JP3005406B2 - Exterior wall finishing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for finishing an outer wall of a building and a method for finishing the same, and its use is in the field of construction.

[0002]

2. Description of the Related Art Conventionally, when a fixed-size object such as an ALC plate, an inorganic siding plate, an asbestos cement plate, or a block is used as a main component of an outer wall, it is very difficult to make the surface look like a single wall or a large wall. Was difficult. In the method that has been performed in the past, sealing material and the like are packed into the recesses at the joints between the boards and the boards or the blocks and the blocks, and the flattened,
Further, the finish coating material is coated with uniform water absorption by a base adjustment material or the like.

[0003]

In the conventional large-wall construction method, the work of adjusting the base including the sealing material is troublesome, and when the base moves, the force often appears concentrated at the joint. In some cases, cracks occurred on the surface. For this reason, there is a method disclosed in Japanese Patent Application Laid-Open No. Sho 60-175657 as a partial joint treatment method.
In this method, only the fiber woven fabric or tape sandwiched by the bonding agent stretches, and it is unknown how much the fiber stretches as a whole. The present invention proposes a method of covering not only a joint portion but also the entire base with a sheet.

[0004]

The base sheet used in the present invention has an elongation of 2% or more in a sealed state. The base sheet is attached to the entire surface of the outer wall, and the base sheet is placed on the base sheet. I try to paint the finish coating material. Hereinafter, the configuration of the present invention will be described in order.

[0005] The object of the building which intends to use the finish of the present invention is a newly constructed ALC plate, an inorganic siding plate, an asbestos cement plate, a block structure, etc.
It can be used for RC and PC buildings, and is also used when renovating these buildings.

In the present invention, when there is an irregularity of 1 mm or more on the underlayer, it is required to interpose the underlayer adjusting material. However, even if the base sheet is stuck on the entire surface, the irregularity appears on the surface. Because. A cement-based or polymer-cement-based composition, which is conventionally known and has a large number of commercially available products, is applied to the base adjustment material by brushing, ironing, spraying, or the like.

Next, a description will be given of a base sheet to be attached to a base using an adhesive or a pressure-sensitive adhesive. The base sheet is a sheet in which a sheet selected from a nonwoven fabric, a woven fabric, a glass cloth, and a synthetic paper is used as a core material and a sealing material or a coating material for the sealing is applied. As the fiber material used for the woven or nonwoven fabric, polyester, vinylon, polyethylene, nylon or the like is used.

A base sheet is obtained by applying a filler material or a filler paint to both sides (or one side) of these fiber products (including paper). The coating amount of such the sealing material is selected from among the usual ^{50g / m 2 ~300g / m 2} . As the composition of the filler material, acrylic resin, PVC resin or the like or an emulsion thereof is used as the binder, and titanium oxide, calcium carbonate powder, talc, clay, diatomaceous earth, etc. are used as the pigment and filler components. What added additives, such as a solvent, a solvent, a admixture, a dispersant, a viscosity modifier, and a thickener, is used.

If the base sheet has an elongation of 2% or more in a state where the core material and the sealing material are integrated, the base sheet can follow the movement of the skeleton and cracks occur on the surface. Never. However, when the finish coating material forms a hard coating film, for example, a reaction-curable resin, the elongation performance of the base sheet is hindered, and cracks may appear on the surface. Base sheet elongation is JIS L10
96. 6.14.1 Elongation rate of “6.14 stretchability of stretchable woven fabric” of “General fabric test method” Evaluated by the value measured by the A method (constant speed extension method), 5 to 25% There is no difficulty in making the product, and there is no gloss or tack on the surface and it is easy to use. If the elongation is less than 2%, the ability to follow a crack is lacking, and the problem of breaking the base sheet occurs.

Examples of the adhesive or pressure-sensitive adhesive used for attaching the base sheet are shown below. Examples of the resin-based or rubber-based material include those having a composition of recycled rubber, ethylene-vinyl acetate, vinyl acetate-acrylate, acrylate, and methacrylate.
A material obtained by adding a small amount of a filler and a pigment to this is also used. In addition, a mixture of a cement called a polymer cement type and a synthetic resin emulsion or latex, which is kneaded, is used.

As the finish coating material to be coated on the base sheet, "waterproofing material for roof" in JIS A6021 and "waterproof multilayer coating material" in JIS A6910 are excellent in terms of crack resistance. ing. However, when a pattern for generating joints is formed quantitatively, a finish coating material other than a material having a small elongation such as a cement type or a reaction hardening type can often be used.

As a means for generating or forming joints quantitatively, there is a method of applying a finish coating material together with joint pattern paper. This is done by applying a pattern that has been molded into a joint pattern, a geometric pattern, a strip, or any other shape and that has been subjected to backside pressure-sensitive adhesive treatment, onto a base such as a wall surface on which a pattern is to be formed, and then painting a finish coating material. The pattern paper is removed immediately after coating or after the finish coating material is cured. Examples of the joint pattern paper include Japanese Utility Model Publication No. 23569 and Japanese Utility Model Publication No. 2-44871.
And Japanese Utility Model Publication No. 4-15484.

FIG. 1 of the accompanying drawings shows a structural example of the present invention by a sectional view. FIG. 1 shows an ALC plate 5 as a base, in which a cross-sectional view has a reinforcing bar 6 in a skeleton, and a V-shaped joint is filled with a backup material 7 and a sealing material 8. A base adjustment material 1 is applied to the entire surface of the ALC plate, and a base sheet 3 is attached via an adhesive layer 2. Then, on the base sheet, a coating film 4 of a finish coating material finished using joint paper is also formed. The concave portion formed on the surface of the coating film is a joint 9 having a joint pattern.

[0014]

The base sheet in the method or structure according to the present invention has an elongation property, and thus has an effect of preventing occurrence of cracks in the finish coating material. In addition, since the base sheet is stuck on the entire surface of the base, a base having a substantially constant water absorption can be obtained. Further, in the case of the joint method using joint pattern paper, the base sheet expresses joint color as joint parts.

[0015]

EXAMPLE In Example 1, the present invention was applied to a building using ceramic siding as a base of a wall. The dimensions of the siding alone were 12 × 455 × 3030 mm .

[0016] without a particular underlying adjustment to the foundation of this, it was attached to the base sheet using an adhesive of the resin system. The dimensions of the base sheet were an effective area of 60 × 45 cm, and a 3 cm width overlap was provided. The composition of the adhesive is as shown in Example 1 shown in Table 1 below. The base sheet is made of a nonwoven fabric made of vinylon and having a basis weight of 70 g, and a matte emulsion paint and a dark gray color on both sides.
g / m ² coated and dried. The elongation of this base sheet was measured at a grip distance of 20 cm, and
5%.

[0017]

TABLE 1 Example Formulation 1 Synthetic resin emulsion 30 parts by weight Calcium carbonate 55 parts by weight Inorganic foam 5 parts by weight Additive 2 parts by weight Water 8 parts by weight Total 100 parts by weight

As a finish, an elastic stucco using an acrylic rubber-based resin as a binder was coated on the entire surface at a required amount of 4 to 5 kg / m ² . One year has passed since this building was painted in May 1992, but no cracks occurred.

In the second embodiment, the present invention is applied to a building having an ALC structure. ALC size is 50
× 600 × 1800 mm, width 2
A V-shaped joint having a depth of 0 mm and a depth of 10 mm was formed. Fill the V joint with backup material made of foam plastic,
Further, the joint portion was filled with an acrylic emulsion-based sealing material, and the joint was flattened. Then, in order to eliminate the step between the panels of the ALC plate itself and suppress the suction of the ALC plate,
In order to make the suction uniform and to secure the open time of the adhesive of the base sheet to be stuck thereon, a base adjustment material called "cement filler" of polymer cement was applied by a trowel.

Next, the base sheet in the form of a roll having a width of 60 cm was entirely adhered to the base using a polymer cement type adhesive while having a laminated portion having a width of 3 cm. The composition of the adhesive was as shown in Example 2 shown in Table 2 below. The base sheet itself was 80 g / m2 of a matte emulsion paint and beige color on a 50 g polyester nonwoven fabric. ^Two coated and dried ones were used. The elongation of this base sheet is 20 c
m was 10%.

[0021]

Table 2 Example formulation 2 Portland cement 20 parts by weight Mineral fiber 2 parts by weight Silica sand 50 parts by weight Acrylic synthetic resin emulsion 15 parts by weight Water 13 parts by weight Total 100 parts by weight

Then, a joint pattern paper having a tiled joint pattern was pasted on the base sheet after being laid out in advance. From the top of the pattern paper, a coating material with an aggregate coloring that forms a pseudo-stone pattern is simultaneously applied to two colors by a double-headed gun for 5 to 6 times.
The required amount of kg / m ² was sprayed, and immediately after coating, one upper layer of the pattern was peeled off, and after the coating material was tightened, the lower layer of the pattern was removed. Through the above steps, a finished surface of a stone-pasted pattern having the joint portion as the color of the base sheet was obtained on the wall surface. Six months have passed since the construction of this wall in February 1993, but no cracks occurred.

In the comparative examples, a case where a base sheet is not used and a case where a base sheet having low elongation is used are used as examples. First, in Comparative Example 1, the base material was not adhered to the siding groundwork of Example 1 and the undercoating material of the joint color was applied to form the pseudo-stone pattern used in Example 2 together with the pattern paper. I got a stone pasted pattern. In the building having this finished surface, cracks occurred from the joint part of the foundation about three months after construction.

Next, in Comparative Example 2, a base sheet having small elongation was formed on the same base as that of Comparative Example 1, and the base sheet was adhered to the base sheet, and then the pattern coating material of Example 2 was applied. The base sheet having a small elongation was capped by applying an epoxy resin-based putty on a glass mesh and a basis weight of 30 g at a rate of 100 g / m ^2, and had an elongation of 1.5% after drying. The timing of the use of the pattern paper and the removal of the peeling pattern were also the same as in Example 2. In the building having this finished surface, cracks occurred from the joints of the foundation 5 months after the construction.

[0025]

By using the method or structure of the present invention, the following effects can be obtained. First, large wall surfaces, which were conventionally difficult or laborious, can be obtained relatively easily. The resulting large wall surface has a uniform base,
Finished surface without unevenness and without gloss unevenness due to differences in suction. In addition, since the base sheet has elasticity, the base sheet follows the deformation of the base, and the base sheet is alleviated, thereby preventing the finish coating material from cracking. When the finish coating material has a joint pattern, the base sheet also serves as a joint.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a finishing structure according to the present invention. A
When the invention was applied to an LC plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base adjustment material 2 Adhesive layer 3 Base sheet 4 Coating film 5 ALC board 7 Backup material 8 Sealing material 9 Joint

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-27051 (JP, A) JP-A-52-137131 (JP, A) JP-A-59-72349 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) E04F 13/02 E04F 13/08-13/18

Claims (2)

(57) [Claims] 1. When there is unevenness of 1 mm or more on the surface of the outer wall
If necessary, apply a base adjustment material and then apply nonwoven fabric, woven fabric, glass
Seat selected from cloth and synthetic paper as core material
Base material with elongation of 2% or more
If the back has been coated with adhesive,
Or paste it after applying the adhesive, and put it on the exterior
Finishing of exterior wall characterized by painting finish coating material
Method. 2. When there is unevenness of 1 mm or more on the surface of the outer wall.
If necessary, apply a base adjustment material and then apply nonwoven fabric, woven fabric, glass
Seat selected from cloth and synthetic paper as core material
Base material with elongation of 2% or more
If the back has been coated with adhesive,
Or, after applying the adhesive, paste it and join it
Patterns, geometric patterns, strips, etc.
Paste the paper pattern processed with surface adhesive, finish coating material for exterior
Paint and remove the pattern, or even clear
A method for finishing an outer wall, characterized by applying paint.