CN115584837A - A building indoor overhead thermal insulation system and its construction method - Google Patents

Abstract

The invention discloses a building indoor overhead thermal insulation system and a construction method thereof, belonging to the technical field of building construction. The building indoor overhead thermal insulation system includes a ground thermal insulation unit and a wall thermal insulation unit connected with the ground thermal insulation unit. An overhead board, an overhead layer is formed between the first overhead board and the ground, which is used to provide layout space for the main pipeline of floor heating, water pipes and electric pipes. The axis lines are collinear, the second overhead board is laid on the supporter 2, and the floor heating insulation board is installed between the second and first overhead boards. The floor heating insulation board is embedded with floor heating pipes, and the second overhead board is laid with decorative floor. The wall thermal insulation unit of the present invention is connected with the ground thermal insulation unit, which weakens the heat absorption of the building body and improves the thermal insulation performance of the thermal insulation system.

Description

A building indoor overhead thermal insulation system and its construction method

technical field

The invention belongs to the technical field of building construction, in particular to a building indoor overhead thermal insulation system and a construction method thereof.

Background technique

In recent years, interior decoration has gradually taken into account both decoration and functionality. In terms of thermal insulation, the thermal insulation layer covers the entire interior of the building, and has a good thermal insulation effect on the ground and walls. At present, the prefabricated interior decoration abandons the traditional cement mortar wet work, and mostly adopts overhead and heated floor systems as the mainstream product direction of high-standard residential buildings, and at the same time conforms to my country's top-level design of residential industrialization for CSI (China's separation technology of pipelines and main structures) .

Due to the natural adaptability of the overhead module and the floor heating function, the two are often integrated into the design. With the rapid development of prefabricated interior decoration, the development of various overhead and thermal insulation system products is not balanced, resulting in uneven quality of overhead and thermal insulation system products. uneven.

As far as the existing technology is concerned, the traditional wall insulation usually lays the insulation layer outdoors, resulting in discontinuity between the ground insulation and the wall insulation, and the serious heat absorption of the building body, resulting in a large loss of heating supply, which reflects the insulation of the existing insulation system. Poor performance.

The traditional overhead and thermal insulation system constructs the laying space of water and electricity pipelines through the supporting feet with a relatively simple structure. The contact between the supporting feet and the ground generally adopts a circular rubber pad with a diameter of 10mm for transition, which plays the role of sound insulation and noise reduction. However, after the decoration is completed, some large electrical appliances (pianos, treadmills, dancing mats) and solid wood furniture will be added to the indoor floor, which will generate a large concentrated load or rolling load on the ground, which will easily cause the ground to collapse.

Among them, the traditional overhead modules are mostly made of cement-based materials. The boards are thick and heavy. Not only are they difficult to transport vertically, they are also high-energy-consuming products and have poor sound insulation. The overhead module made of concrete, although it improves the efficiency of installing the overhead module and the coiling efficiency of the floor heating pipe, but the lack of insulation measures directly leads to rapid heat loss, poor insulation performance, and the average downward heat dissipation is greater than 25%. .

In consideration of saving weight and materials, and because cement products need to be separated from the mold process in the manufacturing process, complex structures of pores, channels, and grooves are set on the mold, and the surface flatness of the finished overhead module made with the mold is poor. , It is not easy to lay the decorative ground on the surface.

Contents of the invention

Purpose of the invention: To provide a building indoor overhead thermal insulation system and its construction method to solve the above-mentioned problems existing in the prior art.

Technical solution: An indoor overhead thermal insulation system for a building, including a ground thermal insulation unit and a wall thermal insulation unit connected to the ground thermal insulation unit, wherein the ground thermal insulation unit includes a supporter 1, and several supporters 1 are evenly distributed in the building On the ground of the structure, a first overhead board is laid on the supporter one, and an overhead layer is formed between the first overhead board and the ground, which is used to provide layout space for the main pipeline of floor heating, water pipes and electric pipes. A supporter 2 is arranged on an elevated plate, the axes of the supporter 2 and the supporter 1 are collinear, and a second aerial plate is laid on the supporter 2, and the gap between the second aerial plate and the first aerial plate is A floor heating insulation board is provided, and a floor heating pipe is embedded in the floor heating insulation board, and a decorative floor is laid on the second overhead board.

Further, the wall heat preservation unit includes a transverse keel fixed on the building structure wall by means of an expansion plug, and a built-in skirting line is installed on the transverse keel close to the ground heat preservation unit, and the built-in skirting The line is in contact with the decorative floor, the horizontal keel is provided with an I-shaped strip, the self-decorated wall panel is installed on the I-shaped strip, and a wall is arranged between the self-decorated wall panel and the built-in skirting line and the wall. Insulation.

Further, the supporter 1 and the supporter 2 have the same structure and are respectively used for leveling the first overhead board and the second overhead board. The supporter 1 includes a fixed seat and a rotating table, and the fixed seat and the rotating table The lifting platform is screwed, and the end surface of the rotating lifting platform is evenly provided with a number of structural holes, and the middle part of the rotating lifting platform is provided with an adjustment hole matching the adjustment tool.

Further, the floor heating insulation board is provided with a heat conduction layer groove for embedded floor heating pipes, and the floor heating insulation board is provided with a relief channel for filling the supporter 2, and the heat conduction layer groove and the relief There is no intersection between the through grooves, and the aluminum thermal radiation film is laid on the floor heating insulation board.

Further, the first overhead plate and the second overhead plate are respectively provided with a leveling hole 1 and a leveling hole 2, and the leveling hole 1 and the leveling hole 2 are matched with the adjustment holes on the rotating platform, and the Make way for the adjustment tool for adjusting supporter one and supporter two.

Further, the first overhead board, the second overhead board and the self-decorating wallboard are all asbestos-free calcium silicate boards.

A construction method for a building indoor overhead thermal insulation system, comprising the following steps,

Step 1: Arrangement of water pipes, electric pipes and floor heating main pipes; pipe routing according to indoor water, electricity, heating needs and water, electricity, and heating interfaces;

Step 2: Arrange supporters and level them together; avoid all water pipes, electric pipes and floor heating main pipes, evenly distribute several supporters on the ground of the building structure, fix supporter 1 through connectors, and wire according to the level Adjust the rotary platform to ensure that the rotary platforms of several supporters are in the same plane;

Step 3: Lay the first overhead board; Lay the first overhead board on the spin-up platform on the supporter 1, and connect the first overhead board and the spin-up platform through fasteners, and the fasteners and the spin-up platform are set The structural hole fit;

Step 4: Lay the floor heating insulation board; lay the floor heating insulation board on the first overhead board, and insert the floor heating pipe and supporter into the floor heating insulation board;

Step 5: Adjust the supporter 2 and lay the second overhead board; adjust the spin-up platform according to the level gauge to ensure that the spin-up platforms of the supporter 2 are in the same plane, and then lay on the spin-up platform of the supporter 2 second overhead plate, and connected by fasteners;

Step 6: Lay the decorative floor;

Step 7: Constructing the wall insulation chamber; constructing the wall insulation chamber includes the following steps,

Step 71: installing several transverse keels on the indoor wall of the building structure through expansion plugs;

Step 72: Install the built-in skirting line on the transverse keel close to the decorative floor, and make the built-in skirting line closely contact with the decorative floor;

Step 73: Install the I-shaped strip on the horizontal keel;

Step 74: Install the self-decorating wall panel on the I-strip, the gap between the self-decorating wall panel and the built-in baseboard and the wall is the thermal insulation cavity;

Step 8: Fill the wall insulation layer; open a filling hole on the self-decorating wall panel, send the insulation foaming agent from the filling hole to the insulation cavity, and form the wall insulation layer after the insulation foaming agent cools.

Further, when arranging supporter one in step 2, the maximum inscribed circle diameter of the supporting end surface of said supporter one is 90 mm, and the distance between adjacent supporter ones is not greater than 300 mm.

Further, step 4 also includes the following steps in the process of laying the floor heating insulation board:

Step 41: Set up a pass-through groove on the floor heating insulation board; use the method of cross setting to gather the intersection point at the center of the leveling hole 1, place the floor heating insulation board on the first overhead board, and rub the floor heating insulation board to the The point of intersection is exactly the center of circle of opening the channel for giving way.

Further, in step 6, when laying the decorative floor,

If the decorative floor is a floor, the adjacent floors are plugged in through their own manifolds;

If the decorative floor is floor tiles, an I-shaped plug-in aluminum material is arranged between adjacent floor tiles, and the floor tiles and the I-shaped plug-in aluminum material are bonded by an adhesive.

Beneficial effect:

The wall thermal insulation unit of the present invention is arranged indoors and connected with the ground thermal insulation unit to form a continuous thermal insulation system, which weakens the heat absorption of the building body, reduces the loss of heating supply, and improves the thermal insulation performance of the thermal insulation system.

In the present invention, the traditional anchor bolts (circular rubber pads with a contact diameter of 10 mm to the ground) are replaced with supporters with a maximum inscribed circle diameter of 90 mm on the support end surface, and the upper and lower double layers are arranged in a corresponding manner, and the whole is elevated And the bearing capacity of the thermal insulation system is increased by 3 times, so that no matter what kind of large furniture and household appliances are added after the decoration is delivered, it can meet the overall load-bearing requirements of the raised ground.

The ground heat preservation unit of the present invention is provided with supporter 1, first overhead board, floor heating insulation board (including supporter 2), second overhead board and decorative floor sequentially upwards from the structural ground, and the first overhead board is elevated by supporter 1, It not only provides an installation cavity for electric pipes and water pipes, but also forms an overhead layer, which can bring obvious benefits to the sound insulation and heat preservation effect of the ground insulation unit; the first overhead board plays a good supporting role for other structural products superimposed on it , the floor heating insulation board provides a heat conduction layer groove for the coiling of the floor heating insulation board. The uniform upward conduction makes the downward heat dissipation less than 10%, which saves a lot of heat loss compared with the concrete floor heating module.

The second overhead board is laid on the floor heating insulation board and can be used as a balance layer before the installation of the decorative floor. At the same time, when the decorative floor is replaced and removed, the floor heating pipe and the floor heating insulation board will not be damaged due to misoperation, reducing water leakage and other hidden dangers. It also avoids the problem of poor surface flatness of the module caused by traditional cement products in the manufacturing process, which makes it difficult to lay decorative floors.

Description of drawings

Fig. 1 is the structural representation of the heat preservation system in the present invention.

Fig. 2 is an enlarged view of Fig. 1 in the present invention.

Fig. 3 is a schematic structural view of the ground heat preservation unit in the present invention.

Fig. 4 is a side sectional view of the ground heat preservation unit in the present invention.

Fig. 5 is a schematic structural view of supporter 1 in the present invention.

Fig. 6 is a flowchart of the construction method in the present invention.

Reference numerals are: 1. Ground insulation unit; 10. Floor heating main pipe; 11. Supporter 1; 111. Fixing seat; 112. Rotary lift platform; 113. Structural hole; 12. First overhead board; 121. Leveling Hole 1; 13. Floor heating insulation board; 131. Aluminum thermal radiation film; 14. Second overhead board; 141. Leveling hole 2; 15. Decorative floor; 16. Floor heating pipe; 17. Water pipe; 18. Electric pipe; 19. Supporter 2; 2. Wall insulation unit; 21. Horizontal keel; 22. Expansion plug; 23. Wall insulation layer; 24. Vertical I-strip; 25. Self-decorating wallboard; Wire.

detailed description

In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

Embodiment one

As shown in FIG. 1 , an overhead thermal insulation system in a building includes a ground thermal insulation unit 1 and a wall thermal insulation unit 2 connected to the ground thermal insulation unit 1 . The wall thermal insulation unit 2 is arranged indoors and connected with the ground thermal insulation unit 1 to form a continuous thermal insulation system, which weakens the heat absorption of the building body, reduces the loss of heating supply, and improves the thermal insulation performance of the thermal insulation system.

As shown in Figures 3-4, the ground insulation unit 1 includes a supporter-11, a number of supporters-11 are evenly distributed on the ground of the building structure, and the supporter-11 is laid with a first overhead board 12, the first overhead board 12 and the ground form an overhead layer, which is used to provide layout space for the floor heating main pipeline 10, the water pipe 17 and the electric pipe 18. The first overhead board 12 is provided with a supporter two 19, the axis of the supporter two 19 and the supporter one 11 is collinear, the second overhead board 14 is laid on the supporter two 19, the second overhead board 14 and the first overhead board Floor heating insulation board 13 is arranged between 12, and floor heating insulation board 13 is embedded with floor heating pipe 16. A decorative floor 15 is laid on the second elevated board 14 .

The first overhead board 12 and the second overhead board 14 separate the ground insulation unit 1 into a lower overhead layer, a middle insulation layer and an upper decoration layer. Each layer area has different functions and has little mutual influence; if the owner wants to change The style of the interior decoration floor 15 or when the decoration floor 15 is overhauled, the first overhead board 12 plays the role of separating the upper decoration layer and protecting the middle insulation layer, effectively reducing the maintenance and renovation cost and time of the owner; , only need to adjust the part of the middle insulation layer and the upper decoration layer to complete the maintenance; if the lower overhead layer fails, the space of the overhead layer is conducive to the dragging of the water pipe 17 or the electric pipe 18, which is convenient for line maintenance, and the overhead layer is kept on the ground for heat preservation Unit 1 exerts the effect of sound insulation and heat preservation, and the benefits are obvious.

As shown in Figure 5, the supporter one 11 and the second supporter 19 have the same structure, and are respectively used for leveling the first elevated plate 12 and the second elevated plate 14. The supporter one 11 includes a fixed seat 111 and a rotary table 112, The fixing seat 111 is threadedly connected with the rotary table 112, and the end surface of the rotary table 112 is uniformly provided with a plurality of structural holes 113, and the middle part of the rotary table 112 is provided with an adjustment hole matching with an adjustment tool. The traditional anchor bolts are replaced with supporters with a maximum inscribed circle diameter of 90mm on the support end surface, and the upper and lower layers are arranged in correspondence with each other, which greatly improves the bearing capacity of the overhead thermal insulation system, so that no matter how much it is added after the decoration is delivered Large pieces of furniture and home appliances can meet the overall load-bearing requirements of the raised ground.

As shown in Figure 2, the wall insulation unit 2 includes a transverse keel 21 fixed on the wall of the building structure by means of an expansion plug 22, and a built-in skirting line 26 is installed on the transverse keel 21 close to the ground insulation unit 1. Type skirting line 26 is in contact with decorative floor 15, and horizontal keel 21 is provided with I-shaped strip 24, and self-decorating wallboard 25 is installed on I-shaped strip 24, between self-decorating wallboard 25 and built-in type skirting line 26 and the body of wall. A wall insulation layer 23 is provided between them. The lower end of the built-in skirting line 26 is in contact with the decorative floor 15, and the upper part is in contact with the self-decorating wallboard 25. The built-in skirting line 26 makes the wall insulation unit 2 and the ground insulation unit 1 smoothly connected, which greatly improves the Insulation capacity of the insulation system.

As shown in Figures 3-4, the floor heating insulation board 13 is provided with a heat conduction layer groove for embedding the floor heating pipe 16, and the floor heating insulation board 13 is provided with a relief channel for filling the supporter 2 19, and the heat conduction layer groove There is no intersection between the groove and the step-off groove, and an aluminum thermal radiation film 131 is laid on the floor heating insulation board 13 . The floor heating insulation board 13 itself has good thermal insulation performance, and has a high density of 1000Kpa, and the surface flatness is also high. The heat of the floor heating pipe 16 is evenly conducted upwards, so that the downward heat dissipation is less than 10%, which saves a lot of heat loss compared with the concrete floor heating module.

As shown in Figures 1-4, the first overhead plate 12 and the second overhead plate 14 are respectively provided with a leveling hole 121 and a leveling hole 141, and the leveling hole 121 and the leveling hole 141 are connected The adjustment holes on the platform 112 match, and are used to make room for adjustment tools for adjusting the first supporter 11 and the second supporter 19 . Before glueing the supporter (supporter one 11, supporter two 19) and the overhead board (the first overhead board 12, the second overhead board 14), first place the overhead board on the supporter, and level the hole one 121 and The second leveling hole 141 can fine-tune the first supporter 11 and the second supporter 19 to ensure the level of the first overhead board 12 and the second overhead board 14 .

The first skyboard 12, the second skyboard 14 and the self-decorating wallboard 25 are all asbestos-free calcium silicate boards. Asbestos-free calcium silicate board is an inorganic material with light weight and high strength, and its service life is almost equal to that of concrete blocks.

Embodiment two

As shown in Figure 6, a construction method of an overhead thermal insulation system in a building comprises the following steps,

Step 1: layout of water pipe 17, electric pipe 18 and floor heating main pipe 10;

Pipes are routed according to the indoor water, electricity, and heating needs and the interfaces of water, electricity, and heating.

Step 2: Lay out the supporter 11 and level it;

Avoiding all water pipes 17, electric pipes 18 and main floor heating pipes 10, evenly distribute several supporters 11 on the ground of the building structure, fix supporters 11 through connectors, and adjust the rotary table 112 according to the level gauge, Ensure that the rotating platforms 112 of several supporters 11 are located in the same plane. In particular, when the supporter 11 is arranged, the maximum inscribed circle diameter of the supporting end surface of the supporter 11 is 90 mm, and the distance between adjacent supporter 11 is not greater than 300 mm.

Step 3: laying the first overhead board 12;

Lay the first overhead plate 12 on the spin-up platform 112 of the supporter 11, and connect the first overhead plate 12 and the spin-up platform 112 through fasteners, and the structural holes provided on the fasteners and the spin-up platform 112 113 cooperates, and fastener selects expansion screw for use, and expansion screw expands and tightens in the structural hole 113.

Step 4: laying the floor heating insulation board 13;

The floor heating insulation board 13 is paved on the first overhead board 12, and the floor heating pipe 16 and the supporter 2 19 are embedded in the floor heating insulation board 13. Wherein, the floor heating pipe 16 is connected with the hot and cold water of the sub-collector.

Further, step 4 also includes the following steps in the process of laying the floor heating insulation board 13:

Step 41: Set up a relief channel on the floor heating insulation board 13; use the method of cross setting to gather the intersection point at the center of the leveling hole 121, and place the floor heating insulation board 13 on the first overhead board 12, the floor heating insulation board The point of intersection that 13 rubbings arrives is exactly the center of circle that opens the way slot.

Step 5: Adjust the supporter 2 19 and lay the second overhead board 14;

Adjust the rotating table 112 according to the level gauge, ensure that the rotating table 112 of several supporters 19 is in the same plane, then lay the second overhead board 14 on the rotating table 112 of the supporting device 219, and pass the fastening Components are connected, and the connection mode of the supporter 2 19 and the second slab 14 is the same.

Step 6: laying and pasting the decorative floor 15 . Further, when step 6 is laying the decorative floor 15,

If the decorative floor 15 is a floor, the adjacent floors are plugged in through their own manifolds;

If the decorative floor 15 is a floor tile, an I-shaped plug-in aluminum material is arranged between adjacent floor tiles, and the floor tile and the I-shaped plug-in aluminum material are bonded by an adhesive.

Step 7: Constructing the wall insulation chamber; constructing the wall insulation chamber includes the following steps,

Step 71: install several transverse keels 21 on the indoor wall of the building structure through expansion plugs 22;

Step 72: install the built-in skirting line 26 on the transverse keel 21 close to the decorative floor 15, and make the built-in skirting line 26 closely contact with the decorative floor 15;

Step 73: install the I-shaped strip 24 on the transverse keel 21;

Step 74: Install the self-decorating wallboard 25 on the I-strip 24, and the gap between the self-decorating wallboard 25 and the built-in skirting line 26 and the wall is a thermal insulation cavity.

Step 8: Fill the wall insulation layer 23; open a filling hole on the self-decorating wall panel 25, send the insulation foaming agent from the filling hole to the insulation cavity, and form the wall insulation layer 23 after the insulation foaming agent cools down.

The preferred embodiment of the invention has been described in detail above in conjunction with the accompanying drawings. However, the invention is not limited to the specific details in the above embodiment. Within the scope of the technical concept of the invention, various equivalent transformations can be performed on the technical solution of the invention. These equivalent transformations All belong to the scope of protection of the invention.

Claims (9)

1. A building indoor overhead thermal insulation system, characterized in that it includes a ground thermal insulation unit (1), and a wall thermal insulation unit (2) connected to the ground thermal insulation unit (1), wherein the ground thermal insulation unit (1) It includes a supporter one (11), a number of said supporter ones (11) are evenly distributed on the ground of the building structure, said supporter one (11) is laid with a first overhead board (12), and said first overhead board An overhead layer is formed between the board (12) and the ground, which is used to provide space for the layout of the floor heating main pipeline (10), water pipes (17) and electric pipes (18), and the first overhead board (12) is provided with a supporter Two (19), the axes of the supporter two (19) and the supporter one (11) are collinear, the second supporter (19) is laid with a second overhead board (14), and the second overhead board A floor heating insulation board (13) is provided between (14) and the first overhead board (12). The floor heating insulation board (13) is embedded with a floor heating pipe (16). Decorative floors (15) are laid. 2. The overhead thermal insulation system for building indoors according to claim 1, characterized in that the wall thermal insulation unit (2) includes a transverse keel (21) fixed on the wall of the building structure by means of an expansion plug (22) , a built-in skirting line (26) is installed on the transverse keel (21) close to the ground insulation unit (1), and the built-in skirting line (26) is in contact with the decorative floor (15), and the The horizontal keel (21) is provided with an I-shaped strip (24), and a self-decorating wallboard (25) is installed on the I-shaped strip (24), and the self-decorating wallboard (25) and the built-in skirting line (26 ) and the wall are provided with a wall insulation layer (23). 3. The overhead thermal insulation system for building indoors according to claim 1, characterized in that the first supporter (11) and the second supporter (19) have the same structure and are used for the first overhead board (12) and the second supporter (19) respectively. For the leveling of the second overhead board (14), the supporter one (11) includes a fixed seat (111) and a spin-up platform (112), and the fixed base (111) is threadedly connected with the spin-up platform (112), A number of structural holes (113) are uniformly arranged on the end surface of the spin-up table (112), and an adjustment hole matched with an adjustment tool is opened in the middle of the spin-up table (112). 4. The indoor overhead heat preservation system of a building according to claim 1, characterized in that, the floor heating insulation board (13) is provided with a heat conduction layer groove for embedded floor heating pipes (16), and the floor heating insulation The plate (13) is provided with a relief channel for filling the supporter 2 (19), the heat conduction layer groove and the relief channel have no intersection, and the floor heating insulation plate (13) is covered with aluminum heat radiation film (131). 5. The indoor overhead heat preservation system of a building according to claim 1, characterized in that, the first overhead board (12) and the second overhead board (14) are respectively provided with leveling holes one (121) and The second leveling hole (141), the first leveling hole (121) and the second leveling hole (141) are matched with the adjustment holes on the swivel platform (112), and are used for adjusting the supporter one (11) and the support Make way for the adjustment tool of device two (19). 6. A construction method based on the indoor overhead thermal insulation system of a building according to any one of claims 1-5, characterized in that it comprises the following steps, Step 1: Arrangement of water pipes (17), electric pipes (18) and floor heating main pipes (10); conduct pipe routing according to indoor water, electricity, and heating requirements and the interfaces of water, electricity, and heating; Step 2: Arrange supporter one (11) and level it; avoid all water pipes (17), electric pipes (18) and floor heating main pipes (10) and evenly distribute several supporter ones (11) on the ground of the building structure , and fix the supporter one (11) through the connecting piece, and adjust the swivel table (112) according to the level gauge, so as to ensure that the rotary table (112) of several supporter one (11) is located in the same plane; Step 3: Lay the first overhead board (12); Lay the first overhead board (12) on the rotary table (112) on the supporter one (11), and connect the first overhead board (12) through fasteners ) and the spin-up platform (112), the fasteners cooperate with the structural holes (113) opened on the spin-up platform (112); Step 4: Lay the floor heating insulation board (13); lay the floor heating insulation board (13) on the first overhead board (12), and embed the floor heating pipe (16) and supporter 2 (19) into the floor heating insulation inside the plate (13); Step 5: Adjust the supporter 2 (19) and lay the second overhead board (14); adjust the swivel table (112) according to the level gauge to ensure that the swivel table (112) of several supporter 2 (19) is located In the same plane, lay the second overhead board (14) on the rotary table (112) of the supporter two (19), and connect it through fasteners; Step 6: paving the decorative floor (15); Step 7: Constructing the wall insulation chamber; constructing the wall insulation chamber includes the following steps, Step 71: installing several transverse keels (21) on the indoor wall of the building structure through expansion plugs (22); Step 72: Install the built-in skirting line (26) on the transverse keel (21) close to the decorative floor (15), and make the built-in skirting line (26) closely contact with the decorative floor (15); Step 73: Install the I-strip (24) on the transverse keel (21); Step 74: Install the self-decorating wall panel (25) on the I-strip (24), the gap between the self-decorating wall panel (25) and the built-in skirting line (26) and the wall is an insulation cavity; Step 8: Fill the wall insulation layer (23); open a filling hole on the self-decorating wallboard (25), send the insulation foaming agent from the filling hole to the insulation cavity, and form the wall insulation layer after the insulation foaming agent cools (23 ). 7. The construction method of a building indoor overhead heat preservation system according to claim 6, characterized in that, when the supporter one (11) is arranged in step 2, the support end surface of the supporter one (11) is inscribed at the maximum The diameter of the circle is 90 mm, and the distance between adjacent supporters one (11) is not greater than 300 mm. 8. The construction method of a building indoor overhead thermal insulation system according to claim 6, characterized in that step 4 further includes the following steps in the process of laying the floor heating thermal insulation board (13): Step 41: Open a relief channel on the floor heating insulation board (13); use the method of cross setting to gather the intersection point at the center of the leveling hole 1 (121), and place the floor heating insulation board (13) on the first overhead board (12), the intersection point where the floor heating insulation board (13) is rubbed is exactly the center of circle of the channel for giving way. 9. The construction method of a building indoor overhead thermal insulation system according to claim 6, characterized in that, in step 6, when laying the decorative floor (15), If the decorative floor (15) is a floor, the adjacent floors are plugged in through their own manifolds; If the decorative floor (15) is a floor tile, an I-shaped plug-in aluminum material is arranged between adjacent floor tiles, and the floor tile and the I-shaped plug-in aluminum material are bonded by an adhesive.

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