JP4034084B2 - Water stoppage structure between the roof and the outer wall - Google Patents

Water stoppage structure between the roof and the outer wall Download PDF

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Publication number
JP4034084B2
JP4034084B2 JP2002052462A JP2002052462A JP4034084B2 JP 4034084 B2 JP4034084 B2 JP 4034084B2 JP 2002052462 A JP2002052462 A JP 2002052462A JP 2002052462 A JP2002052462 A JP 2002052462A JP 4034084 B2 JP4034084 B2 JP 4034084B2
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Prior art keywords
wall
roof
lower house
waterproof sheet
ventilation
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JP2002052462A
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JP2003253835A (en
Inventor
幸喜 津田
兼二 小林
純一 岩田
恭子 白鳥
貴子 宮崎
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、下屋の屋根と外壁との間の止水構造に関する。
【０００２】
【従来の技術及び課題】
住宅用建物などにおける下屋の屋根と外壁との間の止水のため、従来より、水切り板による種々の止水構造が提供されている。しかるに、それらの止水構造には、構造が複雑であったり、施工が厄介であるなどの問題があった。
【０００３】
本発明は、このような背景において、構造簡素にして施工が容易であり、また、通気性にも優れる下屋屋根と外壁との間の止水構造を提供することを課題とする。
【０００４】
【課題を解決するための手段】
上記の課題は、防水シートが下屋の屋根の野地板の上面側から外壁内部の所定の高さ位置へと立ち上げられることによって、下屋の屋根と外壁との間が止水されていることを特徴とする下屋の屋根と外壁との間の止水構造によって解決される。
【０００５】
この止水構造では、下屋の屋根と外壁との間の止水を、それらの間に渡した防水シートで行うようになされているから、水切り板による複雑な止水構造を排除することができ、止水構造を防水シートによる簡素なものにすることができ、しかも、下屋屋根と外壁との間の止水の施工を防水シートを用いて容易に行うことができる。
【０００６】
上記の止水構造において、外壁には、防水シートの立ち上がり部分よりも屋外側の内部において、上下方向に延びる通気部が備えられ、この通気部が、下屋の屋根と外壁との間に存在する防水シートの屋外側の空間部と連通されているとよい。
【０００７】
この構造では、外壁に備えられた上下方向に延びる通気部が、下屋と外壁との間に存在する防水シートの屋外側における空間部と連通されることで、外壁内の通気部の下端側が屋外側の空気と連通し、外壁内での結露の発生を効果的に防ぐことができる。
【０００８】
この構造において、下屋における野地板と屋根葺き材との間に通気部が設けられ、この通気部が防水シートの屋外側の空間部と連通している場合は、下屋屋根の通気部内の空気が、空間部を通じて、外壁内の通気部に送りこまれ、外壁内の結露の発生のみならず、下屋の屋根内の結露の発生も簡素な構造で効果的に防ぐことができる。
【０００９】
【発明の実施の形態】
次に、本発明の実施形態を図面に基づいて説明する。
【００１０】
図１乃至図４に示す実施形態の止水構造において、１は外壁、２は下屋の屋根、そして、３が防水シートである。
【００１１】
外壁１は、外壁面材４の背面側に発泡樹脂系の断熱材５が重ねられたもので、この発泡断熱材５の屋外側の面部には、図３に示すように、上下方向に延びる凹所６…が設けられ、この凹所６…によって、外壁面材４と発泡系断熱材５との間に上下方向に延びる通気部７が形成されている。なお、８，９は繊維系断熱材であり、１０は内装ボードである。
【００１２】
また、下屋の屋根２において、１１は垂木、１２は野地板、１３はルーフィングであり、このルーフィング１３の上方に、屋根葺き材１４が設置され、屋根葺き材１４とルーフィング１３との間に、通気部１６が設けられている。この通気部１６は、図１に示すように、下屋屋根２の傾斜方向への通気が可能でかつ、図２に示すように、水平横方向への通気も可能な態様で備えられている。
【００１３】
防水シート３は、下屋の屋根２と外壁１との間の部分を止水するもので、下屋の屋根２の野地板１２の上面側から、外壁１の内部、即ち発泡系断熱材の背面部における所定の高さ位置へと立ち上げられている。なお、防水シート３の下屋屋根２側の端部は、ルーフィング１３と重ねられて連続し、そこから漏水することがないようになっていることはいうまでもない。
【００１４】
この防水シート３は、種々の方法で施工されてよいが、特に、この防水シート３を予め工場などで外壁１用のパネルに組み付けておき、現場では、建て付けを終えた外壁１用のパネルからの防水シート３の垂れ下がり部分を下屋の屋根２の野地板１２の上にのせて取り付けるというようにして行うことにより、防水シート３の施工を極めて容易に行うことができる。
【００１５】
１８は隠蔽板であり、下屋の屋根２と外壁１との間に存在する防水シート３の屋外側における空間部１９を屋外側から囲むように備えられている。そして、空間部１９は、外壁１内の通気部７と連通されると共に、下屋の屋根２内の通気部１６とも連通されている。なお、隠蔽板１８は、空間部１９をこの隠蔽板１８部分を通じて屋外と連通させる態様のものであってもよいし、あるいはまた、一次止水用の水切り板として機能するものであってもよい。
【００１６】
上記の止水構造では、下屋の屋根２と外壁１との間の止水を、それらの間に渡した防水シート３で行うようにしているから、従来のような水切り板による複雑な止水構造を排除することができ、止水構造を防水シート３による簡素なものにすることができる。しかも、下屋屋根２と外壁１との間の止水の施工を防水シート３を用いて例えば上記のようにして容易に行うことができる。
【００１７】
また、外壁１に備えられた上下方向に延びる通気部７が、空間部１９と連通されているので、外壁１内の通気部７の下端側が屋外側の空気と連通し、外壁１内での結露の発生を効果的に防ぐことができる。
【００１８】
更に、本実施形態では、下屋の屋根２にも通気部１６が設けられ、この通気部１６が空間部１９と連通しているので、下屋屋根の通気部１６内の空気が空間部１９を通じて外壁１内の通気部７に送りこまれ、外壁１内の結露の発生のみならず下屋の屋根２内の結露の発生も効果的に防ぐことができる。また、防水シートは、樹脂製のシートのほか、金属シートや、金属と樹脂の複合シートであってもよい。
【００１９】
【発明の効果】
本発明の下屋屋根と外壁との間の止水構造は、以上のとおりのものであるから、構造簡素であり、しかも、止水の施工を容易に行うことができる。また、通気性に優れて結露の発生を効果的に防ぐことができる。
【図面の簡単な説明】
【図１】実施形態の止水構造を示すもので、図４のＩ−Ｉ線断面図である。
【図２】同止水構造を示すもので、図４のＩＩ−ＩＩ線断面図である。
【図３】図１及び図２におけるＩＩＩ−ＩＩＩ線断面図である。
【図４】下屋の屋根と外壁部分の外観の概略斜視図である。
【符号の説明】
１…外壁
２…下屋の屋根
３…防水シート
７…通気部
１２…野地板
１６…通気部
１９…空間部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water stop structure between a roof of a lower house and an outer wall.
[0002]
[Prior art and problems]
Conventionally, various water-stopping structures using a draining plate have been provided for water-stopping between a roof of a lower house and an outer wall in a residential building or the like. However, these water-stop structures have problems such as complicated structures and troublesome construction.
[0003]
In view of such a background, an object of the present invention is to provide a water stop structure between a lower roof and an outer wall that is simple in construction and easy to construct and also excellent in air permeability.
[0004]
[Means for Solving the Problems]
The above problem is that the waterproof sheet is raised from the upper surface side of the base plate of the roof of the lower house to a predetermined height position inside the outer wall, so that the water between the roof of the lower house and the outer wall is stopped. This is solved by a water stop structure between the roof of the lower house and the outer wall.
[0005]
In this water stop structure, the water stop between the roof and the outer wall of the lower house is performed with a waterproof sheet passed between them, so it is possible to eliminate the complicated water stop structure with a draining plate. The waterproof structure can be simplified by the waterproof sheet, and the waterproofing work between the lower roof and the outer wall can be easily performed using the waterproof sheet.
[0006]
In the water blocking structure, the outer wall is provided with a ventilation portion extending in the vertical direction inside the outdoor side of the rising portion of the waterproof sheet, and this ventilation portion exists between the roof of the lower house and the outer wall. It is good to be connected with the space part of the outdoor side of the waterproof sheet.
[0007]
In this structure, the vent part extending in the vertical direction provided on the outer wall communicates with the space part on the outdoor side of the waterproof sheet existing between the lower house and the outer wall, so that the lower end side of the vent part in the outer wall is It communicates with the air on the outdoor side, and it is possible to effectively prevent the occurrence of condensation within the outer wall.
[0008]
In this structure, a ventilation part is provided between the base plate and the roofing material in the lower house, and when this ventilation part communicates with the space part on the outdoor side of the waterproof sheet, Air is sent to the ventilation part in the outer wall through the space part, and not only the condensation in the outer wall but also the condensation in the roof of the lower house can be effectively prevented with a simple structure.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0010]
In the water stop structure of the embodiment shown in FIGS. 1 to 4, 1 is an outer wall, 2 is a roof of a lower house, and 3 is a waterproof sheet.
[0011]
The outer wall 1 is formed by stacking a foamed resin-based heat insulating material 5 on the back side of the outer wall surface material 4, and the surface of the foamed heat insulating material 5 on the outdoor side extends vertically as shown in FIG. 3. Recesses 6 are provided, and a ventilation portion 7 extending in the vertical direction is formed between the outer wall surface material 4 and the foamed heat insulating material 5 by the recesses 6. In addition, 8 and 9 are fiber type heat insulating materials, and 10 is an interior board.
[0012]
Further, in the roof 2 of the lower house, 11 is a rafter, 12 is a field board, and 13 is a roofing. A roofing material 14 is installed above the roofing 13, and between the roofing material 14 and the roofing 13. The ventilation part 16 is provided. As shown in FIG. 1, the ventilation portion 16 is provided in such a manner that ventilation in the inclined direction of the roof 2 is possible and horizontal ventilation as shown in FIG. 2. .
[0013]
The waterproof sheet 3 stops the water between the roof 2 and the outer wall 1 of the lower house. From the upper surface side of the base plate 12 of the roof 2 of the lower house, the inside of the outer wall 1, that is, the foam-based heat insulating material It is raised to a predetermined height position on the back surface. In addition, it cannot be overemphasized that the edge part by the side of the roof roof 2 of the waterproof sheet 3 is piled up with the roofing 13, and continues and it does not leak from there.
[0014]
The waterproof sheet 3 may be constructed by various methods. In particular, the waterproof sheet 3 is assembled in advance on the panel for the outer wall 1 at a factory or the like, and the panel for the outer wall 1 that has been installed in the field. By attaching the hanging portion of the waterproof sheet 3 to the base plate 12 of the roof 2 of the lower house, the waterproof sheet 3 can be constructed very easily.
[0015]
18 is a concealment board, and is provided so that the space part 19 in the outdoor side of the waterproof sheet 3 existing between the roof 2 and the outer wall 1 of the lower house may be surrounded from the outdoor side. The space portion 19 communicates with the ventilation portion 7 in the outer wall 1 and also communicates with the ventilation portion 16 in the roof 2 of the lower house. In addition, the concealment board 18 may have a form in which the space portion 19 communicates with the outdoors through the concealment board 18 part, or may function as a draining board for primary water stoppage. .
[0016]
In the water stop structure described above, the water stop between the roof 2 of the lower house and the outer wall 1 is performed by the waterproof sheet 3 passed between them. The water structure can be eliminated, and the water stop structure can be simplified by the waterproof sheet 3. In addition, water stoppage between the lower roof 2 and the outer wall 1 can be easily performed using the waterproof sheet 3 as described above, for example.
[0017]
Further, since the ventilation portion 7 provided in the outer wall 1 and extending in the vertical direction is communicated with the space portion 19, the lower end side of the ventilation portion 7 in the outer wall 1 communicates with the air on the outdoor side, and in the outer wall 1. The occurrence of condensation can be effectively prevented.
[0018]
Furthermore, in this embodiment, the ventilation part 16 is provided also in the roof 2 of the lower house, and since this ventilation part 16 is connected with the space part 19, the air in the ventilation part 16 of the lower house roof is the space part 19. Thus, not only the occurrence of condensation in the outer wall 1 but also the occurrence of condensation in the roof 2 of the lower house can be effectively prevented. In addition to the resin sheet, the waterproof sheet may be a metal sheet or a composite sheet of metal and resin.
[0019]
【The invention's effect】
Since the water stop structure between the lower roof and the outer wall of the present invention is as described above, the structure is simple and the water stop work can be easily performed. Moreover, it has excellent air permeability and can effectively prevent the occurrence of condensation.
[Brief description of the drawings]
FIG. 1 shows a water stop structure of an embodiment, and is a cross-sectional view taken along line II of FIG.
FIG. 2 is a sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along the line III-III in FIGS. 1 and 2. FIG.
FIG. 4 is a schematic perspective view of the appearance of the roof and outer wall portion of the lower house.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer wall 2 ... Roof of roof 3 ... Waterproof sheet 7 ... Ventilation part 12 ... Base plate 16 ... Ventilation part 19 ... Space part

Claims (1)

防水シートが下屋の屋根の野地板の上面側から外壁内部の所定の高さ位置へと立ち上げられることによって、下屋の屋根と外壁との間が止水され、
前記外壁には、その内部に、防水シートの立ち上がり部分よりも屋外側に位置して、上下方向に延びる通気部が備えられると共に、
前記下屋の屋根側には、野地板と屋根葺き材との間に、前記防水シート部分の上側において、通気部が設けられ、かつ、
下屋の屋根と外壁との間に存在する前記防水シートの屋外側における空間部が隠蔽板で屋外側から囲まれ、該空間部によって、外壁内の通気部と下屋の屋根の通気部とが連通され、下屋の屋根の通気部内の空気が前記空間部を通じて外壁内の通気部に送り込まれるようになされていることを特徴とする下屋の屋根と外壁との間の止水構造。 The waterproof sheet is raised from the upper surface side of the base plate of the roof of the lower house to a predetermined height position inside the outer wall, so that the water between the roof of the lower house and the outer wall is stopped,
The outer wall is provided with a ventilation portion located in the outdoor side of the rising portion of the waterproof sheet and extending in the vertical direction inside the outer wall,
On the roof side of the lower house, between the field board and the roofing material, on the upper side of the waterproof sheet portion, a ventilation portion is provided, and
A space portion on the outdoor side of the waterproof sheet existing between the roof of the lower house and the outer wall is surrounded from the outdoor side by a concealing plate, and by the space portion, a ventilation portion in the outer wall and a ventilation portion of the roof of the lower house The water-stopping structure between the roof and the outer wall of the lower house is characterized in that air in the ventilation part of the roof of the lower house is sent to the ventilation part in the outer wall through the space .
JP2002052462A 2002-02-27 2002-02-27 Water stoppage structure between the roof and the outer wall Expired - Fee Related JP4034084B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
JP4526881B2 (en) * 2004-06-22 2010-08-18 大和ハウス工業株式会社 Method for forming a water stop structure at the boundary between the roof of the lower house and the outer wall panel
JP5722666B2 (en) * 2011-03-03 2015-05-27 ミサワホーム株式会社 Building structure
CN112696021B (en) * 2020-11-30 2022-07-15 中国一冶集团有限公司 Water-stopping and drainage construction method for floor slab pipeline opening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102197106A (en) * 2008-10-24 2011-09-21 旭硝子株式会社 Water-repellent, oil-repellent agent compositions and manufacturing method therefor

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