JPH09235834A - Heat insulating roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by arranging multiple panel receiving materials in parallel in the girder direction at prescribed intervals on rafters, and arranging an airtight sheet and a heat insulating panel on them. SOLUTION: Multiple panel receiving materials 11 are arranged in parallel in the girder direction at prescribed intervals on rafters 101, and an airtight sheet 103 and a heat insulating panel 104 are arranged on the panel receiving materials 11 to form this heat insulating roof structure. Sheathing substrate furring strips 12 are fixed on the panel receiving materials 11 across the airtight sheet 103, and a sheathing roof board 105, a roofing 106, and roof materials 107 are executed on them. The panel receiving materials 11 serve as scaffolds when the sheet 103 and the panel 104 are installed, and the sheathing roof board 105 is not required to be doubly provided unlike the conventional outer heat insulating work. The sheet 103 prevents the cooled/heated air in the room from being leaked from the joint between the panels 104. The heat insulating property can be improved, execution can be facilitated, the cost can be reduced, a roof is made lightweight, and earthquake resistance can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating roof structure in which a wooden roof is provided with heat insulating property, airtight property, and air permeability.

[0002]

2. Description of the Related Art Recently, compared to the traditional ceiling insulation in which a glass wool mat is laid on the ceiling of the attic, it is easier to obtain high airtightness and heat insulation, and it is also excellent in heat protection, and the attic is used as a living room. Due to the increasing number of cases, the roof insulation, which gives the roof itself heat insulation properties, is drawing attention. Conventionally, as the roof heat insulation, the following inner heat insulation and outer heat insulation are known.

(1) In the internal heat insulation, a heat insulating material is arranged below the base plate, that is, inwardly. As a first example thereof, glass wool is packed from below between rafters to which the base plate is attached. I can list things. Further, as a second example, there is known one in which a heat insulating panel such as a foam polystyrene plate is inserted from below between rafters to which a base plate is attached and fixed with metal fittings (Japanese Patent Laid-Open No. 4-70441). In the heat insulating roof structure, the roofing and the roofing material are installed above the field board in the same manner as usual.

(2) In the external heat insulation, a heat insulating material is arranged above the base plate, that is, outside. As a first example, as shown in FIG. 5, the base plate attached to the rafter 101 is used. 10
An airtight sheet 10 such as a polyethylene film is provided above 2.
3 and a heat insulating panel 104 such as expanded polystyrene plate are sequentially laid, and further, a base plate 105 and a roofing 10
6 and roofing material 107 are known. The airtight sheet 103 improves the airtightness of the building, prevents the escape of cold air during cooling to improve the cooling efficiency, and prevents the escape of warm air during heating to improve the heating efficiency and prevent dew condensation. . In addition, as a second example of the outer heat insulation, as shown in FIG. 6, a base rafter 108 and a ventilation rafter 109 are further added to the structure of FIG. 5, and a ventilation layer is provided between the heat insulation panel 104 and the upper base plate 105. Forming 110 is contemplated. This ventilation layer 110 escapes the air warmed by the heat that enters from the side of the roofing material 107 that is heated by sunlight to the outside in the summer to assist the heat insulation by the heat insulation panel 104, and leaks from the room in the winter. By letting the moisture that comes out escape to the outside, the base plate 105 and roofing 10
This is to prevent dew condensation on the back surface of 6.

[0005]

However, the above conventional heat insulating roof structure has the following problems.

(1) In the case of the internal heat insulation, in any case, the heat insulating material is packed (inserted) from below between the rafters to which the base plate is attached, and fixed with metal fittings, etc. Since it is necessary to fix the heat insulating material with a metal fitting or the like in any posture, there is a problem in terms of workability.

(2) In the case of outside insulation, there is a problem in safety of work on the rafters, so work other than the roofing board 105 as a base material for roofing and roofing is carried out when laying an airtight sheet and a heat insulating panel. The field board 102 was attached on the rafter for the purpose of securing a scaffold. For this reason, there is a problem in that the ground boards are provided in duplicate and the cost increases. In particular, in the case of the heat-insulating roof structure with the ventilation layer formed as the second example, both rafters and field boards will be installed in duplicate, which not only increases the cost but also increases the roof weight. Then
There are also structural problems, especially in seismic design.

In view of the above circumstances, it is an object of the present invention to provide a novel heat insulating roof structure which can be installed with good workability and is advantageous in terms of cost and earthquake resistance.

Further, the present invention can more effectively suppress the rise in the room temperature of the uppermost room due to the solar radiation in the summer, and more reliably prevent the deterioration of the heat insulation performance and the decay of the body due to the dew condensation in the winter. It is an object of the present invention to provide a novel heat insulating roof structure that has a ventilation layer that can be solved in the above, can be installed with good workability, and is advantageous in terms of cost and earthquake resistance.

[0010]

The configuration of the present invention which has been achieved to achieve the above object is as follows.

That is, according to the present invention, a plurality of panel receiving members are provided in parallel on the rafter along the girder direction at predetermined intervals, and the airtight sheet and the heat insulating panel are provided on the panel receiving members. Is a heat-insulated roof structure.

The heat-insulating roof structure of the present invention further has the following feature: "The field subterranean hull is fixed on the panel receiving member with the airtight sheet interposed therebetween, and the heat insulation is provided between the field underground hulls. "A panel is arranged", "a field board is fixed on the field underground caisson", "a ventilation rafter is passed on the field underground caisson, and on the ventilation rafter" The base plate is fixed, and a ventilation layer is formed between the base plate and the heat insulating panel. "

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An example of a heat insulating roof structure of the present invention is shown in FIG. In FIG. 1, 11 is a panel support material, 12 is a field underground furrow, 101 is a rafter, 103 is an airtight sheet, 1
Reference numeral 04 is a heat insulating panel, 105 is a base plate, 106 is a roofing, and 107 is a roofing material.

In the heat insulating roof structure of the present invention, a plurality of panel receiving members 11 are provided on the rafter 101 in parallel along the girder direction at predetermined intervals, and on the panel receiving members 11, An airtight sheet 103 and a heat insulating panel 104 are arranged.

The panel receiving member 11 fixed on the rafter 101 functions as a receiving member when the airtight sheet 103 and the heat insulating panel 104 are laid, and also as a work scaffolding at that time.

The airtight sheet 103 prevents warm, high-humidity air in the room in winter from leaking from the joints of the heat insulating panel 104 to the side of the base plate 105 to cause dew condensation.
In summer, it prevents the escape of air in the air-conditioned room.

The airtight sheet 103 is not particularly limited as long as it is a flexible film or sheet-like material capable of blocking outflow of air in the room, but a synthetic resin film or a synthetic resin sheet is preferable. Specifically, it is preferable to use a film or sheet of polystyrene, polyethylene, polyvinyl chloride, polypropylene, polyvinylidene chloride, polyethylene terephthalate, or the like.
Usually, polyethylene sheets, which are advantageous in terms of airtightness, moisture resistance and cost, are often used.

The heat insulating panel 104 is not particularly limited as long as it is a plate having a high heat insulating property, but is preferably made of a synthetic resin foam plate. Examples of the heat insulation panel 104 made of this synthetic resin foam plate include polystyrene, polyethylene, polypropylene, polyvinyl chloride,
Examples include foamed plates of phenolic resin, etc., but extruded foamed plates with closed cells are preferable because they have excellent strength and small hygroscopicity, and particularly extruded expanded polystyrene with a foaming ratio of 20 to 50 times (trade name "Styrofoam"). : Dow Kako Co., Ltd.) is preferable.

In the heat insulating roof structure of the present invention, as shown in FIG. 1, it is preferable that the field underground hull 12 is fixed on the panel receiving member 11 with the airtight sheet 103 interposed therebetween. In the case of such a mode, the seam portions of the airtight sheets are provided on the panel receiving member 11 to which the field underground hull 12 is fixed, so that when the field underground hull 12 is fixed, the gap between the seam portions is fixed. The treatments can be performed simultaneously, and it is not necessary to separately perform a gap treatment using an adhesive tape or the like, and the work efficiency in airtight construction can be improved.

The field underground hull 12 also serves as a base material for fixing the field board 105, and its height is equivalent to the thickness of the heat insulation panel 104. In addition, the field underground 12
Are fixed on the panel receiving member 11 with a width W2 of the heat insulating panel 104, and the heat insulating panel 1 does not have a gap that becomes a heat insulating defect between the field underground hulls 12.
04 is arranged.

In the example of the structure shown in FIG.
The base plate 105 is fixed on the upper part of the roof 2, and the roofing 106 and the roof material 107 are installed on the upper part of the base plate 105 in the same manner as usual.

In the above-described heat insulating roof structure of the present invention, the field board 102 in the first example (see FIG. 5) of the conventional external heat insulation.
In place of the above, the panel support material 11 is a necessary and sufficient work scaffold when laying the airtight sheet 103 and the heat insulation panel 104.
Since it is provided, it is not necessary to double the base plate to be laid on the entire roof surface, which is advantageous in terms of cost, and it is possible to reduce the weight of the roof, which is an important factor for collapse of houses in recent earthquake disasters. It is also advantageous in structural design. Further, it is not necessary for the worker to work in an upwardly unnatural posture, and the problem of workability in the conventional internal heat insulation is solved.

In the heat insulating roof structure of the present invention shown in FIG. 1, a roof structure having high airtightness, cooling efficiency and heating efficiency is realized, but the room temperature of the uppermost room is more effectively raised by the solar radiation in summer. Another example of the heat insulating roof structure of the present invention that can suppress the problem of deterioration of heat insulating performance and decay of the body due to dew condensation in winter will be described with reference to FIG. In FIG. 2, the same reference numerals as those in FIG. 1 denote equivalent members, and 109 is a ventilation rafter, 1
Reference numeral 10 is a ventilation layer.

In the heat insulating roof structure of the present invention shown in FIG. 2, a ventilation rafter 109 is further added to the structure of FIG.
The ventilation layer 110 is formed between 04 and the base plate 105. That is, the ventilation rafters 109 are provided on the furrows 12 of the field underground, and the field board 10 is placed on the ventilation rafters 109.
By fixing 5, the base plate 105 and the heat insulation panel 104
Between the ventilation layer 11 corresponding to the height of the ventilation rafters 109
0 is formed. Therefore, in the winter season, moisture is removed from the heat insulating panel 104 through the seams and cuts of the airtight sheet 103.
Even if it invades into the side, it can be exhausted to the outside through the ventilation layer 110 to prevent dew condensation, and in the summer, the outside cold air is flowed into the ventilation layer 110 to prevent heat from entering. The effect can be enhanced. In this regard, FIG.
This will be described with reference to FIG.

FIG. 3 is an example of a schematic quadrangular diagram showing the entire ventilation structure in a wooden house using the heat insulating roof structure of the present invention shown in FIG. In addition, in FIG. 3, the flow of air is shown by the arrow.

As shown in FIG. 3, the air flowing into the back of the eaves from the ventilation layer 112 inside the exterior material 111 and the eaves ventilation holes 113 is formed between the base plate 105 and the heat insulation panel 104. Raise the ventilation layer 110 to raise the building ventilation holes 11
Ventilated from 4. That is, the ventilation layer 110 is always ventilated by the outside air. For this reason, even if warm air containing moisture leaks out from the attic side in the winter, this is caused by the outside air of the ventilation layer 110.
Since it is discharged from the outside, it is possible to prevent the occurrence of dew condensation in the roof part, and to prevent the deterioration of heat insulation performance and the decay of wood. Further, in the summer, since the outside air flows through the ventilation layer 110, the heat insulating panel 104 is less likely to be heated and a high heat protection effect can be obtained.

Also in the heat insulating roof structure of the present invention having the above-mentioned ventilation layer 110, as in the second example of the conventional external heat insulation (see FIG. 6) having the same ventilation layer, a field to be laid on the entire roof surface. It is not necessary to provide the ground plate twice, which is advantageous in terms of cost and also in terms of structural design. Also,
There is no need for the worker to work in an unnatural posture,
The problem of workability in the conventional inner insulation is solved.

The heat insulating roof structure of the present invention can be easily constructed as follows.

The panel receiving material 11 is installed on the rafter 101 at a predetermined pitch. The width W1 of the panel receiving member 11 is normally about 100 to 150 mm, and the pitch P
Is determined in consideration of the width W2 of the heat insulating panel 104 laid thereon, workability and safety as a scaffold, and can be usually about 300 to 600 mm. When the heat insulating panel 104 having a width W2 of, for example, 600 mm or more is used, the panel receiving member 11 is also arranged in the middle portion of the heat insulating panel 104, as shown in FIGS. 1 and 2.

Next, the airtight sheet 103 and the heat insulating panel 1
04 is laid on the panel receiving member 11. These are shown in FIG.
As shown in, it is also possible to use a pre-integrated one, which allows heat insulation and airtight construction to be performed simultaneously. The heat insulating panel 104 and the airtight sheet 103 can be integrated with a stopper or the like, but a method of applying hot melt adhesive on the surface of the airtight sheet or the heat insulating panel in advance and performing heat bonding is simple. is there.

When the airtight sheet 103 is integrated with the heat insulating panel 104, it is preferable to attach the airtight sheet 103 with the ears protruding in the side direction of the heat insulating panel 104 as shown in FIG. 4 for airtight construction. . Thereby, the airtight sheets of the adjacent heat insulation panels can be overlapped with each other, and the airtight construction can be reliably performed. The width w of the ears protruding in the side direction of the heat insulating panel 104 is 10
It is preferably 0 mm or more. Further, the direction in which the ears are projected can be any one of 1 to 4 directions.

The heat insulating panel 104 in which the airtight sheet 103 is previously integrated is arranged so that the edge in the girder direction rides on the panel receiving member 11, and the ears of the airtight sheet 103 are mutually placed on the panel receiving member 11. After overlapping, the field underground ground edge 12 is placed on the overlapped portion, and then the field underground ground edge 12 is fixed to the panel receiving member 11 with a nail or the like. At this time, the edge of the heat insulating panel 104 in the girder direction is brought into contact with the field subterranean furring strip 12 so that no gap is formed.

It is preferable to use the field subterranean girth 12 having a width smaller than the width W1 of the panel receiving member 11 by about 50 to 100 mm, and preferably fixed near the center of the panel receiving member 11. Thereby, the heat insulation panel 10
When the construction is performed so that the edge in the girder direction of 4 abuts on the field underground hull 12 so that no gap is created, the heat insulation panel 1
In No. 04, the portion from the edge to 25 to 50 mm is placed on the panel receiving material 11, so that the bending is prevented, and the heat insulating panel can be prevented from being chipped or cracked and the airtight sheet being torn.

Further, it is preferable that the height of the furring strip 12 of the open underground is equivalent to the thickness of the heat insulating panel 104. If the height of the field underground girth 12 is too high, a gap is opened between the below-mentioned base plate 105 or ventilation rafters 109 and the heat insulating panel 104,
The stability of the heat insulating panel 104 may be deteriorated, and it is necessary to separately fix the heat insulating panel with nails or the like. If the height of the field underground furring strip 12 is too low, there will be a problem in fixing the below-mentioned base plate 105 or ventilation rafter 109 to the field underground furring strip 12.

The synthetic resin foam plate such as extruded expanded polystyrene, which is suitable for the heat insulation panel 104, can be easily cut by a cutter or the like. Therefore, even if there is some variation in the spacing between the panel receiving members 11, It can be easily installed in a state in which there is no gap between the edge 12 and the heat insulating panel 104.

In the structure example shown in FIG.
After fixing the field board 105 on 2 and also in the structural example shown in FIG. 2, after fixing the ventilation rafter 109 on the field subterranean hull 12 and fixing the field board 105 on this, above it,
The roofing 106 and the roofing material 107 are constructed in the same manner as usual.

[0037]

As described above, according to the present invention,
The following effects are obtained. (1) A roof structure having high airtightness, cooling efficiency, and heating efficiency is realized without providing a double-layered base plate laid on the entire roof surface unlike the conventional external heat insulation, which is advantageous in terms of cost. The roof weight can be reduced, which is advantageous in structural design. Further, it is not necessary for the worker to work in an upwardly unnatural posture, and the problem of workability in the conventional internal heat insulation is solved. (2) In the case where the field subterranean furring strip 12 is fixed on the panel receiving member 11 with the airtight sheet 103 interposed therebetween, when the field subterranean ground furring strip 12 is fixed, the clearance treatment of the joint portion of the airtight sheet is performed at the same time. It is possible to improve work efficiency in airtight construction. (3) In addition to heat insulation by the heat insulation panel, airtight construction by the airtight sheet can be performed more reliably, preventing the escape of cool air during cooling to improve cooling efficiency and prevent escape of warm air during heating. Therefore, it is possible to improve the heating efficiency and prevent dew condensation more reliably. (4) The ventilation rafters 109 are passed over the field subterranean furring strip 12, and the floor plates 105 are fixed on the ventilation rafters 109.
In the case where the ventilation layer 110 corresponding to the height of the ventilation rafters 109 is formed between the heat insulating panel 104 and the heat insulating panel 104, it is possible to more effectively suppress the rise in room temperature of the uppermost room due to the solar radiation in the summer. At the same time, the problems of deterioration of heat insulation performance due to dew condensation in winter and rot of the skeleton are solved more reliably,
A highly durable insulated roof structure is realized. (5) With the above effects, the heat insulating roof structure can be constructed with extremely high reliability and in a shorter period of time and at low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a heat insulating roof structure of the present invention.

FIG. 2 is a partially cutaway perspective view showing an example of the heat insulating roof structure of the present invention having a ventilation layer.

FIG. 3 is a schematic quadrangular diagram for explaining ventilation by the heat insulating roof structure of the present invention.

FIG. 4 is a perspective view showing an example of a heat insulating panel integrated with an airtight sheet that can be suitably used for the heat insulating roof structure of the present invention.

FIG. 5 is a diagram for explaining a conventional heat insulating roof structure.

FIG. 6 is a diagram for explaining a conventional heat insulating roof structure having a ventilation layer.

[Explanation of symbols]

 11 Panel Receiving Material 12 Field Underground Furry Edge 101 Rafter 102 Field Board 103 Airtight Sheet 104 Heat Insulation Panel 105 Field Board 106 Roofing 107 Roofing Material 108 Base Rafter 109 Venting Rafter 110 Ventilation Layer 111 Exterior Material 112 Ventilation Layer 113 Eaves Ventilation 114 Building Ventilation hole

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area E04D 13/16 E04D 13/16 A

Claims (4)

[Claims] 1. A plurality of panel receiving members are arranged in parallel along a girder direction at predetermined intervals on a rafter, and an airtight sheet and a heat insulating panel are arranged on the panel receiving members. Insulated roof structure characterized by being 2. The field subterranean furring strip is fixed on the panel receiving member with the airtight sheet sandwiched therebetween, and the heat insulating panel is disposed between the field subterranean ground furring strips. Item 1. Insulated roof structure. 3. The heat insulating roof structure according to claim 2, wherein a field board is fixed on the furring strip of the field underground ground. 4. A ventilation rafter is passed over the furrow of the open field underground, and a field board is fixed on the ventilation rafter, and a ventilation layer is formed between the field board and the heat insulation panel. The heat insulating roof structure according to claim 2, wherein