JP2004092125A - External heat insulating wall structure, external heat insulating wall construction method, and wall heat insulating panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external heat insulating wall structure which facilitates construction in a field, easily secures the continuity of a heat insulating/hermetically sealing line, and is resistant to the degradation of a building over a long period of time, to provide an external heat insulating wall construction method, and to provide a wall heat insulating panel which is advantageously used for the wall structure and the wall construction method. <P>SOLUTION: A hermetically sealing tape 4 is stuck to the surface of a framework member 2, and the wall heat insulating panel 1 which is obtained by filling a heat insulator 12 inside a frame member 11 and sticking an airtight film to the rear surface of the heat insulator 12, is hermetically installed outside the framework member 2. Then the wall heat insulating panel 1 is fixed to the framework member 2 by a wall heat insulating panel mounting fixture 5 arranged at the vertical joint of the wall heat insulating panel 1, and a heat insulating filler is filled in the vertical joint of the wall heat insulating panel 1, and an external wall panel is mounted on the wall heat insulating panel 1 by an external wall panel mounting fixture fixed to the vertical joint of the wall heat insulating panel. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an external heat-insulating wall structure and a wall construction method for forming a heat-insulating / airtight line on the outdoor side of a structure, particularly in a wooden or steel-frame building, and a wall insulation panel suitable for the structure / construction method.
[0002]
[Prior art]
In recent years, from the viewpoint of effective use of resources and energy and extension of the life of a building, research for improving the airtightness and heat insulation of the building has been actively repeated in recent years. Such a high airtight and high heat insulation type construction method generally includes an internal heat insulation method in which a heat insulation and airtight line made of a heat insulating material and an airtight material (an airtight film or the like) is provided on the indoor side of the structure, and a heat insulation method on the outdoor side of the structure. -It is roughly divided into the external heat insulation method that provides an airtight line. Traditionally in Japan, the internal heat insulation method has been the mainstream, but there is a gap (discontinuous portion) between the heat insulation and airtight lines around the joints of the heat insulating material and around the outlet, and dew condensation tends to occur on the walls and inside the walls. It was pointed out that mold and mite were generated, and the building was easily deteriorated.
[0003]
On the other hand, the outer heat insulation method is easier to secure the continuity of the heat insulation / airtight line than the inner heat insulation method. Since the structure is located on the indoor side of the heat insulating material, there is an advantage that the structure is hardly affected by a change in the temperature and humidity of the outside air, the internal dew condensation hardly occurs, and the durability of the building is improved.
[0004]
In the case where such an external heat insulation method is applied to a wooden frame building, conventionally, as shown in FIG. 8, a heat insulating material 93 is generally attached with nails 94 or screws to the outdoor side of the columns 91, 92 and beams of the frame as shown in FIG. ing. The joint between the heat insulating materials 93 is determined to be a joint, and an airtight tape 95 is attached to the joint portion or the portion where the heat insulating material 93 is connected to another member, or a foamed urethane or the like is filled on site to continuously connect the heat insulating and airtight lines. Let it. Subsequently, a moisture-permeable waterproof sheet 96 is adhered to the outdoor side of the heat insulating material 93, and the rim 97 and the like are attached to the pillars 91 and 92 and the beam with nails 94 and screws. 98 is attached.
[0005]
[Problems to be solved by the invention]
According to the conventional method, a heat insulating material 93 is attached to the structure from the outdoor side without any gap, and a moisture-permeable waterproof sheet 96, a body edge 97, an outer wall finishing material 98, and the like are sequentially attached. Since it is performed, there are many members to be handled at the site, which involves complicated and difficult work. For this reason, there is a great possibility that the construction accuracy is reduced depending on the skill of the constructor and the heat insulation performance varies. In particular, at the joints between the heat insulating materials 93 and at the portions where the heat insulating materials 93 are connected to other members, the heat insulating / sealing lines are likely to be broken due to wrinkles of the airtight tape 95 or poor filling of the urethane foam. In addition, the heat insulating material 93 shrinks and the airtight tape 95 peels off over time. Such a defect of the heat insulation / airtight line leads to dew condensation due to moisture leakage and promotes deterioration of the building.
[0006]
Further, when attaching the heat insulating material 93, the body edge 97, etc. to the columns 91, 92 and the beams, the nails 94 and screws are driven through the heat insulating material 93 having a thickness of several tens mm or more. At this time, since the columns 91, 92 and the beams are not visible from the working side, the nails 94 and screws may come off from the columns 91, 92 and the beams. Then, the nail 94 or the like that has come off and penetrated becomes a cold bridge, and moisture on the indoor side condenses on the surface of the nail 94 or the like exposed on the indoor side, causing mold and rusting of metal parts.
[0007]
Furthermore, in the above-mentioned conventional construction method, when the outer wall is removed at the time of extension or remodeling or the like, the heat insulating material 93 is easily broken when the nail 94 or the like is pulled out, so that there is a problem in the separation and collection of waste materials and recycling.
[0008]
Accordingly, the present invention provides a wall structure and a wall construction method of an external heat insulation system which is easy to perform on-site, easily secures the continuity of the heat insulation / airtight line, and is unlikely to cause deterioration of the building for a long period of time. It is an object of the present invention to provide a wall heat insulating panel that can be suitably used for a wall construction method.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the outer heat-insulating wall structure of the present invention has a structure in which an airtight tape is adhered to an outdoor surface of a pillar, a beam, a rim, or another frame member, and a heat-insulating material is provided inside a frame material constituting four circumferences. Is filled with an airtight film adhered to the entire indoor side, and the wall insulating panel is built in close contact with the outdoor side of the frame member, and is disposed at a vertical joint portion of the wall insulating panel. Each wall heat insulating panel is fixed to the frame member by a mounting bracket, a vertical joint portion of the wall heat insulating panel is filled with a heat insulating filler, and an outer wall panel mounting bracket fixed to the vertical joint portion of the wall heat insulating panel. An outer wall panel is attached to an outdoor side of the wall heat insulating panel.
[0010]
Further, in the outer heat-insulating wall structure, the wall heat-insulating panel includes a frame material forming four circumferences, a heat-insulating material filled in a frame surrounded by the frame material, and an entire indoor surface of the frame material and the heat-insulating material. The vertical frame material located on the vertical side of the frame material has a substantially L-shaped cross-sectional shape having an outwardly projecting edge at the indoor side edge. A wall insulation panel mounting bracket is attached to a vertical joint where the wall insulation panels abut each other in the left-right direction, and a groove formed by vertical frame members opposed to each other across the vertical joint is filled with an insulation filler. It is characterized by having been done.
[0011]
Further, in this outer heat insulating wall structure, the wall heat insulating panel mounting bracket is mounted on the substrate via a base fixed to the frame member, a substrate fixed to the base, a fastening screw and a coil spring. It is provided with two holding plates, and the holding plate is held so as to rotate through an angle range of about 90 degrees from a position along the axis of the base to a position perpendicular to the axis, and the base is vertically aligned with the wall insulation panel. While being fixed to the frame member while being sandwiched between the joint portions, the holding plate is configured to press the projecting edge of the wall heat insulation panel toward the frame member to fix the wall heat insulation panel. Features.
[0012]
Further, in this outer heat-insulating wall structure, the airtight tape is formed by forming a band made of an independent foamed resin or a band made of a continuous foamed resin having an airtight face layer on at least one surface to a thickness of 2 mm or more. It is characterized by being.
[0013]
In addition, the outer heat insulating wall construction method of the present invention comprises applying an airtight tape to an outdoor surface of a pillar, a beam, a rim, or another frame member, and then filling the inside of a frame material constituting four circumferences with a heat insulating material in advance. Then, a wall insulation panel having an airtight film adhered to the entire indoor side is built in close contact with the outdoor side of the frame member, and then a wall insulation panel mounting bracket disposed at a joint portion of the wall insulation panel. Thus, each wall insulation panel is fixed to the frame member, and then the joint portion of the wall insulation panel is filled with an insulating filler, and then the outer wall panel mounting bracket fixed to the joint portion of the wall insulation panel. And attaching an outer wall panel.
[0014]
Further, the wall heat insulating panel of the present invention is affixed to a frame material constituting four circumferences, a heat insulating material filled in a frame surrounded by the frame material, and an entire indoor surface of the frame material and the heat insulating material. A vertical frame material located on a vertical side of the frame material is formed in a substantially L-shaped cross-sectional shape having an outwardly projecting edge at an indoor side edge. I do.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is an exploded perspective view showing a basic configuration of a wall heat insulating panel used for an external heat insulating wall structure and a wall construction method of the present invention. 2 and 3 are partial perspective views showing the basic configuration of the external heat insulating wall structure and the wall construction method of the present invention, and FIG. 4 is a diagram showing wall heat insulation in the external heat insulating wall structure shown in FIGS. It is a fragmentary sectional view showing the details of the vertical joint part of a panel.
[0017]
The wall heat insulating panel 1 of the present invention includes a frame material 11 constituting four circumferences, a heat insulating material 12 filled in a frame surrounded by the frame materials 11, a back surface of the frame material 11 and the heat insulating material 12 (indoor side). ) And an airtight film 13 adhered to the entire surface. As shown in FIG. 2, a plurality of the wall insulation panels 1 are built adjacent to the outdoor side of the frame member 2 including pillars, studs, beams, and hulls of the building, so that the frame member An air-tight and heat-insulating line is formed on the outdoor side of No. 2.
[0018]
The frame material 11 of the wall heat insulating panel 1 according to the illustrated embodiment is a wooden material having an estimated size of about 100 mm, and the vertical frame material 11a located on the vertical side thereof is, as shown in FIG. It is formed in a substantially L-shaped cross-sectional shape having an outwardly projecting edge 111. The upper frame member 11b located on the upper side has a substantially trapezoidal cross-sectional shape, and is formed such that the upper surface thereof is flush with the upper surface of the roof frame 3 made of a purlin material or the like.
[0019]
The heat insulating material 12 is formed using a foamed resin such as hard urethane, glass wool, or another general heat insulating material. Although the thickness of the heat insulating material 12 is about 75 mm in this example, it is arbitrarily set in accordance with required heat insulating performance as long as it falls within the expected size of the frame material 11. The airtight film 13 is, for example, a polypropylene film having a thickness of about 0.1 mm.
[0020]
In the illustrated building, the frame members 2 such as columns, girders, studs, and hulls are made of lightweight steel members. In the outer heat insulating wall structure and the wall construction method of the present invention, the airtight tape 4 is attached to the outdoor surface of the frame member 2 before the wall heat insulating panel 1 is installed. The airtight tape 4 is made of a foamed resin such as foamed polyethylene, urethane foam, or foamed polystyrene, or a synthetic rubber such as foamed EPDM (ethylene-propylene-diene terpolymer), and has a thickness of at least 2 mm or more. , Preferably a belt-like body of about 3 mm. As such a foam, a foam in which cells are individually independent (independent foam) is preferable, but a foam having a gas-tight face layer provided on at least one surface of a material having open cells (continuous foam) can also be used. The airtight tape 4 is adhered to the surface of the frame member 2 and the wall heat insulating panel 1 is brought into close contact with the surface of the frame member 2 and the back surface of the wall heat insulating panel 1 (the indoor side surface). Is absorbed, and a highly accurate heat-insulating / airtight line is formed.
[0021]
When attaching the heat insulating wall panel to the frame member 2, for example, a wall heat insulating panel mounting bracket 5 as shown in FIG. 5 is used. The exemplified wall heat insulating panel mounting bracket 5 has a configuration in which the wall mounting panel 5 is mounted on a stud 21 configured by back-to-back two lip-shaped channel steels.
[0022]
In the wall heat insulating panel mounting bracket 5, a substrate 52 is fixed to a base portion 51 having a substantially rectangular cross section having an opening groove on the upper surface, and two substrates are mounted on the substrate 52 via a fastening screw 53 and a coil spring 54. A structure is provided in which the holding plates 55 are rotatably mounted. The head of the fastening screw 53 is formed into a knurled shape so that it can be turned with a fingertip, and a hexagonal hole for fastening a wrench is formed on the top surface of the head. The leg of the fastening screw 53 is screwed into a female screw hole formed in the substrate 52. Each holding plate 55 is held on the head side of the fastening screw 53 by the resilient force of the coil spring 54, and has an angle of about 90 degrees in opposite directions from a position along the axis of the base 51 to a position orthogonal to the axis. Rotate the range. The distal end of the holding plate 55 is formed to be curved obliquely downward. A pair of stoppers 56, 56 extending upward are formed on the side edges of the substrate 52, and the stoppers 56 stop each holding plate 55 at a position orthogonal to the axis. The height of the base 51 is substantially equal to the expected size of the overhanging edge 111 in the vertical frame member 11 a of the wall heat insulating panel 1, and a shaft 57 extending downward is fixed to the center of the base 51.
[0023]
The wall heat insulating panel mounting bracket 5 is fixed to the stud 21 in a state where the shaft 57 is inserted into the center gap of the stud 21. At the time of fixing, a pin-shaped locking member 58 is fitted into the tip of the shaft 57 from the back side (indoor side) of the stud 21, or the tip of the shaft 57 is formed into a bolt shape so that the back of the stud 21 is From the nut. As shown in FIG. 4, the wall heat insulation panel 1 is built so that the wall heat insulation panel mounting bracket 5 is sandwiched between the vertical joints. Then, each holding plate 55 of the wall insulation panel mounting bracket 5 is rotated to engage with the overhanging edge 111 of the vertical frame member 11a of the adjacent wall insulation panel 1, and the fastening screw 53 is tightened. The distal end of the plate 55 presses the vertical frame member 11a toward the stud 21. Thereby, the airtight tape 4 stuck on the surface of the stud 21 is compressed between the wall insulating panel 1 and the stud 21 and the wall insulating panel 1 are airtightly connected.
[0024]
The wall heat insulating panel mounting bracket 50 shown in FIG. 6 shows a mode in which the wall heat insulating panel mounting bracket 50 is mounted on a pillar 22 having a rectangular cross section made of a wooden material. This wall insulation panel mounting bracket 50 is substantially the same as that shown in FIG. 5 in the main part, except that the base 51 does not have an axial pillar, and the base 51 is directly screwed to the outdoor surface of the pillar 22. I can do it. To facilitate screwing, the bottom surface of the base 51 is extended in the axial direction, and a screw hole 59 is formed in the extended portion.
[0025]
By using the wall heat insulation panel mounting brackets 5 and 50, the wall heat insulation panel can be easily rotated without turning the holding plate 55 to fasten the fastening screw 53 without any special skill. One can be built. When the wall insulation panel 1 is built in close contact with the frame member 2, the airtight film 13 attached to the back surface (indoor side) of the wall insulation panel 1 and the airtight film attached to the frame member 2. The heat insulating and airtight line is formed on the outdoor side of the frame member 2 by overlapping the tape 4. Since the heat-insulating / airtight line is continuous on the indoor side of the heat-insulating material 12, the frame member 2 is hardly affected by the outside air, and dew condensation in the wall hardly occurs. In addition, since there is a sufficient margin in the overlap width between the airtight film 13 and the airtight tape 4, even when the wall insulation panel 1 and the airtight tape 4 shrink over time, good airtightness is maintained.
[0026]
The vertical joint portion of the wall heat insulating panel 1 has a slight gap because the wall heat insulating panel mounting bracket 5 is sandwiched therebetween. Therefore, as shown in FIG. 4, the heat insulating filler 6 made of urethane foam or other foam resin, glass wool, or the like is filled in the vertical joint portion on site. The vertical frame members 11a each having the overhanging edge 111 form a pair of grooves that open to the outside by forming a pair with the vertical joint portion interposed therebetween. Therefore, a sufficient amount of the heat-insulating filler 6 is filled in the grooves. Can be filled. Thereby, good heat insulating properties are ensured even in the vertical joint portion.
[0027]
When the wall heat insulating panel 1 is thus built on the outdoor side of the frame member 2, the outer wall panel 7 is built on the outdoor side of the wall heat insulating panel 1 as shown in FIG. The width of the outer wall panel 7 is designed with the same module as the width of the wall insulation panel 1. In the present invention, the structure and material of the outer wall panel 7 are not particularly limited. However, basically, a structure in which a frame member 72 made of lightweight channel steel or the like is attached to the back surface of the exterior finishing material 71 is preferable.
[0028]
The outer wall panel 7 is mounted via an outer wall panel mounting bracket 8 fixed to a vertical joint of the wall heat insulating panel 1. FIG. 7 shows an example of the outer wall panel mounting bracket 8. The outer wall panel mounting bracket 8 also has a configuration similar to the wall insulation panel mounting bracket 5 shown in FIGS. That is, two pressing plates 85, 85 are rotatably attached to the substrate 82 via the fastening screws 83 and the coil springs 84, and each pressing plate 85 has an angle range of about 90 degrees in opposite directions. It turns, and the frame member 72 of the outer wall panel 7 is pressed down by the tip.
[0029]
However, the substrate 82 in the outer wall panel mounting bracket 8 has a form in which it is fixed to a flat fixing plate 81. The fixing plate 81 is formed to have a plate width that straddles both vertical frame members 11a of the wall heat insulating panel 1 forming a pair with the vertical joint portion interposed therebetween, and is screw-fixed to the outdoor side found surface of each vertical frame member 11a. It has become. A clip portion 87 formed by bending a spring steel plate is provided below the fixing plate 81, and the clip portion 87 is fitted inside a groove formed by the pair of vertical frame members 11a. It has become. Thereby, the vertical joint of the outer wall panel 7 can be easily matched with the vertical joint of the wall heat insulating panel 1.
[0030]
As described above, according to the external heat insulating wall structure and the wall construction method of the present invention, the wall heat insulating panel 1 in which the heat insulating material 12 is filled in the frame and the airtight film 13 is adhered to the back surface is built outside the frame member 2. By standardizing the cross-sectional dimensions of the frame material 11 of the wall heat insulating panel 1, the base material and the finishing material of the outer wall can be attached to the frame member 2 in a common manner. Since the heat insulating material 12 is filled in the frame of each wall heat insulating panel 1, even when the thickness of the heat insulating material 12 changes depending on environmental conditions and building parts, the wall thickness can be made uniform. In addition, the part shown by the code | symbol 23 in FIG. 4 becomes an air layer.
[0031]
Further, in the outer heat insulating wall structure and the wall construction method of the present invention, the airtight tape 4 stuck on the surface of the frame member 2 and the airtight film 13 stuck on the back surface of the wall heat insulating panel 1 are overlapped. Since the wall heat insulation panel 1 is built, a continuous heat insulation and airtight line is formed, and the airtightness can be maintained for a long time.
[0032]
Further, in the outer heat insulating wall structure and the wall construction method of the present invention, the wall heat insulating panel 1 is attached to the frame member 2 via the wall heat insulating panel mounting bracket 5 arranged on the vertical joint, and the outer wall panel 7 is also similar. Since it is attached to the frame material 11 of the wall heat insulation panel 1 via the outer wall panel attachment fitting 8 having a structure, it is possible to efficiently perform the construction with a simple operation without requiring any special or skill. Since the wall insulation panel mounting bracket 5 and the outer wall panel mounting bracket 8 are separated by the insulated filler 6 on site, there is no metal part penetrating the wall, and therefore no cold bridge occurs. As a result, the formation of dew and mold inside the wall can be effectively prevented, and the durability of the building is improved. In addition, by using such a mounting bracket, each member can be easily removed without breaking even at the time of extension or remodeling, and the recyclability is improved.
[0033]
【The invention's effect】
According to the external heat insulating wall structure and the wall construction method of the present invention, a heat insulating material is filled in a frame, and a wall heat insulating panel in which an airtight film is adhered to a back surface is built outside a frame member to form a heat insulating / airtight line. It is configured to Therefore, by standardizing the cross-sectional dimension of the frame material of the wall heat insulating panel, even if the thickness of the heat insulating material changes, the base material or the finishing material of the outer wall can be attached to the frame member in a common manner. .
[0034]
Further, in the outer heat insulating wall structure and the wall construction method of the present invention, the airtight tape stuck on the surface of the frame member and the airtight film stuck on the back surface of the wall heat insulating panel overlap with a sufficient width, The continuity of the heat-insulating and air-tight line can be maintained well, and it can be maintained for a long time.
[0035]
Further, in the outer heat insulating wall structure and the wall construction method of the present invention, the wall heat insulating panel is attached to the frame member via the wall heat insulating panel mounting bracket disposed on the vertical joint, and the outer wall panel has a similar structure. Since it is attached to the frame material of the wall heat insulation panel via the panel mounting bracket, it is possible to efficiently perform the construction with simple work without requiring any special or skill. By filling the heat insulating filler between the wall heat insulating panel mounting hardware and the outer wall panel mounting hardware, it is possible to eliminate a metal part penetrating the wall and prevent the occurrence of a cold bridge. Also, by using such a mounting bracket, it is easy to recycle each member even when adding or remodeling.
[0036]
And according to the wall heat insulation panel of this invention, the above-mentioned outer heat insulation wall structure and wall construction method can be suitably implemented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a basic configuration of a wall heat insulating panel of the present invention.
FIG. 2 is a partial perspective view showing a basic configuration of an external heat insulating wall structure and a wall construction method (first half) of the present invention.
FIG. 3 is a partial perspective view showing a basic configuration of an outer heat insulating wall structure and a wall construction method (the latter half) of the present invention.
FIG. 4 is a partial cross-sectional view showing details of a vertical joint portion of a wall heat insulating panel in the external heat insulating wall structure of FIGS.
5A and 5B are diagrams showing details of a wall heat insulating panel mounting bracket suitable for a lightweight steel frame building, wherein FIG. 5A is a top view and FIG. 5B is a side view.
FIGS. 6A and 6B are diagrams showing details of a wall heat insulating panel mounting bracket suitable for a wooden frame building, where FIG. 6A is a top view and FIG. 6B is a side view.
7A and 7B are diagrams showing details of an outer wall panel mounting bracket, wherein FIG. 7A is a top view and FIG. 7B is a side view.
FIG. 8 is a partial perspective view showing a basic configuration of an outer heat-insulating wall structure according to a conventional technique.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 wall heat insulating panel 11 frame material 11 a vertical frame material 111 overhanging edge 12 heat insulating material 2 airtight film 2 framing member 21 stud 22 post 4 airtight tape 5 wall heat insulating panel mounting bracket 51 base 52 substrate 53 fastening screw 54 coil spring 55 Holding plate 6 Insulation filler 7 Outer wall panel 8 Outer wall panel mounting bracket

Claims (6)

Airtight tape is adhered to the outdoor surface of pillars, beams, rims and other frame members, a heat insulating material is filled inside the frame material constituting the four circumferences, and an airtight film is adhered to the entire indoor surface. A wall insulation panel is built in close contact with the outdoor side of the frame member, and each wall insulation panel is fixed to the frame member by a wall insulation panel mounting bracket disposed on a vertical joint of the wall insulation panel, The vertical joint portion of the wall heat insulating panel is filled with a heat insulating filler, and an outer wall panel is attached to the outdoor side of the wall heat insulating panel via an outer wall panel mounting bracket fixed to the vertical joint portion of the wall heat insulating panel. And outer insulation wall structure. The wall heat insulating panel includes a frame material constituting four circumferences, a heat insulating material filled in a frame surrounded by the frame material, and an airtight film attached to the entire indoor side of the frame material and the heat insulating material. The vertical frame material located on the vertical side of the frame material has a substantially L-shaped cross-sectional shape provided with an outwardly projecting edge at an indoor side edge,
The wall insulation panel mounting bracket is attached to the vertical joint where the wall insulation panels are butted in the left-right direction,
2. The external heat-insulating wall structure according to claim 1, wherein a groove formed by vertical frame members facing each other with the vertical joint portion interposed therebetween is filled with a heat-insulating filler. 3. The wall heat insulating panel mounting bracket includes a base fixed to the frame member, a board fixed to the base, and two holding plates mounted on the board via fastening screws and a coil spring. The plate is held so as to rotate through an angle range of about 90 degrees from a position along the base axis to a position orthogonal to the axis,
The base is fixed to the frame member while being sandwiched between the vertical joints of the wall insulation panel, and the holding plate presses the projecting edge of the wall insulation panel toward the frame member to fix the wall insulation panel. The outer heat insulating wall structure according to claim 2, wherein the outer heat insulating wall structure is configured to perform the following. The airtight tape is formed by forming a band made of an independent foamed resin or a band made of a continuous foamed resin having an airtight face layer on at least one surface to a thickness of 2 mm or more. 4. The external heat-insulating wall structure according to 2, 3 or 4. Paste airtight tape on the outdoor surface of columns, beams, rims and other frame members,
Next, a wall heat insulating panel formed by filling a heat insulating material in advance inside the frame material constituting the four circumferences and pasting an airtight film on the entire indoor side is closely attached to the outdoor side of the frame member, and built.
Next, each wall heat insulation panel is fixed to the frame member by a wall heat insulation panel mounting bracket arranged at a joint portion of the wall heat insulation panel,
Next, filling the joint portion of the wall insulation panel with an insulation filler,
Next, an outer wall panel is attached via an outer wall panel mounting bracket fixed to the joint of the wall insulating panel. A frame material constituting four circumferences, a heat insulating material filled in a frame surrounded by the frame material, and an airtight film attached to the entire indoor surface of the frame material and the heat insulating material, The vertical frame member located on the vertical side has a substantially L-shaped cross-sectional shape having an outwardly projecting edge at an indoor side edge.

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