JP7601612B2 - Floor insulation reinforcement structure and its construction method - Google Patents

Description

The present invention relates to an insulating reinforcement structure for floors in architectural structures (e.g., apartment buildings) and a construction method thereof.

Traditionally, insulation has been an important factor for building structures in terms of energy conservation, and evaluations have been conducted based on the "Next Generation Energy Conservation Standards" (1999 Standards). However, in reality, evaluations have only been conducted based on the insulation performance of the building structure's outer envelope, and no comprehensive evaluation of the entire building structure, including the performance of the equipment, has been conducted. As a result, it has been difficult to objectively compare the energy conservation performance of the entire building structure, and the evaluation method has been reviewed.

As a result, the "Revised Energy Conservation Standards" (2013 Standards) came into effect on April 1, 2015. As a result, "insulation reinforcement above floors" of building structures has become mandatory in regions with insulation performance grades 4 and 1-5, which are considered high levels of energy conservation performance. For this reason, there are concerns that measures that are an extension of conventional insulation reinforcement structures and their construction methods could result in poor insulation performance and put strain on processes and labor.

Conventional insulation supplementary structures above the floor include a structure in which urethane foam insulation is laid on the underside of the floor section (floor panel) to prevent cold air from underneath (see, for example, Patent Document 1). More specifically, as shown in Figure 3, floor insulation is laid on the underside of the flooring. Furthermore, wall insulation is provided on the inside of the exterior wall, and a structure is used to prevent cold air from not only underneath the floor but also from the exterior wall.

JP 2012-12767 A

However, in the above-mentioned conventional insulation reinforcement structure above the floor, there is a problem with the insulation effect because a self-leveling material is interposed between the insulation material of the wall and the insulation material of the floor. In other words, the parts where the insulation material is not continuous become thermal bridges, reducing the insulation performance, and there is a risk that the "revised energy conservation standards" will not be met.

In addition, in apartment buildings, the construction procedures for exterior walls, floors, and interior walls are important. Each construction worker is assigned to a specific task, and if construction is not done efficiently, construction time will be delayed and unnecessary labor will be wasted.

The first object of the present invention is to provide an insulation reinforcement structure on the floor and a construction method thereof that improves thermal bridges that occur in insulation structures on the floor of building structures and improves insulation performance. The second object of the present invention is to provide an insulation reinforcement structure on the floor and a construction method thereof that solves the above-mentioned thermal bridge problem without changing or adding to the construction procedure.

In order to solve the above problems, the feature of the floor insulation reinforcement structure of the present invention is that insulating mortar, rather than floor insulation, is placed between the self-leveling material laid on the floor surface and the wall insulation material installed on the inside of the exterior wall.

In other words, the present invention is an insulation reinforcement structure on a floor in a building structure in which wall insulation is provided inside an exterior wall and above a floor slab, and is characterized by comprising a self-leveling material laid directly below the wall insulation on the upper surface of the floor slab, insulation mortar laid directly below the wall insulation on part of the upper surface of the self-leveling material, and floor insulation laid on part of the upper surface of the self-leveling material with its outer end surface abutting the inner surface of the insulation mortar.

The present invention is also a method for constructing an insulating reinforcement structure on a floor in a building structure in which wall insulation is provided inside an exterior wall and above a floor slab, and is characterized by comprising the steps of laying a self-leveling material on the upper surface of the floor slab from immediately below the position where the wall insulation is to be provided, laying insulating mortar on a portion of the upper surface of the self-leveling material from immediately below the position where the wall insulation is to be provided, and laying floor insulation on a portion of the upper surface of the self-leveling material with its outer end face abutting the inner surface of the insulating mortar.

In the insulation reinforcement structure on the floor according to the present invention, the floor insulation is laid in contact with the inner surface of the insulating mortar laid on part of the upper surface of the self-leveling material from directly below the position where the wall insulation is to be installed, so that the wall insulation, insulating mortar, and floor insulation are continuously configured, improving the insulation performance without creating a thermal bridge. Furthermore, damage to the floor insulation can be avoided because local compression from the wall insulation is not applied to the floor insulation.

In addition, in the construction method for the insulation reinforcement structure on the floor according to the present invention, the process of laying the self-leveling material is followed immediately by the process of laying the insulating mortar, so that these tasks can be performed by the same construction worker at approximately the same time, eliminating the need for a new construction worker to perform the tasks. Furthermore, the process of laying the floor insulation material can be performed approximately simultaneously with the process of laying the flooring, eliminating the need for curing during construction work and finishing work.

1 is a schematic diagram of a heat insulating reinforcement structure in one embodiment of the present invention. 1 is a schematic diagram of a construction method for an insulating reinforcement structure in one embodiment of the present invention. FIG. FIG. 1 is a schematic diagram of a conventional heat insulation reinforcement structure.

Hereinafter, a heat insulation reinforcement structure and its construction method according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 shows a partial end face of a heat insulation reinforcement structure installed in a specific room of an apartment building. Figure 2 shows the heat insulation reinforcement structure shown in Figure 1 in the construction order.
In order to emphasize the configuration of the invention, parts that are not directly related to the explanation are depicted with dashed lines.

As shown in Figure 1, the present invention is an insulation reinforcement structure on the floor of an apartment building in which wall insulation 3 is installed inside the exterior wall 1 and above the floor slab 2, and includes a self-leveling material 4 laid directly below the wall insulation on the top surface of the floor slab 2, insulation mortar 5 laid directly below the wall insulation on part of the top surface of the self-leveling material, and floor insulation 6 laid on part of the top surface of the self-leveling material with its outer end face abutting the inner surface of the insulation mortar.

Next, each component that constitutes the above-mentioned thermal insulation reinforcement structure will be described with reference to Figure 1.

The exterior wall 1 may be, for example, made from the outside, of finishing materials such as tiles and ALC (autoclaved lightweight concrete), and the lower part may be fixed to other exterior walls or beams H with a specified angle bar.

The floor slab 2 may be made of concrete, for example, and its outer end may be fixed to an exterior wall or beam H.

The wall insulation material 3 may be made of, for example, urethane foam, and may be located inside the exterior wall 1, with its outer end face abutting the inner surface of the exterior wall.

The wall base and wall material 7 may comprise, for example, from the outside, a wooden base and a board material such as gypsum board.
The exterior wall 1, floor slab 2, wall insulation material 3, and wall base and wall material 7 are not limited to those described above, and the materials and configurations may be changed as appropriate.

The self-leveling material 4 may have a fluidity that allows it to cover the upper surface of the floor slab 2. There are no limitations on the shape of the self-leveling material 4, and it may be, for example, one that has a step portion to form a lower upper surface and a higher upper surface.

The heat insulating mortar 5 preferably has a predetermined strength and does not deform even when local compression is applied from the wall insulation material 3. The heat insulating mortar 5 may be in the form of a sheet.
There is no limitation on the length and width of the insulating mortar 5.

The floor insulation material 6 may be a low formaldehyde material having heat insulating properties, such as "Zetlon (registered trademark)." The floor insulation material 5 may be in the form of a sheet.
There is no limitation on the length and width of the floor insulation material 5.

Next, we will explain the construction method of the insulation reinforcement structure on the floor in one embodiment of the present invention with reference to Figure 2.

First, assume that the beam H, exterior wall 1, and floor slab 2 have been constructed as shown in Figure 2 (A).

Next, as shown in Fig. 2(B), the self-leveling material 4 is provided immediately below the position where the wall insulation material 3 is to be provided and on the upper surface of the floor slab 1, with its outer end face abutting the inner surface of the exterior wall 1 or the angle iron fixing this exterior wall. Furthermore, the insulating mortar 5 is continuously laid immediately below the position where the wall insulation material 3 is to be provided and on a part of the upper surface of the self-leveling material 4, with its outer end face abutting the inner surface of the exterior wall 1 or the angle iron fixing this exterior wall. With this procedure, the insulating mortar 5 can be installed almost simultaneously with the laying of the self-leveling material 4, so no additional work is required.
The shapes and dimensions of the self-leveling material 4, the insulating mortar 5, and the floor insulation 6 may be adjusted so that the upper surfaces of the self-leveling material 4, the insulating mortar 5, and the floor insulation 6 are flush with each other. For example, the self-leveling material 4 may be provided with a step, and when the insulating mortar 5 is laid on the lower upper surface, the shape and dimensions of the higher upper surface may be set to the same height as the upper surfaces of the insulating mortar 5 and the floor insulation 6.

Next, as shown in Figure 2 (C), the wall insulation material 3 may be installed with its lower end face abutting the upper surface of the insulating mortar 5, and its outer end face abutting the inner surface of the exterior wall 1. Furthermore, the wall base and wall material 7 are installed on the upper surface of the insulating mortar 5 with its outer end face abutting or close to the inner surface of the wall insulation material 3. This procedure makes it possible to avoid local deformation of the floor insulation material 6 by applying local compression to the insulating mortar 5 from the wall insulation material 3 and the wall base and wall material 7.

2(D), the floor insulation material 6 is provided on the upper surface of the self-leveling material 4 with its outer end face abutting the inner surface of the insulating mortar 5 and its inner side face abutting the side of the step of the self-leveling material 4, so that the upper surface of the self-leveling material 4, the upper surface of the insulating mortar 5, and the upper surface of the floor insulation material 6 are flush with each other. Furthermore, the flooring F may be continuously laid on the upper surfaces of the self-leveling material 4, the insulating mortar 5, and the floor insulation material 6 with its outer end face abutting or close to the inner surfaces of the wall base and the wall material 7. This procedure allows the floor insulation material 6 to be installed at approximately the same time as the flooring F is laid, so no additional work is required.
In addition, a baseboard B may be inserted between the wall base and wall material 7 and the flooring F.

In this way, in one embodiment of the present invention, the insulation reinforcement structure on the floor is constructed by laying the floor insulation 6 in contact with the inner side of the insulating mortar 5 laid on part of the upper surface of the self-leveling material 4 from directly below the position where the wall insulation 3 is to be installed, and since the wall insulation, insulating mortar, and floor insulation are configured in a continuous manner, it is possible to improve the insulation performance without creating a thermal bridge. Furthermore, since local compression from the wall insulation 3 is not applied to the floor insulation 5, damage to the floor insulation can be avoided.

In addition, in one embodiment of the present invention, the construction method for the insulation reinforcement structure on the floor involves laying the self-leveling material 4 followed immediately by laying the insulating mortar 5, so that these tasks can be performed by the same construction worker at approximately the same time, eliminating the need for a new construction worker to perform the tasks. Furthermore, the process of laying the floor insulation material 6 can be performed at approximately the same time as the process of laying the flooring F, eliminating the need for curing during construction work and finishing work.

The floor insulation reinforcement structure of the present invention can be widely used not only in apartment buildings, but also in individual houses, corporate buildings, and industries related to medical facilities, nursing care facilities, etc.

1. Exterior wall 2. Floor slab 3. Wall insulation 4. Self-leveling material 5. Insulation mortar 6. Floor insulation

Claims (1)

A method for constructing a heat insulation reinforcement structure on a floor in a building structure in which a wall insulation material is provided inside an exterior wall and above a floor slab, comprising:
Laying a self-leveling material on the upper surface of the floor slab directly below the location where the wall insulation material will be installed;
A step of laying insulating mortar on a part of the upper surface of the self-leveling material from directly below the position where the wall insulating material is to be installed;
A step of laying a floor insulation material on a part of the upper surface of the self-leveling material with its outer end surface abutting the inner surface of the insulating mortar;
and laying flooring on top of each of the self-leveling material, the insulating mortar, and the floor insulating material;
The step of laying the self-leveling material and the step of laying the insulating mortar are carried out substantially simultaneously,
A method for constructing an insulation reinforcement structure on a floor, comprising performing the step of laying the floor insulation material and the step of laying the flooring substantially simultaneously .

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