JP3739744B2 - Painted wall structure and painted wall construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a painted wall structure and a painted wall construction method, and more particularly, to a painted wall structure finished with a painted wall material such as plaster or gypsum plaster on a wall surface of a house, and the like. And how to do.
[0002]
[Prior art]
Coated walls made of plaster or plaster plaster are widely used as finishing interior walls in houses.
The general painted wall is constructed by applying a base material such as gypsum board or plywood to the frame structure of the wall composed of pillars and crosspieces. Is applied and dried and cured to form a coated wall layer.
Some coated wall materials have a certain amount of moisture absorption and desorption, and are known to have a humidity control function that maintains a good indoor humidity environment. It has also been proposed to use a material with excellent humidity control as the material of the painted wall, or to add a humidity control material such as diatomaceous earth to the material of the painted wall material to enhance the humidity control function. ing.
[0003]
Furthermore, a technique for enhancing the humidity control function or the capacity of moisture that can be absorbed and released by using a gypsum board having humidity control for the base material on which the coating wall material is applied has also been proposed.
By setting the back side of the base material as a ventilation space that penetrates the interior of the wall, moisture can pass from the indoor space through the painted wall layer and the base material to the ventilation space in the wall. It has also been proposed to improve the humidity environment.
[0004]
[Problems to be solved by the invention]
However, in the painted wall structure as described above, there is a problem that the unevenness of the base material and the steps and gaps at the joints impair the workability and finished quality of the painted wall coated on the surface.
The base material is usually formed in a rectangular shape or the like with a certain size, and is laid and placed on the surface of a grid-like frame structure composed of wall pillars and bars, and fixed by nailing or screwing. If the flatness of the base material varies, or if the flatness of the pillars and crosspieces that serve as mounting surfaces is not good, unevenness occurs between adjacent base materials. If there is a shape error or fixed displacement of the base material, a gap may be generated between the base materials.
[0005]
It is technically difficult to apply the coating wall material to the surface of the base material having such unevenness and gaps. In some cases, unevenness of the base material or gaps may appear on the surface of the painted wall layer. If the painted wall layer is formed with a sufficient thickness, it is possible to hide the unevenness and gaps of the base material to a certain extent, but applying the coated wall material thickly increases the labor and material costs. To do. In particular, when the coated wall layer is required to have high moisture permeability, an excessively thick coated wall layer greatly impairs moisture permeability. In addition, even if the base material is uneven or hidden at the time of construction, as the coating wall material dries and hardens and the time elapses, the coating material layer shrinks and deforms, causing the base material unevenness and gap. As a result, cracks and cracks may occur in the coated wall layer.
[0006]
An object of the present invention is to prevent the quality performance of the painted wall structure from being deteriorated due to unevenness or gaps in the base material in the painted wall structure as described above, and to easily perform the painted wall construction. It is to be.
[0007]
[Means for Solving the Problems]
The painted wall structure according to the present invention is a painted wall structure in which a painted wall material is applied to the surface of a wall body, and is a base material composed of a humidity control gypsum board disposed on the surface side of the wall body; A kenaf fiber board having a moisture permeability of 1000 g / m ² · 24 h or more, which is affixed to the surface of the material without a gap; and a coated wall layer in which a moisture permeable coated wall material is applied as the coated wall material on the surface of the kenaf fiber board; Is provided.
[Wall body]
Applies to walls in ordinary houses and other buildings. For example, the present invention can be applied to a ceiling wall, a column wall, and the like in addition to side walls such as an outer wall that partitions an indoor space and an outdoor space, and a partition wall that partitions the indoor spaces.
[0008]
The wall body includes a frame structure or a support structure including a steel frame, a wooden pillar, a concrete frame, and the like, and an exterior structure and an interior structure arranged on the surface thereof.
The painted wall structure is an exterior structure or an interior structure constructed on the surface of the wall body.
[Base material]
It is arranged on the surface side of the wall body and becomes a base for constructing the painted wall layer.
Basically, the same material and structure as the base material in the normal painted wall structure are employed.
Examples of the material for the base material include plywood, gypsum board, and wood fiber board. If a base material having humidity control properties such as a humidity control gypsum board is used, the humidity environment of the indoor space can be improved. A material having moisture permeability but not moisture conditioning is also useful.
[0009]
Although the thickness of a base material changes with materials, it is about 6-15 mm normally.
The base material is fixed to the support structure of the wall body by means such as screwing, nailing or bonding. It is desirable that the base material is attached as little as possible without unevenness, steps, and gaps. However, in the present invention, by having a kenaf fiber board, the base material is not so uneven. Don't make it.
[Kenaf fiber board]
Affixed to the surface of the base material without any gaps.
The kenaf fiber board is an integrated and integrated fiber of kenaf plants that are annual grasses. In addition to kenaf fiber, the core of a kenaf plant can also be blended. Kenaf fiber boards have the advantage of being excellent in strength and deformation resistance even when they are thin.
[0010]
The thickness of the kenaf fiber board is set in the range of 1 to 5 mm. Preferably it is 2-4 mm. A thicker one improves the deformation resistance, but increases the cost and increases the wall thickness.
Kenaf fiber board is a material with excellent moisture permeability. In order to improve the humidity improvement function of the indoor space, a moisture permeability of 1000 g / m ² · 24 h or more is preferable.
In order to attach the kenaf fiber board to the base material, normal fixing means such as nailing, screwing, and adhesion can be employed.
(Painted wall layer)
A coated wall material is applied to the surface of the kenaf fiber board.
[0011]
As the material of the painted wall material, the coating method, etc., the same technology as that of a normal painted wall can be adopted.
Hydraulic materials such as plaster, gypsum and cement can be used as the painted wall material. Some are blended or colored. Use of a coated wall material containing a humidity control material such as diatomaceous earth is effective in improving the humidity environment of the indoor space.
Although the thickness of a coating wall layer changes with materials to be used and construction conditions, it is normally set to 3-10 mm.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The painted wall structure shown in FIG. 1 is applied to the indoor wall surface of a house.
As for the wall structure, humidity control gypsum board 12 (made by Chiyodaute Co., Ltd., thickness 12 mm) is pasted on the surface of the room R side with a screw or by bonding to the frame structure where the wooden crosspiece 10 is arranged. The
A kenaf fiber board 14 (manufactured by Matsushita Electric Industrial Co., Ltd., thickness 2 mm) is attached to the surface of the humidity control gypsum board 12 by adhesion or a combination of adhesion and nailing.
On the surface of the kenaf fiber board 14, a painted wall layer 16 coated with a painted wall material is formed. The painted wall layer 16 was coated with a coated wall material (manufactured by Tagawa Sangyo Co., Ltd.) with a thickness of 6 mm, and was dried and cured. The painted wall layer 16 is exposed to the room R.
[0013]
In the wall structure as described above, the kenaf fiber board 14 is affixed to the surface of the humidity control gypsum board 12, so that unevenness, steps, gaps, etc. of the humidity control gypsum board 12 are present on the surface. It can be solved by pasting. The kenaf fiber board 14 has a smooth surface and is easy to perform the coating operation of the coating wall material.
In the construction state, excessive moisture generated in the indoor space R is absorbed by the coating wall layer 16. A part of the moisture in the moisture absorbed by the painted wall layer 16 is retained by the painted wall layer 16, but the remaining moisture passes through the kenaf fiber board 14 and is absorbed by the humidity control gypsum board 12. A part of the moisture is also retained in the humidity control gypsum board 12, and the remaining moisture is discharged into the wall space W on the back surface of the humidity control gypsum board 12. If the intra-wall space W can be ventilated, the moisture released into the intra-wall space W is discharged along with the ventilation. As a result, even if the indoor space R becomes excessively high in humidity and water is generated that cannot be absorbed and retained by the painted wall layer 16 and the humidity-adjusting gypsum board 12 alone, It passes through the fiber board 14 and the humidity control gypsum board 12 and is discharged into the wall space W, so that the humidity environment of the indoor space R can be maintained comfortably for the occupant. In addition, when the indoor space R becomes too dry, the water | moisture content absorbed and hold | maintained at the coating wall layer 16 or the humidity control gypsum board 12 is discharge | released to the indoor space R. It is possible to prevent the indoor space R from being dried excessively.
[0014]
【The invention's effect】
In the painted wall structure according to the present invention, a painted wall layer is formed on the surface of a base material such as a gypsum board via a kenaf fiber board. The kenaf fiber board covers the unevenness, gaps, and steps of the base material, facilitating the application of the coating wall material to form the coating wall layer, and improving the finished quality of the coating wall layer. Moreover, since the kenaf fiber board is excellent in moisture permeability, moisture or moisture can be circulated between the indoor space and the base material and the wall space, and the humidity environment of the indoor space can be maintained well.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a painted wall structure representing an embodiment of the present invention.
DESCRIPTION OF SYMBOLS 10 Wood pier 12 Humidity control plaster board 14 Kenaf fiber board 16 Painted wall layer R Interior space W Interior space

Claims (3)

A painted wall structure in which a painted wall material is applied to the surface of a wall,
A base material composed of a humidity control gypsum board disposed on the surface side of the wall, and
A kenaf fiber board having a moisture permeability of 1000 g / m ² · 24 h or more, which is affixed to the surface of the base material without a gap;
A painted wall structure comprising: a coated wall layer in which a moisture-permeable coated wall material is coated on the surface of the kenaf fiber board as the painted wall material . The base material is a humidity control gypsum board having a thickness of 6 to 15 mm,
The kenaf fiber board has a thickness of 1 to 5 mm and a moisture permeability of 1000 g / m ² · 24 h or more,
The coating wall layer is coated with a moisture-permeable coating wall material and has a thickness of 3 to 10 mm.
The painted wall structure according to claim 1, wherein the wall body has a ventilation space on a back surface of the base material. A method for constructing a painted wall in which a painted wall material is applied to the surface of a wall,
A step of affixing a base material composed of a humidity control gypsum board to the support member of the wall body (a),
A step (b) of attaching a kenaf fiber board having a moisture permeability of 1000 g / m ² · 24 h or more to the surface of the base material without gaps;
A coated wall construction method including a step (c) of applying a moisture-permeable coated wall material as the painted wall material to the surface of the kenaf fiber board.

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