JP2022137426A - Waterproof structure of building, and construction method of waterproof structure - Google Patents

Abstract

To provide a waterproof structure of a building and a construction method of a waterproof structure capable of facilitating a construction work.SOLUTION: A building comprises an outer wall face portion 25, and a lean-to roof portion 18 downwardly obliquely extending to a side separated from the outer wall face portion 25. In a boundary portion between the outer wall face portion 25 and the lean-to roof portion 18, an opening area 27 between both 18 and 25 extends along the boundary portion. On the lean-to roof portion 18, a verge water drip material 39 extending along a verge 19 is provided, and an end of the verge water drip material 39 enters an end at a side end face 29 side of the opening area 27. A waterproof structure comprises a short-sized short accessory 60 covering a gap between an upper face of the verge water drip material 39 and a lower end face 28 of the outer wall face portion 25 in the opening area 27. The short accessory 60 includes a protruding portion 65 protruding from the verge water drip material 39 toward an opposite side to the side end face 29 side. A flashing material 50 is provided so as to overlap with the protruding portion 65 in a state where an end in a longer direction is in contact with a side face of the verge water drip material 39.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a waterproof structure for a building and a construction method for the waterproof structure.

In a building such as a house, a shed may be provided as a roof. The shed is provided, for example, with a downward inclination from the outer wall of the building. In such buildings, flashing materials are usually provided along the boundary between the shed and the outer wall (see Patent Document 1, for example). The rain flashing material is an elongated material that extends along the boundary, and is provided so as to cover the opening formed between the shed and the outer wall. This prevents rainwater from entering through the boundary between the shed and the outer wall.

JP 2020-94369 A

By the way, in the above-mentioned building, a draining material extending along the shed may be provided on the shed. In that case, it is assumed that the end of the lashing material is positioned at the opening between the shed and the outer wall, more specifically at the end of the opening. In such a case, the connection between the end of the ditching material and the end of the rain flashing material becomes a problem.

Therefore, as a countermeasure against the above problem, for example, it is conceivable to process (for example, cut) the end portions of the lashing material and the end portions of the rain flashing material on-site. However, since both the draining material and the rain flashing material have complicated cross-sectional shapes, it is assumed that it is difficult to process them on site, and it is thought that construction errors are likely to occur.

Therefore, it is conceivable to process the end portions of the rain flashing material in advance in a factory so as to match the shape of the end portions of the draining material. For example, it is conceivable to process the end portion of the rain flashing material into a shape that allows it to be placed in the area above the fluffing material in the opening. This eliminates the need to process the ends of the flashing material on site.

However, when arranging the rain flashing material that has undergone end processing in this way in the opening between the outer wall and the shed on site, first, place the processed end portion above the draining material in the opening. It is necessary to insert it into the area and position the flashing while it is inserted. Therefore, it is considered that the installation work of the rain flashing material becomes difficult. In particular, since the rain flashing material is a long material, it is difficult to handle, and it is conceivable that the work of arranging the rain flashing material is accompanied by great difficulty.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a waterproof structure for a building and a method for constructing the waterproof structure, which can facilitate construction work.

In order to solve the above-mentioned problems, a waterproof structure for a building according to a first aspect of the present invention comprises an outer wall surface section in which a plurality of outer wall surface materials are arranged side by side, and a shed extending downwardly and away from the outer wall surface section. and a boundary portion between the outer wall surface portion and the lower roof portion, an opening region between them having a predetermined vertical width and extending along the boundary portion, and the outer wall surface portion is formed with a first end face that defines the upper end of the opening region and a second end face that is perpendicular to the first end face and defines the side end of the opening region; A verge draining material extending along the verge of the lower roof is provided above, and the end of the verge draining material enters the end of the opening area on the second end face side. A waterproof structure for a building, which is applied and has an elongated shape extending along the boundary and comprising a flashing material covering the opening area, wherein the upper surface of the verge flashing material and the first end surface in the opening area and a short accessory that covers the space between and, and the short accessory has an extension part that extends further than the draining material toward the side opposite to the second end surface side. The rain flashing material is provided so as to be overlapped with the extending portion with its longitudinal end in contact with the side surface of the breech draining material.

According to the first aspect of the invention, the end portion of the draining material enters the end portion of the outer wall surface portion on the second end surface side in the opening region between the outer wall surface portion and the lower roof portion. In such a configuration, the space between the upper surface of the draining material and the first end surface of the outer wall surface in the opening area is covered with the short accessory. In this case, since the short accessories are short, they can be easily handled and installed. Also, the short accessory extends further than the draining material toward the side opposite to the second end surface side of the outer wall surface. The rain flashing material is provided so as to be overlapped with the extended portion of the short accessory in a state in which the longitudinal end thereof is in contact with the side surface of the draining material. As a result, the side opposite to the second end surface of the opening area can be covered with the rain flashing material. Also, in this case, when installing the rain flashing material, the end of the rain flashing material can be placed against the side of the draining material if it is installed, so the installation work is easy, and the end processing of the rain flashing material is unnecessary. Therefore, facilitation of construction work can be achieved.

A waterproof structure for a building according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the rain flashing material is superimposed on the extended portion of the short accessory from the outdoor side.

According to the second invention, when the rain flashing material is installed, first the short accessory is attached first, and then the rain flashing material can be installed while abutting the extended portion of the short accessory from the outdoor side. Therefore, the construction work can be made even easier.

A waterproof structure for a building according to a third invention is characterized in that, in the first or second invention, the short accessory is formed in a rectangular plate shape, and has a first side portion arranged along the first end face. , a second side portion arranged along the second end surface, and a third side portion arranged along the upper surface of the bristle draining material, and the second side portion in the short accessory The side is recessed toward the indoor side to form a first concave portion forming a groove-shaped seal filling portion for filling a sealing material together with the second end face.

According to the third aspect of the invention, the second side portion of the short accessory along the second end surface of the outer wall surface portion is recessed toward the indoor side, so that the second side portion side is groove-shaped together with the second end surface. is a first concave portion forming a seal filling portion of the . Thus, by filling the seal filling portion with the sealing material, it is possible to seal between the second end surface and the short accessory. In this case, since the sealed portion becomes clear, reliable waterproofing can be performed.

A waterproof structure for a building according to a fourth invention is the waterproof structure of the building according to the third invention, wherein the first side portion side of the short accessory is recessed toward the indoor side, so that the groove-like structure is filled with a sealing material together with the first end face. The second concave portion forming the seal filling portion of the second concave portion is characterized in that it is formed continuously with the first concave portion.

According to the fourth invention, the first side portion of the short accessory along the first end surface of the outer wall surface portion is recessed toward the indoor side, whereby the first side portion side is groove-shaped together with the first end surface. and a second concave portion forming a seal filling portion of the . Thus, by filling the sealing material into the seal filling portion, it is possible to seal between the first end surface and the short accessory. Moreover, since the second recessed portion is formed continuously with the first recessed portion, the seal-filling portions formed by the respective recessed portions can be connected to each other. Therefore, the sealing material can be continuously filled in each seal-filled portion, and more reliable waterproofing can be performed.

A waterproof structure for a building according to a fifth aspect of the invention is characterized in that, in the fourth aspect of the invention, the third side portion of the short accessory is recessed toward the indoor side, so that the sealant is filled together with the upper surface of the draining material. It is a third concave portion forming a groove-shaped seal filling portion, and the third concave portion is formed continuously with the first concave portion.

According to the fifth invention, the third side portion of the short accessory, which is arranged along the upper surface of the fluffing material, is recessed toward the indoor side. and a third concave portion forming a groove-shaped seal filling portion together. As a result, it is possible to seal between the draining material and the short accessories by filling the seal filling portion with the sealing material. Also, since the third recessed portion is formed continuously with the first recessed portion, in this case, the first recessed portion, the second recessed portion, and the third recessed portion are formed continuously. As a result, the seal-filled portions formed by the recessed portions can be connected to each other, so that the seal-filled portions can be continuously filled with the sealing material. Therefore, more reliable waterproofing can be performed.

The waterproof structure construction method of the sixth invention is a waterproof structure construction method applied when constructing the waterproof structure of the building of the second invention, wherein the gable drainer is placed on the lower roof in advance. a short accessory installation step of installing the short accessories so as to cover between the upper surface of the mulberry draining material and the first end surface in the opening area in the state where the material is installed; a rain flashing material installation step of placing the rain flashing material over the extended portion of the short accessory from the outdoor side in a state where the longitudinal end portion is in contact with the side surface of the bristle draining material; characterized by comprising

According to the sixth invention, the short accessories are installed first, and then the rain guards are installed. When installing the rain flashing material, if the end of the rain flashing material is placed against the side of the draining material, the installation work is easy, and the end processing of the rain flashing material is unnecessary. Therefore, facilitation of construction work can be achieved. In addition, since the rain flashing material can be placed against the extended portion of the short accessory from the outside, the construction work can be facilitated in this respect as well.

The perspective view which shows the outline of a unit-type building. The perspective view which shows the periphery of the boundary part of the roof panel which comprises a lower-roof part, and an outer wall surface part. FIG. 4 is a perspective view showing a waterproof structure in the vicinity of a boundary portion between a lower roof portion and an outer wall surface portion; The perspective view which shows a short accessory and a rain flashing material. The front view which expands and shows the circumference|surroundings of a short character.

An embodiment embodying the present invention will be described below with reference to the drawings. In this embodiment, the waterproof structure of the present invention is applied to a unit-type building in which a plurality of building units are combined with each other. FIG. 1 is a perspective view showing an outline of a unit building.

As shown in FIG. 1, the building 10 comprises a building body 13 having a ground floor portion 11 and a second floor portion 12 . The building body 13 is configured by combining a plurality of building units 15 with each other. The building unit 15 has a rectangular parallelepiped frame having pillars and beams. It is configured. The building unit 15 is manufactured in advance at a manufacturing factory and transported to the construction site by truck or the like. Although not shown, a roof is provided above the building body 13 .

The first floor portion 11 of the building body 13 has a first floor projecting portion 16 projecting from one side surface of the second floor portion 12. - 特許庁A lower roof section 18 is provided above the projecting section 16 on the first floor. The lower floor section 18 is provided so as to protrude from the outer wall section 21 forming the one side surface of the second floor section 12 . The lower roof section 18 has a sloped roof that slopes downward toward the side away from the outer wall section 21 .

The outer wall portion 21 includes a plurality of outer wall panels 22 arranged side by side. The outer wall panel 22 has an outer wall surface member 23 facing the outdoors and a base frame 24 provided on the back side of the outer wall surface member 23 (see FIG. 2). The outer wall material 23 is made of, for example, a ceramic siding board. The base frame 24 has a plurality of frame members 26 made of steel, and is configured by connecting the plurality of frame members 26 in a rectangular frame shape. An outer wall surface member 23 is fixed to the base frame 24 with screws or the like.

In the outer wall portion 21, an outer wall surface portion 25 is configured by a plurality of outer wall surface members 23 provided side by side. At the boundary between the outer wall surface portion 25 and the lower roof portion 18, an opening region 27 formed between the both 18 and 25 extends horizontally along the boundary portion. The opening region 27 is a region between the lower end surface of the outer wall surface portion 25 and the upper end portion of the lower roof portion 18 and has a predetermined vertical height. As will be described later, the opening area 27 is covered with a rain flashing material 50 or the like to prevent rainwater from entering.

The outer wall surface portion 25 is formed with a lower end surface 28 defining an upper end portion of the opening region 27 and a side end surface 29 defining a side end portion of the opening region 27 . The lower end surface 28 is a horizontal surface facing downward, and the side end surface 29 is a vertical surface facing sideways. The lower end surface 28 and the side end surface 29 are perpendicular to each other. Specifically, the outer wall surface portion 25 includes a first wall surface portion 25a provided above the lower roof portion 18 (upper end portion), and a first wall surface portion 25a that is continuous with the first wall surface portion 25a in the wall width direction and extends from the upper end portion of the lower roof portion 18. and a second wall surface portion 25b extending downward. A lower end surface 28 is formed by the first wall surface portion 25a, and a side end surface 29 is formed by the second wall surface portion 25b. The lower end surface 28 corresponds to the first end surface, and the side end surface 29 corresponds to the second end surface.

Next, the configuration of the lower roof section 18 will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is a perspective view showing the periphery of the boundary between the roof panel 30 and the outer wall surface portion 25 that constitute the lower roof portion 18. As shown in FIG. FIG. 3 is a perspective view showing the waterproof structure around the boundary between the lower roof section 18 and the outer wall surface section 25. As shown in FIG. 2 and 3 both show the verge 19 side of the lower roof section 18. As shown in FIG.

As shown in FIG. 2 , the lower roof section 18 has a roof panel 30 that constitutes the lower roof section 18 . The roof panel 30 has a sheathing board 31 and a roof frame 32 provided on the underside of the sheathing board 31 . The roof frame 32 is constructed by assembling steel frame members into a rectangular frame shape, and the sheathing board 31 is fixed on the roof frame 32 in a state of being placed thereon. Also, the roof panel 30 is installed on the building unit 15 that constitutes the first-floor projecting portion 16 . The roof panel 30 is manufactured in advance at a manufacturing factory and installed on the building unit 15 at the construction site.

As shown in FIG. 3 , an underlaying material 35 is laid on the sheathing board 31 of the roof panel 30 . The underlaying material 35 is formed by, for example, asphalt roofing. A roofing material 36 is laid on the underlaying material 35 . The roof material 36 is made of, for example, slate roof tiles. A roof surface of the lower roof section 18 is formed by the roof material 36 .

A strut 38 extending along the verge 19 is provided on the roof panel 30 . The climbing tree 38 is made of a wooden block and placed on the underlaying material 35 . The climbing tree 38 is fixed to the sheathing board 31 via the underlaying material 35. - 特許庁

A verge draining material 39 extending along the verge 19 is attached to the climbing tree 38 . The bristle draining material 39 is formed so as to cover the climbing tree 38 with a metal plate material. The draining material 39 includes an upper plate portion 41 covering the upper surface of the climbing tree 38, and a pair of side plate portions 42 and 43 extending downward from both ends in the width direction of the upper plate portion 41 and covering both side surfaces of the climbing tree 38. and

Of the side plate portions 42 and 43 , the outer side plate portion 42 serves as a draining portion arranged on the side surface side of the roof panel 30 . The inner side plate portion 43 has a lower portion recessed toward the strut 38 with respect to the upper portion. The breech draining member 39 further has an extending plate portion 44 extending from the lower end portion of the side plate portion 43 (lower portion) to the side opposite to the strut 38 side. The extending plate portion 44 is placed on the underlaying material 35 , and the end portion of the roofing material 36 is placed on the extending plate portion 44 .

One longitudinal end (upper end) of the bristled draining material 39 is inserted into the end of the outer wall surface 25 in the opening region 27 on the side end surface 29 side. The one end portion of the colander draining member 39 is in contact with the side end surface 29 of the outer wall surface portion 25 . More specifically, the one end portion of the lashing member 39 is partially cut out on the outside in the width direction, thereby forming a projecting portion on the inside in the width direction. The projecting portion enters the opening region 27 and contacts the side end surface 29 . In other words, the bristles draining material 39 is arranged in a state in which the two surfaces forming the cutout portions are in contact with the outdoor side surface and the side end surface 29 of the outer wall surface portion 25, respectively.

Next, the waterproof structure at the boundary between the lower roof portion 18 and the outer wall surface portion 25 will be described.

As described above, the underlaying material 35 is laid on the sheathing board 31 of the roof panel 30 and raised upward at the end portion thereof on the side of the outer wall portion 21 . The raised rising portion 35 a is fixed to the underlying frame 24 . The base frame 24 has, as a frame member 26, a lower end frame member 26a extending along the lower end surface 28 of the outer wall surface portion 25 (see FIG. 2). A portion of the lower end frame member 26a protrudes below the lower end surface 28, and the upper portion of the rising portion 35a is fixed to the protruding portion.

More specifically, on the side opposite to the lower end frame member 26a (more specifically, the protruding portion) across the upper portion of the rising portion 35a, a base member 46 made of a long wooden plate extending in the same direction as the lower end frame member 26a is provided. is provided. The base member 46 is fixed to the bottom frame member 26a with screws or the like via the rising portion 35a. As a result, the rising portion 35a is fixed while being sandwiched between the lower end frame member 26a and the base member 46. As shown in FIG.

An upper portion of a waterproof sheet 48 is sandwiched and fixed between the outer wall surface portion 25 and the lower end frame member 26a. The waterproof sheet 48 is formed in an elongated shape extending along the lower end surface 28 of the outer wall surface portion 25 , and the lower portion of the waterproof sheet 48 hangs below the lower end surface 28 . The waterproof sheet 48 is preliminarily sandwiched and fixed between the outer wall surface member 23 (the outer wall surface portion 25) and the lower end frame member 26a at the manufacturing factory.

A rain flashing material 50 is provided on the outdoor side of the rising portion 35 a of the underlaying material 35 . The rain flashing material 50 is formed in an elongated shape extending along the boundary portion between the lower roof portion 18 and the outer wall surface portion 25 . The rain flashing material 50 is provided so as to straddle the outer wall surface portion 25 and the lower roof portion 18 and covers the opening region 27 . This prevents rainwater from entering the interior through the opening region 27 .

The rain flashing material 50 is formed of a metal plate material, and has the same cross-sectional shape over the entire longitudinal direction. The rain flashing material 50 has a rising portion 51 extending vertically in the opening region 27 and a base portion 52 extending from the lower end portion of the rising portion 51 onto the lower roof portion 18 . The rising portion 51 is fixed to the outdoor side surface of the base material 46 with screws or the like. In addition, the lower part of the waterproof sheet 48 hangs down on the outdoor side of the rising portion 51 . As a result, the water flowing down from the outer wall surface portion 25 is guided to the outdoor side of the rain flashing material 50 along the waterproof sheet 48 . Although illustration is omitted, a draining material is further provided on the outdoor side of the waterproof sheet 48, and the waterproof sheet 48 is hidden from the outdoor side by the draining material.

A coping 55 is provided below the base portion 52 . A coping 55 is placed on the underlaying material 35 and extends along the base portion 52 . The base portion 52 is fixed to the top rail 55 with screws or the like. Further, the base portion 52 is placed on the roofing material 36 by bending downward the portion that extends to the outside from the coping 55 .

Here, in the present embodiment, as described above, the end of the lashing material 39 enters the end of the opening region 27 on the side end surface 29 side, so that the end of the lashing material 39 and the rain flashing It is considered that the connection with the end of the material 50 becomes a problem. Therefore, in this embodiment, a characteristic configuration is provided in order to solve the problem of scramble. The characteristic configuration will be described below with reference to FIGS. 4 and 5 in addition to FIG. FIG. 4 is a perspective view showing the short accessory 60 and the rain flashing material 50. As shown in FIG. In addition, in FIG. 4, the rain flashing material 50 is indicated by a virtual line (a chain double-dashed line) for convenience of explanation. Moreover, FIG. 5 is a front view showing the periphery of the short accessory 60 in an enlarged manner. 5, illustration of the waterproof sheet 48 is omitted for the sake of convenience. 3 and 4, for the sake of convenience, illustration of a sealing material 75 (details will be described later) that is filled in the peripheral portion of the short accessory 60 is omitted.

As shown in FIGS. 3 to 5, a short accessory 60 is provided at the end of the opening area 27 on the side end surface 29 side. The short accessory 60 is formed of a metal plate material in a rectangular shape, and more specifically, in a substantially square shape. The short accessory 60 is arranged so as to cover the upper surface of the flakes 39 in the opening region 27 and the lower end surface 28 of the outer wall surface portion 25 .

The short accessary 60 has approximately the same distance as the distance between the upper surface of the draining material 39 and the lower end surface 28, if the vertical dimension is random, and more specifically, it is slightly smaller than the above distance. The short accessory 60 is arranged between the upper surface of the flakes draining material 39 and the lower end surface 28 in the opening area 27 . In this arrangement state, the upper side portion 61 of the short accessory 60 is along the lower end surface 28, the side portion 62 (more specifically, the side portion 62 on the side end surface 29 side) is along the side end surface 29, and the lower side The portion 63 is along the upper surface of the ditching material 39 . More specifically, the upper side portion 61 of the short accessory 60 is in contact with the lower end surface 28 , and the side portion 62 is in contact with the side end surface 29 . Therefore, the short accessory 60 is arranged with the corner between the upper side 61 and the side 62 aligned with the corner between the lower end face 28 and the side end face 29 . Further, the short accessory 60 is fixed to the outdoor side surface of the base material 46 with screws or the like in such an arrangement state. The upper side portion 61 corresponds to the first side portion, the side portion 62 corresponds to the second side portion, and the lower side portion 63 corresponds to the third side portion.

In the arrangement state described above, the short accessory 60 extends further than the draining material 39 toward the side opposite to the side end face 29 side. A rain flashing material 50 is arranged on the outdoor side of the extended extension portion 65 . The rain flashing material 50 is arranged with its rising portion 51 overlaid on the outdoor side of the extension portion 65 . Although not shown, a sealing material is interposed between the extended portion 65 and the rain flashing material 50 to prevent rainwater from entering through the space between the two. Moreover, the rain flashing material 50 is arranged in a state in which the longitudinal end portions are in contact with the inner surface of the draining material 39 (specifically, the outer surface of the side plate portion 43).

The short accessory 60 has recessed portions 66 to 68 that are recessed indoors on the upper side 61 side, the side side portion 62 side, and the lower side portion 63 side, respectively. These concave portions 66 to 68 are formed in an L shape by bending the side portions 61 to 63 of the short accessory 60 toward the indoor side. Of the recessed portions 66 to 68, the recessed portion 66 on the upper side portion 61 side extends along the upper side portion 61, the recessed portion 67 on the side portion 62 side extends along the side portion 62, and the lower side portion 67 extends along the side portion 62. A concave portion 68 on the portion 63 side extends along the lower side portion 63 . The concave portions 66 to 68 are continuous with each other and extend in a U-shape as a whole. The concave portion 66 corresponds to the second concave portion, the concave portion 67 corresponds to the first concave portion, and the concave portion 68 corresponds to the third concave portion.

The concave portion 66 on the side of the upper side portion 61 forms a groove-shaped seal filling portion 71 together with the lower end surface 28 of the outer wall surface portion 25 . The concave portion 67 on the side portion 62 side forms a groove-shaped seal filling portion 72 together with the side end surface 29 of the outer wall portion 25 . The recessed portion 68 on the lower side portion 63 side forms a groove-shaped sealing filling portion 73 together with the upper surface of the fluffed draining material 39 . A sealing material 75 can be filled in each of these seal filling portions 71 to 73 .

The seal filling portions 71 to 73 are continuous with each other and extend in a U-shape. A sealing material 75 is filled in each of the seal filling portions 71 to 73 . The sealing material 75 is an amorphous sealing material, and is made of, for example, a silicon-based sealing material. A sealing material 75 is continuously filled in each of the seal filling portions 71 to 73 . The sealing material 75 is a range formed between the rain flashing material 50 and the side end surface 29 of the outer wall surface part 25 in the seal filling parts 71 to 73, in other words, a range not covered from the outside by the rain flashing material 50. is filled to That is, the sealing material 75 is filled over the entire area of the seal filling portions 72 and 73 , and is filled only in the area between the flashing material 50 and the side end surface 29 of the seal filling portion 71 . As a result, between the rain flashing material 50 and the side end surface 29, the space between the short accessory 60 and the outer wall surface portion 25 is sealed, and the space between the short accessory 60 and the draining material 39 is sealed. ing.

A waterproof material 77 made of a sponge material is provided in a recessed portion 68 of the extending portion 65 of the short accessory 60 , which overlaps the rain flashing material 50 . The waterproof material 77 is provided so as to block the concave portion 68 . The waterproof material 77 is provided in the concave portion 68 so as to be continuous with the sealing material 75 filled in the concave portion 68 . This reliably prevents rainwater from entering through the concave portion 68 .

Further, the rising portion 51 of the rain flashing material 50 has an upper end recessed portion 51a recessed toward the indoor side at its upper end side. The upper recessed portion 51 a has a recessed shape corresponding to the recessed portion 66 of the short accessory 60 and is arranged in a state of being superimposed on the recessed portion 66 . This reliably prevents rainwater from entering through the concave portion 66 .

Next, a work procedure for constructing a waterproof structure at the boundary between the lower roof section 18 and the outer wall surface section 25 will be described.

First, each building unit 15 and the roof panel 30 are manufactured in a manufacturing factory. After that, the manufactured building units 15 and roof panels 30 are transported to the construction site by a truck or the like. At the construction site, first, the building body 13 is constructed by installing the building units 15 at predetermined installation positions and connecting them to each other. After that, the roof panel 30 is installed on the building unit 15 that constitutes the overhanging portion 16 on the first floor. As a result, an outer wall surface 25 is formed, and an opening region 27 is formed between the outer wall surface 25 and the roof panel 30 .

Subsequently, a shed forming step of forming the shed portion 18 by providing various roof members on the roof panel 30 is performed. In this step, first, the underlaying material 35 is laid on the sheathing board 31 of the roof panel 30 . Thereafter, a climbing tree 38 is installed along the shingle 19 on the underlaying material 35, and a shingling material 39 is attached to the installed climbing tree 38.例文帳に追加After that, a roofing material 36 is laid on the underlaying material 35 .

Subsequently, a short role object installation process for installing the short role object 60 is performed. In this step, the short accessory 60 is installed so as to cover the upper surface of the lashing draining material 39 in the opening region 27 and the lower end surface 28 of the outer wall surface portion 25 . Specifically, in this step, the short accessory 60 is placed in a state in which the upper side 61 and the side edge 62 of the short accessory 60 are in contact with the lower end surface 28 and the side end surface 29 of the outer wall surface 25, respectively. The short accessory 60 is fixed to the base material 46 in the arranged state.

Subsequently, a step of installing the rain flashing material 50 is performed. Before performing this step, the coping 55 is placed on the underlaying material 35 in advance. In the rain flashing material installation step, the rain flashing material 50 is installed in a state in which the longitudinal ends of the rain flashing material 50 are in contact with the inner surface of the draining material 39 . Moreover, at the time of installation, the rain flashing material 50 is installed in a state of being superimposed on the extension part 65 of the short accessory 60 from the outdoor side. Then, the rain flashing material 50 is fixed to the coping 55 and the base material 46, respectively. Also, a waterproof material 77 is arranged in the concave portion 68 of the extension portion 65 of the short accessory 60 .

Subsequently, a sealing process is performed to fill the seal filling portions 71 to 73 of the short accessory 60 with the sealing material 75 . In this step, of the seal filling portions 71 to 73, the sealing material 75 is filled in the areas not covered with the rain flashing material 50 from the outside. As described above, a series of waterproofing processes at the boundary between the lower roof portion 18 and the outer wall surface portion 25 are completed.

According to the configuration of the present embodiment described in detail above, the following excellent effects are obtained.

In the configuration in which the end of the draining material 39 is inserted into the end on the side end surface 29 side of the opening area 27 between the outer wall surface part 25 and the lower roof part 18, the draining material 39 in the opening area 27 A short accessory 60 is provided to cover between the upper surface of the outer wall portion 25 and the lower end surface 28 of the outer wall portion 25.例文帳に追加In this case, since the short accessory 60 is short, it can be easily handled and installed. In addition, the short accessories 60 extend further than the draining material 39 toward the side opposite to the side end surface 29 side of the outer wall surface portion 25 . The rain flashing material 50 is provided so as to overlap the extended portion 65 of the short accessory 60 with its longitudinal end in contact with the side surface (more specifically, the inner side surface) of the draining material 39 . As a result, the side of the end surface 29 opposite to the draining material 39 in the opening region 27 can be covered with the rain flashing material 50 . Further, in this case, when installing the rain flashing material 50, the end portion of the rain flashing material 50 can be placed against the side surface of the draining material 39, so the installation work is easy. end processing is unnecessary. Therefore, facilitation of construction work can be achieved.

A rain flashing material 50 is superimposed on an extension part 65 of a short accessory 60 from the outdoor side. In this case, when the rain flashing material 50 is installed, the short accessory 60 is attached first, and then the rain flashing material 50 can be placed against the extended portion 65 of the short accessory 60 from the outside. Therefore, the construction work can be made even easier.

In the short accessory 60, the side portion 62 side arranged along the side end surface 29 of the outer wall surface portion 25 is recessed toward the indoor side, so that the side portion 62 side forms a groove-shaped seal filling portion 72 together with the side end surface 29. A concave portion 67 is formed. Thus, by filling the seal filling portion 72 with the sealing material 75, the side end surface 29 and the short accessory 60 can be sealed. In this case, since the sealed portion becomes clear, reliable waterproofing can be performed.

In the short accessories 60, the upper side portion 61 side arranged along the lower end surface 28 of the outer wall surface portion 25 is recessed toward the indoor side, so that the upper side portion 61 side forms a groove-shaped seal filling portion 71 together with the lower side end surface 28. A concave portion 66 is formed. Thus, by filling the seal filling portion 71 with the sealing material 75, the space between the lower end surface 28 and the short accessory 60 can be sealed. Further, since the concave portion 66 is formed continuously with the concave portion 67, the seal filling portions 71 and 72 formed by the concave portions 66 and 67 can be connected to each other. Therefore, the sealing material 75 can be continuously filled in the seal filling portions 71 and 72, and more reliable waterproofing can be performed.

In the short accessory 60, the side of the lower side 63 arranged along the upper surface of the draining material 39 is recessed toward the indoor side, so that the lower side 63 side and the upper surface of the draining material 39 form a groove-shaped seal filling part. A concave portion 68 forming 73 is provided. Thus, by filling the seal filling portion 73 with the sealing material 75, the gap between the draining material 39 and the short accessories 60 can be sealed. Further, since the concave portion 68 is formed continuously with the concave portion 67, in this case, the concave portions 66 to 68 are formed continuously in a U-shape. As a result, the seal filling portions 71 to 73 formed by the concave portions 66 to 68 can be connected to each other, so that the seal filling portions 71 to 73 can be continuously filled with the sealing material 75 . Therefore, more reliable waterproofing can be performed.

The present invention is not limited to the above embodiments, and may be implemented as follows, for example.

(1) In the above-described embodiment, the recessed portions 66 to 68 are provided on the upper side 61 side, the side side portion 62 side, and the lower side portion 63 side of the short role object 60, respectively, so that the three sides of the short role object 60 are covered. Although the seal filling parts 71 to 73 are formed, for example, only two of the recessed parts 66 to 68 of the short accessory 60 are provided, so that only two sides of the short accessory 60 are provided. A seal filling portion may be formed. Alternatively, only one of the concave portions 66 to 68 of the short accessory 60 may be provided so that only one side of the short accessory 60 is provided with a seal filling portion. When the seal-filling portion is formed only on one side of the short accessory 60, it is desirable to provide only the concave portion 67 on the side portion 62 having the longest seal length.

It should be noted that the recessed portions may not be provided on all three sides of the short accessory 60 . In this case, the short accessory 60 may be formed in a rectangular plate shape.

(2) In the above-described embodiment, the rain flashing material 50 is superimposed on the outdoor side of the extension part 65 of the short accessory 60. It may be provided overlapping the indoor side of the portion 65 . In the case of such a configuration, the rain flashing material 50 is installed first, and then the short accessory 60 is installed. Specifically, first, the rain flashing material 50 is installed in a state in which its end portion is in contact with the side surface of the draining material 39 . In this installed state, the side end face 29 side of the rain flashing material 50 in the opening region 27 is opened. In other words, in this case, there is an opening between the upper surface of the flake draining material 39 and the lower end surface 28 of the outer wall surface portion 25 in the opening region 27 .

Then, a short accessories 60 is installed so as to cover the opening between the upper surface of the draining material 39 and the lower end surface 28 . At the time of installation, the short accessory 60 is installed so as to be superimposed on the outdoor side of the rain guard 50.例文帳に追加As a result, the extended portion 65 of the short accessory 60 is superimposed on the outdoor side of the rain flashing material 50 . Even in the case of performing construction in such a procedure, the work of installing the rain flashing material 50 and the short accessories 60 can be easily performed, so that the construction work can be facilitated.

(3) In the above embodiment, an example of application to a unit-type building has been described, but the waterproof structure of the present invention may be applied to buildings with other structures, such as buildings constructed by the steel frame construction method.

DESCRIPTION OF SYMBOLS 10... Building 18... Lower floor part 19... Velcro 23... Exterior wall surface material 25... Exterior wall surface part 27... Opening region 28... Lower end face as first end face 29... Side as second end face End surface 39... Draining material 50... Rain guard material 60... Short accessories 61... Upper side part as first side part 62... Side part as second side part 63... Third side part 65 ... extending portion, 66 ... concave portion as a second concave portion, 67 ... concave portion as a first concave portion, 68 ... concave portion as a third concave portion, 71 to 73 ... seal filling Part 75: Sealing material.

Claims (6)

an outer wall surface portion in which a plurality of outer wall surface materials are arranged side by side;
a lower roof part that extends obliquely downward on the side away from the outer wall surface part,
an opening region between the outer wall surface portion and the lower roof portion extending along the boundary portion with a predetermined vertical width;
The outer wall surface portion is formed with a first end face that defines an upper end portion of the opening region and a second end face that is perpendicular to the first end face and defines a side end portion of the opening region,
A harrow draining material extending along the harrow of the lower housing is provided on the lower housing,
Applied to a building in which the end of the mulberry draining material enters the end of the opening area on the second end face side,
A waterproof structure for a building, which has a long shape extending along the boundary and includes a flashing material covering the opening area,
A short accessory covering between the upper surface of the mulberry draining material and the first end surface in the opening area,
The short accessory has an extension portion extending further than the draining material toward the side opposite to the second end surface side,
The waterproof structure of a building, wherein the rain flashing material is provided so as to be overlapped with the extending portion in a state in which the longitudinal end portion thereof is in contact with the side surface of the breech draining material. 2. The waterproof structure of a building according to claim 1, wherein said rain flashing material is superimposed on said extended portion of said short accessory from the outdoor side. The short accessory is formed in a rectangular plate shape, and has a first side portion arranged along the first end surface, a second side portion arranged along the second end surface, and the blade. and a third side portion arranged along the upper surface of the draining material,
In the short accessory, the second side portion side is recessed toward the indoor side to form a first concave portion forming a groove-shaped seal filling portion for filling a sealing material together with the second end face. 3. A waterproof structure for a building according to Item 1 or 2. The first side portion of the short accessory is recessed toward the indoor side to form a second concave portion that forms a groove-shaped seal filling portion that is filled with a sealing material together with the first end face,
The waterproof structure for a building according to claim 3, wherein the second concave portion is formed continuously with the first concave portion. The third side portion of the short accessory is recessed toward the indoor side to form a third concave portion that forms a groove-shaped seal filling portion that is filled with a sealing material together with the upper surface of the draining material. cage,
The waterproof structure for a building according to claim 4, wherein the third concave portion is formed continuously with the first concave portion. A waterproof structure construction method applied when constructing the waterproof structure of a building according to claim 2,
In a state in which the mulberry draining material is installed on the lower part in advance, the short accessories are installed so as to cover between the upper surface of the mulberry draining material and the first end surface in the opening area. A step of installing short accessories,
A rain flashing that is installed by overlapping the rain flashing material on the extension part of the short accessory from the outdoor side in a state where the longitudinal end of the rain flashing material is in contact with the side surface of the bristle draining material. a material installation process;
A construction method for a waterproof structure, comprising:

Images