Horizontally laid roof structure

Abstract

To provide a horizontally laid roof structure that can construct horizontal roofing materials from an upstream side to a downstream side without limiting a substrate structure (using special holding members).SOLUTION: A horizontally laid roof structure of the present invention is formed by arranging horizontal roofing materials 1 on surface sides of heat insulation materials 2. On the heat insulation material 2, an embankment 21 protruding to the surface side is formed at an upstream side, and a drain passage 22 formed with multiple shallow grooves is provided to flow rainwater from the upstream side to a downstream side on a surface. The horizontal roofing material comprises: a face plate part 11 covering at least the heat insulation material 2; an upstream side molding part 12 bending to a surface side at its upstream edge; and a downstream side molding part 13 having an engaging part 131 folded back to a rear side at its downstream edge and an extending piece 132 extended to the downstream side by folding back its tip again. The downstream side molding part 13 (the engaging part 133) of a joint part 14 of the horizontal roofing materials 1, 1 adjacent to each other in a longitudinal direction is arranged at the embankment 21 of the heat insulation material 2 arranged at a lower stage is arranged in contact therewith.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a horizontal roof structure that allows horizontal roofing materials to be installed from the above-water side to the below-water side without limiting the base structure (using special holding members). [Background technology]

[0002] Conventionally, horizontal roofing has generally been constructed by laying roofing materials from the eaves (below the water) side to the ridge (above the water) side. This construction method requires the installation of large-scale scaffolding, so the applicant proposed a construction method in which roofing materials are laid down from the ridge (above the water) side to the eaves (below the water) side in Patent Document 1, and discovered that this method can significantly reduce the labor required for scaffolding installation and shorten the construction period. Furthermore, with the construction method of laying roofing material from the below-water side to the above-water side, there is a risk that rainwater, dirt, dust, and fallen leaves will penetrate the underside of the roofing material at the boundary between the installed roofing material and the uninstalled part, causing corrosion, or that workers will step on the installed roofing material.However, the construction method of laying roofing material from the above-water side to the below-water side described in Patent Document 1 eliminates such risks. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-222809 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the construction method of Patent Document 1 requires a special retaining member, i.e., a "long retaining clip member with an engaging groove along its length," which cannot be attached to any base. In addition, it requires an installation process for the retaining member.

[0005] Therefore, the present invention aims to propose a horizontal roof structure that allows horizontal roofing materials to be installed from the above-water side to the below-water side without limiting the base structure (using special holding members). [Means for solving the problem]

[0006] The present invention has been proposed in consideration of the above, and relates to a horizontally-tiled roof structure in which horizontally-tiled roofing materials are arranged on the surface side of insulating material, wherein the insulating material has a bank formed on the above-water side that rises toward the surface side, and a drainage path formed of multiple shallow grooves on the surface that allows rainwater to flow from the above-water side to the below-water side, and the horizontally-tiled roofing material has at least a panel portion that covers the insulating material, an above-water side molded portion that is bent toward the surface side at its above-water end, and an below-water side molded portion that has an engaging portion that is folded back to the back side at its below-water end and an extension piece whose tip is further folded back and extends to the below-water side, and wherein the below-water side molded portions of the joint portions of the horizontally-tiled roofing materials adjacent to each other in the left-right direction are arranged in abutment against the bank of the insulating material arranged in the lower tier. The underwater molding portion, which is arranged in contact with the bank of the lower insulation material, refers to the underwater molding portion at the connection between the horizontal roofing materials that are connected in the flow direction, and corresponds to the hairpin-shaped engaging portion in the illustrated embodiment described below.

[0007] Furthermore, the present invention also proposes a method for installing a horizontal roof, characterized in that in the above-mentioned installation method, the insulation material has a stepped portion that is thick on the above-water side and thin on the below-water side, and in the second step, the below-water side molded portion of the horizontal roof material is engaged with this stepped portion. [Effects of the Invention]

[0008] In the horizontal roof structure of the present invention, the underwater formed portion of the joint of adjacent horizontal roofing materials in the left-right direction is arranged in contact with an above-water side bank formed in the insulating material arranged in the lower level, on the surface of which a drainage path for rainwater to flow is provided, and which rises toward the surface.Therefore, without limiting the structure of the base structure and without using special holding members, the horizontal roofing materials can be installed from the below-water side to the above-water side, or from the above-water side to the below-water side. Therefore, unlike the conventional method of laying horizontal roofing material from below the water surface to above the water surface, rainwater, dust, and fallen leaves do not get in through the boundary between the installed roofing material and the uninstalled roofing material to the backside of the horizontal roofing material, and there is no risk of workers stepping on the installed horizontal roofing material.The backside of the insulation material can be either an existing roof such as slate or a sheathing board, and it can be used for both renovations and new construction.

[0009] Furthermore, when multiple banks of heat insulating material are formed at a regular pitch, the spaces between adjacent banks can also be used as drainage paths for rainwater to flow through. [Brief explanation of the drawings]

[0010] [Figure 1] (a) An oblique view showing the state in which a horizontal roofing material is laid on the right side of the upper tier of two tiers of insulation in a horizontal roof structure of Example 1 of the present invention, (b) An oblique view showing the state in which a horizontal roofing material is laid on top of the upper tier of insulation. [Figure 2] (a) An oblique view showing the state in which the lower layer of insulation is inserted into the upper layer of insulation in a horizontal roof structure of Example 1 of the present invention, and (b) an oblique view showing the state in which two layers of insulation are installed in parallel. [Figure 3] FIG. 2 is a perspective view showing a drainage path formed in two layers of heat insulating material attached in parallel in a horizontal roof structure according to the first embodiment of the present invention. [Figure 4] (a) An oblique view showing the state in which a horizontal roofing material is laid on the middle tier of three tiers of insulation in a horizontal roof structure of Example 1 of the present invention, and (b) an oblique view showing the state in which a horizontal roofing material is laid on top of the middle tier of insulation. [Figure 5](a) An oblique view showing the upper joint portion expanded to show the drainage mechanism on the back side of the horizontal roofing material in the horizontal roof structure of Example 1 of the present invention, (b) an oblique view showing the horizontal roofing materials on the right side of the upper row and the middle row removed and the flow of rainwater indicated by thick arrows. [Figure 6] FIG. 1 is a side view showing an example in which the horizontal roof structure of Example 1 of the present invention is applied to a slate roof substrate. [Figure 7] FIG. 1 is a side view showing an example in which the horizontal roof structure of Example 1 of the present invention is applied to a structure in which eaves gutters are arranged at the eaves tip. DETAILED DESCRIPTION OF THE INVENTION

[0011] The horizontal roof structure of the present invention has a horizontal roofing material arranged on the surface side of an insulating material, the insulating material having a bank formed on the above-water side that rises toward the surface side, and a drainage path formed of multiple shallow grooves on the surface that allows rainwater to flow from the above-water side to the below-water side, the horizontal roofing material having at least a panel portion that covers the insulating material, an above-water side molded portion bent toward the surface side at its above-water end, and an below-water side molded portion having an engaging portion bent back to the back side at its below-water end and an extension piece whose tip is further folded back and extends to the below-water side, and is characterized in that the below-water side molded portions of the joint portions of the horizontal roofing materials adjacent to each other in the left-right direction are arranged in abutment against the bank of the insulating material arranged in the lower level.

[0012] As mentioned above, the insulation material used in the horizontal roof structure of the present invention has a bank formed on the above-water side that rises toward the surface, and has drainage paths formed from multiple shallow grooves on the surface that allow rainwater to flow from the above-water side to the below-water side. This insulating material is preferably a non-permeable material, but this is not necessarily limited to this.It is desirable that the insulating material be made of a low-resilience, non-permeable elastic material, such as the insulating material in the illustrated example described below, and that the shape characteristics of the material can be changed as desired.

[0013] It is also desirable that the insulating material banks be formed at a regular interval, as in the illustrated embodiment described below. The shape of the banks is not limited to square pillows, and there are no particular restrictions on the specific configuration. Furthermore, this insulation material has drainage paths formed from multiple shallow grooves on its surface that allow rainwater to flow from above the water to below the water, but it may also be configured to have multiple raised islands (island-shaped protrusions) of various shapes, as in the illustrated example described below, with the spacing between each raised island forming a drainage path for rainwater to flow. As mentioned above, it is desirable to form multiple banks of insulating material at a regular pitch, but the spaces between adjacent banks can also be used as drainage paths. In this case, part of the raised island is used as a bank. In addition, when the bank is continuous, holes may be provided below the bank and used as drainage paths.

[0014] In addition, this insulation material may have a configuration in which the back side of the insulation material extends above the water at the above-water end and the front side of the insulation material extends below the water, as in the illustrated example described below. In this configuration, the overlapping portion of the insulation material on the above-water side is overlapped with the overlapping receiving portion of the insulation material on the below-water side, so that they are connected in a double-walled manner, allowing rainwater flowing over the surface of the insulation material to flow down from the upper side to the lower side.

[0015] In addition, the horizontal roofing material used in the horizontal roof structure of the present invention is provided with at least a panel portion that covers the insulation material, an above-water side molding portion that is bent toward the front side at its above-water end, an engaging portion that is bent toward the back side at its below-water end, and an below-water side molding portion that has an extension piece whose tip is further bent back and extends toward the below-water side. This horizontal roofing material can be any type of horizontal roofing material in which adjacent horizontal roofing materials are interlocked with each other, and can be made of galvanized steel sheet (registered trademark) or any other type of metal sheet.It can be configured so that it is separated from the insulation material on the back side by a space, or it can be configured so that the insulation material is tightly attached to the back side of the horizontal roofing material, as in the illustrated example described below.

[0016] In the illustrated embodiment described later, the face plate, above-water side molded portion, and below-water side molded portion are configured as an above-water side molded portion bent toward the front surface at the above-water end of the substantially flat face plate, an engaging portion bent back toward the back surface at the below-water end of the above-water side molded portion, and an below-water side molded portion having an extension piece whose tip is further bent back toward the below-water side, but this is not particularly limited to these. Also, in the illustrated embodiment described later, the engaging portion is shaped into a substantially U-shape, and the above-water end of the extension piece formed on the back surface is a hairpin-shaped engaging portion that engages with the above-water side molded portion, and the below-water end of the extension piece is bent toward the back surface, but this is not particularly limited to these.

[0017] In the horizontal roof structure of the present invention, as described above, the underwater molded portions of the joint parts of the horizontal roof panels adjacent to each other in the left-right direction are arranged in contact with the bank of the insulation material arranged in the lower row. The joint portion of horizontal roofing boards refers to the connection portion between the side edges of horizontal roofing boards adjacent to each other in the left-right direction, and may be a butt joint or a structure in which a cover material is arranged. In the illustrated embodiment described below, the length from the bank of the upper insulation material to the bank of the lower insulation material is approximately the same as the length from the above-water side molding portion of the horizontal roof panel to the hairpin-shaped engaging portion, so when the below-water side molding portion (engaging portion) of the horizontal roof panel is positioned in contact with the bank of the lower insulation material, the above-water end of the above-water side molding portion is positioned in contact with the bank of the upper insulation material.

[0018] The horizontal roof structure of the present invention, which has such a configuration, allows horizontal roofing materials to be installed from the below-water side to the above-water side, and from the above-water side to the below-water side, without limiting the structure of the base structure and without using special retaining members. Therefore, unlike the conventional method of laying horizontal roofing material from below the water surface to above the water surface, rainwater, dust, and fallen leaves do not get in through the boundary between the installed roofing material and the uninstalled roofing material to the backside of the horizontal roofing material, and there is no risk of workers stepping on the installed horizontal roofing material.The backside of the insulation material can be either an existing roof such as slate or a sheathing board, and it can be used for both renovations and new construction. [Example]

[0019] Figure 1(a) shows the state in which, in the horizontal roof structure of Example 1, the overlapping portion 26 of the insulation material 2 on the upper side is overlapped with the overlapping receiving portion 25 of the insulation material 2 on the water side shown on the left side of the figure. A horizontal roofing material 1 has already been installed in close contact with the left side of the upper insulation material 2, and another horizontal roofing material 1 is placed on the right side of it, facing upward. The underwater forming portion 13 (engagement portion 133) of this horizontal roofing material 1 is placed in contact with the bank 21 of the insulation material 2 placed in the lower layer. FIG. 1(b) shows a state in which left and right horizontal roofing materials 1, 1 are arranged in a butt-jointed manner so as to cover the heat insulating material 2 on the upper side.

[0020] The heat insulating material 2 used in Example 1 has island-shaped (convex) banks 21 formed on the above-water side that rise toward the surface, as shown in Figure 2(a), and is provided with drainage channels 22 formed of a plurality of shallow grooves on the surface that allow rainwater to flow from above the water to below the water. This heat insulating material 2 is made of a low-resilience, non-water-permeable elastic material (expanded polystyrene). The banks 21 of this heat insulating material 2 are formed in a square pillow shape at a regular pitch, and multiple banks are formed in the length direction. Seven of these square pillow-shaped banks 21 are formed in parallel at a regular pitch, and further banks 21' of half the width are arranged on both outside of them. Further, on the underwater side of each of the seven banks 21, there is formed a wide raised portion 23 that is hexagonal in plan view and a narrow raised portion 24 that is equiangular in plan view. Further, on the underwater side of each of the two banks 21', there is formed a wide raised portion 23' that is parallelogram-shaped in plan view and a narrow raised portion 24' that is trapezoidal in plan view.

[0021] In addition, this insulation material 2 has a configuration in which it has an overlapping receiving portion 25 at the above-water end with the back side extending above the water, and an overlapping portion 26 at the below-water end with the front side extending below the water. 2(b), the overlapping portion 26 of the insulation material 2 on the water side is overlapped with the overlapping receiving portion 25 of the insulation material 2 on the water side, so that they are connected in a clasp-like manner, and rainwater flowing over the surface of the insulation material 2 can flow down from the upper side to the lower side. As mentioned above, the insulation material 2 is made of a low-resilience, non-permeable elastic material, and the overlapping receiving portion 25 has a recessed portion (not shown) formed in it to allow the infiltrating water to flow down to the water side. Furthermore, these insulation materials 2, 2 are arranged side by side on a base (not shown) with a sloping slope, so that rainwater flows from the upper insulation material 2 arranged above the water to the lower insulation material 2 arranged below the water. As shown in FIG. 3, drainage channels 22 formed of a plurality of shallow trenches are formed in the gaps between these banks 21, 21' and other convex portions 23, 23', 24, 24', through which rainwater flows from above the water to below the water.

[0022] As shown in Figures 1(a) and (b), the horizontal roofing material 1 is configured as follows: a face panel portion 11 that covers the insulating material 2; an above-water side molded portion 12 that is bent toward the surface at its above-water end; an approximately C-shaped engaging portion 131 that is bent back toward the back surface at its below-water end; an extension piece 132 that is formed on the back surface and extends toward the below-water side; and a hairpin-shaped engaging portion 133 whose above-water end engages with the above-water side molded portion 12. The joint portion indicated by the symbol 14 connects the side edges of adjacent horizontal roofing materials 1, 1 in the left-right direction. Upwind acts on this joint portion 14 from below the water, and rainwater that seeps in along with the upwind hits the bank 21 and is guided into the drainage path 22 in the left-right direction, then flows down the multiple shallow grooves that form the drainage path 22 and is drained into the insulation material 2 below.

[0023] The horizontal roof structure shown in Figures 4(a) and (b) shows three insulating materials 2 arranged in parallel along the flow direction: upper, middle, and lower, with horizontal roof materials 1 arranged sequentially from the above-water side to the below-water side. That is, in the same figure (a), the horizontal roofing material 1 for the middle row, which faces upward, is positioned so that its below-water side molding portion 13 (engagement portion 133) is abutting against the bank 21 of the insulation material 2 arranged in the lower row in the same figure (b).

[0024] The horizontal roof structure shown in Figures 5(a) and (b) is shown excluding the right side of the top row and the middle row of horizontal roof materials 1 in Figure 5(b) because it is difficult to see the drainage mechanism on the back side of the horizontal roof material 1 in Figure 5(a). As shown by the thick arrow in Figure (b), rainwater blown in from the joint part 14 along with the wind hits the embankment 21 and is guided into the drainage path 22 in the left-right direction, and flows down the multiple shallow grooves that form the drainage path 22 before being drained into the insulation material 2 below. Although not shown in FIGS. 4 and 5, the extension pieces 132 of each horizontal roofing material 1 are fixed by driving in fasteners (1b).

[0025] In this way, in the horizontal roof structure of Example 1 of the present invention, the underwater formed portion 13 (engagement portion 133) of the joint portion 14 of adjacent horizontal roofing materials 1, 1 in the left-right direction is arranged in contact with the bank 21 that rises toward the surface on the abovewater side and is formed on the insulating material 2 arranged in the lower tier, on whose surface a drainage path 22 through which rainwater flows is provided.Therefore, without limiting the structure of the base structure and without using special retaining members, the horizontal roofing material 1 can be installed from the belowwater side to the abovewater side, or from the abovewater side to the belowwater side. Therefore, rainwater, dirt, dust and fallen leaves cannot get into the back of the horizontal roofing material from the boundary between the installed horizontal roofing material 1 and the uninstalled horizontal roofing material, and there is no risk of workers stepping on the installed horizontal roofing material 1.The back side of the insulation material 2 can be either an existing roof such as slate or a sheathing board, and it can be used for both renovations and new construction.

[0026] Furthermore, in this first embodiment, a plurality of banks 21 of the heat insulating material 2 are formed at a constant pitch, so that the spaces between adjacent banks 21, 21 can also be used as drainage paths 22 through which rainwater flows.

[0027] Figure 6 shows an example in which the horizontal roof structure of Example 1 is applied to a slate roof substrate, in which a sheathing material 5 of a predetermined thickness is arranged on the upper surface of a slopingly arranged body 4, and a straight roof 6 (reference number 6b is a waterproof sheet) is laid on the surface of that. In this way, the horizontal roof structure of the present invention can be applied to a slate roof 6 as shown in the figure without using special retaining members, and can be adapted to both renovations and new construction.As mentioned above, the horizontal roof material 1 (symbol 1b is the fixing device) can be easily installed from the belowwater side to the abovewater side, and from the abovewater side to the belowwater side.

[0028] Figure 7 shows an example in which the horizontal roof structure of Example 1 is applied to a structure in which eaves gutters 7 and cover material 8 are arranged at the eaves tip, and a sheathing material 5' of a predetermined thickness is arranged on the upper surface of the inclined body 4', and a stepped roof 6' is laid on its surface.

[0029] The eaves gutter 7 and the cover material 8 will be briefly described below. This eaves gutter 7 has a drainage section 71 consisting of a substantially vertical side surface facing the building, a bottom surface, and a side surface facing the eaves, and the side surface facing the building is supported by an eaves mounting material 9C and an eaves support material 9B attached to the inclined fascia wall surface 4C. The eaves edge mounting member 9C has a fixing portion for the fascia wall surface 4C and a downward-facing locking protrusion, and the eaves edge support member 9B has multiple stages of engagement teeth with which the locking protrusion engages. Furthermore, these components 9B and 9C are rotatably assembled, and a cylindrical fitting member 9D is attached to the portion where the locking protrusion engages with the engagement tooth. The cover material 8 covering the open top has a face plate portion 81 formed with a plurality of drainage recesses 82 that guide rainwater to the eaves gutter 7 on the back side. In Figure 7, symbol 9A indicates the eaves arabesque pattern arranged on the back side of the horizontal roofing material 1 (symbol 1b is the fixing device) at the very edge of the eaves, 4A indicates the structure arranged at an angle on the sheathing material 5', 4B indicates the structure on the back side of that, and 4D indicates the ceiling material. In the horizontal roof structure of FIG. 7, the horizontal roof material 1 can also be installed from the above-water side to the below-water side without using any special holding members. [Explanation of symbols]

[0030] 1 Horizontal roofing material 11 Face plate part 12 Water side molding part 13 Underwater molding section 131 Engagement part 132 Extended piece 133 Engagement part 14 Joint part 1b Fixture 2. Insulation 21,21' Bank 22 Drainage route 23,23' Wide ridge 24,24' narrow ridge 25 Polymer receiving part 26 Polymerization section 4,4' skeleton 5,5' wild wood 6. Slate roof 6' stepped roof 7 Eaves gutter 8 Covering material 82 Drainage recess 9B Eaves support material 9C Eaves mounting material 9D Fitting material

Claims

1. A horizontal roof structure in which a horizontal roof material is arranged on the surface side of the heat insulating material, The heat insulating material has a bank formed on the water surface that rises toward the surface, and has a drainage path formed of a plurality of shallow grooves on the surface that allows rainwater to flow from the water surface to the water surface, The horizontal roofing material comprises a face plate portion that covers at least the insulation material, an above-water side molding portion that is bent toward the surface at its above-water end, an engaging portion that is bent toward the back side at its below-water end, and an under-water side molding portion that has an extension piece whose tip is further bent back and extends toward the below-water side, A horizontal roof structure characterized in that the underwater formed portion of the joint portion of adjacent horizontal roofing materials in the left-right direction is arranged in abutment against the bank of the insulation material arranged in the lower row.

2. 2. A horizontal roof structure according to claim 1, wherein the insulating material banks are formed at regular intervals.

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