JP3527654B2 - Basic heat insulation structure with ant-proof function and its construction 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 basic heat insulating structure having a termite prevention function, a construction method thereof, and the like.

[0002]

2. Description of the Related Art In recent years, as the heat insulation and airtightness of homes have progressed, the use of a basic insulation method of applying a heat insulating material to the inside or outside of a foundation has become active instead of a floor insulating method of applying a heat insulating material to the floor. Has been done.

An example of the heat insulating structure is shown in FIG. In the figure, a foundation 12 is placed on the ground 10. The foundation 12 has an inverted T-shaped cross-sectional shape in which the upright portion 12b rises from the center of the horizontally extending bottom portion 12a, and the bottom portion 12a and the lower half of the upright portion 12b are buried in the soil. Then, the base 1 is placed on the upper surface 12c of the upright portion 12b.
4 is installed, and the soil concrete 16 is poured in the inner area (the right area in FIG. 1) of the foundation 12.

Here, in a normal foundation structure, a finishing wall 20 made of mortar or the like is installed on the outside of the upright portion 12b via a lath 18, but in the structure shown in the drawing, the lath 18 and the foundation upright are arranged. The heat insulating material 22 is interposed between the outer surface of the portion 12b and the lower surface of the heat insulating material 22 contacts the upper surface of the base bottom portion 12a, and the upper surface of the heat insulating material 22 is substantially the same as the upper surface 12c of the upright portion 12b. It is located at the height of.

[0005]

Since the termite, which is an enemy of the house, has darkness as its range of action, when the heat insulating material 22 does not exist outside the foundation 12, it crawls from the outside of the foundation to the base 14 side. It won't come up. However, when the heat insulating material 22 is applied to the outside of the foundation as shown in the figure, the heat insulating material 22 is generally made of foamed resin such as expanded polystyrene, expanded polyethylene, expanded polyurethane, etc. Since it is capable of being eroded, there is a risk that termites 23 leading to the base 14 may be formed as a result of the termites eroding the heat insulating material 22 from the portion buried in the soil. is there.

In addition to the case where the heat insulating material 22 is applied to the outside of the foundation as described above, for example, the heat insulating material 22 is applied to the inside of the foundation along the inner surface of the foundation in a state where the concrete 16 is not placed. Even in the case of this, the heat insulating material 22 may be damaged from the soil to form an ant road.

Therefore, conventionally, it has been required to decide whether or not to adopt the basic insulation method shown in the drawing, taking into consideration the habitation and damage of termites in the vicinity of the construction site. The present situation is that it is severely restricted.

In view of such circumstances, the present invention has a termite-preventing function capable of preventing termites from entering through the heat-insulating material while forming a good temperature environment using the heat-insulating material. It is intended to provide a basic heat insulation structure and a construction method thereof.

[0009]

As a means for solving the above-mentioned problems, the present invention provides a basic heat insulation structure in which a heat insulating material is provided on the side of the base (that is, at least one of the outside and the inside of the base). with at least the heat insulating material anti-termite handle portion to be buried in the soil, covered with a termite control sheet and at least the outer surface and the upper surface of the insulation, the insulation
Align the top surface of the material and the top surface of the foundation at approximately the same height
At the same time, a packing is interposed between the upper surface of the foundation and the base installed on the foundation, and the packing is subjected to a termite-proof treatment.
The cover part is integrally molded and the cover part is
By extending from the kin to the outside of the foundation,
The upper end of the ant-proof sheet and the upper end of the heat insulating material at the bar
It covers the surface .

As a method of constructing this foundation heat insulating structure, a heat insulating material having at least an outer side surface and an upper end surface covered with an anti-termite sheet on the side of the foundation is substantially the same as the upper surface of the foundation. Of the heat insulating material, and a portion of the heat insulating material that is buried in the soil is treated with an anti-termite treatment, and the structure between the upper surface of the foundation and the foundation installed on the foundation is protected. It is possible to adopt a method of interposing a packing having a cover portion that has been subjected to a dovetail treatment, and by this cover portion, the upper end portion of the heat insulating material and the upper end portion of the termite prevention sheet that covers the upper end surface of the heat insulating material are covered. Becomes

According to the basic heat insulating structure, a good temperature environment can be formed by disposing the heat insulating material on the outer side of the foundation, and at the same time, the portion of the heat insulating material buried in the soil is treated with an anti-termite treatment. It is possible to prevent termites wandering in the soil from breaking through the heat insulating material, and it is possible to prevent termites from entering through the heat insulating material.

Furthermore, since at least the outer surface and the upper end surface of the heat insulating material are covered with the termite sheet, it is possible to more reliably prevent termites from entering the building side.

Further, a packing is interposed between the upper surface of the foundation and a base installed on the upper surface of the foundation, and a ant-preventive cover portion for covering the upper surface of the heat insulating material is extended from the packing to the outside of the foundation. Therefore, the airtightness between the foundation and the base can be enhanced by the interposition of the packing, and the ant-proof effect can be enhanced by effectively using the packing.

As the means for performing the termite proofing treatment, the heat insulating material may be formed of a foamed synthetic resin plate mixed with a termite controlling agent, or at least a portion of the heat insulating material buried in the soil may be a termite controlling material. You may make it cover with.

In the latter case, various members having an anti-termite function such as an anti-termite sheet and an anti-termite plate can be applied to the ant-proof material regardless of its specific structure.

In this case, if the upper surface of the heat insulating material is covered with an anti-termite sheet and the upper end portion of the anti-termite sheet is fixed to the upper surface of the foundation or the base on the foundation with an anti-termite tape, the anti-termite sheet is protected. The anti-termite tape itself that fixes the upper end of the ant sheet can further enhance the anti-termite effect.

If the entire packing is integrally molded and at least the cover portion (preferably the entire packing) of the packing is made to contain an anti-termite agent,
The mass productivity of the packing itself can be improved.

Further, at least a part of the termite proof material is constituted by a termite proof plate having a projecting portion projecting toward the outer side of the foundation, and the termite proof plate is arranged so that the projecting portion is located in the soil. By doing so, the projecting portion acts as a so-called ant-repellent action, so that the creeping up of termites in the soil can be more effectively suppressed and the termite prevention effect can be further enhanced.

As for the lower end of the heat insulating material, the heat insulating material is disposed on the bottom of the foundation, and the outer surface of the heat insulating material is covered with an anti-termite sheet. By fixing the portion protruding from the lower end of the heat insulating material to the upper surface of the base bottom with an adhesive having an anti-termite function,
The lower end portion of the heat insulating material can be surely covered with the ant-proof sheet, and the ant-proof effect of the adhesive itself used for the fixing can be further enhanced.

The term "arrange the heat insulating material on the bottom of the foundation" does not necessarily mean that the lower end surface of the heat insulating material is in contact with the upper surface of the bottom of the foundation, and these surfaces are separated from each other. And the case where a spacer is interposed between the surfaces.

In addition, the outer surface of the heat insulating material is covered with an anti-termite sheet, and the lower end portion of the anti-termite sheet that extends beyond the lower end of the heat insulating material covers the lower surface of the heat insulating material. You may make it go around to the back side of.

The heat insulating material may be applied to the side after the foundation has been cast. However, a dovetail sheet is fixed to one side of the heat insulating material in advance, and this heat insulating material is The construction efficiency can be further enhanced by arranging the ant-proof sheet on the side of the foundation in a state of facing the side opposite to the foundation at the same time when the foundation is cast.

Further, the present invention is a heat insulating material for basic heat insulation used for performing the above-mentioned construction method, wherein an anti-termite sheet is fixed to one side surface of the heat insulating material while leaving the upper part thereof, and the upper part of the anti-termite sheet. The upper part of the heat insulating material is in a peelable state.

In this heat insulating material, it is more preferable that the lower end portion of the termite prevention sheet is left over from the lower surface of the heat insulating material and the lower end portion is wrapped around the back surface of the heat insulating material so as to cover the lower surface of the heat insulating material. preferable.

At the same time when the foundation is cast, the heat insulating material for foundation heat insulation is arranged outside the foundation with the termite-preventing sheet facing outward, and the heat insulation material protrudes above the upper surface of the foundation. By cutting off the part and covering the cut-off surface with the upper end surface of the termite-proof sheet, the construction efficiency is higher than the method of disposing the heat insulating material after the foundation is placed, and A good termite proof structure can be constructed simply by disposing a heat insulating material.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the structure other than the part relating to the termite prevention process is basically the same as that shown in FIG. 8, and the same elements are designated by the same reference numerals and the description thereof is omitted. To do.

1) First Embodiment (FIG. 1) In this embodiment, an anti-termite sheet 24 is provided between the heat insulating material 22 and the lath 18 in the structure shown in FIG. That is, the ant-proof sheet 24 is provided outside the heat insulating material 22.
And the lath 18 and the finishing wall 20 are installed on the ant-proof sheet 24.

The anti-termite sheet 24 is arranged so as to cover the entire outer surface of the heat insulating material 22, and the lower end portion 24a and the upper end portion 24b thereof protrude from the lower surface and the upper surface of the heat insulating material 22, respectively. The lower end portion 24a is fixed to the upper surface of the base bottom portion 12a by an adhesive 26 containing an anti-termite agent, and the upper end portion 24b is covered on the upper surface of the heat insulating material 22 from the outside. Then, the termite proof sheet 28 is fixed on the upper surface of the heat insulating material 22 by attaching the termite proof tape 28 on the termite proof sheet upper end portion 24b and the base upper surface 12c so as to straddle them. The base 14 is installed on the ant-proof tape 28.

As the termite-proof sheet 24, a sheet of synthetic resin having a moisture-proof property such as polypropylene, polyethylene or ethylene vinyl acetate is used, and a pyrethroid insecticide (silafluofen, etofenprox, bifenthrin, etc.) or an organophosphorus insecticide is used. It is preferable to select and mix an effective one from various insecticides such as However, in the present invention, regardless of the specific kind of the termite control component contained in the termite control material, the base material may not have moisture resistance, such as a nonwoven fabric. The same applies to the components contained in the termite proof tape 28.

Although the specific components of the adhesive 26 are not limited,
For example, asphalt or an appropriate emulsion (emulsion of synthetic resin such as acrylic or urethane type or emulsion of synthetic rubber such as SBR) mixed with the above-mentioned insecticide is preferable. The adhesive 26 can be omitted as appropriate.

According to this structure, since the heat insulating material 22 (particularly the portion buried in the soil) is covered from the outside by the termite sheet 24, even if the heat insulating material 22 is applied to the outside of the foundation 12, it will be destroyed. There is no fear. Therefore, this heat insulating material 2
It is possible to prevent the termites from climbing up to the base 14 side by using 2 as an ant road.

Further, in this embodiment, the heat insulating material 22 is used.
The upper end surface of the ant-proof sheet 24 and the ant-proof tape 28 are also covered, and the lower end portion 2 of the ant-proof sheet 24
Since 4a is fixed to the base bottom portion 12a with the adhesive 26 containing an anti-termite component, the protection of the heat insulating material 22 is further strengthened.

The lower end surface of the heat insulating material 22 does not have to be in contact with the upper surface of the base bottom portion 12a, and the heat insulating material 22 may float from the base bottom portion 12a or may be separated from the heat insulating material between the two. The heat insulating material 22 may be applied with the spacer interposed. Also in this case, the lower end of the ant-proof sheet 24a that covers the heat insulating material 22 may be bonded to the base bottom 12a.

Further, the upper end surface of the heat insulating material 22 does not necessarily have to be at the same height as the foundation upper surface 12c, and even if there is a difference in height between the both surfaces, the upper surface of the heat insulating material is covered with the dovetail sheet 24. It is possible to fix the seat upper end portion 24b on the base upper surface 12c.

2) Second embodiment (FIG. 2A)
(B)) The heat insulating material 22 shown in FIG. 1 may be installed after the foundation 12 is placed, but if it is arranged at the same time as the foundation 12 is placed, the installation efficiency will be higher. Increase. Therefore,
In this embodiment, as shown in FIG. 2A, a termite proof sheet 24 is fixed to one side of the heat insulator 22 in advance to form a termite-proof heat insulator. However, the upper end of the dovetail-proof sheet 24 is not fixed to the upper end of the heat insulating material 22, and both are in a peelable state. Also,
The lower end 24a of the ant-preventive sheet 24 is made to be left over from the lower end of the heat insulating material 22, and the lower end 24a is wrapped around to the back side so as to cover the lower surface of the heat insulating material 22.
a is fixed to the heat insulating material 22.

According to this heat insulating material 22, it is possible to construct a good foundation heat insulating structure with a ant-preventing function simply by placing the heat insulating material 22 on the outer side of the foundation 12 at the same time when the foundation 12 is driven. Moreover, the upper end of the heat insulating material 22 and the upper end 24b of the ant-proof sheet
2 is not fixed, so as shown in FIG.
The heat insulating material portion (that is, the upper end of the heat insulating material) protruding from the upper surface 12c of the foundation 12 is cut off to make the height equal to that of the upper surface 12c of the foundation 12, and then the termite-proof sheet is formed on the upper surface of the heat insulating material formed by the cutting. By covering the upper end 24b,
The anti-termite effect can be further enhanced.

In this method, the lower end 24a of the ant-proof sheet does not necessarily have to be wrapped around the lower end of the heat insulating material 22. However, if they are wrapped around in this way, a more reliable anti-termite effect can be obtained, and for example, even if the lower surface of the heat insulating material 22 is separated from the upper surface of the base bottom portion 12a, the termites will break through the heat insulating material 22 from the lower surface. This can be prevented. The upper end 24b also includes the heat insulating material 22 as shown.
Even if the termite-preventing sheet 24 is cut off together with the heat insulating material 22 by fixing it to the upper end of the heat insulating material instead of making it peelable from the upper edge of the heat insulating material, 22 protections are possible.

3) Third Embodiment (FIG. 3) In this embodiment, the termite prevention material for protecting the heat insulating material 22 is
It is composed of the ant-proof sheet 24 and the ant-proof plate 25.

The ant-proof sheet 24 is arranged so as to cover only the lower half portion of the heat insulating material 22, and the lower end portion 24a thereof is attached to the upper surface of the base bottom portion 12a by the adhesive 26 as in the first embodiment. It is stuck in.

The dovetail plate 25 is a main body 2 extending in the vertical direction.
A projecting portion 25b is projected from the lower end of 5a to the outside of the foundation, and the main body portion 25a is the upper surface of the termite sheet 24 and the outer surface of the heat insulating material above it, and includes at least the portion buried in the soil. Is disposed at a height position that covers the outer surface of the. That is, the upper end of the protruding portion 25b is in a state of protruding upward from the ground 10.

As the termite-preventing plate 25, a termite-preventing agent is preferably impregnated or applied to a base material having a certain degree of shape-retaining property such as synthetic resin, metal, hard paper or cloth. For example, a synthetic resin may be kneaded with an anti-termite agent and extruded, or a paper material or a cloth material may be impregnated with the anti-termite agent later. Further, the termite proof plate according to the present invention is a concept including not only a perfect plate-shaped plate as shown in the drawing but also a mesh-shaped plate, for example.

A packing 30 for ensuring airtightness is interposed between the base 14 and the base upper surface 12c, and a longitudinally extending ridge 32 formed on the upper surface of the packing 30 is used as the base. It adheres to the lower surface of 14.

Also in the structure according to this embodiment,
The heat insulating material 22 can be effectively protected from termites. In particular, the projecting portion 25b of the ant-preventing plate 25 plays an ant-repelling role for termites trying to climb up in the soil, and in this example, also plays a role as a lower end retainer of the finishing wall 20. .

As shown in this embodiment, the present invention is not limited to the one in which the entire outer surface of the heat insulating material 22 is covered with the termite-proof material, and it is possible to effectively prevent the termite from entering from at least the soil. Good.

4) Fourth Embodiment (FIG. 4) In this embodiment, the packing shown in the third embodiment is used in place of the dovetail tape 28 shown in the first embodiment. 30 is interposed between the base upper surface 12c and the base 14. A cover portion 30 a extends from the packing 30 to the outside of the foundation 12, and the cover portion 30 a
The packing 30 is disposed so as to cover the upper end 24a of the ant-proof sheet 24 and the upper end surface of the heat insulating material 22, and the cover 30a is subjected to the ant-proof treatment.

As a means for applying an anti-termite treatment to the cover 30a, an anti-termite tape 34 may be attached to the upper surface of the cover section 30a as shown in the figure, or the cover section 30a.
At the time of integrally molding the entire packing 30 including a, at least the cover portion 30a (more preferably the entire packing) may be impregnated with an anti-termite agent. In the latter case, the number of steps for manufacturing the packing 30 is reduced and the mass productivity is further improved.

According to the above structure, the packing 30 is used while enhancing the airtightness under the floor.
It is possible to effectively use 0 to enhance the ant control effect.

5) Fifth Embodiment (FIG. 5) In this embodiment, the upper surface of the heat insulating material 22 is the base upper surface 12
A little higher than c, and the upper end of the heat-insulating material 22 is covered with the upper part of the termite-proof sheet 24, and the upper end of the termite-proof tape 28 is used.
Therefore, it is fixed to the side surface of the base 14. Further, on the heat insulating material 22, the termite-preventing sheet 24 is sandwiched between the heat insulating material 22 and the heat insulating material 2 for walls.
2'is constructed.

As shown in this embodiment, in the present invention, the fixed portion of the upper end portion of the dovetail sheet is not necessarily the base upper surface 1.
It is not limited to 2c, and it is also possible to construct another heat insulating material on the heat insulating material 22 on the side of the foundation.

6) Other Embodiments-In the above-mentioned embodiment, the heat insulating material 2 is formed by using the termite sheet 24.
2 shows the case where the ant-prevention treatment is performed, but by forming the heat insulating material 22 with a foamed synthetic resin plate mixed with an ant-preventive agent (the material of the ant-preventive agent may be the same as that of the ant-preventive sheet 28) Also,
The heat insulating material 22 can be protected from termites. Further, the combined use of such an anti-termite agent-containing heat insulating material and the termite sheet further enhances the termite prevention effect.

In the present invention, regardless of the concrete type of the foundation 12, regardless of whether it is a cloth foundation, a solid foundation or the like, the present invention can be widely applied to the case where a heat insulating material is installed on the side thereof. . Further, the specific cross-sectional shape of the foundation 12 is not limited to the inverted T shape as shown in the figure, and may be any shape that allows the heat insulating material to be applied to the outside.

For example, as shown in FIG. 6 as the sixth embodiment, in the case of placing a solid foundation in which an earth concrete 16 is integrated as a foundation bottom 12a 'as the foundation 12, generally, the foundation 12 is Although the bottom of the foundation does not protrude to the outside, in this case, as shown in the figure, the lower end portion 24a of the termite prevention sheet 24 is wrapped around the back side of the heat insulating material 22 to be insulated by the lower termite sheet lower end portion 24a. The lower end surface of the material 22 may be covered.

In each of the above embodiments, the case where the heat insulating material 22 is applied to the outside of the foundation 12 has been shown, but the present invention is not limited to this. For example, in the case where the heat insulating material 22 is applied to both the inside and outside of the foundation 12 and the case where the heat insulating material 22 is applied only to the inside of the foundation 12, when the soil concrete 16 is not applied to the inside of the foundation, heat insulation of the inside of the foundation is performed. Since the material 22 may be damaged and an ant road may be formed, the present invention can be effectively applied to such a case. In the seventh embodiment shown in FIG. 7 as an example thereof, when the heat insulating material 22 is applied to both the inside and outside of the foundation 12, the inside and outside heat insulating materials 22 are covered with dovetail sheets 24, respectively. The upper end is fixed to the base upper surface 12c by a common antproof tape 28.

[0054]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in a basic heat insulating structure in which a heat insulating material is arranged on the outside of the foundation, at least a portion of the heat insulating material embedded in the soil is treated with a termite repellant treatment. Therefore, there is an effect that it is possible to prevent termites from entering through the heat insulating material while forming a good temperature environment using the heat insulating material. Furthermore, since at least the outer side surface and the upper end surface of the heat insulating material are covered with the termite sheet, there is an effect that it is possible to more reliably prevent termites from entering the building side. Furthermore, since a packing is interposed between the upper surface of the foundation and a base installed on the upper surface of the foundation, a ant-preventive cover portion covering the upper surface of the heat insulating material is extended from the packing to the outside of the foundation. ,
The interposition of the packing has an effect that the airtightness between the foundation and the base can be enhanced, and that the packing can be effectively used to enhance the ant-proof effect.

[Brief description of drawings]

FIG. 1 is a sectional perspective view showing a basic heat insulating structure according to a first embodiment of the present invention.

FIG. 2A is a sectional perspective view of a heat insulating material for basic heat insulation according to a second embodiment of the present invention, and FIG. 2B is a sectional view showing a state in which the heat insulating material is being applied.

FIG. 3 is a sectional perspective view showing a basic heat insulating structure according to a third embodiment of the present invention.

FIG. 4 is a sectional perspective view showing a basic heat insulating structure according to a fourth embodiment of the present invention.

FIG. 5 is a sectional perspective view showing a basic heat insulating structure according to a fifth embodiment of the present invention.

FIG. 6 is a sectional perspective view showing a basic heat insulating structure according to a sixth embodiment of the present invention.

FIG. 7 is a sectional view showing a basic heat insulation structure according to a seventh embodiment of the present invention.

FIG. 8 is a cross-sectional perspective view showing an example of a conventional basic heat insulation structure.

[Explanation of symbols]

10 ground 12 basics 14 foundation 22 Thermal insulation 24 Ant-proof sheet 25 Ant-proof board 26 Adhesive with anti-termite function 28 Ant-proof tape 30 packing 30a cover part

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenjiro Yoshida, 1-23-3, Oi, Shinagawa-ku, Tokyo Fukubi Chemical Co., Ltd. Tokyo Branch (72) Inventor, Hasegawa Ikin 1-23, Oi, Shinagawa-ku, Tokyo No. 3 Fukubi Chemical Co., Ltd., Tokyo Branch (56) References JP2000-248649 (JP, A) JP2000-104361 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) ) E04B 1/62-1/99 E02D 27/01

Claims (7)

(57) [Claims] 1. In a basic heat insulating structure in which a heat insulating material is arranged on a side of a foundation, at least a portion of the heat insulating material embedded in the soil is treated with an anti-termite treatment, and at least an outer surface and an upper end surface of the heat insulating material. And a dovetail sheet to cover the
By aligning the upper end surface and the upper surface of the foundation at substantially the same height,
In addition , a packing was interposed between the upper surface of the foundation and the base installed thereon, and the packing was subjected to a termite-proof treatment.
The cover is integrally molded, and the cover is attached to the packing.
This cover by extending from the outside of the foundation
The upper end of the anti-termite sheet and the upper end surface of the heat insulating material.
A basic heat insulation structure with a termite prevention function characterized by being covered . 2. The basic heat insulation structure having a termite proof function according to claim 1, wherein the heat insulation material is formed of a foamed synthetic resin plate mixed with a termite proof agent. Construction. 3. The basic heat insulating structure having an anti-termite function according to claim 1 or 2, wherein the entire packing is integrally molded, and at least the cover portion of the packing contains an anti-termite agent. A basic thermal insulation structure with an anti-termite function. 4. A base heat insulating structure having a termite-preventing function according to claim 1, wherein at least a part of the termite-preventing material is a termite-preventing plate having a projecting portion projecting toward an outer side of the foundation. A basic thermal insulation structure having an anti-termite function, which is constructed by disposing the anti-termite plate so that the projecting portion thereof is located in the soil. 5. The basic heat insulating structure having an anti-termite function according to any one of claims 1 to 4, wherein the heat insulating material is disposed on a base bottom portion, and an outer surface of the heat insulating material is covered with an anti-termite sheet. At the same time, the lower end of the termite-proof sheet, which is protruding from the lower end of the heat insulating material, is fixed to the upper surface of the foundation bottom with an adhesive having a termite-proof function. Construction. 6. The basic heat insulating structure having an anti-termite function according to claim 1, wherein an outer surface of the heat insulating material is covered with an anti-termite sheet, and a lower end portion of the anti-termite sheet is provided. A basic heat insulating structure having an anti-termite function, characterized in that a portion protruding from the lower end of the heat insulating material is wrapped around the back side of the heat insulating material so as to cover the lower surface of the heat insulating material. 7. A method of constructing a foundation thermal insulation structure having an anti-termite function, wherein a thermal insulation material having at least an outer side surface and an upper end surface covered with an anti-termite sheet on the side of the foundation is substantially the same as the upper surface of the foundation. Between the upper surface of the foundation and the foundation installed on the foundation, a structure in which the portion of the heat insulating material to be embedded in the soil is arranged so as to be aligned with the height, and the portion is embedded in the soil. A packing having a ant-proof treatment cover is interposed, and the cover covers the upper end of the heat insulating material and the upper end of the ant-proof sheet covering the upper end surface of the heat insulating material. Construction method of basic heat insulation structure with ant-proof function.