JP2010071041A - Venting heat insulating roof composite panel and wooden external heat insulating roof structure using the panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a venting heat insulating roof composite panel capable of providing the roof panel with air permeability without increasing the thickness of the panel and protecting a heat insulating layer with a thermal insulation reflection layer to improve the heat insulating function of the panel. <P>SOLUTION: This roof composite panel provided with air permeability and a radiant heat elimination function is constituted by fixing vertical rails 2W, 2W' serving also as a sheathing roof board and rafter integrally at the center and on both sides of the heat insulating layer 2B, arranging a group of line grooves G and a thick wall 2T on a flat surface formed of the heat insulating layer 2B and the vertical rails 2W, 2W', arranging the thermal insulation reflection layer 2C on outer surfaces of the line groove G and the thick wall part 2T, and integrating and fixing a roof substrate member 2A with/on the heat insulating layer 2B from the upper face of the thermal insulation reflection layer 2C. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a breathable roof panel for constructing a roof of a wooden building into an outer heat insulating structure, and a heat insulating structure constructed with the roof panel, and belongs to the technical field of wooden house construction.

In order to make an energy-saving house even in a wooden building, a construction method for covering a roof with a breathable outer heat insulating coating has already been proposed, for example, as described in the conventional examples 1, 2, and 3.
FIG. 6 (A) is a conventional example 1, which is cited as Patent Document 1, and heat insulation for reducing heat addition between the roof rafters and heat addition to the heat insulation by radiant heat reflection action. The material is placed on top of each other.

That is, as shown in FIG. 6A, the conventional example 1 has a panel receiving material attached to the lower side of the roof rafter, and an upper surface sheet, an intermediate sheet, a lower surface on the heat insulating material supported by the panel receiving material between the roof rafters. Place the heat shielding material that integrates the sheet while maintaining the air space, and that has a radiant heat reflection effect, bend the protruding side edge of the top sheet of the heat shielding material along the rafter side, An air layer is also formed between the upper surface of the rafters and a windproof sheet and a roof covering material are fixed to the upper surface of the rafters.
And since the heat from the roof surface is released by the air flowing through the air layer with the heat shield reflecting the radiant heat, and the heat addition to the heat insulator is suppressed by removing the radiant heat from the heat shield, It can be made thinner than other roof insulation materials, and heat storage of the insulation materials can be reduced.

  Further, Conventional Example 2 shown in FIG. 6 (B) is a ventilated roof panel disclosed in Patent Document 2, which includes a rafter as a vertical member and a cross member as shown in FIG. 6 (B). An embossed heat insulating sheet in which a lattice frame is formed with a joint material in which a ventilation hole is arranged, and the lattice frame is filled with a heat insulating material, and a large number of protrusions are projected on the heat insulating material at intervals. Is a roof panel in which a base plate is fixed to the upper surface of the lattice frame, and allows air to flow into the panel through the gaps between the projections in contact with the lower surface of the base plate and the air vent of the joint material. It is.

Further, Conventional Example 3 shown in FIG. 6C is a field panel for supporting a roof tile disclosed in Patent Document 3, in which a heat insulating material is disposed on a lower side surface material, and an upper surface of the heat insulating material. The upper side material is disposed while holding the ventilation space, and the lower side material and the upper side material are integrated with both side edges and the central rafter.
JP 2003-171996 A JP-A-8-291600 Japanese Patent Laid-Open No. 5-230953

The ventilated roof structure of Conventional Example 1 shown in FIG. 6 (A) covers the upper surface of the heat insulating material with a heat shielding material having a radiant heat reflection function, so that the heat load on the heat insulating material and heat storage can be reduced, and the heat insulating material is also used. Although it has the advantage that it can be made thinner than conventional roof insulation, installation work of panel receivers on rafters, support work of insulation materials between rafters, placement work of heat insulation material on the top surface of insulation materials, heat insulation There are many fixing work of a wind-proof sheet and a roof base material which keeps an air layer on the material upper surface, and a use member and construction man-hours.
Moreover, since the heat shield is an easily displaceable honeycomb structure consisting of a lower sheet, an intermediate sheet, and an upper sheet, it is necessary to be careful to place it between rafters so as to achieve the desired radiant heat reflection effect. Therefore, the construction of a breathable roof is a cumbersome operation requiring manpower.

Moreover, since the ventilation roof construction method of the prior art example 2 shown in FIG. 6B employs a ventilation roof panel incorporating rafters, the construction of the roof at the construction site can be rationalized with fewer man-hours. The production itself is a lattice frame made of rafters and joints cut out in advance, filling the lattice frame with heat insulating material, and placing the insulation sheet on the top surface of the heat insulating material with projections formed by embossing In addition, there are many man-hours for manufacturing the panel itself by covering and fixing the base plate to the rafters, and the manufacture of the ventilation roof panel itself is complicated.
In addition, the joint material has a portion other than the vent hole that obstructs the air flow, and the projections of the heat insulating sheet obstruct the smooth air flow, thereby smoothing the air in the panel of the ventilated roof panel. Throughflow cannot be expected.
In addition, since a heat insulating sheet is placed on the upper surface of the necessary thickness of heat insulating material to form a ventilation structure, the panel thickness is increased, the roof thickness is increased, and the floor height is increased under the building height restriction. However, there is a problem that the living space is compressed.

Moreover, since the field panel of the prior art example 3 shown in FIG. 6 (C) is a rafter integrated body like the prior art example 2, the roof construction at the construction site can be rationalized, but the lower side material is a ceiling board. It is limited to buildings where the roof is exposed from the room.
Further, since the ventilation space is formed on the upper surface of the heat insulating material having a required thickness, the panel thickness is increased as in the case of the conventional example 2.
The present invention solves or improves the problems in construction and panel manufacturing of the ventilated and insulated roofs of the conventional examples 1 to 3 at a stroke, is easy to manufacture, and is applicable to a roof roof. By adopting a novel heat insulating and air permeable roof composite panel that can be prepared as an excellent and homogeneous product, a technique for rationally building a ventilation and heat insulating roof of a wooden building is provided.

  The roof composite panel of the present invention is, for example, as shown in FIG. 1, a roof composite panel 1 in which a heat insulating layer 2B and a roof base material 2A are layered and integrated through a heat-shielding reflective layer. The laminating surface 2S is provided with ventilation grooves G and thick portions 2T alternately and in parallel, and the vertical rails 2W and 2W having the same thickness as the heat insulating layer 2B are provided at the width center and both side edges. 'Is integrated, and the heat-insulating / reflective layer 2C is covered to the entire panel width AW from the vertical beam 2W, 2W' surface to the groove G surface and the thick part 2T surface on the surface 2S of the heat insulating layer 2B. The roof base material 2A covering the entire width of the panel from the top surface of the heat shielding / reflecting layer 2C is integrated with surface contact.

In this case, the heat insulating layer 2B is a plate-like heat insulating plate having a shape retaining property that can be integrally layered with the heat shielding reflective layer 2C on the roof base material 2A, and the heat insulating standard (1 The heat resistance value of the wooden airtight house in Hokkaido in the district should be 4.3 m ² k / w), and is a foamed plastic-based heat insulating material of JISA9511 such as polystyrene foam and rigid urethane foam, And an extruded polystyrene foam having a thickness T5 of 135 mm (thermal conductivity: 0.024 kcal / mh ° C. or less).

Further, the groove group G for ventilation may be cut and arranged with a cutter to a depth that guarantees a minimum upward flow of the air flow a and minimizes a heat insulation defect. G has a depth Gd of 15 mm, a width a1 of 45.5 mm, and is equal to the width a1 of the thick portion 2T.
In this case, since the arrangement area of the groove G group becomes 1/2 with respect to the total area of the heat insulating layer 2B, the heat insulation defect with respect to the layer thickness of the heat insulating layer 2B is 1/2 of the depth Gd of the groove G. It becomes a dimension.
Therefore, the arrangement area of the groove G having a depth that provides a predetermined ventilation function with respect to the heat insulating layer 2B having a predetermined reference thickness may be determined in consideration of a surface for suppressing heat insulation defects and a surface for air cooling.

Further, the vertical rails 2W and 2W ′ may be wood that maintains the function as a rafter and is integrated with the same thickness as the heat insulating layer 2B.
Further, the roof base material 2A may be a thin and rigid plate having the minimum strength, impact resistance, and workability as a roof base plate of the roof R. Typically, the roof base material 2A is lightweight (10 kg / m ² ), It is a structural plywood (JASS standard product) with a high strength (240 kgf / cm ² ) and a thickness of 12 mm.
Further, the heat shield reflection layer 2C is a heat shield reflection sheet whose surface has a radiant heat reflection function and can be bent and stretched from the upper surface of the thick portion 2T of the layer attachment surface 2S of the heat insulation layer 2B to the inner peripheral surface of the groove G. I just need it.

  Accordingly, in the roof composite panel 1 according to the present invention, the vertical rails 2W and 2W ′ have a rafter function, so that the roof construction to the roof structure is applied to the vertical rails 2W and 2W ′ from the upper surface to the main building 22B and the like. The heat insulation layer 2B of the roof panel 1 protects the interior from heat insulation, and the ventilation grooves G on the surface of the heat insulation layer 2B block heat from the roof surface. Since the heat reflection sheet 2C emits radiant heat, heat can be added to and stored in the heat insulating layer 2B, and heat can be reduced. Even if the groove G group is cut out in the heat insulating layer 2B having the required thickness, Compensates for heat insulation defects in the heat insulation layer due to notches.

  That is, the roof composite panel 1 of the present invention cuts a groove G having a required depth as a ventilation layer in the heat insulation layer 2B having a predetermined reference necessary thickness, and suppresses heat insulation defects of the heat insulation layer to the minimum. In order to compensate the heat insulation defect caused by the cutout of the groove G, the heat shielding reflective layer 2C compensates for the panel thickness thinner than the conventional type in which the ventilation layer is arranged on the heat insulation layer, and overheating from the roof surface, The roof panel can be suitably excluded to the outside, and has excellent workability with an integrated rafter.

In addition, as shown in FIG. 1, the roof panel 1 of the present invention has the same width of the groove G, the width of the thick portion 2T, and the width of the vertical beam 2W at the center of the heat insulating layer 2B. The width of the vertical beam 2W ′ at the layer side edge is preferably ½ of the width of the vertical beam 2W at the center.
In this case, since the vertical bars 2W and 2W ′ are integrated with the heat insulating layer 2B, the roof composite panel 1 is fixed to the main building 22B from the roof base material 2A of the panel 1 at the vertical bars 2W and 2W ′. Can be firmly fixed by driving a long screw (not shown) into the purlin 22B, purlin 22A, and eaves girder 21E. It becomes the same width as the vertical beam 2W, and the roof surface has uniform strength.

  Accordingly, since the groove G for ventilation has a uniform width over the entire surface of the roof surface with the same width as the non-grooved portion, that is, the thick portion 2T, the heat insulation defect of the heat insulating layer 2B due to the arrangement of the grooves G. However, it can be suppressed to 1/2 defect (standard: 7.5 mm) of the groove depth (standard: 15 mm), it becomes easy to compensate for the heat insulation defect in the heat-shielding reflective layer 2C, and the cooling function of the roof surface by ventilation, The heat and heat storage mitigation function for the heat insulation layer 2B is also equally distributed, and the protection from overheating of the roof surface and the outside heat insulation protection inside the house are leveled over the entire stretched roof surface of the panel 1 Can be achieved.

Further, in the roof composite panel 1 of the present invention, the heat shield reflection layer 2C is formed of 2 of the core material 20 in which the projections 20b are attached on the plastic resin sheet 20a as shown in FIGS. 3 (D) and 3 (E). The sheet is preferably a heat-reflective sheet 2C in which the projections 20b are opposed to each other and the aluminum foil 20c is layered on the surface of the front sheet 20a.
In this case, the heat-shielding reflection sheet 2C has a configuration in which the inside is in contact with each projection 20b group and an air layer is interposed between the projections 20b group and between the projections 20b. It is also possible to adopt Ramipack SD-W (trade name) manufactured by Sakai Chemical Industry Co., Ltd., which has a layer. The Ramipack SD-W (trade name) is lightweight (335 g / m ² ), has high heat shielding properties, high It has high strength (tensile strength of 3.9 N / mm), prevents heat radiation from entering, has a high cut rate of radiant heat, has excellent durability, and can be easily cut with a cutter or scissors.

  Accordingly, since the heat shielding reflective layer 2C has an air layer inside, the aluminum foil on the surface exhibits a radiant heat reflecting action, and the radiant heat in the groove G is released to the outside. In order to exert the heat insulating function by the intervening air layer, the groove G group having a depth Gd (standard: 15 mm) having a sufficient ventilation function is notched in the heat insulating layer 2B having a necessary thickness, and the groove G group is notched. Even if a heat insulation defect occurs, compensation of the heat insulation defect by the groove G group can be suitably achieved in summer and winter.

In addition, the heat shield reflection sheet 2C preferably has a thickness T2 of 8 mm and a heat insulating effect corresponding to the thickness of 5 to 7 mm of the heat insulating layer 2B.
The thermal barrier reflective layer 2C having a plate thickness T2 of 8 mm has a thermal conductivity of 0.032 kcal / mh ° C. (0.038 w / mk), and therefore has a thermal resistance of 0.25 kcal / mh ° C. (0.21 w / mk). Yes, extruded polystyrene foam (thermal conductivity: 0.024 kcal / mh ° C.) has a heat insulation effect of 6 mm, so that the upper surface of the vertical bars 2W and 2W ′ of the panel 1 and the upper surface of the thick part 2T are from the roof surface. In the groove G (standard depth: 15 mm), the radiant heat is reflected and the conduction heat is cut off.
Therefore, by properly selecting the arrangement area of the groove G group (standard: 1/2 of the total area), it is possible to completely compensate the heat insulation defect of the heat insulation layer 2B, and from the outside of the summer with the necessary ventilation layer. This makes it possible to obtain a roof panel suitable for both heat insulation and indoor insulation in winter.

  Accordingly, the heat shield reflection layer 2C exhibits a radiant heat reflection action and a conduction heat cutoff action in the groove G, and corresponds to a thickness of 5 to 7 mm of the heat insulating layer 2B on the upper surfaces of the vertical rails 2W and 2W ′ and the thick portion 2T. The roof composite panel 1 suppresses the increase in the panel thickness T3 (standard: 155 mm) and has a sufficient ventilation function to compensate for the heat insulation defect caused by the cutout of the groove G group of the heat insulation layer 2B. It will be equipped with.

In the roof composite panel 1 of the present invention, the heat insulating layer 2B is an extruded polystyrene foam plate having a thickness T3 of 135 mm, the depth Gd of the groove G is 15 mm, and the entire groove G The area is preferably ½ of the panel area.
According to the current heat insulation standard (Hokkaido area) in the next-generation energy saving standard announced in 1999, the heat resistance value of wooden airtight houses is 4.3 m ² k / w, and the required thickness for extruded polystyrene foam board However, the heat insulating layer 2B of the present application is 135 mm of an extruded polystyrene foam plate, and as shown in FIG. 1A, the total area of the equally distributed grooves G is 1/2 of the panel area. Since the depth Gd of the groove G is 15 mm, the heat insulation defect of the heat insulating layer 2B is 1/2 (7.5 mm) of the depth G of 15 mm (Gd).

Therefore, the heat insulation defect of the heat insulation layer 2B in which the groove G having a depth of 15 mm is equally distributed is 7.5 mm thick, and the heat insulation thickness including the heat insulation defect from the heat insulation layer 2B of 135 mm thickness is 127.5 mm (135 mm− Therefore, the construction standard thickness (125 mm) is satisfied.
Therefore, the roof composite panel 1 of the present invention satisfies the heat insulation standard even if a conventional aluminum foil layered film having only a radiant heat reflection function is used as the heat shield reflection layer 2C, without any heat insulation function. In addition, it effectively eliminates the radiant heat of the heat-shielding reflection layer 2C within the ventilation groove G group, exhibits a necessary heat insulation function in winter and summer, and enables energy saving in air conditioning.

In addition, the invention of the wooden exterior heat insulating roof structure of the present application is a wooden exterior heat insulating roof structure in which the roof composite panel 1 according to claim 1 of the present application is stretched, and as shown in FIG. Are arranged on the roof surface of the hut in such a way that the groove G group can be ventilated from the eave part 8 to the ridge part 7, and as shown in FIG. , Fixed to purlin 22A.
In this case, each panel 1 is fixed in the form of an abutting contact of the heat insulating layer 2B in the vertical connection of each panel 1, and in the contact form of the vertical rail 2W ′ on the side edge, and the conventional long connection. Screw, for example, a course thread (trade name) of Sanko Techno Co., Ltd., having a diameter of 5.5 mm and a length of 180 mm, is passed through the top surface of the roof base material 2A or the vertical rails 2W, 2W ′ that are also used as field rafters. What is necessary is just to drive in the eaves girder 21E, main building 22B, and purlin 22A.

Therefore, since the roof composite panel 1 can be prepared as a homogenous product for factory production and has the vertical rails 2W and 2W 'that also serve as the field rafters, the wooden exterior heat insulating roof structure is simply a roof assembly of the roof composite panel 1. It can be constructed by a simple driving and fixing work to the roof, and a homogeneous and reliable air-permeable outer insulation roof structure can be obtained.
For the roof surface on which the roof composite panel 1 is stretched, a conventional airtight tape 14A is stretched on the contact line of each panel 1, and the conventional waterproof sheet 9 and the roof are formed on the upper surface of the roof composite panel 1. The finishing material 10 may be stretched.

In the finished roof structure, two half-width vertical beams 2W ′ are combined at the panel left and right connection portions, so that the roof strength is uniform, and the heat insulating layer 2B is flush with the vertical beams 2W and 2W ′. Therefore, the insulation layer 2B is prevented from falling off the vertical rails 2W and 2W ′ by the purlin 22A, the purlin 22B, and the eaves girder 21E.
As shown in FIG. 5, the air flow a uniformly flows through the entire roof surface from the eave portion 8 to the ridge portion 7 as shown in FIG. 5, and in the groove G, the solar heat from the roof surface is shielded. The reflective layer 2C is emitted as radiant heat from the ridge 7 by the air flow a, and becomes an outer heat insulating roof that suppresses damage due to overheating of the roof surface and reduces heat storage of the heat insulating layer 2B.

  In the roof structure of the present invention, as shown in FIG. 3, the ridge panel 1A is prepared by projecting the roof base material 2A at the lower end so as to project the phase difference step d1, and the intermediate panel 1B is The roof base material 2A is prepared by allowing the upper end portion to enter the phase defect step d1, and the lower end portion to project the phase defect step d1, and the eaves panel 1C enters the roof base material 2A at the upper end portion. In addition, as shown in FIG. 5, the ridge panel 1A, the intermediate panel 1B, and the eaves panel 1C are phase-joint joined together, as shown in FIG. It is preferable that the lower end of the roof base material 2A of the panel 1C is fixed on the nose cover 23A, and the air inflow interval ad is disposed between the nose cover 23A and the panel heat insulating layer end face Ds.

In this case, as shown in FIG. 5, if the notch C23 for placing the end of the roof base material 2A is arranged on the upper surface of the nose cover 23A, the roof base material 2A and the upper surface of the nose cover 23A are flush with each other. The fixing work can be performed, and the installation work of the waterproof sheet 9 and the roof finishing material 10 on the upper surface of the panel 1 becomes easy.
Therefore, the upper and lower abutting connection of each roof panel 1 is caused by the horizontal contact interface hf ′ of the roof base material 2A and the horizontal contact interface hf of the heat insulation layer 2B being shifted from each other by the phase deficit step d1. The contact interface hf is protected by the roof base material 2A, and the treatment with the conventional airtight tape 14A is unnecessary at the horizontal phase chipped connection portion of each panel 1, and the airtight tape 14A is stretched only at the left and right connection portions between the panels 1. This will improve the workability of panel installation.

  Since the eaves part panel 1C protrudes from the lower end of the roof base material 2A by a large step d2 (standard: 30 mm), as shown in FIG. 5, a 1/2 dimension (standard: 15 mm) from the tip of the large step d2 protruding dimension. ) On the nasal cover 23A and nailing, the gap ad between the heat insulation layer lower end surface Ds and the inner surface of the nasal cover 23A is ½ dimension (standard: 15 mm) of the large step d2. The air inflow interval ad into the panel groove G group can be formed easily and properly by simply placing and fixing the panel 1, and the workability of roof construction is improved.

The roof composite panel 1 according to the present invention is placed on the purlin 22A, purlin 22B, and eaves girder 21E, and the panels 1 are placed in contact with each other, and the vertical beams 2W and 2W ′ are fixed to the roof with long screws. You can construct a wooden building roof with breathable outer insulation just by doing.
In the roof panel 1, the heat insulating layer 2B protects the indoors from heat insulation, and the ventilation groove G group on the surface of the heat insulating layer is discharged to the outside without adding radiant heat to the heat insulating layer 2B by the heat shielding reflective layer 2C. Therefore, the heat insulating layer 2B can suppress heating and heat storage, and exhibits an excellent outer heat insulating function.

In addition, since the heat shield reflective layer 2C protects the grooves G of the heat insulating layer 2B with heat insulation, the heat insulating layer 2B can suitably compensate for the heat insulation defect due to the arrangement of the grooves G in the heat shield reflective layer 2C. In addition, it is possible to arrange notches in the groove group G under the required thickness of the layer thickness T5 (standard: 135 mm) of the heat insulating layer 2B, and the roof composite panel 1 is a panel with a ventilation layer arrangement like a conventional roof panel. The panel thickness can be reduced without increasing the thickness.
Therefore, the roof composite panel 1 of the present invention can easily and uniformly construct a breathable outer heat insulating roof without increasing the roof thickness.

In addition, the roof composite panel 1 can be prepared as a homogenous product for factory production, and is equipped with vertical rails 2W and 2W ′ that also serve as field rafters. In the direction, the heat insulating layers are abutted against each other, and in the left-right direction, the abutting abutment of the vertical beam 2W ′ on the side edge portion is fixed to the roof of the roof.
In the finished roof structure, the air flow a flows uniformly over the entire roof surface from the eave portion 8 to the ridge portion 7, and in the groove G group provided with the heat shield reflection layer 2C on the peripheral surface, the roof Intrusion solar heat from the surface is emitted from the ridge 7 as radiant heat, damage due to overheating of the roof surface is suppressed, heat storage of the heat insulating layer 2B is also suppressed, and the roof lower surface is protected against heat insulation.

[Structure of roof composite panel (Figs. 1 and 2)]
The roof composite panel 1 is a panel in which a roof base material 2A is surface contact-integrated with a heat insulating layer 2B including a field rafter through a heat shield reflective layer 2C. FIG. 1 (A) shows the width of the panel 1 FIG. 1B is a partially cutaway enlarged view of FIG. 1A.
2 is an overall perspective view of the roof composite panel 1. FIG. 2A shows a ridge panel 1A, FIG. 2B shows an intermediate panel 1B, and FIG. The eaves panel is shown.

  That is, as shown in FIGS. 1 (A) and 1 (B), the cross-sectional structure of the roof composite panel 1 is a vertical beam 2W having a function of a field rafter and having a width a1 of 45.5 mm at the center of the width of the heat insulating layer 2B. A vertical beam 2W ′ having a width a2 of half width of 22.75 mm is integrated on both sides of the heat insulating layer 2B with the heat insulating layer 2B in such a manner that the lower surface and the upper surface are integrated with each other. The heat shielding reflective layer 2C is attached to the form covering the entire upper surface of the portion 2T, the groove G, and the vertical rails 2W and 2W ′, and the roof base having a thickness T4 (12 mm) from the upper surface of the heat shielding reflective layer 2C. The material is stretched with an adhesive 2D, and the roof base material 2A is casted and integrated with the nail n on the vertical rails 2W and 2W ′, and the heat shield reflective layer 2C has a thickness T2 (8 mm). A cutout Cw for receiving the heat shield reflective layer 2C is provided on the upper side surface of the vertical beam 2W, 2W ′, and the width a1 of the thick portion 2T of the heat insulating layer 2B, the vertical beam 2W The width a1 and the width a1 of the groove G are equal, the panel width AW is 910 mm, and the panel thickness T3 is 155 mm.

  As shown in FIG. 2, the ridge panel 1A, the intermediate panel 1B, and the eaves panel 1C have the same cross-sectional shape and the same width AW (910 mm). Has a heat insulation layer length BL of 1820 mm, and the roof base material 2A projects from the heat insulation layer 2B with the upper end (upper right edge in the drawing) being flush and the lower end projecting 20 mm (d1). Is to determine the length BL of the heat insulation layer 2B according to the dimensions from the roof ridge to the eaves. The standard type has a heat insulation layer length BL of 1820 mm, and the roof base material 2A is the heat insulation layer 2B. On the other hand, it enters 20 mm (d1) at the upper end and protrudes 20 mm (d1) at the lower end. The eaves panel 1C has a heat insulation layer length BL of 1820 mm, and the roof base material 2A is in contact with the heat insulation layer 2B. , 20 mm (d1) entering at the upper end, 30 at the lower end mm (d2) is protruding.

[Production of roof composite panels (Figure 3)]
3A and 3B are explanatory views of constituent members of the panel 1, wherein FIG. 3A is a perspective view of a roof base material 2A, FIG. 3B is a perspective view of a heat-shielding reflection layer 2C, and FIG. 3C is a perspective view of a heat insulation layer 2B. (D) is a plan view of the core material of the heat shield reflective layer 2C, and (E) is a cross-sectional view of the heat shield reflective layer 2C.
As shown in FIGS. 3D and 3E, the heat-insulating reflective layer 2C is a layer in which two core members 20 each having a projection 20b group having a diameter of 10 mm are attached to a plastic sheet 20a with the projection 20b group surfaces facing each other. A heat shielding / reflective sheet 2C having a thickness of 8 mm, which is integrally bonded and layered with aluminum foil on the front and back surfaces, is employed.
The sheet 2C is available from Sakai Chemical Industry Co., Ltd. as Ramipack SD-W (trade name).

As the heat insulating layer 2B, a heat insulating plate 2B of an extruded polystyrene foam plate (JISA9511) having a thickness T5 of 135 mm is prepared with a width of 409.5 mm (BW) and a length of 1820 mm (BL). A groove G group having a width of 61 mm and a depth Gd of 15 mm is cut and disposed between the thick portions having a width of 29 mm.
Further, as shown in FIG. 1 (B), a wood vertical beam 2W having a width of 45.5 mm and a thickness of 135 mm and a vertical beam 2W ′ having a width of 22.75 mm and a thickness of 135 mm are shielded on the upper half side surface. A cutout Cw with a width of 8 mm for inserting the heat reflecting layer 2C is prepared by machining, and a heat insulating plate 2B is bonded and fixed to both sides as shown in FIG. The width AW shown in FIG. 3 (C) is obtained by bonding and fixing the half-width vertical beam 2W ′ on both sides of the frame, integrating the vertical beams 2W and 2W ′ with the heat insulating plate, and providing the upper surface with the groove G cutting. A heat insulating layer 2B having a length of 910 mm and a length BL of 1820 mm is formed.

Further, as shown in FIG. 3B, the heat shield reflective layer 2C is provided with a heat shield reflective layer 2C having a width AW of 910 mm and a length BL of 1820 mm which is bent and shaped so as to match the irregularities on the upper surface of the heat insulating layer 2B. prepare.
Next, as shown in FIG. 1 (B), an adhesive 2D is applied to the upper surface of the vertical rails 2W and 2W ′, the side surfaces and the bottom surface of the groove G of the heat insulating layer 2B, and the heat shield reflection is formed by bending. The layer 2C is abutted and bonded to the upper surface of the heat insulating layer 2B to obtain a heat insulating layer 2B having a length BL of 1820 mm and a width AW of 910 mm and having a heat shield reflective layer 2C layered thereon.
And as the roof base material 2A, a light-weight (10 kg / m ² ), high strength (240 kgf / cm ² ), 12 mm thick structural plywood (JASS standard product) with the same width (910 mm) as the heat insulating layer 2B prepare.

  Next, as shown in FIG. 2, the ridge panel 1A has the roof base material 2A with the heat insulation layer 2B having a top end flush with the heat insulation layer 2B and a lower end projecting d1 (20 mm). As shown in FIG. 1 (B), an adhesive 2D is applied to the upper surface of the reflective layer 2C, and the roof base material 2A is adhered and fixed. If necessary, the roof base at the vertical rails 2W and 2W ′ of the heat insulating layer 2B. The material 2A is fixed to the vertical rails 2W and 2W ′ with the nail n to obtain the roof composite panel 1A for the ridge.

Similarly, the intermediate panel 1B includes the heat insulation layer 2C having a heat shielding / reflective layer 2C in which the roof base material 2A enters the heat insulation layer 2B by d1 (20 mm) at the upper end and d1 (20 mm) at the lower end. 2B is integrally fixed, and the roof composite panel 1B for intermediate parts is obtained.
Similarly, the eaves part panel 1C includes the roof base material 2A with respect to the heat insulating layer 2B, d1 (20 mm) at the upper end and d2 (30 mm) protruding at the lower end, and the heat shielding reflection layer 2C. The roof composite panel 1C for eaves is obtained by integrally fixing with the heat insulating layer 2B.

[Tensioning of roof composite panels (Figs. 4 and 5)]
FIG. 4 (A) is a partially cutaway perspective view of a roof structure in which a roof composite panel 1 is stretched on a roof with a roof, and FIG. 4 (B) is a partially cutaway enlarged perspective view of a roof structure. FIG. 5 is a cross-sectional explanatory view of the roof structure.
As shown in FIG. 4A, the roof of the hut is constructed by a conventional method, and includes columns 21A, beams 22D, shed bundles 22C, purlin 22A, purlin 22B, and eaves girder 21E.

The roof composite roof has a roof composite panel 1A, 1B, 1C group on the purlin 22A, purlin 22B, and eaves girder 21E. The vertical direction is the abutting contact of the heat insulating layer 2B, and the horizontal side is the panel side. The panels 1A, 1B, and 1C are arranged in abutting contact with the vertical beam 2W ′ having a half width at the edge. Then, a long screw (course thread (trade name) of Sanko Techno Co., Ltd.) having a diameter of 5.3 mm and a length of 180 mm is driven into and fixed to the eaves girder 21E.
The long screw has five times the strength of steel round nails for woodwork of JIS A5508 (allowable shear strength: 70 kgf / piece), so the interval between the long screws can be widened, and the eaves 21E, purlin 22B, purlin 22A Splitting can be suppressed and workability is good.

Accordingly, in the stretched panels 1A, 1B, and 1C, the upper and lower abutting portions of the panels are phase-separated, and as shown in FIG. 5, the horizontal (lateral) abutting interface hf between the heat insulating layers 2B. Is displaced from the horizontal contact interface hf ′ between the roof base materials 2A and is protected by the roof base material 2A, so that the upper and lower contact portions of the panel 1 do not require an airtight tape process.
Further, since the left and right contact portions of each panel are abutting contact of the vertical beam 2W ′ of each panel whose side surfaces are flush, the center of the panel is abutted by the vertical beam 2W ′ having a width a2 (22.75 mm). The same width as the width a1 (45.5 mm) of the roof, the roof surface is arranged in a group of rafters (vertical beam) of equal width (45.5 mm), ensuring the uniformity of the roof strength.

Then, as shown in FIG. 4 (A), a conventional airtight tape 14A is attached to the left and right contact portions of the panel 1, that is, the vertical contact interface vf for airtight processing.
Further, the lower end of the eaves part panel 1C is placed in the notch C23 on the upper surface of the nose cover 23A with a half-length of 15 mm of the lower end protrusion d2 (standard: 30 mm) of the roof base material 2A, and nailing. Between the nasal concealment 23A and the panel heat insulating layer lower end surface Ds, a half-length (15 mm) ventilation interval ad of the lower end protrusion d2 is formed.

The roof finishing is a conventional technique, in which the waterproof sheet 9 and the roof finishing material 10 are arranged on the roof panel surface. In the ridge portion 7, the ridge base material 20C, the ridge ventilation material 20B, and the ridge material 20A are used in a conventional ventilation structure. And a structure in which the rising air flow a flowing in from the interval ad (15 mm) of the nose cover 23A is discharged from the ridge 7 through the panel groove G (depth Gd: 15 mm, width a1: 45.5 mm) To do.
Therefore, in the roof structure constructed in the present embodiment, since the vertical bars 2W and 2W ′ of the panel also serve as rafters, the extension of the panel group to the roof of the roof is fixed by the long screws at the vertical bars 2W and 2W ′. Therefore, since the heat shielding reflective layer 2C was disposed in the ventilation groove G, the ventilation structure roof with excellent heat insulation function was obtained without increasing the roof thickness.

[Others]
In the embodiment, the Lamipack SD-W (trade name) is used as the heat shield reflective layer 2C. However, the heat shield reflective layer 2C only needs to reflect the heat rays entering the groove G, so that the Lamipack SD is used. A sheet in which two core members 20 for -W (trade name) are laminated and integrated, and an aluminum foil is stuck only on the surface can also be used as a sheet having a heat shielding property and a heat insulating property and having the same effect.

Further, a conventional aluminum film layered on a plastic film is also effective for reflecting the heat rays in the groove G and discharging it as radiant heat.
In this case, since the aluminum film is a flexible thin sheet, it is not necessary to make the arrangement of the cutting width for the groove and the width for the remaining thick portion different from each other as in the embodiment. Further, the cutting width for the groove G and the width for the thick portion can be processed with the same width, and it is not necessary to arrange the cutout Cw for the heat shield reflection layer on the vertical rails 2W and 2W ′.

It is explanatory drawing of the roof composite panel of this invention, Comprising: (A) is a cross-sectional view, (B) is the elements on larger scale of (A). It is a perspective view of a roof composite panel, (A) is a panel for ridge parts, (B) is a panel for intermediate parts, (C) is a figure showing a panel for eaves parts. It is a structural member explanatory drawing of a roof composite panel, (A) is a perspective view of a roof foundation, (B) is a perspective view of a heat insulation reflective layer, (C) is a perspective view of a heat insulation layer, (D) is heat insulation. The top view of a reflective layer structure core material, (E) is sectional drawing of a heat-shielding reflective layer. It is use condition explanatory drawing of a roof composite panel, Comprising: (A) is a partially notched perspective view, (B) is a partially notched part expansion perspective view. It is a partially cutaway sectional view of the roof structure of the present invention. It is a prior art example, Comprising: (A) is a 1 part notch principal part perspective view of the prior art example 1, (B) is a partially notched perspective view of the prior art example 2, (C) is a perspective view of the prior art example 3. FIG.

Explanation of symbols

1 Roof composite panels (roof panels, panels)
1A Building panel (roof panel, panel)
1B Intermediate panel (roof panel, panel)
1C Eaves panel (roof panel, panel)
2A Roof base material 2B Heat insulation layer (heat insulation plate)
2C Heat shield reflective layer (heat shield reflective sheet)
2D Adhesive 2S Layering surface 2T Thick part 2W, 2W 'Vertical beam 7 Building 8 Eaves part 9 Waterproof sheet 10 Roof finishing material 14A Airtight tape 20 Core material 20a Plastic resin sheet (sheet)
20b Protrusion 20c Aluminum foil 20A Building material 20B Building ventilation material 20C Building base material 21A Pillar 21E Eaves girder 22A Purlin 22B Purlin 22C Shed bundle 22D Beam 22E Rolling stop 23A Nose cover a Air flow (air)
ad Interval Cw, C23 Notch DS Insulation layer lower end face G groove (groove for ventilation)
Gd groove depth hf, hf 'Horizontal contact interface (lateral contact interface)
n Nail R Roof vf Longitudinal contact interface wf Wooden frame

Claims (7)

  A roof composite panel (1) in which a heat insulating layer (2B) and a roof base material (2A) are layered and integrated with each other through a heat-shielding reflection layer, and the heat insulating layer (2B) is formed on the layering surface (2S). In addition, the ventilation groove (G) and the thick part (2T) are alternately provided in parallel, and the vertical beam (2W, 2W ′) and the layering surface (2S) of the heat insulating layer (2B) from the vertical beam (2W, 2W ′) surface to the groove (G) surface and the thick part (2T) surface. A breathable roof in which the thermal insulation reflection layer (2C) is disposed to cover the entire panel width (AW), and the roof base material (2A) covering the entire width of the panel from the upper surface of the thermal insulation reflection layer (2C). Composite panel.   The width of the groove (G), the width of the thick portion (2T), and the width of the vertical beam (2W) at the center of the heat insulating layer (2B) are equal, and the vertical beam (2W) on the side edge of the heat insulating layer The width | variety of ') is a roof composite panel of Claim 1 which is 1/2 of the width | variety of the vertical beam (2W) of a center part.   Two layers of the core material (20) in which the heat shielding reflection layer (2C) is provided with the projections (20b) group on the plastic resin sheet (20a) are layered so that the projection (20b) group surfaces face each other. The roof composite panel according to claim 1 or 2, wherein the roof composite panel is a heat-shielding reflection sheet (2C) in which an aluminum foil (20c) is layered on the surface of the sheet (20a).   The roof composite panel according to claim 3, wherein the heat-shielding reflection sheet (2C) has a thickness (T2) of 8 mm and has a heat insulating effect corresponding to a thickness of 5 to 7 mm of the heat insulating layer (2B).   The heat insulation layer (2B) is an extruded polystyrene foam plate having a thickness (T3) of 135 mm, the depth (Gd) of the groove (G) is 15 mm, and the total area of the groove (G) is the panel area. 5. The roof composite panel according to claim 1, which is 1/2 of the above.   A wooden exterior heat insulating roof structure in which the roof composite panel (1) according to claim 1 is stretched, wherein the roof composite panel (1) is formed into a groove (G) from the eaves part (8) to the ridge part (7). ) Outside the wooden frame, which is arranged on the roof of the hut so that it can be ventilated, and the vertical bars (2W, 2W ') of each panel (1) are fixed to the eaves spar (21E), main building (22B), purlin (22A) Upholstered roof structure.   The ridge part panel (1A) is prepared by causing the roof base material (2A) to protrude at the lower end part by projecting the phase gap (d1), and the intermediate part panel (1B) is provided with the roof base material (2A) at the upper end part. The phase gap step (d1) is made to enter and the phase gap step (d1) protrudes at the lower end portion, and the eaves part panel (1C) has the roof base material (2A) and the phase gap step (d1) at the upper end portion. ) And make a large step (d2) project at the lower end, prepare the ridge panel (1A), the intermediate panel (1B) and the eaves panel (1C) vertically and phase-joint The lower end of the roof base material (2A) of the eaves part panel (1C) is fixed on the nose cover (23A), and the air inflow interval (23) between the nose cover (23A) and the panel heat insulation layer end surface (Ds) ( The wooden exterior heat insulating roof structure according to claim 6, wherein ad) is disposed.

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