JP2011174344A - Waterproof structure of siding - Google Patents

Waterproof structure of siding Download PDF

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JP2011174344A
JP2011174344A JP2010041029A JP2010041029A JP2011174344A JP 2011174344 A JP2011174344 A JP 2011174344A JP 2010041029 A JP2010041029 A JP 2010041029A JP 2010041029 A JP2010041029 A JP 2010041029A JP 2011174344 A JP2011174344 A JP 2011174344A
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resin material
elastic resin
siding
rain
joint
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JP5683821B2 (en
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Michihiro Ishioka
道博 石岡
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NIPPON AAKU KAIHATSU KK
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent the rain, snow, and water which have entered into the inside through a joint of siding from reaching a post and a sill. <P>SOLUTION: A plate-like elastic resin material 20 secured to an outside surface of a furring strip 13 is provided on the rear side of a joint (25) of a siding 14. The elastic resin material 20 is equipped with, on its outside surface, a plurality of drain grooves 22 extending in longitudinal direction (claim 1). The elastic resin material 20 has water-proofing nature and has such restoration nature (swelling nature) as closes a hole part even if a nail is driven. So, the rain, snow, and water which have entered through a joint cannot farther intrude beyond the elastic resin material 20. Since the elastic resin material 20 is provided with a plurality of drain grooves 22, the rain, snow, and water which have entered through the joint fall along the drain groove 22 are discharged to the outside of a house. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、建築物の外装材として使用するサイディングの構造に係り、とくにサイディングの防水構造に関する。   The present invention relates to a siding structure used as a building exterior material, and more particularly to a waterproof siding structure.

サイディングは、外壁に張る板状外装材であり、工場生産された製品が一般的で、耐火性や耐久性などに優れたものが多く知られている。近年は種類も増え、セメント(窯業)系、セラミック系、金属系、樹脂系などのサイディングがある。色柄などデザインが豊富で、比較的安価で施工も容易なため、住宅(とくに木造住宅)の外壁として使用されることが多い。サイディングは、耐久性が高く軽量なので、外壁のリフォームにも多用される。   Siding is a plate-like exterior material stretched on the outer wall, and is generally manufactured at the factory, and many are known to have excellent fire resistance and durability. In recent years, the number of types has increased, and there are sidings such as cement (ceramics), ceramic, metal, and resin. It is often used as an outer wall of a house (especially a wooden house) because it has abundant designs such as color patterns, is relatively inexpensive and easy to construct. Since siding is durable and lightweight, it is also frequently used for renovating outer walls.

図3は、サイディングの一般的な配設構造を例示するものである。符号1は、柱(または間柱)、2は、透湿防水シート、3は、胴縁(縦胴縁)、4は、サイディング(サイディング材)である。サイディング4は、胴縁3を利用して左右のサイディング4同士を並設固定し、その継ぎ目(目地)に充填材(コーキング材)5を配して目地部分の防水を図っている。   FIG. 3 illustrates a general arrangement structure of siding. Reference numeral 1 denotes a pillar (or a stud), 2 denotes a moisture-permeable waterproof sheet, 3 denotes a trunk edge (vertical trunk edge), and 4 denotes a siding (siding material). In the siding 4, the left and right sidings 4 are juxtaposed and fixed using the trunk edge 3, and a filler (caulking material) 5 is disposed at the joint (joint) to waterproof the joint.

なお、目地部分の防水性能を高めるため、図4に示すように、胴縁3にバックアップ材6を配して、このバックアップ材6の中央に突起7を設け、この突起7を目地部分に嵌入するよう配置させて、目地の防水性能を高める技術も知られている(特許文献1)。   In order to improve the waterproof performance of the joint portion, as shown in FIG. 4, a backup material 6 is arranged on the trunk edge 3, a projection 7 is provided in the center of the backup material 6, and the projection 7 is inserted into the joint portion. A technique for improving the waterproof performance of joints by arranging them so as to be known is also known (Patent Document 1).

特開2006−283446号公報JP 2006-283446 A

問題は、経年劣化による雨雪水の内部侵入である。雨雪水の内部への侵入によって、木造躯体(柱材や木製土台)の腐食が惹起されるからである。とくに近時の高気密住宅では、室内温度が比較的高く維持されるため、内部に侵入した雨雪水の温度も高くなりやすく、木造躯体の腐食は一層促進される傾向にある。   The problem is the intrusion of rain and snow water due to aging. This is because the intrusion into the rain and snow water causes corrosion of the wooden frame (column material or wooden base). Especially in recent highly airtight houses, the indoor temperature is kept relatively high, so that the temperature of rain and snow water entering the interior tends to be high, and the corrosion of the wooden frame tends to be further promoted.

雨雪水の内部侵入は、さまざまな理由に起因して起こる。第一に、サイディング(4)の目地を埋めている充填材(5)は、太陽光線に含まれる紫外線によって劣化しやすいうえ、外気温の寒暖差に起因して収縮膨張を繰り返し、施工当初の状態に較べて痩せてゆくため、目地部分に隙間が生じてそれが徐々に広がってゆく。   Rain and snow water intrusion occurs for a variety of reasons. First, the filler (5) filling the joints of the siding (4) is easily deteriorated by the ultraviolet rays contained in the sun rays, and is repeatedly contracted and expanded due to the temperature difference of the outside temperature. Since it is thinner than the state, a gap is created in the joint and gradually spreads.

第二に、外気温の寒暖差あるいは室内温度と外気温との差によって、サイディング(4)も膨張収縮を繰り返している。サイディング(4)は、釘打ち等の定点固定で胴縁(3)に留めてあるから、膨張収縮を繰り返して変形を生じる場合も少なくない。サイディング(4)が変形や位置ズレを起こすと、目地の充填材
(5)に問題がなくても、目地部分に隙間が生じて雨雪水が内部侵入する。
Secondly, the siding (4) repeats expansion and contraction due to the difference in the outside air temperature or the difference between the room temperature and the outside air temperature. Since the siding (4) is fixed to the body edge (3) by fixing at a fixed point such as nailing, there are not a few cases where deformation occurs by repeated expansion and contraction. When the siding (4) is deformed or misaligned, there is a problem with the filler (5) of the joint, and a gap is formed in the joint and rain and snow water enters inside.

サイディング(4)の目地から内部侵入した雨雪水は、胴縁(3)に達して左右に展開して回り込み、透湿防水シート2に達する。透湿防水シート2は、雨雪水の侵入を防ぐためのものであるが、実際の施工では、サイディング(4)を固定するための釘が、胴縁(3)を貫いて透湿防水シート2にも孔をあけていることが少なくない。このため、内部に侵入した雨雪水は透湿防水シート2の孔から奥へ、つまり柱(1)へと侵入する。   The rain / snow water that has entered inside from the joints of the siding (4) reaches the trunk edge (3), spreads around to the left and right, and reaches the moisture-permeable waterproof sheet 2. The moisture permeable waterproof sheet 2 is for preventing rain and snow water from entering, but in actual construction, a nail for fixing the siding (4) penetrates the trunk edge (3) and the moisture permeable waterproof sheet. It is not uncommon for 2 to have holes. For this reason, the rain / snow water that has entered the inside penetrates from the hole of the moisture-permeable waterproof sheet 2 to the back, that is, the pillar (1).

こうして雨雪水が柱(1)へ侵入すると、雨雪水は下方に流れ落ちて土台に達するため、柱(1)そのものと土台とが雨雪水に晒されることになる。近時の木造住宅は高気密であるため、冬期でも室内温度は高く維持されているので、内部に侵入した雨雪水の温度も高く維持されることになり、柱(1)や土台が木製である場合は、数年でこれを腐食させることになる。   When rain / snow water enters the pillar (1) in this manner, the rain / snow water flows down and reaches the foundation, so that the pillar (1) itself and the foundation are exposed to the rain / snow water. Since recent wooden houses are airtight, the indoor temperature is kept high even in winter, so the temperature of rain and snow water that has entered the interior is also kept high, and the pillar (1) and foundation are wooden. If this is the case, it will corrode in a few years.

見栄えを改善する外装リフォームによっては、たとえ目地部分を綺麗に充填補充しなおしたとしても、腐食した柱(1)や土台の危険性(耐震性など)を改善することは出来ない。   Depending on the exterior renovation that improves the appearance, even if the joints are refilled and refilled cleanly, the corroded pillar (1) and foundation hazard (such as earthquake resistance) cannot be improved.

そこで、本発明の目的は、サイディングの目地から内部へと侵入した雨雪水が、柱(1)や土台に達することがないようにする点にある。   Therefore, an object of the present invention is to prevent rain and snow water that has entered from the joints of the siding from reaching the pillar (1) and the foundation.

前記目的を達成して、課題を解決するため、本発明に係るサイディングの防水構造は、サイディングの目地裏側に、胴縁の外側面(屋外側面;以下同じ)に固定した板状の弾性樹脂材を備え、この弾性樹脂材は、その外側面に、縦方向に延設させた複数の排水凹溝を備える(請求項1)。   In order to achieve the above object and to solve the problems, the waterproof structure of the siding according to the present invention is a plate-like elastic resin material fixed to the outer side surface of the trunk edge (outdoor side surface; the same applies hereinafter) on the joint side of the siding. The elastic resin material includes a plurality of drainage grooves extending in the vertical direction on the outer surface of the elastic resin material (claim 1).

板状の弾性樹脂材は、特許文献1に開示されるようなバックアップ材(6)がない場合は胴縁外側面の全面に、或いは、目地裏側の雨雪水の侵入個所を防水できる左右幅をもたせた範囲で設ける。雨雪水の侵入防止のためには必ずしも胴縁外側面の全面を被覆する必要はない。   If there is no backup material (6) as disclosed in Patent Document 1, the plate-like elastic resin material has a lateral width that can waterproof the entire surface of the outer side of the trunk edge or the ingress of rain and snow water on the back side of the joint. Provide in a range that has In order to prevent intrusion of rain and snow water, it is not always necessary to cover the entire outer surface of the trunk edge.

一方、特許文献1に開示されるようなバックアップ材(6)がある場合は、バックアップ材(6)の両側に、胴縁外側面の左右両端部を被覆する状態で設けることが出来る。施工コスト、作業効率の点から、バックアップ材(6)を取り除くことが可能な場合は、バックアップ材(6)を取り除いた上で、胴縁外側面の全面に、或いは、目地裏側の雨雪水の侵入個所を防水できる左右幅をもたせた範囲に弾性樹脂材を設ける。この場合、バックアップ材(6)は取り外したままでも良いし、再度装着(再固定)しなおしても良い。   On the other hand, when there is a backup material (6) as disclosed in Patent Document 1, it can be provided on both sides of the backup material (6) in a state of covering both left and right ends of the outer surface of the trunk edge. If it is possible to remove the backup material (6) from the viewpoint of construction cost and work efficiency, remove the backup material (6), and then rain or snow water on the entire outer surface of the trunk edge or on the back side of the joint An elastic resin material is provided in a range having a lateral width that can waterproof the intrusion portion. In this case, the backup material (6) may be removed or may be reattached (refixed).

弾性樹脂材の肉厚(肉厚平均)は、略1〜5mmとする場合がある(請求項2)。弾性樹脂材の肉厚は、使用する弾性材の材質、強度、寒暖差等を考慮して定める。雨雪水を防止する目的だけであれば、弾性樹脂材の肉厚平均値は薄い方が原材料コストの点で好ましいが、厳しい寒暖差に耐える強度を保証するためには、過度に厚くならない範囲内で若干の肉厚余裕をもたせることも大切である。   The thickness (average thickness) of the elastic resin material may be approximately 1 to 5 mm (claim 2). The thickness of the elastic resin material is determined in consideration of the material, strength, temperature difference, etc. of the elastic material to be used. For the purpose of preventing rain / snow / water, it is preferable that the average thickness of the elastic resin material is thin in terms of raw material costs, but in order to guarantee the strength to withstand severe temperature differences, it should not be excessively thick. It is also important to have a slight wall thickness inside.

弾性樹脂材に設ける排水凹溝は、幅0.5〜10mm、深さ0.5〜10mmとする場合がある(請求項3)。   The drainage ditch provided in the elastic resin material may have a width of 0.5 to 10 mm and a depth of 0.5 to 10 mm.

弾性樹脂材は、目地裏側に侵入した雨雪水を受け止めて、排水凹溝を使って下方流動させるものである。従って、弾性樹脂材に形成される凹部(排水凹溝)と凸部の左右幅は必ずしも同一である必要はない。しかしながら、排水凹溝の左右幅が狭すぎると雨雪水を効果的に下降案内することが出来ないため、排水凹溝は幅0.5〜10mm、深さ0.5〜10mm程度に設計することが望ましい。排水凹溝の左右に生ずる凸部は、雨雪水を排出する機能に着目すれば直接の関与は少ないが、弾性樹脂材の強度保証や劣化防止等の観点からみると、排水凹溝と同程度またはそれ以上の左右幅、すなわち例えば0.5〜10mmに設定しておくことが好ましい。   The elastic resin material receives rain and snow water that has entered the back side of the joint, and flows downward using the drainage ditch. Accordingly, the left and right widths of the concave portion (drain groove) formed in the elastic resin material and the convex portion are not necessarily the same. However, if the width of the drainage ditch is too narrow, rain and snow water cannot be guided down effectively, so the drainage ditch is designed to have a width of about 0.5 to 10 mm and a depth of about 0.5 to 10 mm. It is desirable. The convex portions on the left and right sides of the drainage ditch are not directly involved if attention is paid to the function of draining rain and snow water, but from the viewpoint of guaranteeing the strength of the elastic resin material and preventing deterioration, the same as the drainage ditch. It is preferable to set the horizontal width of about or more, that is, for example, 0.5 to 10 mm.

本発明に係るサイディングの防水構造は、サイディングの目地裏側に、胴縁の外側面(屋外側面)に固定した板状の弾性樹脂材を備え、この弾性樹脂材は、その外側面(屋外側面)に、縦方向に延設させた複数の排水凹溝を備えるから、目地から内部に侵入した雨雪水は、この弾性樹脂材によって、それ以上の奥への内部侵入を妨げられる。   The waterproof structure for siding according to the present invention includes a plate-like elastic resin material fixed to the outer side surface (outdoor side surface) of the trunk edge on the joint side of the siding, and the elastic resin material has an outer side surface (outside side surface). In addition, since a plurality of drainage grooves extending in the vertical direction are provided, rain and snow water that has entered the interior from the joint is prevented from entering further into the interior by this elastic resin material.

サイディングを固定するための金具(例えば釘)によって弾性樹脂材に小孔があいたとしても、弾性樹脂材の膨張特性によって当該小孔は金具に密着するため、雨雪水が内部侵入できるような隙間は形成されない。また、弾性樹脂材の外側面には、縦方向に延設した複数の排水凹溝が存在するので、目地から内部に侵入した雨雪水は弾性樹脂材に突き当たった後、この排水凹溝に従って下方に流れ落ち、屋外へ排出される。透湿防水シート2の奥へ雨雪水が侵入する事態は確実に避けることが出来る。この結果として、サイディングの目地から内部へと侵入した雨雪水が、柱(1)や土台に達することを確実に防止できる。   Even if there is a small hole in the elastic resin material due to a metal fitting (for example, a nail) for fixing the siding, the small hole will be in close contact with the metal fitting due to the expansion characteristics of the elastic resin material. Is not formed. In addition, since there are a plurality of drainage grooves extending in the vertical direction on the outer surface of the elastic resin material, the rain and snow water that has entered the interior from the joints hit the elastic resin material, and then follow the drainage grooves. It flows down and is discharged outdoors. The situation where rain and snow water intrudes into the depth of the moisture permeable waterproof sheet 2 can be surely avoided. As a result, it is possible to reliably prevent rain and snow water that has entered from the joints of the siding to reach the pillar (1) and the base.

実施形態に係るサイディングの防水構造例を示す斜視図である。It is a perspective view which shows the waterproof structure example of the siding which concerns on embodiment. 実施形態に係るサイディングの防水構造例を示す平面図である。It is a top view which shows the waterproof structure example of the siding which concerns on embodiment. 従来のサイディングの防水構造例を示す斜視図である。It is a perspective view which shows the example of the waterproof structure of the conventional siding. 従来のサイディングの防水構造例を示す平面図である。It is a top view which shows the example of the waterproof structure of the conventional siding.

図1〜図2は、本発明に係るサイディングの防水構造の一実施形態を示すものである。この防水構造は、柱(または間柱)10の外側面(屋外側面)に透湿防水シート12を配設し、この透湿防水シート12の外側面(屋外側面)に胴縁(縦胴縁)13を固定し、この胴縁13の外側面(屋外側面)の全体(表面全面)を被覆する板状の弾性樹脂材20を配してなる。   1 to 2 show an embodiment of a waterproof structure for siding according to the present invention. In this waterproof structure, a moisture-permeable waterproof sheet 12 is disposed on the outer side surface (outdoor side surface) of the pillar (or inter-column) 10, and a trunk edge (vertical trunk edge) is provided on the outer side surface (outdoor side surface) of the moisture-permeable waterproof sheet 12. 13 is fixed, and a plate-like elastic resin material 20 that covers the entire outer surface (outside surface) of the trunk edge 13 (the entire surface) is disposed.

そして、この弾性樹脂材20の外側面の略中央部に、外装材であるサイディング(サイディング材)14の継ぎ目(左右方向の継ぎ目)を位置させ、この継ぎ目(目地)に充填材(コーキング材;例えばモルタル)25を配する。なお、サイディング14を固定する場合、上下の縁部は重ね合わせて固定するので隙間は生じない。柱(または間柱)10の外側面に透湿防水シート12を配設し、透湿防水シート12の外側面に胴縁13を固定する点は、従来のサイディングの防水構造と同じである。   Then, a seam (a seam in the left-right direction) of a siding (siding material) 14 that is an exterior material is positioned at a substantially central portion of the outer surface of the elastic resin material 20, and a filler (coking material; For example, mortar) 25 is disposed. When the siding 14 is fixed, the upper and lower edges are overlapped and fixed, so that no gap is generated. The point that the moisture-permeable waterproof sheet 12 is disposed on the outer side surface of the pillar (or the inter-column) 10 and the trunk edge 13 is fixed to the outer side surface of the moisture-permeable waterproof sheet 12 is the same as the conventional waterproof structure for siding.

本実施形態で用いる弾性樹脂材20は、板状、つまり肉厚が略均一のものである。弾性樹脂材20の外側面(屋外側面)にサイディング14を固定するため、弾性樹脂材20の外側面の凸部21は略平滑な面を構成するよう成形する。   The elastic resin material 20 used in the present embodiment is plate-shaped, that is, has a substantially uniform thickness. In order to fix the siding 14 to the outer side surface (outdoor side surface) of the elastic resin material 20, the convex portion 21 on the outer side surface of the elastic resin material 20 is formed so as to form a substantially smooth surface.

弾性樹脂材20の外側面(屋外側面)に成形する複数の排水凹溝22は、縦方向に延設する。内部に侵入した雨雪水を下方流動させ、屋外へ排出させるためである。排水凹溝22の底面(屋内側面)には排水を妨げるような突起や障害物は形成せず、底面平滑、側面平滑に成形することが望ましい。   The plurality of drainage grooves 22 formed on the outer side surface (outdoor side surface) of the elastic resin material 20 extend in the vertical direction. This is because rain and snow water that has entered the inside flows downward and is discharged to the outside. It is desirable that the bottom surface (inside side surface) of the drainage ditch 22 is formed with a flat bottom surface and a smooth side surface without forming protrusions or obstacles that prevent drainage.

排水凹溝22は、上下方向に略直線状を呈するもので、それが左右方向に複数並列するよう平行に設けることが望ましい。配設間隔は必ずしも均等である必要はない。   The drainage ditch 22 is substantially linear in the vertical direction, and is preferably provided in parallel so that a plurality of the drainage grooves 22 are juxtaposed in the left-right direction. The arrangement intervals are not necessarily equal.

排水凹溝22は、雨雪水を下方流動させる機能を備えればよいから、必ずしも直線状のものである必要はない。湾曲カーブを描く凹溝であっても構わない。しかしながら、雨雪水の凍結の虞がある寒冷地において使用する場合は、雨雪水は可能な限り速やかに下方流動させて屋外排出するように、排水凹溝22は、上下方向に略直線状を呈するよう成形することが望ましい。   Since the drain ditch 22 only needs to have a function of causing rain and snow water to flow downward, it does not necessarily have to be linear. It may be a concave groove that draws a curved curve. However, when used in a cold region where there is a risk of rain and snow water freezing, the drainage ditch 22 is substantially linear in the vertical direction so that the rain and snow water flows downward as quickly as possible and is discharged outdoors. It is desirable to mold so as to exhibit.

排水凹溝22を並列的に複数設けるのは、弾性樹脂材20の凸部21がサイディング14の裏面(内側面;室内側面)を支持する役目を果たすため、左右幅が大きな排水凹溝(22)を一個だけ設けるより、弾性樹脂材20の凸部21が複数存在してサイディング14の裏面を均等支持できるよう、凹凸を形成する凸部21と排水凹溝22とを分散配置する方が好ましいからである。   The plurality of drain grooves 22 are provided in parallel because the convex portions 21 of the elastic resin material 20 serve to support the back surface (inner side surface; indoor side surface) of the siding 14. It is preferable to disperse and arrange the convex portions 21 and the drainage grooves 22 so that the plurality of convex portions 21 of the elastic resin material 20 exist and the back surface of the siding 14 can be evenly supported. Because.

排水凹溝22は、水の流動性を保証する観点から、例えば幅を0.5〜10mm程度、深さを0.5〜10mm程度に設計しておけば、実用に耐える。目地の充填材25を通過して内部に侵入する雨雪水は、単位時間当たりの量はごく少ないので、排水凹溝22の幅が0.5mm程度、深さが0.5mm程度であっても機能する。ごく少量の水であれば、水の表面張力作用による流動阻害といった事態を生じにくいからである。排水凹溝22の幅と深さは、それらを大きく設定する分には、排水機能の点では問題は生じない。つまり、排水凹溝22の幅と深さが5mmを超えても(例えば5〜10mmであっても)、排水機能の点では問題は生じない。ただし、目地裏の胴縁13の左右寸法には限りがあるので、排水凹溝22の幅と深さは、限定寸法内で効率的に機能するよう設計することが望まれる。   From the viewpoint of guaranteeing the fluidity of water, the drainage ditch 22 can withstand practical use if designed to have a width of about 0.5 to 10 mm and a depth of about 0.5 to 10 mm. Since the amount of rain / snow water that passes through the joint filler 25 and enters the interior is very small, the drain groove 22 has a width of about 0.5 mm and a depth of about 0.5 mm. Also works. This is because a very small amount of water is unlikely to cause a flow obstruction due to the surface tension of water. As long as the width and depth of the drainage ditch 22 are set larger, no problem arises in terms of drainage function. That is, even if the width and depth of the drainage ditch 22 exceed 5 mm (for example, 5 to 10 mm), there is no problem in terms of drainage function. However, since the right and left dimensions of the trunk edge 13 on the back of the joint are limited, it is desirable that the width and depth of the drainage ditch 22 be designed so as to function efficiently within the limited dimensions.

弾性樹脂材20は、天然ゴム、合成ゴムのいずれであっても良い。有機高分子を主成分とする弾性材料(いわゆる弾性ゴム)であれば良い。これらはいずれも水を遮断する性質をもつ。また、固定のための釘打ちをした際に、釘打ちによって出来た釘まわりの隙間(小孔)を閉じる復元力を備えている。合成ゴムには、ポリブタジエン系、ニトリル系、クロロプレン系などがあるが、いずれであっても良い。   The elastic resin material 20 may be either natural rubber or synthetic rubber. Any elastic material (so-called elastic rubber) having an organic polymer as a main component may be used. All of these have the property of blocking water. In addition, it has a restoring force that closes the gap (small hole) around the nail created by nailing when nailing for fixing. Synthetic rubber includes polybutadiene, nitrile, and chloroprene, and any of them may be used.

弾性樹脂材20は、寒暖差による経年劣化に耐える程度の肉厚をもっていれば良い。例えば、排水凹溝22の深さをα1とし、排水凹溝22の底面がもつ肉厚をα2とした場合、弾性樹脂材20の肉厚(肉厚平均)は(α1+α2)/2である。弾性樹脂材20の肉厚平均の最小値は、寒暖差による劣化防止を考慮して1mm以上とすることが望ましい。また肉厚平均は、製造コスト、輸送コスト、施工コストを考慮すれば、例えば、30mm以下とする。好ましくは20mm以下、より好ましくは10mm以下、さらに好ましくは5mm以下とする。実用上は、5mm以下でよく、通常の施工では5mm程度で実用に耐える性能をもつ。例えば、肉厚平均を5mmとした場合、凸部21部分の肉厚は10mm程度となり、排水凹部22の深さは、例えば、3〜8mm程度の範囲で自由に設定できる。   The elastic resin material 20 only needs to be thick enough to withstand aging due to temperature differences. For example, when the depth of the drainage ditch 22 is α1 and the thickness of the bottom surface of the drainage ditch 22 is α2, the thickness (average thickness) of the elastic resin material 20 is (α1 + α2) / 2. The minimum value of the average thickness of the elastic resin material 20 is preferably 1 mm or more in consideration of prevention of deterioration due to temperature difference. The thickness average is, for example, 30 mm or less in consideration of manufacturing cost, transportation cost, and construction cost. Preferably it is 20 mm or less, More preferably, it is 10 mm or less, More preferably, you may be 5 mm or less. In practical use, it may be 5 mm or less, and in a normal construction, it has a performance that can withstand practical use at about 5 mm. For example, when the average thickness is 5 mm, the thickness of the convex portion 21 is about 10 mm, and the depth of the drain recess 22 can be freely set within a range of about 3 to 8 mm, for example.

従って、かかるサイディングの防水構造によれば、胴縁13の外側面を被覆する板状の弾性樹脂材20を設け、弾性樹脂材20の外側面に複数の排水凹溝22を設けたから、目地(25)から内部に侵入した雨雪水は、この弾性樹脂材20によって、それ以上の奥への内部侵入を妨げられるとともに、排水凹溝22に従って下方に流れ落ち、屋外へ排出される。従って、透湿防水シート12の奥へ雨雪水が侵入する事態を確実に防止できる。   Therefore, according to the waterproof structure of the siding, the plate-like elastic resin material 20 that covers the outer surface of the trunk edge 13 is provided, and the drainage grooves 22 are provided on the outer surface of the elastic resin material 20. The rain / snow water that has entered the interior from 25) is prevented from entering further into the interior by the elastic resin material 20, and flows down downward along the drainage ditch 22 and is discharged to the outside. Therefore, it is possible to reliably prevent rain and snow from entering the depth of the moisture permeable waterproof sheet 12.

本発明に係るサイディングの防水構造は、新築工事、リフォーム工事のいずれにおいても適用することが出来る。   The waterproof structure for siding according to the present invention can be applied to both new construction work and renovation work.

本発明に係るサイディングの防水構造は、前記実施形態のものに限定されない。例えば、リフォーム工事の際に、胴縁13に特許文献1に開示されているようなバックアップ材(6)が存在する場合であって、工期や施工コスト等の諸般の事情からバックアップ材(6)を取り除くことが難しい場合は、バックアップ材(6)の左右両側に、胴縁13の外側面を被覆する板状の弾性樹脂材20を設ければ良い。バックアップ材(6)の左右部分に排水凹溝22を備える弾性樹脂材20を設けるだけでも、目地の内部に侵入した雨雪水を屋外へ排出することが出来る。バックアップ材(6)を取り除くことが可能であれば、バックアップ材(6)を取り除いた後、胴縁13の外側面全面を被覆する弾性樹脂材20(排水凹溝22を備えるもの)を設けることが望ましい。   The waterproof structure for siding according to the present invention is not limited to that of the above embodiment. For example, in the case of renovation work, there is a case where a backup material (6) as disclosed in Patent Document 1 is present on the trunk edge 13, and the backup material (6) due to various circumstances such as construction period and construction cost. If it is difficult to remove, the plate-like elastic resin material 20 that covers the outer surface of the trunk edge 13 may be provided on both the left and right sides of the backup material (6). Even if the elastic resin material 20 having the drainage grooves 22 is provided on the left and right portions of the backup material (6), the rain and snow water that has entered the joint can be discharged to the outside. If it is possible to remove the backup material (6), after removing the backup material (6), an elastic resin material 20 (including a drainage ditch 22) covering the entire outer surface of the trunk edge 13 is provided. Is desirable.

排水凹溝22を備える弾性樹脂材20は、胴縁13の外側面に沿って上下方向に延設する。この場合、弾性樹脂材20の左右寸法は、胴縁13の左右寸法と完全一致させる必要はない。雨雪水の侵入を防止できればよいからである。従って、弾性樹脂材20の左右寸法は、胴縁13の左右寸法より若干小さい場合もあるし、若干大きい場合もあり得る。弾性樹脂材20には孔(貫通孔)は形成しない。雨雪水の奥部への侵入を確実に遮断するためである。   The elastic resin material 20 including the drain groove 22 extends in the vertical direction along the outer surface of the trunk edge 13. In this case, the left and right dimensions of the elastic resin material 20 do not need to be completely matched with the left and right dimensions of the trunk edge 13. This is because it is only necessary to prevent intrusion of rain and snow water. Therefore, the left-right dimension of the elastic resin material 20 may be slightly smaller than the left-right dimension of the trunk edge 13 or may be slightly larger. No hole (through hole) is formed in the elastic resin material 20. This is to reliably block the intrusion of rain and snow water.

弾性樹脂材20の配設後、弾性樹脂材20の外側面に各種の塗膜材(例えば樹脂系またはモルタル系の防水塗膜材)を設けても良い。塗膜材は、弾性樹脂材20を釘打ち固定した後に、釘などの固定金具を設ける部分(固定点)を中心として(集中的に)塗布すると一層効果的である。また、防水性を高め、見栄えを良好にするためにも目地には充填材25を施しておくことが望ましい。   After the elastic resin material 20 is disposed, various coating materials (for example, a resin-based or mortar-based waterproof coating material) may be provided on the outer surface of the elastic resin material 20. It is more effective if the coating material is applied (intensively) around a portion (fixing point) where a fixing fitting such as a nail is provided after the elastic resin material 20 is fixed by nailing. In addition, it is desirable to apply a filler 25 to the joints in order to improve waterproofness and improve appearance.

10 柱(または間柱)
12 透湿防水シート
13 胴縁(縦胴縁)
14 サイディング(サイディング材)
20 弾性樹脂材
21 凸部
22 排水凹溝
25 充填材(目地のコーキング材)
10 pillars (or studs)
12 Breathable waterproof sheet 13 Trunk edge (vertical trunk edge)
14 Siding (siding material)
20 Elastic resin material 21 Convex part 22 Drainage ditch 25 Filler (coking material of joint)

Claims (3)

サイディングの目地裏側に、胴縁の外側面に固定した板状の弾性樹脂材を備え、
この弾性樹脂材は、その外側面に、縦方向に延設させた複数の排水凹溝を備えることを特徴とするサイディングの防水構造。
Equipped with a plate-like elastic resin material fixed to the outer side of the trunk edge on the joint side of the siding,
The elastic resin material has a waterproof structure for siding characterized in that a plurality of drainage grooves extending in the vertical direction are provided on the outer surface of the elastic resin material.
弾性樹脂材の肉厚は、略1〜5mmであることを特徴とする請求項1記載のサイディングの防水構造。   The waterproof structure for a siding according to claim 1, wherein the thickness of the elastic resin material is approximately 1 to 5 mm. 弾性樹脂材に設ける排水凹溝は、幅0.5〜10mm、深さ0.5〜10mmとすることを特徴とする請求項1または請求項2のいずれか一項に記載のサイディングの防水構造。   The drainage ditch provided in the elastic resin material has a width of 0.5 to 10 mm and a depth of 0.5 to 10 mm, and the waterproof structure for siding according to any one of claims 1 and 2 .
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082436A (en) * 2015-10-26 2017-05-18 フォースワンホールディングス株式会社 Outer wall structure and outer wall construction method

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KR101595799B1 (en) * 2015-08-26 2016-02-26 주식회사 베스트원 Assembly structure of exterior panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61127206U (en) * 1985-01-30 1986-08-09
JPH0416223U (en) * 1990-05-31 1992-02-10
JP2753703B2 (en) * 1987-08-11 1998-05-20 ドーエイ外装 有限会社 Exterior wall panels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61127206U (en) * 1985-01-30 1986-08-09
JP2753703B2 (en) * 1987-08-11 1998-05-20 ドーエイ外装 有限会社 Exterior wall panels
JPH0416223U (en) * 1990-05-31 1992-02-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082436A (en) * 2015-10-26 2017-05-18 フォースワンホールディングス株式会社 Outer wall structure and outer wall construction method

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