Building roof construction system with improved waterproofing performance

Abstract

According to the building rooftop construction system with improved waterproofing performance of the present invention, a control means comprising a vertical rail, a vertical moving platform, a horizontal rail, a horizontal moving platform, a lifting platform, a sprayer, a temperature sensor, a humidity sensor, an anemometer, a distance measuring device, a memory unit, a control unit, a communication unit, and a worker terminal is provided. By reflecting mixing ratio data based on the temperature, humidity, and wind speed of the construction site, and application process data including the number of applications and drying times of spray height, spray speed, spray width, row overlap width, horizontal movement speed, oil-based primer film layer, intermediate heat-insulating waterproof film layer, and topcoat heat-insulating waterproof film layer, as well as the revolutions per minute of the vertical and horizontal moving motors and the travel distance per revolution of the vertical and horizontal traveling rollers, rooftop construction is performed. This enables energy saving by lowering the internal temperature of the building through effective heat insulation and thermal insulation against solar heat, and increases the durability of the building by protecting the performance of the waterproof film, while always regardless of the worker's skill level. Homogeneous construction quality can be obtained.

Description

Technology Field

[0001] The present invention relates to a building rooftop construction system with improved waterproofing performance in the field of waterproofing technology. More specifically, it relates to a building rooftop construction system with improved waterproofing performance that enables rooftop construction by reflecting mixing ratio data according to the temperature, humidity, and wind speed of the construction site, application process data including the number of applications and drying times of the spray height, spray speed, spray width, row overlap width, lateral movement speed, oil-based primer film layer, intermediate heat-insulating waterproof film layer, and top layer heat-insulating waterproof film layer, and the rotational speed per minute of the vertical movement motor and horizontal movement motor, and the travel distance per revolution of the vertical travel roller and horizontal travel roller. By effectively reflecting and insulating against solar heat, the internal temperature of the building can be lowered to save energy, and the durability of the building can be increased by protecting the performance as a waterproof film, while ensuring that homogeneous construction quality can always be obtained regardless of the skill level of the worker. Background Technology

[0002] Amidst the recently worsening climate change and energy crisis, improving the energy efficiency of buildings is an urgent task. In particular, building rooftops are directly exposed to solar heat, becoming a major cause of indoor temperature rise, and waterproofing layers are susceptible to damage from frequent temperature fluctuations and ultraviolet rays. Existing waterproofing systems have problems such as insufficient heat insulation performance or a lack of long-term durability.

[0003] Furthermore, existing waterproofing methods often caused condensation problems on concrete roofs due to insufficient water vapor permeability, or had short lifespans due to susceptibility to ultraviolet rays. Additionally, while separate thermal insulation coatings are sometimes applied to improve heat insulation performance, maintaining long-term performance was difficult due to weak adhesion to the waterproofing layer.

[0004] Although much research has been conducted to solve these problems, a perfect solution that satisfies all three functions—heat shielding, thermal insulation, and waterproofing—has not been presented.

[0005] As prior art for solving these problems, Korean Registered Patent No. 10-2755098 (January 10, 2025), titled "High-efficiency rooftop heat-insulating waterproof coating system and method of construction thereof," discloses a technology that can save energy by lowering the internal temperature of a building through effective heat insulation and thermal insulation against solar heat when installed on a rooftop, and can increase the durability of a building by protecting its performance as a waterproof coating.

[0006] However, Registered Patent No. 10-2755098 involves sequentially applying an oil-based primer layer, an intermediate heat-insulating waterproofing layer, and a top layer of heat-insulating waterproofing. Since the oil-based primer, intermediate heat-insulating waterproofing agent, and top layer of heat-insulating waterproofing agent are formulated without considering environmental variables at the construction site, such as temperature, humidity, and wind speed, they cannot be formulated with the correct mixing ratio, resulting in a problem where the desired objective cannot be achieved.

[0007] Furthermore, since the process of applying an oil-based primer, an intermediate heat-insulating waterproofing agent, and a topcoat heat-insulating waterproofing agent to form the oil-based primer, intermediate heat-insulating waterproofing, and topcoat heat-insulating waterproofing layers relies on manual labor, the spray height from the nozzle to the surface to be coated cannot be consistently maintained due to construction site environmental variables including temperature, humidity, and wind speed. Consequently, not only is it impossible to apply a uniform coating, but there is also a problem where construction quality deteriorates depending on the skill level of the worker. Prior art literature

[0008] Republic of Korea Published Patent No. 10-2009-0112912 (Oct. 29, 2009) "Method for constructing a ceramic waterproofing thermal insulation layer on a rooftop" Republic of Korea Registered Patent No. 10-1802113 (Nov. 21, 2017) "Membrane waterproofing layer for a building and waterproofing method using the same" Republic of Korea Registered Patent No. 10-2247690 (April 27, 2021) "Waterproofing method for concrete structures using polyurea and waterproofing structure thereof" Republic of Korea Registered Patent No. 10-10-2755098 (January 10, 2025) "High-efficiency rooftop heat-insulating waterproofing membrane system and method for constructing the same" The problem to be solved

[0009] Therefore, the objective of the present invention is to provide a building rooftop construction system with improved waterproofing performance that enables rooftop construction by reflecting mixing ratio data according to the temperature, humidity, and wind speed of the construction site, application process data including the number of applications and drying times of the spray height, spray speed, spray width, row overlap width, lateral movement speed, oil-based primer film layer, intermediate heat-insulating waterproof film layer, and topcoat heat-insulating waterproof film layer, and the rotational speed per minute of the vertical and horizontal movement motors and the travel distance per revolution of the vertical and horizontal travel rollers, thereby allowing for rooftop construction to be carried out, and saving energy by lowering the internal temperature of the building through effective heat insulation and thermal insulation against solar heat, and increasing the durability of the building by protecting the performance as a waterproof film, while always obtaining homogeneous construction quality regardless of the skill level of the worker. means of solving the problem

[0010] To achieve the above objectives, the present invention relates to a rooftop construction system for a building with improved waterproofing performance, comprising: a rooftop floor surface preparation step of cleaning the rooftop floor surface and repairing cracks or lifted parts; a step of forming an oil-based primer film layer by applying an oil-based primer to the rooftop floor surface where the rooftop floor surface preparation step has been performed and drying it; a step of forming an intermediate heat-insulating waterproofing film layer by applying an intermediate heat-insulating waterproofing agent on the oil-based primer film layer and drying it; and a step of forming a top-coat heat-insulating waterproofing film layer by applying a top-coat heat-insulating waterproofing agent on the intermediate heat-insulating waterproofing film layer; wherein the system comprises a vertical rail base that is fixedly seated on the upper surface of a rooftop railing, and a vertical rail including a vertical running protrusion and a vertical supporting protrusion formed to protrude over the entire length of the upper surface of the vertical rail base. A vertical moving platform comprising: a main body having a plurality of vertical bearing plates formed on its lower surface; a vertical driving roller and a vertical supporting roller supported by the vertical bearing plates and making rolling contact with the vertical driving protrusion and the vertical supporting protrusion; a vertical moving motor mounted on the upper surface of the main body of the vertical moving platform and having a vertical moving motor shaft; a vertical moving driving gear coupled to the vertical moving motor shaft; and a vertical moving driven gear coupled to the vertical driving roller and meshing with the vertical moving driving gear; a horizontal rail comprising a horizontal rail base fixed to the main bodies of the left and right vertical moving platforms, and a horizontal driving protrusion and a horizontal supporting protrusion formed protruding over the entire length of the upper surface of the horizontal rail base; A vertical moving member body having a plurality of horizontal axle support pieces formed on its lower surface; a horizontal driving roller and a horizontal supporting roller supported by the horizontal axle support pieces and rolling in contact with the horizontal driving protrusion and the horizontal supporting protrusion; a horizontal moving motor mounted on the upper surface of the vertical moving member body and having a horizontal moving motor shaft; a horizontal moving drive gear coupled to the horizontal moving motor shaft; and a horizontal moving member including a horizontal moving driven gear coupled to the horizontal driving roller;A lifting platform comprising: a lifting platform base located below the above-mentioned horizontal rail and coupled to the main body of the horizontal moving platform; a lifting plate located below the lifting platform base; a plurality of lifting guide rods fixed to the upper surface of the lifting plate and penetrating a lifting guide hole formed in the lifting platform base; a lifting drive motor mounted on the upper surface of the lifting plate and having a lifting drive motor shaft; a lifting drive screw rod coupled to the lifting drive motor shaft; and a lifting drive screw hole formed in the lifting platform base and screw-fitted to the lifting drive screw rod; and a sprayer having a built-in spray pump capable of adjusting the spray width to a narrow width and a pattern adjustment valve, and connected by a hose to a waterproofing agent tank loaded on the upper part of the lifting platform base. A temperature sensor, humidity sensor, anemometer, and distance measuring device that output temperature, humidity, wind speed, and distance measurement data for each construction site; mixing ratio data according to temperature, humidity, and wind speed; application process data including spray height, spray speed, spray width, row overlap width, lateral movement speed, number of applications and drying time of oil-based primer film layer, intermediate heat-insulating waterproof film layer, and topcoat heat-insulating waterproof film layer; a memory unit that stores the revolutions per minute of the vertical movement motor and horizontal movement motor, and the travel distance per revolution of the vertical travel roller and horizontal travel roller; a control unit that reads the mixing ratio data and application process from the memory unit according to the temperature, humidity, wind speed, and distance measurement data at the construction site to output the mixing ratio, and controls the vertical movement motor, horizontal movement motor, lifting drive motor, spray pump of the sprayer, and pattern adjustment valve according to the application process; a communication unit that transmits and receives data and signals; and a device that transmits and receives data and signals to and from the communication unit. A building rooftop construction system with improved waterproofing performance is provided, comprising a control means including a worker terminal.

[0011] Furthermore, the building rooftop construction system with improved waterproofing performance according to the present invention transmits a construction start signal when the construction start button displayed on the worker terminal is touched, the communication unit receives the construction start signal and transmits it to the control unit, the control unit controls the operation of the temperature sensor, humidity sensor, anemometer, and distance measuring device according to the construction start signal, the temperature sensor, humidity sensor, and anemometer each measure the temperature, humidity, and wind speed of the construction site and output temperature measurement data, humidity measurement data, and wind speed measurement data, respectively, the control unit receives the temperature measurement data, humidity measurement data, and wind speed measurement data, reads the mixing ratio from the memory unit according to the temperature measurement data, humidity measurement data, wind speed measurement data, and distance measurement data, and transmits it through the communication unit, the worker terminal receives the mixing ratio of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent and displays it on the mixing ratio display window, the vertical length and horizontal width of the rooftop floor surface are input into the application range display window displayed on the worker terminal, and when the application range transmission button is touched, the input vertical length and horizontal width data are transmitted, and when the application start button is touched A coating start signal is transmitted, and the communication unit receives the vertical length and horizontal width data and the coating start signal and transmits them to the control unit; the control unit controls the lifting drive motor according to the distance measurement data transmitted from the distance measuring device and the spray height read from the memory unit to raise and lower the lifting platform and the sprayer so that the sprayer’s spray height becomes the spray height; the control unit controls the horizontal movement motor and the sprayer according to the received coating start signal so that the horizontal movement platform, the lifting platform, and the sprayer move in the horizontal direction at a horizontal movement speed, and according to the stages, the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent are sprayed from the sprayer to form an oil-based primer film layer, an intermediate heat-insulating waterproofing film layer, and a topcoat heat-insulating waterproofing film layer; the control unit calculates the revolutions per minute of the horizontal movement motor read from the memory unit and the travel distance per revolution of the horizontal travel roller to determine the time when one row of coating is completed and stops the horizontal movement motor and the sprayer.The above control unit operates a vertical movement motor according to the spray width and row overlap width read from the memory unit, causing the vertical movement platform, horizontal rail, horizontal movement platform, elevator platform, and sprayer to move in the vertical direction to a position for applying two rows; when the value obtained by dividing the vertical length of the rooftop floor surface by the sum of the spray width and row overlap width is n, horizontal movement proceeds n times and vertical movement proceeds n-1 times to complete one application; and when the application process of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent proceeds for the respective number of applications, the formation of the oil-based primer film layer (L10), intermediate heat-insulating waterproofing film layer (L20), and topcoat heat-insulating waterproofing film layer (L30) is completed, and the above control unit controls the vertical movement motor, horizontal movement motor, elevator drive motor, and sprayer to stop, thereby terminating the construction. Effects of the invention

[0012] According to the building rooftop construction system with improved waterproofing performance of the present invention, a control means comprising a vertical rail, a vertical moving platform, a horizontal rail, a horizontal moving platform, a lifting platform, a sprayer, a temperature sensor, a humidity sensor, an anemometer, a distance measuring device, a memory unit, a control unit, a communication unit, and a worker terminal is provided. By reflecting mixing ratio data based on the temperature, humidity, and wind speed of the construction site, and application process data including the number of applications and drying times of spray height, spray speed, spray width, row overlap width, horizontal movement speed, oil-based primer film layer, intermediate heat-insulating waterproof film layer, and topcoat heat-insulating waterproof film layer, as well as the revolutions per minute of the vertical and horizontal moving motors and the travel distance per revolution of the vertical and horizontal traveling rollers, rooftop construction is performed. This enables energy saving by lowering the internal temperature of the building through effective heat insulation and thermal insulation against solar heat, and increases the durability of the building by protecting the performance of the waterproof film, while always regardless of the worker's skill level. Homogeneous construction quality can be obtained. Brief explanation of the drawing

[0013] FIGS. 1 to 8 show preferred embodiments of a building rooftop construction system with improved waterproofing performance according to the present invention. FIG. 1 is an overall perspective view, FIG. 2 is an exploded perspective view of a vertical rail and a vertical moving platform. FIG. 3 is an exploded perspective view of the horizontal rail and the horizontal moving platform. FIG. 4 is an exploded perspective view of the platform and the sprayer. FIG. 5 is a block diagram showing a control means, FIG. 6 is a front view showing the lifting operation, FIG. 7 is a flowchart for explaining a building rooftop construction system with improved waterproofing performance according to the present invention. FIG. 8 is a cross-sectional view of a rooftop waterproofing construction state according to the present invention. Specific details for implementing the invention

[0014] Hereinafter, a building rooftop construction system with improved waterproofing performance according to the present invention will be described in detail according to a preferred embodiment illustrated in the attached drawings.

[0015] FIGS. 1 to 8 show preferred embodiments of a building rooftop construction system with improved waterproofing performance according to the present invention.

[0016] As illustrated in FIGS. 1 to 6, the building rooftop construction system with improved waterproofing performance comprises: a vertical rail (100) fixed to the upper end of the left and right rooftop railings (10); a vertical moving platform (200) that moves vertically along the vertical rail (100); a horizontal rail (300) installed on the vertical moving platform (200); a horizontal moving platform (400) that moves horizontally along the horizontal rail (300); a lifting platform (500) installed to be vertically movable on the horizontal moving platform (400); and a sprayer (600) mounted on the lower end of the lifting platform (500), which has a built-in spray pump and pattern adjustment valve capable of adjusting the spray width to a narrow or wide width, and is connected by a hose to a waterproofing agent tank loaded on the upper end of the lifting platform base. and control means (700) for controlling the vertical moving platform (200), horizontal moving platform (400), lifting platform (500), and sprayer (600);

[0017] The above vertical rail (100) includes a vertical rail base (110) that is fixed to the upper surface of a rooftop railing (10), and a vertical running projection (120) and a vertical supporting projection (130) that are formed to protrude over the entire length of the upper surface of the vertical rail base (110).

[0018] The above vertical rail (100) can be fixed to the rooftop railing (10) through a fixing bracket (140) that is fixed to the rooftop railing (10).

[0019] That is, the above fixing bracket (140) is formed in a U-shape with an open bottom and can be fixed to the rooftop railing (10) by placing it over the top of the rooftop railing (10) and tightening a plurality of fixing bolts (B1) that are fastened to a plurality of screw holes (N1) formed in the vertical parts on both sides of the rooftop railing (10), and the vertical rail (100) can be fixed to the rooftop railing (10) through the fixing bracket (140) by passing a plurality of screw rods (B2) fixed to the upper surface of the fixing bracket (140) through the vertical rail base (110) and then fastening nuts (N2) to the screw rods (B2).

[0020] In the example, the above fixing fasteners (140) are fixed one at each end of the rooftop railing (10), but the number of fixing fasteners (140) can be varied depending on the length of the rooftop railing (10).

[0021] In addition, the vertical rail (100) can be divided and formed into multiple unit vertical rails (100) according to the vertical length of the rooftop railing (10), and in this case, a fastener (140) can be installed at the connection part of the unit vertical rail (100).

[0022] The above-described vertical moving member (200) comprises a vertical moving member body (210) having a plurality of vertical shaft support pieces (211) formed on its lower surface, a vertical driving roller (220) and a vertical supporting roller (230) that are supported by the vertical shaft support pieces (211) and make rolling contact with the vertical driving protrusion (120) and the vertical supporting protrusion (130), a vertical moving motor (240) that is mounted on the upper surface of the vertical moving member body (210) and has a vertical moving motor shaft (241), a vertical moving driving gear (250) coupled to the vertical moving motor shaft (241), and a vertical moving driven gear (260) coupled to the vertical driving roller (220) and meshing with the vertical moving driving gear (250).

[0023] The vertical driving roller (220) and the vertical support roller (230) can be rotatably installed in the shaft holes (222, 232) formed in the vertical shaft support piece (211) by the roller shafts (221, 231) formed at both front and rear ends.

[0024] [Vertical movement operation]

[0025] When the vertical movement motor (240) is operated in the reverse direction according to the control of the control means (700) described later, the vertical movement motor shaft (241) and the vertical movement drive gear (250) coupled thereto rotate clockwise (when viewed from the left side), and the vertical movement driven gear (260) and the vertical driving roller (220) coupled thereto rotate counterclockwise, causing the vertical movement platform (200) to move backward by the rolling contact of the vertical driving roller (220) with the vertical driving protrusion (120), and accordingly, the horizontal movement platform (400), the lifting platform (500), and the sprayer (600) coupled directly or indirectly to the vertical movement platform (200) move backward as a whole.

[0026] Conversely, when the vertical movement motor (240) is operated in the forward direction according to the control of the control means (700) described later, the entire vertical movement platform (200), the horizontal movement platform (400), the lifting platform (500), and the sprayer (600) that are directly or indirectly connected to the vertical movement platform (200) are all moved forward in the reverse direction operation as described above.

[0027] The vertical movement distance per turn is carried out by taking into account the spray width per turn and the overlapping width between turns of the process, according to the control of the control means (700) described later.

[0028] During the vertical movement process, the vertical movement body (210) is supported by four vertical support rollers (230) on two vertical support protrusions (130), so the vertical movement is performed smoothly without shaking.

[0029] The above-mentioned horizontal rail (300) includes a horizontal rail base (310) fixed to the left and right vertical moving body (210), and a horizontal running protrusion (320) and a horizontal supporting protrusion (330) formed protruding over the entire length on the upper surface of the horizontal rail base (310).

[0030] The above fixing plate (340) can be fixed to the side of the vertical moving platform body (210) through a fixing plate (340) that is welded and fixed to both ends of the horizontal rail base (310).

[0031] The above fixing plate (340) can be connected by passing a bolt (B3) through it and fastening it to a bolt fastening hole (N3) formed on the side of the vertical moving body (210).

[0032] The above horizontal moving member (400) comprises a vertical moving member body (410) having a plurality of horizontal axle support pieces (411) formed on its lower surface, a horizontal driving roller (420) and a horizontal supporting roller (430) that are supported by the horizontal axle support pieces (411) and make rolling contact with the horizontal driving protrusion (320) and the horizontal supporting protrusion (330), a horizontal moving motor (440) that is mounted on the upper surface of the vertical moving member body (410) and has a horizontal moving motor shaft (441), a horizontal moving driving gear (450) coupled to the horizontal moving motor shaft (441), and a horizontal moving driven gear (460) coupled to the horizontal driving roller (420).

[0033] The horizontal driving roller (420) and the horizontal support roller (430) can be rotatably installed in the shaft holes (422, 432) formed in the vertical shaft support piece (411) by the roller shafts (421, 431) formed at both front and rear ends.

[0034] Here, it is preferable that the upper portions of the vertical running protrusion (120) and the vertical support protrusion (130), and the horizontal running protrusion (320) and the horizontal support protrusion (330) are formed with a semicircular cross-section, and that the vertical running roller (220) and the vertical support roller (230), and the horizontal running roller (420) and the horizontal support roller (430) use grooved rollers with semicircular grooves formed therein, so that the movement motion by the vertical running protrusion (120) and the vertical running roller (220), the horizontal running protrusion (320) and the horizontal running roller (420), and the support motion by the vertical support protrusion (130) and the vertical support roller (230), and the horizontal support protrusion (330) and the horizontal support roller (430) are smoothly performed.

[0035] [Horizontal movement operation]

[0036] When the above horizontal movement motor (440) is operated in the leftward movement direction according to the control of the control means (700) described later, the horizontal movement motor shaft (441) and the horizontal movement drive gear (450) coupled thereto rotate clockwise (when viewed from the front), and the horizontal movement driven gear (460) and the horizontal driving roller (420) coupled thereto rotate counterclockwise, so that the horizontal movement platform (400) moves to the leftward by the rolling contact of the vertical driving roller (220) with the horizontal driving protrusion (320), and accordingly, the lifting platform (500) and the sprayer (600) coupled directly or indirectly to the horizontal movement platform (400) move to the leftward as a whole.

[0037] Conversely, when the horizontal movement motor (440) is operated in the rightward movement direction according to the control of the control means (700) described later, the horizontal movement platform (400), the lifting platform (500), and the sprayer (600) are all moved to the rightward direction in the opposite direction to the leftward movement.

[0038] The horizontal movement speed is carried out by taking into account the coating speed of the process according to the control of the control means (700) described later.

[0039] During the horizontal movement process, the horizontal movement body (410) is supported by four horizontal support rollers (430) on two horizontal support protrusions (330), so the horizontal movement is performed smoothly without shaking.

[0040] The above-described lifting platform (500) comprises a lifting platform base (510) located at the lower part of the horizontal rail (300) and coupled to the horizontal moving platform body (410), a lifting plate (520) located at the lower part of the lifting platform base (510), a plurality of lifting guide rods (530) fixed to the upper surface of the lifting plate (520) and penetrating a lifting guide hole (531) formed in the lifting platform base (510), a lifting drive motor (540) mounted on the upper surface of the lifting plate (520) and having a lifting drive motor shaft (541), a lifting drive screw rod (550) coupled to the lifting drive motor shaft (541), and a lifting drive screw hole (560) formed in the lifting platform base (510) and screwed into the lifting drive screw rod (550).

[0041] The above lifting platform base (510) can be connected to the horizontal moving platform body (410) by fastening a bolt (B4) that penetrates a plurality of connecting rods (511) provided on the upper surface to a bolt fastening hole (N4) formed on the front and rear surfaces of the horizontal moving platform body (410).

[0042] [Elevator Operation]

[0043] When the above lifting drive motor (540) is operated in the upward direction, the lifting drive motor shaft (541) and the lifting drive screw rod (550) coupled thereto rotate clockwise (when viewed from the bottom), and the lifting drive screw rod (550) rises due to the screw action of the lifting drive screw rod (550) and the lifting drive screw hole (560), and the lifting drive motor (540), lifting plate (520), sprayer (600), and distance measuring device (740) which are directly or indirectly coupled to the lifting drive screw rod (550) rise.

[0044] Conversely, when the lifting drive motor (540) is operated in the downward direction, the lifting drive motor shaft (541), lifting drive screw rod (550), lifting drive motor (540), lifting plate (520), sprayer (600), and distance measuring device (740) are lowered in the opposite direction to the upward operation (see FIG. 6).

[0045] At this time, stable lifting operation is achieved through the guidance of the lifting guide rod (530) and the lifting guide ball (531).

[0046] In addition, the lifting operation is carried out to maintain the spray height according to the control of the control means (700) described later.

[0047] The above sprayer (600) has a built-in spray pump and pattern control valve capable of adjusting the spray width to a narrow width and a wide width, and is connected by a hose to a waterproofing tank loaded on the upper part of the platform base.

[0048] The above waterproofing tank (620) can be loaded onto a loading plate (621) that is connected to the top of the connecting rod (511) of the elevator platform (500).

[0049] A stirrer (not shown) can be installed in the above waterproofing tank (620) so that the mixing ratio and concentration can be maintained at a constant level without changing during the construction process.

[0050] The above sprayer (600) may have a spray pump and a spray pattern controller (not shown) built into it.

[0051] The above waterproofing tank (620) can be used separately for an oil-based primer for applying an oil-based primer film layer (L10), for an intermediate heat-insulating waterproofing agent for applying an intermediate heat-insulating waterproofing film layer (L20), and for an oil-based topcoat heat-insulating waterproofing agent for applying a topcoat heat-insulating waterproofing film layer (L30).

[0052] The above sprayer (600) may be used for oil-based primer, intermediate heat-insulating waterproofing agent, and oil-based topcoat heat-insulating waterproofing agent, but since a lot of time is required to clean it every time the waterproofing agent is changed, it is preferable to use it separately for oil-based primer, intermediate heat-insulating waterproofing agent, and oil-based topcoat heat-insulating waterproofing agent to reduce construction time.

[0053] The above control means (700) controls the vertical movement motor (240) of the vertical movement platform (200), the horizontal movement motor (440) of the horizontal movement platform (400), the lifting drive motor (540) of the lifting platform (500), the spray pump of the sprayer (600), and the pattern control valve.

[0054] The above control means (700) comprises a temperature sensor (710), a humidity sensor (720), and an anemometer (730) for measuring the temperature, humidity, and wind speed of the construction site, respectively; a distance measuring device (740) for measuring the distance from the nozzle (610) of the sprayer (600) to the rooftop floor surface (20); mixing ratio data according to temperature, humidity, and wind speed; coating process data including the mixing ratio, spray height (AH), spray speed (VA), spray width (AW), row overlap width (LW), lateral movement speed (VW), the number of coatings (AN) and drying time (DT) of the oil-based primer film layer (L10), intermediate heat-insulating waterproof film layer (L20), and topcoat heat-insulating waterproof film layer (L30); and the rotational speed per minute (RPM) of the vertical movement motor (240) and the horizontal movement motor (440), and per rotation of the vertical travel roller (220) and the horizontal travel roller (420). A memory unit (750) in which the driving distance (DL, DW) is stored, a control unit (760) that reads the mixing ratio data and the coating process from the memory unit (740) according to the measurement data of the temperature sensor (710), humidity sensor (720), wind speed meter (730), and distance measuring device (740), and controls the vertical movement motor (240), horizontal movement motor (440), lifting drive motor (540), spray pump of the sprayer (600), and pattern adjustment valve according to the coating process, a communication unit (770) that transmits the mixing ratio data read from the control unit (760), a construction start button that is displayed, the mixing ratio data received from the communication unit (770) that is displayed in the mixing ratio data display window, a coating range input window in which the vertical length (L) and horizontal width (W) of the rooftop floor surface (20) are entered, a coating range transmission button, and a coating start input button for inputting the start of coating are displayed, and in the coating range input window It includes a worker terminal (780) that transmits input data for vertical length (L) and horizontal width (W) and an application start input signal from an application start input button.

[0055] The above temperature sensor (710), humidity sensor (720), wind speed meter (730), and distance measuring device (740) may be any of the following, as long as they can measure temperature, humidity, wind speed, and distance and transmit them as digital data to the control unit (760).

[0056] The above temperature sensor (710), humidity sensor (720), and wind speed meter (730) can be installed on a loading plate (621) or a waterproofing tank (620).

[0057] The above distance measuring device (740) can be selected from a laser distance measuring device and an ultrasonic distance measuring device.

[0058] The mixing ratio and coating process stored in the memory unit (750) may be open data generated by AI or specialized proprietary data accumulated from the company's construction experience.

[0059] The above control unit (760) controls the transmission of the mixing ratio data read from the memory unit (750) through the communication unit (770) according to the measurement data of the temperature sensor (710), humidity sensor (720), and wind speed meter (730).

[0060] The dedicated application installed on the above-mentioned worker terminal (780) and the terminal's own functions can be configured to display a construction start button, a mixing ratio data display window, a coating range input window, a coating range transmission button, and a coating start input button.

[0061] The power required for the above-mentioned vertical movement motor (240), horizontal movement motor (440), lifting drive motor (540), sprayer (600), and the temperature sensor (710), humidity sensor (720), wind speed sensor (730), distance measuring device (740), memory unit (750), control unit (760), and communication unit (770) of the control means (700) may use commercial power from the construction building or battery power, and specific illustration and description thereof are omitted.

[0062] FIG. 7 is a flowchart illustrating a building rooftop construction system with improved waterproofing performance according to the present invention.

[0063] As illustrated in FIG. 7, the rooftop construction system for a building with improved waterproofing performance according to the present embodiment comprises: a rooftop floor surface preparation step (S1) for cleaning the rooftop floor surface (20) and repairing cracks or lifted parts; a step (S2) for forming an oil-based primer film layer (L10) by applying an oil-based primer to the rooftop floor surface (20) where the rooftop floor surface preparation step (S1) has been performed and then drying it; a step (S3) for forming an intermediate heat-insulating waterproofing film layer (L20) by applying an intermediate heat-insulating waterproofing agent on the oil-based primer film layer (L10) and drying it; and a step (S4) for forming a top-layer heat-insulating waterproofing film layer (L30) by applying a top-layer heat-insulating waterproofing agent on the intermediate heat-insulating waterproofing film layer (L20).

[0064] These steps are based on the aforementioned registered patent No. 10-10-2755098.

[0065] The above roof surface preparation step (S1) is an important step that serves as the basic principle for waterproofing, heat insulation, and thermal insulation work. It includes removing dust, foreign matter, and existing coatings by strongly spraying high-pressure water onto the roof surface (20), removing lifted parts or cracked parts using a hammer, chisel, grinder, etc., and roughening the surface to increase adhesion. If necessary, existing coatings can be effectively removed using chemical agents for coating removal. Additionally, if there are cracks on the roof surface, the above roof surface preparation step (S1) may repair the cracked parts with silicone or urethane after V-cutting or U-cutting. Furthermore, the above roof surface preparation step (S1) may include completely removing lifted parts, or if necessary, flattening the surface using cement mortar, etc., and completely drying the substrate surface by using a dryer or natural drying.

[0066] The step of forming an oil-based primer film layer (S2) includes applying and drying the

[0021] oil-based primer of the same composition as below to a prepared rooftop surface 3 to 5 times.

[0067] ingredient Content (weight%) note Polyester 10 ~ 30 Improved adhesion silica 10 ~ 20 Surface roughness control Subway 5 ~ 10 Improved durability zinc phosphate 0.1 ~ 0.2 Improved adhesion Isohexadecane 5 ~ 10 Solid dispersion Sodium acrylate 15 ~ 20 Strengthening the bond with the lower limb surface Polluene (or eco-friendly solvent) remain component dispersion

[0068] In this step, an oil-based primer film layer can be formed using an oil-based primer composed of a component ratio adjusted considering the rooftop floor surface, i.e., the substrate and the intermediate heat-insulating waterproofing film layer.

[0069] For example, if the rooftop surface, i.e., the substrate, is highly absorbent, the silica content can be relatively increased to control the absorption rate and enhance adhesion. Additionally, if the substrate is excessively smooth, the sodium acrylate content can be relatively increased to improve adhesion. Furthermore, if weather resistance is required, the relative content of iron oxide can be increased or titanium compounds can be added. Various additives can be added to impart special functions such as antibacterial, waterproofing, and fire resistance. Using eco-friendly solvents, such as vegetable oil, instead of toluene, or using a mixture thereof, may be considered.

[0070] The step (S3) of forming an intermediate heat-insulating waterproof coating layer involves applying and drying an intermediate heat-insulating waterproofing agent containing 40 to 52 wt% of high-elasticity emulsion resin, 5 to 15 wt% of aluminum flakes, 0.1 to 0.5 wt% of silver nanoparticles, 15 to 25 wt% of diatomaceous earth, 2 to 4 wt% of thickener, 0.5 to 3 wt% of dispersant, 0.5 to 2 wt% of defoamer, 0.5 to 2 wt% of preservative, 1 to 3 wt% of surfactant, 1 to 5 wt% of silica, 5 to 10 wt% of thermal insulation enhancer, and the remainder being water, onto the oil-based primer coating layer (L20) to form an intermediate heat-insulating waterproof coating layer. The main functions of the components constituting the intermediate heat-insulating waterproof coating layer are as shown in [Table 2] below.

[0071] ingredient Content (weight%) function High-elasticity emulsion resin 40 ~ 52 Film formation, flexibility aluminum flakes 5 ~ 15 Heat insulation, improved appearance nanoparticles 0.1 ~ 0.5 Heat insulation, antibacterial, durability Diatomite 15 ~ 25 insulation, moisture absorption silica 3 ~ 7 Thermal insulation, dispersion Thickener 2 ~ 4 Viscosity control Antifoamer 0.5 ~ 2 Anti-bubble antiseptic 0.5 ~ 2 Preservatives surfactants 1 ~ 3 Dispersion stability Insulation enhancer 5 ~ 10 Thermal insulation water remain menstruum

[0072] Among the above components, silica can significantly alter coating properties depending on particle size; therefore, particle size must be controlled according to the desired properties. Furthermore, by adjusting the silica content, it is possible to control the viscosity, density, and thermal insulation of the coating. Aluminum flakes suppress the rise in surface temperature by reflecting sunlight, while silver nanoparticles provide a heat reflection effect along with UV blocking for the coating. Diatomaceous earth enhances thermal insulation and reduces condensation by forming numerous micro-pores that contain a large amount of air.

[0073] An experiment was conducted to measure temperature changes by forming a coating layer of the same thickness with a waterproofing material having varying component ratios of aluminum flakes, nanoparticles, and diatomaceous earth as shown below, and irradiating the coating layer with infrared rays under conditions similar to sunlight for 30 minutes.

[0074] For the comparative example, the same test was conducted by forming a coating layer of the same thickness with a general water-based insulating and waterproofing agent containing emulsion resin, titanium dioxide, and calcium carbonate. The composition ratios of the remaining components, such as the high-elasticity emulsion resin, were all tested under the same conditions.

[0075] Examples 1, 2, and 3 comprise a high-elasticity emulsion resin, aluminum flakes, silver nanoparticles, diatomaceous earth, a thickener, a dispersant, an antifoaming agent, a preservative, a surfactant, silica, a thermal insulation enhancer, and the remainder being water, wherein Example 1 comprises 8 wt% aluminum flakes, 0.3 wt% nanoparticles, and 22 wt% diatomaceous earth, Example 2 comprises 10 wt% aluminum flakes, 0.3 wt% nanoparticles, and 20 wt% diatomaceous earth, and Example 3 comprises 13 wt% aluminum flakes, 0.3 wt% nanoparticles, and 17 wt% diatomaceous earth.

[0076] Example 1 Example 2 Example 3 In comparison Temperature before infrared irradiation 25℃ 25℃ 25℃ 25℃ Temperature after infrared irradiation 41.5℃ 39.2℃ 38.1℃ 50.2℃ Change in temperature 16.5℃ 14.2℃ 13.1℃ 25.2℃

[0077] The step (S4) of forming a top layer of heat-insulating waterproof coating includes applying a top layer of heat-insulating waterproofing agent onto an intermediate layer of heat-insulating waterproofing agent and then curing it. As the top layer of heat-insulating waterproofing agent, a commercially available two-component oil-based waterproofing agent may be applied as is, or a agent that secures strong antifouling properties by using silicone rubber liquid and dichlorodimethylsilane may be used. For example, a waterproofing agent comprising acrylic resin hollow beads, a curing agent, a softening agent, a preservative, and other additives and a solvent may be used as the top layer of heat-insulating waterproofing agent. Alternatively, the step (S4) of forming a top layer of heat-insulating waterproofing can be achieved, for example, by applying a liquid polyurethane resin.

[0078] According to one embodiment of the present invention, a high-efficiency rooftop heat-insulating waterproof coating system applied to a rooftop floor surface includes, as shown in FIG. 8, an oil-based primer coating layer (L10) formed by applying an oil-based primer to a rooftop floor surface and drying it, an intermediate heat-insulating waterproof coating layer (L20) formed by applying an intermediate heat-insulating waterproofing agent on the oil-based primer coating layer (L10) and drying it, and a topcoat heat-insulating waterproof coating layer (L30) formed by applying an oil-based topcoat heat-insulating waterproofing agent on the intermediate heat-insulating waterproof coating layer (L20).

[0079] The above oil-based primer may comprise 10 to 30 wt% polyester, 10 to 20 wt% silica, 5 to 10 wt% iron oxide, 0.1 to 0.2 wt% zinc phosphate, 5 to 10 wt% isohexadecane, 15 to 20 wt% sodium acrylate, and the remainder being polyuene (or an eco-friendly solvent).

[0080] The above intermediate heat-insulating waterproofing agent may comprise 40 to 52 wt% of high-elasticity emulsion resin, 5 to 15 wt% of aluminum flakes, 0.1 to 0.5 wt% of silver nanoparticles, 15 to 25 wt% of diatomaceous earth, 2 to 4 wt% of thickener, 0.5 to 3 wt% of dispersant, 0.5 to 2 wt% of defoamer, 0.5 to 2 wt% of preservative, 1 to 3 wt% of surfactant, 1 to 5 wt% of silica, 5 to 10 wt% of thermal insulation enhancer, and the remainder being water.

[0081] The above-mentioned topcoat heat-insulating waterproofing agent may be a commercially available two-component oil-based waterproofing agent applied as is, or one that secures strong antifouling properties by using silicone rubber liquid and dichlorodimethylsilane may be used. For example, a waterproofing agent comprising acrylic resin hollow beads, a curing agent, a softening agent, a preservative, and other additives and a solvent may be used as the topcoat heat-insulating waterproofing agent. Alternatively, the step (S4) of forming the topcoat heat-insulating waterproofing film layer may be achieved, for example, by applying a liquid polyurethane resin alone.

[0082] The following describes the process of constructing a building rooftop with improved waterproofing performance using the building rooftop construction system with improved waterproofing performance described above.

[0083] When the construction start button displayed on the above worker terminal (780) is touched, a construction start signal is transmitted.

[0084] The communication unit (770) receives a construction start signal and transmits it to the control unit (760).

[0085] The above control unit (760) controls the temperature sensor (710), humidity sensor (720), wind speed meter (730), and distance measuring device (740) to operate according to the construction start signal.

[0086] The above temperature sensor (710), humidity sensor (720), and wind speed meter (730) each measure the temperature, humidity, and wind speed of the construction site and output temperature measurement data, humidity measurement data, and wind speed measurement data.

[0087] The above temperature measurement data, humidity measurement data, and wind speed measurement data are transmitted to the control unit (760), and the control unit (760) reads the mixing ratio data of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent from the memory unit (750) according to the temperature measurement data, humidity measurement data, and wind speed measurement data, and transmits it through the communication unit (770).

[0088] Here, when the worker terminal (780) executes a dedicated application, a received mixing ratio display window, a coating range input window for inputting a coating range, a coating range data transmission button for transmitting the coating range data entered in the coating range input window, and a coating start button for transmitting a coating start signal are displayed.

[0089] The mixing ratio data display window of the above-mentioned worker terminal (780) displays the received mixing ratio data of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent.

[0090] According to the mixing ratio data of the oil-based primer, intermediate heat-insulating waterproofing agent, and top-coat heat-insulating waterproofing agent displayed on the above-mentioned worker terminal (780), an oil-based primer for forming an oil-based primer film layer (L10), an intermediate heat-insulating waterproofing agent for forming an intermediate heat-insulating waterproofing film layer (L20), and a top-coat heat-insulating waterproofing agent for forming a top-coat heat-insulating waterproofing film layer (L30) can be prepared.

[0091] Therefore, construction using an oil-based primer, an intermediate heat-insulating waterproofing agent, and a topcoat heat-insulating waterproofing agent becomes possible in response to construction site environmental variables including temperature, humidity, and wind speed.

[0092] Additionally, while applying the oil-based primer film layer (L10), intermediate heat-insulating waterproof film layer (L20), and top heat-insulating waterproof film layer (L30), if environmental variables at the construction site, including temperature, humidity, and wind speed, change rapidly to the point where the oil-based primer, intermediate heat-insulating waterproofing agent, and top heat-insulating waterproofing agent prepared and injected cannot satisfy the application conditions, the application work can be stopped, and the oil-based primer, intermediate heat-insulating waterproofing agent, and top heat-insulating waterproofing agent are newly prepared and injected into the waterproofing agent tank (620), and the application work can be resumed.

[0093] The prepared oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent are injected into a waterproofing agent tank (620) for each step of forming an oil-based primer film layer (L10) (S2), forming an intermediate heat-insulating waterproofing film layer (L20) (S3), and forming a topcoat heat-insulating waterproofing film layer (L30) (S3), loaded onto the loading plate (621), and the waterproofing agent tank (620) and the sprayer (600) are connected by a hose (630).

[0094] When the application start button is touched on the above-mentioned worker terminal (780), an application start signal is transmitted, received by the communication unit (770), and transmitted to the control unit (760).

[0095] The above control unit (760) controls the lifting drive motor (540) according to the distance measurement data transmitted from the distance measuring device (740) and the spray height (AH) read from the memory unit (750) to raise and lower the lifting platform (500) and the sprayer (600) so that the spray height of the sprayer (600) is maintained at the spray height (AH).

[0096] The control unit (760) controls the horizontal movement motor (440) and the sprayer (600) according to the application start signal so that the horizontal movement platform (400), the lifting platform (500), and the sprayer (600) move in the horizontal direction, and sprays an oil-based primer, an intermediate heat-insulating waterproofing agent, and a top-coat heat-insulating waterproofing agent from the sprayer (600) to form an oil-based primer film layer (L10), an intermediate heat-insulating waterproofing film layer (L20), and a top-coat heat-insulating waterproofing film layer (L30).

[0097] At this time, the horizontal movement is made of the horizontal movement speed (VW) read by the control unit (760) from the memory unit (750), and the spray width is made of the spray width (AW) read by the control unit (760) from the memory unit (750).

[0098] The control unit (760) calculates the rotational speed (RPM) of the horizontal movement motor (440) read from the memory unit (750) and the travel distance (DW) per revolution of the horizontal travel roller (420) to determine the time when one row of coating is completed, and stops the horizontal movement motor (440) and the sprayer (600) so that one row of coating is finished.

[0099] The control unit (760) operates the vertical movement motor (240) according to the spray width (AW) and row overlap width (LW) read from the memory unit (750) so that the vertical movement platform (200), horizontal rail (300), horizontal movement platform (400), lifting platform (500), and sprayer (600) move in the vertical direction so that the sprayer (600) is positioned for 2-row application.

[0100] Afterwards, the control unit (760) controls the horizontal movement, spraying, and vertical movement processes to be repeated.

[0101] When the vertical length (L) of the rooftop floor surface (20) is divided by the sum of the spray width (AW) and the row overlap width (LW), and n is used, the horizontal movement is performed n times and the vertical movement is performed n-1 times, at which point one application is completed.

[0102] When the application process of the oil-based primer, intermediate heat-insulating waterproofing agent, and top heat-insulating waterproofing agent is carried out for each application cycle (AN), the formation of the oil-based primer film layer (L10), intermediate heat-insulating waterproofing film layer (L20), and top heat-insulating waterproofing film layer (L30) is completed.

[0103] When the formation of the oil-based primer film layer (L10), the intermediate heat-insulating waterproof film layer (L20), and the top heat-insulating waterproof film layer (L30) is completed, the control unit (760) controls the vertical movement motor (240), the horizontal movement motor (440), the lifting drive motor (540), and the sprayer (600) to stop so that the construction is completed.

[0104] As described above, this description has been explained with specific details such as specific components, limited embodiments, and drawings; however, this is provided merely to aid in a more comprehensive understanding of the invention, and the invention is not limited to the above embodiments. A person skilled in the art can make various modifications and variations from this description.

[0105] Therefore, the scope of the present invention should not be limited to the described embodiments, and all things equivalent to or having equivalent variations to the claims set forth below, as well as the claims set forth below, shall be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0106] 10 : Rooftop railing 20 : Rooftop floor surface 100 : Vertical rail 200 : Horizontal moving platform 300 : Horizontal rail 400 : Horizontal moving platform 500 : Platform 600 : Sprayer 700 : Control means 710 : Temperature sensor 720: Humidity sensor 730: Anemometer 740: Distance measuring device 750: Memory unit 760: Control unit 770: Communication unit 780 : Worker terminal

Claims

Claim 1 A building rooftop construction system with improved waterproofing performance comprising: a rooftop floor surface preparation step of cleaning the rooftop floor surface and repairing cracks or lifted parts; a step of forming an oil-based primer film layer by applying an oil-based primer to the rooftop floor surface where the rooftop floor surface preparation step has been performed and drying it; a step of forming an intermediate heat-insulating waterproofing film layer by applying an intermediate heat-insulating waterproofing agent on the oil-based primer film layer and drying it; and a step of forming a top-coat heat-insulating waterproofing film layer by applying a top-coat heat-insulating waterproofing agent on the intermediate heat-insulating waterproofing film layer; wherein the system comprises a vertical rail including a vertical rail base that is fixedly seated on the upper surface of a rooftop railing, and a vertical running protrusion and a vertical supporting protrusion formed to protrude over the entire length of the upper surface of the vertical rail base. A vertical moving platform comprising: a main body having a plurality of vertical bearing plates formed on its lower surface; a vertical driving roller and a vertical supporting roller supported by the vertical bearing plates and making rolling contact with the vertical driving protrusion and the vertical supporting protrusion; a vertical moving motor mounted on the upper surface of the main body of the vertical moving platform and having a vertical moving motor shaft; a vertical moving driving gear coupled to the vertical moving motor shaft; and a vertical moving driven gear coupled to the vertical driving roller and meshing with the vertical moving driving gear; a horizontal rail comprising a horizontal rail base fixed to the main bodies of the left and right vertical moving platforms, and a horizontal driving protrusion and a horizontal supporting protrusion formed protruding over the entire length of the upper surface of the horizontal rail base; A vertical moving platform body having a plurality of horizontal axle support pieces formed on its lower surface, a horizontal driving roller and a horizontal supporting roller supported by the horizontal axle support pieces and making rolling contact with the horizontal driving protrusion and the horizontal supporting protrusion, a horizontal moving motor mounted on the upper surface of the vertical moving platform body and having a horizontal moving motor shaft, a horizontal moving drive gear coupled to the horizontal moving motor shaft, and a horizontal moving driven gear coupled to the horizontal driving roller; a lifting platform base located below the horizontal rail and coupled to the horizontal moving platform body, a lifting plate located below the lifting platform base, andA lifting platform comprising a plurality of lifting guide rods fixed to the upper surface of the lifting plate and penetrating a lifting guide hole formed in the lifting platform base, a lifting drive motor mounted on the upper surface of the lifting plate and having a lifting drive motor shaft, a lifting drive screw rod coupled to the lifting drive motor shaft, and a lifting drive screw hole formed in the lifting platform base and screwed into the lifting drive screw rod; a sprayer having a built-in spray pump capable of adjusting the spray width to a narrow width and a pattern adjustment valve, and connected by a hose to a waterproofing agent tank loaded on the upper part of the lifting platform base; A temperature sensor, humidity sensor, anemometer, and distance measuring device that output temperature, humidity, wind speed, and distance measurement data for each construction site; mixing ratio data according to temperature, humidity, and wind speed; application process data including spray height, spray speed, spray width, row overlap width, lateral movement speed, number of applications and drying time of oil-based primer film layer, intermediate heat-insulating waterproof film layer, and topcoat heat-insulating waterproof film layer; a memory unit that stores the revolutions per minute of the vertical movement motor and horizontal movement motor, and the travel distance per revolution of the vertical travel roller and horizontal travel roller; a control unit that reads the mixing ratio data and application process from the memory unit according to the temperature, humidity, wind speed, and distance measurement data at the construction site to output the mixing ratio, and controls the vertical movement motor, horizontal movement motor, lifting drive motor, spray pump of the sprayer, and pattern adjustment valve according to the application process; a communication unit that transmits and receives data and signals; and a device that transmits and receives data and signals to and from the communication unit. Control means including a worker terminal; wherein when a construction start button displayed on the worker terminal is touched, a construction start signal is transmitted, the communication unit receives the construction start signal and transmits it to the control unit, the control unit controls the operation of a temperature sensor, a humidity sensor, an anemometer, and a distance measuring device according to the construction start signal, and the temperature sensor, humidity sensor, and anemometer each measure the temperature, humidity, and wind speed of the construction site and output temperature measurement data, humidity measurement data, and wind speed measurement data, and the control unit outputs temperature measurement data, humidity measurement data,Upon receiving wind speed measurement data, the mixing ratio is read from the memory unit based on temperature, humidity, wind speed, and distance measurement data and transmitted via the communication unit; the operator terminal receives the mixing ratio of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent and displays it on the mixing ratio display window; the vertical length and horizontal width of the rooftop floor surface are input into the application range display window shown on the operator terminal; when the application range transmission button is touched, the input vertical length and horizontal width data are transmitted; when the application start button is touched, an application start signal is transmitted; the communication unit receives the vertical length and horizontal width data and the application start signal and transmits them to the control unit; the control unit controls the lifting drive motor according to the distance measurement data transmitted from the distance measuring device and the spray height read from the memory unit to raise and lower the lifting platform and the sprayer so that the sprayer's spray height becomes the spray height; and the control unit controls the horizontal movement motor and the sprayer according to the received application start signal so that the horizontal movement platform, lifting platform, and sprayer move horizontally at a horizontal movement speed. It moves, and according to the stages, the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent are sprayed from the sprayer to form the oil-based primer film layer, the intermediate heat-insulating waterproofing film layer, and the topcoat heat-insulating waterproofing film layer; the control unit calculates the revolutions per minute of the horizontal movement motor and the travel distance per revolution of the horizontal travel roller read from the memory unit to determine the completion time of the first row application and stops the horizontal movement motor and the sprayer; the control unit activates the vertical movement motor according to the spray width and row overlap width read from the memory unit, causing the vertical movement platform, horizontal rail, horizontal movement platform, elevator, and sprayer to move in the vertical direction to the position for the second row application; and when the value obtained by dividing the vertical length of the rooftop floor surface by the sum of the spray width and row overlap width is n, the horizontal movement proceeds n times and the vertical movement proceeds n-1 times to complete one application, and the application process of the oil-based primer, intermediate heat-insulating waterproofing agent, and topcoat heat-insulating waterproofing agent is each As it proceeds with the number of applications, the oil-based primer film layer (L10),A building rooftop construction system with improved waterproofing performance, characterized in that the formation of an intermediate heat-insulating waterproof coating layer (L20) and a top heat-insulating waterproof coating layer (L30) is completed, and the control unit controls the vertical movement motor, horizontal movement motor, lifting drive motor, and sprayer to stop, thereby terminating the construction. Claim 2 delete

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