JPH0713396B2 - Exterior wall repair structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a repair structure for an outer wall of a building or a structure, for example, an existing outer wall formed by a mortar wall, a concrete wall or the like.

[Conventional technology]

Generally, in order to impart heat insulating property to an existing outer wall such as an existing concrete wall or mortar wall, the inner wall side or outer wall is destroyed and removed, and then a heat insulating material such as glass wool is laid and the wall surface is finished. Was there. However, in this case, the construction took a long time, dust was generated when removing the existing inner and outer walls, and the living had to be temporarily interrupted by removing the inner and outer walls. For this reason, an external heat insulating structure has been devised in which a heat insulating material is arranged on the surface of an existing outer wall and a new outer wall surface is arranged on the surface. However, there is a disadvantage in that it is not possible to prevent internal dew condensation on the prefabricated outer wall, and it is not possible to prevent generation of mold and mites and corrosion of the skeleton on the prefabricated outer wall.

[Means for solving problems]

In order to solve such a drawback, the present invention provides a mortar wall,
In the existing outer wall made of concrete wall, etc., form a plurality of ventilation holes that penetrate to the inside of the wall body, arrange the furring strip on the prefabricated outer wall, and then install a plate-shaped heat insulating plate on the surface of the furring strip. The outer wall of the heat insulating plate has a structure in which the dry wall material is arranged on the outer surface of the heat insulating plate. The outer wall prevents internal dew condensation due to the ventilation hole and the continuous space between the heat insulating plate and the existing outer wall formed by being raised by the furring strip. It proposes a repair structure.

〔Example〕

An embodiment of the outer wall repair structure according to the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) are a partially cutaway perspective view and a cross-sectional view showing an example of the repair work according to the present invention, in which 1 is a prefabricated wall body, an interior material 2, main pillars, and studs. With a frame 3 made of, and a prefabricated outer wall 4, for example, a lath board 4a is arranged on the body 3, and a waterproof sheet 4 is provided on the surface of the lath board 4a.
b, lath material 4c is arranged, and mortar layer 4d is arranged thereon. Reference numeral 5 denotes a ventilation hole which penetrates the existing outer wall 4 and is provided with a plurality of holes. This ventilation hole 5 is a prefabricated wall
This is for moving the air inside 1 to the continuous space 8 to be described later, and also helps to improve the sound absorption and the soundproofing of the wall as a side effect. The shape is, for example, a circular shape ((a) as shown in FIGS. 2 (a) to (e)).
Figure), oval (Figure (b)), quadrangle (Figure (c)), triangle (Figure (d)), trapezoid (Figure (e)), and also Figures 3 (a) to (k). As shown in Fig. 2, it may be formed into a tubular shape (Fig. (A)), a taper shape ((b), (c)), or an inclined outer wall 4 (Figs. (D) and (e)). (F) ~
It is optional as shown in FIG. The ventilation holes 5 are
It may be provided so as to be evenly distributed over the entire surface of the existing outer wall 4, or may be provided so as to be unevenly distributed such that the vicinity of the base portion and the vicinity of the eaves are dense. 6 is a furring strip made of wood, metal, synthetic resin, etc., having a square cross section, a trapezoidal solid shape, a pipe shape, or a shape, The heat insulating plate 7 and the dry wall material 9 which will be described later are fixed, and the continuous space 8 is provided between the heat insulating plate 7 and the ready-made outer wall 4.
It functions as a bulking material for forming the.
Reference numeral 7 is a heat insulating plate, for example, a board made of synthetic resin foam such as phenol foam, polyisocyanurate foam, polystyrene foam, and polyurethane foam, or various flame retardants (boric acid compounds, silicic acid compounds, etc.) Boards mixed with combustion aids (including various mineral fibers such as asbestos) and aggregates (perlite grains, artificial aggregates, etc.), or gypsum board, siding board, siding insulation board, wood chip cement board, particle board, silica Calcium acid plate, glass fiber board, etc., or a board consisting of a heat insulating layer 7a obtained by laminating a plurality of these layers, or a metal thin plate, various sheet-like materials (hereinafter simply referred to as sheet 7b) laminated on these boards. Insulated, soundproof, and
It adds fire resistance. The heat insulating plate 7 is arranged on the surface of the furring strip 6, and the furring strip 6 forms a continuous space 8 between the surface of the existing outer wall 4 and the heat insulating plate 7. Further explaining, the heat insulating plate 7 has a shape as shown in FIGS. 4 (a) to 4 (k). That is, (a) is a front surface of the heat insulating layer 7a, a heat insulating plate 7 whose back surface is covered with the sheet 7b, and (b) is a heat insulating plate 7 where either the front surface or the back surface of the heat insulating layer 7a is covered with the sheet 7b, (C) is a heat insulating plate 7 consisting only of the heat insulating layer 7a, (d) is a heat insulating plate 7 in which at least one side of the sheet 7b covering the heat insulating layer 7a is projected from the heat insulating layer 7a by Δl,
(E) The figure shows one set of heat insulating plates 7 or two sets of two facing plates.
(F) is a heat insulating plate 7 whose sides are confronted with each other. One set of heat insulating plates 7, or two sets of two opposite sides having a rough structure, (h) The figure shows one set of two heat insulating plates 7, or two sets of two opposite sides. Structured heat insulating plate 7, (i) ~
(K) The figure shows a groove 7c on at least one of the front and back surfaces of the heat insulating plate 7.
It is the heat insulating plate 7 provided with. In addition, it is also possible to make the heat insulation plate 7 which combined each of the figures (a) to (k).
A continuous space 8 formed between the heat insulating plate 7 and the existing outer wall 4
Functions as a flow path for the air cycle and also has a vent hole 5
This is for diffusing and discharging the moisture in the existing outer wall 1 discharged from the inside. Therefore, in addition to functioning as an air cycle for cooling in summer and warming in winter, it also has an effect of preventing internal dew condensation in the wall body and preventing generation of mold and mites. The dry type wall material 9 is, for example, as shown in FIGS. 5 (a) to (q), 6 (a) to (p), and 7 (a) to (e), male and female types. A member having a connecting portion, or simply abutting flat plates or forming a stepped shape, forms the outermost surface in the outer wall repair structure according to the present invention, and is a decorative material, a waterproof material, a heat insulating material, or a soundproofing material. It functions as a fireproof material. Explaining further, the dry wall material 9 is shown in FIGS. 5 (a) to (q) and FIG. 6 (a).
~ (P) as shown in Figure 7 (a) ~ (e) sandwich structure of surface material 9a-core material (plastic foam, mineral fibers, gypsum board, etc.) 9b-back surface material 9c It is made of ceramics, concrete, ALC, ceramics, etc. In FIG. 1, the dry wall member 9 is shown as a horizontal liner, but it is also possible to arrange it as a vertical line.

Next, a construction example will be briefly described.

First, as shown in FIG. 1, a plurality of ventilation holes 5 are formed in a preformed outer wall 4 of the prefabricated wall body 1 by a drill or the like. Then furry edge 6
Is fixed to the surface of the existing outer wall 4 with a fixture 10 such as a nail.
Next, the heat insulating plate 7 as shown in FIG. 4 (a) is fixed on the furring strip 6 by using the fixture 10. Next, the dry wall material 9 is arranged on the heat insulating plate 7 by using the fixture 10 or the mounting metal fitting. Although not shown, the base portion and the eaves portion are formed by using a drainage, a parting edge or the like.

[Other Examples]

What has been described above is only one embodiment of the outer wall repairing structure according to the present invention, and the furring strip 6 has Δt and Δt ′ as shown in FIG.
It is also possible to dispose laterally at an interval of (Δt = Δt ′ or Δt ≠ Δt ′) and to arrange the dry wall material 9 (not shown) vertically. Further, a waterproof sheet such as asphalt felt, terfelt, synthetic resin sheet, metal foil (Al) or the like can be provided on the entire surface between the dry wall material 9 and the heat insulating plate 7. Alternatively, it is possible to stretch a waterproof sheet or a humidity control sheet on the furring strip 6 and dispose the heat insulating plate 7 on the surface thereof. The upper and lower openings of the continuous space 8 are
It is possible to open to the outside or open below the floor at the base and at the back of the shed at the eaves. It is also possible to install an opening / closing device (not shown) at the upper and lower openings of the continuous space 8 so as to open / close depending on the humidity inside the wall and the temperature of the room and the outside air.

〔The invention's effect〕

As described above, according to the outer wall repairing structure of the present invention, it is not necessary to dismantle the existing outer wall, so that it is possible to omit the number of steps for construction, significantly shorten the construction period, and hinder the living during construction. There is a feature that does not come. In addition, since a ventilation hole and a continuous space that is continuous between the heat insulating plate and the prefabricated outer wall are formed in the prefabricated outer wall, moisture inside the prefabricated wall can be diffused and discharged, internal condensation is prevented, and the body and body Corrosion of structural members such as edges can be prevented, durability can be greatly improved, and generation of mold and mites can be prevented, and habitability can be greatly improved. Moreover, since the continuous space between the existing outer wall and the heat insulating plate functions as an air cycle path, the heat insulating property is improved. In addition, since the heat insulating plate is arranged on the furring strip and the dry wall material is arranged on the heat insulating plate, the construction can be easily performed without requiring skill. Further, since the continuous space is insulated by the heat insulating plate and the dry wall material, it is not directly affected by the change of the outside temperature, the dew condensation in the space is prevented, and the air cycle effect can be effectively utilized.
There are effects and features.

[Brief description of drawings]

1 (a) and 1 (b) are partially cutaway perspective views showing an example of the outer wall repairing structure according to the present invention, and sectional views, FIGS. 2 (a) to (e), and FIG. 3 (a). ~ (K) is an explanatory view showing a modified example of the ventilation hole, Fig. 4 (a) ~ (k) is an explanatory view showing an example of a heat insulating plate, Fig. 5 (a) ~ (q), Fig. 6 ( a) ~
7 (p) and FIGS. 7 (a) to 7 (e) are explanatory views showing an example of the dry type wall material, and FIG. 8 is an explanatory view showing another embodiment of the disposition state of the furring strip. 1 …… Prefabricated wall, 4 …… Prefabricated outer wall, 5 …… Ventilation hole, 6 ・ ・ ・
… Furring strip, 7… Insulation plate, 8… Continuous space, 9… Dry wall material.

Claims (1)

[Claims] 1. A prefabricated outer wall composed of a mortar wall, a concrete wall or the like of a building or a structure is provided with a plurality of vent holes penetrating the prefabricated outer wall, and furring strips are arranged on the prefabricated outer wall.
An outer wall repair structure characterized in that a plate-shaped heat insulating plate is arranged on the furring strip, a continuous space is provided between the existing outer wall and the heat insulating plate, and a dry wall material is arranged on the surface of the heat insulating plate. .