JP2020084420A - Construction structure for building board, and repair structure and waterproof member for roof - Google Patents

Abstract

To provide a construction structure for building boards, with which it is easy to determine the positional relation between adjacent building boards during the construction with multiple building boards.SOLUTION: A construction structure for building boards in this invention consists of a sheet member arranged on the front face of a structural bed, multiple building boards 1 which are arranged laterally abutting each other and vertically overlapping step-wise each other at their edges, and a waterproof member 5 arranged on the reverse side of the multiple building boards 1 at the abutting point 6. The waterproof member 5 comprises: a plate-like part 51 arranged between the sheet member and building boards 11, 12 at the abutting point 6; a mark part 52 which is provided on the plate-like part 51 to show the position for the top edge 131 of a lower-side building board 13; and a positioning part 53 which fixes the positions of the bottom edges 111, 121 of the building boards 11, 12 located on the front face of the plate-like part 51.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a construction structure for a building board, a roof repair structure, and a waterproof member. Specifically, the present invention relates to a construction structure including a building board constructed on a sheet member such as a waterproof sheet, a roof repair structure, and a waterproof member used for these.

Patent Document 1 describes a mounting structure of an exterior material including a waterproof and snow stopper. This waterproof/snow stopper is used for a structure in which a plurality of building boards, which are arranged so as to project from each other on the left and right, and whose ends are vertically overlapped with each other, are arranged stepwise. The building board is provided with a horizontal plane stitch portion arranged on the back side of the left and right abutting points of the building board, and a snow stopper having a lower end edge of the stitch portion projecting upward.

JP 2002-21258 A

However, in the mounting structure of the exterior material, the horizontal position of the waterproof and snow stopper is roughly determined by sequentially constructing the building board from either the left or right direction, whereas the vertical position is difficult to determine, and the building board is accurately determined. There was a problem that construction was difficult.

The present invention has been made in view of the above points, and in constructing a plurality of building boards, provides a building board construction structure in which the positional relationship between adjacent building boards is easy to determine, a roof repair structure, and a waterproof member. The purpose is to

The construction structure of a building board according to one aspect of the present invention is a sheet member arranged on the front side of a structure base, and arranged on the front side of the sheet member so as to butt each other in the left-right direction and end in the vertical direction. A construction structure for a building board, comprising: a plurality of building boards in which parts are overlapped with each other and arranged in a stepwise manner; and a waterproof member arranged on the back side of a projecting portion of the plurality of building boards. The waterproof member is a mark indicating the position of the plate-shaped portion disposed between the sheet member and the building board at the butting point, and the upper end of the lower building board provided on the plate-shaped portion. And a positioning portion that positions the lower end of the building board located on the front side of the plate-shaped portion.

In the roof renovation structure according to one aspect of the present invention, in the construction structure of the building board, the structure base is an existing roof, and the building board is a new roof material.

The waterproof member according to one aspect of the present invention is arranged on the front side of the sheet member arranged on the front side of the structure underlayer so as to project from each other in the left-right direction, and has end portions overlapping each other in the vertical direction to form a staircase shape. It is a waterproof member arranged on the back side of a projecting portion of a plurality of arranged building boards. A plate-shaped portion disposed between the sheet member and the building board at the butting point, a mark portion provided on the plate-shaped portion and indicating a position of an upper end of the lower building board, and the plate A positioning portion that positions the lower end of the building board located on the front side of the shaped portion.

The construction structure of a construction board, the roof repair structure, and the waterproof member according to the present invention have an advantage that the positional relationship between adjacent construction boards can be easily determined when constructing a plurality of construction boards.

FIG. 1 is a perspective view showing an embodiment of the construction structure for a building board according to the present invention. FIG. 2 is a sectional view of the same as seen from the eaves direction. FIG. 3A is a perspective view showing the waterproof member of the above. FIG. 3B is a YY cross-sectional view showing the waterproof member of the above. FIG. 3C is a XX cross-sectional view showing the waterproof member of the above. FIG. 4: is a perspective view which shows the construction method same as the above. Drawing 5A-C are some perspective views showing the construction method same as the above. Drawing 6A and Drawing 6B are some perspective views showing the construction method same as the above.

Hereinafter, modes for carrying out the present invention will be described.

FIG. 1 shows a repair structure of an existing roof as a construction structure of the building board of the present embodiment. In this case, the structure base 2 is an existing roof to be renovated, and a new sheet member 3, a building board 1 that is a new roof material, and a waterproof member 5 are arranged on the surface side of the existing roof to form a new roof. To be done.

(Structure base 2)
As shown in FIG. 2, the structure foundation 2 includes a field 21, a lowering material 25 laid on the field 21, and a plurality of existing roofing boards 20 that are roofed on the field 21 via the lowering material 25. It has and.

The lower roofing material 25 is, for example, asphalt roofing, and is formed into a sheet shape. The existing roof plate 20 is a slate roof tile having a substantially rectangular plate shape in a plan view, and is manufactured by molding a cement-based molding material and curing and curing it.

The plurality of existing roofing boards 20 are installed on the field 21 side by side in both the eaves direction and the eaves direction. Here, the eaves ridge direction is the direction of the slope of the roof, and means the direction from the eaves to the ridge and the direction from the ridges to the eaves. The eaves direction is a direction along the eaves on one inclined surface of the roof, and is a lateral direction orthogonal to the eaves direction. That is, the eaves building direction is a direction in which the existing roof boards 20 are arranged in a staircase shape, and the eaves direction is a direction orthogonal to the direction in which the existing roof boards 20 are arranged in a staircase shape.

Among the existing roof boards 20 adjacent to each other in the eaves ridge direction, the existing roof boards 20 on the eaves side are overlapped with the existing roof boards 20 on the ridge side from the front side of the plurality of existing roof boards 20. That is, the plurality of existing roofing boards 20 are constructed in the field 21 by stacking the eaves-ridge-direction end portions (width-direction end portions) of the existing roofing boards 20 adjacent to each other in the eaves-ridge direction in a stepwise manner. In other words, in the existing roofing boards 20 adjacent to each other in the eaves ridge direction, one existing roofing board 20 (existing roofing board 20 on the eaves side) is adjacent to the other side (ridge side) in the other direction. The part of the roof plate 20 (the existing roof plate 20 on the ridge side) on the one side in the adjoining direction overlaps from the front side.

The plurality of existing roof boards 20 are installed on the field 21 in a state where the existing roof boards 20 adjacent to each other in the eaves direction are projected. Here, "butting" means that one end face and the other end face of the existing roof boards 20 adjacent to each other in the eaves direction are butted. The upper surface of the existing roof board 20 includes a covering portion 28 that is covered by the existing roof board 20 adjacent to the ridge side and an exposed portion (exposed portion) 29 that is exposed without being covered by the existing roof board 20 adjacent to the ridge side. I have it.

A fastener 24 such as a nail or a screw penetrates the covering portion 28 of the existing roof plate 20 in the thickness direction. The fixing tool 24 is driven into the field 21 via the underlaying material 25, whereby the existing roof plate 20 is fixed to the field 21.

(Sheet member 3)
The sheet member 3 is a sheet-shaped member having a desired function. In this embodiment, the sheet member 3 is formed of a waterproof sheet. The sheet member 3, which is a waterproof sheet, is similar to the underlaying material 25, and is, for example, asphalt roofing.

(Building board 1)
The building board 1 is a slate roof tile having a substantially rectangular plate shape in a plan view, and is manufactured by molding a cement-based molding material and curing and curing it. The building board 1 is used as a cover material that covers an existing roof. The building board 1 can be different from the existing roof board 20 in the dimension in the eaves direction.

(Waterproof member 5)
The waterproof member 5 is called a discard plate or a joint material, and receives rainwater that has infiltrated from the projecting point 6 of the building board (new roof material) 1 adjacent to the eaves direction. That is, the waterproofness of the roof is ensured by stacking the building boards 1 adjacent to each other in the eaves direction, but depending on the shape of the building board 1, penetration from the projecting points 6 of the adjacent building boards 1 in the eaves direction. The waterproof member 5 is arranged on the back side of the abutting portion 6 with respect to the water.

The waterproof member 5 is made of metal, for example, and is integrally formed by bending a sheet metal. As the sheet metal, a stainless steel plate, a galvalume steel plate (registered trademark), or the like is used. The waterproof member 5 may be made of resin or aluminum.

As shown in FIGS. 3A, 3B, and 3C, the waterproof member 5 has a plate-shaped portion 51, a mark portion 52, a positioning portion 53, a fixing portion 54, and a dam portion 55.

The plate-shaped portion 51 is formed in a rectangular plate shape that is long in the eaves direction and is longer than, for example, the exposed dimension of the building boards 1 to be stacked. The plate-shaped portion 51 is arranged on the front side of the existing roof plate 20 via the sheet member 3. A pair of dam portions 55 protruding toward the front surface side of the plate-shaped portion 51 are formed at both ends of the plate-shaped portion 51 in the eaves direction (both ends along the width direction).

Each dam portion 55 is formed over the entire length of the plate-shaped portion 51 in the eaves ridge direction. Each dam portion 55 protrudes from the end of the plate-shaped portion 51 toward the eaves toward the front side, and from the tip of the vertical piece 551 toward the opposite side of the plate-shaped portion 51 in the eaves-direction. And a horizontal piece 552. On the horizontal pieces 552 of the pair of weir portions 55, the adjoining portions 4 of the building board (new roofing material) 1 adjacent in the eaves direction (ends of the building board 1 in the eaves direction, see FIG. 1) are respectively placed. Therefore, for example, when a downward force is applied to the building board 1 due to the building board 1 being stepped on or the like, the building board 1 can be supported by the waterproof member 5, whereby the building board 1 is deformed. Is suppressed.

The fixing portions 54 are formed in a pair, and one fixing portion 54 is provided for each dam portion 55. Each fixing portion 54 projects from the lateral piece 552 of each dam portion 55 to the opposite side (outside) to the plate-like portion 51 in the eaves direction (horizontal direction). The fixed portion 54 is formed so that its dimension in the eaves ridge direction is shorter than that of the plate-shaped portion 51. The fixed portion 54 is located closer to the eaves than the central portion of the plate-shaped portion 51 in the eaves ridge direction. Further, the fixing portion 54 is provided with a fixing hole 541 penetrating in the thickness direction.

The positioning portion 53 is formed at the eaves side end of the plate-shaped portion 51 so as to project toward the front surface side of the plate-shaped portion 51. The positioning portion 53 is formed over the entire length of the plate-shaped portion 51 in the eaves direction. The positioning part 53 includes a rising piece 531 protruding from the eave-side end of the plate-shaped part 51 toward the front side, and a pressing piece protruding from the tip of the rising part 531 toward the ridge side (the plate-shaped part 51 side). And a piece 532. The positioning portion 53 forms an insertion space 533 between the plate-shaped portion 51, the rising piece 531 and the pressing piece 532. By abutting on the piece 531, the lower end 111 of the building board 1 is positioned in the eaves ridge direction.

When the rainwater falls on the surface of the plate-shaped portion 51 from the abutting portion 6 of the building board 1 adjacent in the eaves direction and flows on the surface of the plate-shaped portion 51, the pair of dam portions 55 and the positioning portion 53 It also has a function of blocking the rainwater and suppressing its spread, and guiding the rainwater to the eaves side of the plate-like portion 51. In addition, you may form the drainage hole in the rising piece 531 and the corner part which the rising piece 531 and the plate-shaped part 51 make.

The mark portion 52 in the present embodiment indicates the position of the upper end 131 of the building board 1 (see FIG. 4). The mark portion 52 is provided on the fixed portion 54. Thereby, a part of the fixed portion 54 can be used also as the mark portion 52, and the structure of the waterproof member 5 can be simplified and multifunctional. Further, since the fixing portion 54 projects from the plate-shaped portion 51 in the eaves direction to the side opposite to the plate-shaped portion 51, the mark portion 52 also extends from the dam portion 55 of the plate-shaped portion 51 in the eaves-direction (horizontal direction). It can be located so as to project to the opposite side (outside), and it is easy to visually recognize it from the front side of the plate-shaped portion 51. In the present embodiment, the mark portion 52 is an eave side edge of the fixed portion 54. When the mark portion 52 is the eave side edge of the fixed portion 54, the mark portion 52 is formed on both sides (two locations) in the eave direction (left-right direction) of the plate-shaped portion 51, and one side (one location). It is easier to visually recognize and the position of the upper end 131 of the building board 1 is easier to show than the case of.

The mark portion 52 may be provided not only on the fixed portion 54 but also on the plate-like portion 51, the dam portion 55, the positioning portion 53, or at a plurality of locations as long as it is visible. Further, the mark portion 52 is not limited to be formed by the edge of the fixed portion 54, but may be displayed with characters or symbols, and may be formed with scoring lines or the like.

(Construction method of building board 1)
In the present embodiment, the construction board (new roof material) 1 is applied to the structure base (existing roof) 2 to form the new roof shown in FIG. 1 as follows.

First, the sheet member 3 is arranged on the front side of the structure base 2. The sheet member 3 is laid so as to cover the entire surface of the structure base 2. Therefore, the plurality of existing roofing materials 20 arranged on the structure base 2 can be entirely covered with the sheet member 3, and thus, when the sheet member 3 is a waterproof sheet, the waterproof performance of the new roof can be obtained. .

Next, the plurality of building boards 1 are sequentially roofed and constructed. The building board 1 is constructed from the eaves side toward the ridge side. That is, after constructing a plurality of building boards 1 in a row in the eaves direction, another plurality of building boards 1 is constructed in a row in the eaves direction on the ridge side of the building boards 1 constructed in one row. In this way, a plurality of building boards 1 are sequentially constructed from the eaves side toward the ridge side. The plurality of building boards 1 can be constructed, for example, in a staggered arrangement, but is not limited to this.

Here, the building boards 1 adjacent to each other in the eaves direction are arranged such that their side ends extending in the eaves direction are abutted against each other. Further, the building boards 1 adjacent to each other in the eaves direction are arranged in a step-like manner with their ends overlapping each other in the vertical direction. That is, the eaves-side end of the ridge-side building board 1 is arranged on the front side of the ridge-side end of the eaves-side building board 1. In such a case, in the adjoining portions 4 of the plurality (three) of building boards 1, it is desired to improve the waterproofness at the projecting portions 6 of the building boards 1 that are adjacent in the eaves direction. Further, it is desired that the building boards 1 adjacent to each other in the eaves ridge direction be easily and accurately arranged with respect to the eaves side building board 1 and the ridge side building board 1. Therefore, in this embodiment, the waterproof member 5 improves waterproofness at the projecting points 6 of the building boards 1 adjacent to each other in the eaves direction, and the positions of the building board 1 on the eaves side and the building board 1 on the ridge side are changed. It is easy and accurate to place them.

That is, as shown in FIG. 5A, first, after constructing a plurality of building boards 1 in a row in the eaves direction, the waterproof member 5 is arranged on the ridge side of the plurality of building boards 1 constructed in a row. At this time, the waterproof member 5 is arranged with the position of the upper end 131 of one of the plurality of building boards 1 constructed in a row as a guide. That is, the building board 13 and the waterproof member 5 are aligned with each other based on the position of the upper end 131 of the building board 13 and the position of the mark portion 52. Here, the building part 13 and the waterproof member 5 can be aligned by applying the mark part 52 to the upper end 131. Further, the building board 13 and the waterproof member 5 can be aligned without contacting the upper end 131 with the mark portion 52. When the mark portion 52 is not in contact with the upper end 131, the mark portion 52 is arranged close to the upper end 131. A portion of the waterproof member 5 that is closer to the eaves than the mark portion 52 (a portion that is closer to the positioning portion 53) is disposed on the front surface side of the building-side end portion of the building board 13. Then, the waterproof member 5 can be fixed by driving or screwing a fixing tool 542 such as a nail or a screw into the structure base 2 from the fixing hole 541 of the fixing portion 54. In addition, the fixed part 54 is between the ridge side end (upper end 131) of the building board 1 newly installed on the eaves side and the eaves side end 39 of the existing roof board 20 on the ridge side of the existing roof covered with the sheet member 3. It may be fixed so as to be accommodated in the space 38.

Next, as shown in FIG. 5B, a building board 11 different from the above is brought close to the fixed waterproof member 5 from the ridge side, and as shown in FIG. 5C, the eaves direction of the insertion space 533 of the fixed waterproof member 5 The eaves side end 115 of the building board 11 is inserted in half, and as shown in FIG. 2, the lower end (eaves side end surface) 111 of the building board 11 is applied to (abuts against) the positioning portion 53, so that the positioning portion 53 Positioning of the building board 11 in the eaves direction. The lower end 111 of the building board 11 can be easily positioned by abutting (contacting) the rising piece 531 of the positioning portion 53. Note that the lower end 111 of the building board 11 does not necessarily have to contact the rising piece 531 and a gap may be provided. In this case, rainwater entering between the lower end 111 and the rising piece 531 can be easily discharged from the gap.

Next, next to the building board 11 arranged as shown in FIGS. 4 and 6A in the eaves direction, another building board 12 is brought closer to the waterproof member 5 on which the building board 11 is positioned from the ridge side, and the waterproof member is fixed. The eaves-side end 125 of the building board 12 is inserted into the remaining eaves-direction half of the insertion space 533 of 5, and the lower end 121 of the building board 12 is aligned with the positioning portion 53 as shown in FIG. 6B, as in the case of the building board 11. The building board 12 is positioned in the direction of the eaves by hitting against. By performing the construction in this way, it is possible to easily align the positions of the eaves-side end faces of the building boards 1 that are located in the eaves direction. In addition, the lower end 121 of the building board 12 does not necessarily have to contact the rising piece 531 and a gap may be provided.

By constructing the plurality of building boards 1 and the plurality of waterproof members 5 in this manner, a new roof as shown in FIG. 1 is formed. Then, in the new roof, at the adjoining portion 4 between the building board 11 and the building board 12 on the ridge side and the building board 13 on the eaves side, the side end portion 119 of the building board 11 extending in the eaves ridge direction and the eaves of the building board 12 The side end part 129 extending in the ridge direction is abutted against the side end part 129, and the side end part 119 and the side end part 129 form the abutting point 6. Further, the building board 11, the building board 12 and the building board 13 are arranged adjacent to each other in the eaves ridge direction, and the eaves side end portion 115 of the building side building board 11 is the ridge side end portion of the eaves side building board 13. The eaves-side end portion 125 of the building board 12 on the ridge side is arranged so as to overlap with the surface of the building board 136 on the surface of the ridge side 136 of the building board 13 on the eaves side.

Then, in the adjoining portion 4, on the back side of the adhering portion 6 between the building board 11 and the building board 12 which are adjacent to each other in the eaves direction, the plate-like portion of the waterproof member 5 is provided between the adhering portion 6 and the sheet member 3. 51 is arranged. Therefore, even if rainwater enters the gap between the side end portion 119 of the building board 11 and the side end portion 129 of the building board 12 generated at the butting point 6, it can be received by the plate-shaped portion 51 and flowed to the eaves side. ..

In addition, at the adjacent portion 4 between the building board 11 and the building board 12 on the ridge side and the building board 13 on the eaves side, the positional relationship between the building board 11 and the building board 12 and the building board 13 can be easily determined by the waterproof member 5. That is, the positional relationship between the building board 13 and the waterproof member 5 is easily determined by the mark portion 52, and the building board 11 and the building board 12 are positioned on the waterproof member 5 positioned with the building board 13. Since the positioning is performed by the portion 53, the positional relationship between the building board 11, the building board 12, and the building board 13 can be easily determined.

(Modification)
The design of the present embodiment described above can be changed as appropriate. For example, the material and shape of each of the structure base, the building board, and the waterproof member can be appropriately changed. For example, the waterproof member may have any shape, such as a rectangle, a square, or a winged shape, as long as it receives water and drains it to the roof material on the eaves side.

In the above, the structure for repairing the existing roof has been described, but the present invention is not limited to this, and the present embodiment can be applied to the case of constructing a new roof. In this case, the structure ground is provided with, for example, a base plate without an existing roofing material.

Further, although the roof structure has been described above, the present invention is not limited to this, and the present embodiment can also be applied to the case of constructing a wall structure. In this case, the structure foundation is a wall foundation, and the building board is a wall material such as an outer wall material or an inner wall material. Further, the building board may be installed on an external structure such as a fence.

Further, in the above, the weir portion is formed integrally with the plate-shaped portion by bending, but the invention is not limited to this, and the weir portion is a separate body from the plate-shaped portion, and the member that has an effect of stopping water is a plate-shaped portion. It may be provided by adhering to. For example, the dam portion may be formed of a resin member such as an Ept sealer or a sealing.

Further, in the above, the waterproof sheet is described as the sheet member, but the sheet member is not limited to this and may be a functional sheet such as a fireproof sheet. When a fireproof sheet is used, the sheet member expands mainly in the thickness direction due to heat from a fire to form a heat insulating layer, which improves the fire resistance of the new roof.

(Summary)
As described above, the construction structure of the building board according to the first aspect has the sheet member (3) arranged on the front side of the structure base (2) and the front side of the sheet member (3) in the left-right direction. On the back side of a plurality of building boards (1), which are arranged in abutting relation to each other and are arranged in a step-like manner with their ends overlapping each other in the vertical direction, and the abutting points (6) of the plurality of building boards (1). A waterproof member (5) arranged. The waterproof member (5) is provided on the plate-like portion (51) arranged between the sheet member (3) and the building board (11, 12) at the butting point (6) and the plate-like portion (51). The mark portion (52) indicating the position of the upper end (131) of the lower building board (13) and the lower ends (111, 121) of the building board (11, 12) located on the front side of the plate-like portion (51). ) Positioning part (53).

According to this aspect, the waterproof member (5) is arranged with the mark portion (52) using the upper end (131) of the building board (13) as a guide, and the positioning portion (53) of the waterproof member (5) serves as the building board. Since the lower ends (111, 121) of (11) and the building board (12) are positioned, the waterproof board (5) adjoins the building board (11), the building board (12), and the vertically adjacent board by the waterproof member (5). It is easy to determine the positional relationship of the building board (13) to be used.

In the construction structure for a building board according to the second aspect, in the first aspect, the waterproof member (5) further has a fixing portion (54) fixed to the structure base (2). The mark portion (52) is provided on the fixed portion (54).

According to this aspect, a part of the fixing portion (54) can also be used as the mark portion (52), and the structure of the waterproof member (5) can be simplified and multifunctional.

In the construction structure for a building board according to a third aspect, in the first or second aspect, the mark portions (52) are provided on both sides in the left-right direction of the plate-shaped portion (51).

According to this aspect, the waterproof member (5) can be aligned with both the mark portions (52) by using the upper end (131) of the building board (13) as a guide, and the arrangement position of the waterproof member (5). Is easy to decide.

In the construction structure for a building board according to a fourth aspect, in the first to third aspects, a weir portion (55) is provided on at least both left and right ends of the surface of the plate portion (51), and a mark portion (52). Is provided outside the weir (55) in the left-right direction.

According to this aspect, since the mark part (52) can be visually recognized outside the dam part (55), it is easy to align the waterproof member (5) with the upper end (131) of the building board (13) as a guide.

In the roof refurbishment structure according to the fifth aspect, in the first to fourth aspects, the structure base (2) is an existing roof and the building board (1) is a new roof material.

According to this aspect, when the existing roof is renovated, the waterproof member (5) is arranged by the mark portion (52) with the upper end (131) of the building board (13) as a new roof material as a guide, and the waterproof member. Since the lower end (111, 121) of the building board (11) and the building board (12), which are new roof materials, is positioned by the positioning portion (53) of (5), the waterproof member (5) is adjacent to the left and right. It is easy to determine the positional relationship between the building board (11), the building board (12), and the vertically adjacent building boards (13).

The waterproof member (5) according to the sixth aspect is disposed on the front side of the sheet member (3) disposed on the front side of the structure underlayer (2) so as to project from each other in the left-right direction, and at the end in the vertical direction. It is a waterproof member (5) arranged on the back side of a projecting portion (6) of a plurality of building boards (1) arranged in a staircase with parts overlapping each other. A plate-like portion (51) arranged between the sheet member (3) and the building board (11, 12) at the butting point (6), and a lower building board provided in the plate-like portion (51) A positioning part (52) that positions the upper end (131) of the (13) and a lower end (111, 121) of the building board (11, 12) located on the front side of the plate-shaped part (51). 53) and.

According to this aspect, the waterproof member (5) is arranged with the mark portion (52) using the upper end (131) of the building board (13) as a guide, and the positioning portion (53) of the waterproof member (5) serves as the building board. Since the lower ends (111, 121) of the (11) and the building board (12) are positioned, the waterproofing member (5) adjoins the building board (11) and the building board (12) that are adjacent in the left-right direction and the building board (12) that is adjacent in the up-down direction. It is easy to determine the positional relationship of the building board (13) to be used.

DESCRIPTION OF SYMBOLS 1 Building board 11 Building board 111 Lower end 12 Building board 121 Lower end 13 Building board 131 Upper end 2 Structure base 3 Sheet member 4 Adjacent part 5 Waterproof member 51 Plate part 52 Mark part 53 Positioning part 54 Fixing part 55 Weir part 6 Projection Location

Claims (6)

A sheet member arranged on the front side of the structure base, and a plurality of constructions arranged on the front side of the sheet member so as to project from each other in the left-right direction and arranged in a stepwise manner with their ends overlapping each other in the vertical direction. A construction structure of a building board, comprising a board and a waterproof member arranged on the back side of the projecting points of the plurality of building boards,
The waterproof member is
A plate-shaped portion disposed between the sheet member and the building board at the butting point,
A mark portion provided on the plate-shaped portion and indicating the position of the upper end of the lower building board,
A construction structure for a building board, comprising: a positioning portion that positions a lower end of the building board located on the front side of the plate-shaped portion. In claim 1,
The waterproof member further has a fixing portion fixed to the structure base,
The mark portion is provided on the fixed portion,
Construction structure of building board. In claim 1 or 2,
The mark portion is provided on both sides in the left-right direction of the plate-shaped portion,
Construction structure of building board. In any one of Claim 1 thru|or 3,
Weirs are provided on at least both ends in the left-right direction of the surface of the plate-like portion,
The mark portion is provided outside the weir portion in the left-right direction,
Construction structure of building board. In any one of Claim 1 thru|or 4,
The structure base is an existing roof,
The building board is a new roof material,
Roof renovation structure. On the front side of the sheet member that is arranged on the front side of the structure base, the projecting points of a plurality of building boards that are arranged so as to project in the left-right direction and are arranged stepwise with their ends overlapping each other in the vertical direction A waterproof member arranged on the back side of the
A plate-shaped portion arranged between the sheet member and the building board at the butting point,
A mark portion provided on the plate-shaped portion and indicating the position of the upper end of the lower building board,
A waterproofing member having a positioning portion for positioning the lower end of the building board located on the front side of the plate-shaped portion.

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