JP2963864B2 - 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 exterior sheet is attached, a waterproof portion is provided by providing an overlapping portion of 5 mm or more. When the overlapping portion is 5 mm or less, the overlapping portion may have poor adhesion due to the movement of the building. The base material to which the present invention is applied is one having a fixed size such as an ALC board, an asbestos cement board, an inorganic siding, a concrete block board or the like, and generating joints quantitatively. In addition, as a method for causing the sheet to be attached to the outer wall surface to follow the movement of joints accompanying the movement of the building, a method of giving the outer wall sheet an extensibility,
There is a method in which the adhesive of the exterior sheet has a deformability after being cured and alleviates the movement of the base 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, considering the waterproofness of the sheet itself, its water permeability (JI
(Depending on SA6910) should be 0.5 ml or less.

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 is performed by the insertion bar construction method, and the interlayer displacement in the static in-plane direction is 1/120 rad. (Radian) was added. The combinations of the exterior sheets and the adhesives that were tested were as shown in Table 1 below, and Examples 1 to 8 and Comparative Example 1 were used.
Test results of Comparative Example 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, the durability of the exterior sheet was compared between Example 1 and Comparative Example 6 according to the presence or absence of the overlap margin. In Example 1, the overlapping margin in which a polyester non-woven fabric was coated with an acrylic resin-based paint was applied to the sheet adjacent to the sheet.
Comparative Example 6 while having a width of 20 mm on each side
In this example, there is no overlap margin in the first embodiment, and an elastic paint having a tiled pattern is applied up to 3 mm from the edge of the sheet. As in the previous test, when the small tiles were pasted on the ALC board base so that the tiled patterns were regularly arranged and interlayer displacement was applied, there was no problem in Example 1, but in Comparative Example 6, the ALC board had Partially floating occurred at the seam of the exterior sheet just above the seam.

[0017]

According to the present invention, it is possible to easily form a finished surface of a large wall on a substrate which can only be considered a wall surface utilizing joints such as an ALC plate, an asbestos cement plate, an inorganic siding, a concrete block, and the like. Can be.

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

Claims (1)

(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 flexible exterior sheet having a pattern with an overlap margin of 5 mm or more.