JP5965244B2 - Roofing materials for renovation - Google Patents

Description

  The present invention relates to a roof material for refurbishment that is renovated on the surface of a roof by being attached to an existing roof.

  In recent years, the use of natural energy has been expanded from the viewpoint of safety issues of nuclear power generation, the need for alternative energy to replace fossil fuels, and the movement to use solar cells as household power sources has become active. When using a solar cell as a household power source, a solar cell panel can be attached together with the construction of the roof during construction of the target house, or a solar cell panel can be attached by refurbishing the roof of an existing house .

When refurbishing an existing roof and installing solar panels, rails are installed in a grid along the sloped surface on the roof material to form a frame, and a plurality of solar panels are formed on the formed frame. Construction is performed in which battery panels are arranged and fixed to the frame (see, for example, Patent Document 1).
In addition, a construction in which a support metal fitting is directly fixed on a roof material using a nail or the like, and a solar cell panel is fixed to the support metal fitting (for example, see Patent Document 2).

JP-A-8-70132 JP 2003-286760 A

  However, according to the above-described prior art, depending on the strength of the existing roof material and the roof structure, it may not be able to withstand the weight load of the solar cell and the gantry, and various support members using nails, screws, etc. By fixing, the waterproof layer of the roof structure may be damaged and the waterproofness of the roof may be impaired.

  Therefore, the present invention provides a renovation roofing material that can renovate a roof and install a solar cell without reducing the load due to weight on the existing roof and without impairing the waterproofness of the existing roof. It is an object.

In order to solve the above-described problem, the invention according to claim 1 is configured such that, for example, as shown in FIGS. 1 to 6, a flat roof material 12 is continuously provided along the gradient direction and is adjacent to the gradient direction. In the roof structure in which the roofing materials 12 are partially overlapped with each other, the roofing material 1 for refurbishment that is attached to the roofing material 12 and renovates the roof 11,
A surface plate portion 2 facing the upper surface 12a of the roofing material 12 and having a thin film solar cell 6 provided on a surface 2a opposite to the surface 2b facing the roofing material 12,
The front plate portion 3 is formed by bending the front end portion of the surface plate portion 2 to the roof material 12 side and facing the lower end surface (for example, the end surface 12b) in the gradient direction of the roof material 12;
The front plate portion 3 is formed by bending the front end portion thereof at an angle larger than 90 degrees, and the back plate portion 4 elastically sandwiching the roofing material 12 between the front plate portion 2 and
A bent portion 5 formed by bending a tip portion of the back plate portion 4 in a direction away from the front plate portion 2 ;
The bent portion for forming the bent portion 5 at the front end portion of the back surface plate portion 4 is located at a position higher in the gradient direction than the upper end portion in the gradient direction of the surface plate portion 2 in the roofing material 1 for refurbishment in the lower gradient direction. It is characterized by being set to .

According to the first aspect of the present invention, it is possible to directly attach the solar roof directly on the existing roof 11 only by attaching the roofing material 1 for renovation made of a plate-like member to the roofing material 12 constituting the existing roof 11. Since a battery can be installed, it is not necessary to attach a pedestal, a support fitting, or the like to the roof 11, and the weight load on the roof 11 can be reduced. Further, since the solar cell can be installed on the roof 11 without being fixed with nails or screws, the waterproof property of the roof is not impaired.
Moreover, since the existing roof 11 can be refurbished simply by attaching the refurbishing roof material 1 made of a plate-like member to the existing roof material 12, the roof renovation work is simple and the time required for the work can be shortened. .
Moreover, since the front-end | tip part of the back surface board part 4 of the roof material 1 for refurbishment is bend | folded in the direction spaced apart from the surface board part 2, when attaching the roof material 1 for refurbishment to the existing roof material 12, the roof material 12 The lower end of the gradient direction abuts on the bent portion of the roofing material 1 for refurbishment. When the refurbished roofing material 1 is pushed in with the roofing material 12 in contact with the portion, the back plate 4 is elastically deformed, and the back plate 4 moves in a direction away from the front plate 2. Thereby, the refurbishing roof material 1 can be smoothly attached to the roof material 12 without the back plate 4 of the refurbishing roof material 1 being caught by the roof material 12.

The invention according to claim 2 is the roof material for refurbishment according to claim 1 ,
The front plate portion 3 is provided with a drain hole 7 penetrating in the thickness direction.

According to the invention described in claim 2 , since the drainage hole 7 penetrating in the thickness direction is provided in the front plate portion 3, rainwater or the like is provided in the gap between the existing roofing material 12 and the roofing material 1 for renovation. Even if water enters, it can be discharged from the drain hole 7.
Further, since the drainage hole 7 is provided, when the refurbishment roofing material 1 is attached to the existing roofing material 12, the gradient of the roofing material 12 from the outside of the renovation roofing material 1 through the drainage hole 7. The lower end of the direction can be visually observed. Thereby, the confirmation work of whether the roof material 1 for refurbishment is reliably attached to the existing roof material 12 becomes easy.

The invention according to claim 3 is the roof material for refurbishment according to claim 1 or 2 ,
It is formed of a steel plate.

According to the invention described in claim 3 , since the roof material 1 for refurbishment is formed of a steel plate, the strength and durability are high, and after installation on the existing roof 11, deterioration due to aging hardly occurs.

The invention according to claim 4 is the roof material for refurbishment according to any one of claims 1 to 3 ,
A connector 6a and a wiring 6b connected to the thin-film solar cell 6 are provided at an end portion in the direction orthogonal to the gradient direction on the opposite surface 2a of the surface plate portion 2. To do.

According to the invention described in claim 4 , the connector 6 a and the wiring 6 b connected to the thin film solar cell 6 are provided on the end of the surface plate 2 on the surface 2 a and perpendicular to the gradient direction. Therefore, when a plurality of roofing materials for renovation 1 are installed on the existing roof 11, electrical connection between the refurbishing roofing materials 1 adjacent to each other is easy.

  ADVANTAGE OF THE INVENTION According to this invention, the load by the weight with respect to the existing roof is reduced, and a roof can be renovated and a solar cell can be installed, without impairing the waterproofness of the existing roof.

It is a top view of the house where the roof material for renovation which concerns on this invention was attached to the existing roof. It is a schematic perspective view of the roof where the roof material for renovation was attached to a part of roof material. It is a schematic side view of the roof in which the roof material for renovation was attached to the one part roof material. It is a schematic side view of the roof material for renovation. It is a top view of the sheet metal member before bending. It is a top view which shows the state in which the some roof material for renovation was electrically connected. It is a schematic side view of the roof in which the roof material for renovation of a modification was attached to some roof materials. It is a schematic side view which shows a part of roof material for renovation of a modification.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view showing a roof 11 of a house 10, and the roof 11 is renovated using the refurbishment roof material 1 according to the present invention. In FIG. 1, a roof material 1 for renovation is attached to a roof 11.

As shown in FIGS. 2 to 5, the refurbishing roof material 1 is formed by bending a flat sheet metal member 1 a having a thin film solar cell 6 provided on the surface thereof. Such a refurbished roofing material 1 is attached to an existing roofing material 12 constituting the roof 11 as shown in FIGS. 2 and 3. 2 to 4, the connector 6a and the wiring 6b of the thin film solar cell 6 are omitted.
As shown in FIGS. 1 to 3, the refurbished roofing material 1 according to the present invention includes a flat roofing material 12 such as a slate that is continuously provided along the gradient direction, and the roofing material 12 adjacent to the gradient direction. The present invention is applicable to roof structures that are partially overlapped with each other.

With reference to FIG.4 and FIG.5, the roofing material 1 for remodeling which concerns on this invention is demonstrated. FIG. 4 is a schematic side view of the roofing material 1 for refurbishment, and FIG. 5 is a plan view of the flat sheet metal member 1a before being bent to form the roofing material 1 for refurbishment.
In the following description, the direction in which the roof 11 is inclined and the direction in which the sheet metal member is bent when the refurbishment roofing material 1 is formed is the X direction, and is the direction perpendicular to the X direction. The direction along the longitudinal direction is defined as the Y direction.

  The roof material 1 for refurbishment is formed by bending a flat sheet metal member 1a at three locations indicated by a one-dot chain line in FIG. 5, and includes a front plate portion 2, a front plate portion 3, a back plate portion 4, and a bent portion 5. It is composed of The size and thickness of the roofing material 1 for refurbishment can be appropriately set according to the size of the roofing material 12 to be remodeled and the material of the roofing material 1 for refurbishment, but as an example, 910 mm × 287.5 mm, A sheet metal member 1a having a thickness of 0.35 mm is formed by being bent. Moreover, a steel plate is used as the sheet metal member 1a, whereby the strength and durability of the roof material 12 after refurbishment can be increased.

After being attached to the existing roof material 12, the surface plate portion 2 is disposed so as to face the upper surface 12 a of the roof material 12 and cover the upper surface 12 a.
A thin film solar cell 6 is provided on the surface 2 a of the surface plate 2 opposite to the surface 2 b facing the roof material 12. The thin film solar cell 6 is formed in a film shape, and is attached to the surface 2a of the surface plate portion 2 by bonding or other methods.

  Further, a connector 6 a and a wiring 6 b connected to the thin film solar cell 6 are provided on the surface 2 a of the front plate portion 2 and at both ends in the Y direction. As shown in FIG. 6, the thin-film solar cells 6 of the roof material for refurbishment 1 that are installed next to each other are electrically connected to each other through the connector 6 a and the wiring 6 b. In FIG. 6, the thin film solar cells 6 of the refurbishing roof material 1 adjacent in the Y direction are connected to each other via the connector 6 a and the wiring 6 b. The thin film solar cells 6 may be connected to each other. In this case, the installation positions of the connector 6a and the wiring 6b may not be at both ends in the Y direction on the surface 2a of the surface plate portion 2.

By providing the connector 6a and the wiring 6b at both ends of the surface plate portion 2 in the Y direction, it is easy to electrically connect the thin-film solar cells 6 to each other when installing a plurality of refurbished roofing materials 1 adjacent to each other. Can be.
The connector 6a and the wiring 6b may be provided on one end side in the Y direction. In this case, the thin film solar cell 6 is on the edge 2 on the other end side in the Y direction on the surface 2a of the surface plate portion 2. It may be provided.

After being attached to the existing roofing material 12, the front plate part 3 is disposed so as to face the end surface 12b at the lower end of the roofing material 12 in the gradient direction and cover the end surface 12b.
The front plate portion 3 is formed by bending the front end portion of the surface plate portion 2 by 90 ° toward the end surface 12b of the roof material 12, whereby the front plate portion 3 is attached to the roof after the refurbishment roof material 1 is attached. It faces the end surface 12b of the material 12. Further, the front plate portion 3 is provided with drain holes 7 penetrating in the thickness direction, and a plurality of the drain holes 7 are formed at predetermined intervals along the Y direction. By providing the water drain hole 7 in the front plate portion 3, the rainwater can be discharged even if rainwater or the like enters the gap between the refurbished roofing material 1 and the existing roofing material 12. Moreover, when attaching the roofing material 1 for renovation to the existing roofing material 12, since the end surface 12b of the roofing material 12 can be visually observed through the drain hole 7, attachment completion of the roofing material 1 for renovation is easy. I can confirm.

  In addition, although the drain hole 7 was provided in the front plate part 3, the drain hole 7 may be provided in the back plate part 4. In this case, the drain hole 7 is provided in the vicinity of the front plate portion 3 in the back plate portion 4. By providing the drain hole 7 in the back plate 4, even if rainwater enters the gap between the roof material 1 for refurbishment and the existing roof material 12, the rainwater can be discharged more efficiently. Can do. Moreover, since the drainage hole 7 is provided in the back surface plate portion 4 and the drainage hole 7 is hidden on the lower surface 12c side of the roofing material 12 after the refurbishment roofing material 1 is installed, the design is improved. be able to.

After being attached to the existing roofing material 12, the back plate part 4 is disposed so as to face the lower surface 12c of the roofing material 12 and cover a part of the lower surface 12c.
The back surface plate portion 4 is formed by bending the front end portion of the front surface plate portion 3 toward the lower surface 12c of the roofing material 12, and the bending angle A (see FIG. 4) is in the range of 90 to 135 °. . Thereby, after attaching the roof material 1 for refurbishment, the back surface plate part 4 opposes the lower surface 12c of the roof material 12, and the roof material 12 can be clamped between the front surface plate part 2. Moreover, in this embodiment , the front-surface board part 2 and the back-surface board part 4 are made larger than 90 degrees by the bending angle by which the front-end | tip part of the front-surface board part 3 is bent when the back surface board part 4 is formed. door is present What is Do not increase the force for holding the roof material 12.
The front plate portion 2, the front plate portion 3 and the back plate portion 4 form a concave portion 8.

After being attached to the existing roofing material 12, the bent portion 5 faces the lower surface 12c of the roofing material 12 and is arranged away from the lower surface 12c.
The bent portion 5 is formed by bending the front end portion of the back surface plate portion 4 in a direction away from the front surface plate portion 2, whereby the bent portion 5 becomes the lower surface 12 c of the roof material 12 after the refurbishment roof material 1 is attached. It will be in the state separated from. By forming such a bent portion 5, when attaching the roof material 1 for refurbishment to the roof material 12, the lower end portion in the gradient direction of the roof material 12 abuts on the bent portion 5, and the roof material 12 and the bent portion When the roof material 1 for renovation is pushed upward in the gradient direction with the 5 in contact, the back plate 4 is elastically deformed, and the back plate 4 and the bent portion 5 move away from the front plate 2. To do. Thereby, when attaching the roof material 1 for refurbishment to the roof material 12, the back surface plate part 4 of the roof material 12 for refurbishment is not caught on the lower end part of the roof material 12 in the gradient direction, and the back surface plate part 4 is the surface plate part 2. The lower end of the roof material 12 in the gradient direction is smoothly inserted into the recess 8 of the roof material 1 for refurbishment.

The refurbished roofing material 1 configured as described above is attached to the existing roofing material 12 as shown in FIGS. 2 and 3.
The existing roofing materials 12 are arranged so as to partially overlap each other in the gradient direction, and each roofing material 12 is provided with the upper end portion in the gradient direction fixed to the field plate 13. Therefore, the lower end portion in the gradient direction of each roof material 12 can move in the vertical direction with the upper end portion in the gradient direction as a fulcrum.
When attaching the roofing material 1 for refurbishment to the target roofing material 12, the target roofing material 12 is lifted with the lower end in the gradient direction of the roofing material 12 adjacent to the upper side in the gradient direction of the target roofing material 12. Installation work is performed on That is, with the roof material 12 adjacent to the upper side being lifted, the refurbishment roof material 1 is disposed on the lower end side in the gradient direction of the target roof material 12 and pushed upward from below along the gradient direction. As a result, the lower end of the roof material 12 in the gradient direction comes into contact with the bent portion 5 of the roof material 1 for refurbishment. Since the roof material for refurbishment 1 is pushed up with the lower end in the gradient direction of the roof material 12 in contact with the bent portion 5, the back plate portion 4 is elastically deformed, and the back plate portion 4 and the bent portion 5 are exposed. It moves in a direction away from the face plate 2. Further, the refurbishment roof material 1 is pushed upward, whereby the lower end of the roof material 12 in the gradient direction is completely accommodated in the recess 8 of the refurbishment roof material 1. When the target roofing material 12 is completely accommodated in the recess 8, the lower end of the roofing material 12 in the gradient direction is visually confirmed through the drainage hole 7. To stop. In this way, the roofing material 1 for refurbishment is fitted and attached to the target roofing material 12, and the force that the elastically deformed backside plate portion 4 tries to restore is restored between the front surface plate portion 2 and the backside plate portion 4. The roofing material 12 is sandwiched between the roofing material 12 and the refurbishing roofing material 1 is fixed to the roofing material 12.
Furthermore, a part of the surface plate part 2 of the roof material 1 for refurbishment and the target roof are returned by returning the roof material 12 adjacent to the upper side, which has been lifted at the start of the installation of the roof material 1 for refurbishment, to the original position. The roof material 12 adjacent to the upper part overlaps a part of the upper surface 12 a of the material 12. Thereby, the surface board part 2 of the roof material 1 for refurbishment is hold | suppressed by the weight of the roof material 12 adjacent upwards, and the roof material 1 for refurbishment can be fixed more strongly with respect to the roof material 12 of object.

  When a plurality of roof materials for renovation 1 are attached to the existing roof 11, the roof material 12 after renovation becomes heavy and difficult to lift, so the refurbishment roof material 1 is attached from the lower side to the upper side in the gradient direction. It is preferable to continue. Thereby, the refurbishment work of the roof 11 becomes easier.

As described above, according to the present embodiment, the roof material for refurbishment 1 includes the surface plate portion 2 in which the thin film solar cell 6 is provided on one surface 2a, and the front plate formed by bending the front end portion of the surface plate portion 2. It is comprised by plate-shaped members, such as the back plate part 4 formed by bending the front-end | tip part of the part 3 and the front-surface board part 3, and a solar cell can be installed only by attaching to the existing roofing material 12. FIG. By being configured in this way, it is possible to directly install a solar cell on the existing roof 11 without attaching a pedestal, a support metal fitting or the like to the roof 11, thereby reducing the weight load on the roof 11. can do. Further, since the solar cell can be installed on the roof 11 without being fixed with nails, screws, or the like, there is no possibility of damaging the waterproofness of the roof.
Moreover, since the existing roofing material 12 can be renovated only by attaching the renovating roofing material 1 configured in a plate shape to the existing roofing material 12, the roof renovation work is simple and the time required for the work is shortened. it can.

Further, since the front plate portion 3 of the roof material 1 for refurbishment is provided with a drain hole 7 penetrating in the thickness direction, rainwater or the like enters the gap between the existing roof material 12 and the roof material 1 for refurbishment. However, it can be discharged from the drain hole 7.
Further, since the drainage hole 7 is provided, when the refurbishment roofing material 1 is attached to the existing roofing material 12, the gradient of the roofing material 12 from the outside of the renovation roofing material 1 through the drainage hole 7. The lower end of the direction can be visually observed. Thereby, the confirmation work of whether the roof material 1 for renovation is reliably attached to the existing roof material 12 becomes easy.

  Moreover, since the front-end | tip part of the back surface board part 4 of the roof material 1 for refurbishment is bend | folded in the direction away from the surface board part 2, the bending part 5 is formed, Therefore The roof material 1 for refurbishment is made into the existing roof material 12 When attaching, the lower end part of the roof material 12 in the gradient direction comes into contact with the bent part 5. When the roof material for remodeling 1 is pushed in with the lower end portion of the roof material 12 in contact with the bent portion 5, the back plate portion 4 is elastically deformed, and the back plate portion 4 and the bent portion 5 are separated from the front plate portion 2. Move in the direction of separation. Thereby, the refurbishing roof material 1 can be smoothly attached to the roof material 12 without the back plate 4 of the refurbishing roof material 1 being caught by the roof material 12.

  Moreover, since the roof material 1 for refurbishment is formed with a steel plate, the strength and durability of the roof material 1 for refurbishment are high, and after attaching to the existing roof material 12, it does not deteriorate easily by aging.

Moreover, since the connector 6a and the wiring 6b which are connected to the thin film solar cell 6 are provided in the edge part on the surface 2a of the surface plate part 2 and orthogonal to the gradient direction, a plurality of roof materials for refurbishment When 1 is attached to the existing roofing material 12, the electrical connection between the adjacent roofing materials 1 for refurbishment is easy.
Moreover, since the connector 6a and the wiring 6b are provided in the edge part on the surface 2a, the space on the surface 2a can be used efficiently.

<Modification>
Below, the modification of the roof material 1 for refurbishment is demonstrated with reference to FIG.7 and FIG.8. FIG. 7 is a schematic side view of the roof 11 in a state where the modified roofing material 21 of the modified example is attached to a part of the roofing material 12. FIG. 8 is a schematic side view showing a part of the roofing material 21 for refurbishment. FIG. 8A shows a state after the roofing material 21 for refurbishment is attached to the roofing material 12. FIG. 8B shows a state before the refurbishment roof material 21 is completely fixed to the roof material 12. The configuration other than that described below is substantially the same as that of the roof material for refurbishment 1 of the above embodiment, and the detailed description thereof is omitted.

  As shown in FIG.7 and FIG.8, the roof material 21 for remodeling of the modification is comprised from the surface board part 22, the front-surface board part 23, and the back surface board part 24, and the back surface board part 24 is planar plate shape. It is configured. In other words, the roof material 21 for refurbishment in the modified example is not bent at the tip end portion of the back plate 24 and is not provided with a bent portion.

The refurbishing roof material 21 is attached and fixed as described below.
That is, the roof material for remodeling 21 is arranged on the lower end side in the gradient direction of the target roof material 12 in a state where the lower end portion in the gradient direction of the roof material 12 adjacent to the upper side in the gradient direction of the roof material 12 to be attached is lifted. . Then, when the target roofing material 12 is accommodated in the recess of the refurbishing roofing material 21 by hitting the front plate 23 of the refurbishing roofing material 21 with a hammer or the like along the gradient direction, FIG. As shown, the end surface 12 b of the roofing material 12 is in contact with the bent portions 25 of the front plate portion 22 and the front plate portion 23 and the bent portions 26 of the front plate portion 23 and the rear plate portion 24. In this state, when the front plate portion 23 of the roof material for refurbishment 21 is continuously struck and the roof material 12 is pushed in to the back, the bent portions 25 and 26 are crushed, and as shown in FIG. Is deformed so as to be in close contact with the roofing material 12. The modified roofing material 21 is completely fixed to the roofing material 12 due to the elasticity of the modified roofing material 21 after deformation.
In addition, although the front-end | tip part of the back surface board part 24 becomes a shape spaced apart from the roofing material 12 by deform | transforming the roofing material 21 for remodeling (refer FIG.8 (b)), on the said roofing material 12, When the roof material 12 adjacent to the upper side in the gradient direction overlaps, the back plate portion 24 is pressed and the back plate portion 24 comes into close contact with the roof material 12.

  According to the above modification, the clearance gap between the roofing material 21 for refurbishment and the roofing material 12 can be made small, and inflow of rainwater etc. to the said clearance gap can be suppressed. Moreover, since the clearance gap between the roofing material 21 for refurbishment and the roofing material 12 is small, the thickness of the roofing material 12 after attachment of the roofing material 21 for renovation is suppressed small, and the design property of the roof 11 after attachment is high.

  In the above-described embodiment, slate is used as the flat roof material, but metal or wood may be used.

  Moreover, in the above-described embodiment, the drain hole is provided in the front plate portion of the roof material for refurbishment, but the drain hole may not be provided. In addition, the drain hole has a rectangular shape and a plurality of drain holes are provided in a direction orthogonal to the folding direction of the roofing material for refurbishment, but the drain hole may have any shape and number.

  Further, in the above-described embodiment, the roof material for renovation is formed of a steel plate. However, if the roof material can be refurbished by being attached to the roof material, it may be formed of other sheet metal members such as an iron plate. It may be good and may be formed with other materials which are not metals.

  In the above-described embodiment, the connector and the wiring connected to the thin film solar cell are provided on the surface of the surface plate portion of the roof material for refurbishment and at the end in the direction orthogonal to the gradient direction. However, the connector and the wiring may be provided at the end in the gradient direction, or may be provided on the back surface side of the front plate or the front plate portion.

DESCRIPTION OF SYMBOLS 1 Roof material for renovation 1a Sheet metal member 2 Surface plate part 2a Surface 2b Surface 3 Front plate part 4 Back plate part 5 Bending part 6 Thin film solar cell 6a Connector 6b Wiring 7 Drain hole 8 Recessed part 10 Housing 11 Roof 12 Roofing material 12a Upper surface 12b End surface 12c Lower surface 13 Base plate 21 Roof material for refurbishment 22 Front plate portion 23 Front plate portion 24 Back plate portion 25 Folded portion 26 Folded portion

Claims (4)

In a roof structure in which flat roof materials are continuously provided along a gradient direction, and the roof materials adjacent to each other in the gradient direction are partially overlapped with each other, the roof is renovated by being attached to the roof material. Renovation roofing material,
Opposing the top surface of the roofing material, a surface plate portion provided with a thin film solar cell on the surface opposite to the surface facing the roofing material;
A front plate portion formed by bending a front end portion of the surface plate portion and facing a lower end surface in a gradient direction of the roof material;
The front plate portion is formed by bending the front plate portion at an angle greater than 90 degrees toward the front plate portion, and elastically sandwiching the roof material between the front plate portion,
A bent portion formed by bending the front end portion of the back plate portion in a direction away from the front plate portion ,
The bent portion for forming the bent portion at the front end portion of the back plate portion is set to be located at a position higher in the gradient direction than the upper end portion in the gradient direction of the surface plate portion in the roof material for refurbishment in the lower gradient direction. renovated roofing, characterized in that there. The roof material for refurbishment according to claim 1, wherein a drainage hole penetrating in the thickness direction is provided in the front plate portion . The roof material for refurbishment according to claim 1 or 2, wherein the roof material is a steel plate . The connector and wiring connected to the said thin film solar cell are provided in the edge part in the direction orthogonal to a gradient direction on the surface of the said other side of the said surface board part from Claim 1 characterized by the above-mentioned. The roof material for renovation according to any one of 3 above.

Images