JP4694028B2

JP4694028B2 - 3D tarpaulin

Info

Publication number: JP4694028B2
Application number: JP2001124940A
Authority: JP
Inventors: 保雄福地; 明広鍵山
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2001-04-23
Filing date: 2001-04-23
Publication date: 2011-06-01
Anticipated expiration: 2021-04-23
Also published as: JP2002317531A

Description

【０００１】
【発明の属する技術分野】
本発明は天窓、太陽電池、換気設備などの設置物が設けられた屋根に使用される屋根用立体型防水シートに関する。
【０００２】
【従来の技術】
建築物の屋根は、通常、屋根の下地である野地板上にシート状のアスファルトルーフィングを敷き、これを釘、タッカーなどで固定することにより防水処理し、その上に瓦などの屋根葺きを行うことにより施工されている。ところが最近では、建築物の屋根の天場あるいは傾斜部に、太陽電池、換気設備、天窓などの設置物を設け、屋根上のスペースを活用する場合が増加している。そのため、野地板上に単にシート状のアスファルトルーフィングを敷設するだけの方法では、屋根を防水できない場合が多くなってきている。
【０００３】
すなわち、設置物を屋根に設ける場合には、まず、設置物を取付るための取付土台を野地板上に形成する必要がある。取付土台は棟台、足場などと呼ばれ、木材などの建材からなり、設置物に応じた形状に野地板上に形成されたもので、野地板上に突出した状態であることが多い。このような取付土台が形成されると、野地板上が平坦でなく凹凸形状になるため、単にシート状のアルファルトルーフィングを敷設する方法では対応できない。
そこで、設置物を屋根上に設ける場合、野地板上の設置物を設置しない部分にはアルファルトルーフィングを敷設し、一方、取付土台と野地板との接合部分周辺や、取付土台の周面などには複数枚の防水シートをこれら凹凸形状にあわせて継ぎ接ぎして貼り付けたり、粘着テープを貼り付けたり、あるいはこれらにコーキング剤を塗布したりして防水処理を行うことが多い。
【０００４】
ところが、これらの方法は煩雑で作業効率が低いうえ、高所において長時間の作業を要してしまう。また、現場での作業であるために作業精度が低く、防水シートを継ぎ接ぎして貼り付けても隙間が生じてしまう場合があった。さらに、作業者によって技術の熟練度や施工方法が異なるため、一定の防水性能が安定に得られない場合があった。
そのため、例えば特開平９−１８４２６３号公報には、棟台の上面まで覆う形状にあらかじめ成形された成形防水シートを使用して、棟台周辺を防水する方法が提案されている。
【０００５】
【発明が解決しようとする課題】
しかしながら、特開平９−１８４２６３号公報に開示されているような成形防水シートを製造する際には、通常、各面を構成するための複数枚の防水シートを用意し、これらを継ぐことにより行う。そのため、成形防水シートの製造には手間や時間がかかり、生産性が不十分であった。また、このように複数枚の防水シートを継いだ形態では継ぎ目から雨水などが浸入しやすく、防水性も十分ではなかった。
【０００６】
本発明は上記事情に鑑みてなされたもので、設置物を屋根に設ける場合でも、現場での作業が簡単で、要する時間が非常に短く、かつ、作業者によらずに安定して一定の防水性能が得られるとともに、簡単に製造でき、非常に防水性に優れた立体型屋根用防水シートを提供することを課題とする。
【０００７】
【課題を解決するための手段】
本発明の立体型防水シートは、屋根に設置物が設けられる際に使用される屋根用立体型防水シートであって、一枚の防水シートが裁断され、切り込まれ、折曲されて立体成形され、前記防水シートの少なくとも一部は重なって、粘着テープにより接合され、前記設置物が取り付けられる取付土台に被さる形状に、あらかじめ立体成形されていることを特徴とする。
前記切り込まれた切り込み部の端部にはラップテープが披着されていることが好ましい。
前記取付土台は野地板上に形成されていて、前記立体型防水シートは前記野地板上にも延出していることが好ましい。
【０００８】
また、本発明の立体型防水シートは、四角形の上板と、該上板の第１辺に連続した第１側面片と、前記第１辺に対向する第２辺に連続した第２側面片と、前記第１辺と交わる第３辺および第４辺にそれぞれ連続した第３側面片および第４側面片とを有し、前記第１側面片の外方には第１延出片が連続して形成され、前記第２側面片の外方には第２延出片が連続して形成され、前記第３側面片の外方には第３延出片が連続して形成され、前記第４側面片の外方には第４延出片が連続して形成された防水シートの、前記第１側面片と前記第３側面片の少なくとも一部どうしが重ねられ、前記第１側面片と前記第４側面片の少なくとも一部どうしが重ねられ、前記第２側面片と前記第３側面片の少なくとも一部どうしが重ねられ、前記第２側面片と前記第４側面片の少なくとも一部どうしが重ねられ、前記第１延出片と前記第３延出片の少なくとも一部どうしが重ねられ、前記第１延出片と前記第４延出片の少なくとも一部どうしが重ねられ、前記第２延出片と前記第３延出片の少なくとも一部どうしが重ねられ、前記第２延出片と前記第４延出片の少なくとも一部どうしが重ねられて立体に形成されているものが好ましい。
【０００９】
あるいは、本発明の立体型防水シートは、四角形の上板と、該上板の第１辺に連続した第１側面片と、前記第１辺に対向する第２辺に連続した第２側面片と、前記第１辺と交わる第３辺および第４辺にそれぞれ連続した第３側面片および第４側面片とを有し、前記第１側面片は、第１辺の方向に第１片と第２片とに分けられ、前記第２側面片は、第２辺の方向に第３片と第４片とに分けられ、前記第１片の外方には第１延出片が連続して形成され、前記第２片の外方には第２延出片が連続して形成され、前記第３片の外方には第３延出片が連続して形成され、前記第４片の外方には第４延出片が連続して形成され、前記第３側面片の外方には第５延出片が連続して形成され、前記第４側面片の外方には第６延出片が連続して形成されたも防水シートの、前記第１片と前記第２片の少なくとも一部どうしが重ねられ、前記第３片と前記第４片の少なくとも一部どうしが重ねられ、前記第１片と第３側面片の少なくとも一部どうしが重ねられ、前記第２片と第４側面片の一部どうしが重ねられ、前記第３片と第３側面片の少なくとも一部どうしが重ねられ、前記第４片と第４側面片の少なくとも一部どうしが重ねられ、前記第１延出片と前記第５延出片の少なくとも一部どうしが重ねられ、前記第２延出片と前記第６延出片の少なくとも一部どうしが重ねられ、前記第３延出片と前記第５延出片の少なくとも一部どうしが重ねられ、前記第４延出片と前記第６延出片の一部どうしが重ねられ、前記第１延出片と前記第２延出片の少なくとも一部どうしが重ねられ、前記第３延出片と前記第４延出片の少なくとも一部どうしが重ねられて立体に形成されているものが好ましい。
また、前記上板には開口部が形成されていてもよい。
【００１０】
【発明の実施の形態】
以下、本発明を詳しく説明する。
図１は本発明の立体型防水シート１０の一形態であって、図２に示す形態の換気設備２０を設置物として屋根上に設ける場合に使用されるものである。図３および図４は、図１の立体型防水シート１０を使用して、図２の換気設備２０を屋根の天場に設置した状態を示す斜視図および縦断面図である。この例においては、野地板２１上にアスファルトルーフィング２７を介して取付土台２２が固定され、この取付土台２２の上に図１の立体型防水シート１０が被せられている。そして、その上に換気設備２０が笠木２３を介してネジ２４で取り付けられている。取付土台２２は一般には、棟台、足場などと呼ばれるものであり、取り付けられる設置物の種類や形状に応じて、木材や建材が組立加工されたものである。また、符号２５は瓦、符号２６は棟面戸である。
【００１１】
図１の立体型防水シート１０は、換気設備２０が取り付けられる取付土台２２に被さる形状に、あらかじめ立体成形されているものであり、この例のものは取付土台２２に被さるとともに野地板２１上にまで延出し、取付土台２２とその周辺とを防水するものである。この例の立体型防水シート１０は、図２に示す形態の換気設備２０を設ける際に使用されるものであるので、換気に必要な開口部１１が形成されている。
このような立体型防水シート１０は、例えば図５に示すように、ゴムシート１２の一方の面にゴム系接着剤１３を含浸させた布帛１４が積層した形態の一枚の防水シート１５を裁断し、切り込み、折曲して立体成形される。なお、ここで一枚の防水シート１５は、複数枚の防水シートを継いだものではなければ制限はなく、その構造は、図５のような積層構造でも一層構造でもよい。
【００１２】
ゴムシート１２としては、例えばＥＰＤＭ（エチレン・プロピレンゴム）とブチルゴムのブレンドゴムからなるものが使用される。このようなブレンドゴムを使用すると平滑性の良好なゴムシート１２が得られ好ましい。また、ゴムシート１２の厚みは３００〜７００μｍ程度が好ましい。３００μｍ未満では、十分な防水性と強度とが得られない場合がある。一方、７００μｍを超えると、このゴムシート１２を備えた防水シート１５の加工性が低下し、立体型防水シート１０を立体成形することが難しくなる場合があり、また、折曲箇所において反発力が発生し隙間が生じたり、接合箇所において段差が生じ、ここから水が浸入しやすくなる場合などがある。
ゴムシート１２の一方の面に設けられる布帛１４としては、例えばポリエステル織布が挙げられる。ポリエステル織布は耐熱性が優れ、１００℃で１０００時間養生した場合でも寸法変化が認められないため好適である。布帛１４の厚みは１００〜３００μｍである。１００μｍ未満では、引張応力が低く切れやすくなる傾向があり、一方３００μｍを超えると、この布帛１４自体が吸水し易くなるとともに、後述するように、布帛１４に粘着テープを貼った場合に粘着テープと布帛１４との間に隙間ができやすくなる傾向がある。
そして、この布帛１４をゴムシート１２の一方の面に設ける場合には、あらかじめこの布帛１４にゴム系接着剤１３を含浸させ、このゴム系接着剤１３の接着性により布帛１４とゴムシート１２とを接着し、一体化する。ゴム系接着剤１３としては、接着性に優れ、水と相溶しないブチルゴム系接着剤が好ましく、布帛１４の重量に対するゴム系接着剤の含浸量は、０．１〜０．３ｋｇ／ｍ²程度である。
【００１３】
このような防水シート１５は、高い防水性を備えていることはもちろん、ゴムシート１２の一方の面に布帛１４が備えられているので、ゴムシート１２の弾性が抑えられ立体成形しやすい。また、布帛１４にはゴム系接着剤１３が含浸されているので、ゴムシート１２と布帛１４とが良好に一体化するとともに、布帛１４にも防水性が与えられ、より防水性の優れた防水シート１５となる。また、布帛１４に含浸されたゴム系接着剤１３によって布帛１４自体が接着性を備えるため、この布帛１４側が取付土台２２に接するように、すなわち内側になるようにして立体型防水シート１０を立体成形すると、これを取付土台２２に被せた場合に立体型防水シート１０が取付土台２２や、図４の例においては野地板２１上のアスファルトルーフィング２７にも密着し、防水性がより高まる。また、防水シート１５の厚みが０．５ｍｍ以下であると、この防水シート１５を裁断および折曲して立体成形し、防水シート１５の一部を重なり合わせて接合した場合でも厚みを小さくでき、段差が抑えられるため好ましい。
【００１４】
この図１の例の立体型防水シート１０は、例えば、上述の防水シート１５を図６に示すように太実線に沿って裁断あるいは切り込みし、破線を山折りとし、一点破線を谷折りとして折曲することにより立体成形できる。
図６の防水シート１５は、四角形の上板４０と、この上板４０の第１辺４１に連続した第１側面片４２と、第１辺４１に対向する第２辺４３に連続した第２側面片４４と、第１辺４１と交わる第３辺４５および第４辺４６にそれぞれ連続した第３側面片４７および第４側面片４８とを有している。そして、第１側面片４２は、第１辺４１の方向に第１片４２ａと第２片４２ｂとに分けられ、これら第１片４２ａと第２片４２ｂの外方には第１延出片４９と第２延出片５０とがそれぞれに連続して形成されている。また、第２側面片４４は、第２辺４３の方向に第３片４４ａと第４片４４ｂとに分けられ、これら第３片４４ａと第４片４４ｂの外方には第３延出片５１と第４延出片５２とがそれぞれに連続して形成されている。一方、第３側面片４７の外方には第５延出片５３が連続して形成され、前記第４側面片４８の外方には第６延出片５４が連続して形成されている。
このような防水シート１５の第１片４２ａと第２片４２ｂの少なくとも一部どうしを重ね、第３片４４ａと第４片４４ｂの少なくとも一部どうしを重ね、第１片４２ａと第３側面片４７の少なくとも一部どうしを重ね、第２片４２ｂと第４側面片４８の一部どうしを重ね、第３片４４ａと第３側面片４７の少なくとも一部どうしを重ね、第４片４４ｂと第４側面片４８の少なくとも一部どうしを重ねる。また、第１延出片４９と第５延出片５３の少なくとも一部どうしを重ね、第２延出片５０と第６延出片５４の少なくとも一部どうしを重ね、第３延出片５１と第５延出片５３の少なくとも一部どうしを重ね、第４延出片５２と第６延出片５４の一部どうしを重ねる。そして、第１延出片４９と第２延出片５０の少なくとも一部どうしを重ね、第３延出片５１と第４延出片５２の少なくとも一部どうしを重ねることによって、図１の立体型防水シート１０を形成できる。
なおこの例の防水シート１５は、換気設備２０を設置する際に使用するものなので、上板には開口部１１が形成されている。
【００１５】
また、図６中、斜線部は立体成形することによって他の部分と重なる部分であり、この部分は両面に粘着性を有する粘着テープにより接合される。斜線部のうち実線の斜線部においては、防水シート１５の外面側に粘着テープを貼着し、この上に対応する他の部分を貼りあわせる。一方、破線斜線部においては、防水シート１５の内面側に粘着テープを粘着し、その下から対応する他の部分を貼りあわせる。
また、図６中、符号Ａの線条部と符号Ａ’の線条部とが一体となり立体型防水シートの辺を形成する。符号ＢとＢ’、符号ＣとＣ’、・・・・、符号ＬとＬ’も同様である。
また、防水シート１５として、図５のようなゴムシート１２の一方の面にゴム系接着剤１３を含浸させた布帛１４が積層した形態の防水シート１５を使用する場合には、布帛１４側が内側になるようにする。その結果、外側のゴムシートが確実に水をはじくとともに、立体型防水シート１０を取付土台２２に被せた場合に内側の布帛１４が、取付土台２２やアスファルトフーフィング２７に密着し、防水性が高まる。
【００１６】
防水シート１５の少なくとも一部を重ね、そこを接合する際に使用する粘着テープとしては、ブチルゴム、アクリルゴム、ウレタンゴム、ＳＩＳ（ポリスチレン−ポリイソプレン−ポリスチレン共重合体）、ＳＢＳ（ポリスチレン−ポリブタジエン−ポリスチレン共重合体）などからなるテープを使用できる。これらのなかでは、特に粘着性に優れ、耐候性、耐熱性、耐火性なども良好で、かつ、安価であることからブチルゴムを使用することが好ましい。テープの厚みは０．２〜０．５ｍｍ程度である。こうしてブチルゴムテープなどの粘着テープを使用して接合することによって、重なった部分からの水の浸入も防止することができる。
【００１７】
また、こうして得られた立体型防水シート１０において、特に防水シート１５が切り込まれた切り込み部１６の端部には、図７に示すようにラップテープ１７を披着することが好ましい。このように切り込み部１６の端部にラップテープ１７を披着することによって、切り込み部１６からの雨水の浸入をより確実に防止できるとともに、重なった部分に貼着された粘着テープが、長期間のうちに外部からの応力などで剥がれた場合やずれが生じた場合でも、防水性を維持することができる。なお、粘着テープとして、０．３〜０．５ｍｍ程度の比較的厚みの大きな粘着テープを使用する場合には、粘着テープの一部がラップテープ１７とも直接接合するように、粘着テープを図６斜線部よりも若干はみ出すように貼着させることが好ましい。
【００１８】
ラップテープ１７としては、図８に例示するような、例えば無延伸ポリプロピレン樹脂シート１７ａの一方の面に粘着層１７ｂを備えたものが好ましい。
無延伸ポリプロピレン樹脂シート１７ａとしては、キャスティングポリプロピレン樹脂（ＣＰＰ）フィルムなどが挙げられ、５０モル％以上のプロピレン単位成分を有する結晶性混合物を、配向させることなく無延伸状態で均一な厚みにフィルム化したものなどを使用する。このような無延伸ポリプロピレン樹脂シート１７ａは、ある程度までの伸びには復元性があるが一定の伸びを超えると復元しない。例えば、厚みが５０μｍの無延伸ポリプロピレン樹脂シート１７ａは、３０％までの伸びには復元するが、それより大きな伸びには復元せず、残留応力を持たない。よって、このような無延伸ポリプロピレン樹脂シート１７ａを備えたラップテープ１７を使用すると、立体型防水シート１０のに応力が加わって重なった部分の粘着テープが剥がれそうになっても、このラップテープ１７がその応力に対応してある程度まで伸び、切れないため、立体型防水シート１０の防水性を維持できる。また、この無延伸ポリプロピレン樹脂シート１７ａは、ある一定の伸び以上になると残留応力を持たなくなるので、収縮しようとして剥がれてしまうこともない。さらにこのような無延伸ポリプロピレン樹脂シート１７ａは、−３０℃程度の低温から＋１５０℃程度の高温までの広い範囲において、優れた耐衝撃性、物理特性を示すうえ、寸法の変化が少ない。よって、屋外での使用（−２０℃〜＋８０℃）に十分に適する。
【００１９】
一方、ラップテープ１７の粘着層１７ｂには、水と相溶せず、粘着性、流動性の大きなブチルゴムやゴムアスファルトなどの粘着材が使用される。これらは凝集力が大きく、−２０℃〜＋８０℃の範囲では常に軟質で応力によって流動する。よって、立体型防水シート１０の切り込み部１６近傍に応力が加わっても、その応力に対応して流動し、小さな隙間も埋めることができる。粘着材としては、１ｍｍ厚でのインチ平方の断面でのずり応力が５〜１０ｋｇ／インチ²で、この時の伸びが１０００％以上であるものが適している。
【００２０】
次に図９〜図１０を示し、図１の例の立体型防水シート１０を使用して図２の換気設備２０を屋根の天場に設置する工程を説明する。
まず、図９（ａ）に示すように、野地板２１の上にアスファルトルーフィング２７を敷設し、その上にあらかじめ木材が組立加工されて形成された取付土台２２を載置し、図示略のネジなどで固定する。取付土台２２には、この上に設置する換気設備２０の用途および形状に対応して開口部２２ａが形成されている。
ついで、この取付土台２２上に、図９（ｂ）〜（ｃ）に示すように図１の立体型防水シート１０を被せ、テープ２９でこれをアスファルトルーフィング２７に固定するとともに、図示略のタッカーなどの締結具を使用して、立体型防水シート１０を適宜野地板２１と、野地板２１の下方にある図示略の垂木とに固定する。
【００２１】
ついで、図１０（ａ）に示すように、取付土台２２の取り付けられていない棟部分に４本の木桟２８を取り付けて固定するとともに、アスファルトルーフィング２７における、取付土台２２の開口部２２ａおよび立体型防水シート１０の開口部１１に対応する不要部分２７ａを切り取る。そして、図示は略すが、アスファルトルーフィング２７上および立体体型防水シート１０の延出している部分の上に瓦を葺く。
そして、図１０（ｂ）に示すように、立体型防水シート１０および木桟２８上の所定位置に２枚の笠木２３を取付け、その上に、２枚の棟包み３０を固定し、さらにこれら２枚の棟包み３０の間に、開口部３１ａが形成された１枚の棟包み３１を固定する。
ついで図１０（ｃ）に示すように、換気設備２０の下部材２０ａ、上部材２０ｂを順次載置して固定することにより、図３および図４のように屋根の天場に換気設備２０を設置することができる。
【００２２】
また、本発明の立体型防水シート１０は、設置物として換気設備２０を設ける場合だけでなく、例えば、太陽電池、天窓など様々な設置物を設ける場合に最適である。
例えば、太陽電池や天窓を屋根の傾斜部に設ける場合には、図１１に示すような形態の立体型防水シート１０を使用する。これを製造する場合には、図１２に示すように太実線に沿って裁断され、切り込まれた防水シート１５を使用し、これの破線を山折り、一点破線を谷折りとして折曲する。
この図示例の防水シート１５は、開口部１１が形成された四角形の上板６０と、この上板６０の第１辺６１に連続した第１側面片６２と、第１辺６１に対向する第２辺６３に連続した第２側面片６４と、第１辺６１と交わる第３辺６５および第４辺６６にそれぞれ連続した第３側面片６７および第４側面片６８とを有している。第１側面片６２の外方には第１延出片６９が連続して形成され、第２側面片６４の外方には第２延出片７０が連続して形成され、第３側面片６７の外方には第３延出片７１が連続して形成され、第４側面片６８の外方には第４延出片７２が連続して形成されている。
そして、第１側面片６２と第３側面片６７の少なくとも一部どうしを重ね、第１側面片６２と第４側面片６８の少なくとも一部どうしを重ね、第２側面片６４と第３側面片６７の少なくとも一部どうしを重ね、第２側面片６４と第４側面片６８の少なくとも一部どうしを重ねる。そしてさらに、第１延出片６９と第３延出片７１の少なくとも一部どうしを重ね、第１延出片６９と第４延出片７２の少なくとも一部どうしを重ね、第２延出片７０と第３延出片７１の少なくとも一部どうしを重ね、第２延出片７０と第４延出片７２の少なくとも一部どうしを重ねる。
図１２中、斜線部は立体成形することによって他の部分と重なる部分であり、両面に粘着性を有する粘着テープにより接合される。また、切り込み部１６の端部にはラップテープを被着することが好ましい。
【００２３】
このような立体型防水シート１０は、一枚の防水シート１５が裁断され、切り込まれ、折曲されて立体成形され、防水シート１５の少なくとも一部は重なって、粘着テープにより接合されて、設置物が取り付けられる取付土台２２に被さる形状に、あらかじめ立体成形されたものである。よって、これを屋根の所定位置に配置して固定するだけの簡単かつ短時間の作業で、確実な防水処理を行える。そして、特にこの立体型防水シート１０は、一枚の防水シート１５から形成されているので、従来のように複数枚の防水シートを継いで製造されたものにくらべて非常に防水性が高い。さらに、このような立体型防水シート１０を配置、固定する作業は簡単であって熟練を要しないため、作業者によらずに安定して一定の防水性能が得られる。また、短時間の簡単な作業なので高所作業における作業者の安全も高まる。
そして、切り込み部１６の端部を覆うようにラップテープ１７を披着することにより、長期間の使用のうち粘着テープが外部からの応力などで剥がれた場合やずれが生じた場合でも、防水性を維持できる。
また特に、取付土台２２が野地板２１上に形成されている場合、防水シート１５が野地板２１上にまで延出するように立体型防水シート１０が形成されていると、凹凸形状で高度に防水するのが困難であり、非常に手間がかかった取付土台２２の周辺をも確実に防水できる。
また、この立体型防水シート１０は、一枚の防水シート１５を、設置物の形状に合った型に裁断し、切り込みを入れた後折曲し、少なくとも一部を重ね、粘着テープで接合するだけの簡単な方法で得られるので、あらかじめ大量に製造することが容易であり、複数の形状の防水シートを裁断、用意し、これを継いで製造していた従来のものに比べて非常に効率的である。また、粘着テープで接合しているので、接合部分の防水性も高く維持できる。
このような立体型防水シート１０は、換気設備２０だけでなく、太陽電池、天窓など様々な設置物を屋根の天場や傾斜部に設ける場合に有効である。
【００２４】
【発明の効果】
以上説明したように本発明の立体型防水シートを使用することによって、設置物を取り付けるための取付土台が形成された凹凸形状の屋根であっても、簡単かつ短時間の作業で、安全かつ非常に確実に防水処理を行える。また本発明の立体型防水シートは簡単に大量に製造できるので、設置物を設ける形態の屋根の増加にも対応可能である。
【図面の簡単な説明】
【図１】本発明の立体型防水シートの一形態を示す斜視図である。
【図２】図１の立体型防水シートを使用して設置する換気設備の斜視図である。
【図３】図１の立体型防水シートを使用して、図２の換気設備を屋根に設置した状態を示す斜視図である。
【図４】図３のＡ−Ａ’線に沿う縦断面図である。
【図５】図１の立体型防水シートに使用する防水シートの一例を示す断面図である。
【図６】図１の立体型防水シートを形成するための防水シートの形状を示す平面図である。
【図７】本発明の立体型防水シートの他の形態を示す部分拡大斜視部である。
【図８】図７の立体型防水シートに使用するラップテープの一例を示す断面図である。
【図９】図１の立体型防水シートを、屋根の上に取り付ける様子を示す工程図である。
【図１０】図９の工程後、換気設備を設ける様子を示す工程図である。
【図１１】本発明の立体型防水シート他の一形態を示す斜視図である。
【図１２】図１１の立体型防水シートを形成するための防水シートの形状を示す平面図である。
【符号の説明】
１０…立体型防水シート、１５…防水シート、１６…切り込み部、２１…野地板、２２…取付土台、４０、６０…上板、４１、６１…第１辺、４２、６２…第１側面片、４２ａ…第１片、４２ｂ…第２片、４３、６３…第２辺、４４、６４…第２側面片、４４ａ…第３片、４４ｂ…第４片、４５、６５…第３辺、４６、６６…第４辺、４７、６７…第３側面片、４８、６８…第４側面片、４９、６９…第１延出片、５０、７０…第２延出片、５１、７１…第３延出片、５２、７２…第４延出片、５３…第５延出片、５４…第６延出片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional waterproof sheet for roofs used for a roof provided with installation objects such as skylights, solar cells, and ventilation equipment.
[0002]
[Prior art]
The roof of a building is usually waterproofed by placing a sheet-shaped asphalt roofing on a baseboard, which is the foundation of the roof, and fixing it with nails, tuckers, etc., and roofing it with tiles, etc. It is constructed by. However, recently, installations such as solar cells, ventilation equipment, skylights, etc. are provided on the roof or the slope of the roof of a building to utilize the space on the roof. For this reason, roofs cannot often be waterproofed by simply laying sheet-shaped asphalt roofing on the field board.
[0003]
That is, when the installation object is provided on the roof, first, it is necessary to form an attachment base for attaching the installation object on the base plate. The mounting base is called a building base or a scaffold, and is made of building materials such as wood, and is formed on the field board in a shape corresponding to the installation object, and often protrudes on the field board. When such a mounting base is formed, the top of the base plate is not flat but uneven, and cannot be handled by simply laying a sheet-like alpha roofing.
Therefore, when installing the installation on the roof, alpha roofing is laid on the part where the installation on the base plate is not installed, while the periphery of the joint between the mounting base and the base plate, the peripheral surface of the mounting base, etc. In many cases, waterproofing is performed by joining a plurality of waterproof sheets in accordance with the uneven shape, affixing an adhesive tape, or applying a caulking agent thereto.
[0004]
However, these methods are complicated and low in work efficiency, and require a long time of work at a high place. In addition, since the work is on-site, the work accuracy is low, and a gap may occur even when the waterproof sheet is joined and pasted. Furthermore, since the skill level of the technique and the construction method differ depending on the operator, there are cases where a certain waterproof performance cannot be obtained stably.
For this reason, for example, Japanese Patent Laid-Open No. 9-184263 proposes a method of waterproofing the periphery of the ridge base using a molded waterproof sheet pre-formed in a shape covering the top surface of the ridge base.
[0005]
[Problems to be solved by the invention]
However, when manufacturing a molded waterproof sheet as disclosed in JP-A-9-184263, it is usually performed by preparing a plurality of waterproof sheets for constituting each surface and succeeding them. . Therefore, the production of the molded waterproof sheet takes time and effort, and the productivity is insufficient. Further, in the form in which a plurality of waterproof sheets are joined as described above, rainwater or the like easily enters from the joint, and the waterproofness is not sufficient.
[0006]
The present invention has been made in view of the above circumstances, and even when the installation object is provided on the roof, the work at the site is simple, the time required is very short, and it is stable and constant regardless of the operator. It is an object of the present invention to provide a three-dimensional roof waterproof sheet that can provide waterproof performance, can be easily manufactured, and is extremely waterproof.
[0007]
[Means for Solving the Problems]
The three-dimensional waterproof sheet of the present invention is a three-dimensional waterproof sheet for roofs used when an installation is provided on a roof, and a single waterproof sheet is cut, cut, bent and three-dimensionally molded. In addition, at least a part of the waterproof sheet is overlapped and joined by an adhesive tape, and is three-dimensionally molded in advance so as to cover a mounting base to which the installation object is attached.
It is preferable that a wrap tape is displayed at the end of the cut portion.
The mounting base is preferably formed on a base plate, and the three-dimensional waterproof sheet extends on the base plate.
[0008]
The three-dimensional waterproof sheet of the present invention includes a rectangular upper plate, a first side piece continuous to the first side of the upper plate, and a second side piece continuous to the second side facing the first side. And a third side piece and a fourth side piece continuous to the third side and the fourth side intersecting with the first side, respectively, and the first extending piece is continuous outside the first side piece. A second extending piece is formed continuously outside the second side piece, and a third extending piece is formed continuously outside the third side piece, At least a part of the first side piece and the third side piece of a waterproof sheet in which a fourth extending piece is continuously formed is overlapped outside the fourth side piece, and the first side piece And at least a part of the fourth side piece is overlaid, at least a part of the second side piece and the third side piece are overlaid, and the second side piece and At least a part of the fourth side piece is overlapped, at least a part of the first extension piece and the third extension piece are overlapped, and the first extension piece and the fourth extension piece At least a part of the second extension piece and the third extension piece are overlapped, and at least a part of the second extension piece and the fourth extension piece overlap each other. It is preferably formed in a three-dimensional form.
[0009]
Alternatively, the three-dimensional waterproof sheet of the present invention includes a rectangular upper plate, a first side piece continuous to the first side of the upper plate, and a second side piece continuous to the second side facing the first side. And a third side piece and a fourth side piece that are continuous with the third side and the fourth side, respectively, intersecting the first side, and the first side piece and the first piece in the direction of the first side The second side piece is divided into a third piece and a fourth piece in the direction of the second side, and the first extension piece is continuous to the outside of the first piece. The second piece is continuously formed on the outer side of the second piece, the third extended piece is formed on the outer side of the third piece, and the fourth piece. A fourth extending piece is formed continuously outside the third side piece, a fifth extending piece is formed continuously outside the third side piece, and a fourth extension piece is formed outside the fourth side piece. 6 extension pieces are formed continuously and waterproof At least a part of the first piece and the second piece of the sheet are overlapped, at least a part of the third piece and the fourth piece are overlapped, and the first piece and the third side piece At least a part of the second piece and the fourth side piece are overlapped, at least a part of the third piece and the third side piece are overlapped, and the fourth piece and the fourth piece. At least a part of the side piece is overlapped, at least a part of the first extension piece and the fifth extension piece are overlapped, and at least a part of the second extension piece and the sixth extension piece. The third extension piece and the fifth extension piece are at least partially overlapped, the fourth extension piece and the sixth extension piece are partially overlapped, and the At least a part of the first extension piece and the second extension piece are overlapped, and the third extension piece and the second extension piece 4 at least partially each other are overlapped in the extending piece being formed on the solid is preferred.
An opening may be formed in the upper plate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
FIG. 1 is one form of the three-dimensional waterproof sheet 10 of the present invention, and is used when a ventilation facility 20 having the form shown in FIG. 2 is provided on a roof as an installation. 3 and 4 are a perspective view and a longitudinal sectional view showing a state in which the ventilation equipment 20 of FIG. 2 is installed on the roof top using the three-dimensional waterproof sheet 10 of FIG. In this example, a mounting base 22 is fixed on a base plate 21 via an asphalt roofing 27, and the three-dimensional waterproof sheet 10 of FIG. 1 is covered on the mounting base 22. And the ventilation equipment 20 is attached with the screw 24 via the coping 23 on it. The mounting base 22 is generally called a building base or a scaffold, and is made by assembling and processing wood and building materials according to the type and shape of the installation object to be attached. Reference numeral 25 denotes a roof tile, and reference numeral 26 denotes a building door.
[0011]
The three-dimensional waterproof sheet 10 of FIG. 1 is three-dimensionally formed in advance in a shape that covers the mounting base 22 to which the ventilation equipment 20 is attached. In this example, the three-dimensional waterproof sheet 10 covers the mounting base 22 and on the base plate 21. The mounting base 22 and its periphery are waterproofed. Since the three-dimensional waterproof sheet 10 of this example is used when the ventilation facility 20 having the form shown in FIG. 2 is provided, the opening 11 necessary for ventilation is formed.
For example, as shown in FIG. 5, such a three-dimensional waterproof sheet 10 is formed by cutting a single waterproof sheet 15 in which a fabric 14 impregnated with a rubber adhesive 13 is laminated on one surface of a rubber sheet 12. Then, it is cut and bent to form a three-dimensional shape. Here, the single waterproof sheet 15 is not limited as long as a plurality of waterproof sheets are not joined, and the structure may be a laminated structure as shown in FIG. 5 or a single layer structure.
[0012]
As the rubber sheet 12, for example, a rubber sheet made of a blend rubber of EPDM (ethylene / propylene rubber) and butyl rubber is used. Use of such a blend rubber is preferable because a rubber sheet 12 having good smoothness can be obtained. The thickness of the rubber sheet 12 is preferably about 300 to 700 μm. If it is less than 300 μm, sufficient waterproofness and strength may not be obtained. On the other hand, if it exceeds 700 μm, the workability of the waterproof sheet 15 provided with the rubber sheet 12 may be reduced, and it may be difficult to form the three-dimensional waterproof sheet 10 in three-dimensional form. There may be a case where a gap is generated and a step is formed at a joint portion, and water easily enters from there.
Examples of the fabric 14 provided on one surface of the rubber sheet 12 include a polyester woven fabric. Polyester woven fabric is suitable because it has excellent heat resistance, and no dimensional change is observed even after curing at 100 ° C. for 1000 hours. The thickness of the fabric 14 is 100 to 300 μm. If the thickness is less than 100 μm, the tensile stress tends to be low, and if it exceeds 300 μm, the fabric 14 itself easily absorbs water, and as will be described later, when the adhesive tape is applied to the fabric 14, There is a tendency that a gap is easily formed between the fabric 14.
When the fabric 14 is provided on one surface of the rubber sheet 12, the fabric 14 is impregnated with the rubber adhesive 13 in advance, and the fabric 14 and the rubber sheet 12 are bonded to each other by the adhesiveness of the rubber adhesive 13. Are bonded and integrated. The rubber adhesive 13 is preferably a butyl rubber adhesive that is excellent in adhesiveness and incompatible with water, and the impregnation amount of the rubber adhesive with respect to the weight of the fabric 14 is 0.1 to 0.3 kg / m. ² Degree.
[0013]
Such a waterproof sheet 15 has high waterproofness, and since the fabric 14 is provided on one surface of the rubber sheet 12, the elasticity of the rubber sheet 12 is suppressed and the three-dimensional molding is easy. Further, since the fabric 14 is impregnated with the rubber-based adhesive 13, the rubber sheet 12 and the fabric 14 are well integrated, and the fabric 14 is also provided with a waterproof property. Sheet 15 is obtained. Further, since the fabric 14 itself has adhesiveness by the rubber adhesive 13 impregnated in the fabric 14, the three-dimensional waterproof sheet 10 is three-dimensionally so that the fabric 14 side is in contact with the mounting base 22, that is, inside. When molded, the three-dimensional waterproof sheet 10 is in close contact with the mounting base 22 and the asphalt roofing 27 on the base plate 21 in the example of FIG. Moreover, when the thickness of the waterproof sheet 15 is 0.5 mm or less, the waterproof sheet 15 is cut and bent to form a three-dimensional shape, and even when a part of the waterproof sheet 15 is overlapped and joined, the thickness can be reduced. This is preferable because the step is suppressed.
[0014]
The three-dimensional waterproof sheet 10 of the example of FIG. 1 is formed by cutting or cutting the above-described waterproof sheet 15 along a thick solid line as shown in FIG. Three-dimensional molding can be performed by bending.
The waterproof sheet 15 of FIG. 6 includes a rectangular upper plate 40, a first side piece 42 continuous with the first side 41 of the upper plate 40, and a second side continuous with the second side 43 facing the first side 41. The side piece 44 has a third side piece 47 and a fourth side piece 48 that are continuous with the third side 45 and the fourth side 46 that intersect the first side 41, respectively. And the 1st side piece 42 is divided into the 1st piece 42a and the 2nd piece 42b in the direction of the 1st edge | side 41, The 1st extension piece is on the outer side of these 1st piece 42a and the 2nd piece 42b. 49 and the 2nd extension piece 50 are each formed continuously. Further, the second side piece 44 is divided into a third piece 44a and a fourth piece 44b in the direction of the second side 43, and a third extending piece is provided outside the third piece 44a and the fourth piece 44b. 51 and the 4th extension piece 52 are each formed continuously. On the other hand, a fifth extending piece 53 is continuously formed outside the third side piece 47, and a sixth extending piece 54 is formed continuously outside the fourth side piece 48. .
At least a part of the first piece 42a and the second piece 42b of the waterproof sheet 15 is overlapped, at least a part of the third piece 44a and the fourth piece 44b is overlapped, and the first piece 42a and the third side piece. 47, the second piece 42b and the fourth side piece 48 are overlapped, the third piece 44a and the third side piece 47 are overlapped, and the fourth piece 44b and the fourth piece 44b are overlapped. At least a part of the four side pieces 48 is overlapped. Further, at least a part of the first extension piece 49 and the fifth extension piece 53 are overlapped, and at least a part of the second extension piece 50 and the sixth extension piece 54 are overlapped, and the third extension piece 51 is overlapped. And at least a part of the fifth extending piece 53 are overlapped, and a part of the fourth extending piece 52 and the sixth extending piece 54 are overlapped. Then, at least a part of the first extension piece 49 and the second extension piece 50 are overlapped, and at least a part of the third extension piece 51 and the fourth extension piece 52 are overlapped, thereby the three-dimensional structure of FIG. The mold waterproof sheet 10 can be formed.
In addition, since the waterproof sheet 15 of this example is used when installing the ventilation equipment 20, the opening part 11 is formed in the upper board.
[0015]
In FIG. 6, the hatched portion is a portion that overlaps with other portions by three-dimensional molding, and this portion is bonded to both surfaces by an adhesive tape having adhesiveness. In the hatched portion of the solid line, an adhesive tape is attached to the outer surface side of the waterproof sheet 15, and the corresponding other portion is attached thereon. On the other hand, in the hatched portion of the broken line, an adhesive tape is adhered to the inner surface side of the waterproof sheet 15, and the corresponding other portion is bonded from below.
Further, in FIG. 6, the line portion denoted by reference numeral A and the line portion denoted by reference numeral A ′ are integrated to form the side of the three-dimensional waterproof sheet. The same applies to the symbols B and B ′, the symbols C and C ′,..., And the symbols L and L ′.
Further, when the waterproof sheet 15 is used in which the fabric 14 impregnated with the rubber adhesive 13 is laminated on one surface of the rubber sheet 12 as shown in FIG. To be. As a result, the outer rubber sheet reliably repels water, and when the three-dimensional waterproof sheet 10 is placed on the mounting base 22, the inner fabric 14 is in close contact with the mounting base 22 and the asphalt hoofing 27, and is waterproof. Rise.
[0016]
As the adhesive tape used for overlapping at least a part of the waterproof sheet 15 and joining the same, butyl rubber, acrylic rubber, urethane rubber, SIS (polystyrene-polyisoprene-polystyrene copolymer), SBS (polystyrene-polybutadiene-) A tape made of a polystyrene copolymer) or the like can be used. Among these, it is preferable to use butyl rubber because it is particularly excellent in adhesiveness, weather resistance, heat resistance, fire resistance, etc. are good and inexpensive. The thickness of the tape is about 0.2 to 0.5 mm. In this way, by using an adhesive tape such as a butyl rubber tape, it is possible to prevent water from entering from the overlapped portion.
[0017]
Moreover, in the three-dimensional waterproof sheet 10 obtained in this way, it is preferable to wrap the wrap tape 17 as shown in FIG. 7 at the end of the cut portion 16 into which the waterproof sheet 15 is cut. By showing the wrap tape 17 at the end of the cut portion 16 in this way, the intrusion of rainwater from the cut portion 16 can be prevented more reliably, and the adhesive tape attached to the overlapping portion can be used for a long time. Even when peeling occurs due to external stress or the like, waterproofness can be maintained. In addition, when using the adhesive tape with comparatively big thickness of about 0.3-0.5 mm as an adhesive tape, an adhesive tape is shown in FIG. 6 so that a part of adhesive tape may also join directly with the wrap tape 17. FIG. It is preferable that the sticking is performed so as to protrude slightly from the hatched portion.
[0018]
As the wrap tape 17, for example, one provided with an adhesive layer 17b on one surface of an unstretched polypropylene resin sheet 17a as illustrated in FIG. 8 is preferable.
Examples of the unstretched polypropylene resin sheet 17a include a casting polypropylene resin (CPP) film. A crystalline mixture having a propylene unit component of 50 mol% or more is formed into a uniform thickness in a nonstretched state without orientation. Use what you did. Such an unstretched polypropylene resin sheet 17a has a restoring property to a certain degree of elongation, but does not recover when it exceeds a certain elongation. For example, the unstretched polypropylene resin sheet 17a having a thickness of 50 μm is restored to an elongation of up to 30%, but is not restored to a larger elongation and has no residual stress. Therefore, when the wrap tape 17 provided with such an unstretched polypropylene resin sheet 17a is used, even if stress is applied to the three-dimensional waterproof sheet 10 and the adhesive tape in the overlapping portion is likely to peel off, the wrap tape 17 However, the water resistance of the three-dimensional waterproof sheet 10 can be maintained. In addition, the unstretched polypropylene resin sheet 17a does not have residual stress when the elongation is equal to or greater than a certain elongation, so that it does not peel off in an attempt to shrink. Further, such an unstretched polypropylene resin sheet 17a exhibits excellent impact resistance and physical properties and has little change in dimensions in a wide range from a low temperature of about −30 ° C. to a high temperature of about + 150 ° C. Therefore, it is well suited for outdoor use (-20 ° C to + 80 ° C).
[0019]
On the other hand, for the adhesive layer 17b of the wrap tape 17, an adhesive material such as butyl rubber or rubber asphalt, which is incompatible with water and has high adhesiveness and fluidity, is used. These have a large cohesive force and are always soft and flow due to stress in the range of -20 ° C to + 80 ° C. Therefore, even if a stress is applied in the vicinity of the cut portion 16 of the three-dimensional waterproof sheet 10, it flows according to the stress and can fill a small gap. The adhesive material has a shear stress of 5 to 10 kg / inch at a cross section of inch square with a thickness of 1 mm. ² Thus, those having an elongation of 1000% or more at this time are suitable.
[0020]
Next, a process of installing the ventilation facility 20 of FIG. 2 on the roof top using the three-dimensional waterproof sheet 10 of the example of FIG. 1 will be described with reference to FIGS.
First, as shown in FIG. 9 (a), an asphalt roofing 27 is laid on a field board 21, and a mounting base 22 formed by assembling and processing wood in advance is placed thereon. Fix with etc. The mounting base 22 is formed with an opening 22a corresponding to the use and shape of the ventilation equipment 20 installed thereon.
Next, the mounting base 22 is covered with the three-dimensional waterproof sheet 10 of FIG. 1 as shown in FIGS. 9B to 9C, and this is fixed to the asphalt roofing 27 with the tape 29. The three-dimensional waterproof sheet 10 is appropriately fixed to the base plate 21 and a rafter (not shown) below the base plate 21 using fasteners such as the above.
[0021]
Next, as shown in FIG. 10 (a), the four wooden crosspieces 28 are attached and fixed to the ridge portion where the attachment base 22 is not attached, and the opening 22a and the three-dimensional structure of the attachment base 22 in the asphalt roofing 27 are provided. Unnecessary portions 27 a corresponding to the openings 11 of the mold waterproof sheet 10 are cut out. And although illustration is abbreviate | omitted, a tile is spread | worn on the asphalt roofing 27 and the part which the three-dimensional body type | mold waterproofing sheet 10 is extended.
Then, as shown in FIG. 10 (b), two headboards 23 are attached at predetermined positions on the three-dimensional waterproof sheet 10 and the wooden crosspiece 28, and two ridge wraps 30 are fixed thereon, and these Between the two ridge wraps 30, one ridge wrap 31 having an opening 31 a is fixed.
Next, as shown in FIG. 10C, the lower member 20a and the upper member 20b of the ventilation equipment 20 are sequentially placed and fixed, so that the ventilation equipment 20 is placed on the roof top as shown in FIGS. Can be installed.
[0022]
The three-dimensional waterproof sheet 10 of the present invention is optimal not only when the ventilation facility 20 is provided as an installation object, but also when various installation objects such as solar cells and skylights are provided.
For example, when a solar cell or a skylight is provided on an inclined portion of a roof, a three-dimensional waterproof sheet 10 having a form as shown in FIG. 11 is used. When this is manufactured, as shown in FIG. 12, the waterproof sheet 15 cut and cut along the thick solid line is used, and the broken line is folded in a mountain and the one-dot broken line is folded in a valley.
The waterproof sheet 15 in the illustrated example includes a rectangular upper plate 60 in which the opening 11 is formed, a first side piece 62 that is continuous with the first side 61 of the upper plate 60, and a first plate that faces the first side 61. It has the 2nd side piece 64 which continued to the 2nd side 63, and the 3rd side piece 67 and the 4th side piece 68 which continued to the 3rd side 65 and the 4th side 66 which cross | intersect the 1st side 61, respectively. A first extending piece 69 is continuously formed outside the first side piece 62, a second extending piece 70 is continuously formed outside the second side piece 64, and a third side piece is formed. A third extending piece 71 is continuously formed outside 67, and a fourth extending piece 72 is continuously formed outside the fourth side piece 68.
Then, at least a part of the first side piece 62 and the third side piece 67 are overlapped, and at least a part of the first side piece 62 and the fourth side piece 68 are overlapped, and the second side piece 64 and the third side piece are overlapped. At least a part of 67 is overlapped, and at least a part of the second side piece 64 and the fourth side piece 68 is overlapped. Further, at least a part of the first extension piece 69 and the third extension piece 71 are overlapped, and at least a part of the first extension piece 69 and the fourth extension piece 72 are overlapped, and the second extension piece 70 and at least a part of the third extension piece 71 are overlapped, and at least a part of the second extension piece 70 and the fourth extension piece 72 are overlapped.
In FIG. 12, the hatched portion is a portion that overlaps with other portions by three-dimensional molding, and is bonded to both surfaces by an adhesive tape having adhesiveness. Moreover, it is preferable to attach a wrap tape to the end of the cut portion 16.
[0023]
In such a three-dimensional waterproof sheet 10, a single waterproof sheet 15 is cut, cut, bent, and three-dimensionally molded, and at least a part of the waterproof sheet 15 overlaps and is joined by an adhesive tape, It is three-dimensionally molded in advance into a shape covering the mounting base 22 to which the installation object is attached. Therefore, a reliable waterproofing process can be performed by a simple and short-time operation in which this is arranged and fixed at a predetermined position on the roof. In particular, since the three-dimensional waterproof sheet 10 is formed from a single waterproof sheet 15, it is very waterproof compared to a conventional one manufactured by joining a plurality of waterproof sheets. Furthermore, since the operation | work which arrange | positions and fixes such a three-dimensional waterproof sheet 10 is simple and does not require skill, a fixed waterproof performance can be stably obtained regardless of the operator. In addition, since the work is simple for a short time, the safety of the worker in high-altitude work is also increased.
And by wrapping the wrap tape 17 so as to cover the end portion of the cut portion 16, even if the adhesive tape is peeled off due to external stress or the like during long-term use, it is waterproof. Can be maintained.
In particular, when the mounting base 22 is formed on the field board 21, if the three-dimensional waterproof sheet 10 is formed so that the waterproof sheet 15 extends to the field board 21, it is highly uneven and highly advanced. It is difficult to waterproof, and the periphery of the mounting base 22 that is very troublesome can be reliably waterproofed.
In addition, the three-dimensional waterproof sheet 10 is obtained by cutting a single waterproof sheet 15 into a mold that matches the shape of the installation, bending it after cutting it, overlapping at least a part thereof, and joining them with an adhesive tape. It is easy to manufacture in large quantities in advance, so it is very efficient compared to conventional products that were manufactured by cutting and preparing multiple shapes of waterproof sheets. Is. Moreover, since it joins with the adhesive tape, the waterproofness of a junction part can be maintained highly.
Such a three-dimensional waterproof sheet 10 is effective when not only the ventilation facility 20 but also various installation objects such as solar cells and skylights are provided on the roof top and slopes.
[0024]
【The invention's effect】
As described above, by using the three-dimensional waterproof sheet of the present invention, even a rugged roof on which a mounting base for mounting an installation is formed can be safely and very easily operated in a simple and short work. Can be reliably waterproofed. Moreover, since the three-dimensional waterproof sheet of the present invention can be easily manufactured in large quantities, it is possible to cope with an increase in the number of roofs provided with installation objects.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a three-dimensional waterproof sheet of the present invention.
FIG. 2 is a perspective view of a ventilation facility installed using the three-dimensional waterproof sheet of FIG.
3 is a perspective view showing a state in which the ventilation equipment of FIG. 2 is installed on a roof using the three-dimensional waterproof sheet of FIG.
4 is a longitudinal sectional view taken along line AA ′ of FIG. 3. FIG.
5 is a cross-sectional view showing an example of a waterproof sheet used for the three-dimensional waterproof sheet in FIG. 1. FIG.
6 is a plan view showing the shape of a waterproof sheet for forming the three-dimensional waterproof sheet of FIG. 1. FIG.
FIG. 7 is a partially enlarged perspective view showing another embodiment of the three-dimensional waterproof sheet of the present invention.
8 is a cross-sectional view showing an example of a wrap tape used for the three-dimensional waterproof sheet of FIG.
FIG. 9 is a process diagram showing how the three-dimensional waterproof sheet of FIG. 1 is attached on the roof.
FIG. 10 is a process diagram showing a state in which ventilation equipment is provided after the process of FIG. 9;
FIG. 11 is a perspective view showing another embodiment of the three-dimensional waterproof sheet of the present invention.
12 is a plan view showing the shape of a waterproof sheet for forming the three-dimensional waterproof sheet of FIG. 11. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Three-dimensional waterproof sheet, 15 ... Waterproof sheet, 16 ... Notch part, 21 ... Base plate, 22 ... Mounting base, 40, 60 ... Upper board, 41, 61 ... First side, 42, 62 ... First side piece 42a ... 1st piece, 42b ... 2nd piece, 43, 63 ... 2nd side, 44, 64 ... 2nd side piece, 44a ... 3rd piece, 44b ... 4th piece, 45, 65 ... 3rd side, 46, 66 ... 4th side, 47, 67 ... 3rd side piece, 48, 68 ... 4th side piece, 49, 69 ... 1st extension piece, 50, 70 ... 2nd extension piece, 51, 71 ... 3rd extension piece, 52, 72 ... 4th extension piece, 53 ... 5th extension piece, 54 ... 6th extension piece

Claims

It is a three-dimensional waterproof sheet for roof that is used when an installation is provided on the roof,
One waterproof sheet is cut, cut, bent, and three-dimensional molded, and at least a part of the waterproof sheet overlaps and is joined by an adhesive tape,
The shape that covers the mounting base to which the installation object is attached is three-dimensionally molded in advance ,
The mounting base is formed on a base plate, the three-dimensional waterproof sheet for roof extends on the base plate,
The waterproof sheet includes a rectangular upper plate, a first side piece continuous to the first side of the upper plate, a second side piece continuous to the second side opposite to the first side, and the first side. A third side piece and a fourth side piece continuous to the third side and the fourth side respectively intersecting with the first side piece, and a first extending piece is continuously formed outside the first side piece, A second extending piece is continuously formed outside the second side piece, a third extending piece is continuously formed outside the third side piece, and the outside of the fourth side piece. On the side, at least a part of the first side piece and the third side piece of the waterproof sheet in which the fourth extending piece is continuously formed is overlapped, and the first side piece and the fourth side piece At least a part of the second side piece and the third side piece are overlapped, and the second side piece and the fourth side piece At least a part of the first extension piece and the third extension piece are overlapped, and at least a part of the first extension piece and the fourth extension piece is overlapped. At least a part of the second extension piece and the third extension piece are overlapped, and at least a part of the second extension piece and the fourth extension piece are overlapped to form a three-dimensional shape. A three-dimensional waterproof sheet characterized by being made .

It is a three-dimensional waterproof sheet for roof that is used when an installation is provided on the roof,
One waterproof sheet is cut, cut, bent, and three-dimensional molded, and at least a part of the waterproof sheet overlaps and is joined by an adhesive tape,
The shape that covers the mounting base to which the installation object is attached is three-dimensionally molded in advance ,
The mounting base is formed on a base plate, the three-dimensional waterproof sheet for roof extends on the base plate,
The waterproof sheet includes a rectangular upper plate, a first side piece continuous to the first side of the upper plate, a second side piece continuous to the second side opposite to the first side, and the first side. A third side piece and a fourth side piece continuous to the third side and the fourth side respectively intersecting with the first side piece, and the first side piece is divided into a first piece and a second piece in the direction of the first side. The second side piece is divided into a third piece and a fourth piece in the direction of the second side, and a first extending piece is continuously formed outside the first piece. A second extending piece is continuously formed on the outer side of the two pieces, a third extending piece is continuously formed on the outer side of the third piece, and a second extending piece is formed on the outer side of the fourth piece. Four extending pieces are formed continuously, a fifth extending piece is continuously formed outside the third side piece, and a sixth extending piece is formed outside the fourth side piece. The first piece of the waterproof sheet formed by At least a part of the second piece is overlaid, at least a part of the third piece and the fourth piece are overlaid, at least a part of the first piece and the third side piece are overlaid, A part of the second piece and the fourth side piece are overlapped, at least a part of the third piece and the third side piece are overlapped, and at least a part of the fourth piece and the fourth side piece are overlapped. At least a part of the first extension piece and the fifth extension piece are overlapped, at least a part of the second extension piece and the sixth extension piece are overlapped, and the third extension piece At least a part of the extended piece and the fifth extended piece are overlapped, a part of the fourth extended piece and the sixth extended piece are overlapped, and the first extended piece and the second extended piece At least some of the protruding pieces are overlapped, and at least the third extending piece and the fourth extending piece are Department each other are stacked three-dimensional waterproof sheet, characterized by being formed in three-dimensional.

The three-dimensional waterproof sheet according to claim 1 or 2 , wherein an opening is formed in the upper plate.

The three-dimensional waterproof sheet according to any one of claims 1 to 3, wherein a wrap tape is mounted so as to cover an end of the cut portion.