JP4390974B2

JP4390974B2 - Roof structure for renovation and its construction method

Info

Publication number: JP4390974B2
Application number: JP2000146268A
Authority: JP
Inventors: 利弘増田; 忠勝須賀; 和英大川
Original assignee: Misawa Homes Co Ltd
Current assignee: Misawa Homes Co Ltd
Priority date: 2000-05-18
Filing date: 2000-05-18
Publication date: 2009-12-24
Anticipated expiration: 2020-05-18
Also published as: JP2001323604A

Description

【０００１】
【発明の属する技術分野】
本発明は、屋根材の表面に設けられる改装用屋根構造およびその施工方法に関するものである。
【０００２】
【背景技術】
従来より、建物の屋根には、その屋根面上に、瓦等の屋根材を勾配方向に重ねて取り付けたものが多い。このような屋根材で葺いた屋根を葺き替えるには、屋根材を全部剥がして新しい屋根材に葺き替えることが行われるが、これは、屋根材を剥がすのに手間がかかる上、建物を使用しながら葺き替えることが困難であった。
そこで、近年、既設の屋根構造の表面に改装用の屋根材を取り付けて、この既設の屋根構造を覆うことで、屋根の葺き替えを行っている。（特公平3-54227号公報、特願平11-247628等参照）。
【０００３】
これらのうち、特公平3-54227号公報に開示された構造は、既設の屋根構造の上に複数の改装用屋根材が配置され、その各改装用屋根材の勾配方向上部が、既設の屋根構造に固定されて、勾配方向上側に隣接する改装用屋根材下端部の連結部分が、勾配方向下側に隣接する改装用屋根材の固定部分を覆うとともに、その固定部分近傍に設けられた被連結部分と係合された構造である。
したがって、各改装屋根材同士の連結部分が密接に連結されることによって一体化され、屋根の防水性能が発揮される。
【０００４】
また、特願平11-247628に開示された構造は、既設の屋根構造の上に複数の改装用屋根材が配置され、その各改装用屋根材は、その勾配方向上端部が既設の屋根材間に挟持され、かつ、既設の屋根構造に固定され、勾配方向下端部が既設の屋根材に係合された構造である。
したがって、改装用屋根材の勾配方向下端部が既設の屋根材に係合され、勾配方向上端部が既設の屋根材間に挟持されることにより、各改装屋根材同士が密接に連結されることによって一体化され、屋根の防水性能が発揮される。
【０００５】
【発明が解決しようとする課題】
しかし、特公平3-54227号公報や特願平11-247628等に開示された構成では、経年劣化による既存の屋根材のふくれやめくれ等が生じた場合に、改装用屋根材同士の密着が不十分になって、防水性能が低下するおそれがあった。
【０００６】
本発明の目的は、既設の屋根構造に不具合があった場合でも防水性能を発揮する改装用屋根構造およびその施工方法を提供することにある。
【０００７】
【課題を解決するための手段】
本発明を図面を参照して説明する。
請求項１に記載された発明は、既設の屋根構造の表面に設けられる改装用屋根構造であって、前記既設の屋根構造の表面を覆う防水層３８と、この防水層３８の上に連結配置された複数の改装用屋根材３０を有し、当該改装用屋根材３０は、当該改装用屋根材３０の勾配方向Ｂ上部に形成され、前記既設の屋根構造に固定される固定部３６と、当該固定部３６より勾配方向Ｂ下方に形成された被連結部３５と、前記改装用屋根材３０の勾配方向Ｂ下部に形成され、当該改装用屋根材３０の勾配方向Ｂ下側に隣接する改装用屋根材３０の被連結部３５に連結する連結部３２とを備えるとともに、前記連結部から前記固定部に至る第１部材と、前記固定部から前記被連結部に至る第２部材とを含んで構成され、前記第１部材は、前記連結部と、この連結部よりも勾配方向上部に形成される固定部とを備え、前記連結部は、当該第１部材の勾配方向下端部を下向きに折り曲げて形成された折曲げ片と、この折曲げ片の先端をさらに内側に折り曲げて形成された挟持片とを含んで構成され、前記第２部材は、前記被連結部と、前記第１部材の固定部と重ねて前記既設の屋根構造に固定される固定部とを備え、前記被連結部は、前記固定部の勾配方向下端部を上向きに折り曲げて形成された立上がり片と、この立上がり片の先端を勾配方向下方に折り曲げて形成された支持片と、この支持片の先端を下向きに折り曲げて形成された被挟持片とを含んで構成され、前記第２部材に対して勾配方向上側に隣接する改装用屋根材の第１部材が支持片上に載置されるとともに、前記被挟持片を前記挟持片で挟持することで、当該第２部材と当該上側の第１部材とが連結されることを特徴とする改装用屋根構造である。
【０００８】
この発明によれば、改装用屋根構造は、既設の屋根構造上にそれを覆う防水層３８が設けられ、その上に改装用屋根材３０が複数連結配置されて構成される。そして、改装用屋根材３０が固定部３６で各々固定されることにより既設の屋根構造と一体化される。その際、固定部３６がそれより勾配方向Ｂ上側に隣接する改装用屋根材３０に覆われるとともに、その勾配方向Ｂ上側の改装用屋根材３０の連結部３２と勾配方向Ｂ下側の改装用屋根材の被連結部３５とが連結され、固定部３６は浸水しないようになっている。したがって、防水性能を発揮できる。
【０００９】
また、経年劣化による既設の屋根材２０のふくれやめくれ等が生じた場合に、改装用屋根材３０同士の連結部分の密着が不十分であっても、既設の屋根材２０の表面を防水層３８で覆っているので、室内へ漏水することはない。したがって、たとえ改装用屋根材３０同士の連結部分から雨水が浸入しても、防水性能を発揮できる。
さらに、固定部３６から被連結部６５に至る部分を第２部材６０Ｂとして別部材にすることにより、固定部３６から被連結部６５までの高さ寸法Ｓ２を任意に得ることができる。
つまり、下地となる既存の屋根構造に経年変化によるふくれやめくれが著しい箇所があった場合でも、請求項１から４のいずれかにおける改装用屋根材３０では連結部３２の高さ寸法Ｓ１は変化しないから、そこの部分だけ盛り上がってしまって変形してしまうおそれがある。
そこで、改装用屋根材を第１部材６０Ａと第２部材６０Ｂとで構成することにより、固定部３６から被連結部６５までの高さ寸法Ｓ２の異なる数種類の第２部材６０Ｂを製作して用意しておけば、連結部分に必要な高さ寸法に対応して、ふくれやめくれがある部分の改装用屋根材を持ち上げて取り付けることができる。
したがって、既設の屋根構造に著しいふくれやめくれがある場合でも、防水性能を発揮できる。また、別に専用の改装用屋根材を製作する必要がないので、コスト削減になる。
【００１０】
請求項２に記載された発明は、請求項１に記載の改装用屋根構造において、前記固定部３６は、貫通材３９によって前記既設の屋根構造に固定される平坦部を有することを特徴とする改装用屋根構造である。
この発明によれば、固定部３６が平坦であることにより、貫通材３９を打ち込んでも変形しないので容易に使用することができる上に、固定部３６と既設の屋根構造とを密着固定できる。また、貫通材３９を使用すれば、接着等の化学的な固定方法と比べて劣化することがないので天候の変化に十分に耐えることができ、既設の屋根構造と確実に一体化固定できる。したがって、防水性能を発揮できる。
【００１１】
請求項３に記載された発明は、請求項１または２に記載の改装用屋根構造において、前記連結部３２は、前記改装用屋根材３０の勾配方向Ｂ下端部が下向きに折り曲げられ、その下端部がさらに勾配方向上方に向かって折り曲げられて形成されていることを特徴とする改装用屋根構造である。
この発明によれば、改装用屋根材３０の勾配方向Ｂ下端部が下向きかつ勾配方向Ｂ上方に向かって折り曲げられ、断面略Ｊ字形に形成されることにより、通常雨水は勾配方向Ｂの上方から下方へ流れるため水切りの役割を果たし、改装用屋根材３０上の雨水は改装用屋根材３０同士の連結部分から内部に浸入するおそれがない。したがって、防水性能を発揮できる。
【００１２】
請求項４に記載された発明は、請求項３に記載の改装用屋根構造において、前記被連結部３５は、前記連結部３２が挿入可能でかつ勾配方向Ｂ下向きに開口を有するスリット状であることを特徴とする改装用屋根構造である。
この発明によれば、請求項３に記載された断面略Ｊ字形の連結部３２を勾配方向Ｂ下方から上方へと屋根面に沿って動かして、スリット状に形成された被連結部３５に挿入する。これによって、連結部３２の先端を被連結部３５と係合させて、改装用屋根材３０同士を密接に連結することができる。その上、被連結部３５は下向きの開口を有しているため、この改装用屋根材３０同士の連結部分から雨水が浸入するおそれがないので、防水性能を発揮できる。
【００１３】
請求項５に記載された発明は、請求項１から４のいずれかに記載の改装用屋根構造において、前記被連結部３５は、前記改装用屋根材３０の一部を切り起こすことにより形成されていることを特徴とする改装用屋根構造である。
この発明によれば、一枚の金属製板材の一部を切り起こして被連結部３５を形成することによって、この被連結部３５を別部材とするよりも容易に製作することができる。
【００２１】
請求項６に記載された発明は、請求項１から５のいずれかに記載の改装用屋根構造において、前記改装用屋根材３０は、その表裏のいずれかの面に他の面材３７が積層されていることを特徴とする改装用屋根構造である。
この発明によれば、補強材、クッション材、断熱材等の他の面材３７を積層することにより、改装用屋根材として防水性能を発揮しつつ、剛性、耐衝撃性、断熱性等の機能を付加させることができる。
【００２２】
請求項７に記載された発明は、既設の屋根構造の表面に設けられる改装用屋根構造の施工方法であって、前記既設の屋根構造の表面を防水層３８で覆った上に、当該既設の屋根構造の勾配方向Ｂ下側から上側へと複数の改装用屋根材３０を順次設置してゆくとともに、各改装用屋根材３０の勾配方向Ｂ上部を前記既設の屋根構造に固定し、この固定部分３６を覆うように、勾配方向Ｂ上側に隣接する改装用屋根材３０の勾配方向Ｂ下部を、勾配方向Ｂ下側に隣接する改装用屋根材３０の勾配方向Ｂ上部に連結して改装用屋根構造を形成する手順を備え、前記改装用屋根材としては、当該改装用屋根材の勾配方向下側に隣接する改装用屋根材の被連結部に連結する連結部と、この連結部よりも勾配方向上部に形成される固定部とを備えた第１部材と、前記被連結部と、前記第１部材の固定部と重ねて前記既設の屋根構造に固定される固定部とを備えた第２部材と、を含み、前記第１部材の連結部に、当該第１部材の勾配方向下端部を下向きに折り曲げた折曲げ片と、この折曲げ片の先端をさらに内側に折り曲げた挟持片とを形成するとともに、前記第２部材の被連結部に、前記固定部の勾配方向下端部を上向きに折り曲げた立上がり片と、この立上がり片の先端を勾配方向下方に折り曲げた支持片と、この支持片の先端を下向きに折り曲げた被挟持片とを形成しておき、前記第２部材に対して勾配方向上側に隣接する改装用屋根材の第１部材を前記支持片上に載置するとともに、前記被挟持片を前記挟持片で挟持することで、当該第２部材と当該上側の第１部材とを連結することを特徴とする改装用屋根構造の施工方法である。
【００２３】
この発明によれば、改装用屋根構造は、既設の屋根構造上にそれを覆う防水層３８が設けられ、その上に改装用屋根材３０が複数連結配置されて構成される。そして、改装用屋根材３０が固定部３６で各々固定されることにより既設の屋根構造と一体化される。その際、固定部３６がそれより勾配方向Ｂ上側に隣接する改装用屋根材３０に覆われるとともに、勾配方向Ｂ上側の改装用屋根材の連結部３２と勾配方向Ｂ下側の改装用屋根材の被連結部３５が連結され、固定部３６は浸水しないようになっている。したがって、防水性能を発揮できる。
【００２４】
また、経年劣化による既設の屋根材２０のふくれやめくれ等が生じた場合に、改装用屋根材３０同士の連結部分の密着が不十分であっても、既設の屋根材２０の表面を防水層３８で覆っているので、室内へ漏水することはない。したがって、たとえ雨水が改装用屋根材３０同士の連結部分から浸入しても、防水性能を発揮できる。
【００２５】
請求項８に記載された発明は、請求項７に記載の改装用屋根構造の施工方法において、改装用屋根材３０の表裏いずれかの面に他の面材３７を積層することを特徴とする改装用屋根構造の施工方法である。
この発明によれば、補強材、クッション材、断熱材等の他の面材３７を積層することにより、改装用屋根材として防水性能を発揮しつつ、剛性、耐衝撃性、断熱性等の機能を付加させることができる。
【００２６】
【発明の実施の形態】
以下、本発明の各実施形態を図面に基づいて説明する。なお、以下の実施形態の説明にあたって、同一構成要件については、同一符号を付し、その説明を省略もしくは簡略化する。
〔第１実施形態〕
図１には、本発明の第１実施形態における寄棟屋根１が示されている。この寄棟屋根１は、桁行方向Ｋに沿った二つの傾斜面１１および梁間方向Ｔに沿った二つの傾斜面１２を備えている。また、各々の傾斜面１１，１２の勾配方向Ｂが示されている。
【００２７】
傾斜面１１，１２は、図２および図３に示すように、既設の屋根構造が改装用屋根構造に覆われることによって構成されている。
既設の屋根構造は、図２に示すように、桁行方向Ｋまたは梁間方向Ｔに沿って勾配方向Ｂに傾斜して配置された野地板２１と、この野地板２１上に敷設された既設の防水シート２２と、この既設の防水シート２２上に配置された既設の屋根材２０（以下、スレート屋根材と呼ぶ）とを含んで構成されている。
【００２８】
スレート屋根材２０は、無機質繊維が用いられ、図３に示すように、傾斜面１１，１２上では、一文字葺きで葺かれている。すなわち、スレート屋根材２０は、傾斜面１１の桁行方向Ｋまたは傾斜面１２の梁間方向Ｔに沿って揃って並べられ、勾配方向Ｂには互い違いに重なるように配置されている。そして、勾配方向Ｂ下側に配置されたスレート屋根材２０の上端の上に、その上側に配置されたスレート屋根材２０の下端が重なった状態で、スレート屋根材２０が傾斜面１１，１２上に順次配置されている。
【００２９】
改装用屋根構造は、スレート屋根材２０を全面に亘って覆うように敷設された防水シート３８と、この防水シート３８の上に配置されてスレート屋根材２０を覆う改装用屋根材３０（以下、リフォーム屋根材と呼ぶ）と、このリフォーム屋根材３０を既設の屋根構造に固定するビス３９と含んで構成されている。
リフォーム屋根材３０は、金属製であり、各スレート屋根材２０を覆いながら、桁行方向Ｋまたは梁間方向Ｔに沿った方向に端縁同士が突き合わされて配置されている。
【００３０】
そして、リフォーム屋根材３０は、図４および図５に示すように、スレート屋根材２０の表面を覆う本体３１および本体３１の裏面に設置される断熱材３７を備えている。
さらに、この本体３１は、その勾配方向Ｂ下端部に折り曲げ形成されて勾配方向Ｂ下側に隣接するリフォーム屋根材３０と連結する連結部３２と、本体３１の勾配方向Ｂ上端部に設けられてリフォーム屋根材３０を既設の屋根構造に固定するための固定部３６と、この固定部３６に形成されて勾配方向Ｂ上側に隣接するリフォーム屋根材３０と連結する被連結部３５と、本体３１の上端部および下端部を除いたほぼ全面に亘って設けられた前記断熱材３７を設置するための断熱材取付部３３と、この断熱材取付部３３と前記固定部３６とを繋ぐ斜め片３４とを含んで構成されている。
【００３１】
ここで、リフォーム屋根材３０の本体３１は、一枚の金属製板材を折り曲げて形成されている。
連結部３２は、本体３１の勾配方向Ｂ下端部を約６０度に下向きに折り曲げることによって形成された折曲げ片３２１と、この折曲げ片３２１の先端をさらに内側に約１２０度折り曲げて本体３１と略平行になるように形成された被挟持片３２２とを含んで構成され、その形状は断面略Ｊ字形となっている。
【００３２】
また、連結部３２の折曲げ片３２１は高さ寸法Ｓ１（連結部３２の勾配方向Ｂ下側のリフォーム屋根材３０の固定部３６からの寸法）が確保され、スレート屋根材２０の上に敷設された防水シート３８上にリフォーム屋根材３０が密着して収まるようになっている。
固定部３６は、本体３１の勾配方向Ｂの上端部分近傍の平坦部であって、ビス穴３６１が等間隔に３か所設けられ、ビス取り付け位置の調整ができるように長孔形状になっている。また、固定部３６は、ビス３９がビス穴３６１を通ってスレート屋根材２０を貫通して野地板２１に固定されることによって、既設の屋根構造に密着固定されている。
【００３３】
被連結部３５は、ビス穴３６１より勾配方向Ｂ下方に等間隔に３か所設けられ、四角形の４辺のうちの３辺を固定部３６から切断して、約２０度上向きに折り曲げることにより形成された立上がり片３５１と、この立上がり片３５１の先端をさらに内側に折り曲げて本体３１と略平行になるように形成された挟持片３５２とを含んで構成されている。そして、挟持片３５２と本体３１との間に連結部３２の被挟持片３２２の厚み分の間隙を形成して下向きのスリット状の開口となることにより、被連結部３５が連結部３２を挟持するようになっている。
【００３４】
断熱材取付部３３は、スレート屋根材２０を覆うとともに、スレート屋根材２０との間に断熱材３７が設置されている。
斜め片３４は、断熱材取付部３３の勾配方向Ｂ上端から、固定部３６に向かって本体３１を斜めに折り曲げて形成され、固定部３６の勾配方向Ｂ下端と繋がっている。
【００３５】
本実施形態である改装用屋根構造の施工方法は、図４に示すように、既設の屋根構造の表面上全面に防水シート３８を張った上に、リフォーム屋根材３０をスレート屋根材２０の勾配方向Ｂ下端側から、傾斜面１１，１２の上端に向かって順次載設することにより行う。
先ず、勾配方向Ｂ上側のリフォーム屋根材３０の連結部３２を、勾配方向Ｂ下方から上方へと屋根面に沿って動かしてその勾配方向Ｂ下側に隣接するリフォーム屋根材３０のスリット状の被連結部３５に挿入し、係合させる。
【００３６】
それから、スレート屋根材２０に合わせてリフォーム屋根材３０の固定位置を決め、ビス３９でスレート屋根材２０を挟んで野地板２１に確実に固定する。この際露出するビス３９の頭部は、勾配方向Ｂ上側に隣接するリフォーム屋根材３０の連結部３２によって覆われてしまうので、外側からは視認されないようになっている。
そして、このような作業を繰り返してゆく。
【００３７】
したがって、本実施形態によれば、以下の効果がある。
改装用屋根構造は、既設の屋根構造上にそれを覆う防水シート３８が設けられ、その上にリフォーム屋根材３０が複数連結配置されて構成される。そして、リフォーム屋根材３０が固定部３６で各々固定されることにより既設の屋根構造と一体化される。その際、固定部３６がそれより勾配方向Ｂ上側に隣接するリフォーム屋根材３０に覆われるとともに、その勾配方向Ｂ上側のリフォーム屋根材３０の連結部３２と勾配方向Ｂ下側のリフォーム屋根材３０の被連結部３５とが連結される。したがって、防水性能を発揮できる。
【００３８】
また、経年劣化によるスレート屋根材２０のふくれやめくれ等が生じた場合に、リフォーム屋根材３０同士の連結部分の密着が不十分であっても、スレート屋根材２０の表面を全面に亘って防水シート３８で覆っているので、室内へ漏水することはない。したがって、たとえリフォーム屋根材３０同士の連結部分から雨水が浸入しても、防水性能を発揮できる。
【００３９】
また、リフォーム屋根材３０の勾配方向Ｂ下端部が勾配方向Ｂ上方に向かって下向きに折り曲げられ断面略Ｊ字形に形成されることにより、通常雨水は勾配方向Ｂの上方から下方へ流れるため水切りの役割を果たし、リフォーム屋根材３０上の雨水はリフォーム屋根材３０同士の連結部分から内部に浸入するおそれがない。したがって、防水性能を発揮できる。
【００４０】
また、断面略Ｊ字形の連結部３２を勾配方向Ｂ下方から上方に屋根面に沿って動かしてスリット状に形成された被連結部３５に挿入する。これによって、連結部３２の被挟持片３２２は被連結部３５の挟持片３５２に挟持され、リフォーム屋根材３０同士が密接に連結される。その上、被連結部３５は下向きの開口を有しているため、このリフォーム屋根材３０同士の連結部分から雨水が浸入するおそれがないので、防水性能を発揮できる。
【００４１】
また、固定部３６が平坦であることにより、ビス３９を打ち込んでも変形しないので容易に使用することができる上に、、固定部３６と既設の屋根構造とは密着固定される。また、ビス３９を使用すれば、接着等の化学的な固定方法と比べて劣化することがないので天候の変化に十分に耐えることができ、既設の屋根構造と確実に一体化固定される。したがって、防水性能を発揮できる。
また、断熱材３７を積層することにより、リフォーム屋根材として防水性能を発揮しつつ、断熱性能を発揮させることができる。
また、被連結部３５を一枚の金属製板材の一部を切り起こして形成することによって、折り曲げ形成よりも容易に製作することができる。
【００４２】
〔第２実施形態〕
図６には本発明の第２実施形態が示されている。
本実施形態においては、リフォーム屋根材６０は、第１部材６０Ａと、第２部材６０Ｂとの二つの部材で構成されている。
第１部材６０Ａは、本体６１Ａと、断熱材３７とを含んで構成され、本体６１Ａは、連結部６２と、断熱材取付部３３と、斜め片３４と、固定部３６とを備えている。ここで、連結部６２は、本体６１Ａの勾配方向Ｂ下端部を下向きに略直角に折り曲げて形成された折曲げ片６２１と、この折曲げ片６２１の先端をさらに内側に約１２０度折り曲げて形成された挟持片６２２とを含んで構成されている。
【００４３】
第２部材６０Ｂは、被連結部６５と固定部３６とを備えた本体６１Ｂで構成されている。被連結部６５は、本体６１Ｂの勾配方向Ｂ下端部を略直角に上向きに折り曲げて形成された立上がり片６５１と、この立上がり片６５１の先端を今度は反対側に略直角に折り曲げて勾配方向Ｂと略平行に形成された支持片６５２と、この支持片６５２の先端を約１２０度下向きに折り曲げて形成された被挟持片６５３とを含んで構成されている。
【００４４】
第１部材６０Ａの固定部３６と、第２部材６０Ｂの固定部３６とは、重ねてビス３９により固定されている。
また、勾配方向Ｂ上側の第１部材６０Ａの本体６１Ａが勾配方向Ｂ下側の第２部材６０Ｂの支持片６５２上に載置されると同時に、この第２部材６０Ｂの被挟持片６５３は前記第１部材６０Ａの本体６１Ａと挟持片６２２とによって挟持されている。この際、被挟持片６５３と挟持片６２２とは共に弾性変形し、密着している。また、第２部材６０Ｂの立上がり片６５１は高さ寸法Ｓ２が確保され、防水シート３８上にリフォーム屋根材６０が密着して収まるようになっている。
【００４５】
本実施形態である改装用屋根構造の施工方法は、第１実施形態と同様に、既設の屋根構造の表面全面に防水シート３８を張った上に、リフォーム屋根材６０をスレート屋根材２０の勾配方向Ｂ下端から、傾斜面１１，１２の上端に向かって順次敷設することにより行う。
先ず、勾配方向Ｂ上側のリフォーム屋根材６０の第１部材６０Ａの連結部６２を、勾配方向Ｂ下方から上方へと屋根面に沿って動かして、その勾配方向Ｂ下側に隣接するリフォーム屋根材６０の第２部材６０Ｂの連結部６２と係合させて密着させる。
その後、適当な高さ寸法Ｓ２を有する第２部材６０Ｂを適宜用意し、この第２部材６０Ｂの固定部３６を第１部材６０Ａの固定部３６と共にビス３９で固定する。
そして、このような作業を繰り返してゆく。
【００４６】
したがって、本実施形態によれば、以下のような効果がある。
第１実施形態では、リフォーム屋根材３０の下地となる既設の屋根構造に経年変化によるふくれやめくれが著しい箇所があった場合でも、連結部３２の折曲げ片３２１の高さ寸法Ｓ１は、断熱材取付部３３がスレート屋根材２０に密着して収まるだけの寸法であって、変更することはできないので、ふくれやめくれのある部分だけ盛り上がってしまって変形してしまうおそれがある。
【００４７】
そこで、本実施形態のように、リフォーム屋根材を第１部材６０Ａと第２部材６０Ｂとで構成して、立上がり片６５１の高さ寸法Ｓ２の異なる数種類の第２部材６０Ｂを適宜使用することで対応し、ふくれやめくれのある部分のリフォーム屋根材を持ち上げて取り付けることができる。
【００４８】
また、第２部材６０Ｂの立上がり片６５１の高さ寸法Ｓ２が異なる場合でも、第１部材６０Ａの本体６１Ａが勾配方向Ｂ下側の第２部材６０Ｂの支持片６５２上に載置されるとともに、この第２部材の被挟持片６５３は前記第１部材６０Ａの本体６１Ａと挟持片６２２とによって挟持されるという関係は変わらない。したがって、第１部材６０Ａと第２部材６０Ｂとは密接に係合され、防水性能は確保される。
また、この際、被挟持片６５３と挟持片６２２とは共に弾性変形して密着しているので、第１部材と第２部材との高さ方向のずれが多少生じた場合でも、ずれを吸収できる。
また、立上がり片６５１の高さ寸法Ｓ２を自由に設定しても、第２部材６０Ｂは固定部３６と被連結部６５のみで構成されているので容易に製作でき、専用のリフォーム屋根材を別に製作する場合に比べ、コスト削減になる。
【００４９】
〔第３実施形態〕
図７には本発明の第３実施形態が示されている。
本実施形態においては、リフォーム屋根材７０は、第３部材７０Ａと、第４部材７０Ｂとの二つの部材で構成されている。
なお、第３部材７０Ａと第４部材７０Ｂとは、各々被連結部７５Ａと被連結部７５Ｂとを含んで構成されているが、これら被連結部７５Ａと被連結部７５Ｂとが重ねて取り付けられることによって、一体となって被連結部７５を構成している。
【００５０】
第３部材７０Ａは、本体７１Ａと、断熱材３７とを含んで構成され、本体７１Ａは、連結部７２と、断熱材取付部３３と、被連結部７５Ａとを備えている。
ここで、連結部７２は、本体６１Ａの勾配方向Ｂ下端部を下向きに略直角に折り曲げて形成された折曲げ片７２１と、この折曲げ片７２１の先端をさらに内側に略直角に折り曲げて形成された挟持片７２２とを含んで構成されている。
被連結部７５Ａは、本体７１Ａの勾配方向Ｂ下端部を略直角に上向きに折り曲げて形成された立上がり片７５１と、この立上がり片７５１の先端を今度は反対側に略直角に折り曲げて勾配方向Ｂと略平行に形成された支持片７５２と、この支持片７５２の先端を略直角に下向きに折り曲げて形成された被挟持片７５３とを含んで構成されている。
【００５１】
第４部材７０Ｂは、被連結部７５Ｂと固定部３６とを備えた本体７１Ｂで構成されている。被連結部７５Ｂは、被連結部７５Ａと同じ構成であるが、立上がり片７５１の高さ寸法は被連結部７５Ｂの方が長くなっている。
そして、勾配方向Ｂ上側の第３部材７０Ａの本体７１Ａが、勾配方向Ｂ下側の第３部材７０Ａおよび第４部材７０Ｂの支持片７５２上に載置される。と同時に、この第３部材７０Ａおよび第４部材７０Ｂの被挟持片７５３は、第３部材７０Ａの本体７１Ａと挟持片７２２とによって挟持されている。
また、第４部材７０Ｂの立上がり片７５１は高さ寸法Ｓ３が確保され、防水シート３８上にリフォーム屋根材７０が密着して収まるようになっている。
【００５２】
本実施形態である改装用屋根構造の施工方法は、第１実施形態と同様に、既設の屋根構造の表面全面に防水シート３８を張った上に、リフォーム屋根材７０を、スレート屋根材２０の勾配方向Ｂ下端から、傾斜面１１，１２の上端に向かって順次敷設することにより行う。
先ず、勾配方向Ｂ上側に隣接するリフォーム屋根材７０の第３部材７０Ａの連結部７２を、勾配方向Ｂ下方から上方へと屋根面に沿って動かして、その勾配方向Ｂ下側に隣接するリフォーム屋根材７０の第４部材７０Ｂの被連結部７５と係合させて密着させる。
【００５３】
この際、前記勾配方向Ｂ上側の連結部７２を前記勾配方向Ｂ下側の第４部材７０Ｂに載置すると同時に、前記勾配方向Ｂ下側の第３部材７０Ａを前記勾配方向Ｂ上側の連結部３２に係止する。
その後、適当な高さ寸法Ｓ３を有する第４部材７０Ｂを適宜用意し、前記第３部材７０Ａに合わせて位置決めしてビス３９で固定する。
そして、このような作業を繰り返してゆく。
【００５４】
したがって、本実施形態によれば、以下の効果がある。
第１実施形態では、リフォーム屋根材３０の下地材となる既設の屋根構造に経年変化によるふくれやめくれが著しい箇所があった場合でも、連結部３２の折曲げ片３２１の高さ寸法Ｓ１は、断熱材取付部３３がスレート屋根材２０に密着して収まるだけの寸法であって、変更することができないので、ふくれやめくれのある部分だけ盛り上がってしまって変形してしまうおそれがある。
【００５５】
そこで、本実施形態のように、リフォーム屋根材を第３部材７０Ａと第４部材７０Ｂとで構成し、立ち上がり片７５１の高さ寸法Ｓ３の異なる数種類の第４部材７０Ｂを適宜使用することで対応し、ふくれやめくれがある部分のリフォーム屋根材を持ち上げて取り付けることができる。
【００５６】
また、第４部材７０Ｂの立上がり片７５１の高さ寸法Ｓ３が異なる場合でも、第３部材７０Ａの本体７１Ａが勾配方向下側の第４部材７０Ｂの支持片７５２上に載置されるとともに、この第４部材７０Ｂの被挟持片７５３は前記第３部材７０Ａの本体７１Ａと挟持片７２２とによって挟持されるという関係は変わらない。したがって、第３部材７０Ａと第４部材７０Ｂとは密接に係合され、防水性能は確保される。
また、立上がり片７５１の高さ寸法Ｓ３を自由に設定しても、第４部材７０Ｂは固定部３６と被連結部７５Ｂのみで構成されているので容易に製作でき、専用のリフォーム屋根材を別に製作する場合に比べ、コスト削減になる。
【００５７】
また、第２実施形態の場合は、断熱材取付部３３と固定部３６が一体化しているために、第１部材６０Ａに備えられた固定部３６の高さ寸法を調整することはできないから、リフォーム屋根材６０の勾配方向Ｂ上部を上方に持ち上げて取り付けることはできないが、本実施形態では、断熱材取付部３３と固定部３６が別部材なので、リフォーム屋根材７０全体を上方に持ち上げて取り付けることが出来る。つまり、ふくれやめくれが固定部３６の近傍にある場合でも、第２実施形態の場合は対応できないが、本実施形態の場合は対応できる。
【００５８】
なお、本発明は前述の実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
たとえば、各実施形態では、面材として断熱材３７を用いたが、補強材、クッション材等を用いてもよい。
また、各実施形態では、貫通材としてビス３９を用いたが、釘等を用いてもよい。
【００５９】
【発明の効果】
本発明である改装用屋根構造によれば、以下の効果を奏することができる。
請求項１に記載の発明によれば、改装用屋根材が固定部で各々固定されることにより既設の屋根構造と一体化されるとともに、固定部がそれより勾配方向上側に隣接する改装用屋根材に覆われつつ、その勾配方向上側の改装用屋根材の連結部と勾配方向下側の改装用屋根材の被連結部とが連結され、固定部は浸水しないようになっている。したがって、防水性能を発揮できる。
また、経年劣化による既存の屋根材のふくらみやめくれ等が生じた場合に、改装用屋根材同士の連結部分の密着が不十分であっても、既設の屋根材の表面を防水層で覆っているので室内へ漏水することはなく、防水性能を発揮できる。
【図面の簡単な説明】
【図１】本発明の第１実施形態における寄棟屋根を示す斜視図である。
【図２】本発明の第１実施形態における改装用屋根材としてのリフォーム屋根材の納まりを示す断面図である。
【図３】第１実施形態におけるリフォーム屋根材の配置を示す斜視図である。
【図４】第１実施形態におけるリフォーム屋根材を示す拡大断面図である。
【図５】第１実施形態におけるリフォーム屋根材を示す斜視図である。
【図６】本発明の第２実施形態におけるリフォーム屋根材の納まりを示す断面図である。
【図７】本発明の第３実施形態におけるリフォーム屋根材の納まりを示す断面図である。
【符号の説明】
１寄棟屋根
２０既設の屋根材としてのスレート屋根材
３０，６０，７０改装用屋根材としてのリフォーム屋根材
３１，６１Ａ，６１Ｂ，７１Ａ，７１Ｂ本体
３２，６２，７２連結部
３３断熱材取付部
３４斜め片
３５，６５，７５，７５Ａ，７５Ｂ被連結部
３６固定部
３７面材としての断熱材
３８防水層としての防水シート
３９貫通材としてのビス
６０Ａ第１部材
６０Ｂ第２部材
７０Ａ第３部材
７０Ｂ第４部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roof structure for refurbishment provided on the surface of a roof material and a method for constructing the roof structure.
[0002]
[Background]
Conventionally, many roofs of buildings have roof materials such as tiles stacked in a gradient direction on the roof surface. In order to replace a roof made with such a roof material, it is necessary to peel all the roof material and replace it with a new roof material, but this takes time and effort to peel off the roof material, and the building is used. However, it was difficult to change.
Therefore, in recent years, roofs for renovation are attached to the surface of an existing roof structure, and the roof is replaced by covering the existing roof structure. (See Japanese Patent Publication No. 3-54227, Japanese Patent Application No. 11-247628, etc.).
[0003]
Among these, in the structure disclosed in Japanese Patent Publication No. 3-54227, a plurality of roof materials for renovation are arranged on the existing roof structure, and the upper part in the gradient direction of each of the roof materials for renovation is the existing roof. The connecting portion of the lower end of the roofing material for refurbishment that is fixed to the structure and is adjacent to the upper side of the gradient direction covers the fixed portion of the roofing material for renovation that is adjacent to the lower side of the gradient direction and is provided in the vicinity of the fixed portion. The structure is engaged with the connecting portion.
Accordingly, the connecting portions of the respective refurbished roofing materials are integrated by being closely connected, and the waterproof performance of the roof is exhibited.
[0004]
Further, in the structure disclosed in Japanese Patent Application No. 11-247628, a plurality of roof materials for refurbishment are arranged on the existing roof structure, and each of the roof materials for refurbishment has an existing roof material at the upper end in the gradient direction. The structure is sandwiched between them and fixed to the existing roof structure, and the lower end portion in the gradient direction is engaged with the existing roof material.
Therefore, the refurbished roofing material is closely connected to each other by engaging the lower end of the gradient roof material with the existing roofing material and sandwiching the upper end of the gradient direction between the existing roofing materials. The roof waterproof performance is demonstrated.
[0005]
[Problems to be solved by the invention]
However, in the configuration disclosed in Japanese Patent Publication No. 3-54227, Japanese Patent Application No. 11-247628, etc., when the existing roof material is blistered or turned up due to deterioration over time, the roof materials for renovation are in close contact with each other. There was a risk that the waterproof performance would be lowered.
[0006]
An object of the present invention is to provide a refurbished roof structure that exhibits waterproof performance even when there is a problem with an existing roof structure, and a method for constructing the roof structure.
[0007]
[Means for Solving the Problems]
 The present invention will be described with reference to the drawings.
 The invention described in claim 1 is a refurbished roof structure provided on the surface of an existing roof structure, and a waterproof layer 38 covering the surface of the existing roof structure, and a joint arrangement on the waterproof layer 38 A plurality of refurbished roofing materials 30, and the refurbished roofing material 30 is formed on an upper portion in the gradient direction B of the renovating roofing material 30 and fixed to the existing roof structure, The to-be-connected portion 35 formed below the fixing portion 36 in the gradient direction B, and the refurbishment that is formed in the lower portion of the renovation roof material 30 in the gradient direction B and adjacent to the lower side of the refurbishment roof material 30 in the gradient direction B Connected to the connected portion 35 of the roofing material 30DoAnd a connecting portion 32And includes a first member extending from the connecting portion to the fixed portion and a second member extending from the fixed portion to the connected portion. The first member includes the connecting portion and the connecting portion. A fixed portion formed at an upper portion in the gradient direction than the portion, and the connecting portion includes a bent piece formed by bending the lower end portion in the gradient direction of the first member downward, and a tip of the bent piece. Further, the second member is fixed to the existing roof structure so as to overlap the connected portion and the fixing portion of the first member. The connected portion includes a rising piece formed by bending the lower end portion in the gradient direction of the fixed portion upward, a support piece formed by bending the tip of the rising piece downward in the gradient direction, Formed by bending the tip of the support piece downward The first member of the roofing material for refurbishment that is adjacent to the upper side in the gradient direction with respect to the second member is placed on the support piece, and the sandwiched piece is sandwiched by the sandwiching piece. By doing so, the second member and the upper first member are connected.It is a roof structure for renovation characterized by that.
[0008]
According to the present invention, the roof structure for refurbishment is configured by providing a waterproof layer 38 covering the existing roof structure and connecting and arranging a plurality of roof materials 30 for refurbishment thereon. And the roof material 30 for renovation is each fixed by the fixing | fixed part 36, and is integrated with the existing roof structure. At that time, the fixing portion 36 is covered with the refurbishment roof material 30 adjacent to the upper side of the gradient direction B, and the connecting portion 32 of the refurbishment roof material 30 on the upper side of the gradient direction B and the refurbishment for the lower side of the gradient direction B. The connected portion 35 of the roof material is connected, and the fixed portion 36 is not flooded. Therefore, waterproof performance can be exhibited.
[0009]
 In addition, when the existing roofing material 20 is blistered or turned up due to deterioration over time, the surface of the existing roofing material 20 is waterproofed even if the connection between the refurbishing roofing materials 30 is insufficient. Since it is covered with 38, water does not leak into the room. Therefore, even if rainwater enters from the connecting part between the roof materials 30 for refurbishment, waterproof performance can be exhibited.
 Furthermore, the height dimension S2 from the fixed part 36 to the to-be-connected part 65 can be arbitrarily obtained by making the part from the fixing | fixed part 36 to the to-be-connected part 65 into another member as the 2nd member 60B.
 That is, even when the existing roof structure as a base has a portion that is significantly blistered or turned up due to secular change, the height dimension S1 of the connecting portion 32 changes in the refurbished roofing material 30 according to any one of claims 1 to 4. Because there is no, there is a possibility that only that portion rises and deforms.
 Therefore, by constructing the roof material for renovation with the first member 60A and the second member 60B, several types of second members 60B having different height dimensions S2 from the fixed portion 36 to the connected portion 65 are prepared and prepared. By doing so, it is possible to lift and install the roofing material for refurbishment in the part having the blisters and turns according to the height dimension required for the connecting part.
 Therefore, even when the existing roof structure has significant blisters and turns, the waterproof performance can be exhibited. In addition, it is not necessary to manufacture a separate roof material for renovation, so the cost is reduced.
[0010]
According to a second aspect of the present invention, in the refurbished roof structure according to the first aspect, the fixing portion 36 has a flat portion fixed to the existing roof structure by a penetrating material 39. It is a roof structure for renovation.
According to the present invention, since the fixing portion 36 is flat, it can be used easily because it does not deform even when the penetrating member 39 is driven, and the fixing portion 36 and the existing roof structure can be closely fixed. Further, if the penetrating member 39 is used, it does not deteriorate as compared with a chemical fixing method such as adhesion, so that it can sufficiently withstand changes in weather, and can be reliably fixed integrally with an existing roof structure. Therefore, waterproof performance can be exhibited.
[0011]
 The invention described in claim 3 is the roof structure for refurbishment according to claim 1 or 2, wherein the connecting portion 32 is a lower end portion in the gradient direction B of the roof material 30 for refurbishment.ButFolded downward,The lower end is further bent upward in the gradient directionIt is a roof structure for renovation characterized by being formed.
 According to the present invention, the lower end of the gradient direction B of the roofing material 30 for refurbishment isDown andHeading upward in gradient direction BFoldBy being bent and formed in a substantially J-shaped cross section, rainwater normally flows from the upper side to the lower side in the gradient direction B, so that it plays a role of draining water. There is no risk of intrusion from the connecting part. Therefore, waterproof performance can be exhibited.
[0012]
According to a fourth aspect of the present invention, in the refurbished roof structure according to the third aspect, the connected portion 35 has a slit shape into which the connecting portion 32 can be inserted and has an opening downward in the gradient direction B. It is a roof structure for renovation characterized by this.
According to this invention, the connecting portion 32 having a substantially J-shaped cross section described in claim 3 is moved along the roof surface from the lower side to the upper side in the gradient direction B, and is inserted into the connected portion 35 formed in a slit shape. To do. Thereby, the tip of the connection part 32 can be engaged with the to-be-connected part 35, and the roof materials 30 for remodeling can be closely connected. In addition, since the connected portion 35 has a downward opening, there is no possibility of rainwater entering from the connecting portion between the refurbished roof materials 30, so that waterproof performance can be exhibited.
[0013]
According to a fifth aspect of the present invention, in the refurbished roof structure according to any one of the first to fourth aspects, the connected portion 35 is formed by cutting a part of the refurbished roof material 30. It is a roof structure for renovation characterized by
According to the present invention, by cutting and raising a part of one metal plate material to form the coupled portion 35, the coupled portion 35 can be manufactured more easily than using a separate member.
[0021]
 Claim6The invention described in claim 1 is from5In the roof structure for refurbishment according to any one of the above, the roof material for refurbishment 30 is a roof structure for refurbishment characterized in that another face material 37 is laminated on either surface of the front and back.
 According to the present invention, by laminating other face materials 37 such as a reinforcing material, a cushion material, and a heat insulating material, functions such as rigidity, impact resistance, and heat insulating properties are exhibited while exhibiting waterproof performance as a roofing material for renovation. Can be added.
[0022]
 Claim7The invention described in 1 is a method for constructing a refurbished roof structure provided on the surface of an existing roof structure, wherein the surface of the existing roof structure is covered with a waterproof layer 38, and A plurality of refurbishment roof materials 30 are sequentially installed from the lower side of the gradient direction B to the upper side, and the upper part of the gradient direction B of each refurbishment roof material 30 is fixed to the existing roof structure. A refurbishment roof structure is formed by connecting the lower part of the refurbishment roof material 30 adjacent to the upper side of the gradient direction B to the upper part of the renewal roof material 30 adjacent to the lower side of the gradient direction B so as to cover the cover. FormThe roof material for refurbishment is provided with a connecting portion connected to a connected portion of the roof material for refurbishment adjacent to the lower side in the gradient direction of the roof material for refurbishment, and the upper portion in the gradient direction than the connecting portion. A first member provided with a fixed part, a second member provided with the connected part, and a fixed part that is overlapped with the fixed part of the first member and fixed to the existing roof structure. Including a bent piece formed by bending the lower end portion in the gradient direction of the first member downward and a sandwich piece obtained by bending the tip of the bent piece further inward at the connecting portion of the first member, A rising piece in which the lower end portion in the gradient direction of the fixed portion is bent upward, a support piece in which the tip of the rising piece is bent downward in the gradient direction, and the tip of the support piece are directed downward. A clamped piece that is bent into the second part, The first member of the roof material for refurbishment that is adjacent to the upper side in the gradient direction is placed on the support piece, and the sandwiched piece is sandwiched by the sandwiching piece, so that the second member and the upper first Connecting one memberIt is the construction method of the roof structure for renovation characterized by the above-mentioned.
[0023]
According to the present invention, the roof structure for refurbishment is configured by providing a waterproof layer 38 covering the existing roof structure and connecting and arranging a plurality of roof materials 30 for refurbishment thereon. And the roof material 30 for renovation is each fixed by the fixing | fixed part 36, and is integrated with the existing roof structure. At that time, the fixing portion 36 is covered with the refurbishing roof material 30 adjacent to the upper side in the gradient direction B, and the connecting portion 32 of the refurbished roof material on the upper side in the gradient direction B and the refurbished roof material on the lower side in the gradient direction B. The to-be-connected portion 35 is connected, and the fixed portion 36 is not submerged. Therefore, waterproof performance can be exhibited.
[0024]
In addition, when the existing roofing material 20 is blistered or turned up due to deterioration over time, the surface of the existing roofing material 20 is waterproofed even if the connection between the refurbishing roofing materials 30 is insufficient. Since it is covered with 38, water does not leak into the room. Therefore, even if rainwater enters from the connecting portion between the refurbishing roof materials 30, the waterproof performance can be exhibited.
[0025]
 Claim8The invention described in claim 17In the construction method of the roof structure for refurbishment described in the above, the other roof material 37 is laminated on either the front or back surface of the roof material 30 for refurbishment.
 According to the present invention, by laminating other face materials 37 such as a reinforcing material, a cushion material, and a heat insulating material, functions such as rigidity, impact resistance, and heat insulating properties are exhibited while exhibiting waterproof performance as a roofing material for renovation. Can be added.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[First Embodiment]
FIG. 1 shows a dormitory roof 1 according to the first embodiment of the present invention. The dormitory roof 1 includes two inclined surfaces 11 along the crossing direction K and two inclined surfaces 12 along the beam-to-beam direction T. Moreover, the gradient direction B of each inclined surface 11 and 12 is shown.
[0027]
As shown in FIGS. 2 and 3, the inclined surfaces 11 and 12 are configured by covering an existing roof structure with a roof structure for renovation.
As shown in FIG. 2, the existing roof structure includes a field plate 21 that is inclined in the gradient direction B along the crossing direction K or the beam-to-beam direction T, and an existing waterproof structure laid on the field plate 21. The sheet 22 is configured to include an existing roof material 20 (hereinafter referred to as a slate roof material) disposed on the existing waterproof sheet 22.
[0028]
The slate roofing material 20 is made of inorganic fibers, and as shown in FIG. That is, the slate roofing materials 20 are arranged in line along the crossing direction K of the inclined surface 11 or the beam-to-beam direction T of the inclined surface 12, and are arranged so as to alternately overlap in the gradient direction B. And in the state where the lower end of the slate roofing material 20 arranged on the upper side of the slate roofing material 20 arranged on the lower side of the gradient direction B overlaps the slate roofing material 20 on the inclined surfaces 11 and 12. Are arranged sequentially.
[0029]
The roof structure for renovation includes a waterproof sheet 38 laid so as to cover the slate roof material 20 over the entire surface, and a refurbishment roof material 30 (hereinafter referred to as the roof sheet 30 for covering the slate roof material 20 disposed on the waterproof sheet 38). And a screw 39 for fixing the renovated roof material 30 to the existing roof structure.
The renovated roofing material 30 is made of metal, and is arranged with its end edges butted in a direction along the crossing direction K or the beam-to-beam direction T while covering each slate roofing material 20.
[0030]
And the renovation roofing material 30 is equipped with the heat insulating material 37 installed in the back surface of the main body 31 and the main body 31 which cover the surface of the slate roofing material 20, as shown in FIG. 4 and FIG.
Further, the main body 31 is provided at the upper end of the gradient direction B of the main body 31 and the connecting portion 32 that is bent at the lower end of the gradient direction B and is connected to the renovated roofing material 30 adjacent to the lower side of the gradient direction B. A fixing portion 36 for fixing the renovation roof material 30 to the existing roof structure, a connected portion 35 formed on the fixing portion 36 and connected to the renovation roof material 30 adjacent to the upper side in the gradient direction B, and A heat insulating material mounting portion 33 for installing the heat insulating material 37 provided over substantially the entire surface excluding the upper end portion and the lower end portion; and an oblique piece 34 connecting the heat insulating material mounting portion 33 and the fixing portion 36; It is comprised including.
[0031]
Here, the main body 31 of the renovated roof material 30 is formed by bending a single metal plate.
The connecting portion 32 is a bent piece 321 formed by bending the lower end of the gradient direction B of the main body 31 downward by about 60 degrees, and the front end of the bent piece 321 is further bent inward by about 120 degrees to the main body 31. And a sandwiched piece 322 formed so as to be substantially parallel to each other, and the shape thereof is substantially J-shaped in cross section.
[0032]
Further, the bent piece 321 of the connecting portion 32 has a height dimension S1 (a dimension from the fixed portion 36 of the renovated roofing material 30 on the lower side in the gradient direction B of the connecting portion 32) and is laid on the slate roofing material 20. The renovated roof material 30 is placed in close contact with the waterproof sheet 38 formed.
The fixing portion 36 is a flat portion in the vicinity of the upper end portion in the gradient direction B of the main body 31, and has three screw holes 361 provided at equal intervals, and has a long hole shape so that the screw mounting position can be adjusted. Yes. Further, the fixing portion 36 is closely fixed to the existing roof structure by the screws 39 passing through the screw holes 361 and passing through the slate roofing material 20 and being fixed to the base plate 21.
[0033]
The to-be-connected portions 35 are provided at three equal intervals below the screw holes 361 in the gradient direction B, by cutting three sides of the four sides of the quadrilateral from the fixing portion 36 and bending them upward by about 20 degrees. The rising piece 351 is formed, and the holding piece 352 is formed so that the tip of the rising piece 351 is further bent inward to be substantially parallel to the main body 31. Then, a gap corresponding to the thickness of the sandwiched piece 322 of the coupling portion 32 is formed between the sandwiching piece 352 and the main body 31 to form a downward slit-like opening, whereby the coupled portion 35 sandwiches the coupling portion 32. It is supposed to be.
[0034]
The heat insulating material mounting portion 33 covers the slate roof material 20, and a heat insulating material 37 is installed between the heat insulating material mounting portion 33 and the slate roof material 20.
The oblique piece 34 is formed by bending the main body 31 obliquely from the upper end in the gradient direction B of the heat insulating material mounting portion 33 toward the fixed portion 36, and is connected to the lower end in the gradient direction B of the fixed portion 36.
[0035]
As shown in FIG. 4, the method for constructing the refurbished roof structure according to the present embodiment has a waterproof sheet 38 stretched over the entire surface of the existing roof structure, and the renovated roof material 30 is sloped with the slate roof material 20. This is performed by sequentially mounting from the lower end side in the direction B toward the upper end of the inclined surfaces 11 and 12.
First, the connecting portion 32 of the reform roof material 30 on the upper side in the gradient direction B is moved along the roof surface from the lower side of the gradient direction B to the upper side, and the slit-shaped covering of the reform roof material 30 adjacent to the lower side in the gradient direction B is moved. It inserts in the connection part 35 and makes it engage.
[0036]
Then, the fixing position of the renovated roofing material 30 is determined according to the slate roofing material 20, and the slate roofing material 20 is sandwiched with the screws 39 and securely fixed to the base plate 21. The head of the screw 39 exposed at this time is covered with the connecting portion 32 of the reformed roofing material 30 adjacent to the upper side in the gradient direction B, so that it is not visible from the outside.
And we repeat such a work.
[0037]
Therefore, according to this embodiment, there are the following effects.
The roof structure for refurbishment is configured by providing a waterproof sheet 38 covering the existing roof structure, and a plurality of renovated roof materials 30 connected and arranged thereon. And the renovation roof material 30 is each fixed by the fixing | fixed part 36, and is integrated with the existing roof structure. At that time, the fixed portion 36 is covered with the renovation roof material 30 adjacent to the upper side in the gradient direction B, and the connecting portion 32 of the reform roof material 30 on the upper side in the gradient direction B and the reform roof material 30 on the lower side in the gradient direction B. To-be-connected part 35 is connected. Therefore, waterproof performance can be exhibited.
[0038]
In addition, when the slate roofing material 20 is blistered or turned up due to deterioration over time, the surface of the slate roofing material 20 is waterproofed over the entire surface even if the connecting portions of the renovation roofing materials 30 are not sufficiently adhered. Since it is covered with the sheet 38, water does not leak into the room. Therefore, even if rainwater enters from the connecting portion between the renovated roofing materials 30, waterproof performance can be exhibited.
[0039]
Moreover, since the lower end part of the gradient direction B of the renovated roof material 30 is bent downwardly upward in the gradient direction B and formed into a substantially J-shaped cross section, rainwater normally flows from the upper side to the lower direction of the gradient direction B. It plays a role, and there is no possibility that rain water on the renovated roofing material 30 enters the interior from the connecting portion between the renovated roofing materials 30. Therefore, waterproof performance can be exhibited.
[0040]
Further, the connecting portion 32 having a substantially J-shaped cross section is moved from the lower side to the upper side in the gradient direction B along the roof surface and inserted into the connected portion 35 formed in a slit shape. Accordingly, the sandwiched piece 322 of the coupling portion 32 is sandwiched by the sandwiching piece 352 of the coupled portion 35, and the renovated roofing materials 30 are closely coupled to each other. In addition, since the connected portion 35 has a downward opening, there is no possibility of rainwater entering from the connecting portion between the renovated roofing materials 30, so that waterproof performance can be exhibited.
[0041]
Further, since the fixing portion 36 is flat, it can be easily used because it is not deformed even if the screw 39 is driven, and the fixing portion 36 and the existing roof structure are firmly fixed. Further, if the screw 39 is used, it does not deteriorate as compared with a chemical fixing method such as adhesion, so that it can sufficiently withstand changes in weather, and is securely fixed integrally with an existing roof structure. Therefore, waterproof performance can be exhibited.
Moreover, by laminating the heat insulating material 37, the heat insulating performance can be exhibited while exhibiting waterproof performance as a renovated roofing material.
Further, by forming the coupled portion 35 by cutting and raising a part of one metal plate material, it can be manufactured more easily than bending.
[0042]
[Second Embodiment]
FIG. 6 shows a second embodiment of the present invention.
In the present embodiment, the renovated roofing material 60 is composed of two members, a first member 60A and a second member 60B.
60 A of 1st members are comprised including the main body 61A and the heat insulating material 37, and the main body 61A is provided with the connection part 62, the heat insulating material attachment part 33, the diagonal piece 34, and the fixing | fixed part 36. FIG. Here, the connecting portion 62 is formed by bending the lower end portion of the main body 61A in the gradient direction B downward at a substantially right angle and bending the leading end of the bent piece 621 further inward by about 120 degrees. It is comprised including the clamped piece 622 made.
[0043]
The second member 60 B is configured by a main body 61 B provided with a connected portion 65 and a fixing portion 36. The connected portion 65 includes a rising piece 651 formed by bending the lower end portion of the gradient direction B of the main body 61B upward at a substantially right angle, and the tip of the rising piece 651 is bent at a substantially right angle to the opposite side this time. And a support piece 652 formed substantially in parallel with the support piece 652 and a sandwiched piece 653 formed by bending the tip of the support piece 652 downward by about 120 degrees.
[0044]
The fixing portion 36 of the first member 60A and the fixing portion 36 of the second member 60B are overlapped and fixed by screws 39.
The main body 61A of the first member 60A on the upper side in the gradient direction B is placed on the support piece 652 of the second member 60B on the lower side in the gradient direction B. At the same time, the sandwiched piece 653 of the second member 60B is The first member 60A is sandwiched between the main body 61A and the sandwiching piece 622. At this time, the sandwiched piece 653 and the sandwiching piece 622 are both elastically deformed and are in close contact with each other. Further, the rising piece 651 of the second member 60B has a height dimension S2, and the renovated roofing material 60 is placed in close contact with the waterproof sheet 38.
[0045]
In the construction method of the roof structure for renovation according to this embodiment, the waterproof roof sheet 38 is stretched over the entire surface of the existing roof structure and the renovated roof material 60 is sloped with the slate roof material 20 as in the first embodiment. This is done by sequentially laying from the lower end of the direction B toward the upper ends of the inclined surfaces 11 and 12.
First, the connecting portion 62 of the first member 60A of the renovation roof material 60 on the upper side in the gradient direction B is moved along the roof surface from the lower side to the upper direction in the gradient direction B, and the renovation roof material adjacent to the lower side in the gradient direction B. The second member 60 B of the 60 is engaged with and closely attached to the connecting portion 62.
Thereafter, a second member 60B having an appropriate height dimension S2 is appropriately prepared, and the fixing portion 36 of the second member 60B is fixed with the screw 39 together with the fixing portion 36 of the first member 60A.
And we repeat such a work.
[0046]
Therefore, according to this embodiment, there are the following effects.
In the first embodiment, the height dimension S1 of the bent piece 321 of the connecting portion 32 is adiabatic even when the existing roof structure serving as the foundation of the renovated roof material 30 has a location where blistering or turning is remarkable due to secular change. Since the size of the material mounting portion 33 is such that it fits in close contact with the slate roofing material 20 and cannot be changed, there is a risk that only the portion with blisters or turns will rise and be deformed.
[0047]
Therefore, as in the present embodiment, the renovation roofing material is composed of the first member 60A and the second member 60B, and several types of second members 60B having different height dimensions S2 of the rising pieces 651 are appropriately used. Correspondingly, it is possible to lift and attach the renovated roofing material in the part with blisters and turns.
[0048]
Moreover, even when the height dimension S2 of the rising piece 651 of the second member 60B is different, the main body 61A of the first member 60A is placed on the support piece 652 of the second member 60B on the lower side in the gradient direction B, and The relationship that the sandwiched piece 653 of the second member is sandwiched between the main body 61A and the sandwiching piece 622 of the first member 60A does not change. Therefore, the first member 60A and the second member 60B are closely engaged, and waterproof performance is ensured.
Further, at this time, since the sandwiched piece 653 and the sandwiching piece 622 are both elastically deformed and are in close contact with each other, even if a slight displacement in the height direction between the first member and the second member occurs, the displacement is absorbed. it can.
Moreover, even if the height dimension S2 of the rising piece 651 is freely set, the second member 60B can be easily manufactured because it is composed of only the fixed portion 36 and the connected portion 65, and a dedicated renovated roofing material is separately provided. Compared to manufacturing, the cost is reduced.
[0049]
[Third Embodiment]
FIG. 7 shows a third embodiment of the present invention.
In the present embodiment, the renovation roofing material 70 is composed of two members, a third member 70A and a fourth member 70B.
The third member 70A and the fourth member 70B are configured to include a connected portion 75A and a connected portion 75B, respectively, but the connected portion 75A and the connected portion 75B are attached in an overlapping manner. Thus, the coupled portion 75 is integrally formed.
[0050]
70 A of 3rd members are comprised including the main body 71A and the heat insulating material 37, and the main body 71A is provided with the connection part 72, the heat insulating material attachment part 33, and the to-be-connected part 75A.
Here, the connecting portion 72 is formed by bending a lower end portion of the main body 61A in the gradient direction B downward at a substantially right angle and bending the distal end of the bent piece 721 further inward at a substantially right angle. The sandwiching piece 722 is configured.
The connected portion 75A has a rising piece 751 formed by bending the lower end of the gradient direction B of the main body 71A upward substantially at a right angle, and the tip of the rising piece 751 is bent at a substantially right angle to the opposite side this time. And a support piece 752 formed substantially in parallel with the support piece 752 and a sandwiched piece 753 formed by bending the tip of the support piece 752 downward at a substantially right angle.
[0051]
The fourth member 70 B is configured by a main body 71 B provided with a connected portion 75 B and a fixed portion 36. The connected portion 75B has the same configuration as the connected portion 75A, but the height of the rising piece 751 is longer in the connected portion 75B.
Then, the main body 71A of the third member 70A on the upper side in the gradient direction B is placed on the support pieces 752 of the third member 70A on the lower side in the gradient direction B and the fourth member 70B. At the same time, the sandwiched piece 753 of the third member 70A and the fourth member 70B is sandwiched between the main body 71A and the sandwiching piece 722 of the third member 70A.
Further, the rising piece 751 of the fourth member 70B has a height dimension S3 so that the renovated roofing material 70 is placed in close contact with the waterproof sheet 38.
[0052]
The construction method of the roof structure for renovation which is this embodiment is the same as that in the first embodiment, in which the waterproof roof sheet 38 is stretched over the entire surface of the existing roof structure, and the renovation roof material 70 is replaced with the slate roof material 20. This is done by sequentially laying from the lower end of the gradient direction B toward the upper ends of the inclined surfaces 11 and 12.
First, the connecting portion 72 of the third member 70A of the reform roof material 70 adjacent to the upper side in the gradient direction B is moved along the roof surface from the lower side to the upper direction in the gradient direction B, and the reform is adjacent to the lower side in the gradient direction B. The fourth member 70 B of the roof material 70 is engaged with and closely contacted with the connected portion 75.
[0053]
At this time, the connecting portion 72 on the upper side in the gradient direction B is placed on the fourth member 70B on the lower side in the gradient direction B, and at the same time, the third member 70A on the lower side in the gradient direction B is connected to the connecting portion on the upper side in the gradient direction B. 32.
Thereafter, a fourth member 70B having an appropriate height dimension S3 is prepared as appropriate, positioned in accordance with the third member 70A, and fixed with screws 39.
And we repeat such a work.
[0054]
Therefore, according to this embodiment, there are the following effects.
In the first embodiment, the height dimension S1 of the bent piece 321 of the connecting portion 32 is, even when the existing roof structure, which is the base material of the renovated roof material 30, has a location where blistering or turning due to secular change is significant, Since the size of the heat insulating material mounting part 33 is just enough to fit into the slate roofing material 20 and cannot be changed, only the part with blistering or turning up may be raised and deformed.
[0055]
Therefore, as in the present embodiment, the renovation roofing material is configured by the third member 70A and the fourth member 70B, and several types of fourth members 70B having different height dimensions S3 of the rising pieces 751 are used as appropriate. And it is possible to lift and attach the renovated roofing material where there are blisters and turns.
[0056]
Even when the height dimension S3 of the rising piece 751 of the fourth member 70B is different, the main body 71A of the third member 70A is placed on the support piece 752 of the fourth member 70B on the lower side in the gradient direction. The relationship that the sandwiched piece 753 of the fourth member 70B is sandwiched between the main body 71A and the sandwiching piece 722 of the third member 70A does not change. Therefore, the third member 70A and the fourth member 70B are closely engaged, and waterproof performance is ensured.
Further, even if the height dimension S3 of the rising piece 751 is freely set, the fourth member 70B can be easily manufactured because it is composed of only the fixed portion 36 and the connected portion 75B, and a dedicated renovated roofing material is separately provided. Compared to manufacturing, the cost is reduced.
[0057]
In the case of the second embodiment, since the heat insulating material attaching portion 33 and the fixing portion 36 are integrated, the height dimension of the fixing portion 36 provided in the first member 60A cannot be adjusted. Although the upper part in the gradient direction B of the renovated roofing material 60 cannot be lifted upward and attached, in this embodiment, since the heat insulating material attaching part 33 and the fixing part 36 are separate members, the entire renovating roofing material 70 is lifted and attached. I can do it. That is, even when the blisters or turns are in the vicinity of the fixed portion 36, the second embodiment cannot cope with this, but the present embodiment can cope.
[0058]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in each embodiment, the heat insulating material 37 is used as the face material, but a reinforcing material, a cushion material, or the like may be used.
Further, in each embodiment, the screw 39 is used as the penetrating material, but a nail or the like may be used.
[0059]
【The invention's effect】
According to the roof structure for renovation which is the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the refurbishing roof material is integrated with the existing roof structure by being fixed at the fixing portions, and the fixing roof is adjacent to the upper side in the gradient direction. While being covered with the material, the connecting portion of the roof material for refurbishment on the upper side in the gradient direction and the connected portion of the roof material for refurbishing on the lower side in the gradient direction are connected, and the fixed portion is not submerged. Therefore, waterproof performance can be exhibited.
In addition, when the existing roofing material is bulged or turned up due to deterioration over time, the surface of the existing roofing material is covered with a waterproofing layer even if the connection between the refurbishing roofing materials is insufficient. As a result, it does not leak into the room and can exhibit waterproof performance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a dormitory roof according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing accommodation of a renovated roof material as a roof material for renovation according to the first embodiment of the present invention.
FIG. 3 is a perspective view showing the arrangement of the renovated roofing material in the first embodiment.
FIG. 4 is an enlarged cross-sectional view showing a renovated roofing material in the first embodiment.
FIG. 5 is a perspective view showing a renovated roofing material in the first embodiment.
FIG. 6 is a cross-sectional view showing accommodation of a renovated roofing material in a second embodiment of the present invention.
FIG. 7 is a cross-sectional view showing accommodation of a renovated roofing material in a third embodiment of the present invention.
[Explanation of symbols]
1 dormitory roof
20 Slate roofing material as existing roofing material
30, 60, 70 Renovated roofing materials for renovation
31, 61A, 61B, 71A, 71B
32, 62, 72 connecting part
33 Insulation material attachment
34 Diagonal pieces
35, 65, 75, 75A, 75B
36 fixed part
37 Heat insulation as a face material
38 Tarpaulin as waterproof layer
39 Screws as penetrating materials
60A first member
60B second member
70A Third member
70B 4th member

Claims

A roof structure for renovation provided on the surface of an existing roof structure,
A waterproof layer covering the surface of the existing roof structure, and a plurality of roof materials for renovation connected to the waterproof layer,
The refurbished roofing material is formed in the upper part in the gradient direction of the refurbished roofing material, and is fixed to the existing roof structure, the connected part formed in the lower gradient direction than the fixed part, is formed in the slope direction below the refurbished roofing, Rutotomoni and a connecting portion for connecting the the connected portion of the refurbished roofing adjacent gradient direction lower side of the renovation roofing, the fixing from the connecting portion A first member that reaches the portion, and a second member that extends from the fixed portion to the connected portion,
The first member includes the connecting portion and a fixing portion formed at an upper portion in the gradient direction than the connecting portion, and the connecting portion is formed by bending a lower end portion in the gradient direction of the first member downward. A folded piece and a sandwiching piece formed by bending the tip of the folded piece further inward,
The second member includes the connected portion and a fixed portion that is fixed to the existing roof structure so as to overlap with the fixed portion of the first member, and the connected portion has a lower end in a gradient direction of the fixed portion. A rising piece formed by bending the portion upward, a support piece formed by bending the tip of the rising piece downward in the gradient direction, and a sandwiched piece formed by bending the tip of the support piece downward Comprising and including
The first member of the roof material for refurbishment that is adjacent to the upper side in the gradient direction with respect to the second member is placed on a support piece, and the second piece is sandwiched between the second piece and the second piece, A roof structure for refurbishment, wherein the upper first member is connected .

The refurbished roof structure according to claim 1,
The refurbishment roof structure, wherein the fixing part has a flat part fixed to the existing roof structure by a penetrating material.

The refurbished roof structure according to claim 1 or 2,
The connecting portion, the gradient direction lower end of the refurbished roof member is bent downward, renovated roof structure characterized in that its lower end portion is formed bent further towards the gradient direction upward.

The refurbished roof structure according to claim 3,
The refurbished roof structure characterized in that the connected portion has a slit shape into which the connecting portion can be inserted and has an opening downward in the gradient direction.

In the roof structure for refurbishment in any one of Claim 1 to 4,
The refurbished roof structure, wherein the connected portion is formed by cutting and raising a part of the refurbished roofing material.

In the roof structure for refurbishment in any one of Claim 1 to 5,
The roof material for refurbishment is characterized in that another surface material is laminated on either side of the front and back.

A method for constructing a roof structure for renovation provided on the surface of an existing roof structure,
The surface of the existing roof structure is covered with a waterproof layer, and a plurality of renovation roof materials are sequentially installed from the lower side to the upper side in the gradient direction of the existing roof structure,
The upper part in the gradient direction of each refurbishing roof material is fixed to the existing roof structure,
A renovation roof structure is formed by connecting a lower slope direction of the refurbished roofing material adjacent to the upper side in the gradient direction to an upper slope direction of the refurbishing roof material adjacent to the lower side in the gradient direction so as to cover the fixed portion. With steps,
As the roof material for renovation,
A first member including a connecting part connected to a connected part of the roof material for refurbishment adjacent to the lower side in the gradient direction of the roof material for refurbishment, and a fixing part formed at an upper part in the gradient direction from the connecting part; ,
A second member provided with the connected portion and a fixing portion that is fixed to the existing roof structure in an overlapping manner with the fixing portion of the first member;
In the connecting portion of the first member, a bent piece obtained by bending the lower end portion in the gradient direction of the first member downward and a sandwiching piece obtained by bending the tip of the bent piece further inward,
A rising piece in which the lower end portion in the gradient direction of the fixed portion is bent upward, a support piece in which the tip of the rising piece is bent downward in the gradient direction, and the tip of the support piece are directed downward. And a sandwiched piece that is bent into
The first member of the roof material for refurbishment adjacent to the upper side in the gradient direction with respect to the second member is placed on the support piece, and the sandwiched piece is sandwiched by the sandwiching piece, whereby the second member and The construction method of the roof structure for refurbishment characterized by connecting the said 1st member of the said upper side .

In the construction method of the roof structure for renovation of Claim 7,
A method for constructing a roof structure for renovation, comprising laminating another face material on either the front or back surface of the roof material for renovation.