JP7107207B2 - Building construction method - Google Patents

Description

The present invention relates to a construction method for buildings.

2. Description of the Related Art Conventionally, as described in Patent Literature 1, it is known to arrange various heat insulating materials in buildings such as houses. As a result, it is possible to prevent heat from entering and exiting between the inside and outside of the living space, and to ensure the energy saving and comfort of the house.

Patent Literature 1 describes construction of a sheathing panel made of a sheathing floor material and a plastic foam heat insulating material adhered to the lower surface of the sheathing surface material on the upper part of the wall of a building. In this publication, after installing the sheathing board panel on the upper part of the wall, the gap formed between the heat insulating material of the sheathing board panel and the wall heat insulating material is filled with a heat-insulating sealing material, whereby the sheathing board panel is The continuity of the insulation structure is ensured at the junction between the insulation material and the wall insulation material.

JP 2007-247361 A

In Patent Document 1, after installing a sheathing board panel on the upper part of the wall of a building, the work of filling the gap between the heat insulating material (roof insulating material) of the sheathing board panel and the wall insulating material with a heat insulating sealing material. Is required. This work involves danger because it involves work at height and the construction posture of the worker deteriorates. Therefore, there is a demand for a construction method that can ensure the continuity of the insulation structure between the roof insulation material and the wall insulation material with simpler work.

The present invention has been made in view of the above problems, and its object is to construct a building that can ensure the continuity of the insulation structure between the roof insulation material and the wall insulation material with a simple work. to provide a method.

A building construction method according to one aspect of the present invention includes a wall panel preparation step of preparing a wall panel provided with a wall heat insulating material, and a wall on which the wall panel is installed so that the wall heat insulating material extends in a vertical direction. A panel installation step, a connection insulation installation step of installing a connection insulation so as to be in contact with the upper part of the wall insulation, a roof panel preparation step of preparing a roof panel provided with a roof insulation, and the connection insulation After the material installation step, a roof panel installation step of installing the roof panel such that the connecting heat insulating material is sandwiched between the wall heat insulating material and the roof heat insulating material.

In this construction method, the wall panel is first installed, and after installing the connecting heat insulating material so as to contact the upper part of the wall heat insulating material, the connecting heat insulating material is sandwiched between the wall heat insulating material and the roof heat insulating material. to be installed. As a result, the continuity of the insulation structure between the roof insulation material and the wall insulation material is ensured via the connection insulation material. According to this construction method, it is possible to ensure the continuity of the insulation structure between the roof insulation material and the wall insulation material simply by installing pre-assembled roof panels. Compared to the case where the heat insulating sealing material is filled after installation, construction work on site is simpler, and the danger associated with working at height can be reduced.

In the building construction method described above, the roof panel preparing step comprises: a plurality of first roof members extending in one direction and spaced apart from each other in another direction orthogonal to the one direction; and a second roof member arranged on the first roof member spaced apart from each other in the one direction, and the roof heat insulating material arranged between the first roof members adjacent to each other in the other direction. and a second roof heat insulating material arranged between the second roof members adjacent in the one direction and constituting the roof heat insulating material together with the first roof heat insulating material. The roof panels provided may be assembled. In the roof panel installation step, the roof panel may be installed such that the connecting insulation material is sandwiched between the wall insulation material and the second roof insulation material.

According to this method, by using the roof panel in which the heat insulating material is arranged using the space between the roof members, it is possible to improve the heat insulation performance while suppressing the increase in the thickness of the roof panel. . Moreover, since the roof members are perpendicular to each other, the contact area is small, and the thermal bridge portion (the portion where the first roof member and the second roof member intersect perpendicularly) in the roof panel can be reduced. In addition, since the first roof member and the second roof member are preliminarily unitized as a roof panel, it is possible to improve the efficiency of work at height.

In the building construction method, in the roof panel preparation step, the roof panel is assembled so that the upper surface of the second roof member is positioned above the upper surface of the second roof insulation material, and the second roof is assembled. A roof base material may be arranged on the upper surface of the second roof member so as to form a gap with the upper surface of the heat insulating material.

According to this method, the gap formed between the upper surface of the second roof insulation material and the roof base material is used as a ventilation layer to expel moisture from the room or when the temperature of the room becomes high due to solar radiation. heat is available.

In the above building construction method, in the roof panel installation step, the first roof insulation material of one roof panel and the other roof panel adjacent to the one roof panel in the one direction. A plurality of the roof panels may be installed so that gaps are formed between them and the first roof insulating material, and then the insulating material may be fitted into the gaps between the first roof insulating materials.

According to this method, after the roof panel is installed, the work of fixing the roof panel (first roof member) to the member that receives the first roof member is performed using the gaps between the first roof insulation materials. can be done. Then, after the work is completed, a heat insulating material is fitted to close the gap, thereby preventing heat from entering or exiting through the gap.

In the building construction method described above, in the connecting heat insulating material installing step, the connecting heat insulating material including a hard portion and a first soft portion made of a material having higher flexibility than the hard portion is prepared, and The connection heat insulating material may be installed such that the first soft portion contacts the upper portion of the wall heat insulating material. In the roof panel installing step, the roof panel may be installed such that the first soft portion is sandwiched between the wall heat insulating material and the roof heat insulating material.

According to this method, the first soft portion of the connecting heat insulating material is pinched and crushed by the wall heat insulating material and the roof heat insulating material, thereby preventing the formation of a gap between the wall heat insulating material and the roof heat insulating material. can be done. As a result, it is possible to more reliably ensure the continuity of the heat insulating structure at the connecting portion between the wall and the roof.

In the building construction method described above, in the connecting heat insulating material installing step, the connecting heat insulating material is made of a material having higher flexibility than the hard part and includes a second soft part and a third soft part sandwiching the hard part. The second soft portion and the third soft portion are in contact with a structural member extending horizontally along the upper portion of the wall panel, and the first soft portion is positioned outside the structural member. Second, the connecting heat insulating material may be installed on the structural member.

According to this method, the connecting heat insulating material can be installed on the structural material while avoiding interference with the bolts and plates of the structural material. Further, by installing the connecting heat insulating material so that the first soft portion is located outside the structural member, the first soft portion can be easily sandwiched between the wall heat insulating material and the roof heat insulating material.

As is clear from the above description, according to the present invention, there is provided a method of constructing a building that can ensure the continuity of the insulation structure between the roof insulation material and the wall insulation material with a simple operation. be able to.

It is a flowchart which shows roughly the procedure of the construction method of the building which concerns on embodiment of this invention. It is a flowchart which shows roughly the procedure of the roof panel preparation process in the construction method of the building which concerns on embodiment of this invention. It is a schematic diagram for explaining a foundation construction process in a construction method of a building concerning an embodiment of the present invention. It is a schematic diagram for explaining an outer wall panel preparation step in the building construction method according to the embodiment of the present invention. FIG. 5 is a schematic diagram showing a cross section of the exterior wall panel along line segment VV in FIG. 4; It is a schematic diagram for explaining the outer wall panel installation step in the building construction method according to the embodiment of the present invention. It is the schematic which shows the structure of a connection heat insulating material. It is the schematic for demonstrating the connection heat insulating material installation process and roof panel installation process in the construction method of the building which concerns on embodiment of this invention. It is the schematic which shows the structure of a roof panel. It is the schematic for demonstrating the 1st roof member arrangement|positioning process in the construction method of the building which concerns on embodiment of this invention. FIG. 4 is a schematic diagram for explaining a step of placing a first roof heat insulating material in the building construction method according to the embodiment of the present invention; It is the schematic for demonstrating the 2nd roof member arrangement|positioning process in the construction method of the building which concerns on embodiment of this invention. FIG. 4 is a schematic diagram for explaining a step of placing a second roof heat insulating material in the building construction method according to the embodiment of the present invention; FIG. 14 is a schematic diagram showing a cross section along line segment XIV-XIV in FIG. 13; FIG. 4 is a schematic diagram for explaining a roof base material arranging step in the building construction method according to the embodiment of the present invention; It is a schematic diagram for explaining the roof panel installation process in the construction method of the building according to the embodiment of the present invention.

Hereinafter, a method for constructing a building according to an embodiment of the present invention will be described with reference to the drawings according to the flowchart shown in FIG. In this embodiment, a method for constructing a two-story steel-framed house will be described as an example of the construction method for a building according to the present invention.

First, step S10 of constructing the foundation of the building is performed (foundation construction step). In this step S10, as shown in FIG. 3, a foundation 2 made of reinforced concrete rising from the ground G1 is constructed. Then, a rigid foamed heat insulating material (not shown) such as polystyrene foam or phenolic foam is placed on the outer surface 2A and the inner surface 2B of the base 2, respectively.

Next, step S20 of preparing the outer wall panel is performed (outer wall panel preparing step). In this step S20, as shown in FIG. 4, a plurality of outer wall panels 3 having a rectangular shape in plan view are prepared. FIG. 5 is a partial cross-sectional view of the exterior wall panel 3 along line segment VV in FIG. 5 shows a state in which the interior panel 7 is assembled to the outer wall panel 3, and the outer wall panel 3 corresponds to the portion indicated by the arrow from the dashed line L1 in FIG.

As shown in FIGS. 4 and 5, the outer wall panel 3 mainly includes a frame 10, an outer wall 20, and an outer wall heat insulating material 60. As shown in FIGS. In addition, the outer wall panel 3 is pre-assembled at a place different from the construction site of the building, and then transported to the construction site. Therefore, the exterior wall panel preparation step S20 may be performed before the foundation construction step S10.

The framework 10 is formed by assembling a plurality of steel frames into a rectangular frame shape. As shown in FIG. 4, the framework 10 includes two pillars 11 arranged parallel to each other with a space therebetween, a lower frame 12 connecting the lower ends of the two pillars 11, and the two pillars 11. and an upper frame 13 connecting the upper ends of the pillars 11, and these four members constitute a rectangular frame. The pillar 11, the lower frame 12 and the upper frame 13 are made of C-shaped steel, for example, and assembled together with the opening facing the inside of the frame. Also, as shown in FIG. 4, the frame 10 includes two braces 14 (braces) that span diagonally across the rectangular frame.

As shown in FIG. 4, the outer wall 20 is a member made of concrete having a rectangular shape along the outer shape of the frame 10. As shown in FIG. As shown in FIG. 5, the outer wall 20 is spaced apart from the framework 10, and includes an outer surface 20A, an inner surface 20B facing the opposite side of the outer surface 20A (the framework 10 side), and an outer surface 20A and the outer surface 20B. and a side surface 20C connecting with the inner surface 20B. On the outer surface 20A, unevenness for design of a building is formed. A frame 21 made of C-shaped steel extending along the length direction of the outer wall 20 is arranged on the inner surface 20B.

The outer wall 20 is supported by a first metal fitting 30 , a second metal fitting 40 and a connecting metal fitting 50 so as to be rotatable with respect to the framework 10 about an axis extending in the thickness direction of the outer wall panel 3 . As shown in FIG. 5, the first metal fitting 30 is an L-shaped metal fitting. The first metal fitting 30 is fixed to the opening side surface of the pillar 11 by a fastener 33 such as a bolt and extends toward the outer wall 20 side. and the other fitting piece 32 extending parallel to the outer surface 11A of the pillar 11 and spaced apart from the outer surface 11A.

The second metal fitting 40 is fixed to the opening side surface of the frame 21 by a fastener 43 such as a bolt and extends toward the frame 10 side. and the other fitting piece 42 extending perpendicularly and spaced from the inner surface 20B of the outer wall 20 . The other metal fitting piece 32 of the first metal fitting 30 and the other metal fitting piece 42 of the second metal fitting 40 overlap each other at a substantially intermediate position between the column 11 and the outer wall 20 . 5, between the outer surface 11A of the pillar 11 and the first metal fitting 30 (the other metal fitting piece 32) and between the inner surface 20B of the outer wall 20 and the second metal fitting 40 (the other metal fitting piece 42) are provided with heat insulating materials 61 and 62, respectively.

The connecting metal fitting 50 rotatably connects the first metal fitting 30 and the second metal fitting 40 to each other around an axis extending in the thickness direction of the outer wall panel 3 . The connecting metal fitting 50 includes a connecting bolt 51 passing through the other metal fitting piece 32 of the first metal fitting 30 and a presser that presses the other metal fitting piece 42 of the second metal fitting 40 against the other metal fitting piece 32 of the first metal fitting 30. a plate 52; The force with which the pressing plate 52 presses the second metal fitting 40 against the first metal fitting 30 can be adjusted by the degree of tightening of the connecting bolt 51 . This allows the outer wall 20 to rotate with respect to the framework 10 in the event of an earthquake or the like, so that the outer wall 20 can be protected.

The outer wall heat insulating material 60 is, for example, a hard foam heat insulating material such as polystyrene foam or phenol foam. The outer wall heat insulating material 60 has a rectangular shape with a width smaller than that of the outer wall 20 and is arranged along the inner surface 20B of the outer wall 20, as indicated by hatching in FIG. As shown in FIG. 5, the outer wall heat insulating material 60 is spaced apart from the inner surface 20B of the outer wall 20 so that an air passage S1 is formed between the outer wall 20 and the inner surface 20B.

The exterior wall panel 3 further comprises an outer fibrous insulation 64 positioned between the exterior wall insulation 60 and the braces 14 . The outer fiber-based heat insulating material 64 is, for example, rock wool or glass wool, and has higher flexibility than the outer wall heat insulating material 60 .

Next, step S30 of installing the outer wall panel 3 is performed (outer wall panel installing step). In this step S30, the plurality of outer wall panels 3 are installed so that the outer wall heat insulating material 60 extends in the vertical direction. Specifically, as shown in FIG. 6, a plurality of outer wall panels 3 are placed on the upper surface 2C of the foundation 2 so as to be adjacent to each other in the horizontal direction in a vertical posture with the length direction along the vertical direction, and the lower frame. 12 are fixed to the foundation 2 by anchor bolts (not shown) or the like. By installing the outer wall panel 3 over the entire foundation 2 in this manner, the first floor wall of the building is constructed.

After the construction of the walls on the first floor is completed, floor beams (beams arranged between the first and second floors) are placed on the upper frame 13 of the outer wall panel 3 and fixed. Then, the second floor wall is constructed by similarly installing the outer wall panel 3 on the floor beam.

After the installation of the outer wall panels 3 is completed, the inner panel 7 is attached to each outer wall panel 3 as shown in FIG. As a result, the brace 14 of the framework 10 is sandwiched between the outer fiber heat insulating material 64 and the inner fiber heat insulating material 65, and these fiber heat insulating materials 64, 65 are separated from the outer wall heat insulating material 60 and the inner wall heat insulating material 66. It becomes a state sandwiched between. After that, the interior material 67 is installed on the inner surface of the inner wall heat insulating material 66 .

Next, step S40 of installing the connecting heat insulating material is performed (connecting heat insulating material setting step). FIG. 7 is a cross-sectional view when the connecting heat insulating material 70 is cut along a direction perpendicular to the length direction.

As shown in FIG. 7, the connecting heat insulating material 70 includes a hard portion 71, second and third soft portions 72 and 73 sandwiching the hard portion 71 from both sides, the hard portion 71 and the second and third soft portions 72, and a first flexible portion 74 contacting each of 73 . That is, the connecting heat insulating material 70 is a composite body in which the hard part 71 and the first to third soft parts 74, 72, 73 are combined, and has both independence and flexibility. The hard portion 71 and the first to third soft portions 74, 72, 73 each have a rectangular cross-sectional shape.

The hard portion 71 is made of a hard foamed heat insulating material such as polystyrene foam or phenol foam. Also, the first to third soft portions 74, 72, 73 are made of a soft heat insulating material having higher flexibility than the hard portion 71, such as a foamed heat insulating material.

FIG. 8 is an enlarged cross-sectional view of the vicinity of the upper part of the outer wall panel 3 of the second floor wall. After preparing the connecting heat insulating material 70, as shown in FIG. ). Specifically, the hard portion 71 and the second and third soft portions 72 and 73 are positioned between the two flanges 4A and 4B of the H-section steel, and the second and third soft portions 72 and 73 Contact with the lower flanges 4A and 4B, respectively, the first soft portion 74 is located outside the H-shaped steel and the upper portion 60A of the outer wall heat insulating material 60 (protruding upward from the upper surface of the outer wall 20) A connecting heat insulating material 70 is installed so as to contact the part).

Next, the process S50 (roof panel preparation process) for preparing the roof panel will be described according to the flowchart of FIG. This step is performed at an arbitrary timing before completion of the connecting heat insulating material installation step S40.

In the roof panel preparation step S50, steps S51 to S55 described below are sequentially performed to assemble the roof panel 80 provided with the roof heat insulating material 85 (FIG. 9). As shown in FIG. 9, the roof panel 80 includes a plurality of first roof members 81 (purlins) extending in one direction D1 and spaced apart from each other in another direction D2 orthogonal to the one direction D1. A second roof member 82 (rafter) extending in the direction D2 and arranged on the first roof member 81 with a gap in one direction D1 and arranged between the first roof members 81 adjacent in the other direction D2. A first roof heat insulating material 83 (insulating material between purlins) constituting a roof heat insulating material 85 and a second roof member 82 adjacent to each other in one direction D1 and together with the first roof heat insulating material 83 and a second roof heat insulating material 84 (an inter-rafter heat insulating material) that constitutes the roof heat insulating material 85 . However, the building construction method of the present invention is not limited to assembling the roof panel 80 having the above configuration.

First, step S51 of arranging the first roof member 81 is performed (first roof member arranging step). In this step S51, as shown in FIG. 10, a plurality of steel first roof members 81 having a hollow square tubular shape are prepared, and these are placed on a jig (not shown) so as to be parallel to one direction D1 and in the other direction. They are placed at equal intervals in D2. Each first roof member 81 has a plurality of metal fittings 81A for supporting the first roof heat insulating material 83 and fixing the second roof member 82 at equal intervals in the longitudinal direction (for example, four pieces each). It is attached.

Next, step S52 of arranging the first roof heat insulating material 83 is performed (first roof heat insulating material arranging step). In this step S52, as shown in FIG. 11, a plurality of first roof heat insulating materials 83 having a rectangular parallelepiped shape shorter than the first roof member 81 are prepared, and these are arranged in the first roof member 81 along one direction D1. Place each in between. At this time, the lower surface of the first roof heat insulating material 83 is placed on the supporting piece 81AA (FIG. 10), which is the portion of the fitting 81A protruding in the other direction D2. Further, the support piece 81AA may be provided with a protrusion projecting toward the lower surface side of the first roof heat insulating material 83, thereby preventing the first roof heat insulating material 83 from moving (displacement). can. The first roof heat insulating material 83 is arranged such that both ends thereof in the one direction D1 are located inside the first roof member 81 in the one direction D1. The first roof heat insulating material 83 is a hard foam heat insulating material such as polystyrene foam or phenol foam.

Next, step S53 of arranging the second roof member 82 is performed (second roof member arranging step). In this step S53, as shown in FIG. 12, a plurality of long second roof members 82 having a quadrangular prism shape are prepared, and these are arranged so as to be perpendicular to the first roof member 81 (parallel to the other direction D2). ) is arranged on the first roof member 81 concerned. Specifically, the second roof member 82 is arranged between a pair of rising pieces 81AB (FIG. 11) of the metal fitting 81A, and the second roof member 82 is fixed to the metal fitting 81A using fasteners such as screws.

Next, the step S54 of arranging the second roof heat insulating material 84 is performed (second roof heat insulating material arranging step). In this step S54, as shown in FIG. 13, a plurality of rectangular parallelepiped second roof heat insulating materials 84 are prepared and arranged between the second roof members 82 along the other direction D2. As a result, the first roof heat insulating material 83 and the second roof heat insulating material 84 are perpendicular to each other.

The second roof heat insulating material 84 is, like the first roof heat insulating material 83, a hard foam heat insulating material such as polystyrene foam or phenol foam, and has a length approximately half that of the second roof member 82. . After the second roof heat insulating material 84 is arranged between the adjacent second roof members 82, it is fixed to the first roof heat insulating material 83 by fixing members 84A such as screws.

FIG. 14 shows a cross section along line XIV-XIV in FIG. As shown in FIG. 14, the second roof heat insulating material 84 is thinner than the second roof member 82 . Therefore, when the second roof heat insulating material 84 is arranged in step S54, the upper surface 82A of the second roof member 82 is positioned above the upper surface 84A of the second roof heat insulating material 84.

Next, step S55 of arranging the roof base material 86 is performed (roof base material placement step). In this step S55, as shown in FIG. 15, a plurality of plate-shaped roof base materials 86 (covering boards) having a rectangular shape in plan view are prepared, and these are fixed to the second roof member 82 using fixing members 86A such as screws. is fixed to the upper surface 82A of the .

As described above, since the upper surface 82A of the second roof member 82 is located above the upper surface 84A of the second roof insulating material 84 when the second roof insulating material placement step S54 is completed, the roof base material 86 is placed on the second roof. When placed on the upper surface 82 A of the second roof member 82 , a gap is formed between the upper surface 84 A of the second roof heat insulating material 84 and the lower surface of the roof substrate material 86 . This gap serves as a ventilation path for discharging moisture from the room in winter, and can be used as a ventilation path for discharging heat when the room becomes hot due to solar radiation in summer. However, forming the ventilation path is not essential in the building construction method of the present invention. The roof panel 80 is assembled according to the procedure described above.

Next, step S60 of installing the roof panel 80 is performed (roof panel installation step). In this step S60, as shown in FIG. 8, the roof panel 80 is installed on the girder 4 so that the connecting heat insulating material 70 is sandwiched between the outer wall heat insulating material 60 and the roof heat insulating material 85 in the vertical direction. More specifically, the second roof heat insulating material 84 is placed on top of the connecting heat insulating material 70 (first soft portion 74 ), and the first soft portion 74 is connected to the outer wall heat insulating material 60 and the second roof heat insulating material 84 . The roof panel 80 is installed so as to be sandwiched between the two in the vertical direction. As a result, the weight of the roof panel 80 crushes the upper portion of the connecting heat insulating material 70 .

FIG. 16 is a plan view of a portion where the installed roof panels 80 are adjacent to each other. As described above, in each roof panel 80, the first roof insulation 83 is shorter than the first roof member 81 in one direction D1. For this reason, in the roof panel installation step S60, as shown in FIG. A plurality of roof panels 80 are installed such that gaps (shaded areas in the drawing) are formed between the roof panels 80 and the end surface of the first roof heat insulating material 83 . Using this gap, the roof panel 80 (first roof member 81) is fixed to the member (climbing beam) that receives the first roof member 81 with fasteners such as bolts. After that, a separately prepared rectangular parallelepiped heat insulating material 100 is fitted into the gap as indicated by the dashed arrow in FIG. 16 .

As described above, in the building construction method according to the present embodiment, first, the outer wall panel 3 is installed (step S30), and after the connecting heat insulating material 70 is installed so as to be in contact with the upper part of the outer wall heat insulating material 60 (step S40), the roof panel 80 is installed so that the connecting heat insulating material 70 is sandwiched between the outer wall heat insulating material 60 and the roof heat insulating material 85 (step S60). As a result, the continuity of the heat insulating structure between the roof heat insulating material 85 and the outer wall heat insulating material 60 is ensured via the connecting heat insulating material 70 . According to this construction method, the continuity of the insulation structure between the roof insulation material 85 and the outer wall insulation material 60 can be ensured simply by installing the pre-assembled roof panel 80, so construction on site is possible. is simple, and the dangers associated with working at height can be reduced.

Other embodiments of the invention will now be described.

In the roof panel preparation step S50, the order of assembling the roof panels 80 is not limited to the procedure shown in FIG. For example, after assembling the first roof member 81 and the second roof member 82 together, the first roof heat insulating material 83 and the second roof heat insulating material 84 may be arranged respectively.

The connecting heat insulating material 70 is not limited to a composite body in which the hard part 71 and the soft parts 72 to 74 are combined. It may consist of

The present invention is not limited to the construction of a building with a steel frame structure, and may be applied, for example, to the construction of a building with a wooden frame structure, or the construction of a building by the 2 × 4 (two-by-four) construction method. may be applied. Moreover, the present invention is not limited to the construction of houses, and can be applied to the construction of other types of buildings.

It should be understood that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

3 outer wall panel 60 outer wall heat insulating material 70 connecting heat insulating material 71 hard part 72 second soft part 73 third soft part 74 first soft part 80 roof panel 81 first roof member 82 second roof member 82A, 84A upper surface 83 first Roof insulation material 84 Second roof insulation material 85 Roof insulation material 86 Roof substrate material 100 Thermal insulation material D1 One direction D2 Other direction

Claims (6)

A building construction method comprising:
a wall panel preparation step of preparing the wall panel with wall insulation;
a wall panel installation step of installing the wall panel so that the wall heat insulating material is along the vertical direction;
A connection heat insulating material installation step of installing a connection heat insulating material so as to contact the upper part of the wall heat insulating material;
a roof panel preparation step of preparing a roof panel with roof insulation;
a roof panel installing step of installing the roof panel so that the connecting heat insulating material is sandwiched between the wall heat insulating material and the roof heat insulating material after the connecting heat insulating material installing step. Method. In the roof panel preparation step, a plurality of first roof members extending in one direction and spaced from each other in another direction orthogonal to the one direction, and extending in the other direction and spaced from each other in the one direction A second roof member arranged on the first roof member with a space therebetween, and a first roof heat insulating material arranged between the first roof members adjacent in the other direction and constituting the roof heat insulating material. a second roof insulation disposed between said second roof members adjacent in said one direction and forming said roof insulation together with said first roof insulation;
2. The building construction method according to claim 1, wherein in said roof panel installation step, said roof panel is installed such that said connecting heat insulating material is sandwiched between said wall heat insulating material and said second roof heat insulating material. In the roof panel preparation step, the roof panel is assembled so that the upper surface of the second roof member is positioned above the upper surface of the second roof insulation material, and the roof panel is positioned between the upper surface of the second roof insulation material. 3. The method of constructing a building according to claim 2, wherein the roof base material is arranged on the upper surface of the second roof member so as to form a gap. In the roof panel installation step, between the first roof heat insulating material of one roof panel and the first roof heat insulating material of another roof panel adjacent to the one roof panel in the one direction 4. The building construction method according to claim 2 or 3, wherein the plurality of roof panels are installed so that gaps are formed between the roof panels, and then a heat insulating material is fitted into the gaps between the first roof heat insulating materials. In the connecting heat insulating material installing step, the connecting heat insulating material including a hard part and a first soft part made of a material having higher flexibility than the hard part is prepared, and the first soft part is the wall heat insulating material. Install the connecting heat insulating material so as to contact the upper part of the material,
The construction according to any one of claims 1 to 4, wherein in the roof panel installation step, the roof panel is installed such that the first soft portion is sandwiched between the wall heat insulating material and the roof heat insulating material. method of construction. In the connecting heat insulating material installation step,
preparing the connecting heat insulating material made of a material having higher flexibility than the hard portion and including a second soft portion and a third soft portion sandwiching the hard portion;
The second soft portion and the third soft portion are in contact with a structural member extending horizontally along the upper portion of the wall panel, and the first soft portion is located outside the structural member. 6. The construction method of the building according to claim 5, wherein a connecting heat insulating material is installed on the structural material.

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