KR102006275B1 - Asphalt self-adhesion type root isolation sheet and root isolation method thereof - Google Patents

Abstract

The present invention relates to an asphalt self-adhesion type waterproof and a root-isolation sheet and a waterproof and root-isolation construction method. More specifically, the waterproof and a root-isolation sheet includes: a protection film layer having an upper surface coated with thermal barrier water-based ceramic paint; an aluminum layer made of an aluminum material; a glass fiber mesh; an asphalt compound layer; and release paper attached to the lower surface of the asphalt compound layer. Therefore, the present invention is capable of guaranteeing the adhesion force of an asphalt compound layer.

Description

[0001] ASPHALT SELF-ADHESION TYPE ROOT ISOLATION SHEET AND ROOT ISOLATION METHOD THEREOF [0002]

The present invention relates to a waterproof antiperspirant sheet for asphalt mortars and a waterproof antiperspirant method using the same, and more particularly to a waterproof antiperspirant sheet for protecting an asphalt compound layer from an external environment by shielding ultraviolet rays and forming a protective film layer having excellent heat resistance and tearing strength, The asphalt composite layer is adapted to the behavior of the base surface, and when cracks are generated, the cracks are packed tightly to maximize the waterproof effect, and an aluminum layer of aluminum material and a glass fiber In the upper part of the asphalt compound layer, the roots of the plant are prevented from propagating toward the structure by the protective film layer, the aluminum layer and the mesh net, Asphalt to make waterproof and anti-cyclic effect A waterproof antiperspirant sheet, and a waterproof antiperspirant method using the same.

In general, a conventional waterproof sheet is formed by forming a waterproof layer having a certain thickness with an upper or lower modified asphalt such as a nonwoven fabric, a woven fabric, a glass fiber, a film, etc. and a waterproof layer of PE, PVC, EVA, TPO, And a structure in which a release paper (release paper) is attached to the lower part of the waterproof layer.

The above-mentioned waterproof sheet delays the air due to the heavy weight of the product due to the excessive addition of the filler to the modified asphalt, and at the low temperature, the waterproof layer easily breaks due to external impact. When the waterproof sheet adheres to the concrete structure and other adhered surfaces There is an inconvenience that the adhesive surface must be melted by using a torch lamp.

In the above-described construction method, the unheated portion of the heat remains unfused, and since the waterproof sheet adheres to the adherend surface in the state where the unmelted portion exists, a portion not adhered to the adherend surface is formed do.

Therefore, leakage occurs frequently due to defects in the waterproof construction, and when the worker is in an unskilled state or when the worker makes a mistake in accordance with the condition of the day, the sheet is overheated when heated by the soil lamp, There is a fatal disadvantage that the waterproof function is lost due to frequent occurrence of the piercing phenomenon.

On the other hand, waterproof products made of liquid type (generally urethane, epoxy, urea, etc.) penetrate fine gaps well and can be easily applied to areas requiring a shape such as a corner. However, Since it takes considerable time to cure after application, the labor cost rises, and on the other hand, there is a problem that the smell is generated for the solvent, which is a cause of complaints and there is a limit to the use.

In addition, the coated liquid-type non-visible waterproofing method has a problem in that when the mortar or soil is poured, the waterproof layer may break or be broken due to external impact due to thinning of the solvent after volatilization.

On the other hand, the conventional self-adhering asphalt waterproof sheet exhibits adhesion force at a certain temperature or more, so that it can adhere to the adherend surface. However, since the material constituting the waterproof sheet is hardened at low temperature, , The plasticizer is added in excess to increase the adhesion at low temperatures. However, the adhesion function is improved at low temperatures, but the waterproof layer is easily broken even at a low temperature and the waterproof sheet is easily pierced by external impact, there was.

Particularly, when the waterproof layer of the conventional waterproof sheet is formed with the butyl compound and then adhered to the base surface, if the external heat is transferred to the waterproof layer (butyl layer) with time, the plasticizer contained in the waterproof layer As the air is vaporized, an air pocket phenomenon occurs in the waterproof layer (butyl layer), and such an air pocket phenomenon causes floating of the base and the waterproof layer.

Meanwhile, as a part of the urban environment improvement project, projects for greening the rooftop or creating the indoor garden are increasing rapidly, and it is expected that the demand will be continuously increased in the future. This is recommended not only because of restoration of soil ecosystem, energy conservation of air-conditioning and heating, improvement of urban heat-exchanging phenomenon, air purification, noise reduction, improvement of cityscape and other environmental and economic aspects. It is mandatory to have a rooftop greening facility.

However, rooftop greening causes problems such as leakage of water due to cracking and cracking of concrete structure due to growth of plant roots, acceleration of deterioration of waterproof layer due to constant wetting condition of soil layer. In addition to the fact that the growth potential of the plant roots is very strong, the waterproof layer is drilled and the problem of the structure occurs. In addition, the root of the plant itself may penetrate into the concrete surface.

Therefore, in order to stabilize the rooftop greening, a rooftop greening part should be constructed in a manner that does not affect the structural stability and durability by constructing a safe base for the structure to which the rooftop greening part is applied. It is necessary to form an antifouling layer to protect the waterproof layer.

The construction method in which the fibrous sheet (non-woven fabric, etc.) is laid down so that the roots can not be easily lowered and does not directly touch the waterproof layer has been used for the first time, but since there is no excellent roughening effect, , And a method of bonding a sheet having physically and chemically stable physical properties to form an antifouling layer is used.

However, in general, when these types of antiseptic sheets are applied, joints between the sheets are adhered by a heat fusion method. In this case, if the heat is excessively transferred, the sheet surface is damaged or deformed, So that the adhesive force is weakened. As a result, defects such as lifting and peeling occur, and it becomes difficult to protect the waterproof layer from the root of the plant.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a compound having a strong adhesive force and an adhesive force so that even when applied to horizontal and horizontal surfaces, To prevent unsticking, minimize shrinkage due to temperature, cut off leakage, protect the asphalt compound layer from ultraviolet rays, and maintain long-term durability against changes in external environmental conditions. In particular, taking advantage of the fact that the roots of the plant propagate by avoiding aluminum and metallic materials, aluminum and metallic materials are adopted, thereby making it possible to ensure a long-time water-proofing function with excellent antifreezing ability and antiperspirant, Asphalt to allow construction Chaksik banggeun to provide a waterproof sheet and be near the room using the same method has its purpose.

According to the present invention, the above object can be accomplished by providing a method of producing a polyethylene terephthalate (PET) film, a polyvinyl chloride (PVC) film, an ethylene-vinyl acetate polymer (EVA) A thermoplastic polyurethane (TPU) film, an HDPE (High Density Polyethylene) film, or the like is laminated or laminated on the upper surface of the protective film layer, and; An aluminum layer formed on the lower portion of the film layer and made of a thin film; A glass fiber mesh net formed below the aluminum layer and having a net structure; (IIR) or NBR (Nitrile Butadiene Rubber), which is formed on the glass fiber mesh net and is composed of 30 to 40 wt% of mixed asphalt, 10 to 15 wt% of styrene butadiene styrene copolymer (SBS) as thermoplastic rubber, 1 to 5 wt% of a rubber, 10 to 15 wt% of a plasticizer, 10 to 20 wt% of a filler, 3 to 10 wt% of a tackifier, 1 to 2 wt% of a tackifier, 0.1 to 2 wt% of a tackifier, 5% by weight of an asphalt compound layer; And a releasing paper adhered to the lower surface of the asphalt compound layer.

The protective mesh layer may further include a mesh network formed by attaching one or both of the glass fiber yarn and the metal yarn to the lower surface of the protective film layer.

In addition, it is preferable to further include a wet adhesion layer formed on the lower part of the asphalt compound layer and having a plurality of bonding holes formed in a through-hole and water-soluble PVA (polyvinyl alcohol).

Meanwhile, the above-mentioned object can be accomplished by a primer application step of applying a non-solvent primer to a base surface to be applied; A step of installing a waterproof antiperspirant sheet according to claim 1; A sheet-interlocking step of overlapping or abutting at least one of both ends of the one asphalt-adhered waterproofing antifungal sheet with one of both ends of the other asphalt-adhered waterproof antifungal sheet; And a joining portion forming step of joining an adhesive tape made of an aluminum material to the joining portion.

Here, it is preferable that the step of applying the sheet further includes a urethane coating step of applying urethane to the upper surface of the asphalt-adhered waterproof antifungal sheet.

The present invention provides an asphalt compound layer based on mixed asphalt so as to have a strong adhesive force and an adhesive strength and is firmly adhered to a concrete base surface to have excellent adhesive function and permeability, By minimizing the shrinkage due to temperature, it maximizes the effect of blocking the water leakage, and when the wet adhesion layer is formed on the lower side of the asphalt compound layer with the PVA material soluble in water, even if it is applied to the wet surface, So that the adhesive force of the asphalt compound layer can be assured.

The asphalt compound layer is protected from ultraviolet rays, and the protective film layer having excellent heat resistance and tear strength is formed on the upper part of the asphalt compound layer to protect the asphalt compound layer from external environment. In addition, aluminum The aluminum layer of the material and the glass fiber mesh net are formed to strengthen the bonding force between the protective film layer and the asphalt compound layer so that the roots of the plant are removed from the upper part of the asphalt compound layer by the protective film layer, To make the primary waterproofing and anticorrosive effect possible, and to make the asphalt compound layer conform to the behavior of the concrete base surface, and to fill this crack tightly when cracks occur, thereby maximizing the waterproof effect .

Particularly, by installing the waterproof antifouling sheet according to the present invention on the ground, the construction time is greatly shortened due to the completion of the waterproof and anticorrosive coating, thereby reducing the construction time and personnel cost by reducing the construction cost Effect.

The waterproof antiperspirant sheet according to the present invention and the waterproof antiperspirant method using the same will now be described.

First, the asphalt-bonded waterproofing barrier sheet according to the present invention comprises a protective film layer, an aluminum layer, a glass fiber mesh network, an asphalt compound layer and a release paper (not shown).

A polyethylene terephthalate (PET) film, a polyvinyl chloride (PVC) film or a polyvinyl chloride (PET) film, which is excellent in elongation, tensile strength and weatherability and is low in price, is formed within a thickness of 0.07 mm to 0.08 mm dlm , An ethylene-vinyl acetate polymer (EVA) film, a nonwoven fabric, a TPO (anmoplastic polyolefin membrane) film, an ethylene-propylene-copolymer (EPM) film, a TPU (thermoplastic polyurethane) film, or an HDPE Two or more layers are laminated or lapped, and then a heat-insulating aqueous ceramic paint is coated on the upper surface.

In addition, an aluminum layer formed of a thin aluminum film is formed under the protective film layer to prevent the oil of the asphalt compound layer, which will be described later, from being oxidized, and also to inhibit penetration of the root of the plant at the upper part of the protective film layer And a glass fiber mesh net having a net structure is attached to the lower part of the aluminum layer to form a combination or adhesion property of an asphalt compound layer and an aluminum layer to be described later And the binding force.

In this case, after forming a mesh network of net structure with a mixed yarn in which a glass fiber yarn and a metal yarn are folded together, the mesh web can be attached between the protective film layer and the aluminum layer, Is preferably applied to the asphalt-padded waterproofing antifouling sheet according to the present invention so as to improve the antifouling performance.

On the other hand, an asphalt compound layer formed on the basis of the mixed asphalt is formed in the lower part of the glass fiber mesh net, and 30 to 40 wt% of mixed asphalt is formed in the lower part of the glass fiber mesh net. SBS (Styrene Butadiene Styrene Copolymer) 10 to 15% by weight of an adhesive agent, 1 to 5% by weight of an isobutylene isoprene rubber (IIR) or NBR To 10% by weight of an antioxidant, 1 to 2% by weight of an antifogging agent, 0.1 to 2% by weight of an antioxidant, and 0.5 to 5% by weight of an adhesion promoter.

The mixed asphalt of the composition of the asphalt compound layer has a penetration degree of AP-5 (expressed as 10 times the number of penetration depth measured in mm in 5 seconds of a needle having a specified temperature of 25 캜 and a load of 100 g in a sample) (Penetration of 80 mm - 100 mm, low boiling point) of 60 to 80 mm, high boiling point, heat resistance, softening point, tensile strength, adhesive strength, water permeability and water absorbency have.

In the present invention, the heat resistance, the tensile strength and the adhesive strength are improved by mixing AP-5: AP-3 at a mixing ratio of 10 wt% to 30 wt%: 70 wt% to 90 wt% The addition of more than 30 wt% leads to a decrease in cold resistance, which causes cracking of the sheet and a decrease in heat resistance due to an increase in plasticizer content .

In order to improve the material performance of the product while solving various problems caused by the AP-5 input, the present invention adds thermoplastic synthetic rubber to the asphalt compound layer, so that the waterproof sheet is not broken even at a low temperature. The AP-5 can be charged in the present invention because it does not flow well.

When the AP-5 alone is used in an amount of 30% by weight or less based on the total weight of the composition of the asphalt compound layer, the butadiene monomer (butadiene monomer) of the synthetic rubber at the time of polymerization is reduced due to deterioration of the content of maltenes in the physical properties of asphalt. Only a part of them are combined to deteriorate physical properties such as deterioration of adhesive strength, decrease of heat resistance and elasticity.

On the other hand, when AP-3 alone is used, the cost can be lowered, but all properties such as cold resistance and heat resistance are degraded, and the function of the waterproof sheet is remarkably deteriorated.

Therefore, in the present invention, it is most preferable to employ a mixed asphalt obtained by mixing AP-3 having a higher petrolene content than AP-3 alone and AP-5 having a higher content of maltene in an appropriate ratio as described above Do.

When the mixed asphalt is added in an amount of 30 wt% to 40 wt% to improve the heat resistance, the tensile strength, the adhesive strength, and the like, the added mixed asphalt is added to the asphalt compound layer in an amount of 30 wt% The effect is insignificant. If it is added in an amount of more than 40% by weight, the low-temperature cohesive force function is remarkably deteriorated due to the decrease in cold resistance.

When the asphalt composite material is mixed with a mixed modulus of styrene butadiene styrene (SBS), which is a thermoplastic rubber, in the composition of the asphalt compound layer, the asphalt has rubbery elasticity, and the maltene component in the asphalt is modified It is absorbed by ash and the volume is expanded to 5 to 7 times. In addition, initially, the modifier is present in a dispersed form in the asphalt, but when the addition amount is increased, the volume is increased by the expansion of the modifier.

The styrene butadiene styrene (SBS) improves adhesiveness, elasticity, flexibility, tensile strength and compatibility between raw materials to improve adhesion, and is a polymer which is closely related to workability (raw material compounding). Asphalt compound but if it is added in an amount less than 10% by weight of the total composition of the above-mentioned asphalt compound layer, the adhesive strength is lost. On the other hand, if it is added in an amount exceeding 15% by weight, the viscosity increases with an increase in the content of asphaltene, And the viscosity is lowered, and the cost of the product is increased due to the excessive addition of the high-SBS.

Isobutylene Isoprene Rubber (IIR) or NBR (Nitrile Butadiene Rubber) synthetic rubber, which is a pressure-sensitive adhesive in the composition of the asphalt compound layer, is lower in cost than general synthetic rubber, so that the unit price can be reduced, It is possible to reduce the amount of asphalt by increasing the weight of the high-elasticity synthetic rubber without being easily damaged by pressure or impact, and to cause the asadiene to penetrate into the asphaltene of the asphalt, When the content of the asphalt compound layer is less than 1% by weight, the effect of increasing the weatherability is lost. When the asphalt composition layer is added, the increase in temperature raises the temperature naturally. The price increases due to the high price of the elderly, and the homogeneity deteriorates due to the lowering of dispersibility.

Among the compositions of the above-mentioned asphalt compound layer, plasticizers are classified into vegetable and petrochemical, and vegetable oils include flaxseed oil, pizza oil, refined oil and vegetable oil, and linseed oil contains a large amount of unsaturated acids such as linoleic acid and linolenic acid, And it is absorbed by oxygen when it is left in the air to be polymerized. As a result, rinoxin, which is a translucent water-resistant and water-resistant polymer material, is generated and widely used for industrial purposes such as paints, varnishes and printing inks.

The function of the above plasticizer is to assist in imparting an adhesive function, improving compatibility between polymers, and imparting plasticity in a compound, thereby improving workability and changing physical properties to have excellent properties.

The plasticizer is added in an amount of 10 to 15 wt% based on the total weight of the asphalt compound layer. When the plasticizer is added in an amount of less than 10 wt%, the flexibility of the product is lowered and the adhesive function is lowered due to high viscosity. And the viscosity of the composition is lowered when the addition amount is more than 15% by weight. As a result, the viscosity of the composition is lowered, and the flow-down occurs again at a high temperature, And the tension of the waterproof antifreeze sheet is also lowered due to the delay of the working time and the increase of the labor cost due to the inconvenience of the construction such as the phenomenon that the waterproof antifreeze sheet is not uniformly removed when the release sheet is peeled,

Among the compositions of the asphalt compound layer, 10 to 20% by weight of calcium carbonate (caco3) is added, which is inexpensive and improves the bonding force between various polymers.

When the filler is added in an amount of less than 10% by weight, the effect is insufficient and only the specific gravity is increased. When the filler is added by 20% by weight or more, the price reduction effect is caused. And is difficult to install, and a phenomenon of falling when the wall is installed occurs. Here, the filler is added for the purpose of improving the bonding strength, the price reduction effect, and the adhesive strength.

The tackifier in the composition of the asphalt compound layer may be a natural resin, a petrochemical resin, a Coumarone-Indene Resins or a Terpene-Phenolic Resin or a Polybutene or a hydrogenated rosin The adhesion of each of the polymers, the adhesion of the waterproof sheet and the heat resistance are improved by adding a hydrogenated ester of resin or the like so that the adhesive can be attached without the need of a separate adhesive or soil, (Benzene, toluene, xylene, phenol) having a benzene nucleus and an aliphatic compound having a chain-like polymer (methanol, formaldehyde, polyethylene, (C-5 / C-9), which is a small amount of aromatic added to an aliphatic petrochemical resin (C-5) The use of chemical resin.

The tackifier is preferably contained in an amount of 3 to 10 wt% based on the total weight of the asphalt compound layer. When the tackifier is added in an amount of less than 3 wt%, a small amount of a tackifier having a high tack is added, , The heat resistance is lowered due to reasons such as deterioration of bonding strength between the other materials, and when it is added by more than 10% by weight, the price is increased and it becomes hard at low temperature, inconvenience of construction and easily oxidized by ultraviolet rays, Weatherability is poor.

In order to prevent the asphalt compound layer from flowing down at a high temperature, the flow inhibitor of the composition of the asphalt compound layer may be selected by adding one of cellulosic and clay having a light specific weight and absorbency, .

However, when it is added in an amount of less than 1% by weight based on the total weight of the asphalt composition layer, a great effect can not be obtained. When the added amount exceeds 2% by weight, plasticizer added is absorbed to deteriorate fluidity, .

Most antioxidants in the composition of the asphalt compound layer are hardly added due to a rise in cost. However, in order to prevent the compound from being oxidized by oxygen or ultraviolet rays in the air to lose the function of the waterproof antifouling sheet, 0.1 wt.% To 2 wt.% Of an antioxidant selected from one or more selected from the group consisting of phenanthroline, phenanthrene, sulfuric acid and amine is added in an amount of 0.1 wt% to 2 wt% If the addition amount is less than 0.1% by weight, the effect is not produced and the cost increases only. If the addition amount is more than 2% by weight, the addition amount after the proper addition does not work and serves only as a filler.

When the amount of the adhesion promoter is less than 0.5% by weight, the viscosity of the asphalt compound layer changes, that is, the viscosity of the asphalt compound layer does not change, When added in an amount exceeding 5% by weight, the viscosity is too low to flow at a high temperature, the adhesive force is decreased, and the cost of the high-speed waterproof antifogging sheet of the pressure-sensitive adhesive is increased.

A detachable release paper is attached to the lower part of the asphalt composite layer formed as described above to produce an asphalt-adhered waterproof protective sheet.

Here, a wet adhesion layer formed of polyvinyl alcohol (PVA) that melts in water is formed under the asphalt compound layer, and a plurality of bonding holes are formed in the wet adhesion layer as shown in FIG. 1, When the wet adherent layer absorbs moisture or moisture, the asphalt compound layer exposed to the bonding hole can be strongly bonded to the base surface, and the asphalt-adhered waterproof antifungal sheet is adhered to the base surface, Even if it is introduced, the wet adhesion layer absorbs the influent water, thereby preventing leakage of water.

The asphalt-bonded waterproofing sheet according to the present invention is improved in the barrier function due to the ceramic coated protective film layer, the underlying mesh net and the aluminum layer, and at the same time, the durability of the product is improved through the ultraviolet shielding effect, and the asphalt compound The layer penetrates into the fine gaps of the adhered surface to exhibit a waterproof function and exhibits a strong adhesive force to any adhered surface, so that it is not necessary to attach a waterproof antiperspirant sheet using any tool, and the construction of the waterproof antiperspirant sheet is very fast There are advantages to being convenient.

The waterproofing and antistatic method using the asphalt-adhered waterproofing antifungal sheet according to the present invention will be described as follows.

First, a primer application step of applying a non-solvent primer to the base surface to be applied to the waterproof anticorrosive is performed, and then a sheet installation step is performed in which the waterproof antiperspirant sheet is placed on the base surface.

Here, in the step of installing the sheet, a urethane coating step of applying urethane to the upper surface of the asphalt-adhered waterproof antifungal sheet may be further carried out.

At least one of the two ends of the asphalt-adhered waterproofing antifungal sheet is sandwiched between one of the opposite ends of the other one of the asphalt-adhered waterproof antifungal sheets So as to form a joint portion.

Then, by performing a joint forming step of bonding an adhesive tape made of an aluminum material to the joint, a waterproof and antistatic method using the asphalt-adhered waterproof antifungal sheet is completed.

Claims (5)

A polyethylene terephthalate film, a polyvinyl chloride film, an ethylene-vinyl acetate polymer (EVA) film, a nonwoven fabric, a TPO film, an ethylene-propylene-copolymer (EPM) film, A protective film layer in which at least one or two or more of TPU (Thermoplastic Polyurethane) film and HDPE (High Density Polyethylene) film are laminated or laminated and coated with a heat-resistant aqueous ceramic paint on the upper surface, A glass fiber mesh net formed at a lower portion of the aluminum layer and made of a net structure; a glass fiber mesh net net formed at a lower portion of the glass fiber mesh net, comprising 30 to 40 wt% of mixed asphalt, 10 to 15% by weight of SBS (Styrene Butadiene Styrene Copolymer), 1 to 5% by weight of an isobutylene isoprene rubber (IIR) or NBR (Nitrile Butadien Rubber) synthetic rubber, An asphalt compound layer composed of 15 to 15 wt% of a filler, 10 to 20 wt% of a filler, 3 to 10 wt% of a tackifier, 1 to 2 wt% of an antistatic agent, 0.1 to 2 wt% of an antioxidant, and 0.5 to 5 wt% And a releasing paper adhered to a lower surface of the asphalt compound layer, wherein the asphalt-
Wherein a plurality of bonding holes are formed in the lower portion of the asphalt compound layer to adhere a wet adhesion layer formed of PVA (polyvinyl alcohol) dissolving in water and a release paper adhere to a lower portion of the wet adhesion layer, Waterproof antiperspirant sheet.
A primer applying step of applying a solventless primer to a base surface to be applied;
A polyethylene terephthalate film, a polyvinyl chloride film, an ethylene-vinyl acetate polymer (EVA) film, a nonwoven fabric, a TPO film, an ethylene-propylene-copolymer (EPM) film, A protective film layer in which at least one or two or more of TPU (Thermoplastic Polyurethane) film and HDPE (High Density Polyethylene) film are laminated or laminated and coated with a heat-resistant aqueous ceramic paint on the upper surface, A glass fiber mesh net formed at a lower portion of the aluminum layer and made of a net structure; a glass fiber mesh net net formed at a lower portion of the glass fiber mesh net, comprising 30 to 40 wt% of mixed asphalt, 10 to 15% by weight of SBS (Styrene Butadiene Styrene Copolymer), 1 to 5% by weight of an isobutylene isoprene rubber (IIR) or NBR (Nitrile Butadien Rubber) synthetic rubber, An asphalt compound layer composed of 15 to 15 wt% of a filler, 10 to 20 wt% of a filler, 3 to 10 wt% of a tackifier, 1 to 2 wt% of an antistatic agent, 0.1 to 2 wt% of an antioxidant, and 0.5 to 5 wt% A plurality of bonding holes are formed in the lower part of the asphalt compound layer, and a wet adhesion layer formed of polyvinyl alcohol (PVA) dissolving in water is adhered, and an asphalt-adhered waterproofing antifouling sheet having a release paper under the wet adhesion layer is installed A seat cushioning step;
A sheet-interlocking step of overlapping or abutting at least one of both ends of the one asphalt-adhered waterproofing antifungal sheet with one of both ends of the other asphalt-adhered waterproof antifungal sheet;
And a joining portion forming step of joining an adhesive tape made of an aluminum material to the joining portion.
3. The method of claim 2,
Wherein the step of applying the sheet further comprises a urethane coating step of applying urethane to the upper surface of the asphalt-adhered waterproofing antifungal sheet.

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