JPH0941509A - External-facing execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an external facing (high heat-insulating and high airtight structure) having heat-insulating structure and airtight structure at a stretch more minutely regarding the external-facing execution method of a building and a structure. SOLUTION: An external facing material 2 is formed on the surface side of a body 1, an airtight material 3 is shaped on the boundary of the body 1 and the external facing material 2, a release sheet is stuck on a surface on the indoor side of the body 1, and an in-place foaming type synthetic resin foam 5 is sprayed into space 6 surrouned by the bodies 1 and the external facing material 2 while a section between the bodies 1 is filled with the foam 5 so as to form the space 6. The release sheet is peeled, and an interior finish material 7 is executed and formed on the surface on the indoor side of the body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior construction method for buildings and structures, and more particularly to an exterior that can form an exterior having a heat insulating structure and an airtight structure (highly insulating / airtight structure) all at once. It relates to the construction method.

[0002]

2. Description of the Related Art A conventional heat insulating wall is formed with a heat insulating material such as glass wool between the skeletons, a heat insulating board is formed on the skeleton surface, and a space is formed between the skeleton and the exterior material to prevent dew condensation. , Etc., the airtight wall has a polyethylene sheet or other airtight sheet formed on the body surface, and the heat insulation / airtight wall has a heat insulating board and a polyethylene sheet or other airtight sheet formed on the body surface. ,
Etc.

However, due to dew condensation, the glass wool becomes wet and rags, and the initial heat insulation performance could not be expected with this wet rag. In addition, there is a problem in airtightness in the structure constructed by only the heat insulation board. Furthermore, due to the formation of the space, dew condensation water is not stored between the skeleton and the exterior material, but the heat insulation can be fully utilized. There wasn't. In addition, there is a problem in workability such that two members, that is, a heat insulating board and a sheet such as a polyethylene sheet must be installed. Therefore, in order to solve these drawbacks, a structure as shown in FIGS. 12A and 12B has also been proposed.

[0004]

However, as shown in FIG.
In the structure of (a), since the in-situ foaming resin a is sprayed from the outdoors to the space between the heat insulating board b and the batten c, it depends on the weather (rain, wind, snow, etc.) and is adjacent in a dense area. Since it cannot be installed because it is scattered in the house and the heat insulating board b such as styrene board is exposed inside, when a fire occurs indoors, a flame runs between the frames e to spread the fire. There is a risk of promoting it, and in addition, batten c
Since the on-site foaming resin a adheres to the surface of the batten c due to its low value, it is necessary to eliminate unevenness (unevenness of the fixed base) and to remove it before the exterior material d is constructed. there were.

Further, in FIG. 12 (b), since the in-situ foaming resin a is sprayed indoors, it is not affected by the weather,
It was necessary to construct batten and there was a problem in workability.
Further, the in-situ foaming resin a penetrates into the surface of the frame e on the outdoor side, and the foaming pressure deforms the exterior material d to the front side, greatly impairing the appearance. Further, since the in-situ foaming resin a is attached to the indoor side surface of the frame e, it is necessary to eliminate unevenness (unevenness of the fixed base).

[0006]

In order to eliminate such drawbacks, the present invention forms an exterior material on the front side of the body and forms an airtight material at the boundary between the body and the exterior material, and The release sheet is attached to the surface, the on-site foaming synthetic resin foam is sprayed into the space surrounded by the body and the exterior material, and the space is filled between the bodies, and then the release sheet is peeled off. By providing an interior material on the inner surface, the heat insulating property, the earthquake resistance, the airtightness, the workability, and the waterproof property are improved, and an exterior construction method for preventing dew condensation is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The exterior construction method according to the present invention will be described in detail below with reference to the drawings. 1 (a), (b), FIG. 2 and FIG. 3 are a sectional view and a perspective view showing an example of a wall formed by the exterior construction method according to the present invention, and an explanatory view showing members, and 1 is a body 2 is an exterior material, 3 is an airtight material, 4 is a release sheet, 5 is a synthetic resin foam of in-situ foaming type, 6 is a space,
7 is an interior material.

The skeleton 1 is composed of a wooden base made of main pillars, studs, rafters, etc., a wall base made of steel frame base made of H type steel, lip groove type steel, etc., or a roof base.

The exterior material 2 is, as shown in FIG. 2, a metallic siding material in which a core material 2c is formed between a metallic surface material 2a and a back surface material 2b, or a ceramic siding material (not shown), an ALC plate, It is made of a PC board or the like, or a roof material is made of a metal roof material, straw, a new roof tile, or the like. These exterior materials 2 have properties such as weather resistance, corrosion resistance, heat insulation, waterproofness, fire resistance, soundproofing, sound insulation, chemical resistance, and durability.

The airtight material 3 is formed of caulking material, paint, resin adhesive, etc. at the boundary between the frame 1 and the exterior material 2.

The airtight material 3 covers the boundary between the body 1 and the exterior material 2, the synthetic resin foam 5 of the in-situ foaming type penetrates between the body 1 and the exterior material 2, and the foaming pressure causes the exterior body to be exteriorized from the body 1. This is to prevent the material 2 from peeling off.

The release sheet 4 is as shown in FIG. 3, and is a single-sided adhesive tape made of gum tape, cloth tape, synthetic resin tape, or the like. Of course, anything that can be peeled off later may be used. Further, as the release sheet 4, a release agent may be formed on the surface side (the surface on which the in-situ foaming type synthetic resin foam 5 is attached). In this case, the release sheet 4 is not peeled off, and the in-situ foaming synthetic resin foam 5 is peeled from the surface of the release sheet 4. Furthermore, a release agent can be formed as the release sheet 4.

The on-site foaming type synthetic resin foam 5 is formed by using a synthetic resin foam formed by spraying the stock solution on site. Hard urethane foam is the main material, but flame retardant class 2 and flame retardant class 3 (JI
S-A-1321) Acceptable products include phenol polyol + isocyanate + flame-retardant material (hereinafter simply referred to as phenol urethane). Of course, there are non-CFC (no CFCs are used) synthetic resins, and those made of phenolic resins to make them flame-retardant.

Since the in-situ foaming synthetic resin foam 5 is used to be foamed by being sprayed on site as described above, as shown in FIGS. 1 (a) and 1 (b), the frame 1 and the exterior material 2 are used.
Since there is a space 6 between them, it can be filled without any gaps and can be provided with heat insulation and airtightness all at once, so a structure with high heat insulation and high airtightness can be easily formed in a short period of time, and also the function of preventing dew condensation. Also has. Further, this space 6 can be used as a ventilation path for an air cycle in a house.

The space 6 is an air cycle space or a space for releasing indoor humidity to the outside, and is for improving the durability of the house.

Here, a construction example of the exterior construction method according to the present invention will be briefly described. First, as shown in FIG. 4A, the exterior material 2 is attached to the body 1 through a waterproof sheet (not shown).
Install on top.

After that, an airtight material 3 made of a polyethylene sheet is provided so as to cover a boundary portion between the body 1 and the exterior material 2 as shown in FIG.
It is formed as shown in FIG.

Thereafter, as shown in FIG. 4 (b), a release sheet 4 is attached to the indoor side surface of the body 1. As a matter of course, the in-situ foaming synthetic resin foam 5 is attached to a portion where it is necessary to prevent the synthetic resin foam 5 from being attached.

Thereafter, as shown in FIG. 4C, an in-situ foaming synthetic resin foam 5 made of phenol urethane is sprayed onto the space 6 between the frame 1 and the exterior material 2.

An enlarged view of this portion is as shown in FIG. 5, and the in-situ foaming synthetic resin foam 5 is attached also to the side surface of the body 1 and the release sheet 4.

After the spraying of the in-situ foaming type synthetic resin foam 5 is completed, the release sheet 4 is removed to remove unnecessary portions as shown in FIG. There is no such thing.

When the removal of the release sheet 4 is completed, finally, as shown in FIG. 6 (b), the interior material 7 is applied to complete the operation. Of course, the construction order of the exterior material 2 and the interior material 7 is not particularly limited.

[0023]

[Other Embodiments] The above description is merely one embodiment of the exterior construction method according to the present invention, and it can be formed as shown in FIGS. 7 (a) to 7 (c). That is, FIG.
(A) shows a waterproof sheet 8 formed between the skeleton 1 and the exterior material 2, and is made of, for example, asphalt felt, asphalt roofing, windproof / moisture permeable sheet (sheet that does not allow wind to pass moisture), or polyethylene sheet. It is made of a plastic sheet or the like. This is mainly for improving waterproofness and airtightness, and secondarily water (moisture) to the on-site foaming synthetic resin foam 5.
It is formed to prevent the intrusion of.

FIG. 7B shows a double-sided tape 9 formed between the skeleton 1 and the exterior material 2. By completely adhering the connection portion between the skeleton 1 and the exterior material 2, the double-sided tape 9 is removed from the connection portion. This is for preventing the invasion of wind and water and improving the airtightness.

FIG. 7 (c) shows an exterior construction method for the roof part, in which the frame 1 is a rafter and the inner space 6 is an attic. Of course, the exterior material 2 is a roof material.

8 (a)-(i) -FIG. 10 (a)-
(F) shows other examples of the exterior material 2,
It shows a metal-based siding material in which a core material 2c is formed between a metal surface material 2a and a back surface material 2b, a metal roof material, and the like.

11 (a) and 11 (b) show another embodiment of the exterior structure formed by the exterior construction method according to the present invention. FIG. 11 (a) shows the release sheet 4 on a part of the braces 10. The release sheet 4 is removed after forming the in-situ foam type synthetic resin foam 5, and the exposed surface 10 a is formed in the braces 10. By doing so, it is possible to smoothly release the water from the muscle connection 10.
Further, in FIG. 2B, the side surface of the skeleton 1 is also entirely covered with the in-situ foaming synthetic resin foam 5.

[0028]

As described above, according to the exterior applying method of the present invention, a highly heat insulating and highly airtight exterior applying method can be easily formed in a short time. The construction period can be shortened because the on-site foaming synthetic resin foam can be formed regardless of the weather such as rain and wind. Since the on-site foaming synthetic resin foam is sprayed from indoors, construction is possible even in dense areas (where the boundaries are narrow). When a fire-retardant synthetic resin foam with high flame-retardant properties (flame-retardant 2nd grade, flame-retardant 3rd grade) is formed inside, even if a fire occurs from inside, the fire will propagate through the space inside the body No need to worry about fire spread. Before the in-situ foaming synthetic resin foam is formed, the removal work is easy because the release sheet is formed to prevent the adhesion to unnecessary parts. Moisture (condensation) does not occur on the body, and performance can be maintained for a long time. Due to the formation of the airtight material, the in-situ foaming synthetic resin foam does not enter between the body and the exterior material, and the body and the exterior material are not separated from each other. There are features and effects such as.

[Brief description of drawings]

FIG. 1 is a cross-sectional view and a perspective view showing a construction state of an exterior construction method according to the present invention.

FIG. 2 is a cross-sectional view showing an exterior material used in the exterior construction method according to the present invention.

FIG. 3 is a perspective view showing a state before attachment of a release sheet used in the exterior construction method according to the present invention.

FIG. 4 is a cross-sectional view illustrating a construction order of an exterior construction method according to the present invention.

FIG. 5 is a cross-sectional view illustrating a construction order of the exterior construction method according to the present invention.

FIG. 6 is a cross-sectional view for explaining the construction sequence of the exterior construction method according to the present invention.

FIG. 7 is a cross-sectional view showing another embodiment of the exterior construction method according to the present invention.

FIG. 8 is a cross-sectional view showing another embodiment of the exterior material used in the exterior construction method according to the present invention.

FIG. 9 is a cross-sectional view showing another embodiment of the exterior material used in the exterior construction method according to the present invention.

FIG. 10 is a cross-sectional view showing another embodiment of the exterior material used in the exterior construction method according to the present invention.

FIG. 11 is a perspective view showing another embodiment of the exterior construction method according to the present invention.

FIG. 12 is a sectional view showing a conventional example.

[Explanation of symbols]

 a In-situ foaming resin b Insulation board c Batten d Exterior material e Body 1 Body 2 Exterior material 2a Surface material 2b Back material 2c Core material 3 Airtight material 4 Release sheet 5 In-situ foaming synthetic resin foam 6 Space 7 Interior material 8 Waterproof sheet 9 Double-sided tape 10 Brace 10a Exposed surface

Claims (1)

[Claims] 1. An exterior material is formed on the front side of the skeleton, an airtight material is formed at the boundary between the skeleton and the exterior material, and a release sheet is attached to the indoor side surface of the skeleton, which is surrounded by the skeleton and the exterior material. It is possible to spray the on-site foaming type synthetic resin foam into the space and fill it so that there is a space between the skeletons, then peel off the release sheet, and form the interior material on the indoor side surface of the skeleton. A characteristic exterior construction method.