JP7526076B2 - Above-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 coming in 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 not only from 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, which reduces 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 a floor and a construction method thereof that improves thermal bridges that occur in insulation structures on floors of building structures and improves insulation performance. The second object of the present invention is to provide an insulation reinforcement structure on a 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 insulation reinforcement structure on the floor according to the present invention is characterized by providing an auxiliary insulation material between the insulation material laid on the floor surface and the insulation material installed on the inside of the exterior wall.

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

The present invention is also a method for constructing a thermal 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 the steps of: providing an insulation auxiliary material directly below the position where the wall insulation is provided and on the upper surface of the floor slab; laying floor insulation material on a portion of the upper surface of the floor slab with its outer end surface abutting the inner surface of the insulation auxiliary material; and laying a self-leveling material on the upper surfaces of the floor slab and the floor insulation with its outer end surface abutting the inner surface of the insulation auxiliary material.

The floor insulation reinforcement structure of the present invention provides a continuous structure of wall insulation, insulation auxiliary material, and floor insulation material by providing an insulation auxiliary material directly below the wall insulation material and on the top surface of the floor slab, thereby improving insulation performance without creating thermal bridges.

In addition, in the construction method for the insulation reinforcement structure on the floor according to the present invention, the process of installing the auxiliary insulation material is immediately followed by the process of installing the floor insulation material, so that these tasks can be performed by the same construction worker at approximately the same time, eliminating the need for a separate construction worker to carry out the tasks.

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 where wall insulation 3 is installed inside the exterior wall 1 and above the floor slab 2, and includes an insulation auxiliary material 4 installed directly below the wall insulation material and on the upper surface of the floor slab, floor insulation 5 laid on part of the upper surface of the floor slab with its outer end surface abutting the inner surface of the insulation auxiliary material, and self-leveling material 6 laid on the upper surfaces of the floor slab and the floor insulation with its outer end surface abutting the inner surface of the insulation auxiliary material.

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 heat insulating auxiliary material 4 may be a material having heat insulating properties, water resistance and vibration resistance, for example, "Mirablock (registered trademark)". The shape of the heat insulating auxiliary material 4 may be rectangular, and the thickness (position of the upper surface) is preferably higher than the upper surface of the self-leveling material 6 in the laid state.
There is no limitation on the length and width of the heat insulation auxiliary material 4.

The floor insulation material 5 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.

The self-leveling material 6 may be fluid enough to cover the top surface of the floor insulation material 5 and the top surface of the floor slab 2.

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 Figure 2 (B), the insulation auxiliary material 4 is placed directly below the intended location for the wall insulation material 3 and on the top surface of the floor slab 1, with its outer end face abutting the inner surface of the exterior wall 1 or the angle iron that secures this exterior wall. Furthermore, the floor insulation material 5 is continuously laid on part of the top surface of the floor slab 1, with its outer end face abutting the inner surface of the insulation auxiliary material 4. This procedure allows the insulation auxiliary material 4 to be installed at approximately the same time as the floor insulation material 5 is laid, so no additional work is required.

Next, as shown in FIG. 2(C), the wall insulation material 3 is installed with its lower end face abutting the upper surface of the insulation auxiliary material 4, and its outer end face abutting the inner surface of the exterior wall 1. Furthermore, the self-leveling material 6 is continuously laid with its outer end face abutting the inner surface of the insulation auxiliary material 4 so as to cover the upper surface of the floor insulation material 5 and the floor slab 1. In this state, the upper surface of the insulation auxiliary material 4 may be higher than the upper surface of the self-leveling material 6. This procedure makes it possible to realize a structure in which multiple split materials with insulating properties are continuous from the wall insulation material 3 through the insulation auxiliary material 4 to the floor insulation material 5. In addition, since the floor insulation material 5 is covered from the top with the self-leveling material 6, this floor insulation material can be securely fixed.

2(D), the wall base and wall material 7 are provided on the upper surface of the self-leveling material 6 with their outer end faces abutting or adjacent to the inner surfaces of the wall insulation material 3. Furthermore, flooring F may be continuously laid on the upper surface of the self-leveling material 6 with its outer end face abutting or adjacent to the inner surfaces of the wall base and wall material 7.
In addition, a baseboard B may be inserted between the wall base and wall material 7 and the flooring F.

In this way, the insulation reinforcement structure on the floor in one embodiment of the present invention is constructed by providing the insulation auxiliary material 4 directly below the wall insulation material 1 and on the top surface of the floor slab 2, so that the wall insulation material, the insulation auxiliary material, and the floor slab are continuously constructed, thereby improving the insulation performance without creating thermal bridges.

In addition, in one embodiment of the present invention, the construction method for the insulation reinforcement structure on the floor proceeds to the step of installing the floor insulation material 5 immediately after the step of installing the insulation auxiliary material 4, so that these tasks can be performed by the same construction worker at approximately the same time, eliminating the need for a separate construction worker to perform the tasks.

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. Insulation support material 5. Floor insulation material 6. Self-leveling material

Claims (2)

A thermal 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,
An insulation auxiliary material provided directly below the wall insulation material and on the upper surface of the floor slab;
A floor insulation material is laid on a part of the upper surface of the floor slab with its outer end surface abutting the inner surface of the insulation auxiliary material;
A self-leveling material is laid on the upper surfaces of the floor slab and the floor insulation material with its outer end surface abutting the inner surface of the insulation auxiliary material. A method for constructing a heat insulation reinforcement structure on a floor in a building structure in which wall insulation material is provided inside an exterior wall and above a floor slab, comprising the steps of:
Providing a thermal insulation support material immediately below the location where the wall insulation material is provided and on the upper surface of the floor slab;
A step of laying a floor insulation material on a part of the upper surface of the floor slab with its outer end surface abutting the inner surface of the insulation auxiliary material;
A step of laying a self-leveling material on the upper surface of the floor slab and the floor insulation material with its outer end surface abutting the inner surface of the insulation auxiliary material;
A method for constructing an insulation reinforcement structure on a floor, comprising:

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