JP2020076204A - Roof material and construction structure of roof using therewith - Google Patents

Abstract

To provide a roof material easy in construction and excellent in air permeability.SOLUTION: A roof material 100 includes a substantially thin plate-like decorative surface material 110, and a substantially thin plate-like support material 150 provided on a substrate side of the decorative surface material 110. A space part penetrating in the eaves ridge direction is formed to the support material 150. A ridge side fitting part 112 and an eaves side fitting part 114 for fitting the ridge side and the eaves side of the roof material 100 positioned in the eaves ridge direction are provided on a front surface of the ridge side and a rear surface of the eaves side, respectively, on the decorative surface material 110, with the direction from the decorative surface material 110 to the support material 150 as the front/rear direction. The decorative surface material 110 and the support material 150 are abutted to each other in the ridge side directly or via a separate member, and are structured to allow formation of a separation space S(2) between the rear surface of the decorative surface material 110 and the front surface of the support material 150 on the eaves side.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a roof material used for a roof of a building (including a structure) and a construction structure of a roof using the roof material, and in particular, is constructed by stacking the roof material on the base of the roof in a staircase direction. The present invention relates to a roof material that is easy to construct and has excellent air permeability, and a roof construction structure using the roof material.

  In the roof of a building, an air flow is created in the attic to remove hot air or moisture in the attic and to prevent corrosion of the attic such as wood. Generally, when constructing a roof, after fitting a heat insulating material between the rafters, constructing a base plate, installing a ventilation rafter on it to obtain a ventilation layer, and further laying a base plate. Are known. Such a construction method requires a lot of man-hours for the construction, which is a factor of increasing the construction cost. In order to solve such a problem, utility model registration No. 3089386 (patent document 1) discloses a double heat insulating material with a ventilation base material for a roof.

  Further, recently, metal roofing materials have been widely adopted, and the metal roofing materials have been highly evaluated for their various design characteristics (surface shape, color) in addition to their lightness and construction efficiency. Traditionally, the back side of such metal roofing material is lined with wood wool, synthetic resin foam, etc., which improves the high thermal conductivity and sound transmission of the metal roofing material, The purpose is to prevent dew condensation between the base plate. In this case, the metal roofing material is often constructed in a state in which no gap is provided between the metal roofing material and the base of the roof. In that case, it is difficult to ensure air permeability. As disclosed in Patent Document 1, a rafter is used to prevent dew condensation on the roof and to diffuse moisture by ventilation, and a space is provided between the base material of the attic and the roof material to achieve air flow. Is possible. However, even with a construction method using such a metal roofing material, the construction takes a lot of man-hours, which causes a rise in the construction cost. In order to solve such a problem, Japanese Patent Laying-Open No. 2003-343043 (Patent Document 2) discloses a roofing material in which a ventilation member having a communication space is formed on the back surface.

Utility model registration No. 3089386 gazette JP, 2003-343043, A

  By the way, the roof of a building has a plurality of plate-shaped roof materials (not limited to metal) formed in a substantially rectangular shape, the roof substrate in the vertical direction (eave building direction) and the horizontal direction (girder). It can be constructed by laying in the direction). In such a roof structure, as disclosed in Patent Document 2, two roof materials that are adjacent to each other in the longitudinal direction of the roof (eave building direction), that is, in the inclination direction of the roof, have their ends fitted together. (The male connecting portion and the female connecting portion in Patent Document 2 are fitted to each other).

  The roofing material disclosed in Patent Document 2 is provided with waterproofness, heat insulation, sound absorption, cushioning, fireproofing, dew condensation prevention, etc. on the base side of a metal roofing material (all performances are not required). A non-woven fabric, a synthetic resin foam sheet, etc. are provided in contact with each other, and a ventilation member having a length of about 1/5 of the roof material in the eaves direction is provided on the ridge side instead of the sheet. The roofing material disclosed in Patent Document 2 is between a roofing material and a base material (more specifically, the roofing material is configured after connecting two roofing materials that are roofed so as to be adjacent to each other in the roof inclination direction). A ventilation space is formed in a portion other than the ventilation member, which is between the sheet and the base material. However, the roof material provided with such a ventilation member has the following problems.

<< Problem 1 >> It is necessary to shorten the length of the seat in the eaves direction in order to prevent the seat from interfering with the work of connecting the male connecting portion and the female connecting portion. There is a possibility that the heat insulation performance of the seat cannot be fully expressed. On the other hand, in order to fully develop the heat insulation performance of the seat, it is necessary to lengthen the eaves direction of the seat, but such a long length Then, the work may be unfavorable because the sheet interferes with the work of connecting the male connecting part and the female connecting part, and the construction is not easy.
<Problem 2> The ventilation space is a free space that does not obstruct the flow of air in the vertical direction of the roof (in the direction of the eaves) or in the horizontal direction of the roof (in the direction of the girders), but it does allow air to flow in either direction. Since the flow is not rectified, there is a possibility that a sufficient air flow cannot be realized and sufficient air permeability cannot be realized.

  The present invention was developed in view of the above-mentioned problems of the prior art, and the object thereof is a roof material that is constructed by being stacked stepwise in the eaves direction on the base of the roof. Therefore, it is an object of the present invention to provide a roof material that is easy to construct and has excellent air permeability, and a roof construction structure using the roof material.

In order to achieve the above object, the roofing material according to the present invention takes the following technical means.
That is, the roofing material according to an aspect of the present invention is a roofing material that is constructed on the base of the roof, the roofing material is constructed by stacking in a stepwise manner in the eaves direction, and the roofing material is A substantially thin plate-shaped decorative surface material, and a substantially thin plate-shaped support material provided on the base side of the decorative surface material, the support material is formed with a space portion penetrating in the eaves direction, The direction from the decorative surface material to the support material is the front and back direction, and in the decorative surface material, one of the roof materials to be installed on the eaves side and the other roof material to be installed on the ridge side are formed in a stepwise manner. When connecting, the ridge-side fitting part and the eaves-side fitting part for fitting the ridge-side and the eaves-side of the roofing materials located in the eaves-ridge direction to each other are the ridge-side surface and the eaves-side The decorative surface material and the support material are respectively provided on the back surface, and abut on the ridge side directly or via another member, and between the back surface of the decorative surface material and the surface of the support material on the eaves side. It is characterized in that a separated space can be formed in the.

Preferably, the length of the support member in the eaves direction may be shorter than the length of the decorative surface material in the eaves direction.
More preferably, the eaves-side end portion of the support member and the eaves-side fitting portion can be configured not to overlap in the front-back direction.
More preferably, the roofing material is a member that suppresses heat transfer from the building interior to the building exterior or the heat transfer from the building exterior to the building of the building in which the roofing material is constructed, is a base material more than the decorative surface material. It can be configured to be provided on the side.

  Further, a roof construction structure according to another aspect of the present invention is a roof construction structure using any of the above-mentioned roof materials, wherein the roof material on the ridge side is a roof on the eaves side in the eaves ridge direction. The roof material on the ridge side is fixed to the base in a state where the roof material on the ridge side is connected to the roof material, and the space portion of the roof material on the eave side and the space portion of the roof material on the ridge side are formed to communicate with each other. A communication space is formed in the roof eaves direction, and the communication space communicates with outside air at least on the ridge side of the roof.

  According to the present invention, it is a roofing material that is constructed by being stacked stepwise in the direction of the eaves on the base of the roof, which is easy to construct and has excellent breathability, and the roofing material is used. It is possible to provide a construction structure for a roof that has been removed.

It is the (A) perspective view of the building which shows the construction structure of the roof using the roofing material which concerns on embodiment of this invention, (B) It is a partially expanded view. It is a detailed perspective view of the construction structure of the roof shown in FIG. It is a detailed sectional view of the construction structure of the roof shown in FIG. The roof material which concerns on embodiment of this invention WHEREIN: (A) Sectional drawing of the roof material which can form the separated space S (1), (B) Sectional drawing of the roof material which can form the separated space S (2). , (C) is a cross-sectional view of the decorative surface material, and (D) is a cross-sectional view of the support material. The support member shown in FIG. 4 (D) is an overall perspective view of (A), (B) an enlarged perspective view of a region 5B shown in FIG. 5 (A), and (C) an arrow 5C direction shown in FIG. 5 (A). It is the side view seen from. It is a figure for demonstrating the construction method of the roof using the roofing material which concerns on embodiment of this invention. It is a figure for demonstrating the roofing material which concerns on the 1st modification of embodiment of this invention, Comprising: (A) The side view seen from the arrow 5C direction shown to FIG. 5 (A), (B) figure FIG. 7 is an exploded view of 7 (A). It is a figure for demonstrating the roofing material which concerns on the 2nd modification of embodiment of this invention, Comprising: (A) The side view seen from the arrow 5C direction shown to FIG. 5 (A), (B) figure 8 (A) is an exploded view. FIG. It is a figure for demonstrating the construction structure of the roof which concerns on the modification of embodiment of this invention, Comprising: (A) The side view seen from the arrow 5C direction shown in FIG. 5 (A), (B) FIG. It is an exploded view of (A).

Hereinafter, a roof material 100 and a roof construction structure using the roof material 100 according to the present invention will be described in detail with reference to the drawings as an embodiment of the present invention.
This roofing material 100 is a roofing material used for a roof of a building (including a structure), for example, as shown in FIG. 1 (A), and is provided on a base of the roof (a base material 200 described later in detail). It is a roof material to be constructed. Here, in FIG. 1 (A), all the members (for example, eaves drainage, keraba drainage, etc.) related to the roof construction structure are described because they are not directly related to the present invention. Do not mean. Although the roofing materials 100 are arranged in a staggered manner in FIG. 1A, the construction structure of the roof according to the present invention is not limited to such an arrangement.

  As shown in FIG. 1 (A) and FIG. 1 (B), this roofing material 100 is generally constructed by stacking a plurality of roofing materials 100 in a stepwise manner in the eaves ridge direction. Furthermore, also in the girder direction, the end portions of the plurality of roofing materials 100 are overlapped and constructed. In this way, a plurality of roofing materials 100 are constructed in the eaves ridge direction (sequentially from the eaves side to the ridge side in the eaves ridge direction) and in the girder direction (sequentially from one end to the other end in the girder direction). The construction structure is completed. That is, when the roofing material 100 for one row is sequentially installed from one end to the other end in the girder direction on the most eaves side (first from the eaves side: N = 1) in the eaves direction (sequentially roofing), For the N-th (N = 2, 3, ...) From the eaves side in the ridge direction, one row of roofing material 100 is sequentially installed from one end to the other end (or vice versa) in the girder direction. Repeat until you reach the ridge. In addition, when the roofing material 100 for one row is installed (roofed) in the girder direction, the roofing may be performed from the center instead of from any one end to the other end.

  In addition, the eave side, the ridge side, the eave ridge direction, and the girder direction, which are generally used in the roof construction structure, are shown in FIG. In addition, a white arrow A (1) indicates a flow of air flowing through a space portion SA provided in a support member 150 described later and penetrating in the eaves ridge direction. It shows that the communication space formed by communicating with the space portion SA of the roof material 100 on the side is formed over the eaves ridge direction of the roof. Further, this communication space communicates with the outside air at least on the ridge side of the roof. For example, but not limited to, the air flows as shown by a white arrow A (2) and the ventilation agent V Communicates with the outside (outside air) of the building.

Here, although not limited, the roof material 100 according to the present invention has a schematic size of about 2000 mm to 3000 mm in the girder direction, about 300 mm to 400 mm in the eaves direction, and about 10 mm to 20 mm in thickness. is there.
Hereinafter, a detailed structure of the roof material 100 and a detailed construction structure of a roof using the roof material 100 will be described.
<Structure of roofing material>
The roofing material 100 according to the present embodiment used for such a roof construction structure will be described in detail below with reference to FIGS. 2 to 5.

FIG. 2 is a detailed perspective view of a roof construction structure using the roof material 100, FIG. 3 is a detailed cross-sectional view of the construction structure, FIG. 4 is a detailed view of the roof material 100, and FIG. A detailed view of the support material 150 that constitutes the roof material 100 is shown.
As shown in these drawings, as described above, the roofing material 100 is laid on the base material 200 of the roof in a stepwise manner in the direction of the eaves. Here, the base material 200 is more specifically shown as an example of the one composed of the waterproof sheet 210 and the ground plate 230, but not all of them are essential components, and also include other components. It doesn't matter. In addition, the roof material according to the present invention is not limited to being adopted at the time of new construction of a building, and is also suitably used at the time of reforming the roof of an existing building, and a new roof is provided on the existing roof material. The base material of the roof material according to the present invention is limited as described above, because it can be suitably adopted for the lap roof construction for constructing the material and the roofing construction for removing the existing roof material and constructing the new roof material. Not a thing.

The roofing material 100 includes a substantially thin plate-shaped decorative surface material 110 and a substantially thin plate-shaped support material provided on the base material 200 side of the decorative surface material 110 (a backing material because it is provided on the back side of the decorative surface material). Sometimes referred to as) 150. The supporting member 150 is provided with a space SA that penetrates in the eaves direction.
The direction from the decorative surface material 110 to the support material 150 is the front and back direction, and one decorative roof material 100 is installed on the eaves side and another roof material 100 is installed on the ridge side. When the roof members 100 are connected in the shape of a ridge, the ridge-side fitting portion 112 and the eaves-side fitting portion 114 for fitting the ridge side and the eave side of the roofing materials 100 located in the eaves ridge direction to each other are provided on the ridge side surface. And on the back of the eaves respectively. The most distinctive feature is that the decorative surface material 110 and the support material 150 abut on the ridge side directly or through another member in the front and back directions described above (see FIGS. 4A and 4B). In (), they are in direct contact with each other and are joined together), and on the eaves side, a separated space can be formed between the back surface of the decorative facing material 110 and the surface of the support material 150.

Here, the separated space will be described with reference to FIG. 4A is a cross-sectional view of the roof material 100 in which the separated space S (1) is formed, and FIG. 4 (B) is a roof material 100 in which the separated space S (2) is formed. 4C is a cross-sectional view of the decorative surface material 110, and FIG. 4D is a cross-sectional view of the support material 150.
First, basically, as shown in FIG. 4 (A), the fact that the separated space is formed means that the decorative surface material 110 and the support material 150 are located on the eaves side. It shows that a separated space S (1) is formed between the back surface and the surface of the support material 150. The separated space S (1) is connected to the roof material 100 on the eaves side (which means the roof material 100 after being fixed to the base material 200 by the fastening material 120 such as nails or wood screws) which has been constructed (constructed). The eaves side fitting portion 114 of the roof material 100 on the ridge side (during the operation) to the work (work in the X direction of the arrow) for fitting the ridge side fitting portion 112 of the fixed roof material 100. It is a space of a size that does not become (in particular, a size that includes the separation length (length in the eaves direction) between the decorative surface material 110 and the support material 150). That is, the separated space S (1) has a size that allows the fixed ridge-side fitting portion 112 to escape and fit the eaves-side fitting portion 114 into the ridge-side fitting portion 112. For example, the size thereof is larger than that of the ridge-side fitting portion 112.

  Next, as shown in FIG. 4 (B), the fact that the separated space can be formed means that, in the positional relationship between the decorative facing material 110 and the support material 150 on the eaves side, It is shown that a space S (2) can be formed between the surface of the support material 150 and the support material 150. As shown in FIG. 4 (B), when the support material 150 having flexibility is adopted (when the plastic corrugated board described later is adopted as the support material 150, this flexibility is provided) On the eaves side (due to the flexibility of the support material 150 and the support material 150 being in contact with and bonded to the decorative surface material 110 on the ridge side), the arrow R (1) direction, the arrow R (2) Can be freely deformed in the direction. The separated space S (2) is a roof to which the eaves-side fitting portion 114 of the ridge-side roofing material 100 to be connected to the eaves-side roofing material 100, which is already constructed and fixed to the base material 200, is fixed. When fitting to the ridge-side fitting portion 112 of the material 100, the eaves side of the support material 150 is deformed to the arrow R (1) side or the arrow R (2) to allow the support material 150 to escape and to be fitted. It is configured so that a space having a size that does not interfere with the above (in particular, a size including a separation length between the decorative surface material 110 and the support material 150) can be formed. That is, the separated space S (2) is fixed to the ridge side by deforming the eaves side of the support member 150 in the arrow R (1) direction and the arrow R (2) direction at least during the fitting work. It is formed so that the fitting portion 112 can be released so that the eaves-side fitting portion 114 can be fitted into the ridge-side fitting portion 112. For example, the maximum size is At least larger than the ridge-side fitting portion 112. Further, in the case of the roofing material 100 shown in FIG. 4 (B), the size of the space S (2) other than during the fitting work is arbitrary.

In addition, in the roof material 100 that employs the flexible support material 150 shown in FIG. 4B, even if an operator rides on the roof material 100, the support material 150 absorbs the impact. Therefore, the possibility that the roof material 100 (more specifically, the decorative surface material 110) will be depressed can be suppressed.
In addition, in the roofing material 100 that employs the flexible support material 150 shown in FIG. 4B, the length H ( 2) can be lengthened. It is preferable to increase the length H (2) of the support material 150 in the roof material 100 in the eaves ridge direction because the characteristics of the support material 150 (such as air permeability, drainage property, and reinforcement function described later) can be improved. ..

  Whether the roofing material 100 shown in FIG. 4A or the roofing material 100 shown in FIG. 4B is used, as shown in FIG. 4C and FIG. Has a length H (2) in the eaves ridge direction that is shorter than the length H (1) of the facing material 110 in the eaves ridge direction, and the eaves-side end of the support material 150 and the eaves-side fitting portion 114 are in the front-back direction. Do not overlap. Furthermore, it is preferable that the length H (2) of the supporting member 150 in the eaves direction is 1/2 or more of the length H (1) of the facing material 110 in the eaves direction. Further, the length H (2) of the supporting member 150 in the eaves direction is preferably 50% or more and 95% or less of the length H (1) of the facing material 110 in the eaves direction, and further 65% or more 80 % Or less is particularly preferable. While exhibiting the effect 1 described below, the roof material 100 (more specifically, the decorative surface material 110) may be dented due to the reinforcing function of the support material 150 even when an operator rides on the roof material 100. This is because it is possible to suppress In Patent Document 2, after connecting the roof material 100 on the eaves side and the roof material 100 on the ridge side, between the roof material and the base material (more specifically, between the sheet and the base material constituting the roof material). Therefore, a ventilation space of approximately the same size as the thickness of the ventilation member is formed in the area other than the ventilation member. There was a possibility of dents, and construction was not easy. However, according to the present embodiment, the work of constructing the roof material 100 is easy.

  The roof construction structure using the roofing material 100 having such a configuration has a structure in which the roofing material 100 on the ridge side is overlapped and connected to the roofing material 100 on the eaves side in the eaves building direction. The roof material 100 is fixed to the base material 200, and the space SA of the roof material 100 on the eaves side (of the support material 150) and the space SA of the roof material 100 on the ridge side (of the support material 150) communicate with each other. The formed communication space is formed in the roof eaves direction, and the communication space communicates with the outside air at least on the ridge side of the roof. When the communication space is formed so as to communicate with the outside air on both the ridge side and the eaves side of the roof, a more preferable ventilation effect can be exhibited. As described above, the air flowing in the communication space formed along the eaves direction of the roof is shown by the white arrow A (1), and this communication space is on the ridge side of the roof (for example, via the ventilation member V). The flow of air in the state where it communicates with the outside air is shown by an outline arrow A (2). The roofing material 100 having such a structure will be described in more detail. As described above, the roofing material 100 is configured to include the substantially thin plate-shaped decorative surface material 110 and the substantially thin plate-shaped support material 150.

The decorative surface material 110 is formed by bending a substantially thin plate member into a predetermined shape, including a ridge-side fitting portion 112 provided on the front surface of the ridge and an eaves-side fitting portion 114 provided on the rear surface of the eaves. Has been formed. Here, the decorative surface material 110 is not limited to, iron, aluminum, copper, stainless steel, titanium, aluminum / zinc alloy plated steel plate, enamel steel plate, clad steel plate, laminated steel plate (PVC steel plate, etc.), sandwich. One of steel plates (damping steel plates, etc.) (including metal color plates coated in various colors), or synthetic resin plate materials such as vinyl chloride resin, polycarbonate resin, etc. (synthesized by coating these in various colors (Including resin color plate), is adopted. Among these, a metal thin plate material (thickness of about 0.3 mm to 0.4 mm) is preferably adopted, and, for example, an aluminum / zinc alloy plated steel sheet or this aluminum / zinc alloy plated steel sheet has a rust preventive effect by magnesium. The applied steel sheet is more preferably adopted and is formed into various shapes by roll forming, press forming, extrusion forming, notch forming, or the like. It is also preferable to provide a pilot hole for the fastening material 120 on the side of the ridge side fitting portion 112. The fastening members 120 are preferably provided at intervals of 400 mm to 500 mm in the girder direction.

  A foamed polyethylene having a thickness of about 3 mm is usually provided as a backing material on the base material 200 side of the decorative surface material 110. This foamed polyethylene suppresses heat transfer from the inside of the building of the building where the roofing material is constructed to the outside of the building or from the outside of the building to the inside of the building. In the roofing material 100 according to the present invention, instead of such a foam polyethylene backing material, a support material 150 having a space SA penetrating in the eaves direction is adopted.

  As shown in FIGS. 4 (A) and 4 (B), the decorative surface material 110 and the support material 150 are in direct contact with each other on the ridge side and are joined by an adhesive or the like. 110 and the support material 150 are formed as the roof material 100 which is one structure. When the decorative surface material 110 and the support material 150 are in direct contact with each other on the ridge side, radiant heat from the outside air, such as solar heat, which is transmitted to the decorative surface material 110 is discharged at a location near the surface of the roof material due to the ventilation effect. Be heated. Therefore, it is possible to suppress heat transfer from the outside of the building where the roofing material 100 is constructed to the inside of the building. The adhesive preferably has heat resistance and water resistance.

  Referring to FIG. 5, a space portion SA penetrating in the eaves direction is formed, joined to the decorative surface material 110 on the ridge side, and separated on the eaves side (separated space S (1) or separated space S). The supporting material 150 itself, which is configured to be capable of forming (2), will be described in detail. 5A is an overall perspective view of the support member 150, FIG. 5B is an enlarged perspective view of the region 5B shown in FIG. 5A, and FIG. 5C is FIG. 5A. The side view seen from the arrow 5C direction shown in FIG.

  As shown in these drawings, the support member 150 includes a top plate 152 and a bottom plate 154, and a plurality of rib members 156 that are set up substantially perpendicularly to the top plate 152 and the bottom plate 154 and substantially parallel to the eaves direction, and the space SA Are formed as spaces between the rib members 156. Since the rib members 156 are formed along the eaves ridge direction of the support member 150, the eaves ridge direction shape of the support member 150 has the same cross-sectional shape. It should be noted that it may be configured with only one of the top plate 152 and the bottom plate 154.

  The support material 150 preferably has water resistance, and for example, is preferably formed by including a synthetic resin molded product (particularly a polyolefin resin) that is lightweight and has high workability in addition to water resistance. A material preferably used for the support material 150 is, for example, a plastic corrugated board (hereinafter sometimes referred to as a plastic step). This plastic step has a corrugated core (flute) between two paper boards (liners), while the corrugated board is almost vertical to support two plastic boards (liners). A large number of ribs (corresponding to a rib member 156 described later) are formed between the two plastic plates, and the cross section thereof is like the mouth of a harmonica. The strength of the plastic step is expressed by the large number of ribs.

Although not limited to the plastic steps, since the support member 150 has the space portion SA as described above, air is present in the space portion SA, so that it is difficult to transfer heat and the roofing material 100 is constructed. It suppresses heat transfer from the inside of the building to the outside of the building or from the outside of the building to the inside of the building, prevents dew condensation, and exhibits effects such as sound insulation.
Further, since the supporting members 150 of all the roofing materials 100 to be installed on the roof are provided with the space portion SA and the air flows through the space portion SA, the roof material extends in the eaves direction (continuous in the eaves direction. A communication space can be formed by the plurality of space portions SA to form a flow of air toward the eaves. In particular, as shown in FIG. 3, even if there is a gap G between the support material 150 of the eaves side roof material 100 and the support material 150 of the ridge side roof material 100 connected thereto, the ridge side roof material Since the opening surface of the space portion SA of the supporting member 150 in 100 and the opening surface of the space portion SA of the supporting member 150 in the eaves-side roofing material 100 face each other, the roof having sufficient air permeability A communication space is formed across the eaves of the building. When the gap G is formed, the position where the opening surface of the space portion SA of the support material 150 in the roof material 100 on the ridge side and the opening surface of the space portion SA of the support material 150 in the eaves side roof material 100 face each other. Even if they are not aligned, a communication space is formed across the eaves of the roof. Therefore, sufficient air permeability is exhibited.

  In this case, in the space portion SA formed between the rib members 156, since air is positively rectified toward the eaves, a sufficient air flow can be realized and sufficient air permeability can be realized. it can. That is, since the ventilation space disclosed in Patent Document 2 does not rectify the air flow from the eaves direction to the ridge direction, it was not possible to form a preferable air flow in the roof material, but this support material was used. According to 150, sufficient air permeability can be realized.

  The rib member 156 also has a function of reinforcing the strength of the support member 150 in the front-back direction. Here, in order to exhibit the preferable air permeability, drainage property (suppressing generation of surface tension) and reinforcing function required for the support material 150, A shown in FIG. 5 is preferably 2 mm or more and 3 mm to 4 mm. , A <B, and W is 2 mm or less. The thickness t (U) of the top plate 152 and the thickness t (D) of the bottom plate 154 are not particularly limited, but both are preferably about 0.3 mm to 0.7 mm.

The roofing material 100 having such a structure can exhibit the following operational effects.
<< Function and Effect 1 >> Since the separated space S (1) is formed between the back surface of the decorative facing material 110 and the surface of the support material 150 on the eaves side, the separated space S (2) can be formed. Therefore, in the work of fitting the eaves side fitting portion 114 to the ridge side fitting portion 112, the fixed ridge side fitting portion 112 is released and the eaves side fitting portion 114 is moved to the ridge side fitting portion. The workability is preferable because it can be easily fitted to the roof 112, and the work of constructing the roofing material 100 is easy.
<< Function and Effect 2 >> The space SA included in the support member 150 is formed over the entire length of the support member 150 in the eaves direction by the rib member 156 along the eaves direction of the roof, and thus has a rectifying function. Since a communication space extending over the eaves of the roof is formed, the air is positively rectified toward the eaves, a sufficient air flow can be realized, and sufficient ventilation can be realized. In addition, since the ventilation space for such ventilation is a space for draining rainwater soaked into the base material 200 side of the roof material 100 from the ridge side to the eaves side, while realizing sufficient ventilation, Drainage can be realized. In order to improve this drainage performance, this communication space formed along the eaves of the roof is formed so that it communicates with the outside air on the eaves side of the roof (so that rainwater is drained outside the building). Is particularly preferable.

<Roof material construction method>
A method of constructing the roofing material 100 according to the present embodiment, which has the above-described structure and can exhibit the above-described effects, will be described with reference to FIGS. 2 and 6. In addition, below, the construction method using the roofing material 100 shown in FIG. 4 (B) is demonstrated.
As shown in FIG. 6, the eaves side fitting portion 114 of the roof material 100 on the ridge side to be connected to the roofing material 100 on the eaves after being constructed and fixed to the base material 200 The work of fitting the ridge-side fitting portion 112 will be described as a construction method. That is, a method of constructing one roofing material 100 for one row in the girder direction for one step in the eaves direction will be described.

The eave side of the support material 150 of the roof material 100 on the ridge side is deformed in the arrow R (1) direction to form a separated space S (2) between the back surface of the decorative surface material 110 and the front surface of the support material 150. Let At this time, the separation space S (2) has a size (or larger) that allows the eaves-side fitting portion 114 to fit into the ridge-side fitting portion 112, and is larger than the ridge-side fitting portion 112, for example. ..
In this way, the eaves side of the support material 150 of the roof material 100 on the ridge side is deformed in the direction of the arrow R (1) to form the separated space S (2), and the construction is completed and fixed to the base material 200. The eaves side fitting part 114 of the ridge side roofing material 100 to be connected to the eaves side roofing material 100 after being moved is moved in the arrow X direction, and the ridge side fitting part 112 of the fixed roofing material 100 is moved. To fit. In this case, since the eaves side of the support member 150 of the roof member 100 on the ridge side is deformed to the arrow R (1) side, the support member 150 is released and does not interfere with the fitting work. Thereafter, on the ridge side of the ridge-side roof material 100, the ridge-side roof material 100 is fixed to the base material 200 by a fastening material 120 such as a nail or a wood screw.

  Such fitting and fastening work is sequentially performed from one end to the other end of the roofing material 100 for one row in the girder direction on the most eaves side (first from the eaves side: N = 1) in the eaves building direction. If you do (sequentially roofing), for one row of roofing material 100 in the girder direction from the eaves side in the eaves direction (N = 2, 3, ...), construct one roofing material from one end to the other end. Repeat until you reach the ridge side. When this repeated work is completed, the work for constructing the entire roof is completed, and the construction structure for the roof according to the present embodiment is completed.

The roof construction structure having such a structure can exhibit the following operational effects.
<< Function and Effect 3 >> A communication space formed by the space SA of the eaves side roof material 100 and the space SA of the ridge side roof material 100 communicating with each other is formed in the roof eaves direction, and Further, since the communication space communicates with the outside air at least on the ridge side of the roof, air flows as indicated by the white arrow A (1), and on the ridge side as indicated by the white arrow A (2). Since the air flows into the building and is discharged to the outside (outside air) of the building by the ventilation agent V, in combination with the favorable flowability, the hot air accumulated in the attic, the humidity from the room, etc. are suitably discharged from the building. can do. Further, since such a communication space serves as a space for draining rainwater soaked into the base material 200 side of the roof material 100 from the ridge side to the eaves side, sufficient drainage can be realized.

As described above, according to the roof material 100 according to the present embodiment and the roof construction structure using the roof material 100, the roof constructed in a stepwise manner on the base of the roof in the eaves direction. It is possible to provide a roofing material and a roof construction structure that are made of wood, are easy to construct, and have excellent breathability and drainage.
<Modification>
Hereinafter, a roof material 300 (first modification) and a roof material 400 (second modification) according to the modification of the present embodiment, and a roof construction structure according to the modification of the present embodiment will be described. .. A feature common to these modified examples is a member for suppressing heat transfer from the building interior to the building exterior or the heat transfer from the building exterior to the building in the roof material or the roof construction structure in which the roof material is constructed. (Hereinafter, it may be described as a heat transfer suppressing member) is provided on the base side of the decorative surface material. Suppressing heat transfer includes heat shield and heat insulation. In the following description, the same components as those of the roof material or the roof construction structure according to the above-described embodiment are denoted by the same reference numerals. The description thereof will not be repeated here because it is redundant with the above description.

FIG. 7 shows a view for explaining a roof material 300 according to the first modification. FIG. 7 (A) is a side view of the roofing material 300 seen from the direction of arrow 5C shown in FIG. 5 (A), and FIG. 7 (B) is an exploded view of FIG. 7 (A).
As shown in FIG. 7, the roofing material 300 includes a support material 350 instead of the support material 150 and a heat shield layer 360 as a heat transfer suppressing member. The support member 350 has the same structure except that the top plate 152 of the support member 150 is not provided. Then, the heat shield layer 360 is provided so as to follow the shape of the space portion SA between the rib members 156 of the support material 350 (not to block the space portion SA). This heat shield layer 360 employs, for example, a plastic step from which the top plate 152 is removed as the support material 350, and the open surface of the plastic step (the surface on the side of the top plate 152, which does not exist) has a heat shield property. It is also preferable to form the sheet by providing a sheet made of a material or applying a heat-shielding paint or the like. In addition, a plastic step with the bottom plate 154 removed is used as the support member 350, and a sheet formed of a material having a heat shield property is provided on the open surface of the plastic step (the surface on the bottom plate 154 side, which does not exist). The space SA may be formed between the top plate 152 and the heat shield layer 360 by applying a heat shield paint or the like. The space SA is preferably formed above the heat shield layer 360. This is because the heat shielded by the heat shield layer 360 is discharged to the outside air through the space SA. Further, the decorative surface material 110 and the heat shield layer 360 formed on the support material 350 are partially (at the ridge side of the roof material 300 and where the support material 350 is not provided with the space SA). Direct contact is desirable. This is because radiant heat such as solar heat transmitted from the outside air to the roof material is blocked at a position near the surface of the roof material, and heat transfer from the building exterior where the roof material 300 is constructed to the building interior can be suppressed. ..

According to the roof material 300 according to the first modified example, in addition to the function and effect of the roof material 100 according to the embodiment, heat transfer from the building interior of the building where the roof material 300 is constructed to the building exterior or the building exterior. The heat transfer from the inside to the building can be suppressed.
Next, FIG. 8 shows a diagram for explaining a roof material 400 according to a second modification. FIG. 8 (A) is a side view of the roofing material 400 seen from the direction of arrow 5C shown in FIG. 5 (A), and FIG. 8 (B) is an exploded view of FIG. 8 (A).

  As shown in FIG. 8, the roof material 400 includes a heat insulating layer 460 as a heat transfer suppressing member in addition to the decorative surface material 110 and the support material 150. The decorative surface material 110 and the support material 150 have the same structure as the roof material 100 described above. Then, a heat insulating layer 460 is provided on the base material 200 side of the support material 150. For this heat insulating layer 460, for example, it is also preferable to adopt a heat insulating material formed of a material having a heat insulating property. The heat insulating layer 460 may be provided between the decorative surface material 110 and the support material 150.

According to the roof material 400 according to the second modified example, in addition to the effect of the roof material 100 according to the embodiment, heat transfer from the building interior of the building where the roof material 400 is constructed to the building exterior or the building exterior. The heat transfer from the inside to the building can be suppressed.
Further, FIG. 9 shows a diagram for explaining a roof construction structure according to a modification of the present embodiment. FIG. 9A is a side view of the roof construction structure as viewed from the direction of arrow 5C shown in FIG. 5A, and FIG. 9B is an exploded view of FIG. 9A.

As shown in FIG. 9, in this roof construction structure, the roof material 100 described above is used as a roof material, and the roof material 100 is transferred between the roof material 100 and the base material 200 (not as the structure of the roof material). A heat insulating layer 560 is provided as a heat suppressing member. For example, as the heat insulating layer 560, similarly to the heat insulating layer 460, it is also preferable to adopt a heat insulating material formed of a material having heat insulating properties.
According to the roof construction structure according to this modification, in addition to the effect of the roof construction structure using the roof material 100 according to the embodiment, the transmission from the inside of the building where the roof material is constructed to the outside of the building. It is possible to suppress heat or heat transfer from the building exterior to the building interior. Further, since the base material 200 is flat, the roof construction structure according to this modification is less likely to suffer from thermal insulation defects.

  It should be understood that the embodiments disclosed this time are exemplifications in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

  The present invention is preferably applied to a roof material and a roof construction structure which are constructed by being stacked stepwise in the eaves direction on the groundwork of the roof of the building, which is easy to construct and excellent in breathability. Particularly preferred.

100 roofing material 110 decorative surface material 112 ridge side fitting part 114 eaves side fitting part 120 fastening material 150 support material 152 top plate 154 bottom plate 156 rib material 200 base material 210 waterproof sheet 230 field board 300 according to the first modification Roofing material 400 Roofing material according to second modification

Claims (5)

A roofing material to be constructed on the base of the roof, wherein the roofing material is constructed in a stepwise manner in the direction of the eaves,
The roof material includes a substantially thin plate-shaped decorative surface material, and a substantially thin plate-shaped support material provided on the base side of the decorative surface material,
The support member is formed with a space portion penetrating in the eaves direction,
The direction from the decorative surface material to the support material is the front and back direction,
In the decorative surface material, when the one roofing material to be constructed on the eaves side and the other roofing material to be constructed on the ridge side are connected in a stepwise manner, the roofing materials located in the eaves direction are connected to each other. The ridge-side fitting part and the eaves-side fitting part for fitting the ridge-side and the eaves-side of each other are provided on the ridge-side front surface and the eaves-side back surface, respectively.
The decorative surface material and the support material are in contact with each other on the ridge side directly or via another member, and a space can be formed between the back surface of the decorative surface material and the surface of the support material on the eaves side. A roofing material, which is characterized in that   The roof material according to claim 1, wherein a length of the support material in the eaves direction is shorter than a length of the decorative surface material in the eaves direction.   The roofing material according to claim 1 or 2, wherein the eaves-side end portion of the support member and the eaves-side fitting portion do not overlap in the front-back direction.   The roof material is a member that suppresses heat transfer from the building interior to the building exterior or the heat transfer from the building exterior to the building of the building where the roof material is constructed, is provided on the base side of the decorative surface material. The roofing material according to any one of claims 1 to 3, which is characterized by being. A structure for constructing a roof using the roof material according to any one of claims 1 to 4,
In the eaves direction, in a state where the roof material on the ridge side is overlapped and connected to the roof material on the eaves, the roof material on the ridge side is fixed to the base,
A communication space formed by communicating the space portion of the roof material on the eaves side and the space portion of the roof material on the ridge side is formed across the roof eaves direction,
The roof construction structure, wherein the communication space communicates with outside air at least on the ridge side of the roof.

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