JP2963863B2 - Exterior finishing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a method of finishing a building, in which a large number of joints such as ALC boards, asbestos cement boards, inorganic siding boards, concrete blocks, etc. are quantitatively generated. It is. Therefore, the field of application can be said to be the construction industry.

[0002]

2. Description of the Related Art Conventionally, in a case where a large number of joints such as an ALC plate and an inorganic siding plate are necessarily generated, the joints are filled with cement mortar or the like when the joints are erased to make them appear on a large wall. Painting was done. However, in this method, cracks occur due to the movement of the joints due to the movement of the building, which is aesthetically and waterproof.

[0003] In addition, a method of erasing joints by pasting porcelain tiles is also performed. However, it is necessary to insert a large number of expansion joints for absorbing the movement. There was a risk of peeling off when attaching a heavy object to an ALC plate or the like having a lower strength than that of the above.

[0004]

Problems to be Solved by the Invention It is difficult to erase joints to form a large wall by a conventional finishing method for an ALC plate, an asbestos slate plate, an inorganic siding plate, or the like which generates a large number of joints quantitatively. there were. This is the problem that the present invention seeks to solve. Another object of the present invention is to provide an outer wall finishing method that not only erases joints but also keeps long-term stable performance on outer wall waterproofing.

[0005]

According to the present invention, a large-sized wall surface can be formed by sticking a flexible sheet applicable to the outdoors to an outer wall surface. At the same time, when the water permeability of the sheet itself (according to JIS A6910) is 0.5 ml / 24 hr, waterproofness can be obtained. The substrate to which the present invention is directed is
It has a fixed size such as an ALC board, an asbestos cement board, an inorganic siding, a concrete block board or the like, and means that a joint is quantitatively generated. In addition, as a method for causing the sheet to be adhered to the outer wall surface to follow the movement of joints accompanying the movement of the building, there is a method to make the outer wall sheet stretchable, the adhesive of the exterior sheet deforms after curing There is a method that has the ability to reduce the movement of the ground joint.

[0006] According to the experimental results, when the elongation percentage of the exterior sheet is 2% or less, the movement of the building causes breakage or warpage, and when it is more than that, there is no abnormality.
When the exterior sheet had no extensibility, the elongation after curing of the adhesive was 5% or more, which was effective for the movement. That is, if the elongation percentage of the exterior sheet is 2% or more, or the elongation percentage after curing of the adhesive is 5% or more, the movement of the building can be followed.

Next, regarding the exterior sheet, for example, the composition is such that an acrylic synthetic resin emulsion is used as a binder in a nonwoven fabric, and a filler, a coloring pigment, and various additives are added thereto, and a water-based paint is formed. A substrate having a pattern formed thereon by spray coating, molding, pressing, printing, or the like is used. This pattern is preferably designed so that the left and right or top and bottom ends are connected to hide the joint when the exterior sheets are arranged and pasted.

[0008] In addition to the above examples, the base material of the exterior sheet may be water resistance, weather resistance, dimensional stability, adhesiveness, or the like.
What is necessary is just a flexible sheet-shaped thing which has adhesiveness. In addition, when the exterior sheet is attached to the outer wall, it is effective to provide an overlapping portion of 5 mm or more in consideration of waterproofness, and when the overlapping portion is 5 mm or less, the overlapping portion is determined by the movement of the building. There is a possibility that the part may have poor adhesion.

Examples of the adhesive for attaching the exterior sheet having such a configuration to the base include those using synthetic resins such as acrylic resin, vinyl acetate, and polyurethane, and polymer cement mortar. Incidentally, the joint portion of the base may be filled in advance with a sealing material, a putty material, a resin-containing mortar, or the like, but if the method of the present invention is used, the joint portion is completely covered with the exterior sheet. It is not always necessary to fill.

[0010]

According to the method of the present invention, it is easy to erase the apparent joints on the base such as the ALC plate and to make the wall surface large, and at the same time, the final finish. As a result, various designs can be applied to the outer wall surface composed of the ALC plate, the asbestos slate plate, the inorganic siding plate, the concrete block, and the like, whose appearance is restricted by the joints. In addition, the method according to the present invention can significantly shorten the construction period as compared with the conventional spray painting and tiling work.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention was carried out on a mason wall on which a calcium silicate plate was adhered as a base by phase rolling. The width of the joint was 10 mm and the depth was 5 mm,
The joint was not filled. As an exterior sheet,
Acrylic resin paint (black) on polyester non-woven fabric
Was coated with a roll coater, and a white elastic paint was applied thereon so as to form a small-tile tiled pattern. And it stuck on the wall surface with an acrylic resin type adhesive. The finished wall surface could be seen as a large wall without feeling siding joints compared to before the construction.

Next, in order to evaluate the adaptability of the exterior sheet to the joint movement caused by the movement of the building, an ALC plate of 60 cm × 3 m × 10 cm was laterally moved by 5 mm.
The two sheets, two in the longitudinal direction, were attached to a steel frame, and the condition of the exterior sheet and the ALC plate accompanying the interlayer displacement was observed. In addition,
The attachment of the ALC plate was performed by the insertion muscle construction method, and a static in-plane direction interlayer displacement was applied. The combinations of the exterior sheets and the adhesives tested were as shown in Table 1 below, and the test results of Examples 1 to 8 and Comparative Examples 1 to 4 are shown in Table 1.

The exterior sheet was prepared by coating a non-woven fabric with an acrylic resin paint. The elongation of the sheet itself was adjusted by changing the elongation and tensile strength of the paint. Although an acrylic resin was used as the adhesive, the elongation was adjusted by changing the glass transition point and the pigment volume concentration (PVC) of the resin.

[0014]

According to these test results, if the elongation of the sheet is 2% or more or the elongation of the adhesive is 5% or more, there is no abnormality in appearance even if a crack occurs in the ALC plate.

Further, a water permeability test based on the method of JIS A6910 was performed. As a test body, Example 1 and Comparative Example 5 were used. In Comparative Example 5, a white sand-wall paint was used in place of the white elastic paint of Example 1 in producing an exterior sheet. The surface tile patterns of the test specimens were both large enough for the water permeability test. The result of the water permeability test was 0.1 ml in Example 1, and in Comparative Example 5, the water in the funnel was completely exhausted and measurement became impossible.

[0017]

According to the present invention, it is possible to easily finish a large waterproof wall on a base material which can be considered only a wall surface utilizing joints such as an ALC plate, an asbestos cement plate, an inorganic siding plate, and a concrete block. A surface can be formed.

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04F 13/00

Claims (3)

(57) [Claims] An outer wall is a member for quantitatively generating joints such as an ALC plate, an asbestos cement plate, an inorganic siding plate, a concrete block, and the like. A method for finishing an exterior, comprising attaching a sheet for exterior having a pattern, being flexible, and having a water permeability of 0.5 ml / 24 hr or less. 2. The method for finishing an exterior according to claim 1, wherein an exterior sheet having an elongation of 2% or more is used. 3. The method for finishing an exterior according to claim 1, wherein the elongation after curing of the adhesive of the exterior sheet is 5% or more.