JPH11324188A - Ventilating structure of external wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability of structural materials by preventing dew condensation from generating in a wall body inside and a mortar layer from warping by the external pressure in the external wall by a mortar finish wet method in a wooden house. SOLUTION: An external wall structure provided with a plate material 2 set to an outside face of a structural material 1 such as a sill, a beam, and a column which are the external wall substrates and formed into a mortal layer 9 in the outside face of the plate material 2 via waterproofing paper 7 and lath 8 has such a structure as having an air ventilating path in the wall body by interposing an angle ventilating substrate between the plate material 2 and the mortar layer 9. The ventilating substrate 6 forming the ventilating path has a structure bent into a bellows so as to be conveniently held and attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for an outer wall of a mortar application wet method in a wooden house.

[0002]

2. Description of the Related Art Conventionally, the outer wall of a mortar-painted wet construction method for a wooden house is provided with a lath base plate on the outer surface of a structural material such as a foundation, a beam, a pillar, etc., which is a base of the outer wall, and waterproof on the outer surface of the lath base plate. It has a structure in which a mortar layer is formed via paper and a lath net.

[0003] Recently, as the lath base plate, a construction method using a plate material such as a structural plywood has been widely used in order to strengthen the strength of the wall and to provide the entire building with earthquake resistance.

[0004]

However, in the construction method using a plate material such as a plywood for a structure, four circumferences of an outer wall are surrounded by structural materials such as a base, a beam, a pillar and a stud, and the surface has no gap. Since the plate material is stretched, it is almost in a sealed state, and when the moisture of the outside air enters through the mortar layer and dew condensation occurs in the wall, the dew condensation water is not discharged. However, there is a problem that the plate material is corroded with time and the durability is reduced.

For this purpose, a rim is provided vertically on the outer surface of a plate material such as a structural plywood, a waterproof paper is stretched on the outer surface of the rim, and a lath net is attached on the outer surface to form a mortar layer. That construction method is also being carried out.

However, in this method, since a space is formed between the vertical torso edges, ventilation can be taken through the space, moisture in the wall can be released to the outside, and the problem of dew condensation can be solved. Therefore, when an external pressure is applied to the outer surface of the mortar layer, the mortar layer is warped and causes cracks.

The present invention has been made in view of the above-mentioned drawbacks, and prevents the occurrence of dew condensation in a wall.
It is an object of the present invention to provide a ventilation structure of an outer wall which can prevent a mortar layer from being deformed by external pressure and can improve durability of a structural material, a plate material such as a structural plywood and a mortar layer.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises the steps of attaching a plate such as a plywood for structural use to an outer surface of a structural material such as a base, a beam, a pillar or the like which is a base material of an outer wall, and By interposing a mountain-shaped ventilation base material on the outside surface of the ventilation base material and forming a mortar layer via a waterproof paper and a lath net on the outside surface of the ventilation base material, an air passage is provided in the wall body, It takes in outside air from the lower part, raises the moisture inside the wall together with the outside air by the chimney effect, and tries to escape to the outdoors from the back of the eaves.

Further, the ventilation base material has a triangular chevron shape and can be folded in a bellows shape. By folding the ventilation base material, bulkiness during transportation is eliminated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an outer wall ventilation structure according to the present invention. FIG. 2 is a cross-sectional view of the same.

In the present invention, as shown in FIGS. 1 and 2, as an outer wall foundation, a structural material 1 composed of columns 11 and studs 12 and the like, and an inner wall material 4 such as a gypsum board is provided on the inner surface of the structural material 1.
On the outer surface, a plate material 3 such as a structural plywood is stretched, and in a space sandwiched between the inner wall material 4 and the plate material 3, a heat insulating material 2 such as glass wool is loaded.

Then, a plate material 3 stretched on the outer surface of the structural material 1
On the outer surface of the vertical body edge 5 is mounted in a vertical direction at a position corresponding to the pillar 11 and the stud 12 at a predetermined interval (usually 455 mm interval) in the left-right direction. Vent base material 6 having substantially the same height as vertical waist edge 5
Is attached.

Further, waterproof paper 7 and lath net 8 are adhered to the entire outer surface of the vertical trunk edge 5 and the ventilation base material 6 in this order, and a mortar layer is formed on the outer surface of the lath net 8. Is done.

Here, as shown in FIG. 3, the ventilation base material 6 has a ventilation portion 61 having a triangular mountain shape (a), a square mountain shape (b), a wave mountain shape (c) or the like, and is formed at both ends of the ventilation portion 61. It is a rectangular plate made of paper, plastic, metal or the like composed of the flat portion 62 thus formed.

The flat portion 62 of the ventilation base material 6 is used for fixing the ventilation base material 6 to the vertical waist edge 5.
Is placed on the upper surface of the vertical waistline, and fastened and fixed with fasteners such as tuckers and nails.

The height of the chevron shape of the ventilation base material 6 is as follows:
When fastened between the vertical waist edges 5, the upper surface of the vertical waist edge 5 is substantially flush with the upper surface.

The waterproof paper 7 and the lath net 8 are fastened to the vertical waist edge 5 with a tucker, a clip or the like.

With this configuration, a space is formed in the wall by the ventilation portion 61 of the mountain-shaped ventilation base material 6, and this space serves as an air passage, so that the outside air taken in from the lower part is formed. It rises due to the chimney effect and is discharged outside from the eaves back through this space. At this time, the moisture inside the wall is also discharged together with the outside air.

Further, since the vertical waist edge 5 and the outer surface of the ventilation base material 6 are substantially flush with each other, even if an external pressure is applied from the outer surface of the mortar layer 9, the ventilation base material 5 is located between the vertical waist edges 5. As in the case where there is no 6, the mortar layer 9 does not suffer from warping, so that cracks and the like due to this do not occur.

Further, it is more desirable that the ventilation base material 6 is a bellows formed by folding a plate made of paper or plastic into a triangular shape so that the base material 6 can be transported in a folded state and spread and attached on site. .

By being foldable in this way, the material can be conveyed without being bulky and without damaging the material, and the transportation cost can be reduced. Furthermore, since it is possible to freely adjust the height to the height corresponding to the thickness of the vertical waist edge 5, a ventilation base material corresponding to the thickness of the vertical waist edge becomes unnecessary, and the complexity of inventory management and the like can be eliminated. .

[0022]

According to the structure of the present invention, the angled ventilation base material is provided between the vertical body edges (between the plate material of the outer wall and the mortar layer), so that the space between the plate material and the mortar layer is provided. Is formed, and the space serves as an air passage for releasing outside air taken in from the lower part together with moisture in the wall to the outside from the eaves back or the like.

Therefore, the inside of the wall is kept dry,
Since there is no dew condensation or the like, there is no possibility that structural materials such as columns and beams, plate materials, and the like are corroded with time and the durability is impaired.

Further, since the ventilation base material is loaded between the vertical body edges, the mortar layer does not bend even when an external pressure is applied from the outer surface of the mortar layer. Therefore, the durability of the mortar layer is excellent.

Further, by reinforcing the out-of-plane force by the ventilation base material,
Lath nets and the like do not need to have special strength. In addition, even when ironing the mortar, a uniform coating surface can be obtained without pressing the lath net.

Further, by making the ventilation base material a triangular bellows, the material can be folded, so that the material is not bulky and does not hurt the material at the time of transportation, so that the transportation cost can be reduced.

Further, since the bellows are spread on the site and fastened to the vertical rim, the thickness of the ventilation layer can be freely adjusted according to the thickness of the rim.

Further, when the ventilation base material is made of a waterproof material such as plastic, the ventilation base material plays a role of waterproofing in addition to the waterproof paper, so that it is double waterproof and the waterproof performance is further increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an outer wall ventilation structure according to the present invention.

FIG. 2 is a cross-sectional view of the ventilation structure of the outer wall shown in FIG.

FIG. 3 is a perspective view of a ventilation base material constituting the ventilation structure of the outer wall shown in FIG. 1;

[Explanation of symbols]

1: Structural material 2: Thermal insulation material 3: Plate material
4 ... inner wall material 5 ... vertical waist edge 6 ... ventilation base material 61 ... ventilation section
62 ... flat part 7 ... waterproof paper 8 ... lath net 9 ... mortar layer

Claims (2)

[Claims] 1. An outer wall structure in which a plate material is provided on the outer surface of a structural material such as a base, a beam, or a pillar, which is a base material of an outer wall, and a mortar layer is formed on the outer surface of the plate material via a waterproof paper or a lath net. A ventilation structure for an outer wall, wherein a mountain-shaped ventilation base material is interposed between the mortar layer and the mortar layer. 2. The outer wall ventilation structure according to claim 1, wherein the ventilation base material has a triangular mountain shape and can be folded in a bellows shape.