JP3232351U - Insulated roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating roof structure having heat insulating property and waterproof property, as well as a simple structure and workability. SOLUTION: The roof structure is formed on a main building 60, a field board 50 arranged on the main building and fixed to the main building by a fastener 30C, and a field board arranged on the field board and with respect to the field board. The heat insulating material 40 adhered by the adhesive, the waterproof sheet disposed on the heat insulating material and adhered to the heat insulating material by the adhesiveness of the rubber forming the waterproof sheet 20 via the undercoat primer, and the waterproof sheet. The fastener material does not extend in the thickness direction of the heat insulating material, including the metal roofing material disposed on the waterproof sheet and fixed to the waterproof sheet by the adhesiveness of the rubber lined with the metal roofing material 10. Since there is no structural material extending in the thickness direction of the heat insulating material, there is no thermal bridge across the heat insulating material. Therefore, it is not easily affected by temperature changes in the external environment and has extremely high heat insulating properties. Further, since the heat insulating material is adhered and fixed on the field board, it is easy to form the heat insulating material thickly to improve the heat insulating property. [Selection diagram] Fig. 3

Description

The present invention relates to a heat insulating roof structure having excellent heat insulating properties, waterproof properties, and workability.

Conventionally, many heat insulating roof structures using metal roofing materials and heat insulating materials have been proposed (see, for example, Patent Documents 1 to 4). A typical example of such a heat insulating roof structure is shown in FIG. FIG. 1 (a) is a schematic cross-sectional view of an example of a conventional heat-insulated roof structure cut vertically in the roof inclination direction, and FIG. 1 (b) is a cross-sectional view of FIG. 1 (a) orthogonal to the cross section. It is a schematic cross-sectional view cut by AA'in the direction. In FIG. 1, 10 is a metal roofing material, 10A is a hanger, 10B is a fastener, 20 is a tarpaulin, 30A is a metal rafter, 40 is a heat insulating material, 50 is a field board, 50A is a fastener, and 60 is C. It is a main building made of shaped steel.

In the heat insulating roof structure of FIG. 1, generally, the field board 50 is arranged on the purlin 60, and then the metal rafters 30A are fixed to the purlin 60 together with the field board 50 with the fastener 50A, and then the heat insulating material 40 is attached to the adjacent metal. It is installed between the rafters 30A, the waterproof sheet 20 is placed on the heat insulating material 40, and the hanger 10A engaged with the metal roofing material 10 is fastened to the upper part of the metal rafters 30A with the fastener 10B. ..

However, in this heat insulating roof structure, since a structural material such as a metal rafter exists in the thickness direction of the heat insulating material, the heat insulating material is not arranged in this portion, and the heat insulating property is not sufficient. In addition, in this heat-insulated roof structure, the presence of metal rafters forms a thermal bridge between the metal roofing material, the hanger, the fastener, the metal rafter, the fastener, and the purlin, so that the purlin is at the temperature of the external environment. There was a problem that the heat insulation inside the room was insufficient and dew condensation was likely to occur in the purlin due to the influence of the change.

On the other hand, a heat insulating roof structure has been proposed in which the positions of the heat insulating material and the field board are changed without using a structural material such as a metal rafter in the thickness direction of the heat insulating material. FIG. 2 is a schematic cross-sectional view of an example of such a heat insulating roof structure cut vertically in the roof inclination direction. In FIG. 2, 10 is a metal roofing material, 20 is a tarpaulin, 30B is a fastener material, and 40 is a heat insulating material. , 50 is a field board, and 60 is a main building made of C-shaped steel.

In the heat insulating roof structure of FIG. 2, in general, the heat insulating material 40 is placed on the main building 60, the field board 50 is further placed on the heat insulating material 40, and the heat insulating material 40 and the field are placed on the main building 60 by the long fastener 30B. After fixing the main plate 50 together, the waterproof sheet 20 is placed on the field plate 50, and then the metal roofing material 10 is adhesively fixed.

Since this heat insulating roof structure does not have a structural material such as a metal rafter extending in the thickness direction of the heat insulating material, heat transfer from the outside to the purlin is less than that of the heat insulating roof structure shown in FIG. However, since it exists on the back surface of the non-insulated field board, there is a problem that dew condensation is likely to occur on the back surface of the heat insulating material. In addition, since the field board and the main building are directly connected by a fastener material, heat is transferred to the main building through the fastener material, and there is a problem that dew condensation is likely to occur in the main building. Furthermore, in order to fix the fastener material to the purlin by penetrating or crossing the heat insulating material from above the field board, it is necessary to use a fastener material having a total thickness of the field board and the heat insulating material, or shear stress. As a result, there are problems that the fastener material is damaged, the holding force is weakened, the heat insulating material is faded, and the head of the fastener material penetrates inside. In addition, there is a problem that a thick heat insulating material cannot be used when trying to avoid the use of a long fastening material.

Japanese Unexamined Patent Publication No. 5-280157 Jikkenhei 6-6559 Gazette Japanese Unexamined Patent Publication No. 8-246609 Japanese Unexamined Patent Publication No. 2002-61339

The present invention was devised to solve the problems of the prior art, the purpose of which is to provide a heat insulating roof structure having reliable and permanent heat insulation and waterproofness, as well as simple structure and workability. To do.

As a result of diligent studies to achieve this purpose, the present inventor considered the thickness of the heat insulating material by fixing the field board to the purlin with a fastener and fixing the heat insulating material to the field board with an adhesive. It is no longer necessary to use structural materials such as long fasteners and metal rafters that cross the heat insulating material, and by covering the field board with heat insulating material, it can be made less susceptible to temperature changes in the external environment, and to the purlin. By basically adopting the adhesive method except for fixing the fastener material of the field board, there is no transfer point of heat and water from the external environment, and high heat insulation and waterproofness can be effectively achieved. We found such things and reached the completion of this invention.

That is, the present invention has the following configurations (1) to (4).
(1) A main building, a field board disposed on the main building and fixed to the main building with a fastener, and a field board disposed on the field board and attached to the field board by an adhesive. On the bonded heat insulating material, a waterproof sheet disposed on the heat insulating material and adhered to the heat insulating material by adhesion of rubber forming a waterproof sheet via an undercoat primer, and on the waterproof sheet. A heat insulating roof structure including a metal roofing material that is arranged and fixed to the waterproof sheet by adhesion of rubber backed by a metal roofing material, wherein the fastening material is in the thickness direction of the heat insulating material. A heat insulating roof structure characterized in that it does not extend to the roof and that there is no structural material extending in the thickness direction of the heat insulating material.
(2) The undercoat primer is a butyl rubber-based primer, the waterproof sheet is a non-vulcanized butyl rubber-based sheet, and the rubber lined with the metal roofing material is a non-vulcanized butyl rubber. The insulated roof structure according to (1).
(3) The heat insulating roof structure according to (1) or (2), wherein the heat insulating material is a foamed plastic foam board.
(4) The heat insulating roof structure according to any one of (1) to (3), wherein the heat insulating material is one in which a plurality of heat insulating materials are bonded and laminated by an adhesive.

The heat insulating roof structure of the present invention is not provided with fasteners such as nails and screws extending in the thickness direction of the heat insulating material, and is not provided with structural materials such as metal rafters extending in the thickness direction of the heat insulating material. There is no thermal bridge across the material, so it is not easily affected by temperature changes in the external environment, and the heat insulation is extremely high. Further, since the heat insulating material is adhered and fixed on the field board, it is easy to form the heat insulating material thickly to improve the heat insulating property.

Further, the heat insulating roof structure of the present invention does not fix the metal roofing material with a fastener such as a nail or a screw, but adheres and fixes the metal roofing material with an adhesive or rubber adhesive, so that the metal roofing material is fixed without making a hole in the waterproof sheet. And the double waterproof function of the waterproof sheet can be effectively exhibited. Further, since the fixing between the constituent parts is basically performed by adhesive or rubber, other than fixing the field board to the purlin with the fastener material, it is extremely easy to construct the heat insulating roof structure.

FIG. 1 shows an example of a conventional heat-insulated roof structure, (a) is a schematic cross-sectional view cut vertically in the roof inclination direction, and (b) is a direction orthogonal to the cross section of the cross-sectional view of (a). It is a schematic cross-sectional view cut vertically in.

FIG. 2 is a schematic cross-sectional view of another example of the conventional insulated roof structure cut vertically in the roof inclination direction.

FIG. 3 is a schematic cross-sectional view of an example of the heat insulating roof structure of the present invention cut vertically in the roof inclination direction.

The embodiment of the heat insulating roof structure of the present invention and the construction method thereof are shown below with reference to the drawings, but the present invention is not limited thereto.

FIG. 3 is a schematic cross-sectional view of an example of the heat insulating roof structure of the present invention cut vertically in the roof inclination direction. In FIG. 3, 10 is a metal roofing material, 20 is a waterproof sheet, 30C is a fastener material, 40 is a heat insulating material, 50 is a field board, and 60 is a purlin. Hereinafter, each component of the heat insulating roof structure of FIG. 3 will be described in order from the lower side (indoor side) to the upper side (external environment side).

The purlin 60 is a structural member arranged at regular intervals to withstand the roof's own weight, snow cover, construction load, wind load, and the like to support the entire roof structure, and conventionally known ones can be used. The purlin 60 can be made of metal, wood, or reinforced concrete (RC), but in the present invention, a metal one is preferable, and a C-shaped steel is particularly preferable.

The field board 50 is arranged and fixed on the purlin 60, and is a plate-shaped structural member that receives and supports the roof structure above it with a surface. As the field board 50, conventionally known ones such as cedar board, field plywood, and fireproof field plywood can be used. In the present invention, the field board 50 is preferably a refractory field plywood, and particularly a hard wood piece cement board, a hard wood wool cement board, a structural plywood, or a combination thereof.

Conventionally known screws, nails, and the like can be used as the fastener material 30C, but in the present invention, metal screw screws are particularly preferable. The fastening material 30C is for fixing the field board 50 to the purlin 60, so that the heads of the fasteners 30C such as screws are flush with the surface of the field board 50 on the external environment side. Used for.

In the heat insulating roof structure of the present invention, it is necessary that the fastener 30C does not extend in the thickness direction of the heat insulating material 40 on the field board 50. As a result, the transfer of heat from the external environment to the inside through the fastener 30C can be effectively suppressed.

As the heat insulating material 40, conventionally known heat insulating materials for roofs can be used, but in the present invention, foamed plastic foam boards, particularly polyisocyanurate foam boards, are preferable in terms of workability and heat insulating properties. The heat insulating material 40 is adhered to the field board 50 with an adhesive. As the adhesive used here, conventionally known adhesives can be used, but in the present invention, chloroprene rubber-based adhesives and vinyl acetate-based adhesives are preferable. When it is desired to increase the thickness of the heat insulating material 40, a material in which a plurality of heat insulating materials (for example, foamed plastic foam board) are bonded and laminated with an adhesive can be used.

In the heat insulating roof structure of the present invention, it is necessary that there is no structural material (metal rafters or the like) extending in the thickness direction of the heat insulating material 40. As a result, the thermal bridge that straddles the heat insulating material 40 is eliminated, and the transfer of heat from the external environment to the inside can be effectively suppressed.

The waterproof sheet 20 is arranged on the heat insulating material 40 and is adhered without making holes with nails or screws, and even if rainwater or moisture invades through the gaps of the metal roofing material 10 above it. This is to prevent the transition below the waterproof sheet 20. In the present invention, the waterproof sheet 20 is preferably a sheet made of synthetic rubber, and a non-vulcanized butyl rubber-based sheet is particularly preferable. The waterproof sheet 20 can be adhered by applying an undercoat primer as a base treatment material on the heat insulating material 40 and then placing it on the undercoat primer. Thereby, the adhesion of the waterproof sheet 20 can be effectively performed by the adhesion of the undercoat primer and the rubber forming the waterproof sheet 20. As the undercoat primer, a butyl rubber-based primer is preferable.

As the metal roofing material 10, conventionally known materials such as galvalume steel plate (registered trademark), gallium steel plate, and zinc alloy plate can be used. In the present invention, the back surface is lined with synthetic rubber, particularly non-vulcanized butyl rubber. It is preferable that it is. The metal roofing material 10 is arranged on the tarpaulin 20 and can be adhered and fixed by the adhesiveness of the rubber lined to the metal roofing material 10 to the rubber of the tarpaulin 20. Adhesion between the rubber of the waterproof sheet 20 and the rubber lined on the metal roofing material 10 ensures that the two are adhered and fixed.

Next, an example of the construction method of the heat insulating roof structure of the present invention will be described. First, according to the designed roof structure, for example, purlins 60 are arranged at regular intervals in a direction orthogonal to the inclination direction of the roof. As the purlin 60, one having a fireproof coating can be used. Next, the field board 50 is arranged on the purlin 60 according to the allocation, and the field board 50 is fixed to the purlin 60 with a fastener material. An adhesive is attached to the field board 50 to bond and fix the heat insulating material 40, and if necessary, a joint tape is attached to the joint portion of the field board 50. When it is desired to thicken the heat insulating material 40, a plurality of heat insulating materials 40 are laminated by using an adhesive as needed.

The undercoat primer is uniformly applied onto the heat insulating material 40 using a roller, a brush, or the like. After applying to the entire surface, allow a sufficient curing period until it dries. Next, the marking is performed in advance, and the waterproof sheet 20 is laid in accordance with the marking line. The laying is done by pressing with a roller or the like and crimping while removing air. Next, marking is performed according to the layout drawing, and the metal roofing material 10 is fixed by crimping the metal roofing material 10 with a rubber hammer or the like so that the rubber lined with the metal roofing material sufficiently adheres to the waterproof sheet 20. In these steps, the construction of the insulated roof structure is basically completed.

The insulated roof structure of the present invention has been described in detail above, but these are merely examples, and the above-described embodiments have been modified or partially deleted unless the scope of the claims of the present invention is substantially deviated. It should be understood that some replacements, some additions of technology, etc. are possible. In addition, for the sake of simplification of the explanation, it should be understood that there is a part in the above explanation that does not sufficiently describe the conventionally known structure and construction process. As long as the technical idea of the present invention is sufficiently inherent, such an insulated roof structure and construction method belongs to the category of the present invention.

According to the heat-insulated roof structure of the present invention, a simple roof structure can enhance heat-insulating and waterproofing properties, and is also excellent in workability, which is extremely useful in the art.

10 Metal roofing material 10A Suspension 10B Fastener 20 Waterproof sheet 30A Metal rafter 30B Fastener 30C Fastener 40 Insulation material 50 Field board 50A Fastener 60 Purlin

Claims (4)

A main building, a field board disposed on the main building and fixed to the main building with a fastener, and a field board arranged on the field board and bonded to the field board with an adhesive. A heat insulating material, a waterproof sheet disposed on the heat insulating material and adhered to the heat insulating material by adhesion of rubber forming a waterproof sheet via an undercoat primer, and disposed on the waterproof sheet. In addition, it is a heat insulating roof structure including a metal roofing material fixed to the waterproof sheet by adhesiveness of rubber backed by a metal roofing material, and the fastening material extends in the thickness direction of the heat insulating material. A heat insulating roof structure characterized in that there is no structural material extending in the thickness direction of the heat insulating material. Claim 1 is characterized in that the undercoat primer is a butyl rubber-based primer, the waterproof sheet is a non-vulcanized butyl rubber-based sheet, and the rubber lined with the metal roofing material is a non-vulcanized butyl rubber. Insulated roof structure as described in. The heat insulating roof structure according to claim 1 or 2, wherein the heat insulating material is a foamed plastic foam board. The heat insulating roof structure according to any one of claims 1 to 3, wherein the heat insulating material is one in which a plurality of heat insulating materials are bonded and laminated by an adhesive.

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