JPH0424367A - External wall reforming method for building - Google Patents

Abstract

PURPOSE:To shorten the term of construction by bonding each siding on the mortar finished external wall of a building by the use of moisture cure type one-pack urethane adhesives. CONSTITUTION:After a foundation throating 3 is nailed on the lower end peripheral section of a mortar wall 16, the back surface of each siding 2 is coated with moisture cure type one-pack urethane adhesives, so that an adhesive layer 1 is thereby formed. Just after adhesives are applied, each siding 2 is pressed on the specified position of the mortar wall 16 so as to be fixedly bonded via the adhesive layer 1. By this constitution, reform is thereby accomplished in a short term of construction.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for renovating the outer wall of a building, and more specifically, to directly attach siding to the mortar-finished outer wall of the building using a specific adhesive. This article relates to a method of renovating an exterior wall.

[Conventional technology]

Conventionally, the methods for remodeling mortar-finished exterior walls of buildings such as wooden houses include (1) stripping off the mortar surface, reinforcing the base pillars and studs, and then attaching ceramic siding, etc. to the base; (2) There is a method of renovating the exterior wall by leaving the mortar-finished exterior wall as it is and nailing metal siding directly onto the exterior wall from the outside.

In addition, it has traditionally been done to bond interior and exterior materials to walls, etc. using adhesives, and examples of such crimping methods include gypsum board crimping with GL bond, and quick-drying bond. There are adhesive bonding methods such as Ashale (surface decorated carunium silicate board) and Glasal (special flexible board).

(Problems to be Solved by the Invention) In the construction method (1) above, since the mortar surface is stripped off, the construction period is longer and the cost is also higher.

In addition, in method (2) above, in order to firmly hold the siding, it is necessary to accurately drive nails into the pillars and studs that are the base of the mortar, but since the base cannot be seen from the mortar surface, There are many cases where it is beaten,
There is a risk of the siding falling off. In particular, when using ceramic siding, which is heavier than metal sanding, there is a high risk of it falling off.

Furthermore, the above-mentioned crimping method has a problem in that the interior and exterior materials are not completely bonded unless they are supported day and night after being attached.

Therefore, an object of the present invention is to provide a method for remodeling the exterior wall of a building, which allows siding to be firmly and easily attached to the mortar-finished exterior wall, and also allows the mortar-finished exterior wall to be renovated in a short period of time and at low cost. There is a particular thing.

[Means to solve the problem]

As a result of various studies, the present inventors have found that the above object can be achieved by directly attaching siding to a mortar-finished exterior wall using a specific adhesive.

The present invention has been made based on the above findings, and provides a method for remodeling exterior walls of buildings, which is characterized in that siding is attached to mortar-finished exterior walls of buildings using a moisture-curing one-component urethane adhesive as an adhesive. This is what we provide.

[Function] According to the building exterior wall renovation method of the present invention, siding can be firmly and directly attached to a mortar-finished exterior wall using an adhesive.

[Example] Hereinafter, one embodiment of the building exterior wall renovation method of the present invention will be described with reference to the drawings.

Fig. 1 is a partial vertical cross-sectional view of the exterior wall after renovation by the construction method of the present invention, and Fig. 2 is a partial vertical cross-section of the mortar-finished exterior wall before renovation.
12 is a base fixed on the foundation concrete 11;
3 is a pillar, 14 is a lath board nailed to the outside of the pillar 13, 15 is a lath net stretched over the lath board 14, 16 is a mortar wall painted on the lath net 15, and 17 is a This is mortar applied to the outside of the foundation concrete 11.

Therefore, in order to implement the exterior wall renovation method of the present invention on the mortar-finished exterior wall shown in FIG. 2, first, as shown in FIG. After installation, an adhesive is applied to the back surface of the siding 2 to provide an adhesive layer 1.

The amount of the adhesive applied is usually about 350 to 400 g/po.

Immediately after applying the adhesive, the siding 2 is pressed against a predetermined location on the mortar wall 16 and successively adhered to the mortar wall 16 via the adhesive layer 1.

When attaching the siding 2, it is preferable to remove oil, moisture, and debris from the surface of the mortar wall 16 in advance, but since the recesses on the surface can be filled with adhesive, there is no need to particularly repair them. do not have.

After pasting, leave it to cure for about 24 hours, the adhesive will completely harden, and the siding 2 will become the mortar wall 16.
Fixed.

In this way, as shown in FIG. 1, the mortar finished outer wall can be renovated with the siding 2.

In the above embodiment, the adhesive is applied in a layered manner, but the adhesive may be applied in dots, lines, nets, etc., as long as the siding is firmly adhered to the adhesive.

In addition, in consideration of the initial adhesion effect of the adhesive, nailing may be used when pasting the siding with the adhesive.In particular, metal siding (weight: 3.5 kg) may be used as siding.
When using ceramic siding (weight: approximately 11.5 kg/m), which is heavier than the siding (approximately 11.5 kg/m), it is preferable to nail it. It is sufficient to nail about 5 nails per sheet.

Accordingly, the present invention uses a moisture-curing one-component urethane adhesive as the adhesive, and the moisture-curing one-component urethane adhesive is made of a polyisocyanate 7-tourethane polymer having an isocyanate group at the molecular end. is the main raw material, and is mixed with solvents, fillers, additives, etc.

Specifically, the moisture-curable one-component urethane adhesive is, for example, Orton Atover 10 manufactured by Auto Kagaku Kogyo ■.
Commercially available products such as 00 (trade name) can be used.

Further, as the siding used in the present invention, both ceramic siding and metal siding can be used, and the effects of the present invention are particularly noticeable when heavy ceramic siding is used. . Note that ceramic siding is an exterior wall material made of cement, calcium silicate, gypsum, slag, or a mixture thereof as a base material, mixed with chemically treated wood chips or glass wool, etc., and molded into a predetermined shape.

〔Effect of the invention〕

According to the building exterior wall renovation method of the present invention, siding can be firmly and easily attached to a mortar-finished exterior wall, and the mortar-finished exterior wall can be renovated in a short period of time and at low cost.

[Brief explanation of the drawing]

FIG. 1 is a partial longitudinal cross-sectional view of the outer wall after renovation by the construction method of the present invention, and FIG. 2 is a partial longitudinal cross-sectional view of the mortar-finished outer wall before renovation. 1. Adhesive layer 2. Siding 16/Mortar wall Figure 1 Figure 2

Claims (1)

[Claims] A renovation method for the exterior wall of a building that is characterized by attaching siding to the mortar-finished exterior wall of the building using a moisture-curing one-component urethane adhesive as an adhesive.