JPH0227051A - Exterior fitting process - Google Patents

Abstract

PURPOSE:To perform fine and sure repair of cracks generated on a wall surface by removing the overlapped cut margins of a decoration sheet with a knife, and coating a resin solution over the surface of decoration sheet including the cut place. CONSTITUTION:A soft filler 13 finer than #20 mesh and a hydration reaction type inorganic adhesive 14 are mixed and kneaded together and coated over an outer wall 11 to form substrate 15, and two decoration sheets 19, 19' whose rear surfaces are coated with a resin solution as an adhesive 16 are adhered laminately to the surface of this substrate 15. Thus a wall is formed. The overlapping margins 17, 18 of these decoration sheets 19, 19' at their side edges are cut by pressing a knife 20, and overlapped cut margins 21, 22 are removed. Thereafter the resin solution is coated over the surfaces of the decoration sheets 19, 19' including the cut place 23, and thus a surface film 24 is formed. This enables fine waterproofing of the knife cut part, and cracks generated on the wall surface can be repaired with fine workmanship.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an exterior construction method mainly used for reinforcing aged mortar walls.

[Conventional technology]

In order to reinforce aging exterior walls such as mortar walls with cracks, construction work is carried out such as filling the cracks with caulking material or coating the entire surface with a thick layer of mortar.

Even if the material is filled with molding material or a thick layer of mortar is applied, cracks will appear on the surface after a while.

Therefore, in order to completely reinforce a wall with cracks, it is necessary to cover the entire surface with building materials such as slate boards or galvanized iron boards, or by gluing a waterproof sheet.

[Problem to be solved by the invention]

However, slate boards and galvanized iron boards have a very different appearance from mortar walls, and if they are installed on mortar walls, there is a risk that the overall balance will be lost and the appearance of the building will be spoiled.

In addition, the width of the tarpaulin sheet is usually around 1 m, which is too short compared to the size of the wall surface. Therefore, it is necessary to join the sheets together, but in that case, the thickness becomes thicker due to the overlapping, and the surface Because it protrudes into the wall, it spoils the appearance of the building.

For this reason, it is possible to stack the left and right side edges of the tarpaulin sheet overlapping each other and insert a knife into the overlapping area to cut the overlapped edges in the same way as installing interior wallpaper, but rainwater will seep through one of the cuts, causing rain leaks. In addition, it is difficult to avoid disadvantages and inconveniences such as the blade of the knife used at that time being damaged and the cut being uneven.

[Purpose of the invention]

Therefore, the present invention is based on i! 1) Waterproofing film I will be applied to the aged wall surface without damaging the overall appearance of the building before renovation, and the resulting cuts will be thoroughly waterproofed to ensure that cracks that have formed on the wall surface will not reappear on the surface. The purpose is to repair it neatly so that it will not be damaged.

(Structure of the Invention) That is, in the exterior construction method according to the present invention, a soft filler 13 finer than 20 meshes and a hydration-reactive inorganic adhesive 14 are kneaded and coated on an outer wall 11, and a base layer 15 is laminated thereon. This means using a resin solution as the adhesive 16 on the surface of the base layer to exclude hard particles. Therefore, even river sand or crushed stone can be used as a filler if it is finely ground to about 100 mesh. There isn't.

However, preferred soft fillers are fibrous materials such as fiber powder and inorganic materials with low hardness such as calcium carbonate.

The finer the soft filler, the better, preferably 4
0 mesh and around 100 mesh are used.

Portland cement 1 and other cements may be used as the hydration-reactive inorganic adhesive, and limes such as anhydrous calcium acid and calcium aluminate may also be used.

Cosmetic sheet 1-19 has a glass fiber nonwoven fabric as a base 25, and an adhesive is applied thereon to form granular aggregate with a grain size of 0.5 to 2 grains or scale-like aggregate 26 with a thickness of 0.1 to 1 grain. These aggregates 26 are preferably prepared by using a resin composition containing a large amount of filler.

〔Effect of the invention〕

Press the knife 20 into the overlapping allowances 17 and 18 on the side edges, remove the overlapping cutting allowances 21 and 22, and then apply a resin solution to the surface of the decorative sheet, including the overlapping allowances 21 and 22. This is characterized in that a surface film 24 is formed by processing.

When coating and laminating the base layer 15, the outer wall 11 may be coated with a resin solution in advance to form the waterproof layer 12 as an MI layer.

For the resin solution of the waterproof layer 12, adhesive 16, and surface film 24, a water-resistant resin such as acrylic resin or epoxy resin is used. It is preferable to use a self-crosslinking type film.

Soft filler 13 and inorganic adhesive 1 forming base layer 15
The kneading composition of 4 may preferably contain a water-soluble adhesive such as Metroz or carboxymethyl cellulose, which has water-retaining properties, and an emulsion latex resin which has water resistance.

Here, the term "soft filler" refers to materials that are coarser than 20 mesh, such as river sand or crushed stone, and are more likely to cause knife blade damage (1) The hydration reaction of the inorganic adhesive 14 progresses gradually and is completely terminated. During this time, the base layer 15 is in a soft, semi-hardened state, and the soft filler 13 behaves to avoid the knife edge 27 during overlapping cutting. Because it is a fine material, it does not cause damage to the knife blade, and its behavior does not create groove-like cutting marks in the base layer 15, and the cut of the cosmetic sheet 1- is also sharp and neatly aligned in a straight line. It will be done.

(2) The base layer 15 to be laminated on the surface of the outer wall 11 can be coated thicker than lus by troweling, and it gradually hardens due to hydration reaction, and the coating thickness remains the same as the thickness of the base layer. Become.

Therefore, even if a thin waterproof layer 12 of about 0.1 to 0.3 m is laminated on the surface of the outer wall 11 before coating and laminating the base layer 15 and then applying the decorative sheet 1-19, the waterproof layer 1
It is possible to perform overlapping cutting of the decorative seam +49 without cutting 2 with the cutting edge 27 of the knife.

(3) The resin solution 24 of the surface film penetrates and closes the cutting marks 28 of the base layer created by the knife and the joint 23 of the cosmetic sheet 1-, and then the base layer 15 completes the hydration reaction and hardens. , the outer wall 11 has a waterproof layer 13 with no gaps,
The base layer 15, the cosmetic sheet 1-19, and the surface film 24 are coated in multiple layers, resulting in complete waterproofing.

b1) Since the TIE sheet 1-19 is made with a stretchable fabric or a plus deck film as the base 25, it is possible to stretch the outer wall 11 even when it is pasted over the crack 29 in the wall 11. The decorative sheet 1-19 does not crack due to stress.

In this way, according to the present invention, the exterior wall can be repaired as thinly and neatly as if it were spray painted, and no cracks would occur afterward, and unlike spray painting, the repair material would scatter and spread around the surface. The present invention is convenient for repairing dilapidated exterior walls without causing inconvenience.

[Brief explanation of the drawing]

Figure 1 is an enlarged view of a portion of the outer wall surface during the overlap cutting process of the decorative sheet, Figure 2 is an enlarged sectional view of the outer wall surface at the overlap cutting location of the decorative sheet, and Figure 3 The figure is an enlarged sectional view of the surface portion of the repaired outer wall. 11... Outer wall, 13... Filler ~ 15... Foundation layer, 17, 18... Side edge, 20... Knife , 23...Cut location, 25...Base, 27...Blade edge, 29...Crack. 12...Waterproof layer, 14...Inorganic adhesive, 16...Adhesive, 19. ... Decorative sheet, 21, 22... Kang!, 24... Surface film, 26... Aggregate, 28... Cut scar,

Claims (1)

[Claims] Soft filler 13 finer than 20 mesh on outer wall 11
and hydration-reactive inorganic adhesive 14 are kneaded and coated to form base layer 1.
5 is laminated, and a resin solution is applied to the surface of the base layer with an adhesive 16.
Two decorative sheets 19 and 19' applied to the back side
The decorative sheet 19 is glued and laminated with the side edges 17 and 18 overlapped, and a knife 2 is inserted into the overlapping margins 17 and 18 of those side edges.
0 is pressed and cut, and the overlapping cutting allowances 21 and 22 are
After removing the decorative sheet, a resin solution is applied to the surface of the decorative sheet including the cut portion 23 to form a surface film 24.