Thermal insulation roof structure

Abstract

To provide a thermal insulation roof structure capable of enhancing fire spread resistance of a building roof while suppressing damage to a waterproof sheet.SOLUTION: A thermal insulation roof structure 100 comprises a plurality of thermal insulation panels 4 arranged in line, with thermal insulation material 3 interposed between upper and lower metal outer skins 1, 2. The thermal insulation panels 4, 4... are fixed to support members 5 by fasteners 13 driven into the thermal insulation panels 4, 4... to the support members 5. The thermal insulation roof structure comprises a plurality of waterproof sheets 6 that covers the thermal insulation panels 4, 4... and contains vinyl chloride resin. In adjacent first waterproof sheet 61 and second waterproof sheet 62, an overlapping portion 60 is formed such that the first waterproof sheet 61 overlaps the second waterproof sheet 62. The overlapping portion 60 has a fastening point 64 where the fastener 13 is driven into the second waterproof sheet 62 from above a seat ring 21, and a glass fiber mat 7 is provided between the seat ring 21 and the second waterproof sheet 62.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE This disclosure relates generally to an insulated roof structure having a waterproof sheeting, and more particularly to an insulated roof structure having insulation disposed on a support member and a waterproof sheeting disposed on the insulation. [Background technology]

[0002] Patent document 1 describes a flat roof that is characterized in that an insulating panel is formed by placing an insulating material between two upper and lower metal skins, placing multiple insulating panels on a support member and connecting adjacent insulating panels, and laying a waterproof sheet on the insulating panels. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-057241 A Summary of the Invention [Problem to be solved by the invention]

[0004] The objective of the present disclosure is to provide an insulated roof structure that can improve the fire resistance of a building roof while suppressing damage to the waterproof sheet. [Means for solving the problem]

[0005] The heat-insulating roof structure according to one aspect of the present disclosure is a heat-insulating roof structure in which a plurality of heat-insulating panels, each having a heat-insulating material interposed between upper and lower metal outer skins, are arranged in the eave-ridge direction and in the purlin row direction orthogonal to the eave-ridge direction. The heat-insulating panel is fixed to the support member by driving a fixture from the heat-insulating panel into the support member. The heat-insulating roof structure includes a plurality of waterproof sheets that cover the heat-insulating panel and contain vinyl chloride resin. In adjacent first and second waterproof sheets, an overlapping portion is formed such that the first waterproof sheet overlaps the second waterproof sheet. The overlapping portion has a fastening portion where the fixture is driven in from above the washer with respect to the second waterproof sheet. A glass fiber mat is provided between the washer and the second waterproof sheet.

Effect of the Invention

[0006] According to one aspect of the present disclosure, it is possible to provide a heat-insulating roof structure that can enhance the fire resistance performance of the roof of a building and suppress damage to the waterproof sheet.

Brief Description of the Drawings

[0007] [Figure 1] FIG. 1 is a partial perspective view showing an embodiment of the heat-insulating roof structure of the present disclosure. [Diagram 2] FIG. 2 is a perspective view showing an embodiment of the heat-insulating panel of the present disclosure. [Diagram 3] FIG. 3A is a cross-sectional view showing a part of the heat-insulating roof structure of the present disclosure. FIG. 3B is a cross-sectional view showing a part of the heat-insulating roof structure of the present disclosure. FIG. 3C is a cross-sectional view showing a part of the heat-insulating roof structure of the present disclosure. [Figure 4] FIG. 4A is a cross-sectional view showing a part of the heat-insulating roof structure of the present disclosure. FIG. 4B is a cross-sectional view showing the washer of the present disclosure. FIG. 4C is a plan view showing the washer of the present disclosure. [Diagram 5] FIG. 5A is a cross-sectional view showing a part of a modified example of the heat-insulating roof structure of the present disclosure. FIG. 5B is a cross-sectional view showing a part of a modified example of the heat-insulating roof structure of the present disclosure. FIG. 5C is a cross-sectional view showing a part of a modified example of the heat-insulating roof structure of the present disclosure. [Figure 6] FIG. 6 is a cross-sectional view showing a portion of a modified example of the insulated roof structure of the present disclosure. [Figure 7] FIG. 7A is a plan view of a fastener for use in the insulated roof structure according to the fifth to eighth embodiments of the present disclosure. FIG. 7B is a front view of a fastener for use in the insulated roof structure according to the fifth to eighth embodiments of the present disclosure. FIG. 7C is a component for use in the insulated roof structure according to the fifth to eighth embodiments of the present disclosure. FIG. 7D is a cross-sectional view of a portion of the insulated roof structure according to the fifth to eighth embodiments of the present disclosure. [Figure 8] FIG. 8 is a perspective view showing a sixth modification of the heat insulating panel of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] [First embodiment] Hereinafter, embodiments of the present disclosure will be described. The present disclosure is not limited to the following embodiments. The following embodiments are merely examples of various embodiments of the present disclosure, and various modifications are possible depending on the design as long as the object of the present disclosure can be achieved. In addition, in the following description, "eaves-ridge direction" means the direction along the roof slope, which corresponds to the so-called water flow direction. Furthermore, "beam direction" means the direction perpendicular to the eaves-ridge direction. Furthermore, "thickness direction" means the vertical direction of both the eaves-ridge direction and the beam direction, which corresponds to the up-down direction.

[0009] In addition, the fire resistance index in this specification can be confirmed by a fire spread performance test. This test method is unique to Japan, where many houses are made of wood, and is different from the fire resistance and fire prevention performance test. High fire spread performance means that there is no "spread of fire" (the flame does not spread from the eaves to the ridge due to strong winds during a fire) and no "burn through" (sparks do not reach the interior through gaps in the roofing material). In contrast, the fire resistance and fire prevention performance test requires that a fire that occurs indoors does not penetrate to the outside, etc. In other words, the performance required for the fire spread performance test and the fire resistance performance test are different.

[0010] (overview) In the insulated roof structure 100 of the present disclosure, a plurality of insulating panels 4, each having an insulating material 3 interposed between two upper and lower metal skins 1, 2, are arranged in the eaves-ridge direction X and the girder direction Y perpendicular to the eaves-ridge direction X, and the plurality of insulating panels 4, 4... are placed on a support member 5. The insulating panels 4, 4... are fixed to the support member 5 by driving fasteners 13, 13... from the insulating panels 4, 4... to the support member 5. The insulated roof structure 100 includes a plurality of waterproof sheets 6, 6... covering the insulating panels 4, 4..., and the waterproof sheets 6, 6... contain polyvinyl chloride resin. In the adjacent first waterproof sheet 61 and second waterproof sheet 62, an overlapping portion 60 is formed by overlapping the first waterproof sheet 61 on the second waterproof sheet 62. The overlapping portion 60 has a fastening portion 64 where a fastener 13 is driven from above the washer 21 to the second waterproof sheet 62. A glass fiber mat 7 is provided between the washer 21 and the second waterproof sheet 62.

[0011] By virtue of the above-mentioned configuration, the insulated roof structure 100 of the present invention can improve the fire resistance of the building roof and can also suppress damage to the waterproof sheets 6, 6 . . .

[0012] To explain in more detail, the overlapping portion 60 is formed by the overlapping of parts of two adjacent waterproof sheets 6, 6 (first waterproof sheet 61 and second waterproof sheet 62), and as described above, the waterproof sheets 6, 6 contain polyvinyl chloride resin. Therefore, in this overlapping portion 60, the first waterproof sheet 61 and the second waterproof sheet 62 can be bonded (thermally fused) by applying heat to at least one of the waterproof sheet 6 arranged on the lower side (second waterproof sheet 62) and the waterproof sheet 6 arranged on the upper side (first waterproof sheet 61). This makes it possible to reduce the use of adhesive to bond the first waterproof sheet 61 and the second waterproof sheet 62.

[0013] In addition, when negative pressure is applied to the waterproof sheets 6, 6..., a tensile force may be generated so that the waterproof sheets 6, 6... bulge upward. In this case, the second waterproof sheet 62 may be damaged around the adhesion points between the first waterproof sheet 61 and the second waterproof sheet 62 in the overlapping portion 60, particularly around the fastening points 64 where the fasteners 13 are driven from above the washers 21. In response to this, in the present disclosure, a glass fiber mat 7 is arranged between the washers 21 and the second waterproof sheet 62 at the fastening points 64. In this case, the glass fiber mat 7 can protect the second waterproof sheet 62 from contact with the washers 21. Therefore, even if the strength of the second waterproof sheet 62 is reduced, damage to the second waterproof sheet 62 can be suppressed. For these reasons, the insulated roof structure 100 can increase the fire spread resistance of the roof of the building and suppress damage to the waterproof sheets 6, 6....

[0014] In this embodiment, the waterproof sheets 6, 6... adjacent to each other in the eaves-ridge direction X overlap each other (see FIG. 1). That is, a part of the first waterproof sheet 61 and a part of the second waterproof sheet 62 adjacent to each other in the eaves-ridge direction X overlap each other to form an overlapping portion 60. In this case, the overlapping portion 60 is formed so as to extend in the girder direction Y.

[0015] (Insulated roof structure) In this embodiment, the insulated roof structure 100 is formed by laying a plurality of insulating panels 4 (see FIG. 1). The plurality of insulating panels 4, 4... are installed so as to be lined up in the eaves-ridge direction X. Two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the ridge-side insulating panel 4a with the ridge side end of the eaves-side insulating panel 4c. In other words, a connection portion 42 is formed between the two insulating panels 4a, 4c (see FIG. 3C). The connection portion 42 of the two insulating panels 4a, 4c is formed so as to provide a gap 40.

[0016] In this embodiment, the insulated roof structure 100 is a sloped roof. Therefore, of the two insulating panels 4a, 4c installed side by side in the ridge direction X, the insulating panel 4a is located above the insulating panel 4c in the up-down direction.

[0017] The insulated roof structure 100 can exhibit particularly excellent fire spread resistance when applied to a sloped roof. To explain in more detail, when a fire breaks out in a building with a sloped roof, the flames of the fire tend to spread easily from the eaves side of the roof to the ridge side, that is, the fire tends to spread easily. In contrast, when the insulated roof structure 100 is applied to the roof of a building, the fire spread resistance of the roof is improved, and therefore it is possible to prevent the fire from spreading from the eaves side of the roof to the ridge side.

[0018] The multiple insulating panels 4, 4... are installed so as to be aligned in the girder direction Y perpendicular to the eaves-ridge direction X. In this embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by fitting together. In other words, a fitting portion 41 is formed between the two insulating panels 4a, 4b (see FIG. 3B). The ridge side end of the insulating panel 4a and the ridge side end of the insulating panel 4b are arranged so as to be aligned in a straight line in the girder direction Y (see FIG. 1).

[0019] The insulating panels 4, 4... are fixed to the support members 5 by driving fasteners 13, 13... from the insulating panels 4, 4... to the support members 5. In this embodiment, the support members 5 are structural members that are laid along the girder direction Y, and constitute, for example, purlins, beams, girders, etc. In other words, in this embodiment, the insulating roof structure 100 includes a plurality of support members 5, 5.... Each of the plurality of support members 5, 5... extends in the girder direction Y. The plurality of support members 5, 5... are arranged at a predetermined interval in the eaves-ridge direction X, and are arranged so as to be located higher than the support members 5, 5... on the ridge side. In addition, the sizes of the support members 5, 5... used may be the same or different. For example, in this embodiment, the support member 51 or the support member 52 that is wider in the eaves-ridge direction X than the support member 51 can be used depending on the location where the support members 5, 5... are arranged (see FIG. 1).

[0020] <Thermal insulation panel> The heat insulating panel 4 is formed as a sandwich panel by filling and interposing the heat insulating material 3 between two upper and lower metal skins 1, 2. The thickness (length in the thickness direction Z) of the heat insulating panel 4 is not particularly limited, but is 35 to 60 mm. The length of the heat insulating panel 4 in the direction extending in the eaves-ridge direction X is not particularly limited, but is 500 to 1200 mm. Each of the metal skins 1, 2 is formed, for example, by rolling or bending a metal plate. As the metal plate, various metal plates such as stainless steel plate, zinc-plated steel plate, SGL (registered trademark) steel plate, aluminum-zinc alloy-plated steel plate ("Galvalume steel plate (registered trademark)"), painted steel plate, and polyvinyl chloride-coated steel plate are used. Each of the metal skins 1, 2 is painted with an organic matter. The organic matter contains at least one selected from the group consisting of polyester resin, fluorine resin, epoxy resin, polyurethane resin, silicone resin, acrylic resin, amino-alkyd resin, and vinyl chloride resin. The surfaces of the metal skins 1, 2 are flat. In other words, the surface of the heat insulating panel 4 is flat. The back surface of the metal skins 1, 2, which is the surface opposite to the front surface, faces the heat insulating material 3. The back surfaces of the metal skins 1, 2 are not particularly limited, but are flat, for example. In this disclosure, when the heat insulating panel 4 is used in the heat-insulating roof structure 100, the side of the two metal skins 1, 2 that is disposed on the outside is the outer skin steel plate 1, and the side that is disposed on the inside is the inner skin steel plate 2. The thickness of the outer skin steel plate 1 is not particularly limited, but is, for example, 0.27 to 1.6 mm. The thickness of the inner skin steel plate 2 is not particularly limited, but is, for example, 0.27 to 1.6 mm. The thickness of the outer skin steel plate 1 and the thickness of the inner skin steel plate 2 may be the same or different.

[0021] The thickness of the heat insulating material 3 is not particularly limited, but is, for example, about 31.8 to 59.46 mm. The heat insulating material 3 contains a polyisocyanurate foam. The polyisocyanurate foam can be formed from a composition containing a polyisocyanate, a polyol, a flame retardant, and an additive. The polyol contains at least one selected from the group consisting of, for example, polyester-based polyols and polyether-based polyols. Examples of the flame retardant include phosphate-based compounds. The heat insulating material 3 may also contain a foaming agent.

[0022] The metal skins 1, 2 and the heat insulating material 3 can be bonded together to form a single unit.

[0023] In this embodiment, the fitting protrusion 10 is formed over the entire length of one end of the insulation panel 4 parallel to the eaves-ridge direction X. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. In addition, the fitting recess 11 is formed over the entire length of the other end of the insulation panel 4 parallel to the eaves-ridge direction X. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. In this case, in the insulated roof structure 100, two insulation panels 4a and 4b adjacent to each other in the girder direction Y have a fitting portion 41 in which the fitting protrusion 10 of one insulation panel 4a and the fitting recess 11 of the other insulation panel 4b are fitted together. In this embodiment, the fitting protrusion 10 or the fitting recess 11 is not formed in the ends (eaves side end and ridge side end) other than the one end parallel to the eaves-ridge direction X and the other end parallel to the eaves-ridge direction X, and the end faces are formed flat.

[0024] Further, the insulation panel 4 may have a seal disposed so as to cover the fitting convex portion 10, and a packing 12 disposed so as to cover the fitting concave portion 11 (see FIG. 2). This makes it easier for the fitting convex portion 10 of one insulation panel 4a to be fitted into the fitting concave portion 11 of the other insulation panel 4b in the insulation panels 4a and 4b adjacent to each other in the longitudinal direction Y. Kraft paper with a polyethylene film can be used as the seal.

[0025] It is preferable that the packing 12 is thermally expandable. For example, if the packing 12 is made of rock wool felt mixed with an inorganic expanding material, the packing 12 can foam and expand with heat. In this case, even if the heat of the fire weakens the fit between the insulating panels 4a and 4b in the event of a fire in the building, the packing 12 expands to prevent a gap from being generated in the fitting portion 41. This makes it difficult for flames generated in the event of a fire to pass through the fitting portion 41. As a result, it is possible to prevent the interior of the building from being burned by the flames.

[0026] <Joint material> As described above, in this embodiment, for two insulating panels 4a, 4c adjacent in the eaves-ridge direction X, a gap 40 exists at a connection portion 42 between the eaves side end of the ridge-side insulating panel 4a and the ridge side end of the eaves-side insulating panel 4c. A joint material 8 is provided in the gap 40. This makes it possible to prevent flames from entering the interior of the building even if a fire breaks out on the outside of the insulated roof structure 100.

[0027] To explain this in detail, in order to prevent fire from entering between the ridge-side insulating panel 4a and the eaves-side insulating panel 4c, it is preferable that there is no gap 40 between the eaves-side end of the ridge-side insulating panel 4a and the ridge-side end of the eaves-side insulating panel 4c. However, it is difficult to butt the eaves-side end of the ridge-side insulating panel 4a and the ridge-side end of the eaves-side insulating panel 4c without creating any gap 40 between them. Therefore, in a building with a roof formed by only butting the eaves-side end of the insulating panel 4a and the eaves-side end of the insulating panel 4c, if a fire occurs outside the building, the flames may pass through the small gap 40 between the insulating panel 4a and the insulating panel 4c and enter the inside of the building. In contrast, the insulated roof structure 100 provides a gap 40 at a fixed distance in the connection 42 between the eaves side end of the ridge-side insulating panel 4a and the ridge side end of the eaves-side insulating panel 4c, and installs a joint material 8 to seal the gap 40. Therefore, even if a fire breaks out outside the building, it is difficult for the flames to penetrate into the building through the gap 40. As a result, the inside of the building can be prevented from burning due to the flames.

[0028] The thickness (length in the thickness direction Z) of the joint material 8 is not particularly set and can be adjusted according to the thickness of the insulating panel 4. When the thickness of the insulating panel 4 is, for example, 35 mm, 45 mm, or 60 mm, the thickness of the joint material 8 may be 31 to 39 mm, 40 to 50 mm, or 54 to 66 mm, respectively. The width of the joint material 8 in the eaves-ridge direction X is not particularly set and can be adjusted according to, for example, the length of the gap 40 in the eaves-ridge direction X, but is preferably slightly larger than the interval of the gap 40 (length in the eaves-ridge direction X). The width of the joint material 8 in the eaves-ridge direction X is, for example, 5 to 7 mm.

[0029] The joint material 8 is rock wool felt. The rock wool felt contains rock wool fiber and an organic material. The organic material contains at least one material selected from the group consisting of, for example, cellulose fiber, a binder, and a binder assistant. Furthermore, the rock wool felt is covered with a laminate material. The laminate material contains at least one material selected from the group consisting of, for example, polyester resin, acrylic resin, and polyurethane resin.

[0030] A joint adhesive material may be attached to the connection portion 42 of the two heat insulating panels 4a, 4c so as to cover the joint material 8 provided in the gap 40 at the connection portion 42 of these heat insulating panels 4a, 4c. As the joint adhesive material, for example, an aluminum tape or the like is used.

[0031] <Waterproof sheet> As described above, the waterproof sheets 6, 6... contain vinyl chloride resin, which allows adjacent waterproof sheets 6, 6... to be thermally fused together.

[0032] The thickness of the waterproof sheet 6 is not particularly limited, but is, for example, 1.27 to 1.52 mm. The mass of the waterproof sheet 6 is not particularly limited, but is, for example, 1.61 to 1.95 kg / m 2 The width of the overlapping portion 60 of the two waterproof sheets 6, 6 is not particularly limited, but is, for example, 126 to 154 mm.

[0033] The waterproof sheet 6 contains, in addition to the polyvinyl chloride resin, an organic additive and an inorganic additive. The organic additive may be, for example, diethyl ether. The inorganic additive may be, for example, titanium, calcium, chlorine, etc.

[0034] Additionally, the waterproof sheet 6 may contain at least one resin selected from the group consisting of polyester resin, polyolefin resin, and the like, in addition to the vinyl chloride resin. Among these, it is preferable that the waterproof sheet 6 contains polyester resin in addition to the vinyl chloride resin. In this case, the long-term waterproofness and durability against ultraviolet rays and ozone of the waterproof sheet 6 can be improved. In other words, from the viewpoint of long-term waterproofness and durability against ultraviolet rays and ozone, it is preferable that the waterproof sheet 6 has a configuration in which a sheet containing vinyl chloride resin, a woven fabric formed from polyester resin, and a sheet containing vinyl chloride resin are laminated in this order.

[0035] <Glass fiber mat> As described above, the glass fiber mat 7 is provided between the washer 21 and the second waterproof sheet 62. The glass fiber mat 7 contains glass fibers. The glass fiber mat 7 may contain, in addition to glass fibers, at least one material selected from the group consisting of inorganic materials other than glass fibers, organic materials, and the like. When the glass fiber mat 7 contains a resin binder in addition to glass fibers and the surface of the glass fiber mat 7 is needle-processed, the flexibility of the glass fiber mat 7 can be increased. In this case, the tensile strength of the glass fiber mat 7 is increased, which can contribute to preventing damage to the waterproof sheet 6.

[0036] In this embodiment, the glass fiber mat 7 is placed only at the fastening points 64. Therefore, the glass fiber mat 7 can be placed without requiring much effort.

[0037] As described above, the glass fiber mat 7 can suppress damage to the second waterproof sheet 62. Therefore, the fire spread resistance provided by the second waterproof sheet 62 at the fastening points 64 can be maintained. As a result, even if a fire that occurs outside the building comes into contact with the fastening points 64, the fire can be prevented from spreading to the building from the fastening points 64. In addition, because the glass fiber mat 7 can suppress damage to the second waterproof sheet 62, water is less likely to reach the insulating panel 4 from the damaged points. In other words, the waterproof performance of the insulated roof structure 100 can also be improved.

[0038] The size of the glass fiber mat 7 depends on the size of the fastening portion 64, but is, for example, 0.01 mm. 2 (10 cm × 10 cm). The glass fiber mat 7 only needs to cover the area of ​​the washer 21.

[0039] (Method of forming an insulated roof structure) In this embodiment, the insulated roof structure 100 can be formed as follows.

[0040] First, a plurality of support members 5, 5... are arranged at a predetermined interval. The heat insulating panels 4, 4... are placed on the support members 5, 5..., and the support members 5, 5... are arranged so that the surfaces of the heat insulating panels 4, 4... facing the outside of the building (the surfaces on which the metal skin 1 is arranged) are substantially flat. When arranging the support members 5, 5..., support members 51, 52 of different sizes are used, and in this embodiment, at the locations where the support members 52 are arranged, the connection portions 42 with the adjacent heat insulating panels 4a, 4c are formed so as to overlap in the thickness direction Z (see FIG. 1).

[0041] Next, the multiple insulating panels 4, 4... are placed on the support members 5, 5... so that the surfaces of the insulating panels 4, 4... are approximately flat. Adjacent insulating panels 4a, 4b in the girder direction Y of the support member 5 are connected by engaging the fitting convex portion 10 with the fitting concave portion 11. Adjacent insulating panels 4a, 4c in a direction perpendicular to the longitudinal direction of the support member 5 (eaves-ridge direction X) are connected by butting the eaves side end of the ridge-side insulating panel 4a against the ridge side end of the eaves-side insulating panel 4c. At this time, a certain gap 40 is created between the insulating panels 4a and 4c. In addition, in the insulated roof structure 100, the insulating panels 4a and 4c are arranged so that the connection parts 42 between the adjacent insulating panels 4a and 4c overlap the parts where the support members 52 are arranged in the thickness direction Z. At this time, it is preferable that the part where the eaves side end of the insulating panel 4a and the ridge side end of the insulating panel 4c contact each other is located at approximately the center of the width of the support member 52 in the eaves-ridge direction X. Furthermore, the interval of the gap 40 (length in the eaves-ridge direction X) is not particularly determined and can be changed appropriately according to the mode of use, but it is preferable to adjust it to about 5 mm. Then, the joint material 8 is arranged by pushing it into the gap 40. At this time, a joint adhesive material may be attached so as to cover the gap 40 where the joint material 8 is provided. The length of the joint material 8 in the eaves-ridge direction X is adjusted according to the interval of the gap 40, but if the interval of the gap 40 is about 5 mm, it is preferable that the thickness of the joint material is about 6 mm.

[0042] Next, the adhesive material 17 is attached over the entire length so as to cover the fitting portion 41 of the adjacent insulating panels 4a, 4b (see Figs. 1 and 3B). This allows the boundary between the insulating panels 4a and 4b at the fitting portion 41 of the adjacent insulating panels 4a, 4b to be blocked by the adhesive material 17, thereby improving airtightness and thermal insulation. The width dimension of the adhesive material 17 is not particularly determined, but is, for example, 50 mm. The adhesive material 17 contains aluminum. That is, an aluminum tape is used as the adhesive material 17. The adhesive material 17 may also contain glass fiber.

[0043] Next, fasteners 13, 13... such as screws or nails are driven from the upper side of the heat insulating panels 4, 4... to the support members 5, 5..., thereby fixing the heat insulating panels 4, 4... to the support members 5, 5... (see Figs. 3A to 3C and 4A). The locations where the fasteners 13, 13... are driven can be changed as appropriate depending on the mode of use. Furthermore, the number of fasteners 13, 13... used can also be changed as appropriate depending on the mode of use.

[0044] For example, in the fitting portion 41 of the insulating panels 4a, 4b adjacent to each other in the girder direction Y, the fastener 13 may be driven in so as to fix the adjacent insulating panel 4a and the support member 5, and the fastener 13 may be driven in so as to fix the insulating panel 4b and the support member 5 (see Fig. 1 and Fig. 3B). In this way, the insulated roof structure 100 may have a structure in which the fitting portion 41 is interposed between the fastener 13 driven into the insulating panel 4a and the fastener 13 driven into the insulating panel 4b. Note that, for the fitting portion 41 in which the fitting convex portion 10 and the fitting concave portion 11 are fitted together, the joint fastener 131 may be driven in so as to fix the fitting convex portion 10 and the fitting concave portion 11. In this case, the gap between the fitting convex portion 10 and the fitting concave portion 11 is less likely to open. Therefore, even if a fire occurs in the building, the flames on the outside of the building are less likely to penetrate into the building from between the fitting convex portion 10 and the fitting concave portion 11. As a result, it is possible to prevent the inside of the building from burning due to a flame. Also, the joint fixing tool 131 is driven in so as not to penetrate from the outside of the building to the inside of the building. This makes it possible to prevent condensation inside the building. In addition, since the tip of the joint fixing tool 131 is not visible from inside the building, it is possible to improve the design of the ceiling inside the building.

[0045] Furthermore, at the connection portion 42 of the insulating panels 4a, 4c adjacent in the eaves-ridge direction X, the fasteners 13 may be driven in so as to fix the insulating panel 4a to the support member 5 (52), and the fasteners 13 may be driven in so as to fix the insulating panel 4c to the support member 5 (52) (see Figs. 1 and 3C). In this way, the insulated roof structure 100 may have a structure in which the connection portion 42 is interposed between the fasteners 13 driven into the insulating panel 4a and the fasteners 13 driven into the insulating panel 4c.

[0046] Next, the waterproof sheets 6, 6... are laid so as to cover the upper surfaces of the heat insulating panels 4, 4... fixed to the support member 5. In the waterproof sheets 6, 6... covering the heat insulating panels 4, 4..., in an overlapping portion 60 where a first waterproof sheet 61 and a second waterproof sheet 62 adjacent in the eaves-ridge direction X overlap, a fastener 13 is driven in so as to fix the second waterproof sheet 62 arranged below, the heat insulating panel 4, and the support member 5 before heat fusion (see FIG. 4A). Note that, in fixing the second waterproof sheet 62 to the heat insulating panels 4, 4..., a washer 21 having a protrusion 20 protruding from its underside is used (see FIGS. 4B and 4C).

[0047] Also, the second waterproof sheet 62 is fixed to the heat insulating panels 4, 4... using the washer 21 according to the following method. First, the glass fiber mat 7 is placed on the second waterproof sheet 62. Next, the washer 21 is placed on the glass fiber mat 7. Then, the fastener 13 is driven into the heat insulating panel 4 so as to penetrate the second waterproof sheet 62 from the through hole 21a in the center of the washer 21. This fixes the second waterproof sheet 62, the heat insulating panels 4, 4..., and the support member 5 while the protrusion 20 of the washer 21 is bitten into the second waterproof sheet 62. At this time, the glass fiber mat 7 is interposed between the second waterproof sheet 62 and the washer 21. In this case, the glass fiber mat 7 can reduce the biting of the washer 21, especially the protrusion 20, into the second waterproof sheet 62. Therefore, even if the strength of the second waterproof sheet 62 is reduced, the damage (tear) of the second waterproof sheet 62 can be prevented. The interval at which the washers 21 are arranged in the longitudinal direction Y is about 250 mm.

[0048] According to the above-mentioned method, the second waterproof sheet 62 is fixed to the heat insulating panels 4, 4... with the washer 21 and the fastener 13, and then the first waterproof sheet 61 is laid so as to overlap the second waterproof sheet 62. At this time, the end of the first waterproof sheet 61 is overlapped on the end of the fixed second waterproof sheet 62, so that the end of the first waterproof sheet 61 covers the washer 21 and the fastener 13 and the end of the second waterproof sheet 62 fixed by them. Then, the ends of the first waterproof sheet 61 and the second waterproof sheet 62 overlapping vertically are bonded to each other by thermal fusion. In this way, the ends of the first waterproof sheet 61 and the second waterproof sheet 62 can be bonded without any gaps, and thus the overlapping portion 60 is formed. The width of the overlapping portion 60 between the first waterproof sheet 61 and the second waterproof sheet 62 is not particularly specified, but is, for example, 126 to 154 mm. The location of the overlapping portion 60 to be heat-sealed is not particularly specified, but for example, a width of 40 mm or more from the end of the overlapping portion 60 is welded. Furthermore, both ends of the overlapping portion 60 may be heat-sealed, or only one end may be heat-sealed. In this embodiment, the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to overlap in the thickness direction Z with the location where the support member 5 (51) is disposed.

[0049] After laying the waterproof sheets 6, 6..., the band sheet 18 is attached so as to overlap and be parallel to the fitting portions 41 of the heat-insulating panels 4a, 4b (see FIG. 1). The width of the band sheet 18 is preferably 350 mm or less. The material of the band sheet 18 may be the same as that of the waterproof sheet 6.

[0050] By the above-mentioned method, it is possible to form the insulated roof structure 100. Note that the method for forming the insulated roof structure 100 is not limited to the above, and any appropriate method can be adopted.

[0051] The method of installing the insulation panel 4, the method of installing the support member 5, and the method of installing the waterproof sheet 6 are not limited to the insulated roof structure 100 of the above embodiment. That is, in the present disclosure, the connection portion 42 is formed by butting two adjacent insulation panels 4, 4 together and connecting them. A gap 40 exists in the connection portion 42, and a joint material 8 can be provided in the gap 40. In addition, in the above embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the eaves-ridge direction X are arranged so as to overlap each other, but this is not limited thereto. For example, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the girder direction Y may be arranged so as to overlap each other (not shown). In the above embodiment, the multiple support members 5, 5... are structural members that are laid across along the girder direction Y, but this is not limited thereto. For example, the multiple support members 5, 5... may be structural members that are laid across along the eaves-ridge direction X.

[0052] [Second embodiment] The following describes a thermally insulated roof structure 100 according to the second embodiment. Note that the description of the same components as those in the first embodiment will be omitted.

[0053] In the second embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a and the left end of the right insulating panel 4b in the girder direction Y, and two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4c adjacent in the eaves-ridge direction X have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a and the fitting recess 11 of the other insulating panel 4c are fitted together.

[0054] In the second embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a against the left end of the right insulating panel 4b, forming a connection part 42 between the insulating panels 4a, 4b. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0055] Furthermore, in the second embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the longitudinal direction Y are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the ridge direction X.

[0056] The plurality of support members 5, 5 . . . are structural members that are laid across the building in the ridge direction X.

[0057] In this embodiment, the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to overlap in the thickness direction Z with the portion where the support member 5 (51) is disposed.

[0058] [Third embodiment] A description will now be given of a heat-sealed roof structure 100 according to the third embodiment. Note that a description of the same configuration as in the first embodiment will be omitted.

[0059] In the third embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a and the left end of the right insulating panel 4b in the girder direction Y, and two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4c adjacent in the eaves-ridge direction X have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a fits into the fitting recess 11 of the other insulating panel 4c.

[0060] In the third embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a against the left end of the right insulating panel 4b, forming a connection part 42 between the insulating panels 4a, 4b. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0061] Furthermore, in the third embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent in the eaves-ridge direction X are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the girder direction Y.

[0062] The multiple support members 5, 5 . . . are structural members that are laid across the girder direction Y.

[0063] In this embodiment, the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to overlap in the thickness direction Z with the portion where the support member 5 (51) is disposed.

[0064] [Fourth embodiment] A description will now be given of a heat-sealed roof structure 100 according to the fourth embodiment. Note that a description of the same configuration as in the first embodiment will be omitted.

[0065] In the fourth embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the insulating panel 4a on the ridge side with the ridge side end of the insulating panel 4c on the eaves side in the eaves-ridge direction X, and two adjacent insulating panels 4a, 4b in the girder direction Y are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 parallel to the eaves-ridge direction X. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 parallel to the eaves-ridge direction X. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4b adjacent in the girder direction Y have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a fits into the fitting recess 11 of the other insulating panel 4b.

[0066] In the fourth embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the ridge-side insulating panel 4a against the ridge side end of the eaves-side insulating panel 4c, forming a connection part 42 between the insulating panels 4a, 4c. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0067] Furthermore, in the fourth embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the longitudinal direction Y are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the ridge direction X.

[0068] The plurality of support members 5, 5 . . . are structural members that are laid across the building in the ridge direction X.

[0069] In this embodiment, the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to overlap in the thickness direction Z with the portion where the support member 5 (51) is disposed.

[0070] [Fifth embodiment] The following describes a thermally insulated roof structure 100 according to the fifth embodiment. Note that the description of the same configuration as in the first embodiment will be omitted.

[0071] In the fifth embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a and the left end of the right insulating panel 4b in the girder direction Y, and two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 parallel to the girder direction Y. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4c adjacent in the eaves-ridge direction X have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a and the fitting recess 11 of the other insulating panel 4c are fitted together.

[0072] In the fifth embodiment, two adjacent insulating panels 4a, 4b in the girder direction Y are connected by butting the right end of the left insulating panel 4a against the left end of the right insulating panel 4b, forming a connection part 42 between the insulating panels 4a, 4b. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0073] Furthermore, in the fifth embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the longitudinal direction Y are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the ridge direction X.

[0074] The multiple support members 5, 5 . . . are structural members that are laid across the girder direction Y.

[0075] In the fifth embodiment, the interval between the support members 5, 5... is 1200 mm or less. However, if this interval is about 1200 mm, it is desirable to increase the wind pressure resistance of the heat-insulating panels 4, 4... and to prevent the waterproof sheets 6, 6... from coming off. Specifically, it is desirable to drive the fasteners 13 at intervals of 250 mm or less to fix the heat-insulating panels 4, 4... and the waterproof sheets 6, 6.... It is also necessary to drive the fasteners 13 into positions where there are no support members 5, 5... to fix the waterproof sheets 6, 6.... In this case, it is preferable to use two-stage screws 132 to fix the heat-insulating panels 4, 4... and the waterproof sheets 6, 6... (see Figs. 7A and 7B). This makes it easier for the waterproof sheets 6, 6... to be particularly firmly fixed to the heat-insulating panels 4, 4... even in positions where there are no support members 5, 5....

[0076] To explain in a little more detail, when the waterproof sheets 6, 6... are fixed to the heat-insulating panels 4, 4... using the fasteners 13 that do not have two screw portions at locations where there are no support members 5, 5..., the fasteners 13 cannot be penetrated and fixed to the support members 5, 5.... Therefore, the fasteners 13 are not strong enough to fix the insulation panels 4, 4... and the waterproof sheets 6, 6..., and the fasteners 13 are likely to come off from the insulation panels 4, 4... and the waterproof sheets 6, 6.... As a result, the metal skins 1, 2 may be easily peeled off, or the waterproof sheets 6, 6... may also be easily removed. In contrast, when the two-stage screw 132 is driven into the insulation panel 4 so as to penetrate the metal skin 1 on the front side of the insulation panel 4 and the metal skin 2 on the back side of the insulation panel 4, each of the two screw portions of the two-stage screw 132 comes into contact with and gets caught on the metal skins 1, 2, respectively. This makes it difficult for the two-stage screw 132 to come off from the insulation panel 4. As a result, even in places where there are no support members 5, 5..., the waterproof sheets 6, 6... and the member 22 can be firmly fixed to the surface of the heat-insulating panel 4 with the two-stage screw 132 (see FIG. 7D). If the waterproof sheets 6, 6... can be firmly fixed, the waterproofing of the heat-insulating roof structure 100 can be improved. In addition, the two-stage screw 132 is driven into the heat-insulating panel 4 so that each of the two threaded portions of the two-stage screw 132 contacts the metal skins 1, 2, making it particularly difficult for the metal skins 1, 2 to peel off from the heat-insulating panel 4. Therefore, when a fire breaks out in the building, the flames are less likely to come into contact with the heat-insulating material 3. This makes it possible to suppress the spread of the fire to the inside of the building. The two-stage screw 132 may be driven into the heat-insulating panel 4 with the member 22 interposed between the two-stage screw 132 and the heat-insulating panel 4 (see FIG. 7C).

[0077] [Sixth embodiment] A description will now be given of a heat-sealed roof structure 100 according to the sixth embodiment. Note that a description of the same configuration as in the first embodiment will be omitted.

[0078] In the sixth embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the insulating panel 4a on the ridge side with the ridge side end of the insulating panel 4c on the eaves side in the eaves-ridge direction X, and two adjacent insulating panels 4a, 4b in the girder direction Y are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 that is parallel to the eaves-ridge direction X. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 that is parallel to the eaves-ridge direction X. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4b adjacent in the girder direction Y have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a fits into the fitting recess 11 of the other insulating panel 4b.

[0079] In the sixth embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the ridge-side insulating panel 4a against the ridge side end of the eaves-side insulating panel 4c, forming a connection part 42 between the insulating panels 4a, 4c. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0080] Furthermore, in the sixth embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the eaves-ridge direction X are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the girder direction Y.

[0081] The plurality of support members 5, 5 . . . are structural members that are laid across the building in the ridge direction X.

[0082] In the sixth embodiment, similarly to the fifth embodiment, the heat insulating panel 4 is fixed between the support members 5, 5 using a two-stage screw 132.

[0083] [Seventh embodiment] A description will now be given of a heat-sealed roof structure 100 according to the seventh embodiment. Note that a description of the same configuration as in the first embodiment will be omitted.

[0084] In the seventh embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the insulating panel 4a on the ridge side with the ridge side end of the insulating panel 4c on the eaves side in the eaves-ridge direction X, and two adjacent insulating panels 4a, 4b in the girder direction Y are connected by fitting. In this case, a fitting protrusion 10 is formed over the entire length of one end of the insulating panel 4 that is parallel to the eaves-ridge direction X. In addition, the fitting protrusion 10 is formed in a vertically symmetrical shape. Also, a fitting recess 11 is formed over the entire length of the other end of the insulating panel 4 that is parallel to the eaves-ridge direction X. In addition, the fitting recess 11 is formed in a vertically symmetrical shape. Also, in the insulated roof structure 100, two insulating panels 4a, 4b adjacent in the girder direction Y have a fitting portion 41 where the fitting protrusion 10 of one insulating panel 4a fits into the fitting recess 11 of the other insulating panel 4b.

[0085] In the seventh embodiment, two adjacent insulating panels 4a, 4c in the eaves-ridge direction X are connected by butting the eaves side end of the insulating panel 4a on the ridge side against the ridge side end of the insulating panel 4c on the eaves side, forming a connection part 42 between the insulating panels 4a, 4c. A gap 40 exists in the connection part 42, and a joint material 8 is provided in the gap 40.

[0086] Furthermore, in the seventh embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent to each other in the girder direction Y are arranged so as to overlap each other. Therefore, an overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed so as to extend in the eaves-ridge direction X.

[0087] The multiple support members 5, 5 . . . are structural members that are laid across the girder direction Y.

[0088] In the seventh embodiment, similar to the fifth embodiment, the heat insulation panel 4 between the support members 5, 5 is fixed using the double screw 132.

[0089] [Eighth Embodiment] The heat insulation roof structure 100 according to the eighth embodiment will be described. Regarding the same configuration as in the first embodiment, the description will be omitted.

[0090] In the eighth embodiment, two adjacent heat insulation panels 4a, 4b in the purlin row direction Y are connected by butting the right end of the left heat insulation panel 4a and the left end of the right heat insulation panel 4b in the purlin row direction Y, and two adjacent heat insulation panels 4a, 4c in the eave-ridge direction X are connected by fitting. In this case, a fitting convex portion 10 is formed over the entire length at one end of the heat insulation panel 4 parallel to the purlin row direction Y. In addition, the fitting convex portion 10 is formed in an axially symmetric shape. Further, a fitting concave portion 11 is formed over the entire length at the other end of the heat insulation panel 4 parallel to the purlin row direction Y. In addition, the fitting concave portion 11 is formed in an axially symmetric shape. Also, in the heat insulation roof structure 100, there is a fitting portion 41 where the fitting convex portion 10 of one heat insulation panel 4a and the fitting concave portion 11 of the other heat insulation panel 4c adjacent in the eave-ridge direction X are fitted.

[0091] Also, in the eighth embodiment, two adjacent heat insulation panels 4a, 4b in the purlin row direction Y are connected by butting the right end of the left heat insulation panel 4a and the left end of the right heat insulation panel 4b, and thus a connection portion 42 is formed between the heat insulation panels 4a, 4b. And a gap 40 exists in the connection portion 42, and a joint material 8 is provided in the gap 40.

[0092] Furthermore, in the eighth embodiment, the first waterproof sheet 61 and the second waterproof sheet 62 adjacent in the eave-ridge direction X are arranged so as to overlap. Therefore, the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap is formed to extend in the purlin row direction Y.

[0093] The plurality of support members 5, 5 . . . are structural members that are laid across the building in the ridge direction X.

[0094] In the eighth embodiment, similarly to the fifth embodiment, the heat insulating panel 4 is fixed between the support members 5, 5 using a two-stage screw 132.

[0095] [Variations] The embodiments of the present disclosure are not limited to the above-described embodiments. The above-described embodiments can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. Modifications of the above-described embodiments are listed below.

[0096] (Variation 1) In the embodiment, the insulated roof structure 100 is applied to a sloped roof, but is not limited thereto. For example, the insulated roof structure 100 may be applied to a flat roof.

[0097] (Variation 2) In the above embodiment, the joint material 8 is provided in the gap 40, but this is not limiting. For example, the insulated roof structure 100 may be formed without providing the joint material 8. In this case, the effort of providing the joint material 8 can be omitted, and the insulated roof structure 100 can be formed more easily. In this case, it is preferable to prevent the gap 40 from occurring between the eaves side end of the ridge-side insulation panel 4a and the ridge side end of the eaves-side insulation panel 4c.

[0098] (Variation 3) The rock wool felt applied to the joint material 8 may contain expandable graphite. In other words, the joint material 8 is a rock wool felt mixed with an inorganic expandable material. In this case, the joint material 8 may expand due to heat during a fire. Therefore, even if the gap 40 becomes larger due to heat from a fire, the joint material 8 can expand and therefore can particularly block the gap 40. As a result, by blocking the gap 40, the joint material 8 can particularly prevent a flame generated on one surface side (outside) of the insulation panel 4 from passing through to the other surface side (inside the building) of the insulation panel 4.

[0099] (Variation 4) The heat insulating material 3 is not limited to polyisocyanurate foam, and any suitable material may be used. Examples of the material used for the heat insulating material 3 include inorganic heat insulating materials. Examples of inorganic heat insulating materials include rock wool and glass wool.

[0100] Moreover, a resin insulation material other than polyisocyanurate foam may be used instead of polyisocyanurate foam as the insulation material 3. Examples of the resin insulation material other than polyisocyanurate foam include polyurethane foam, polystyrene foam, and polyphenol foam.

[0101] (Variation 5) In the above embodiment, the multiple support members 5, 5... are structural members that are spanned along the girder direction Y, but this is not limited thereto. For example, the support member 5 may have a structure formed in a planar shape so as to be able to support the multiple insulation panels 4, 4... from below. That is, in such a case, the support member 5 does not need to be multiple. Note that when the material of the support member 5 is concrete, a structure formed in a planar shape may be applied.

[0102] Also, in such a modified example, the insulating panels 4, 4... may be fixed to the support member 5 by driving fasteners 13, 13... such as screws or nails from the upper side of the insulating panels 4, 4... to the support member 5 (see FIG. 5A). In addition, in the fitting portion 41 of the insulating panels 4a, 4b adjacent to each other in the girder direction Y, the fasteners 13 may be driven to fix the adjacent insulating panel 4a to the support member 5, and the fasteners 13 may be driven to fix the insulating panel 4b to the support member 5 (see FIG. 5B). In addition, the joint fastener 131 may be driven to penetrate the fitting convex portion 10 and the fitting concave portion 11. In addition, in the connection portion 42 of the insulating panels 4a, 4c adjacent to each other in the eaves-ridge direction X, a plurality of fasteners 13, 13... may be driven on either side of the connection portion 42 to fix the insulating panels 4a and 4c to the support member 5 (see FIG. 5C).

[0103] And, in the overlapping portion 60 where the first waterproof sheet 61 and the second waterproof sheet 62 overlap, the heat insulating panels 4, 4... and the support member 5 can be fixed in the same manner as in the embodiment (see FIG. 6). That is, in the same manner as in the above embodiment, at the fastening points 64 in the overlapping portion 60, the fasteners 13 can be driven in so as to fix the heat insulating panel 4 and the support member 5 using the washers 21 and with the glass fiber mat 7 interposed between the washers 21 and the second waterproof sheet 62.

[0104] (Variation 6) In the above embodiment, the fitting convex portion 10 of the insulation panel 4 is formed to have a vertically symmetrical shape, and the fitting concave portion 11 is also formed to have a vertically symmetrical shape, but this is not limited to this. The fitting convex portion 10 of the insulation panel 4 may be formed to have a vertically asymmetrical shape, and the fitting concave portion 11 may also be formed to have a vertically asymmetrical shape (see FIG. 8). Note that FIG. 8 shows an example of an insulation panel 4 having a vertically asymmetrical shape, and the shape is not limited to this.

[0105] (Variation 7) Regarding the fitting portion 41 where the fitting protrusion 10 and the fitting recess 11 are fitted together, a gap (joint) exists between the fitting protrusion 10 and the fitting recess 11 (see Figs. 3B and 5B). In the above embodiment, the length of the joint is about 10 mm, but is not limited to this. The length of the joint can be determined arbitrarily within the range of 0 mm or more and 12 mm or less.

[0106] [summary] As described above, the insulated roof structure 100 of the present disclosure can improve the fire spread resistance of the roof of a building and can suppress damage to the waterproof sheets 6, 6.... The insulated roof structure 100 has particularly improved fire spread resistance. In other words, based on the provisions of Article 68-25, paragraph 1 of the Building Standards Act (including the case where it is applied mutatis mutandis in Article 88, paragraph 1 of the same act), the insulated roof structure 100 of the present disclosure can comply with the provisions of Article 62 of the same act and Article 136-2-2, items 1 and 2 of the Enforcement Order of the same act (roofs of buildings in fire prevention areas or quasi-fire prevention areas).

[0107] [Aspects] As is apparent from the above embodiments, the present disclosure includes the following aspects.

[0108] The insulated roof structure (100) according to the first aspect of the present disclosure is an insulated roof structure (100) in which a plurality of insulated panels (4) each having an insulating material (3) interposed between two upper and lower metal skins (1, 2) are arranged in an eaves-ridge direction (X) and a girder direction (Y) perpendicular to the eaves-ridge direction (X), and the insulated panels (4, 4...) are fixed to the support member (5) by driving fasteners (13, 13...) from the insulated panels (4, 4...) to the support member (5), The insulation panels (4, 4...) are covered with a plurality of waterproof sheets (6) containing polyvinyl chloride resin, and an overlapping portion (60) is formed between adjacent first and second waterproof sheets (61, 62) such that the first waterproof sheet (61) overlaps the second waterproof sheet (62), and the overlapping portion (60) has a fastening portion (64) for the second waterproof sheet (62) where a fastener (13) is driven in from above a washer (21). A glass fiber mat (7) is provided between the washer (21) and the second waterproof sheet (62).

[0109] According to this embodiment, it is possible to provide an insulated roof structure (100) that can improve the fire resistance of the roof of a building and suppress damage to the waterproof sheets (6, 6 . . . ).

[0110] In the insulated roof structure (100) according to the second aspect of the present disclosure, in the first aspect, two adjacent insulating panels (4, 4) are butt-jointed to form a connection portion (42). A gap (40) exists in the connection portion (42), and a joint material (8) is provided in the gap (40).

[0111] According to this embodiment, the fire resistance of the roof of a building equipped with the insulated roof structure (100) can be further improved.

[0112] In the insulated roof structure (100) according to the third aspect of the present disclosure, in the first or second aspect, each of the plurality of insulating panels (4, 4...) has a fitting convex portion (10) provided at one end parallel to the eaves-ridge direction (X) and a fitting concave portion (11) provided at the other end parallel to the eaves-ridge direction (X). Two insulating panels (4a, 4b) adjacent in the girder direction (Y) have a fitting portion (41) where the fitting convex portion (10) of one insulating panel (4a) fits into the fitting concave portion (11) of the other insulating panel (4b).

[0113] According to this embodiment, it becomes easy to mount the heat insulating panels (4, 4 . . . ).

[0114] The insulated roof structure (100) according to a fourth aspect of the present disclosure is similar to the third aspect in that the fitting convex portion (10) is formed in a vertically symmetrical shape, and the fitting concave portion (11) is also formed in a vertically symmetrical shape.

[0115] According to this embodiment, the mating convex portion (10) of one insulation panel (4) and the mating concave portion (11) of the other insulation panel (4) can be easily mated without any gaps, thereby improving the spark prevention and waterproofing performance of the insulated roof structure (100).

[0116] The insulated roof structure (100) according to a fifth aspect of the present disclosure is the third or fourth aspect, in which a thermally expandable packing (12) is disposed in the fitting portion (41).

[0117] According to this embodiment, it is possible to prevent a gap from occurring in the fitting portion 41. This makes it difficult for flames occurring in the event of a fire to pass through the fitting portion 41. As a result, it is possible to prevent the interior of the building from being burned by the flames.

[0118] The insulated roof structure (100) according to a sixth aspect of the present disclosure is any one of the first to fifth aspects, in which the surface of the insulating panel (4) is flat.

[0119] According to this embodiment, a flat surfaced insulated roof structure (100) can be formed. [Explanation of symbols]

[0120] 1 Metal outer skin (outer steel plate) 2 Metal outer skin (inner steel plate) 3. Insulation 4. Insulation Panels 5 Supporting member 6. Tarpaulin 7. Fiberglass Mat 8 Joint material 10. Fitting protrusion 11 Fitting recess 12 Packing 13 Fixtures 17 Adhesive 18 Belt Sheet 20 protrusions 21 Washer 22 Materials 40 Gap 41 Mating part 42 Connection part 60 Overlapping part 61 First Tarpaulin 62 Second Tarpaulin 64 Fastening point 100 Insulated roof structure 132 Double-step screw

Claims

1. A thermal insulation roof structure in which a plurality of thermal insulation panels each having a thermal insulation material interposed between two upper and lower metal skins are arranged in a ridge direction and a girder direction perpendicular to the ridge direction, The insulation panel is fixed to the support member by driving a fastener from the insulation panel to the support member, A plurality of waterproof sheets are provided covering the heat insulating panels and containing polyvinyl chloride resin; In the adjacent first and second waterproof sheets, an overlapping portion is formed such that the first waterproof sheet overlaps the second waterproof sheet, The overlapping portion has a fastening portion where the fastener is driven into the second waterproof sheet from above the washer, A glass fiber mat is provided between the washer and the second waterproof sheet. Insulated roof structure.

2. A connection portion is formed by butting two adjacent insulation panels together, A gap exists in the connection portion, A joint material is provided in the gap.

2. The insulated roof structure of claim 1.

3. Each of the plurality of insulation panels includes a fitting protrusion provided at one end parallel to the eaves ridge direction and a fitting recess provided at the other end parallel to the eaves ridge direction, The two insulation panels adjacent to each other in the longitudinal direction have an engagement portion in which the engagement convex portion of one insulation panel and the engagement concave portion of the other insulation panel are engaged with each other.

2. The insulated roof structure of claim 1.

4. The fitting protrusions are formed in a vertically symmetrical shape, and the fitting recesses are also formed in a vertically symmetrical shape.

4. The insulated roof structure of claim 3.

5. A thermally expandable packing is disposed in the fitting portion.

4. The insulated roof structure of claim 3.

6. The surface of the insulation panel is flat; 2. The insulated roof structure of claim 1.

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