JP4719175B2 - Construction structure of insulated roof - Google Patents

Construction structure of insulated roof Download PDF

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JP4719175B2
JP4719175B2 JP2007076430A JP2007076430A JP4719175B2 JP 4719175 B2 JP4719175 B2 JP 4719175B2 JP 2007076430 A JP2007076430 A JP 2007076430A JP 2007076430 A JP2007076430 A JP 2007076430A JP 4719175 B2 JP4719175 B2 JP 4719175B2
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heat insulation
heat insulating
roof
panel
insulation panel
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JP2008231865A (en
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透 滝沢
健一 江原
裕史 野中
一幸 西野
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Daikin Industries Ltd
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Description

本発明は外張り屋根断熱工法において、木質系の屋根断熱パネルを用いた断熱屋根の施工構造に関するものである。   The present invention relates to a construction structure of a heat insulating roof using a wooden roof heat insulating panel in an external roof heat insulating method.

従来から、住宅の外張り断熱工法と呼ばれている屋根断熱構造においては、この屋根断熱構造を構成する断熱パネルとして、例えば、特許文献１に記載されているように発泡ポリスチレン板や硬質ウレタンフォームなどの発泡プラスチック系断熱材などからなる板状断熱材が使用され、この板状断熱材を、垂木の上に合板等の屋根下地材を施工したのち、この下地材上に防湿層を介して敷設、固定し、さらに、この板状断熱材上に胴縁を左右方向に一定間隔毎に固着して隣接する胴縁間で通気層を形成し、該通気層を構造用合板（野地板）によって被覆すると共に、構造用合板上に防水層を介して屋根材を葺いてなる屋根断熱構造を構成している。
特開平７−２０７８５２号公報 Conventionally, in a roof heat insulation structure called a house outer insulation method, as a heat insulation panel constituting this roof heat insulation structure, for example, a foamed polystyrene plate or rigid urethane foam as described in Patent Document 1 A plate-like heat insulating material made of foamed plastic heat insulating material, etc. is used. After this plate-like heat insulating material is constructed on a roof base material such as plywood on a rafter, a moisture-proof layer is placed on this base material Laying and fixing, and further fixing the trunk edge on the plate-shaped heat insulating material at regular intervals in the left-right direction to form a ventilation layer between the adjacent trunk edges, and forming the ventilation layer as a structural plywood (field board) And a roof heat insulating structure in which a roofing material is wound on a structural plywood via a waterproof layer.
JP-A-7-207852

しかしながら、上記発泡プラスチック系断熱材などからなる板状断熱材は曲げ強度等の強度に劣るために、垂木間に直接、架設状態に施工すると施工時に足場として利用する場合等において折損する虞れがあり、そのため、垂木の上に構造用合板からなる屋根下地材を施工したのち、この下地材に該板状断熱材を施工する必要が生じて著しい手間と労力を要すると共にコスト高になるといった問題点がある。さらに、板状断熱材として木質繊維板のような透湿性を有する板材を使用しても、上記のように垂木の上に下地材として構造用合板を施工すると、合板自体は透湿性が十分でないために、木質繊維板の透湿性を効果的に発揮させることができなくなると共に合板の表面等に結露が発生する等の問題点がある。   However, since the plate-like heat insulating material made of the above-mentioned foamed plastic heat insulating material is inferior in strength such as bending strength, there is a risk of breakage when it is used as a scaffold at the time of construction if it is constructed in an erected state directly between rafters. Therefore, after constructing the roof base material made of structural plywood on the rafters, it becomes necessary to construct the plate-like heat insulating material on this base material, which requires significant labor and labor and increases the cost There is a point. Furthermore, even if a plate material having moisture permeability such as a wood fiber board is used as the plate-like heat insulating material, if the structural plywood is applied as a base material on the rafter as described above, the plywood itself is not sufficiently moisture permeable. For this reason, there is a problem that the moisture permeability of the wood fiber board cannot be exhibited effectively and dew condensation occurs on the surface of the plywood.

本発明はこのような問題点に鑑みてなされたもので、その目的とするところは、優れた強度を有すると共に良好な調湿機能を発揮する木質繊維板からなる断熱パネルを使用して屋根下地材を設けることなく垂木上に直接、施工を可能にし、さらに防湿層などを設けなくても表面に結露が発生し難く且つ施工性が良好で精度よく施工することができる断熱屋根の施工構造を提供するにある。   The present invention has been made in view of such problems, and the object of the present invention is to use a heat insulating panel made of a wood fiber board having excellent strength and exhibiting a good humidity control function as a roof base. Construction of a heat insulating roof that allows construction directly on the rafters without providing materials, and that prevents condensation on the surface without providing a moisture barrier, etc. In offer.

上記目的を達成するために、本発明の断熱屋根の施工構造は、請求項１に記載したように、垂木と、この垂木上に施工された断熱パネルと、この断熱パネル上に張設された防水シートと、防水シート上に葺かれた屋根材とからなる断熱屋根の施工構造において、上記断熱パネルは、密度が0.27ｇ／cm3 未満の平面横長長方形状の木質繊維板からなる断熱パネル主体の表面に密度が0.35ｇ／cm3 以上の木質板からなる補強板を貼着していると共に断熱パネル主体の長辺側の両端面下部に断面逆Ｌ字状の切欠段部を設けてなる一方、上記垂木上にこの垂木に直交して棟から軒先に向かって上記断熱パネルの幅に等しい間隔毎に雇い実を並列、固定してあり、さらに、上記断熱パネルの長さ方向を屋根の傾斜方向に対して直交する方向に向けてその両端面下部に設けている上記切欠段部を隣接する雇い実の上面に嵌め込むことにより、断熱パネルを順次、その対向端面を接合させた状態にして隣接する雇い実の上面間に架設すると共にこれらの断熱パネルを雇い実を介して上記垂木に支持させ、屋根下地材を設けることなく垂木上に断熱パネルをその下面を垂木間から下方に露出させた状態となるように施工していることを特徴とする。 In order to achieve the above object, the construction structure of a heat insulating roof according to the present invention includes a rafter, a heat insulation panel constructed on the rafter, and a stretched construction on the heat insulation panel as described in claim 1. In the construction structure of a heat insulating roof consisting of a waterproof sheet and a roof material wound on the waterproof sheet, the above heat insulating panel is mainly composed of a flat horizontally elongated rectangular wood fiber board with a density of less than 0.27 g / cm 3 A reinforcing plate made of a wood board having a density of 0.35 g / cm 3 or more is attached to the surface of the steel plate, and a notch step portion having an inverted L-shaped cross section is provided at the lower part of both end surfaces on the long side of the heat insulating panel. On the other hand, on the rafters, hired fruits are arranged in parallel and fixed at intervals equal to the width of the heat insulation panel from the ridge to the eaves perpendicular to the rafter, and the length direction of the heat insulation panel is further fixed to the roof. Both end faces in a direction perpendicular to the tilt direction By fitting the notch step portion provided at the lower part into the upper surface of the adjacent hired fruit, the heat insulation panels are sequentially installed between the upper surfaces of the adjacent hired fruit with their opposite end surfaces joined. The heat insulation panel is supported by the above rafters through hiring, and the heat insulation panel is constructed on the rafters so that the bottom surface of the rafters is exposed downward from between the rafters without providing a roof base material. And

このように構成した断熱屋根の施工構造において、請求項２に係る発明は、上記断熱パネル主体の表面に貼着した補強板における長辺側の両端面から上記雇い実の嵌合用切欠段部に至る断熱パネル主体の両端面にかけて相じゃくり実を形成していることを特徴とする。   In the construction structure of the heat insulating roof constructed as described above, the invention according to claim 2 is the above-mentioned fitting cut-out step portion from the long side end surfaces of the reinforcing plate attached to the surface of the heat insulating panel main body. It is characterized by the fact that it forms a peanut over both end faces of the main insulation panel.

請求項１に係る発明によれば、垂木上に施工した断熱パネルは、密度が0.27ｇ／cm3 未満の木質繊維板からなる断熱パネル主体の表面に密度が0.35ｇ／cm3 以上の木質板からなる補強板を貼着してなるものであるから、良好な断熱性を備えていると共に補強板によって全体が高い強度を有しており、その上、断熱パネル主体の長辺側の両端面下部に断面逆Ｌ字状の切欠段部を設けている一方、上記垂木上にこの垂木に直交して棟から軒先に向かって上記断熱パネルの幅に等しい間隔毎に雇い実を並列、固定しているので、断熱パネルの両端面下部に設けている上記切欠段部を隣接する雇い実に嵌め込むだけで断熱パネル同士の接合作業が極めて簡単且つ正確に行うことができ、従って、断熱屋根の施工が能率よく行えると共に、雇い実に切欠段部を係合させることによって隣接する断熱パネルの長辺側の対向端面を突き合わせ状態に容易に且つ精度よく接合させることができ、さらに、雇い実を垂木上に交差状に支持させて断熱パネルの接合端部をこの雇い実を介して垂木に支持させているので、この断熱パネル上に作業員等が乗っても踏み抜ける虞れがなくて施工時における安全性が高めることができ、断熱材等を支える合板等の屋根下地材が不要で垂木上に直接断熱パネルを施工してなる外張り断熱屋根構造を提供することができ、能率の良い施工を可能にすると共に材料コストの削減を図ることができる。 According to the invention according to claim 1, the heat insulation panel constructed on the rafter has a density of 0.35 g / cm 3 or more on the surface of the heat insulation panel mainly composed of wood fiber board having a density of less than 0.27 g / cm 3. since it is made by sticking the reinforcing plate made of, it has an overall higher strength by the reinforcement plate together with and a good thermal insulation properties, on its both end faces of the long sides of the insulating panel main A cut-off step with an inverted L-shaped cross section is provided at the bottom, while the fruit is arranged in parallel on the rafter at intervals equal to the width of the heat insulation panel from the ridge to the eaves perpendicular to the rafter. Therefore, it is very easy and accurate to join the insulation panels by simply fitting the notch steps provided at the bottom of both end faces of the insulation panels. Can be done efficiently, and hire a notch step By engaging, the opposing end faces on the long side of adjacent heat insulation panels can be joined together in an abutted state easily and accurately. Because the rafters are supported by the rafters through this hire, there is no risk of stepping on even if workers etc. get on this heat insulation panel, and safety at the time of construction can be improved. It is possible to provide a heat-insulated roof structure that does not require a roofing base material such as plywood to be supported and directly installs a heat insulation panel on the rafters, enabling efficient construction and reducing material costs. it can.

さらに、上記断熱パネルを構成している密度が0.27ｇ／cm3 未満の木質繊維板からなる断熱パネル主体は、その下面を垂木間から下方に露出させた状態で施工されているので、この断熱パネル主体の有する優れた調湿機能を効果的に発揮させて表面に結露が発生し難い断熱屋根構造を構成することができる。また、断熱パネルの両端部を雇い実を介して垂木に直接、支持させているので、構造が簡単にして施工が容易な断熱屋根の施工構造を提供することができる。 Furthermore, since the heat insulation panel main body comprising the wood fiber board having a density of less than 0.27 g / cm 3 constituting the heat insulation panel is constructed with its lower surface exposed downward from between the rafters, By effectively exhibiting the excellent humidity control function of the panel main body, it is possible to construct a heat-insulating roof structure in which condensation does not easily occur on the surface. Moreover, since the both ends of the heat insulation panel are directly supported by the rafters through employment, it is possible to provide a construction structure for a heat insulation roof that is simple and easy to construct.

また、請求項２に係る発明によれば、断熱パネル主体の表面に貼着した補強板における長辺側の両端面から雇い実の嵌合用切欠段部に至る断熱パネル主体の両端面にかけて相じゃくり実を形成しているので、隣接する断熱パネル同士が上述した雇い実による接続と共に相じゃくり実の雌雄実部の係合により一層確実にして精度のよい施工が可能となると共に、雇い実を介して接合した断熱パネルの対向端面間に隙間が生じても、互いに係合した相じゃくり実の雌雄実部によってその隙間を被覆した状態にすることができ、隙間が断熱パネルの表裏面間に連通するのを遮断して断熱欠損が生じ難い断熱屋根構造を提供することができる。 Further, according to the invention of claim 2 , the phase of the reinforcing plate adhered to the surface of the heat insulation panel main body from the both end faces on the long side to the both end faces of the heat insulation panel main body leading to the actual cut-out step for fitting. Since the chestnuts are formed, the adjacent insulation panels can be connected with the above-mentioned hires and the engagement of the male and female real parts can be made more reliable and more accurate. Even if there is a gap between the opposing end faces of the heat insulation panel joined via the gap, the gap can be covered with the male and female real parts that are engaged with each other. It is possible to provide a heat insulating roof structure in which communication between them is blocked and heat insulation defects are hardly generated.

本発明の実施の形態を図面について説明すると、図１は断熱屋根の施工構造を示す一部切欠簡略斜視図、図２はその縦断側面図、図３は施工された断熱パネル１の斜視図、図４はその縦断側面図であって、この断熱屋根の施工構造は、一定間隔毎に設けている垂木２と、この垂木２上に該垂木２に対して直交し且つ断熱パネル１の幅間隔毎に棟から軒先に向かって並列してなる雇い実３と、隣接する雇い実３、３の上面間に架設状態で配設されてその両端部下面に設けている嵌合用切欠段部４、４を上記隣接する雇い実３、３の対向する半部分にそれぞれ嵌め込むように係合させた状態で上記垂木２上に並列して施工されている上記断熱パネル１と、この並列断熱パネル１上に張設されている防水シート６と、該防水シート６上に桟木７を介して葺かれた屋根材８とから構成されている。   The embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway simplified perspective view showing a construction structure of a heat insulation roof, FIG. 2 is a longitudinal side view thereof, and FIG. 3 is a perspective view of a heat insulation panel 1 constructed. FIG. 4 is a longitudinal side view thereof, and the construction structure of the heat insulation roof includes a rafter 2 provided at regular intervals, and a width interval of the heat insulation panel 1 orthogonal to the rafter 2 on the rafter 2. A fitting notch step 4 provided on the bottom surface of both ends of the hiring fruit 3 that is arranged in parallel from the ridge to the eaves and the hiring fruit 3 and 3 adjacent to each other. The heat insulation panel 1 constructed in parallel on the rafter 2 in a state of being engaged so as to be fitted in the opposite half portions of the adjacent hires 3 and 3, respectively, and the parallel heat insulation panel 1 A waterproof sheet 6 stretched on the top, and a pier 7 on the waterproof sheet 6 Is constructed from wipe the roofing 8 Metropolitan Te.

垂木２上に並列状態で敷設される上記断熱パネル１は、密度が0.27ｇ／cm3 未満の木質繊維板からなる断熱パネル主体1Aの表面に密度が0.35ｇ／cm3 以上の木質板からなる補強板1Bを貼着してなるものであり、上記密度が0.27ｇ／cm3 未満の木質繊維板は木質繊維と結合剤を主成分とした軟質繊維板であって、例えば、JIS A 5905で規定されているタタミボードがある。 The heat insulation panel 1 laid in parallel on the rafter 2 is made of a wood board having a density of 0.35 g / cm 3 or more on the surface of the heat insulation panel main body 1A made of a wood fiber board having a density of less than 0.27 g / cm 3. Reinforcement board 1B is adhered, and the above-mentioned wood fiber board having a density of less than 0.27 g / cm 3 is a soft fiber board mainly composed of wood fibers and a binder, and, for example, according to JIS A 5905 There is a specified tatami board.

この木質繊維板からなる上記断熱パネル主体1Aの厚さは、必要とする断熱性能に応じて適宜に設定することができるものであり、例えば、断熱パネル１として必要とする熱抵抗値が0.8 m2・Ｋ／Ｗの場合であれば40mm厚程度となり、必要とする熱抵抗値が1.2 m2・Ｋ／Ｗの場合であれば55mm厚程度となる。また、一枚の木質繊維板によって断熱パネル主体1Aを構成しておいてもよいが、製造可能な木質繊維板の厚みは制限されるので、一定厚みを有する木質繊維板を２枚、或いはそれ以上の数枚を重ね合わせて互いに貼着することにより断熱パネル主体1Aに必要な厚みに形成している。 The thickness of the heat insulation panel main body 1A made of this wood fiber board can be appropriately set according to the required heat insulation performance. For example, the heat resistance value required for the heat insulation panel 1 is 0.8 m. In the case of 2 · K / W, the thickness is about 40 mm, and in the case where the required thermal resistance value is 1.2 m 2 · K / W, the thickness is about 55 mm. The heat insulation panel main body 1A may be constituted by a single wood fiber board, but the thickness of the wood fiber board that can be manufactured is limited, so two wood fiber boards having a certain thickness, or two The above-mentioned several sheets are overlapped and adhered to each other to form a thickness necessary for the heat insulating panel main body 1A.

この断熱パネル主体1Aの表面に貼着している補強板1Bとしての密度が0.35ｇ／cm3 以上の上記木質板は、木質繊維と結合剤を主成分とした木質繊維板や合板、パーティクルボードからなり、その厚みは断熱パネル１に必要な強度に応じて設定することができるが、その厚みが５mm未満であると必要な強度が確保し難くなり、20mm厚を超えると釘が打ち難くなったり取り回しがし難い等の施工上の問題点が生じるので、５〜20mm厚の木質繊維板を使用することが好ましい。また、このように断熱パネル主体1Aの表面に補強板1Bを一体に積層してなる断熱パネル１は、例えば、幅が455mm で長さが1820mmの図５に示すような横長長方形状に形成されている。 The above-mentioned wood board with a density of 0.35 g / cm 3 or more as the reinforcing board 1B attached to the surface of the heat insulation panel main body 1A is a wood fiber board, plywood or particle board mainly composed of wood fibers and a binder. The thickness can be set according to the strength required for the heat insulation panel 1, but if the thickness is less than 5 mm, it will be difficult to secure the required strength, and if it exceeds 20 mm, it will be difficult to hit the nail. It is preferable to use a wood fiber board having a thickness of 5 to 20 mm because it causes construction problems such as difficulty in handling. Further, the heat insulating panel 1 formed by integrally laminating the reinforcing plate 1B on the surface of the heat insulating panel main body 1A is formed in a horizontally long rectangular shape as shown in FIG. 5 having a width of 455 mm and a length of 1820 mm, for example. ing.

断熱パネル主体1Aを構成する数枚の木質繊維板同士の貼着や、断熱パネル主体1Aと補強板1Bとを貼着する接着剤としては、特に限定することなく適宜の接着剤を使用することができ、例えば、酢酸ビニル系やＥＶＡ系、アクリル系、ゴム系の接着剤等を挙げることができる。また、接着剤を断熱パネル主体1Aを形成する木質繊維板の接着すべき面や補強板1Bを形成する木質繊維板の接着すべき面に全面に亘って塗布してもよいが、これらの面にビード状、或いは点状に塗布して、この部分的な塗布によって木質繊維板と木質板を接着しておくことが好ましく、このように部分接着を施すことによって、接着剤層による木質繊維板間や木質繊維板と木質板間の透湿の阻害を低減して結露防止効果を向上させることができる。なお、断熱パネル１の表裏面、即ち、外部に露出している補強板1Bの表面と断熱パネル主体1Aの裏面とに防水剤や撥水剤を塗布しておいてもよい。   As an adhesive for adhering several wood fiber boards constituting the heat insulation panel main body 1A and for adhering the heat insulation panel main body 1A and the reinforcing plate 1B, an appropriate adhesive is used without any particular limitation. Examples thereof include vinyl acetate, EVA, acrylic, and rubber adhesives. Further, the adhesive may be applied over the entire surface to be bonded of the wood fiber board forming the heat insulation panel main body 1A and the surface to be bonded of the wood fiber board forming the reinforcing plate 1B. It is preferable to apply it in a bead shape or a dot shape, and to adhere the wood fiber board and the wood board by this partial application, and by applying the partial adhesion in this way, the wood fiber board by the adhesive layer It is possible to improve the dew condensation prevention effect by reducing the impediment to moisture permeation between the wood fiber board and the wood board. A waterproofing agent or a water repellent may be applied to the front and back surfaces of the heat insulating panel 1, that is, the surface of the reinforcing plate 1B exposed to the outside and the back surface of the heat insulating panel main body 1A.

さらに、断熱パネル主体1Aの長辺側の両端面における下部を断面逆Ｌ字状に切り欠くことによって角棒形状の上記雇い実３の嵌合用切欠段部４、４に形成している。この嵌合用切欠段部４は断熱パネル主体1Aの長辺側の両端面下部を一定幅でもって全長に亘り、断面逆Ｌ字状に切り欠くことによって一定幅を有する下向き係止面4aとこの係止面4aの内端から断熱パネル主体1Aの裏面に達した垂直面4bとからなる係合段部に形成されてあり、その幅（係止面4aの幅）は雇い実３の略１／２の幅に形成されていて、隣接する断熱パネル１、１の対向する嵌合用切欠段部４、４を雇い実３に嵌合させることにより、この雇い実３を介して断熱パネル１、１が互いに接合し、且つ、その対向端部が雇い実３を介して垂木２上に支持された状態で施工されている。 Further, the lower portions of both end surfaces on the long side of the heat insulating panel main body 1A are cut out in an inverted L-shaped cross section so as to be formed in the cut-out step portions 4 and 4 for the engagement fruit 3 having the above-mentioned square shape. The notch step 4 for fitting has a downward locking surface 4a having a constant width by cutting the lower end of both ends on the long side of the heat insulating panel main body 1A with a constant width over the entire length and by cutting it into an inverted L-shaped cross section. It is formed in the engaging step part which consists of the vertical surface 4b which reached the back surface of the heat insulation panel main body 1A from the inner end of the locking surface 4a, and the width | variety (width | variety of the locking surface 4a) is substantially 1 of the employment fact 3 Is formed in a width of / 2, and the adjacent insulation notches 4 and 4 of the adjacent insulation panels 1 and 1 are fitted to the employment fruit 3 , so that the insulation panel 1 through the employment fruit 3 1 is joined to each other, and the opposite ends thereof are supported on the rafter 2 through the hired fruit 3.

上記のように断熱パネル主体1Aの両端面下部を断面逆Ｌ字状に切り欠くことによって下向きに開口した切欠段部４、４を形成しておくことによって、雇い実３を介しての断熱パネル１、１同士の接合作業が雇い実３に嵌合用切欠段部４を上方から嵌め込むようにして容易に行え、垂木２上への断熱パネル１の施工が能率よく行えるばかりでなく、雇い実３を垂木２、２上に交差状に支持させて断熱パネル１、１の接合端部をこの雇い実３を介して垂木２に支持させることができ、その接合端部の曲げ強度が補強されて断熱パネル１に荷重がかかった時における端部の折損等の発生を防止することができる。 Thermal insulation of the end faces lower insulation panels principal 1A as described above in particular therefore should form a cutout step portion 4, 4 which opens downward by cutting the cross section inverted L-shape, through the employment real 3 The joining work between the panels 1 and 1 can be easily performed by fitting the cut-out step 4 for fitting into the hiring 3 from above, and not only the construction of the heat insulating panel 1 on the rafter 2 can be performed efficiently, but also the hiring 3 Can be supported on the rafters 2 and 2 in a crossing manner so that the joined ends of the heat insulating panels 1 and 1 can be supported by the rafters 2 via the hired fruit 3, and the bending strength of the joined ends is reinforced. Generation | occurrence | production of the breakage of the edge part, etc. when a load is applied to the heat insulation panel 1 can be prevented.

また、断熱パネル１における長辺側の両端面にはさらに施工性を向上させるために、上記図１、図３〜図５に示すように、上記嵌合用切欠段部４と共に相じゃくり実を設けている。即ち、断熱パネル１の補強板1Bの長辺側における一端部を全長に亘って一定幅だけ切除して、該補強板1Bの一端面1b1 の下端から断熱パネル主体1Aの一端部における上半部をこの補強板1Bの切除幅に相当する幅だけ外方に突出させることにより相じゃくり実の雄実部5aに形成していると共に、断熱パネル主体1Aの他端部における上半部を上記補強板1Bの切除幅に相当する幅だけ補強板1Bの他端部下面に沿って切除することにより、補強板1Bの他端面1b2 から該断熱パネル主体1Aの他端面1a2 が内方に凹んでなる相じゃくり実の雌実部5bに形成している。さらに、断熱パネル主体1Aの長辺側の両端面における下部を断面逆Ｌ字状に切り欠くことによって上記雇い実３の嵌合用切欠段部４、４に形成している。   Moreover, in order to further improve the workability on both end faces on the long side of the heat insulating panel 1, as shown in FIG. 1 and FIG. 3 to FIG. Provided. That is, one end portion on the long side of the reinforcing plate 1B of the heat insulating panel 1 is cut by a certain width over the entire length, and the upper half portion at one end portion of the heat insulating panel main body 1A from the lower end of the one end surface 1b1 of the reinforcing plate 1B. Is formed in the male solid part 5a of the ladle by projecting outward by a width corresponding to the cutting width of the reinforcing plate 1B, and the upper half part at the other end of the heat insulating panel main body 1A is By cutting along the lower surface of the other end of the reinforcing plate 1B by a width corresponding to the cutting width of the reinforcing plate 1B, the other end surface 1a2 of the heat insulating panel main body 1A is recessed inward from the other end surface 1b2 of the reinforcing plate 1B. It is formed in the female real part 5b of the peanut fruit. Further, the lower portions of both end surfaces on the long side of the heat insulating panel main body 1A are cut into an inverted L-shaped cross section so as to form the fitting cutout stepped portions 4 and 4 of the hire 3.

このように構成した断熱パネル１を上記垂木２上に施工するには、断熱パネル１の長さ方向を屋根の傾斜方向に直交する方向に向けて垂木２上に架設させながら屋根の傾斜方向に順次並列状態となるように敷設する際に、隣接する断熱パネル１、１の対向する嵌合用切欠段部４、４によって形成された矩形状の空間部を雇い実３に嵌め込み、且つ、対向する相じゃくり実の雌雄実部5a、5bを互いに嵌合させることにより、雇い実３を介して断熱パネル１、１をその対向端面を接合させた状態にして順次施工し、垂木２上に載っている断熱パネル１部分を垂木２に釘着する。しかるのち、この断熱パネル１を足場としてこれらの並列断熱パネル１上に防水シート６を張設し、該防水シート６上に桟木７を介して屋根材８を葺くことによって断熱屋根構造を構成する。 In order to construct the heat insulation panel 1 configured in this way on the rafter 2, the length direction of the heat insulation panel 1 is set on the rafter 2 in a direction perpendicular to the inclination direction of the roof, and in the inclination direction of the roof. When laying so as to be sequentially arranged in parallel, the rectangular space formed by the opposing fitting notch steps 4, 4 of the adjacent heat insulating panels 1, 1 is fitted into the actual fruit 3 and faces each other. The mating male and female real parts 5a and 5b are fitted to each other, so that the heat insulating panels 1 and 1 are sequentially constructed with the opposite end surfaces joined through the hired fruit 3, and placed on the rafter 2. 1 part of the heat insulation panel is glued to the rafter 2. After that, using this heat insulation panel 1 as a scaffold, a waterproof sheet 6 is stretched on these parallel heat insulation panels 1 and a roof material 8 is spread on the waterproof sheet 6 via a pier 7 to constitute a heat insulation roof structure. To do.

このように構成した断熱屋根構造を上述したように施工する際に、上記断熱パネル１にはその両端面下部に断面逆Ｌ字状に切り欠くことによって雇い実３に係合させる下向きに開口した矩形状の嵌合用切欠段部４、４を形成しているので、雇い実３を垂木２上に交差させながら施工してこの雇い実３上に断熱パネル１の端部を落とし込むようにしてその嵌合用切欠段部４を該雇い実３に嵌め込むことにより容易に且つ正確に架設状態に施工することができると共に、断熱パネル１の両端部の強度が雇い実３によって補強されて端部の折損等が生じ難い施工が可能となる。   When constructing the heat insulating roof structure thus configured as described above, the heat insulating panel 1 is opened downward to be engaged with the hiring fruit 3 by notching the lower part of both end surfaces in a reverse L-shaped cross section. Since the rectangular cut-out step portions 4 and 4 are formed, it is constructed so that the hired fruit 3 is crossed on the rafter 2 and the end of the heat insulating panel 1 is dropped onto the hired fruit 3. By fitting the cut-out step portion 4 for fitting into the hiring fruit 3, it can be easily and accurately installed in the erected state, and the strength of both ends of the heat insulating panel 1 is reinforced by the hiring fruit 3 so that the end portion Construction where breakage or the like hardly occurs is possible.

さらに、隣接する断熱パネル１、１が相じゃくり実の対向する雌雄実部5a、5b同士の嵌合によって接合しているので、これらの断熱パネル１、１における補強板1B、1Bの対向端面1b1 、1b2 間に隙間が生じても相じゃくり実の雄実部5aの上面に雌実部5bの下面が密接した状態で重なり合っているので、断熱パネル１、１の接合部における表裏面間の通気が完全に遮断され、断熱欠損をなくして優れた断熱機能を発揮する。従って、例えば、断熱パネル１、１の接合部をテープ等による隙間防止等の作業を行う必要はなく、施工コストを削減することができる。   Furthermore, since the adjacent heat insulation panels 1 and 1 are joined by fitting between the opposing male and female real parts 5a and 5b, the opposing end faces of the reinforcing plates 1B and 1B in these heat insulation panels 1 and 1 are combined. Even if a gap is generated between 1b1 and 1b2, the bottom surface of the female real part 5b overlaps with the upper surface of the male real part 5a, which is in contact with each other. Ventilation is completely cut off, eliminating heat insulation defects and providing excellent heat insulation function. Therefore, for example, it is not necessary to perform work such as gap prevention with a tape or the like at the joint portion of the heat insulating panels 1 and 1, and the construction cost can be reduced.

また、図６に示すように、雇い実３の長辺側上端における両端稜角部に突条部3a、3aを突設しておく一方、断熱パネル１の両端面下部に設けている上記嵌合用切欠段部４、４の隅角部に上記突条部3a、3aを係止させる係止溝部4c、4cを設けておけば、雇い実３と嵌合用切欠段部４、４との係合が一層確実に行われるばかりでなく、突条部3aが係止溝部4cに引っかかって、屋根の傾斜方向に断熱パネル１がズレようとするのを確実に防止することができると共に、対向端面を隙間なく接合させてさらに精度よく施工することができる。なお、雇い実３の材質は特に限定されることなく、木材や木質材料以外に、硬質合成樹脂や金属板からなるものであってもよい。   Further, as shown in FIG. 6, the protrusions 3 a and 3 a are provided at the corners of both ends at the upper end of the long side of the hired fruit 3, while the above-described fitting provided at the lower ends of both ends of the heat insulating panel 1. If the locking groove portions 4c and 4c for locking the protrusions 3a and 3a are provided at the corners of the cutout step portions 4 and 4, the engagement between the hired fruit 3 and the cutout step portions 4 and 4 for fitting is engaged. In addition to the fact that the protrusion 3a is caught by the locking groove 4c, it is possible to reliably prevent the thermal insulation panel 1 from slipping in the inclination direction of the roof and It can be joined with no gap and can be constructed with higher accuracy. In addition, the material of the employment fact 3 is not specifically limited, In addition to wood and a wood material, you may consist of a hard synthetic resin and a metal plate.

さらに、上記断熱パネル１の短辺側の端面にも相じゃくり実を設けておいてもよく、このように形成することによって、さらに施工が容易で正確に行えると共に長さ方向に隣接する断熱パネル１、１の対向する短辺側の端面同士も目隙を生じさせることなく接合させることができ、また、断熱パネル１の短辺側の端部を垂木２上に載るように設計しておいた場合にはこの垂木２上に相じゃくり実が位置して十分な接合強度を確保することができる。なお、断熱パネル１の端面に上記相じゃくり実に代えて本実を設けておいてもよい。   In addition, the end face on the short side of the heat insulating panel 1 may be provided with a layered fruit. By forming the heat insulating panel 1 in this way, it is possible to perform construction more easily and accurately and the heat insulating material adjacent in the length direction. The end faces of the short sides facing each other of the panels 1 and 1 can be joined together without causing gaps, and the end of the short side of the heat insulating panel 1 is designed to be placed on the rafter 2. In the case where it is placed, a splinter is located on the rafter 2 and a sufficient bonding strength can be secured. In addition, you may provide this real on the end surface of the heat insulation panel 1 instead of the above-mentioned phase.

また、以上の実施の形態においては、雇い実３の嵌合用切欠段部４と共に相じゃくり実を設けた断熱パネル１を示しているが、図７〜図９に示すように、相じゃくり実を設けることなく雇い実３の嵌合用切欠段部４を設けた断熱パネル1'であっても、本発明を満足させることができる。   Moreover, in the above embodiment, although the heat insulation panel 1 which provided the phase cut fruit with the notch part 4 for the fitting of the hiring actual 3 is shown, as shown in FIGS. The present invention can be satisfied even with the heat insulating panel 1 'provided with the fitting cut-out step 4 of the actual 3 without providing the actual.

即ち、この断熱パネル1'は、上記断熱パネル１と同じく、密度が0.27ｇ／cm3 未満の一定厚みを有する平面横長長方形状の木質繊維板からなる断熱パネル主体1A' の表面に、密度が0.35ｇ／cm3 以上の一定厚みを有する木質板からなる補強板1B' を貼着してなり、この断熱パネル主体1A' の長辺側の両端面における下部を断面逆Ｌ字状に切り欠くことによって雇い実３の嵌合用切欠段部4'、4'に形成している。詳しくは、この嵌合用切欠段部4'は上記断熱パネル１と同様に、該断熱パネル主体1A' の長辺側の両端面下部を一定幅でもって全長に亘り、断面逆Ｌ字状に切り欠くことによって一定幅を有する下向き係止面4aとこの係止面4aの内端から断熱パネル主体1A' の裏面に達した垂直面4bとからなる係合段部に形成されてあり、その幅（係止面4aの幅）は雇い実３の１／２の幅に形成されている。 That is, the heat insulating panel 1 ′ has the same density as that of the heat insulating panel 1 on the surface of the heat insulating panel main body 1A ′ made of a horizontally long rectangular wood fiber board having a constant thickness of less than 0.27 g / cm 3. Reinforcement plate 1B 'made of a wood board with a constant thickness of 0.35g / cm 3 or more is pasted, and the lower part at both end faces on the long side of this heat insulation panel main body 1A' is cut into an inverted L-shaped cross section. By doing so, it is formed in the cut-out step portions 4 ′ and 4 ′ for the mating fruit 3. In detail, the cut-out step 4 ′ for fitting is cut into a reverse L-shaped cross section over the entire length with a constant width at both ends of the long side of the heat insulation panel main body 1A ′ in the same manner as the heat insulation panel 1. It is formed in an engagement step portion composed of a downward locking surface 4a having a certain width by lacking and a vertical surface 4b reaching from the inner end of the locking surface 4a to the back surface of the heat insulating panel main body 1A ′. The (width of the locking surface 4a) is formed to be half the width of the hired fruit 3.

なお、このように形成している断熱パネル1'を使用した断熱屋根構造としては、相じゃくり実による接続構造以外は上記実施の形態と同じであるので、その詳細な説明を省略する。次に、本発明の断熱屋根構造に用いている断熱パネルの実施例と比較例とを示す。 As the heat insulating roof structure using insulating panel 1 'that are formed in this manner, since the non-connected structure according to the phase' s chestnut real are the same as the above embodiment, we omit detailed description thereof. Next, the Example and comparative example of the heat insulation panel used for the heat insulation roof structure of this invention are shown.

〔実施例１〕
密度が0.23ｇ／cm3 、厚さ20mm×幅455mm ×長さ1820mmの木質繊維板（タタミボード）を２枚と、密度が0.33ｇ／cm3 、厚さ８mm×幅455mm ×長さ1820mmの木質繊維板（シージングボード）を１枚、使用し、これらの木質繊維板の重ね合わせ面に酢酸ビニル接着剤をビード状に30ｇ／ｍ2 塗布したのち、貼り合わせて厚さ48mm×幅455mm ×長さ1820mmの断熱パネルを得た。この断熱パネルを荷重面積80mmφ、スパン455mm でもって荷重試験を行ったところ、載荷重が180kgfまで破壊しないことが確認できた。また、この断熱パネルの透湿度を測定したところ、15.4ｇ／ｍ・ｈ・mmHgであった。また、熱抵抗値を測定したところ、0.913 ｍ2k／Ｗであった。 [Example 1]
Density 0.23g / cm 3 , 20mm thick × 455mm wide × 1820mm long wood fiberboard (tatami board), density 0.33g / cm 3 , 8mm thick × 455mm wide × 1820mm long one wood fiber plate (sheathing board), and use, these after the wood fibers vinyl acetate adhesive overlapping surfaces of plates was 30 g / m 2 applied to the bead, bonding a thickness of 48 mm × width 455 mm × A thermal insulation panel with a length of 1820 mm was obtained. When a load test was conducted on this heat insulation panel with a load area of 80 mmφ and a span of 455 mm, it was confirmed that the loaded load did not break up to 180 kgf. The moisture permeability of this heat insulating panel was measured and found to be 15.4 g / m · h · mmHg. Moreover, it was 0.913 m < 2 > k / W when the thermal resistance value was measured.

〔実施例２〕
密度が0.23ｇ／cm3 、厚さ20mm×幅455mm ×長さ1820mmの木質繊維板（タタミボード）を２枚と、密度が0.33ｇ／cm3 、厚さ８mm×幅455mm ×長さ1820mmの木質繊維板（シージングボード）を１枚、使用し、これらの木質繊維板の重ね合わせ面に酢酸ビニル接着剤をビード状に30ｇ／ｍ2 塗布したのち、貼り合わせて厚さ48mm×幅455mm ×長さ1820mmの断熱パネルを得た。さらに、この断熱パネルにおける上記タタミボードからなる木質繊維板の四方端面における下部に雇い実の嵌合用切欠段部を形成した。この断熱パネルの嵌合用切欠段部を屋根の垂木上に直交して並列、固定している隣接する雇い実（ベイツガ材製）に係合させることによって良好に施工することができた。また、上記のように雇い実間上に架設状態で施工した断熱パネルの中央部及び雇い実上に支持されている両端部のそれぞれに、荷重面積80mmφ、スパン455mm でもって荷重試験を行ったところ、載荷重が180kgfまで破壊しないことが確認できた。また、この断熱パネルの透湿度を測定したところ、15.4ｇ／ｍ・ｈ・mmHgであり、熱抵抗値を測定したところ0.913 ｍ2k／Ｗであった。 [Example 2]
Density 0.23g / cm 3 , 20mm thick × 455mm wide × 1820mm long wood fiberboard (tatami board), density 0.33g / cm 3 , 8mm thick × 455mm wide × 1820mm long one wood fiber plate (sheathing board), and use, these after the wood fibers vinyl acetate adhesive overlapping surfaces of plates was 30 g / m 2 applied to the bead, bonding a thickness of 48 mm × width 455 mm × A thermal insulation panel with a length of 1820 mm was obtained. Further, a cut-out step portion for engagement was formed at the lower portion of the four-sided end face of the wood fiber board made of the above-mentioned tatami board in this heat insulating panel. It was possible to perform the construction well by engaging the notch portion for fitting of this heat insulation panel with the adjacent hired fruit (made of Batesuga) that is fixed in parallel and orthogonally on the rafter of the roof. In addition, a load test was conducted with a load area of 80mmφ and a span of 455mm on the center part of the heat insulation panel constructed on the hire space as described above and on both ends supported by the hire. It was confirmed that the loaded load did not break up to 180 kgf. Further, the moisture permeability of this heat insulating panel was measured and found to be 15.4 g / m · h · mmHg, and the thermal resistance value was found to be 0.913 m 2 k / W.

〔実施例３〕
密度が0.23ｇ／cm3 、厚さ20mm×幅455mm ×長さ1820mmの木質繊維板（タタミボード）を２枚と、密度が0.33ｇ／cm3 、厚さ12mm×幅455mm ×長さ1820mmの木質繊維板（シージングボード）を１枚、使用し、これらの木質繊維板の重ね合わせ面に酢酸ビニル接着剤をビード状に30ｇ／ｍ2 塗布したのち、貼り合わせて厚さ52mm×幅455mm ×長さ1820mmの断熱パネルを得た。さらに、密度が0.23ｇ／cm3 の上記木質繊維板（タタミボード）の四方端面における下部に雇い実の嵌合用切欠段部を形成すると共にこの嵌合用切欠段部の上部側における上記タタミボードからなる木質繊維板の上部に相じゃくり実を設けた。この断熱パネルの嵌合用切欠段部を屋根の垂木上に直交して並列、固定している隣接する雇い実（ベイツガ材製）に係合させることによってズレや隙間を生じさせることなく良好に施工することができた。また、上記実施例と同様に、同一条件で荷重試験を行ったところ、載荷重が180kgfまで破壊しないことが確認できた。また、この断熱パネルの透湿度や熱抵抗値も上記実施例と同じ値を示した。 Example 3
Density is 0.23g / cm 3 , 20mm thick x 455mm wide x 1820mm long wood fiberboard (tatami board), density is 0.33g / cm 3 , 12mm thick x 455mm wide x 1820mm long Use one wood fiber board (sieving board), apply 30g / m 2 of vinyl acetate adhesive in a bead shape on the laminated surface of these wood fiber boards, and paste them together to 52mm in thickness × 455mm in width × A thermal insulation panel with a length of 1820 mm was obtained. In addition, an actual mating notch step is formed in the lower part of the four-sided end face of the wood fiber board (tatami board) having a density of 0.23 g / cm 3 , and from the tatami board on the upper side of the mating notch step part. In the upper part of the wood fiberboard, a peanut is placed. By installing the insulation notch step of the heat insulation panel on the adjacent ripe (made of Batesga) that is fixed in parallel and perpendicular to the rafters of the roof, it can be constructed without any gaps or gaps. We were able to. Further, as in the above example, when a load test was performed under the same conditions, it was confirmed that the loaded load was not broken up to 180 kgf. Moreover, the water vapor transmission rate and thermal resistance value of this heat insulation panel showed the same value as the said Example.

〔比較例１〕
密度が0.23ｇ／cm3 、厚さ20mm×幅455mm ×長さ1820mmの木質繊維板（タタミボード）を２枚と、密度が0.45ｇ／cm3 、厚さ7.5mm ×幅455mm ×長さ1820mmの合板を１枚、使用して屋根用のパネルを得る際に、上記合板について実施例１と同じ荷重試験を行ったところ、破壊荷重が180kgfであった。同様に、透湿率の測定を行ったところ、0.87ｇ／ｍ・ｈ・mmHgであり、熱抵抗測定では0.11ｍ2k／Ｗであった。 [Comparative Example 1]
The density is 0.23g / cm 3 , 20mm thick x 455mm wide x 1820mm long wood fiberboard (Tatami board), the density is 0.45g / cm 3 , 7.5mm thick x 455mm wide x 1820mm long When the same plywood was used to obtain a roof panel, the same load test as in Example 1 was performed on the plywood. As a result, the breaking load was 180 kgf. Similarly, when the moisture permeability was measured, it was 0.87 g / m · h · mmHg, and the thermal resistance measurement was 0.11 m 2 k / W.

上記実施例と比較例とから明らかなように、実施例１の断熱パネルは、合板と同等の強度を有し、さらに、合板よりも透湿率が大きく熱抵抗も大きいことが確認できた。さらに実施例２及び実施例３の断熱パネルは、その幅方向の中央部においても実部においても合板と同等以上の強度を有し、合板よりも透湿率が大きく、熱抵抗も大きいことが確認できた。   As is clear from the above examples and comparative examples, it was confirmed that the heat insulation panel of Example 1 had the same strength as the plywood, and further had higher moisture permeability and higher thermal resistance than the plywood. Furthermore, the heat insulation panels of Example 2 and Example 3 have a strength equal to or higher than that of the plywood both in the center in the width direction and in the real part, and have a higher moisture permeability and higher thermal resistance than the plywood. It could be confirmed.

断熱パネルを施工した断熱屋根構造の一部切欠簡略斜視図。The partial notch simple perspective view of the heat insulation roof structure which constructed the heat insulation panel. その縦断側面図。The longitudinal side view. 施工された断熱パネルの斜視図。The perspective view of the constructed heat insulation panel. その縦断側面図。The longitudinal side view. 断熱パネルの簡略斜視図。The simplified perspective view of a heat insulation panel. 嵌合用切欠段部と雇い実との係合状態の変形例を示す縦側側面図。The longitudinal side view which shows the modification of the engagement state of the notch step part for fitting, and a hired fruit. 断熱パネルの別な形状を示す簡略斜視図。The simplified perspective view which shows another shape of a heat insulation panel. その施工状態を示す縦断側面図。The vertical side view which shows the construction state. その縦断側面図。The longitudinal side view.

１ 断熱パネル
1A 断熱パネル主体
1B 補強板
３ 雇い実
４ 嵌合用切欠段部
5a、5b 相じゃくり実部
６ 防水シート
８ 屋根材 1 Insulation panel
1A heat insulation panel
1B Reinforcement plate 3 Employment result 4 Notch step for mating
5a, 5b Phase-clad real part 6 Tarpaulin 8 Roofing material

Claims (2)

垂木と、この垂木上に施工された断熱パネルと、この断熱パネル上に張設された防水シートと、防水シート上に葺かれた屋根材とからなる断熱屋根の施工構造において、上記断熱パネルは、密度が0.27ｇ／cm3 未満の平面横長長方形状の木質繊維板からなる断熱パネル主体の表面に密度が0.35ｇ／cm3 以上の木質板からなる補強板を貼着していると共に断熱パネル主体の長辺側の両端面下部に断面逆Ｌ字状の切欠段部を設けてなる一方、上記垂木上にこの垂木に直交して棟から軒先に向かって上記断熱パネルの幅に等しい間隔毎に雇い実を並列、固定してあり、さらに、上記断熱パネルの長さ方向を屋根の傾斜方向に対して直交する方向に向けてその両端面下部に設けている上記切欠段部を隣接する雇い実の上面に嵌め込むことにより、断熱パネルを順次、その対向端面を接合させた状態にして隣接する雇い実の上面間に架設すると共にこれらの断熱パネルを雇い実を介して上記垂木に支持させ、屋根下地材を設けることなく垂木上に断熱パネルをその下面を垂木間から下方に露出させた状態となるように施工していることを特徴とする断熱屋根の施工構造。 In the construction structure of a heat insulating roof composed of a rafter, a heat insulating panel constructed on the rafter, a waterproof sheet stretched on the heat insulating panel, and a roofing material wound on the waterproof sheet, the heat insulating panel is , insulation panels with are attached to reinforcing plate density on the surface of the insulating panel entity density of from 0.27 g / cm 3 less than the planar oblong rectangular wood fiber board is made of 0.35 g / cm 3 or more wood board On the lower side of the long side of the main body, a cut-out step portion having an inverted L-shaped cross section is provided. On the rafter, at intervals equal to the width of the heat insulation panel from the ridge to the eaves perpendicular to the rafter. In addition, the cut-out steps provided at the lower portions of both end faces are arranged adjacent to each other so that the length direction of the heat insulation panel is perpendicular to the inclination direction of the roof. Insulation panel by fitting on the real top surface Are installed between the upper surfaces of adjacent hired fruits with their opposite end surfaces joined together, and these heat insulation panels are supported by the rafters through the hired fruits, and on the rafters without providing a roof base material. A construction structure of a heat insulating roof, wherein the heat insulating panel is constructed so that the lower surface is exposed downward from the rafters . 断熱パネル主体の表面に貼着した補強板における長辺側の両端面から雇い実の嵌合用切欠段部に至る断熱パネル主体の両端面にかけて相じゃくり実を形成していることを特徴とする請求項１に記載の断熱屋根の施工構造。 It is characterized in that a ladle is formed from both end faces on the long side of the reinforcing plate attached to the surface of the heat insulation panel main body to both end faces of the heat insulation panel main body leading to the hiring cut-out step portion The construction structure of the heat insulation roof of Claim 1 .
JP2007076430A 2007-03-23 2007-03-23 Construction structure of insulated roof Expired - Fee Related JP4719175B2 (en)

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JPS5622226U (en) * 1979-07-30 1981-02-27
JPS5641014U (en) * 1979-03-10 1981-04-16
JPH0849369A (en) * 1994-08-09 1996-02-20 Kaname:Kk Waterproof structure of horizontally roofed roof
JPH11241426A (en) * 1998-02-24 1999-09-07 Kanegafuchi Chem Ind Co Ltd Heat-insulation panel and heat-insulating structure using same
JP2004284217A (en) * 2003-03-24 2004-10-14 Daiken Trade & Ind Co Ltd Method for treatment for woody fiber board

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JPS5622226A (en) * 1979-07-28 1981-03-02 Pioneer Video Corp Movable mirror unit
JPS5641014A (en) * 1979-09-11 1981-04-17 Hitachi Cable Ltd Manufacture of composite wire

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JPS5641014U (en) * 1979-03-10 1981-04-16
JPS5622226U (en) * 1979-07-30 1981-02-27
JPH0849369A (en) * 1994-08-09 1996-02-20 Kaname:Kk Waterproof structure of horizontally roofed roof
JPH11241426A (en) * 1998-02-24 1999-09-07 Kanegafuchi Chem Ind Co Ltd Heat-insulation panel and heat-insulating structure using same
JP2004284217A (en) * 2003-03-24 2004-10-14 Daiken Trade & Ind Co Ltd Method for treatment for woody fiber board

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