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KR-102962606-B1 - Roof waterproofing method and roof waterproofing structure thereby

KR102962606B1KR 102962606 B1KR102962606 B1KR 102962606B1KR-102962606-B1

Abstract

The present invention relates to a rooftop waterproofing construction method and a rooftop waterproofing construction structure implemented by covering a rooftop of a building with a multifunctional waterproof sheet and then applying a waterproofing coat thereon. The method comprises: a multifunctional waterproof sheet preparation step of preparing a multifunctional waterproof sheet that is environmentally friendly and possesses waterproofing, thermal insulation, thermal insulation, and flexibility; a multifunctional waterproof sheet covering step of covering the construction surface of a rooftop of a building with the multifunctional waterproof sheet prepared in the multifunctional waterproof sheet preparation step; and a waterproofing coat application step of applying a waterproofing coat over the multifunctional waterproof sheet covered in the multifunctional waterproof sheet covering step.

Inventors

  • 안영근

Assignees

  • 주식회사 보광산자

Dates

Publication Date
20260513
Application Date
20230207

Claims (5)

  1. A multifunctional waterproof sheet preparation step for preparing a multifunctional waterproof sheet that is eco-friendly and possesses waterproofing, thermal insulation, thermal insulation, and flexibility; a multifunctional waterproof sheet covering step for covering the construction surface of a building rooftop with the multifunctional waterproof sheet prepared in the multifunctional waterproof sheet preparation step; and a waterproof coat application step for applying a waterproof coat over the multifunctional waterproof sheet covered in the multifunctional waterproof sheet covering step; The above multi-functional waterproof sheet preparation step involves preparing a multi-functional waterproof sheet composed of a lower non-woven fabric located at the bottom, a TPE located in the middle, and an upper non-woven fabric located at the top, by laminating; preparing the upper non-woven fabric by forming an embossing on the surface of the upper non-woven fabric; and on a workbench for preparing the multi-functional waterproof sheet, after placing the lower non-woven fabric at the bottom, placing the TPE on top of the lower non-woven fabric, placing the upper non-woven fabric on top of the TPE, and then heat-pressing the laminated lower non-woven fabric, TPE, and upper non-woven fabric to prepare the multi-functional waterproof sheet. A rooftop waterproofing construction method characterized in that the lower nonwoven fabric has a darker color than the upper nonwoven fabric and has a thickness of 250 g/㎡, the TPE has eco-friendliness, flexibility, water resistance, thermal insulation and thermal insulation and has a thickness of 350 to 1000 g/㎡, and the upper nonwoven fabric has a thickness of 150 g/㎡.
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  5. A rooftop waterproofing construction structure characterized by being formed by the rooftop waterproofing construction method of claim 1.

Description

Roof waterproofing construction method and roof waterproofing construction structure thereby The technical field of the present invention relates to a rooftop waterproofing construction method and a rooftop waterproofing construction structure based thereon, and in particular, to a rooftop waterproofing construction method and a rooftop waterproofing construction structure based thereon, which is implemented by covering the rooftop of a building with a multifunctional waterproof sheet and then applying a waterproofing coat thereon. Rooftops of buildings such as office buildings, apartments, and commercial complexes are susceptible to freezing of infiltrating water due to temperature fluctuations caused by the alternating summer and winter seasons, corrosion, or deterioration caused by the atmosphere or sunlight. Therefore, waterproofing is essential for rooftops to block moisture and heat exposed from the outside. Furthermore, waterproofing for rooftop maintenance requires removing the existing waterproofing layer before repair. Since liquid waterproofing allows water to penetrate approximately 1 to 3 mm from the surface, and the rooftop exterior corrodes to the depth of this penetration during the repeated freezing and thawing cycles, rust or corroded areas must be removed before application. For such rooftop waterproofing construction, depending on the building's components, constituent materials, or waterproofing agents, asphalt waterproofing, sheet waterproofing, membrane waterproofing, and urethane waterproofing methods, as well as composite waterproofing methods that selectively combine these, are applied according to the situation. Asphalt waterproofing construction methods have been used for the longest time and, although they provide waterproofing, they have the disadvantage of being complex, inconvenient, and expensive to construct because they involve a complex process of using sand or sheets and applying heat to prevent the flow of asphalt oil. The sheet waterproofing construction method involves manufacturing sheets of materials such as synthetic rubber to have a specific thickness and width, and adhering them to the waterproofing surface at the construction site to form a waterproof layer. While this method offers the advantages of easy realization of required physical properties through various lamination structures during manufacturing and convenient installation, it has disadvantages such as difficulty in applying to complex areas, poor watertightness at seams between sheets, and the need for manual work to ensure watertightness. Membrane waterproofing construction methods primarily use epoxy, urethane, acrylic resin, or asphalt as main materials, mixed with organic solvents as diluents. However, these methods have disadvantages, such as the use of volatile organic solvents like VOCs and formaldehyde, which are harmful to the human body, emit strong odors, are not environmentally friendly, and are dangerous due to their flammability. The urethane waterproofing method involves preparing the floor surface, applying a primer to allow sufficient penetration and drying, and then applying liquid urethane resin to the floor surface to form a urethane film, thereby achieving a waterproofing effect. While it has the advantages of good adhesion to concrete surfaces and excellent elasticity, allowing it to maintain a certain degree of waterproofing even in the event of cracks, it has disadvantages. Since it is a method that adheres tightly to the floor surface, it is difficult to fundamentally resolve cracks once they occur. Furthermore, severe temperature changes, moisture evaporation from the concrete, or cracks in the floor concrete can cause blistering or damage to the applied urethane film, and continuous peeling may occur, leading to a decrease in the building's waterproofing performance and durability. Korean Registered Patent No. 10-2187841 (registered on Dec. 01, 2020) discloses a waterproofing construction method using a composite waterproofing sheet that allows for construction without removing a waterproofing layer already installed on a building roof, thereby reducing waste disposal costs and resources associated with removal; prevents cracking in the waterproofing layer through partial insulation construction; enables construction even after rain by installing a degassing device on the wall; and continuously discharges and dries moisture remaining in the waterproofing layer after construction, thereby preventing cracking in the waterproofing layer due to frost damage in winter, discharges heat in summer along with moisture, maximizes the thermal insulation effect of the composite waterproofing sheet in winter, blocks heat through topcoat finishing treatment, minimizes temperature changes throughout the four seasons, reduces heating and cooling costs through energy savings resulting from heat reflection and condensation prevention, has excellent corrosion resistance and durability against