JPH08260664A - Method of repair construction of lath mortar external wall and fixture for panel - Google Patents

Abstract

PURPOSE: To obtain excellent fire resistance by fixing a fixture for a panel on a wooden body on the outside of a lath mortar external wall, installing the ALC panel to the fixture and manufacturing a double wall. CONSTITUTION: Screw bolts 6 are fixed into the through-holes of fixtures 5 on the external surface of an existing lath mortar wall 4 nailed onto the external surfaces of wooden columns 1 and a stud 2 and a batten 3. ALC panels 7 in thickness of approximately 50mm or less are arranged in parallel in the horizontal direction successively on the flat sections of the fixtures 5, and fastened by screw nails 8. The length-breadth joint sections of the adjacent ALC panels 7 and air gap sections with the lath mortar wall 4 of opening sections are filled with a caulking material 9, and finishing execution is conducted. Accordingly, the removal of lath mortar and resumption are unnecessitated, and a new external wall can be constructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing an outer wall of a lath mortar of a wooden building, and in particular, a method of attaching an ALC thin plate to the outside of the outer wall of the lath mortar to construct a new outer wall, and to use it. The present invention relates to the structure of the fitting.

[0002]

2. Description of the Related Art As shown in FIGS. 1 and 2, the outer wall of a conventional mortar of a wooden building is a vertical wooden pillar 1 or stud 2 horizontally fixed with a ground plate 3 at a desired interval, and a waterproof paper on the outer surface thereof. Then, the lath 4a is nailed, the mortar 4 is applied to form an integral wall surface, and a finishing material is sprayed or painted as necessary for finishing. If a crack occurs in this lath mortar wall surface due to aging deterioration or a disaster, or if partial peeling occurs, as a repair method, if the crack or peeling is small, a caulking agent is applied to the cracked portion. Is repaired by injecting or applying mortar to the exfoliated part.

However, in these construction methods, not only the appearance is bad, but also the old part and the repaired part are liable to be incompletely bonded, which causes water leakage and the strength of the wall surface is lowered. Further, when the cracks or peeling are large, it is necessary to once completely remove the outer wall mortar and lath, and then perform the construction again. In this case, there is a problem that the construction period and cost are required although there is no problem described above. There is also a method of attaching a siding material to the outer surface of the outer wall mortar. In this case, there is no problem described above, but since the binding force between each panel and the body is weak, it is easily deformed and the appearance is impaired. There was a problem that it was difficult to adapt to Japanese style architecture.

[0004]

SUMMARY OF THE INVENTION The present invention is excellent in appearance, strength, fire resistance, etc., when a large crack or peeling occurs on the outer wall of a lath mortar of a wooden building, there is no need to remove the lath mortar and start over. In addition, the present invention provides a method for repairing the outer wall of lath mortar, which can shorten the construction period by the dry method, and the structure of the mounting bracket used for it.

[0005]

According to the construction method of the present invention, a panel mounting metal fitting is fixed to a wooden frame outside the outer wall of the lath mortar, and an ALC panel having a thickness of 50 mm or less is mounted on the metal fitting. Is. The structure of the metal fitting has flat surfaces facing each other in parallel at a predetermined interval in the height direction, and through holes through which bolts pass are bored at desired intervals in the length direction near the center in the width direction. Is.

[0006]

In the construction method of the present invention, the panel mounting metal fitting is fixed to the outside of the outer wall of the lath mortar to the wooden frame, and the metal fitting is a double wall in which the ALC panel having a thickness of 50 mm or less is attached. It is lightweight, has excellent strength, fire resistance, sound insulation, heat insulation, etc., has a short construction period, and does not deform. Further, the surface can be processed to use an ALC panel having an excellent design property, or by applying a paint finish or the like, a high-quality appearance suitable for Japanese-style or Western-style building can be obtained. If the ALC panel is thick, it becomes heavy, which is inconvenient for the wooden frame, and if it is too thin, the strength of the main body and the mounting strength become weak, so the thickness is preferably 50 mm or less and 30 mm or more.

Further, the metal fittings used in this method have flat surfaces facing each other in parallel at a predetermined interval in the height direction, and through holes for allowing bolts to pass through in the vicinity of the center portion in the width direction. Use the one that was drilled in Step 3 to fix the metal fittings to the wooden frame by passing bolts through the through holes, and fix the ALC panel to the mortar wall by screwing nails through the parallel flat parts of the metal fittings. Since it is sufficient, the construction is easy, a strong wall surface is configured, and the distance between the lath mortar wall and the ALC panel can be reduced. Since the metal fittings are provided with parallel flat parts, the distance between the ALC panel and the mortar wall surface is constant, and the screw nail penetrates the two flat metal plates. And sufficient mounting strength can be obtained. The plate thickness of this metal fitting is appropriately 1.6 to 3.2 mm because the ALC panel is fixed by the screw nail, and the height is such that the mounting bolt does not project and the distance between the lath mortar wall and the ALC panel is high. To reduce the size, about 10 mm is desirable.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view of an outer wall surface modified by the construction method of the present invention, and FIG. 2 is a transverse sectional view. FIG. 3 is a perspective view of the metal fitting used in this embodiment. The metal fitting 5 has a thickness of 1.6 mm, a height of 10 mm, and a pair of parallel flat surfaces 5a facing each other. Through holes 5b having a diameter of 7 mm are formed at intervals of 600 mm in the longitudinal direction. The conventional lath mortar wall 4 is formed on the outer surface of the base plate 3 nailed to the wooden columns 1 and the studs 2, and the window sash 10 is attached to the opening of the wall surface. On the outside of the lath mortar wall 4, there is an AL having a thickness of 37 mm, a width of 600 mm and a length of 2,200 mm.
The C panels are attached in multiple rows in parallel in the horizontal direction to form a lateral wall.

In order to mount the ALC panel 7, first, the metal fitting 5 is vertically fixed to the outer surface of the lath mortar wall 4 at a position corresponding to the pillar 1 and the stud 2 with a screw bolt 6 penetrating the through hole 5b. To do. Then, the ALC panels 7 are sequentially arranged in parallel in the horizontal direction and fixed to the flat portion 5a of the metal fitting 5 with screw nails 8. At that time, a recess is provided on the surface of the ALC panel 7 so that the head of the screw nail 8 is Do not stick out. Finally, the caulking material 9 is filled in the vertical and horizontal joints of the adjacent ALC panel 7 and the gap between the opening and the lath mortar wall 4, and the exterior wall is repaired if necessary by painting or other finishing. To do.

4 (A) to 4 (C) are cross-sectional views of other embodiments of the metal fittings, and the cross-sections of the metal fittings 51 to 53 are C-shaped, rectangular-shaped and U-shaped, respectively. . Each of the metal fittings has a plate thickness of 1.6 mm, a height of 10 mm, and a pair of flat surfaces facing each other in parallel. A width of 100 mm is provided in the vicinity of the central portion at intervals of 600 mm in the length direction and through holes having a diameter of 7 mm. Has been drilled. Further, the metal fittings 52, 53 are also provided with a through hole having a diameter through which the head of the bolt can be inserted, at a position facing the through hole. The construction method using these metal fittings is the same as that of the metal fitting 5 described above, and each metal fitting 51 to 53 may be fixed to the pillar 1 with the bolt 6, and the ALC panel 7 may be attached to these metal fittings with the screw nail 8.

[0011]

As described in detail above, according to the method of the present invention, the metal fitting for mounting the panel is fixed to the outside of the outer wall of the lath mortar and is fixed to the wooden frame.
Since the LC panel is attached to the double wall, the ALC panel is lightweight, has excellent strength, fire resistance, sound insulation, heat resistance, etc., and has a short construction period and does not deform. Further, the surface can be processed to use an ALC panel having an excellent design property, or by applying a paint finish or the like, a high-quality appearance suitable for Japanese-style or Western-style building can be obtained.

Further, the metal fittings used in this method have flat surfaces facing each other in parallel at a predetermined interval in the height direction, and through holes for allowing bolts to pass through are formed at desired intervals in the length direction near the center portion in the width direction. Use the one that was drilled in Step 3 to fix the metal fittings to the wooden frame by passing bolts through the through holes, and fix the ALC panel to the mortar wall by screwing nails through the parallel flat parts of the metal fittings. Since it is sufficient, the construction is easy, a strong wall surface is configured, and the distance between the lath mortar wall and the ALC panel can be reduced. Since the metal fittings are provided with parallel flat parts, the distance between the ALC panel and the mortar wall surface is constant, and the screw nail penetrates the two flat metal plates. And sufficient mounting strength can be obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a wall surface modified by a method of the present invention.

FIG. 2 is a cross-sectional view of a wall surface modified by the method of the present invention.

FIG. 3 is a perspective view of a metal fitting of the present invention.

4 (A) to (C) are cross-sectional views of a wall surface using a metal fitting of another embodiment of the present invention.

[Explanation of symbols]

 1 pillar 2 stud 3 field plate 4 lath mortar wall 5,51,52,53 metal fitting 6 screw bolt 7 ALC panel 8 screw nail 9 caulking material

Claims (2)

[Claims] 1. A panel mounting metal fitting is fixed to a wooden frame on the outside of the outer wall of the lath mortar, and the metal fitting has a thickness of 50 m.
A method for repairing the outer wall of lath mortar, which is characterized by attaching an ALC panel of m or less. 2. In the height direction, there are flat surfaces facing each other in parallel at a predetermined interval, and through holes through which bolts pass are formed at desired intervals in the length direction near the center in the width direction. Panel mounting metal fittings.