanks to its long lifespan, it requires minimal maintenance, which can reduce its impact on the environment.

[0136] The foregoing merely describes some preferred embodiments that can be implemented by the present invention. As is well known, the scope of the present invention should not be interpreted as being limited to the above embodiments, and all technical concepts that share the fundamental principles with the technical concept of the present invention described above shall be considered to be included within the scope of the present invention. Explanation of the symbols

[0137] 10 : Concrete structure 100 : Waterproofing sheet 110: Attachment and Euro-forming section 111: Base plate 112: Velcro protrusion 112A: Velcro fastener 113A: Excellent Euro section 120: Modified asphalt layer 130 : Floor layer 140 : Reinforcement layer 200 : Finishing material 210 : Bonding layer 220 : Finishing layer

Claims

Claim 1 A waterproof sheet (100) attached to the upper surface of a concrete structure (10); and a finishing material (200) attached to the upper surface of the waterproof sheet (100); wherein the waterproof sheet (100) includes an attachment and flow path forming part (110) that is attached to the lower surface of the finishing material (200) and forms a flow path for rainwater; a modified asphalt layer (120) formed by modified asphalt that is attached to the lower surface of the attachment and flow path forming part (110); and a bottom layer (130) formed below the modified asphalt layer (120) for attachment work on the upper surface of the concrete structure (10); wherein the attachment and flow path forming part (110) includes a base plate (111); a Velcro coupling part (112A) in which a plurality of Velcro protrusions (112) with a hook formed at the upper end are densely formed and the lower end is attached to the base plate (111); and the Velcro A waterproof structure having a water flow channel, characterized in that it includes a water flow channel (113A) in which a protrusion (112) is not formed, and the waterproof sheet (100) and the finishing material (200) are joined by the Velcro protrusion (112), and a water flow channel is formed by the water flow channel (113A). Claim 2 delete Claim 3 A waterproof structure having a rainwater flow path, characterized in that, in claim 1, the Velcro connecting part (112A) and the rainwater flow path (113A) are formed alternately in a straight structure. Claim 4 A waterproof structure having a rainwater flow section, characterized in that, in paragraph 3, the Velcro connecting part (112A) is formed at both ends of the attachment and flow-forming part (110), and the rainwater flow section (113A) is formed in the central part of the attachment and flow-forming part (110). Claim 5 A waterproof structure having a rainwater flow channel, characterized in that, in paragraph 3, the rainwater flow channel (113A) is formed in a cross-shaped structure and the Velcro connecting part (112A) is formed in the remaining area. Claim 6 A waterproof structure having a rainwater flow channel according to claim 1, characterized in that the modified asphalt comprises 60 to 90 weight% of straight asphalt; 3 to 20 weight% of a modifier formed by one or more of rubber-based, thermoplastic elastomers, and thermoplastic resins; and 5 to 20 weight% of a filler. Claim 7 A waterproof structure having an excellent flow path, characterized in that, in claim 6, the rubber-based modifier is one or a mixture of two or more of styrene butadiene rubber (SBR), chloroprene rubber, and natural rubber (NR). Claim 8 A waterproof structure having an excellent flow path, characterized in that, in claim 6, the thermoplastic elastomer is one or a mixture of two or more of styrene butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), and styrene ethylene butylene styrene block copolymer (SEBS). Claim 9 A waterproof structure having an excellent flow path, characterized in that, in claim 6, the thermoplastic resin is one or a mixture of two or more of ethylene vinyl acetate copolymer (EVA), ethylene ethyl acrylate copolymer (EEA), polyethylene (PE), and polypropylene (PP). Claim 10 A waterproof structure having an excellent flow path according to claim 6, characterized in that the filler is one or a mixture of two or more of asbestos, alumina, kaolin clay, carbon black, graphite, silica sand, wollastonite, diatomaceous earth, magnesium oxide, calcium carbonate, talc, vermiculite, calcium carbonate, pyrophyllite clay, and anhydrous gypsum. Claim 11 A waterproof structure having an excellent flow path, characterized in that, in claim 1, the bottom layer (130) is a polyester nonwoven fabric or a polypropylene nonwoven fabric. Claim 12 A waterproof structure having an excellent flow path, characterized in that, in claim 1, the bottom layer (130) is a PE film for heat attachment work. Claim 13 A waterproof structure having a water flow path, characterized in that, in claim 1, the bottom layer (130) is a PE release film or PP release film that protects the modified asphalt layer (120) before the attachment work and removes it during the attachment work. Claim 14 A waterproof structure having a water flow channel, characterized in that, in the first paragraph, a reinforcing layer (140) is inserted in the central part of the modified asphalt layer (120), the thickness of which gradually increases or decreases from one end to the other. Claim 15 A waterproof structure having an excellent flow path, characterized in that, in claim 14, the reinforcing layer (140) comprises one or more of PE, PP, PET, and EVA films or a composite (140a). Claim 16 In claim 14, the above-mentioned reinforcing layer (140) is characterized by including a PP nonwoven fabric (140b) or a PET nonwoven fabric, forming a waterproof structure having an excellent flow path. Claim 17 In claim 14, the above reinforcing layer (140) is characterized by comprising a composite (140c) of PP nonwoven fabric and fiberglass mesh or a composite of PET nonwoven fabric and fiberglass mesh, and is a waterproof structure having an excellent flow path. Claim 18 A waterproof structure having an excellent flow path, characterized in that, in claim 1, the finishing material (200) comprises: a bonding layer (210) formed by a nonwoven fabric to bond with the Velcro protrusion (112); and a finishing layer (220) formed on the upper part of the bonding layer (210). Claim 19 In claim 18, the waterproof structure having an excellent flow path is characterized in that the finishing layer (220) is one of a thermal insulation exposed sheet, a Nox reduction exposed sheet, an aluminum exposed sheet, a shingle exposed sheet, a copper exposed sheet, a TPO exposed sheet, or a PVC waterproof sheet.

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