JP2000017747A - Exterior heat-insulating structure and wooden house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure treated for termite prevention excellent in durability and reliability by burying a copper plate or the like in a heat insulating material consisting of foamed plastics laid on the circumference of the foundation and outer wall of a wooden house so as to extend over the whole thickness direction. SOLUTION: Heating insulating materials 2 and 6 consisting of a foamed body of polystyrene, hard urethane, phenol or the like are closely fitted and stuck to a skeleton in the raised part circumference of a concrete foundation 1 and the circumference of an outer wall. At this time, a termite-preventing member 3 consisting of a metal plate such as copper plate, stainless steel plate, or galvanized steel plate or a synthetic resin plate is buried in the foamed heat insulating material 2 so as to cover the whole thickness direction. The advance of the termite (larva) penetrated into the foamed heat insulating material 2 from the ground is prevented by the termite preventing member 3 so as not to reach a wooden sill 4, whereby the damage by termite can be prevented. According to this, a highly heat insulating and highly airtight wooden house can be provide without polluting the environment (spraying of chemicals) or damaging the appearance of the building.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material, and more particularly to a heat insulating material for a wooden house provided with a foamed plastic heat insulating material as a foundation and an outer periphery of an outer wall, and more particularly to a heat insulating material for termite prevention or termite control. The present invention relates to a structure and a wooden house having the outer lining and heat insulating structure.

[0002]

2. Description of the Related Art Conventionally, in wooden houses, high heat insulation and
Various measures have been taken to ensure high airtightness and improve durability and living environment. For example, in a cold region house, a basic heat insulation method has been adopted in which the underfloor space is thermally insulated from the external space by insulating the foundation, and the underfloor space is used as a space inside the building.

[0003] In such a basic heat insulating method, a foamed plastic heat insulating material is frequently used as a heat insulating material. On the other hand, according to reports of termite damage to houses with basic insulation, foamed plastic insulation itself does not serve as termite feed, but termites are randomly searched for cellulose, hemicellulose and water contained in wood that can be feed. There is a habit of moving through the soil, and if there is foamed plastic insulation material during this movement, termites may pass through the inside. In this way, when termites pass between the foamed plastic insulation materials, they cannot be observed directly from the outside, so the intrusion of termites cannot be easily found, and the damage by termites cannot be prevented beforehand. there were.

Conventionally, as a countermeasure against termites in the above-described basic heat insulation method, a so-called termite-proof sheet impregnated with or mixed with a termite-controlling agent is attached to the entire surface of the soil to prevent the termites from entering. It was a common construction method to prevent it.

[0005] As measures against termites in a general construction method different from the basic heat insulation method, Japanese Utility Model Publication No. 4-213372 and Japanese Utility Model Publication No. 7-35932 disclose mounting a copper-based metal plate between a foundation and a base. Techniques have been disclosed for killing termites or preventing them from entering the base due to the toxicity of copper patina. Japanese Utility Model Laid-Open No. 57-17308 and Japanese Utility Model Laid-Open No. 59-96351 disclose a technique of disposing a dovetail plate on the inner circumference or inner circumference of a foundation.

[0006]

However, the conventional measures against termites have the following problems.

(1) When a termite sheet is used, its service life is generally said to be 5 to 10 years, and is not semipermanently effective. In addition, its use inside the soil is expected to drastically decrease its effectiveness due to the effects of rainwater and other microorganisms, and there is also a possibility of environmental pollution due to chemical injury.

(2) When a foundation structure in which a copper-based metal plate is mounted between a foundation and a base as described in Japanese Utility Model Publication No. 4-21372 and Japanese Utility Model Publication No. Although it is possible to avoid direct intrusion from the foundation to the base, termites that have penetrated the heat insulating material on the outer peripheral surface of the foundation enter the wall without penetrating the foundation, causing damage to the structural material of the wall and reversing from the wall. However, it may not be effective in preventing such cases.

(3) In the method of disposing the dovetail plate as disclosed in Japanese Utility Model Laid-Open No. 57-17308 and Japanese Utility Model Laid-Open No. 59-96351, it is sufficient if the dovetail return plate does not protrude significantly from the outer peripheral surface of the foundation. Therefore, a large space is required for installing the dovetail plate. In addition, such a dovetail plate that protrudes greatly from the outer peripheral surface of the foundation impairs the appearance of the building, and also has a problem in that it is damaged when passing around the building and involves danger.

The present invention has been made in view of the above circumstances, and has been found to be excellent in durability, reliability, environmental pollution and the appearance of a building in a wooden house exterior insulation structure in which a foamed plastic insulation material is stretched around a foundation and an outer wall. It is an object of the present invention to provide a termite countermeasure structure that does not have a problem of impairing the termites.

[0011]

The configuration of the present invention which has been achieved to achieve the above object is as follows.

That is, a first aspect of the present invention is that in a wooden house lining heat insulating structure in which a foamed plastic heat insulating material is laid on the outer periphery of a foundation and an outer wall, a member having termite prevention performance is provided on the outer periphery of the foundation. A lining thermal insulation structure characterized by being provided so as to cover the whole of the above-ground portion of the foamed plastic heat insulating material in the thickness direction and to be provided in contact with the upper surface or the outer peripheral surface of the foundation.

In the first heat insulating structure of the present invention, it is preferable that the member having termite prevention performance is formed of a metal plate containing copper.

The first liner heat insulation structure of the present invention allows termites to enter the heat insulating material provided on the outer periphery of the foundation, but has a termite prevention performance provided at a predetermined position. The member attempts to prevent further intrusion.

[0015] A second aspect of the present invention is that in a wooden house lining heat insulating structure in which a foamed plastic heat insulating material is stretched on the outer periphery of a foundation and an outer wall, a member having termite prevention performance is provided on the outer periphery of the foundation. A lining thermal insulation structure is provided on at least an outer peripheral surface of a submerged portion of a thermal insulator.

In the second liner insulation structure of the present invention, the member having termite prevention performance may be provided continuously from the outer peripheral surface to the bottom surface of the foamed plastic heat insulating material provided on the outer periphery of the foundation. preferable.

The second liner insulation structure according to the present invention is intended to prevent termites from entering the heat insulating material provided on the outer periphery of the foundation with a member having termite prevention performance. It is also preferable to appropriately combine the first and second lining thermal insulation structures of the present invention. Further, the floor may be made of a concrete floor, or the floor may be made of a wooden floor and the soil surface under the floor may be made of concrete. Is also preferred.

A third aspect of the present invention is the first or second aspect of the present invention.
It is located in a wooden house with a thermal insulation structure.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a description will be given, with reference to the drawings, of a first thermal insulation structure of the present invention.

FIG. 1 shows an example of the basic structure of the first heat insulating structure of the outside lining of the present invention.

As shown in FIG. 1, foamed plastic heat insulating materials 2 and 6 are provided on the outer periphery of the concrete foundation 1 (the outer periphery of the rising portion of the foundation 1) and the outer periphery of the outer wall, respectively.

As the material of the foamed plastic heat insulating materials 2 and 6, those having excellent heat insulating properties, no water retention, and excellent durability are desirable. For example, polystyrene foam, hard urethane foam, phenol foam, etc. Is mentioned.
The thickness of the foamed plastic heat insulating material is determined by the heat insulating performance required from the design environment temperature for each region and the like, and is usually 20 mm to 100 m by using the above materials.
m, but is not limited to this. .

On the ground portion of the foamed plastic heat insulating material 2 provided on the outer periphery of the foundation 1, a member 3 having termite prevention performance (hereinafter referred to as "termite prevention member 3") is provided so as to cover the entire thickness thereof. ) Is provided. The termite prevention member 3 is provided in contact with the upper surface of the foundation 1 (see FIG. 1A) or the outer peripheral surface of the foundation 1 (see FIG. 1B). The term “prevention of termites” refers to preventing termites from entering, and does not mean even terminating them.

As a material of the termite preventing member 3, a material that is at least resistant to termite damage is used, such as a copper plate, a stainless steel plate, a galvanized steel plate, and other metal plates (including a sheet-like plate), or the like. A thermally advantageous synthetic resin plate (including a sheet-like one) or the like can be used. In the case of using a synthetic resin material, it is more effective if the Rockwell hardness is R50 or more as described in Japanese Utility Model Laid-Open No. 57-17308.

Among these materials, a metal plate containing copper, such as a copper plate, is also particularly preferable because it has a function of killing termites due to the toxicity of copper patina or a bactericidal effect of copper ions, and is capable of controlling termites. . The term "termite control" refers to both prevention and eradication, which means that termites are prevented from entering and further killed.

When a metal plate is used as the termite preventing member 3, its thickness is usually about 0.1 mm to 2 mm.
When using a synthetic resin plate, its thickness is usually 0.5 m.
It is about m to 5 mm, but is not limited to this.

According to the first heat-insulating structure of the present invention having the above-described structure, a sufficient measure against termites is realized. This will be described below.

In general, termites inhabit the ground, and when there is no foamed plastic insulation material 2, a termite path is formed along the surface of the concrete foundation 1 to ascend, reach the base 4, and further post on the base 4. It rises to 5 and erodes the wooden member, causing corrosion. Since such a contact ant path can be visually recognized, damage by termites can be prevented to some extent.

On the other hand, when the foamed plastic heat insulating material 2 is laid on the outer periphery of the concrete foundation 1, the termites enter the foamed plastic heat insulating material 2 from the soil and rise, so that it is difficult to detect the invasion of termites from the outside. And the damage may be further increased. In particular, if lining insulation is performed not only on the foundation but also on the outer wall portion, the termites may further rise in the foamed plastic heat insulating material 6 on the outer wall portion, and there is a risk that damage will occur over a wider area including the pillar 5 and the like. .

On the other hand, in the case of the first liner insulation structure of the present invention, one end of the termite prevention member 3 is installed in close contact with the concrete foundation 1, so that In order for the invading termites to invade the base 4, there is no choice but to penetrate the concrete foundation 1 (this case is unlikely) or climb over the termite prevention member 3.

However, the foamed plastic insulation material 2
In the inside, the free progress of termites is hindered, and because the termite prevention member 3 is provided over the entire thickness of the foamed plastic heat insulating material 2, it is difficult for the termites to climb over the termite prevention member 3. In particular, when a copper plate or the like having a termite controlling function is used as the termite preventing member 3, the termite controlling function is extremely effective in combination with the fact that the free progress of termites in the foamed plastic heat insulating material 2 is hindered. To prevent the invasion of termites more reliably.

As described above, termites have the habit of moving in the soil in search of components that can serve as bait, and if foamed plastic heat insulating material is present during the movement in the soil, it enters the interior. However, the present inventor has not experienced an example in which termites or termites penetrated the air-insulating material directly from the air without passing through the soil.

According to such experience, in the case of the outer insulation structure in which the foamed plastic heat insulating material is provided not only on the foundation but also on the outer periphery of the outer wall as in the present invention, the termites (larvae) are transferred to the foamed plastic heat insulator. Intrusion of termite prevention member 3
Is limited to the inside of the foamed plastic heat insulating material 2 below, and it is unlikely that the foamed plastic heat insulating material above the termite prevention member 3 enters the inside. Also, due to the habit of termites who prefer dark places, it is unlikely that the termite prevention member 3 will come out of the foamed plastic heat insulating material 2 after hitting the termite prevention member 3, and once they go out from the above experience. It can be said that the termites do not rise on the outer surface of the foamed plastic heat insulating material and re-enter the inside of the foamed plastic heat insulating material above the termite prevention member 3.

Further, although termites have a habit of moving in the soil in search of components that can serve as bait, in the structure in which the foamed plastic heat insulating material 6 is also provided on the outer peripheral surface of the outer wall as in the present invention, the base 4 The termites are maintained in a sufficiently dry state, so that the progress of the termites due to their habits can be effectively prevented. Has been realized.

In the example shown in FIG. 1, a plate-like member is used as the termite prevention member 3, but the shape of the termite prevention member 3 is not limited to this. For example, as shown in FIG. A desired shape such as a U-shaped one or a U-shaped cross-section as shown in FIG. 3 can be selected.

When the flat termite preventing member 3 is provided in contact with the outer peripheral surface of the foundation 1 as shown in FIG. 1B, a gap is easily formed between the termite preventing member 3 and the concrete foundation 1. It may be a way. On the other hand, in the case of using an L-shaped or U-shaped termite prevention member, the termite prevention member can be brought into contact with the concrete foundation 1 on the surface, so that there is little danger of a gap, which is preferable in terms of termite countermeasures. The width of the bent portion where the termite prevention member 3 having an L-shape or a U-shape or the like closely adheres to the base 1 is sufficient to be about 2 cm to 6 cm, but is not limited thereto.

When the termite prevention member 3 is brought into contact with the outer peripheral surface of the concrete foundation 1, the termite prevention member 3 can be attached to the concrete foundation 1 later. It is preferable to perform construction in terms of termite measures. This allows
Termite prevention member 3 and foamed plastic insulation material 2 and foundation 1
Can be more securely adhered to each other, and it is possible to prevent the occurrence of a gap that becomes a path of the termites.

When the termite prevention member 3 is brought into contact with the upper surface of the concrete foundation 1, the termite prevention member 3 is retrofitted to the concrete foundation 1. In this case, for example, as shown in FIG. 4, it is preferable from the standpoint of termite countermeasures that the termite prevention member 3 is provided between the airtight packing material 8 laid below the base 4 and the foundation 1. Thereby, the termite prevention member 3 and the foundation 1 can be more securely adhered to each other, and the above-mentioned gaps serving as the termite passage can be prevented.

In the first heat insulating structure of the present invention,
When a material that is likely to become a thermal bridge such as a metal plate is used as the termite prevention member 3, it is preferable to protect the outside of the termite prevention member 3 with a thermal bridge prevention tape 7 as shown in FIG. It is to be noted that the thermal bridge prevention tape 7 is more effective if a tape for preventing termites (for example, a product manufactured by Ikari Chemical Co., Ltd./antitermite tape) is used.

The bent portion of the termite prevention member 3 outwardly downward in FIGS. 3A and 4B more securely blocks the path of the termites, and the termites pass over the outside of the termite prevention members 3. It reduces the danger of entering the upper insulation.

Further, as in the present invention, the concrete foundation 1
In the case of a lining heat insulating structure in which the foamed plastic heat insulating material 2 is provided on the outer periphery of the above, when a material that may be deteriorated by ultraviolet rays, such as a polystyrene foam, is used as the foamed plastic heat insulating material 2, the outer surface of the ground portion is mortared. Finishing is performed, or an exterior material such as a calcium silicate plate or a flexible board is stretched. In such a case, a mortar finish or an exterior material is stretched on the outer periphery of the termite prevention member 3, and the danger of termites climbing over the outside of the termite prevention member 3 and entering is extremely small.

Next, a second thermal insulation structure of the present invention will be described with reference to the drawings.

FIG. 5 shows an example of the basic structure of the second heat insulating structure of the present invention.

As shown in FIG. 5, foamed plastic insulation materials 2 and 6 are provided on the outer periphery of the concrete foundation 1 and the outer wall, respectively, as in the first embodiment of the present invention. Is provided with a member 9 having termite prevention performance (hereinafter referred to as "termite prevention member 9").

When the termite preventing member 9 is used in the form of a plate or sheet as shown in FIG.
A hard synthetic resin plate or a stainless steel plate having excellent corrosion resistance and durability and high surface hardness (Rockwell hardness of R50 or more) is particularly preferable. As the synthetic resin material, for example, polycarbonate, polypropylene, ABS, HIPS,
Hard vinyl chloride, high-density polyethylene, polyester and the like can be mentioned.

When a termite preventing member 9 is made of, for example, a stainless steel plate, its thickness is usually 0.1 mm to 0.1 mm.
Hard synthetic resin plate (or sheet) of about 5mm
When using, the thickness is usually 0.1 mm to 0.5
mm, but is not limited to this.

According to the second outer insulation structure of the present invention, the termite prevention member 9 is uniformly and continuously laid at the portion of the foamed plastic heat insulating material 2 that comes into contact with the soil.
Termites can be prevented from entering the foamed plastic heat insulating material 2. Further, when a metal plate or a hard synthetic resin plate having a particularly high surface hardness is used as the termite preventing member 9, it becomes difficult for the termites to form a contact termite path, and the termites rise along the surface of the plate-like body 8. Can be prevented.

As shown in FIG. 5 (a), when the termite prevention member 9 is stretched over the entire outer peripheral surface of the foamed plastic heat insulating material 2, the termite prevention member 9 is deteriorated by ultraviolet rays of the foamed plastic heat insulation material 2. It can also play the role of prevention and can omit the mortar finish as described above.

According to the second thermal insulation structure of the present invention, FIG.
As shown in (b), the termite prevention member 9 can be stretched only in the soil portion. In such a case, it is preferable to stretch the lath net 10 on a portion (ground portion) not in contact with the soil, which facilitates the subsequent application of the finishing mortar 11. The termite prevention member 9 and the lath net 10
Can be integrated with the foamed plastic heat insulating material 2 and simultaneously with the concrete without being retrofitted to the concrete foundation 1.

In the second heat insulation structure of the present invention, FIG.
It is preferable to extend the termite prevention member 9 continuously from the outer peripheral surface to the bottom surface of the foamed plastic heat insulating material 2 as shown in FIG. Can be prevented. In this case, as shown in FIG.
It is more effective to extend the termite preventing member 9 that is bent twice as shown in FIG.

When the termite preventing member 9 which has been bent in advance as shown in FIG. 6 is used, the termite preventing member 9 can be nailed to the foundation of the concrete foundation, and the foamed plastic heat insulating material 2 is temporarily placed so as to stand on its own. In addition, it is also possible to prevent a termite from invading through the gap caused by the unevenness of the concrete ground.

In the second thermal insulation structure of the present invention, the termite preventing member 9 is not limited to a plate or sheet, but may be a block as shown in FIG. As the block-shaped termite prevention member 9, for example, a concrete block, a resin block, or the like can be used. When termite prevention member 9 is made of concrete, it can be made of cast-in-place concrete.

As described above, the first and second embodiments of the present invention
Although the lining heat insulation structures described above can be used individually to prevent termites, it is also preferable to combine both structures as shown in FIG. 8, for example. Incidentally, FIG.
8A is an example in which the structures shown in FIG. 5A are combined, and FIG. 8B is an example in which the structures shown in FIG. 3A and FIG. 5B are combined.

In the case of the structure as shown in FIG. 8, the termite repelling effect has a two-stage effect as understood from the above description. That is, in the first stage, the termite prevention member 9 prevents the invasion of termites from the soil into the foamed plastic heat insulating material 2, and even if the termites intrude, in the second stage, the termite prevention member 3 prevents further invasion. Termites can be prevented and termite measures can be taken very reliably.

In the case of the exterior insulation including the basic insulation as in the present invention, the underfloor ventilation holes formed by the general construction method are not formed, so that termites rarely enter the underfloor space from outside the ground surface. However, it is conceivable to penetrate below the floor of the concrete foundation 1 through the ground and below the bottom surface.

In such a case, as shown in FIG.
As exemplified in (b), it is preferable that the floor is a wooden floor set 13 and the soil surface under the floor is a concrete retainer 14. Thus, invasion of termites from under the floor can also be prevented, and comprehensive termite measures are taken. In FIG. 9, reference numeral 15 denotes a moisture-proof sheet, and reference numeral 16 denotes a heat insulating material.

In the wooden house employing the above-described lining thermal insulation structure of the present invention, high insulation and high airtightness are ensured, the living environment is improved, and especially, damage to the base and the like by termites is prevented and the durability is improved. High-quality wooden house is realized.

[0058]

As described above, according to the thermal insulation structure of the present invention, a termite prevention structure which is excellent in durability and reliability and has no problems such as environmental pollution and damage to the appearance of the building is realized. You. In addition, by adopting such an exterior heat-insulating structure in a wooden house, a highly durable wooden house with high heat insulation and high airtightness and a countermeasure against termites is realized.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of a first lining thermal insulation structure of the present invention.

FIG. 2 is a cross-sectional view showing another example of the first lining thermal insulation structure of the present invention.

FIG. 3 is a cross-sectional view showing another example of the first lining thermal insulation structure of the present invention.

FIG. 4 is a cross-sectional view showing another example of the first lining thermal insulation structure of the present invention.

FIG. 5 is a cross-sectional view illustrating an example of a second liner heat insulation structure of the present invention.

FIG. 6 is a cross-sectional view showing another example of the second liner heat insulation structure of the present invention.

FIG. 7 is a cross-sectional view showing another example of the second lining thermal insulation structure of the present invention.

FIG. 8 is a cross-sectional view showing an example in which the first and second lining heat insulating structures of the present invention are combined.

FIG. 9 is a cross-sectional view showing an example of a lining thermal insulation structure of the present invention in combination with a concrete slab and a wooden floor combination.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete foundation 2 Foam plastic insulation material 3 Termite prevention member 4 Base 5 Column 6 Outer wall insulation material 7 Thermal bridge prevention tape 8 Airtight packing material 9 Termite prevention member 10 Lath net 11 Finishing mortar 12 Soil concrete floor 13 Wooden flooring 14 Concrete holder 15 Moisture-proof sheet 16 Insulation material

Claims (8)

[Claims] An outer heat insulating structure for a wooden house in which a foamed plastic heat insulating material is stretched on the outer periphery of a foundation and an outer wall, wherein a member having termite prevention performance is provided on a foam plastic insulating material provided on the outer periphery of the foundation. A lining heat insulating structure characterized by being provided so as to cover the entire ground portion in the thickness direction and to be in contact with the upper surface or the outer peripheral surface of the foundation. 2. The heat insulation structure according to claim 1, wherein the member having termite-preventing performance is made of a metal plate containing copper. 3. In a lining insulation structure of a wooden house in which a foamed plastic insulation material is stretched on the outer periphery of a foundation and an outer wall, a member having termite prevention performance is replaced by at least soil of a foamed plastic insulation material provided on the outer periphery of the foundation. A lining heat insulating structure, which is provided on an outer peripheral surface of a middle portion. 4. The termite-preventing member is provided continuously from the outer peripheral surface to the bottom surface of the foamed plastic heat insulating material provided on the outer periphery of the foundation.
2. The heat insulating structure of the above. 5. A lining heat insulating structure in which the lining heat insulating structure according to claim 1 or 2 and the lining heat insulating structure according to claim 3 or 4 are combined. 6. The lined thermal insulation structure according to claim 1, wherein the floor is a soil concrete floor. 7. The thermal insulation structure according to claim 1, wherein the floor is made of a wooden floor, and the soil surface under the floor is made of concrete. 8. A wooden house having a lined heat insulating structure according to claim 1.