Wall construction methods

Abstract

This invention provides a wall construction method for building walls that can suppress the growth and proliferation of mold even when high humidity environments persist for extended periods within a building. [Solution] The present invention relates to a wall construction method for constructing walls inside a building during building construction work, and comprises the steps of: preparing a gypsum board 10 having a waterproof membrane 26 formed on at least one of its back surface 22a and side surface 22b as a component of the wall; and arranging the gypsum board 10 at the wall construction location.

Description

Technical Field

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[0001] The present invention relates to a wall construction method, and particularly to a wall construction method for suppressing the generation and propagation of mold on walls inside a building.

Background Art

[0002] Walls and ceilings provided inside buildings such as houses generally have a structure in which a plurality of gypsum boards 50 are pasted on one side, and further, cross glue 52 is applied to the surface thereof and wallpaper 54 is pasted. The gypsum boards 50 are fixed to an exterior material 64 such as concrete with adjacent end faces abutted, and the gaps at the butted portion 57 and the gaps between the gypsum boards 50 and the wallpaper 54 are filled with putty 58 or the like. In general, the gypsum board 50 is composed of a gypsum core 60 and a base paper 62 covering the gypsum core 60, and cross glue 52 is applied to the surface of this base paper 62 and the wallpaper 54 is pasted.

[0003] Previously, mold generation on gypsum boards and wallpapers and mold exposure to the indoor side due to mold propagation on wallpapers have been problems. As countermeasures, for example, Patent Document 1 describes a method of containing a fungicide in the gypsum core and base paper of a gypsum board. Further, Patent Document 2 describes the use of wallpaper containing a fungicide.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, even when using gypsum boards or wallpapers described in Patent Documents 1 and 2, there was a problem in that mold growth on the gypsum boards or wallpapers could not be completely prevented if high humidity conditions persisted for a long time. Furthermore, while methods such as directly applying antifungal agents to the surface of wallpaper or gypsum board paper, or increasing the concentration of antifungal agents contained in wallpaper or paper, exist as countermeasures against these problems, there is a high possibility of adverse effects on human health, and there are concerns that the effectiveness of the antifungal agents will decrease over time due to the deterioration of their components. Furthermore, interior materials that can replace conventional gypsum board and wallpaper—specifically, materials that possess versatility, ease of installation, fire resistance, design diversity, and excellent mold resistance—are not yet available on the market.

[0006] Therefore, the present invention has been made in view of the above problems, and its objective is to provide a wall construction method for constructing a wall that can suppress the occurrence and proliferation of mold even when a high-humidity environment persists for a long period of time inside a building. [Means for solving the problem]

[0007] The above problems are solved by the wall construction method of the present invention, which is a wall construction method for constructing walls inside a building during building construction work, and comprises the steps of preparing gypsum board having a waterproof membrane formed on at least one of its back surface and side surface as a component of the wall, and arranging the gypsum board at the wall construction location.

[0008] According to the wall construction method of the present invention configured as described above, even if humid outside air flows from the outer shell to the back of the gypsum board, the supply of moisture to the back and sides of the gypsum board (specifically, the base paper) can be blocked. This prevents mold from growing and spreading on the back, sides, and surface of the gypsum board, as well as on the wallpaper attached to the surface of the gypsum board.

[0009] Furthermore, the above wall construction method is preferable to further include the steps of: placing a plurality of gypsum boards that constitute the wall at the construction location of the wall; applying a waterproofing agent to the end of each pair of gypsum boards that are adjacent to each other, and each pair of gypsum boards that are adjacent to each other across the gap formed between the pair of gypsum boards, on the side facing the gap; and filling the gap with a filler material. According to the above configuration, it is possible to prevent humid air from flowing from the back of the gypsum board into the gaps between the gypsum boards. In other words, it is possible to suppress the rise in humidity in the gaps between the gypsum boards. As a result, even if mold grows on the back and sides of the gypsum boards, it is possible to prevent the mold from growing on the surface side of the gypsum boards by absorbing moisture from the humid air in the gaps between the gypsum boards and traveling through the paper that serves as a nutrient source for the mold.

[0010] Furthermore, in the above-described wall construction method, in the step of preparing the gypsum board, it is more preferable to apply or spray a resin material onto at least one surface at the construction site to form a resin coating as a waterproof membrane. According to the above configuration, gypsum boards with a waterproof membrane can be easily prepared at construction sites.

[0011] Furthermore, the above wall construction method is more preferably further comprising the step of measuring the amount of moisture adhering to at least one surface before forming the waterproof membrane on site. With the above configuration, it becomes possible to check whether conditions are favorable for mold growth on the back and sides of the gypsum board before forming the waterproof membrane on site. If moisture remains on the back and sides (base paper) of the gypsum board, appropriate measures can be taken, and as a result, a waterproof membrane can be properly formed on the back and sides of the gypsum board.

[0012] Furthermore, in the above wall construction method, it is preferable to further include the step of applying an adhesive to the surface of the gypsum board and then attaching wallpaper to the surface of the gypsum board using the adhesive. According to the above configuration, since wallpaper is attached to the surface of a gypsum board with a waterproof membrane formed on its back and sides, it is possible to prevent mold from growing and spreading on the wallpaper. Specifically, when adhesive is applied to the surface of the gypsum board in order to attach wallpaper, mold is more likely to grow and spread, using the moisture and components contained in the adhesive as nutrients. In addition, at the joints where wallpaper pieces meet and in areas where the wallpaper has peeled off, the high humidity of the room makes it even easier for mold to grow and spread. Even in such situations, the formation of a waterproof membrane on the back and sides of the gypsum board effectively suppresses the growth and spread of mold. In other words, in a configuration where adhesive is applied to the surface of the gypsum board, the effect of suppressing the growth and spread of mold according to the present invention is more meaningfully demonstrated.

[0013] Furthermore, in the above wall construction method, if the measured moisture content exceeds the specified value, it is even more preferable to dry at least one surface before forming a waterproof film. According to the above configuration, it is possible to avoid forming a waterproof film while moisture exceeding the specified value remains attached to the back and sides of the gypsum board.

[0014] Furthermore, in the above-described wall construction method, it is preferable to further include a step of taking a sample from at least one side and measuring the number of organisms present in the sample before forming the waterproof membrane at the construction site. According to the above configuration, it becomes possible to check the number of organisms such as mold on the back and sides of the gypsum board before forming the waterproof membrane on site. If a large number of organisms are present on the back and sides (base paper) of the gypsum board, appropriate measures can be taken, and as a result, a waterproof membrane can be properly formed on the back and sides of the gypsum board.

[0015] In addition, in the above wall construction method, when the measured value in the inspection exceeds the specified value, it is more preferable to form a waterproof film after disinfecting at least one surface. According to the above configuration, it is possible to avoid forming a waterproof film in a state where the number of organisms exceeding the specified value adheres to the back surface and side surfaces of the gypsum board.

[0016] In addition, in the above wall construction method, it is preferable that the waterproof film is formed of a material containing at least one of microbeads and microplastics. According to the above configuration, the waterproof film becomes difficult to peel off from the gypsum board.

[0017] In addition, in the above wall construction method, it is preferable that the waterproof agent contains at least one of microbeads and microplastics. According to the above configuration, the waterproof agent adhering to the gap provided between the gypsum boards becomes difficult to peel off.

Effect of the Invention

[0018] According to the wall construction method of the present invention, even if a high-humidity environment continues for a long time, it is possible to install a wall in the building where mold is difficult to generate and propagate.

Brief Description of the Drawings

[0019] [Figure 1] It is a block diagram schematically showing a wall structure by a wall construction method according to an embodiment of the present invention. [Figure 2] It is a block diagram schematically showing a conventional wall structure.

[0020] [[ID=三十七]]<<Regarding the wall construction method according to an embodiment of the present invention>> Hereinafter, an embodiment of the present invention (hereinafter, this embodiment) will be described with reference to the accompanying drawings. Please note that the drawings have been somewhat simplified and schematic in order to make the explanation easier to understand. Also, the size (dimensions) of each component and the spacing between components shown in the drawings may differ from the actual dimensions.

[0021] Furthermore, in this specification, "wall" refers to a component in which wallpaper is used as the material (finishing material) for the interior of a building and gypsum board is used as the base material, or where decorative gypsum board is used as the finishing material, and examples include partition walls and ceiling walls. Furthermore, in this specification, unless otherwise specified, "gypsum board" includes decorative gypsum board and consists of a gypsum core (hereinafter referred to as "core") composed of gypsum and various additives, and a base paper (hereinafter referred to as "base paper") that covers the core. Furthermore, in this specification, "the back surface of the gypsum board" refers to the surface facing the exterior, and "the front surface of the gypsum board" refers to the surface facing the interior. Similarly, the front surface of the wallpaper also refers to the surface facing the interior.

[0022] The wall construction method of the present invention is used for constructing interior walls in building construction work, and more specifically, for constructing interior walls within a building. In the following description, a wall construction method using gypsum board as the base material and wallpaper as the finishing material will be used as an example. In the following, the site where the building construction work is carried out will also simply be referred to as the "site."

[0023] <<Example of wall configuration according to a wall construction method based on one embodiment of the present invention>> As shown in Figure 1, the wall provided by the wall construction method according to this embodiment comprises gypsum board 10 and wallpaper (cross) 14, and is installed inside a building.

[0024] The gypsum board 10 is a panel consisting of a core 20 and a base paper 22 that covers the core 20. Multiple gypsum boards 10 are arranged side by side to cover the exterior material 24 and are attached to the exterior material 24 via an air layer 25. In this embodiment, the exterior material 24 is not particularly limited as long as it can fix the gypsum board 10, and may be a column, stud, steel frame, brace, etc. Furthermore, in this embodiment, the method of fixing the gypsum board 10 is not particularly limited, and for example, the gypsum board 10 may be directly attached to the exterior material 24.

[0025] The core 20 of the gypsum board 10 is mainly composed of gypsum, and the base paper 22 covering its surface is made of paper and pulp. The wallpaper 14 is a vinyl chloride wallpaper commonly used as an interior material, specifically a paper with a vinyl chloride resin laminated onto a paper base, and more precisely, a wallpaper in which an antifungal agent is mixed into the resin layer. However, the wallpaper 14 is not limited to this, and any commercially available general wallpaper, such as paper with an olefin resin laminated onto a paper base, can also be used. The wallpaper 14 is attached to the surface 22c of the gypsum board 10 using wallpaper adhesive 32. For example, the wallpaper adhesive 32 can be a water-based adhesive such as starch paste.

[0026] A waterproof membrane 26 is formed on the surface (back surface 22a) of the gypsum board 10 facing the exterior material 24, and on the side surface 22b of the gypsum board 10, which is the end surface of the butt joint portion 37. Furthermore, among the multiple gypsum boards, the gaps between adjacent pairs of gypsum boards 10, i.e., the joints, are treated with a waterproofing agent 28 to prevent mold growth, and then filled with putty 30. Specifically, the waterproofing agent 28 is first applied to the end of the gypsum board 10 facing the gap (joint), and then the putty 30 is filled into the gap. The putty 30 corresponds to the "filler" of the present invention. Furthermore, wallpaper 14 is attached to the interior space-facing side (surface 22c) of the gypsum board 10 using wallpaper adhesive 32. Note that the wallpaper adhesive 32 corresponds to the "adhesive" of the present invention.

[0027] The material forming the waterproof membrane 26 and the waterproofing agent 28 are not particularly limited as long as they are waterproof paints, and known waterproof paints can be used. For example, urethane-based paints, silicone-based paints, fluorine-based paints, acrylic paints, etc. can be used. Examples of urethane-based paints include those containing polyurethane rubber, which is obtained by reacting polyisocyanate and polyol, as a main component. Examples of silicone-based paints include those containing acrylic silicone resin as a main component. Examples of fluorine-based paints include those containing polytetrafluoroethylene (PTFE) or ethylenetetrafluoroethylene (ETFE) as their main components. Examples of acrylic paints include those containing acrylic rubber as a main component. The type of organic solvent used to dissolve the aforementioned resin material is not particularly limited, as long as it does not impair the waterproofing function.

[0028] Furthermore, the waterproof film 26 and waterproofing agent 28 may contain at least one of microbeads and microplastics. This makes it more difficult for the waterproof film 26 and waterproofing agent 28 to peel off from the gypsum board 10.

[0029] Here, we will explain the functions and effects of the waterproof membrane 26 and the waterproofing agent 28. As mentioned earlier, even with walls using gypsum board or wallpaper containing conventional antifungal agents, mold growth and proliferation could not be sufficiently suppressed if high humidity conditions persisted. In response to this problem, the inventors conducted diligent research and formulated the following hypothesis regarding the process by which mold grows on interior materials when high humidity conditions persist for a long period of time.

[0030] The inventors first prepared a wall composed of the base material and finishing material shown in Table 1 below, and confirmed the differences in mold growth on the wall under high humidity conditions (25°C, 90%RH). Specifically, we prepared samples of commonly used gypsum board (Yoshino Gypsum Co., Ltd. / product name: Tiger Board) and gypsum board containing an antifungal agent (Yoshino Gypsum Co., Ltd. / product name: Tiger Board Type Z-WR) (hereinafter referred to as antifungal gypsum board) with antifungal paint applied to the surface (Reference Examples 1 and 2), gypsum board and antifungal gypsum board with wallpaper containing an antifungal agent attached to the surface with wallpaper adhesive (Reference Examples 3 and 4), decorative gypsum board with striped holes pressed into the base paper (Yoshino Gypsum Co., Ltd. / product name: Gyptone), and decorative gypsum board containing an antifungal agent (Yoshino Gypsum Co., Ltd. / product name: Antifungal Gyptone) (hereinafter referred to as antifungal decorative gypsum board), with and without antifungal agents applied to the back surface (Reference Examples 5 and 6), and left in a high-humidity environment for a long period of time to check the difference in mold growth. The results are shown in Table 1.

[0031] [Table 1]

[0032] As shown in Table 1, no mold grew on the surface of the gypsum board or wallpaper (Reference Examples 1-4), but mold growth was observed on both the front and back surfaces of the decorative gypsum board (Reference Examples 5 and 6). Furthermore, upon examining the cross-sections of gypsum board and decorative gypsum board, the inventors found that mold was present on the base paper covering the core, particularly on the base paper in contact with the wallpaper in Reference Examples 3 and 4. Based on these results and the conditions under which mold is likely to grow, specifically humidity (moisture), air (oxygen), temperature (20-30°C), nutrients, and the material of the interior material, the inventors conducted further investigations and estimated the mold growth process on interior materials when high humidity conditions persist for a long period of time as follows.

[0033] In a conventional wall (see Figure 2), for example, in a building where the room temperature is maintained at 20-30 degrees Celsius, humid outside air flows in from the exterior envelope between the exterior material 64 and the back surface 62a of the gypsum board 50. When this air comes into contact with the back surface 62a (base paper 62) of the gypsum board 50, the base paper 62 absorbs the moisture contained in the outside air. Furthermore, if high humidity conditions persist for a long time, the base paper 62 can maintain a certain level of moisture. In addition, since the base paper 62 is composed of paper and pulp (organic matter), which are nutrients for mold growth, the back surface 62a of the gypsum board 50 meets all the optimal conditions for mold growth and reproduction. Therefore, when mold spores contained in the outside air come into contact with the back surface 62a of the gypsum board 50, which meets these conditions, it is thought that mold will grow and reproduce.

[0034] Furthermore, mold that develops and grows on the back surface 62a of the gypsum board 50 travels along the base paper 62, from the back surface 62a of the gypsum board 50 to the side surface 62b of the gypsum board 50, specifically through the butt joint 57 of the gypsum boards 50, and reaches the surface surface 62c (base paper 62) of the gypsum board 50. Furthermore, if the wallpaper 54 is not attached to the base paper 62 with wallpaper adhesive 52 in a way that does not contain air, or if there are butt joints 66 between the wallpapers 54, the surface 62c (base paper 62) of the gypsum board 50 will have all the ideal conditions for mold growth and reproduction due to the moisture contained in the wallpaper adhesive 52 and base paper 62, the warm air in the room, and the nutrients contained in the wallpaper adhesive 52 and base paper 62. As a result, mold will grow even more, spreading to the surface of the wallpaper 54 from the butt joints 66 between the wallpapers 54 and the peeled areas of the wallpaper 54.

[0035] Based on these findings, the inventors have discovered that, as shown in Figure 1, by covering the base paper 22 of the gypsum board 10 (specifically, the back surface 22a and the side surface 22b) with a waterproof membrane 26 and the gaps between the gypsum boards 10 with a waterproofing agent 28, it is possible to sufficiently suppress the growth and proliferation of mold even in walls made of conventionally used gypsum boards or wallpaper containing antifungal agents, when high humidity conditions persist.

[0036] One case in which the above effects can be particularly effectively demonstrated is the construction of ceiling walls where indoor units of air conditioners are installed. Specifically, condensation is likely to occur around the indoor units of ceiling-mounted air conditioners, creating an environment where mold easily grows and proliferates. However, by constructing ceiling walls using the wall construction method of the present invention, which will be described later, the growth and proliferation of mold can be effectively suppressed.

[0037] Next, the wall construction method in this embodiment will be described with reference to Figure 1. The wall construction method in this embodiment is used in the construction of a building that includes a wall constructed by this method. The wall construction method according to this embodiment includes the steps of: preparing a gypsum board 10 on which a waterproof membrane 26 is formed on the back surface 22a and the side surface 22b; arranging a plurality of gypsum boards 10 that constitute the wall at the construction location of the wall, leaving gaps between the gypsum boards 10; applying a waterproofing agent 28 to the end of the side surface 22b of the gypsum board 10 located at the abutting portion 37 of the gypsum board 10; filling the gaps with putty 30; applying wallpaper adhesive 32 to the surface surface 22c of the gypsum board 10; and attaching wallpaper 14 to the surface surface 22c of the gypsum board 10 with the wallpaper adhesive 32. These steps are performed in the order described above. In this embodiment, these steps are carried out on site.

[0038] Furthermore, if the wall is not composed of multiple gypsum boards 10, the steps of placing the multiple gypsum boards 10 in the wall construction position while leaving gaps between them, applying the waterproofing agent 28, and filling the gaps with putty 30 can be omitted. Furthermore, the step of applying the wallpaper 14 described above does not necessarily need to be included if the base paper 22 of the gypsum board 10 is decoratively processed and can be used as a finishing material (for example, when using decorative gypsum board).

[0039] Furthermore, in this embodiment, a waterproof film 26 is formed on both the back surface 22a and the side surface 22b, but the embodiment is not limited to this, and it is also acceptable to form the waterproof film 26 on at least one surface. The same applies to the other steps. Furthermore, the "end of the side surface 22b of the gypsum board 10 located at the butt joint portion 37 of the gypsum board 10" corresponds to the "end of each of the pair of gypsum boards 10 that are adjacent to each other with a gap in between, among the multiple gypsum boards 10, that faces the gap" in the present invention.

[0040] In the step of preparing the gypsum board 10 on which the waterproof membrane 26 is formed, a resin material is applied or sprayed onto the back surface 22a and the side surface 22b to form a resin coating as the waterproof membrane 26. Here, it is preferable to have a step of measuring the amount of moisture adhering to the surface on which the waterproof membrane 26 will be formed before forming the waterproof membrane 26 at the site, specifically, a step of measuring the moisture content of the surface on which the waterproof membrane 26 will be formed and confirming whether or not the surface on which the waterproof membrane 26 will be formed is dry.

[0041] The moisture content can be measured using an electrical resistance type or a high-frequency capacitance type moisture meter. For example, when measured with the HI-520 high-frequency capacitance type concrete / mortar moisture meter manufactured by Kett Scientific Laboratories, if the moisture content is within the specified range of 2-4%, it is determined to be dry, and the waterproof film 26 is formed as is. On the other hand, if it exceeds the specified value, the surface with the moisture content exceeding the specified value is dried before forming the waterproof film 26. Furthermore, the specified value is not particularly limited and can be set as appropriate, as long as there is no significant difference (approximately ±1) from the surface moisture content of the gypsum board 10 at the time of shipment. Furthermore, there are no particular limitations on the drying method; for example, this could involve using a hairdryer or heater, or leaving it in an environment where drying is possible.

[0042] Furthermore, before forming the waterproof membrane 26 on-site, samples can be taken from the back surface 22a and the side surface 22b, and the number of organisms present in the samples can be measured to confirm whether or not the surface on which the waterproof membrane 26 will be formed is in an environment where mold is likely to grow and proliferate. The ATP swab method (A3 method) can be used to measure the number of organisms present. The ATP swab method detects ATP, ADP, and AMP contained in organic matter of biological origin and quantifies their total amount. This allows for quick on-site confirmation of how easily bacteria can grow on the surface forming the waterproof membrane 26. However, the above tests are not particularly limited and can be performed using general microbiological tests, as long as they can confirm whether or not the environment is conducive to mold growth and proliferation.

[0043] In the ATP swab method, if the measured value exceeds the standard value of 1000 RLU, which indicates an environment where mold is unlikely to grow and reproduce, the back surface 22a and side surface 22b are cleaned and disinfected, and then a waterproof membrane 26 is formed. On the other hand, if the standard value is not exceeded, in other words, if the risk of mold growth and reproduction is low, the waterproof membrane 26 is formed directly on the back surface 22a and side surface 22b. The cleaning and disinfection methods are not particularly limited as long as they can remove organisms such as mold attached to the back and sides of the gypsum board and improve the degree of contamination on the back and sides of the gypsum board. Examples include spraying disinfectant and replacing the gypsum board 10.

[0044] In the step of applying the waterproofing agent 28, a resin material as the waterproofing agent 28 is applied or sprayed onto the edge of the gypsum board 10 facing the gap (joint) to form a coating film. The amount of waterproofing agent 28 to be applied is not particularly limited as long as it is an amount that can cover the gap and fill the gap with putty.

[0045] According to the present invention, when constructing interior walls using conventionally used gypsum board or wallpaper, it is possible to provide walls that are less susceptible to mold growth and proliferation. More specifically, even with walls using conventional gypsum board or wallpaper, it is possible to sufficiently suppress the growth and proliferation of mold that occurs when high humidity conditions persist for a long period of time.

[0046] Although one embodiment of the wall construction method of the present invention has been described above, the above embodiment is merely an example to facilitate understanding of the present invention and does not limit it. In other words, the present invention can be modified and improved without departing from its spirit. Furthermore, the present invention naturally includes methods similar to or equivalent to those described herein.

[0047] Furthermore, other embodiments (modified versions) of the present invention that differ from the embodiments described above are conceivable. Modified versions will be described below. In the following, the differences from the embodiments described above will be the main focus, and common points will be omitted from the explanation.

[0048] In the above embodiment, a waterproofing agent was applied to the gypsum board on-site to form a waterproofing membrane. However, the invention is not limited to this, and the waterproofing membrane may be formed at the gypsum board production plant, and the gypsum board with the waterproofing membrane already formed may be transported to the construction site. [Explanation of symbols]

[0049] 10.50 gypsum board 32, 52 Cross glue 14, 54 wallpaper 20, 60 cores 22, 62 Original paper 22a, 62a back side 22b, 62b side 22c, 62c surface 24, 64 Exterior materials 25 Air layer 26 Waterproof membrane 28 Waterproofing agent 30, 58 putty 32, 52 Cross glue 37, 57 Butt joint of plasterboard 66. Butt joint of wallpaper

Claims

1. In building construction work, a wall construction method for constructing walls inside a building, The process involves preparing a gypsum board with a waterproof membrane formed on at least one of its back and side surfaces as a component of the wall, The steps include: placing the gypsum board at the installation location of the wall; A wall construction method having the following characteristics.

2. The steps include: placing the multiple gypsum boards that constitute the wall at the construction location of the wall; A step of applying a waterproofing agent to the end of each of the adjacent pairs of gypsum boards among the multiple gypsum boards, on the side facing the gap formed between the pair of gypsum boards, The process of filling the gap with a filler, The wall construction method according to claim 1, further comprising the above.

3. The wall construction method according to claim 1, wherein in the step of preparing the gypsum board, a resin material is applied or sprayed onto at least one surface at the construction site to form a coating of the resin material as the waterproof membrane.

4. The wall construction method according to claim 3, further comprising the step of measuring the amount of moisture adhering to at least one of the surfaces before forming the waterproof membrane at the site.

5. The wall construction method according to claim 1, further comprising the steps of applying an adhesive to the surface of the gypsum board and attaching wallpaper to the surface of the gypsum board using the adhesive.

6. The wall construction method according to claim 4, wherein if the measured moisture content exceeds a specified value, the waterproof film is formed after drying at least one of the surfaces.

7. The wall construction method according to claim 1, further comprising the step of taking a sample from at least one surface and measuring the number of organisms present in the sample before forming the waterproof membrane at the construction site.

8. The wall construction method according to claim 7, wherein if the measured value in the inspection exceeds a specified value, the waterproof membrane is formed after disinfecting at least one of the surfaces.

9. The wall construction method according to claim 1, wherein the waterproof membrane is formed of a material containing at least one of microbeads and microplastics.

10. The wall construction method according to claim 2, wherein the waterproofing agent comprises at least one of microbeads and microplastics.

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