JP2004238884A

JP2004238884A - Covering material and covering material set for waterproof construction

Info

Publication number: JP2004238884A
Application number: JP2003028182A
Authority: JP
Inventors: Akira Kanami; 晃金見
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-05
Filing date: 2003-02-05
Publication date: 2004-08-26

Abstract

PROBLEM TO BE SOLVED: To provide a covering material for waterproof construction, which enables the unification of various types of processes in waterproof construction and which can offer smoothness of a covering surface, and a covering material set for the waterproof construction, which enables high waterproof performance to be secured throughout the construction surface. SOLUTION: The covering material is integrally equipped with a base material 2 with fire resistance, and a sheet material 3 with waterproofness, which is stuck on the backside of the base material 2; the sheet material 3 is provided in the state of overhanging from the outer edge of the base material 2 so as to form a margin W for overlapping the other adjacent covering material 1; and a cavity C for avoiding interference with the margin W elongated from the other adjacent covering material 1 is provided on the backside of the base material 2. COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、表装材に関し、より詳細には、防水施工用の表装材に関する。また、防水施工用表装材セットに関する。
【０００２】
【従来の技術】
ルーフバルコニや陸屋根等では、床面の防水性や耐火性を確保すべく、種々の工程を得て施工がなされている。また、近年では、美観や耐汚性を向上させるために化粧加工が施された防水施工面も見られる。
【０００３】
より詳しくは、まず、被施工面（コンクリートスラブ）に均しモルタルをうち、次いで、この均しモルタル上に防水シートを敷設して防水性を得る。また、防水シート上に、再度、均しモルタルを打つことで耐火性を確保する。
また、化粧加工を施す際には、均しモルタル上に接着剤を塗布して多数の化粧材（例えば、タイル）を敷き詰め、さらに化粧材の隙間にコーキング材を充填して化粧材裏面側への浸水に起因した化粧材の剥離（不陸）を抑制している。
このように従来では、種々の工程を得て防水施工面が形成されている。
【０００４】
【発明が解決しようとする課題】
ところで、住宅等を建築する際には、建築法（建築基準法）で定められる一定の基準を満たす必要がある。なお、ルーフバルコニや陸屋根等を例に説明すれば、防火認定の取得が必要であり、従来では、上記工法に示されるように、防水シート上に耐火性に富む均しモルタルをうち、防火性能を確保していた。
【０００５】
しかしながら、均しモルタルは比重が大きく、建物に大きな負荷を与える虞がある。また、均しモルタル上に化粧加工を施す際には、均しモルタルの養生・硬化を待つ必要があり、工期や工費の面で改善の余地があった。
【０００６】
また、一方、均しモルタルの量を減らすと施工後に於いて肉やせが生じるためひび割れや水溜まりの発生に繋がる。とりわけ、ルーフバルコニや陸屋根等では、人の出入りが想定されるため高い排水性が要求される。すなわち、防水施工に於いて、いかに平滑性に優れる施工面を得るかといった点は、施工上、重要な課題となる。
【０００７】
本発明は、このような技術的背景を考慮してなされたもので、防水施工において各種工程の一元化を図れ、また、施工面の平滑性も得られる防水施工用の表装材を提供することを課題とする。
【０００８】
【課題を解決するための手段】
本発明では、上記した技術的課題を解決するため以下の構成とした。
すなわち、本発明は、耐火性を有する基材と、この基材の裏面に貼着された防水性を有するシート材と、を一体に備え、且つ前記シート材は、隣接する他の表装材との重ね代を形成すべく前記基材の外縁から張り出して設けられ、さらに前記基材の裏面側には、隣接する他の表装材から延びる重ね代との干渉を回避する空隙が設けられていることを特徴とする。
【０００９】
このように構成された本発明では、耐火性を有する基材と防水性を有するシート材とを一体に備え、且つシート材は前記基材の外縁から張り出した状態で基材の裏面に貼着されている。また、この張り出しによって基材の縁部に重ね代が形成されることとなる。また、基材の裏面側には、隣接する他の表装材から延びる重ね代との干渉を回避する空隙が設けられている。
【００１０】
したがって、本発明の表装材を被防水施工面に複数枚並べて配置した際には、各表装材の重ね代によって、表装材の継ぎ目の防水性が確保される。また、表装材と、他の表装材から延びる重ね代とが重なり合うことで生じる継ぎ目の隆起は、基材の裏面側に設けられた空隙で吸収されるため、施工後においても平坦な表面が得られる。
【００１１】
また、基材には上述の如く耐火性に富む材料が使用され、また、シート材には防水性に富む素材が使用されている。また、基材とシート材とは、貼着によって一体化されているため、施工時には、これら基材及びシート材からなる表装材を施工現場に搬入して施工面に取り付けることで、防水処理と、防火処理と、化粧加工の全てを一元化して処理することが可能になる。
【００１２】
また、前記空隙は、前記重ね代の延出方向と相反する方向に位置した前記基材の縁部の裏面を切り欠いて形成されている構成としてもよい。
【００１３】
この構成では、基材そのものを切り欠いて空隙を形成している。よって、この場合には、基材の裏面側にて、各表装材のシート材を相互に重ね合わせることができ、より優れた防水構造を得ることができる。また、切り欠きは、重ね代の延出方向と相反する基材の縁部の裏面に形成されるため、水勾配が付けられた床面に敷設する際には、重ね代を水勾配の上流側に向けて配置することで、より高い防水性能が得られる。
【００１４】
また、前記基材の裏面を切り欠いて形成される空隙は、前記シート材の厚みに略等しい深さで形成するのが望ましい。
【００１５】
この構成では、一方の表装材に設けられた基材と、この基材の裏面に貼着されたシート材と、他方の表装材から延びるシート材と、が表装材の継ぎ目すなわち各部材が重なり合う部分に於いて隙間無く密に接するため高い防水性能が得られる。また、基材の重みによってシート材の剥離（不陸）が抑制される。また、重なり合うシート材が補強となって基材の剛性を向上させることができる等の利点が得られる。
【００１６】
また、前記基材の縁部には、可撓性を有する防水部材が設けられている構成としてもよい。
この構成では、基材の縁部に可撓性を有する防水部材が設けられるため、各表装材の接合時には、この防水部材によって継ぎ目からの浸水が抑制される。また、各基材に作用する衝撃等を、この可撓性を有する防水部材の緩衝作用によって吸収できる。
【００１７】
また、前記基材には、サイディング材が用いられている構成としてもよい。
ここで「サイディング材」とは、繊維混入セメントと、けい酸カルシウム若しくは石灰けい酸カルシウムの何れかを主成分として成型された所謂「特殊セメント成形材」に相当する。また、さらに好ましくは、住宅等の施工時および解体時等に廃材として排出されるサイディング廃材を使用するとよい。
【００１８】
また、本発明では、上記した技術的課題を解決するため、以下の防水施工用表装材セットを提供する。
すなわち、本発明は、耐火性を備え且つ周囲に少なくとも３辺を有してなる基材と、前記基材の裏面に貼着された防水性を有するシート材と、を備えた防水施工用の表装材からなる防水施工用表装材セットであって、
前記シート材が、前記基材の一角を挟んで連続した２辺に沿って重ね代を形成するように貼着された第１の表装材と、
前記シート材が、前記基材の２角を間に配して連続する３辺に沿って重ね代を形成するように貼着された第２の表装材と、
を含み構成されることを特徴とする防水施工用表装材セット。
【００１９】
このように構成された本発明の防水施工用表装材セットは、基材の一角を挟んで連続した２辺に沿って重ね代を有する第１の表装材と、基材の２角を間に配して連続する３辺に沿って重ね代を有する第２の表装材と、を含み構成されている。
【００２０】
したがって、これら第１の表装材と第２の表装材とを適所に組み合わせて割り付ければ、一つの表素材に於いて表装材相互にシート材が重なり合う部分を少なくとも２カ所以上確保しながら、被施工面全体を効率良く覆い隠すことができる。
【００２１】
また、前記防水施工用表装材セットには、施工対象たる床面に敷設される敷設用の表装材と、前記床面から立ち上がる側壁を覆うための側壁用表装材と、が含まれ、
前記敷設用表装材の縁部には、前記側壁用表装材の下端に係合する係合部が設けられている構成としてもよい
【００２２】
この構成では、敷設用表装材の縁部に、側壁用表装材の下端に係合可能な係合部を設けている。このため、施工時に於いて、この係合部に側壁用表装材の下端を係合させることで、側壁に対する側壁用表装材の浮き上がりを防止できる。つまり、側壁用表装材の固定に於いて、釘やネジ等を用いることなく側壁の固定が可能になる。よって、釘やネジの使用に伴う防水性の低下を回避できると共に、工期や工費の短縮、さらには美観の向上にも繋がる。
【００２３】
また、前記防水施工用表装材セットには、前記基材の外観が相互に異なる表装材が少なくとも１組以上含まれている構成としてもよい。
【００２４】
この構成では、基材の外観が相互に異なる表装材を少なくとも１組以上含むため、施工時に於いて、これら外観の異なる基材を備えた表装材の配置や配置方向等を適宜変更することで、施工面に種々の意匠性を持たせることができる。なお、ここで「外観の異なる」とは、模様、色彩、形状（表面形状含む）、面積、厚み等、視覚上区別し得る外観の違いに相当する。
【００２５】
また、前記空隙は、前記重ね代の延出方向と相反する方向に位置した前記基材の縁部の裏面を切り欠いて形成されている構成としてもよい。また、前記基材の縁部には、可撓性を有する防水部材が設けられている構成としてもよい。また、前記基材には、サイディング材を用いるのが望ましい。
【００２６】
【発明の実施の形態】
以下、本発明に係る防水施工用の表装材、並びに防水施工用表装材セットについて説明する。
【００２７】
本発明に係る防水施工用の表装材１は、図１及び図２に示すように、耐火性を有する基材２と、基材２の裏面に貼着された防水性を有するシート材３と、を一体に備えて構成されている。また、これら基材２及びシート材３からなる表装材１は、シート材３を下面側にして被施工面に敷設される。
【００２８】
基材２は、図１に示されるように矩形に切り出されたサイディングボードからなる。なお「サィディングボード」とは、繊維混入セメントと、けい酸カルシウム若しくは石灰けい酸カルシウムの何れかを主成分として成型された所謂「特殊セメント成形材」に相当し、コンクリートに較べて比重が小さく、また高い耐火性や耐衝撃性を有しているなどの特性から、近年では建築物の外壁材として広く利用されている。
【００２９】
また、本実施形態では、基材２に起用するサィディングボードとして、住宅等の施工時に於いて、例えば窓枠周囲の施工で余ったサイディング廃材すなわちサイディングボードの切れ端を利用している。
この種のサイディング廃材は、建坪２５坪の木造住宅の施工時に於いて約８００ｋｇ程発生し、また、高い耐火性を有することから焼却処分ができず、近年では、その処分について、具体的提案がなされないまま使用に供されているといった現状がある。そこで本実施の形態では、このサイディング廃材を基材３に起用することで、資源の再利用（リサイクル）を図り、また、自然環境の向上に貢献している。
【００３０】
一方、シート材３は、例えば、均質加硫ゴム及びゴムアスファルトシート、塩化ビニルシート等に代表される汎用の防水シートであり、高い防水性能を備えている。
また、シート材３は、貼着対象たる基材２に対して大きく裁断されており、本表装材１の製作時には、基材２の縁部に沿って重ね代Ｗを形成するようにシート材３を基材２の裏面に貼着している。
【００３１】
なお、シート材３の貼着方法については種々例示できるが、概ね図３〜図７に示す貼着パターンの採用によって、被施工面の各種形状に対応できる。なお、貼着方法については、後に詳述する。
【００３２】
また、本実施の形態では、先の重ね代Ｗが他の表装材１に重なり合うことで生じる隆起を抑制するために、基材２の裏面側に空隙Ｃを設けている。
より詳しくは、図２に示されるように、一方の表装材１（図２中Ｙ）と、この表装材１に隣接する他の表装材１（図２中Ｘ）の重ね代Ｗとの干渉を回避すべく、基材２の裏面を予めシート材３の厚みに略等しい深さで切り欠いを形成しておき、この切り欠き４によって、表装材１の継ぎ目Ｔに於ける局所的な隆起を抑制している。
【００３３】
なお、上述の如く、切り欠き４（空隙Ｃ）の深さをシート材３の厚みに略等しい深さに設定した場合には、各表装材１，１の継ぎ目Ｔすなわち各表装材１，１のシート材３が相互に重なり合う部分に於いて、表装材１（Ｙ）の基材２と、この基材２の裏面に貼着されたシート材３と、隣接する他の表装材１（Ｘ）から延びるシート材３（重ね代Ｗ）と、が隙間無く密に接する。よって、継ぎ目Ｔの防水性能が高まり、また、基材２の重みによってシート材３の剥離（不陸）も抑制できる。また、空隙Ｃの下方に於いて重なり合うシート材３が空隙Ｃの上方に位置した基材２の補強になるため、この空隙Ｃ上における基材２の剛性を向上させることもできる。
【００３４】
続いて、上記シート材３の貼着方法について、切り欠き４の形成方法と共に説明する。
【００３５】
まず、図３に示す表装材１（１Ａ）は、被施工面たる床面上に敷設される平板材に相当し、シート材３は、基材２の一角を挟んで連続する２辺に亘り重ね代Ｗを残すように貼着されている。より詳しくは、表装材１（１Ａ）の敷設時に於いて、水勾配の上流側に重ね代Ｗが張り出すように設けられている。
【００３６】
また、上記切り欠き４は、この重ね代Ｗと相反する方向に位置した基材２の縁部に沿って形成されている。すなわち、表装材１（１Ａ）の敷設時において、水勾配の下流側に位置する基材２の縁部に沿って切り欠き４が形成されている。
【００３７】
図４に示す表装材１（１Ｂ）は、主に床面の廻り縁に配される廻り縁用の上材であり、シート材３は、上記平板材１Ａ同様にして、基材２の一角を挟んで連続した２辺に亘り重ね代Ｗを残すように貼着されている。また、ここで「上材」とは、施工時に於いて水勾配の上流側に配される表装材に相当する。
【００３８】
また、重ね代Ｗと切り欠き４の相対的な位置は、上述の平板材１Ａ同様にして、水勾配の上流側に重ね代Ｗが設けられ、水勾配下流側に切り欠き４が形成されている。
【００３９】
なお、これら重ね代Ｗと切り欠き４との相対的位置関係は、表装材１の配置や被施工面の形状、及び表装材１の形状によって若干異なるものであるが、基本的には、上述のように、水勾配の上流側に重ね代Ｗが形成され、水勾配の下流側に切り欠き４が形成されるようにする。
【００４０】
図５に示す表装材１（１Ｃ）は、主に床面の廻り縁に配される廻り縁用の下材であり、シート材３は、基材２の２角を間に配して連続する３辺に亘り重ね代Ｗを残すように貼着されている。また、ここで「下材」とは、施工時において水勾配の下流側に配される表装材に相当する。
【００４１】
また、本実施の形態では、これら廻り縁用の表装材１Ｂ，１Ｃに係合部５を設けている。この係合部５は、後に説明する立上り材１Ｅの下端を固定するためのものであり、表装材１Ｂ，１Ｃの敷設時において、床面の周囲に位置する縁部に溝５ａとして形成されている。なお、この係合部５については、後に説明する施工法で詳述する。
【００４２】
図６に示す表装材１（１Ｄ）は、主に被施工面たる床面の角部（隅部）に配されるコーナー材であり、シート材３は、基材２の２角を間に配して連続する３辺に亘り重ね代Ｗを残すように貼着されている。
【００４３】
図７に示す表装材１（１Ｅ）は、被施工面たる床面の周囲に立ち上がる側壁に配される立上り材であり、シート材３は、基材２の一角を挟んで連続した２辺に亘り重ね代Ｗを残すように貼着されている。また、この立上り材１Ｅに形成される切り欠き４は、施工時において立上り材１Ｅの下端に位置する縁部と、その縁部の一角を挟んで連続した１辺に設けられている。
【００４４】
また、本実施の形態では、上記各表装材１Ａ〜１Ｅに用いられる基材２の縁部に可撓性を有する防水パッキン（防水部材）を設けている。この防水パッキンは、表装材１の継ぎ目Ｔからの浸水を抑制する一次防水機能と、基材２間で緩衝材として機能することで基材２の角割れを防止するといった効果を奏する。
【００４５】
このように本実施の形態では、複数種の表装材１Ａ〜１Ｅを用いて被施工面の施工にのぞむ。また、本実施の形態では、上記した複数種の表装材１Ａ〜１Ｅによって本発明に係る防水施工用表装材セットを構成している。また、本願特許請求の範囲の記載事項との兼ね合いでは、表装材１Ａ，表装材１Ｂ，表装材１Ｅによって第１の表装材が構成され、表装材１Ｃ，表装材１Ｄによって第２の表装材が構成されている。さらに、表装材１Ａ〜１Ｄで敷設用の表装材が構成され、表装材１Ｅで側壁用の表装材が構成されている。
【００４６】
続いて、上記防水施工用表装材セットを用いた施工方法について、木造住宅に設けられたルーフバルコニの施工を例に説明する。また、図８中矢印Ｋは、ルーフバルコニの床面（コンクリートスラブ）上に設けられた水勾配の傾斜に相当し、本施工例では、図８中左上が水勾配の上流側に相当する。また、図８中右下が水勾配の下流側に相当する。またなお、防水施工用表装材セットに含まれる各種表装材１Ａ〜１Ｅは予め工場で製作され、施工時には、工場から施工現場に搬入されて施工に供される。
【００４７】
まず、作業者は、被施工面たる床面の寸法（幅及び奥行き）を測定し、床面の廻り縁に配すべき表装材１Ｂ，１Ｃとコーナー材１Ｄを割り付ける。
なお、ここで「割り付け」とは、規格品として施工現場内に搬入される表装材の寸法を考慮して、施工対象たる床面に配置すべき表装材の数や配列等を割り出す作業に相当する。
【００４８】
続いて、この廻り縁用の表装材１Ｂ，１Ｃ並びにコーナー材１Ｄの寸法を差し引き、この廻り縁用表装材１Ｂ，１Ｃの内側に配すべき平板材１Ａの割り付け作業を行う。
【００４９】
続いて、被施工面たる床面（コンクリートスラブ）上に接着剤を塗布し、適所に割り当てられた各種表装材１Ａ〜１Ｄを、水勾配の下流側から上方側に向かって順次全面接着していく。なお、本実施の形態では、接着剤として防湿性及び防水性に富むクロロブレンゴム・フェノール樹脂系接着剤を使用している。
【００５０】
また、このとき各表装材１Ａ〜１Ｄは、図２に示されるように、水勾配下流側に配された表装材１の重ね代Ｗが、水勾配上流側に配される表装材１の空隙Ｃに収まるように貼り付けられる。また、余分な重ね代Ｗは、必要に応じてカッター等で切り取りながら貼付作業を進めていく。
【００５１】
続いて、表装材１Ａ〜１Ｄの敷設作業を終えた後、ルーフバルコニの周壁Ｐ（側壁）に対する表装材１Ｅの取付作業に移る。
本作業では、まず、図１及び図２に示されるように廻り縁用の表装材１Ｂ（１Ｃ）に形成された溝５ａに立上り材１Ｅの下端の嵌合させ、ルーフバルコニの周壁Ｐと溝５ａとの間で立上り材１Ｅの下端を固定する。
【００５２】
続いて、立上り材１Ｅの上端から約１０ｍｍ下がった位置に係止部材８（例えば、ステアリングネイル）を打ち込み、立上り材１Ｅの上部をルーフバルコニの周壁に留める。よって、立上り材１Ｅは、その下端と上部でルーフバルコニの周壁Ｐに固定されることとなる。
【００５３】
また、立上り材１Ｅの取付作業を終えた後、ウレタン系塗料に硅砂を混ぜたトップコートを各表装材１Ａ〜１Ｄの表面に塗布して滑り止め加工を行う。そして、最後に、立上り材１Ｅの上端に、カラー鉄板等を折り曲げて形成した水切り板６を取り付け、この立上が材１Ｅの上部を留める係止部材８を覆い隠すと共に、立上り材１Ｅ上部での防水性を確保する。
【００５４】
このように本実施の形態では、耐火性を有する基材２と、防水性を有するシート材３とを一体に備えた表装材１を施工現場に搬入し、被施工面の適所に割り付けて配置することで、防水処理と、防火処理と、化粧加工の全てを一元化して処理している。
【００５５】
また、上記施工例のように、２辺に亘り重ね代Ｗを有する表装材と、３辺に亘り重ね代Ｗを有する表装材を組み合わせて適所に配置すれば、表装材相互に重なり合う部分を一表装材に於いて少なくとも２カ所確保しながら、被施工面全体を隙間無く覆い隠すことができる。よって表装材の継ぎ目に於ける防水性能を、単にシーリング材に頼った場合に比べて格段に向上させることができる。
【００５６】
また、他の表装材から延びる重ね代Ｗは、一方の表装材裏面側に形成された空隙Ｃ内に収まるため、一方の表装材と、他の表装材の重ね代Ｗとが重なり合うことで生じる継ぎ目Ｔの隆起は、この空隙Ｃによって吸収されることとなる。よって、平坦な表面が得られる。
【００５７】
なお、上記実施形態は、あくまでも本発明の一実施形態にすぎず、その詳細は、各種仕様に応じて種々変更可能である。
【００５８】
例えば、上記では、基材２の裏面側に空隙Ｃを形成するにあたり、基材２そのものに切り欠き４を設けて空隙Ｃを確保しているが、必ずしもその必要はなく、空隙Ｃを確保すべき箇所に於いて、その基材２裏面側に貼着されるシート材３の一部を予め切り欠いて於けば、切り欠き４に相当する空隙Ｃを該基材２の裏面側に形成することができる。
【００５９】
また、上記実施の形態では、施工の最終過程に於いてトップコートを塗布しているが、基材２そのものの素地を露出させることで、種々の意匠性を施工面に持たせることも可能である。
【００６０】
例えば、防水施工用表装材セットの中に、基材の外観が相互に異なる表装材を少なくとも１組以上含ませ、この外観の異なる基材を備えた表装材の配置パターンを変更することで、種々の模様や色彩を施工面に写し出すことが可能となる。
【００６１】
また、具体的一例を挙げれば、図９に示されるように、基材の色彩が異なる表装材２ａ，２ｂを被施工面に対して千鳥に敷設することで、色彩豊かな模様を施工面に写し出すことができる。
また、図１０に示すように、四角形状をなす基材２ｃが起用された表装材２ｃと、三角形状をなす基材２ｄが起用された表装材２ｄとを組み合わせて使用すれば、図８及び図９と異なるデザインの床面を形成できる。
【００６２】
このように、本防水施工用表装材セットでは、基材の外観が相互に異なる表装材を複数種類用意することで、カラーバリエーションや、デザイン等の意匠性に富む施工面を容易に得ることができる。
【００６３】
【発明の効果】
以上のように本発明によれば、防水施工時において各種工程の一元化を図れ、また、施工面の平滑性も得られる防水施工用の表装材を提供できる。また、施工面全体に高い防水性能を確保し得る防水施工用表装材セットを提供できる。
【図面の簡単な説明】
【図１】本実施の形態に係る防水施工用の表装材を用いて施工されたルーフバルコニの施工状態を示す斜視図。
【図２】図１の要部拡大断面図。
【図３】防水施工用表装材セットに含まれる平板材の斜視図。
【図４】防水施工用表装材セットに含まれる廻り縁用の上材の斜視図。
【図５】防水施工用表装材セットに含まれる廻り縁用の下材の斜視図。
【図６】防水施工用表装材セットに含まれるコーナー材の斜視図。
【図７】防水施工用表装材セットに含まれる立上り材の斜視図。
【図８】本実施の形態に係る防水施工用表装材セットを用いて施工されたルーフバルコニの平面図。
【図９】色彩の異なる表装材を組み合わせて施工した本実施の形態に係るルーフバルコニの平面図。
【図１０】形状の異なる表装材を組み合わせて施工した本実施の形態に係るルーフバルコニの平面図。
【符号の説明】
１表装材
１Ａ平板材
１Ｂ廻り縁用の上材
１Ｃ廻り縁用の下材
１Ｄコーナー材
１Ｅ立上り材
２基材
３シート材
４切り欠き
５係合部
５ａ溝
６水切り板
７防水パッキン
８係止部材（ステンレスリングネイル）
Ｃ空隙
Ｔ継ぎ目
Ｗ重ね代[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a facing material, and more particularly, to a facing material for waterproofing construction. Further, the present invention relates to a waterproofing surface material set.
[0002]
[Prior art]
In a roof balcony or a flat roof, various processes are performed in order to secure waterproofness and fire resistance of the floor surface. In recent years, waterproof construction surfaces that have been subjected to decorative processing in order to improve aesthetics and stain resistance have also been seen.
[0003]
More specifically, first, a leveling mortar is applied to the work surface (concrete slab), and then a waterproof sheet is laid on the leveling mortar to obtain waterproofness. In addition, fire resistance is ensured by hitting the leveling mortar again on the waterproof sheet.
Also, when applying a cosmetic process, apply an adhesive on a leveling mortar and spread a large number of decorative materials (for example, tiles). This prevents the peeling (non-landing) of the cosmetic material due to the inundation of the water.
As described above, conventionally, a waterproof construction surface is formed by obtaining various processes.
[0004]
[Problems to be solved by the invention]
By the way, when building a house or the like, it is necessary to satisfy a certain standard defined by the Building Law (Building Standards Law). In the case of roof balconies, flat roofs, etc., it is necessary to obtain fire prevention certification.Conventionally, as shown in the above method, fireproofing leveling mortar is applied to a waterproof sheet as shown in the above method. Was secured.
[0005]
However, the leveling mortar has a large specific gravity and may cause a large load on a building. In addition, when performing a decorative process on the leveling mortar, it is necessary to wait for curing and hardening of the leveling mortar, and there is room for improvement in terms of the construction period and the cost.
[0006]
On the other hand, when the amount of the leveling mortar is reduced, the skin becomes thin after the construction, which leads to the generation of cracks and water pools. In particular, roof balconies, flat roofs, and the like are required to have high drainage because people are expected to enter and exit. In other words, how to obtain a construction surface with excellent smoothness in waterproof construction is an important issue in construction.
[0007]
The present invention has been made in view of such a technical background, and aims to unify various processes in waterproofing work, and also to provide a surface covering material for waterproofing work that can also obtain smoothness of a work surface. Make it an issue.
[0008]
[Means for Solving the Problems]
The present invention has the following configuration in order to solve the above technical problem.
That is, the present invention integrally comprises a fire-resistant base material and a waterproof sheet material attached to the back surface of the base material, and the sheet material is adjacent to another surface material. Is provided so as to protrude from the outer edge of the base material so as to form an overlap allowance, and a gap is provided on the back surface side of the base material to avoid interference with an overlap allowance extending from another adjacent surface material. It is characterized by the following.
[0009]
In the present invention configured as described above, the base material having fire resistance and the sheet material having waterproofness are integrally provided, and the sheet material is attached to the back surface of the base material in a state of protruding from the outer edge of the base material. Have been. In addition, the overhang forms an overlap margin on the edge of the base material. Further, on the back surface side of the base material, there is provided a gap for avoiding interference with an overlap margin extending from another adjacent surface material.
[0010]
Therefore, when a plurality of the facing materials of the present invention are arranged side by side on the surface to be waterproofed, the waterproofness of the joint of the facing materials is ensured by the overlapping margin of each facing material. In addition, the bulge of the seam caused by the overlap between the facing material and the overlap allowance extending from another facing material is absorbed by the void provided on the back surface side of the base material, so that a flat surface is obtained even after construction. Can be
[0011]
The base material is made of a material having high fire resistance as described above, and the sheet material is made of a material having a high waterproof property. In addition, since the base material and the sheet material are integrated by sticking, at the time of construction, the surface treatment material consisting of the base material and the sheet material is carried into the construction site and attached to the construction surface, so that the waterproof treatment and In addition, it is possible to unify all of the fire prevention processing and the cosmetic processing.
[0012]
Further, the gap may be formed by cutting a back surface of an edge portion of the base material located in a direction opposite to an extending direction of the overlap margin.
[0013]
In this configuration, a gap is formed by cutting the base material itself. Therefore, in this case, the sheet materials of the respective facing materials can be overlapped with each other on the back surface side of the base material, and a more excellent waterproof structure can be obtained. In addition, since the notch is formed on the back surface of the edge of the base material that is opposite to the extending direction of the overlapping margin, when laying on a floor surface with a water gradient, the overlapping margin is set upstream of the water gradient. By arranging it toward the side, higher waterproof performance can be obtained.
[0014]
Further, it is preferable that the gap formed by cutting the back surface of the base material has a depth substantially equal to the thickness of the sheet material.
[0015]
In this configuration, the base material provided on one of the surface mounting materials, the sheet material attached to the back surface of the base material, and the sheet material extending from the other surface mounting material overlap the seam of the surface mounting material, that is, each member overlaps each other. High waterproof performance is obtained because the parts are in close contact with no gap. Further, the peeling (unevenness) of the sheet material is suppressed by the weight of the base material. In addition, there is obtained an advantage that the overlapping sheet members are reinforced and the rigidity of the base material can be improved.
[0016]
Further, a configuration may be employed in which a flexible waterproof member is provided at an edge of the base material.
In this configuration, since a flexible waterproof member is provided at the edge of the base material, when the respective surface covering materials are joined, the waterproof member suppresses infiltration from the joint. In addition, the shock or the like acting on each base material can be absorbed by the cushioning action of the flexible waterproof member.
[0017]
Further, the base may be configured to use a siding material.
Here, the “siding material” corresponds to a so-called “special cement molding material” molded using fiber-mixed cement and either calcium silicate or calcium lime silicate as main components. Further, it is more preferable to use siding waste material that is discharged as waste material when constructing or dismantling a house or the like.
[0018]
Further, in the present invention, in order to solve the above-mentioned technical problem, the following waterproofing surface material set is provided.
That is, the present invention provides a waterproofing construction comprising a base material having fire resistance and having at least three sides around, and a waterproof sheet material attached to the back surface of the base material. It is a surface material set for waterproof construction composed of surface materials,
A first facing material adhered to the sheet material so as to form an overlap margin along two continuous sides of one corner of the base material;
A second facing material, wherein the sheet material is stuck so as to form an overlap margin along three continuous sides with two corners of the base material interposed therebetween;
A surface covering material set for waterproofing construction comprising:
[0019]
The waterproofing surface covering material set of the present invention configured as described above has a first surface covering material having an overlapping margin along two continuous sides sandwiching one corner of the base material, and the two corners of the base material interposed therebetween. And a second facing material having overlapping margins along three continuous sides arranged.
[0020]
Therefore, by combining and allocating the first and second surface covering materials in place, the covering material can be secured while securing at least two or more portions where the sheeting materials overlap with each other in one surface material. The entire construction surface can be efficiently covered and hidden.
[0021]
In addition, the waterproofing surface covering material set includes a surface covering material for laying to be laid on a floor surface to be constructed, and a side wall surface covering material for covering a side wall rising from the floor surface,
The edge of the laying surface material may be provided with an engaging portion for engaging with a lower end of the side wall surface material.
In this configuration, an engaging portion capable of engaging with the lower end of the side wall covering material is provided at the edge of the laying surface covering material. For this reason, at the time of construction, by engaging the lower end of the side wall surface covering material with this engaging portion, it is possible to prevent the side wall surface covering material from rising to the side wall. That is, in fixing the side wall surface material, the side wall can be fixed without using nails or screws. Therefore, it is possible to avoid a decrease in waterproofness due to the use of nails and screws, to shorten the construction period and construction costs, and to improve the appearance.
[0023]
The waterproofing surface material set may include at least one or more sets of surface materials having different appearances of the base material.
[0024]
In this configuration, since the appearance of the base material includes at least one set of surface materials different from each other, at the time of construction, by appropriately changing the arrangement and the arrangement direction of the surface materials having the base materials having different appearances. In addition, various design properties can be imparted to the construction surface. Here, "different in appearance" corresponds to a visually distinguishable difference in appearance such as pattern, color, shape (including surface shape), area, and thickness.
[0025]
Further, the gap may be formed by cutting a back surface of an edge portion of the base material located in a direction opposite to an extending direction of the overlap margin. Further, a configuration may be employed in which a flexible waterproof member is provided at an edge of the base material. It is desirable to use a siding material for the base material.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a surface covering material for waterproofing and a surface covering material set for waterproofing according to the present invention will be described.
[0027]
As shown in FIGS. 1 and 2, a facing material 1 for waterproofing according to the present invention includes a base material 2 having fire resistance, and a sheet material 3 having waterproofness attached to the back surface of the base material 2. , Are integrally provided. The surface covering material 1 including the base material 2 and the sheet material 3 is laid on the work surface with the sheet material 3 facing downward.
[0028]
The base material 2 is made of a siding board cut into a rectangle as shown in FIG. In addition, "siding board" is equivalent to a so-called "special cement molding material" molded using fiber-mixed cement and either calcium silicate or calcium lime silicate as a main component, and has a smaller specific gravity than concrete. In recent years, it has been widely used as an outer wall material of buildings because of its properties such as high fire resistance and impact resistance.
[0029]
Further, in the present embodiment, as a siding board used for the base material 2, siding waste material, that is, a piece of the siding board, which is left over during the construction around the window frame, for example, when the house is constructed, is used.
About 800 kg of this kind of siding waste material is generated at the time of construction of a wooden house with a floor area of 25 tsubo, and since it has high fire resistance, it can not be incinerated. In recent years, concrete proposals for the disposal have been made. There is a current situation that it is used without being done. Therefore, in the present embodiment, by using this siding waste material for the base material 3, resources can be reused (recycled) and the natural environment can be improved.
[0030]
On the other hand, the sheet material 3 is a general-purpose waterproof sheet represented by, for example, a homogeneous vulcanized rubber, a rubber asphalt sheet, a vinyl chloride sheet, and the like, and has high waterproof performance.
Further, the sheet material 3 is largely cut from the base material 2 to be attached, and the sheet material 3 is formed so as to form the overlap margin W along the edge of the base material 2 at the time of manufacturing the front cover material 1. 3 is attached to the back surface of the base material 2.
[0031]
Although various examples of the method of attaching the sheet material 3 can be given, various shapes of the work surface can be accommodated by adopting the attachment patterns shown in FIGS. The attaching method will be described later in detail.
[0032]
Further, in the present embodiment, a void C is provided on the back surface side of the base material 2 in order to suppress the protrusion caused by the overlapping margin W overlapping the other facing material 1.
More specifically, as shown in FIG. 2, interference between one of the facing materials 1 (Y in FIG. 2) and the overlap allowance W of another facing material 1 (X in FIG. 2) adjacent to the facing material 1. In order to avoid this, a notch is formed in advance on the back surface of the base material 2 at a depth substantially equal to the thickness of the sheet material 3, and the notch 4 causes a local protrusion at the seam T of the surface material 1. Has been suppressed.
[0033]
As described above, when the depth of the notch 4 (gap C) is set to a depth substantially equal to the thickness of the sheet material 3, the seam T of each of the facing materials 1, 1 ie, each of the facing materials 1, 1 In the portion where the sheet materials 3 overlap each other, the base material 2 of the facing material 1 (Y), the sheet material 3 adhered to the back surface of the base material 2, and the other facing material 1 (X ) And the sheet material 3 (overlap width W) extending from the sheet material 3 comes into close contact with no gap. Therefore, the waterproof performance of the joint T is enhanced, and the peeling (non-landing) of the sheet material 3 can be suppressed by the weight of the base material 2. Further, since the sheet material 3 overlapping below the gap C serves to reinforce the base material 2 located above the gap C, the rigidity of the base material 2 above the gap C can be improved.
[0034]
Subsequently, a method for attaching the sheet material 3 will be described together with a method for forming the notch 4.
[0035]
First, the facing material 1 (1A) shown in FIG. 3 corresponds to a flat plate material laid on the floor surface, which is the work surface, and the sheet material 3 extends over two continuous sides of one corner of the base material 2. It is stuck so as to leave the overlap allowance W. More specifically, at the time of laying the surface material 1 (1A), the overlapping margin W is provided so as to protrude upstream of the water gradient.
[0036]
The notch 4 is formed along the edge of the base material 2 located in a direction opposite to the overlap width W. That is, at the time of laying the facing material 1 (1A), the notch 4 is formed along the edge of the base material 2 located on the downstream side of the water gradient.
[0037]
The surface material 1 (1B) shown in FIG. 4 is an upper material for a peripheral edge mainly arranged on the peripheral edge of the floor surface, and the sheet material 3 is a corner of the base material 2 in the same manner as the flat material 1A. Are pasted so as to leave the overlap margin W over two continuous sides with. In addition, the “top material” here corresponds to a surface material arranged on the upstream side of the water gradient at the time of construction.
[0038]
The relative position of the overlap margin W and the notch 4 is the same as that of the above-described flat plate 1A, the overlap margin W is provided on the upstream side of the water gradient, and the notch 4 is formed on the downstream side of the water gradient. I have.
[0039]
The relative positional relationship between the overlap allowance W and the notch 4 is slightly different depending on the arrangement of the facing material 1, the shape of the work surface, and the shape of the facing material 1. As described above, the overlap margin W is formed on the upstream side of the water gradient, and the notch 4 is formed on the downstream side of the water gradient.
[0040]
The surface material 1 (1C) shown in FIG. 5 is a lower material for a peripheral edge mainly arranged at the peripheral edge of the floor surface, and the sheet material 3 is continuous with two corners of the base material 2 interposed therebetween. It is stuck so that the overlap margin W is left over three sides. In addition, the “lower material” here corresponds to a surface material arranged on the downstream side of the water gradient at the time of construction.
[0041]
Further, in the present embodiment, the engaging portions 5 are provided on the outer facing materials 1B and 1C for the surrounding edges. The engaging portion 5 is for fixing a lower end of a rising material 1E, which will be described later, and is formed as a groove 5a in an edge located around the floor surface when laying the facing materials 1B and 1C. I have. The engagement portion 5 will be described in detail in a construction method described later.
[0042]
6 is a corner material mainly disposed at a corner (corner) of a floor surface, which is a work surface, and a sheet material 3 has two corners of the base material 2 interposed therebetween. It is stuck so as to leave the overlap margin W on three consecutive sides.
[0043]
The facing material 1 (1E) shown in FIG. 7 is a rising material arranged on a side wall rising around the floor surface, which is a work surface, and the sheet material 3 is formed on two continuous sides of one corner of the base material 2. It is stuck so as to leave the overlap allowance W. In addition, the notch 4 formed in the rising material 1E is provided at an edge located at the lower end of the rising material 1E at the time of construction, and on one side continuous with one corner of the edge.
[0044]
Further, in the present embodiment, a flexible waterproof packing (waterproof member) is provided at an edge of the base material 2 used for each of the above-mentioned outer covering materials 1A to 1E. The waterproof packing has a primary waterproofing function of suppressing infiltration from the joint T of the surface mounting material 1 and an effect of preventing a corner crack of the base material 2 by functioning as a buffer between the base materials 2.
[0045]
As described above, in the present embodiment, the construction of the work surface is desired by using a plurality of types of surface materials 1A to 1E. Further, in the present embodiment, the above-described plurality of types of surface covering materials 1A to 1E constitute a waterproofing surface covering material set according to the present invention. Further, in consideration of the matters described in the claims of the present application, a first surface material is constituted by the surface material 1A, the surface material 1B, and the surface material 1E, and a second surface material is constituted by the surface material 1C and the surface material 1D. It is configured. Further, the surface covering materials 1A to 1D constitute the surface covering material for laying, and the surface covering material 1E constitutes the surface covering material for the side wall.
[0046]
Next, a construction method using the waterproofing surface covering material set will be described by taking as an example a construction of a roof balcony provided in a wooden house. Further, the arrow K in FIG. 8 corresponds to the inclination of the water gradient provided on the floor surface (concrete slab) of the roof balcony, and in the present construction example, the upper left in FIG. 8 corresponds to the upstream side of the water gradient. The lower right in FIG. 8 corresponds to the downstream side of the water gradient. In addition, the various surface covering materials 1A to 1E included in the waterproofing surface covering material set are manufactured in advance in a factory, and are carried into the construction site from the factory and used for construction during construction.
[0047]
First, the worker measures the dimensions (width and depth) of the floor surface, which is the work surface, and allocates the surface materials 1B, 1C and the corner materials 1D to be arranged around the floor surface.
The term "assignment" here refers to the work of determining the number and arrangement of surface materials to be placed on the floor to be constructed, taking into account the dimensions of the surface materials to be carried into the construction site as standard products. I do.
[0048]
Subsequently, the dimensions of the surrounding material 1B, 1C and the corner material 1D are subtracted, and the work of allocating the flat material 1A to be arranged inside the surrounding material 1B, 1C is performed.
[0049]
Subsequently, an adhesive is applied on a floor surface (concrete slab) as a work surface, and various surface covering materials 1A to 1D assigned to appropriate places are sequentially and entirely adhered from the downstream side of the water gradient to the upper side. Go. In the present embodiment, a chlorobrene rubber-phenol resin-based adhesive having excellent moisture-proof and waterproof properties is used as the adhesive.
[0050]
At this time, as shown in FIG. 2, each of the facing materials 1 A to 1 D has an overlapping width W of the facing material 1 disposed on the downstream side of the water gradient, and a gap of the facing material 1 disposed on the upstream side of the water gradient. Pasted to fit in C. In addition, the excess overlapping allowance W proceeds as the cutting operation is performed, as necessary, with a cutter or the like.
[0051]
Subsequently, after finishing the work of laying the facing materials 1A to 1D, the process proceeds to the work of attaching the facing material 1E to the peripheral wall P (side wall) of the roof balcony.
In this work, first, as shown in FIGS. 1 and 2, the lower end of the rising material 1E is fitted into the groove 5a formed in the surrounding material 1B (1C), and the peripheral wall P of the roof balcony is connected to the groove. The lower end of the rising member 1E is fixed to the lower end of the rising member 1A.
[0052]
Subsequently, the locking member 8 (for example, a steering nail) is driven into a position about 10 mm below the upper end of the rising member 1E, and the upper part of the rising member 1E is fixed to the peripheral wall of the roof balcony. Therefore, the rising member 1E is fixed to the peripheral wall P of the roof balcony at its lower end and upper part.
[0053]
Further, after finishing the work of mounting the rising material 1E, a top coat obtained by mixing silica sand with a urethane-based paint is applied to the surface of each of the facing materials 1A to 1D to perform a non-slip processing. Finally, a draining plate 6 formed by bending a color iron plate or the like is attached to the upper end of the rising member 1E, and this rising covers and covers the locking member 8 that holds the upper portion of the member 1E. Ensure waterproofness.
[0054]
As described above, in the present embodiment, the surface covering material 1 integrally provided with the base material 2 having fire resistance and the sheet material 3 having waterproofness is carried into the construction site, and is allocated and arranged at an appropriate position on the work surface. By doing so, the waterproofing process, the fireproofing process, and the makeup process are all unified.
[0055]
Further, as in the above-described construction example, if the surface covering material having the overlapping margin W over two sides and the surface covering material having the overlapping margin W over three sides are combined and arranged at an appropriate position, a portion where the surface covering materials overlap each other is reduced by one. It is possible to cover and cover the entire work surface without any gaps while securing at least two places in the surface covering material. Therefore, the waterproof performance at the joint of the surface material can be remarkably improved as compared with a case where the sealing material is simply used.
[0056]
In addition, since the overlap allowance W extending from the other front cover material is contained in the gap C formed on the back surface side of one of the cover materials, the overlap allowance W occurs when one of the cover materials overlaps with the overlap allowance W of the other cover material. The ridge of the seam T is absorbed by the gap C. Therefore, a flat surface is obtained.
[0057]
The above embodiment is merely an embodiment of the present invention, and details thereof can be variously changed in accordance with various specifications.
[0058]
For example, in the above, when forming the gap C on the back surface side of the base material 2, the cutout 4 is provided in the base material 2 itself to secure the gap C, but it is not always necessary to secure the gap C. If a part of the sheet material 3 to be adhered to the back side of the base material 2 is cut out in advance at a place to be formed, a gap C corresponding to the notch 4 is formed on the back side of the base material 2. can do.
[0059]
Further, in the above embodiment, the top coat is applied in the final step of construction, but by exposing the base material of the base material 2 itself, it is possible to impart various design properties to the construction surface. is there.
[0060]
For example, in the waterproofing surface material set, at least one set of surface materials having different appearances of the base materials are included, and by changing the arrangement pattern of the surface materials with the base materials having different appearances, Various patterns and colors can be displayed on the construction surface.
[0061]
As a specific example, as shown in FIG. 9, as illustrated in FIG. 9, by laying the surface materials 2 a and 2 b having different colors of the base material in a staggered manner on the surface to be processed, a colorful pattern can be formed on the surface to be processed. Can be projected.
Further, as shown in FIG. 10, when a surface mounting material 2 c having a square base material 2 c and a surface mounting material 2 d having a triangular base material 2 d are used in combination, FIG. 8 and FIG. A floor surface having a design different from that of FIG. 9 can be formed.
[0062]
As described above, in the waterproofing surface covering material set, by preparing a plurality of types of surface covering materials having different base materials from each other, it is possible to easily obtain a construction surface with rich design features such as color variations and designs. it can.
[0063]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a surface-treating material for waterproofing work in which various steps can be unified at the time of waterproofing work and the smoothness of the work surface can be obtained. Further, it is possible to provide a waterproofing surface material set that can ensure high waterproofing performance over the entire construction surface.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a construction state of a roof balcony constructed using a surface covering material for waterproof construction according to the present embodiment.
FIG. 2 is an enlarged sectional view of a main part of FIG.
FIG. 3 is a perspective view of a flat material included in a waterproofing surface material set.
FIG. 4 is a perspective view of a surrounding edge upper material included in the waterproofing surface material set.
FIG. 5 is a perspective view of a lower material for a surrounding edge included in the waterproofing surface material set.
FIG. 6 is a perspective view of a corner material included in the waterproofing surface material set.
FIG. 7 is a perspective view of a rising material included in the waterproofing surface material set.
FIG. 8 is a plan view of a roof balcony that is constructed using the waterproofing surface material set according to the present embodiment.
FIG. 9 is a plan view of the roof balcony according to the present embodiment constructed by combining surface materials having different colors.
FIG. 10 is a plan view of the roof balcony according to the present embodiment constructed by combining surface covering materials having different shapes.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 front cover material 1A flat material 1B upper material for surrounding edge 1C lower material for surrounding edge 1D corner material 1E rising material 2 base material 3 sheet material 4 notch 5 engaging portion 5a groove 6 draining plate 7 waterproof packing 8 locking Material (stainless ring nail)
C void T seam W overlap allowance

Claims

A base material having fire resistance and a sheet material having waterproofness attached to the back surface of the base material are integrally provided, and the sheet material forms an overlap margin with another adjacent surface material. Waterproofing is provided so as to protrude from an outer edge of the base material, and further, on the back surface side of the base material, a gap is provided to avoid interference with an overlap allowance extending from another adjacent surface material. Surface materials for construction.

The front cover for waterproofing according to claim 1, wherein the gap is formed by cutting a back surface of an edge portion of the base material located in a direction opposite to an extending direction of the overlap margin. Wood.

3. The surface covering material according to claim 2, wherein the gap formed by cutting the back surface of the base material has a depth substantially equal to the thickness of the sheet material. 4.

The waterproofing material according to any one of claims 1 to 3, wherein a flexible waterproof member is provided at an edge of the base material.

The surface material for waterproofing according to any one of claims 1 to 4, wherein a siding material is used for the base material.

A waterproof construction comprising a base material having fire resistance and having at least three sides around, and a waterproof sheet material adhered to the back surface of the base material for waterproof construction. Surface material set for
A first facing material adhered to the sheet material so as to form an overlap margin along two continuous sides of one corner of the base material;
A second facing material, wherein the sheet material is stuck so as to form an overlap margin along three continuous sides with two corners of the base material interposed therebetween;
A surface covering material set for waterproofing construction comprising:

The waterproofing surface covering material set includes a surface covering material for laying to be laid on a floor to be constructed and a side wall surface covering material for covering a side wall rising from the floor surface, and the laying surface covering material is included. The surface material set for waterproofing according to claim 6, wherein an edge portion of the material is provided with an engagement portion that engages with a lower end of the wall material.

The waterproofing surface treatment material set according to claim 6, wherein the waterproofing surface treatment material set includes at least one or more sets of surface treatment materials whose appearances of the base materials are different from each other.

The waterproofing construction according to any one of claims 6 to 8, wherein a void is provided on the back surface side of the base material so as to avoid interference with an overlap allowance extending from another adjacent surface material. Surface material set.

The waterproofing material according to claim 9, wherein the gap is formed by cutting a back surface of an edge of the base material located in a direction opposite to a direction in which the overlap margin extends. set.

The facing material set for waterproofing according to claim 10, wherein the gap formed by cutting the back surface of the base material is cut at a depth substantially equal to the thickness of the sheet material.

The waterproof covering material set according to any one of claims 6 to 11, wherein a flexible waterproof member is provided at an edge of the base material.

The surface material set for waterproofing according to any one of claims 6 to 12, wherein a siding material is used for the base material.