JPS63122859A - Outer wall remodeling structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for repairing an exterior wall of a building or structure, such as a prefabricated exterior wall formed of a mortar wall or a concrete wall.

[Conventional technology]

-G, in order to add insulation to existing external walls such as concrete walls and mortar walls, destroy or remove the internal walls or external walls, and then install a thermal insulating material such as glass wool.
This was done by finishing the walls. However, in this case, the construction work took a long time, dust was generated when the existing inner and outer walls were removed, and the residence had to be temporarily suspended due to the removal of the inner and outer walls. For this reason,
An external heat insulation structure has been devised in which a heat insulating material is placed on the surface of an existing external wall, and a new external wall is placed on that surface.

However, this method has disadvantages in that it cannot prevent internal condensation on the existing external wall, and cannot prevent the growth of mold and mites, as well as the corrosion of the frame of the existing external wall.

[Means to solve the problem]

In order to solve these drawbacks, the present invention aims to solve this problem by adding mortar walls,
A plurality of ventilation holes are formed in a prefabricated external wall made of concrete walls, etc. that penetrate to the inside of the wall, and a rim is provided on the prefabricated external wall, and then a heat insulating board is placed at least between the rims and between the prefabricated walls. The structure is such that there is a continuous space between the external wall surface and the insulation board, and drywall material is placed on the outside surface of the insulation board, and the ventilation holes and the space between the insulation board and the existing external wall, This project proposes a modified exterior wall structure that prevents internal condensation.

C Embodiment] An embodiment of the outer wall repair structure according to the present invention will be described below with reference to the drawings. FIGS. 1(a) and 1(b) are a perspective view and a sectional view showing an example of the repair work according to the present invention,
The upper part is a prefabricated wall, an interior material 2, a frame 3 consisting of main pillars and studs, and a prefabricated outer wall 4. For example, a wooden slope 4a is placed on the frame 3.
A mortar layer 4c made of lath material 4b is placed on the surface of the temporary wood sill 4a. Reference numeral 5 denotes a plurality of ventilation holes which penetrate through the existing outer wall 4 and are provided in plural numbers. This ventilation hole 5 is for moving the air inside the existing wall to a space 8 which will be described later, and is also useful for improving sound absorption and soundproofing of the wall. be. For example, as shown in Figure 2 (a) to (el), the shape is circular (Figure (a)), oval (Figure (b)), or square ((
Figure C), triangle (Figure (d)), trapezoid (Figure (e)), etc., as well as cylindrical shapes ((Figure 3 fa) to
(a) figure), tapered shape ((b), fC1 figure), formed at an angle to the prefabricated outer wall 4 ((d), (01 figure),
Moreover, as shown in (f) to (k), it is arbitrary. Note that the ventilation holes 5 may be provided so as to be uniformly distributed over the entire surface of the existing outer wall 4, or may be provided unevenly, such as in the vicinity of the base and in the vicinity of the eaves. 6 is the body rim, which is made of wood, metal, synthetic resin, etc., and has a rectangular cross section.
It has a trapezoidal solid shape, pipe shape, rod shape, opening shape, engineered shape, etc., and it fixes the heat insulation board 7 and drywall material 9, which will be described later, and also creates a space 8 between the heat insulation vi7 and the prefabricated outer wall 4. It functions as a raising material for forming. 7 is a heat insulating board, such as a board made of synthetic resin foam such as phenol foam, polyisocyanurate foam, polystyrene foam, polyurethane foam, gypsum board, sheathing board, sheathing insulation board, wood cement board, particle boat, cage, etc. The heat insulating layer 7 is made of a single piece of calcium oxide board, a glass fiber board, or a composite thereof, or is laminated with a thin metal plate or various sheet materials (hereinafter simply referred to as sheet 7b), and has been renovated. This adds insulation, soundproofing, and fireproofing properties to the wall. This heat insulating plate 7 is disposed at least between the furrows 6 and has a shape that forms a space 8 between it and the surface of the existing outer wall 4.

Specifically, for example, the shape is as shown in FIG. The heat insulating plate 7 has both ends of the sheet 7b protruding from the heat insulating layer 7a by Δ!1 and Δ12, and has ears 7C for fixing to the body rim 6.
, fb1 figure shows that the front and back surfaces of the heat insulating layer 7a are covered with sheaths 7b, and both ends of one shea h7a are separated by Δ7? from the heat insulating layer 7a.
! , a heat insulating plate 7 provided with an ear portion 7c protruding by Δβ2,
Figures (C) and (d) show a heat insulating plate 7 in which the side surface 7d of the heat insulating layer 7a is formed into an arc shape or an inclined shape, (e) and ff1.
The figure shows a square, trapezoid, etc. on the back side of the heat insulating layer 7a. 47
A heat insulating plate 7, fg provided with e and fitted with the furring 6
Figure 1 shows (el), figure (f) shows the heat insulating plate 7 with opposite ends or four sides of the heat insulating plate 7, and figure (h) shows (Q
), ffIn the figure, the heat insulating board 7 has both sides of the heat insulating board 7 or the four sides inclined. Figures (1) and U) show the case of a heat insulating plate 7 consisting of a single heat insulating layer 78, and figure fl) shows a heat insulating plate 7.01 with cutouts 7f for fixing both ends to the rim 6. This is a heat insulating plate 7 having a groove 7e on its back surface into which a furring 6 is fitted. In addition, also in FIGS. (1) and (J), it is also possible to form a sheet-like material on the front surface, the back surface, or whichever is the negative surface of the heat insulating layer 7a. In such a heat insulating plate 7, the thickness of the heat insulating layer 7a is hl in FIGS. 4(a) to 4(d), and the thickness of the heat insulating layer 7a is hl in FIGS. Depth h++ of g7e, (1) Notch 7 in the figure
The height h3 of f is smaller than the height H of the furring 6.

This is to form a space 8 between the existing outer wall 4 and the heat insulating board 7 when the heat insulating board 7 is installed. This space 8 functions as a flow path for the air cycle and is for diffusing and discharging moisture on the existing wall body discharged from the vent hole 5. Therefore, it functions as an air cycle to keep the wall cool in the summer and warm in the winter, and also has the added effect of preventing internal condensation within the wall and inhibiting the growth of mold and mites. In addition, the drywall material 9 is, for example, shown in Figs. 5(a) to (Ql), Figs.
As shown in Figures (a) to (e), this is a member that has male and female connecting parts, or is simply abutted with flat plates, or is roofed in a stepped manner. Forming the outer surface, decorative materials, waterproofing materials, heat insulation materials, soundproofing materials,
It functions as a fireproof material. To explain further,
The drywall material 9 is shown in FIGS. 5(a) to (q) and 6(al to (
As shown in P), a sandwich structure of the surface material 9a - core material (plastic foam, mineral fiber, gypsum board, etc.) 9b - back material 9C, or as shown in Fig. 7(a) to (81), a sandwich structure of ceramic type, It is made of concrete, ALC, ceramic, etc.Although the drywall material 9 is shown as being installed horizontally in FIG. 1, it is of course possible to install it as being installed vertically.

Next, a construction example will be briefly explained.

First, as shown in FIG. 1, a plurality of ventilation holes 5 are formed in the existing outer wall 4 on the existing wall body using a drill or the like.

Next, the furring 6 is fixed to the surface of the existing outer wall 4 using fixing tools such as nails. Next, the heat insulating layer 7a of the heat insulating board 7 shown in FIG. 4(a)
is inserted between the body edges 6, and the ear portions 7C are fixed with a fixing tool. Next, the drywall material 9 is installed using fixtures.

Although not shown in the drawings, the base and eave ceiling are formed using accessories such as drainers and siding edges.

What has been described above is only one embodiment of the outer wall repair structure according to the present invention, and the outer wall 6 is constructed as shown in FIG.
It is also possible to arrange them horizontally with an interval of <Δt=Δt' or Δt≠Δwhite, and to arrange the drywall material 9 (not shown) vertically. It is also possible to provide a waterproof sheet such as asphalt felt, terfelt, synthetic resin sheet, metal foil (Al), etc. between the drywall material 9 and the heat insulating board 7 over the entire surface. Furthermore, an ear portion 7C% groove 7e and a notch 7 that are in contact with the rim 6 of the heat insulating plate 7 shown in FIGS. 4(a) to U)
Pressure sensitive adhesive 10 on r ((shown in Figure 81, (b))
It is also possible to plant it and stick it to the trunk rim 6 during construction. Further, the upper and lower openings of the space 8 can be opened to the outside, or can be opened to the under floor at the base, and to the attic at the eaves. It is also possible to install opening/closing devices (not shown) in the upper and lower openings of the space 8 and to open and close them according to the humidity inside the wall and the humidity of indoor and outdoor air.

[Effects of the Invention] As described above, according to the exterior wall repair structure according to the present invention, there is no need to dismantle the existing exterior wall, so the number of construction steps can be omitted, and the construction period can be significantly shortened. It has the characteristic that it does not interfere with living inside. In addition, we created ventilation holes in the prefabricated exterior wall, and a continuous space between the heat insulating board and the prefabricated exterior wall, which allows the moisture inside the prefabricated wall to be diffused and discharged, preventing internal condensation. In addition to preventing corrosion of structural members such as
It can prevent the growth of mold and dust mites and greatly improve livability. Moreover, since the space between the existing outer wall and the heat insulating board functions as an air cycle path, the heat insulation properties are improved. Furthermore, since the space is insulated with heat insulating boards and drywall materials, it is not directly affected by changes in outside temperature, prevents condensation in the space, and makes effective use of the air cycle effect. . It has the following effects and characteristics.

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are a partially cutaway perspective view and an explanatory view showing an example of the exterior wall repair structure according to the present invention, and FIG.
al~(e), Figures 3fa)~(k) are explanatory views showing modified examples of ventilation holes, Figures 4(a)~fil are explanatory views showing examples of heat insulating plates, and Figure 5(a) ~(Ql, Figure 6(a) ~(ρ
), Figures 7(al to (e) are explanatory diagrams showing examples of drywall materials, and Figure 8 is an explanatory diagram showing other examples of the arrangement of the furring. Top... Ready-made Wall body, 4... Prefabricated outer wall, 5... Ventilation hole, 6... Furniture, 7... Heat insulating board, 8... Space, 9...
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Claims (1)

[Claims] (1) A prefabricated exterior wall consisting of a mortar wall or a concrete wall of a building or structure is provided with a plurality of ventilation holes penetrating the prefabricated exterior wall, and a rim is provided on the prefabricated exterior wall, and at least a gap between the rims is provided. An exterior wall repair structure characterized in that a heat insulating board is disposed on the surface of the existing exterior wall to form a void, and a drywall material is disposed on the surface of the heat insulating board.