JP6689593B2 - Folding board roof structure - Google Patents

Description

  The present invention relates to a folded plate roof structure in which a metal folded plate roof material is provided with a heat insulating material.

  Conventionally, as a roof material for a building such as a house, a factory, a gymnasium, a store, a warehouse, etc., a roof structure using a folded plate roof material in which a metal plate material is bent and alternately repeated to form peaks and valleys. It has been known.

  In order to enhance heat insulation in a building having such a folded-plate roof structure, an inner heat-insulating method is known in which a heat-insulating material is arranged below the indoor (inner side) of the folded-plate roof material. There is a problem that dew condensation is likely to occur on the inner surface of the body.

  In order to reduce the occurrence of such dew condensation, an outer insulation method is used in which a heat insulating material is arranged above the folded roof material (outdoor side), and a waterproof sheet is arranged above the heat insulating material to ensure waterproofness. It is performed (see Patent Document 1). A so-called mechanical fixing method is used as a method for fixing the waterproof sheet. This is because a plate-shaped fixture placed above the heat insulating material is fixed with fixing screws that penetrate the fixture and the heat insulating material and are screwed into the folded plate roof material, and the upper surface of the fixture. The lower surface of the waterproof sheet is fixed by adhesion or the like.

JP, 2005-113637, A

  However, in the case of the above-mentioned construction method, the waterproof sheet can be displaced up and down except for the portion bonded to the fixture, and may repeatedly pulsate up and down due to wind. In addition, since the folded roof material is relatively thin, the holding force due to the friction between the folded roof material and the screwed portion of the screw is not sufficient, and the waterproof sheet pulsates as described above. Also, as a result of repeatedly receiving a force in the direction of pulling the screw upward, the screw may be loosened. If the screw loosens and the head of the screw projects above the fixture, the screw may come into contact with the waterproof sheet and break.

  In addition, since the head of the fixing screw is close to the outside air via the waterproof sheet, and the tip of the fixing screw protrudes from the lower surface of the folding plate roof material toward the indoor side, the outside air temperature is higher than the indoor temperature. When the temperature is low, the head side of the fixing screw near the outside air is cooled to form a heat bridge (heat bridge), which may cause dew condensation on the tip of the screw. Then, there is a possibility that the dew condensation formed on the tip end of the screw may drip on the ceiling surface, causing mold and stains.

  Therefore, the present invention makes it difficult to loosen the waterproof sheet fixing screws for fixing the waterproof sheet, reduces the occurrence of dew condensation on the waterproof sheet fixing screws, and even if dew condensation occurs, it is positioned below the folding plate roof material. It is an object of the present invention to provide a folded-plate roof structure capable of suppressing dripping on a ceiling surface.

The present invention is made to solve the above problems, the folded plate roof structure of the present invention, a folded plate roofing material,
A screw holding plate fixed to the folded plate roof material above the folded plate roof material,
A heat insulating material provided above the screw holding plate,
A waterproof sheet fixed above the heat insulating material by a waterproof sheet fixing screw,
The waterproof sheet fixing screw penetrates the heat insulating material and is fixed to the screw holding plate without penetrating the folded plate roof material.

  Further, in the folded-plate roof structure of the present invention, the tip portion of the waterproof sheet fixing screw is located in the inner space of the valley formed between the valley of the folded-plate roof material and the screw holding plate. It is preferable.

  Further, in the folded plate roof structure of the present invention, the screw holding plate is a plate material fixing screw that is fixed to the folded plate roof material by penetrating the screw holding plate without penetrating the heat insulating material, It is preferably fixed to the folded plate roofing material.

  Further, in the folded plate roof structure of the present invention, it is preferable that the plate material fixing screw is fixed to a mountain portion of the folded plate roof material.

  ADVANTAGE OF THE INVENTION According to this invention, while making it difficult to loosen the waterproof sheet fixing screw for fixing a waterproof sheet, the occurrence of dew condensation on the waterproof sheet fixing screw is reduced, and even when dew condensation occurs, it is positioned below the folding plate roof material. It is possible to provide a folded plate roof structure capable of suppressing dripping onto the ceiling surface.

It is sectional drawing which shows one Embodiment of the folded plate roof structure which concerns on this invention.

  Hereinafter, an embodiment of a folded plate roof structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a folded plate roof structure 1 of the present embodiment. The folded plate roof structure 1 includes a screw holding plate 3, a heat insulating material 4, and a screw holding plate 3, which are stacked above a folded plate roof material 2. And a waterproof sheet 5. In the illustrated example, the lower side of the folded plate roof material 2 is the indoor side, and the upper side of the waterproof sheet 5 is the outdoor side.

  Here, a building (not shown) to which the present invention can be applied is, for example, a two-story industrialized house having a steel frame, and includes a reinforced concrete foundation structure erected on the ground, columns, It has a frame structure composed of structural members such as beams, and an upper structure fixed to a base structure. The structural members constituting the frame of the upper structure have been standardized (standardized) in advance. Therefore, the structural members are manufactured at the factory, and the upper structure frame is assembled at the construction site.

  The folded plate roof material 2 is, for example, a metal plate material having a plate thickness of 1 mm to 1.6 mm, which is bent into a shape in which peaks 2a and valleys 2b are alternately and repeatedly formed. The shape and plate thickness of the crests 2a and the valleys 2b of the folded plate roofing material 2 are not particularly limited, and a folded plate of any shape can be used. The vertical distance (vertical direction) between the upper surface of the peak portion 2a and the lower surface of the valley portion 2b can be set to, for example, 75 mm to 150 mm, but is not limited to this. The folded plate roofing material 2 is supported by being directly connected to a frame (not shown) of a building or indirectly by being connected via another connecting member.

  The screw holding plate 3 is arranged above the folded plate roof material 2 and is fixed to the folded plate roof material 2. The screw holding plate 3 is not particularly limited in thickness and material as long as it has a sufficient holding force when the waterproof sheet fixing screw 7 is screwed and fixed, and may be a single plate. Alternatively, a stack of a plurality of plates may be used. The screw holding plate 3 can be, for example, a wood wool cement plate, a wood chip cement plate, or a plywood plate having a plate thickness of 12 mm to 18 mm. Further, the screw holding plate 3 is preferably excellent in fire resistance and durability. From such a viewpoint, a wood wool cement plate is used in this embodiment.

  In the present embodiment, the screw holding plate 3 is placed on the upper surface of the mountain portion 2a of the folded plate roofing material 2 and is fixed by the plurality of plate material fixing screws 6, but the invention is not limited to this, and the means such as adhesion may be used. It can also be fixed.

  The plate material fixing screw 6 penetrates the screw holding plate 3 without penetrating the heat insulating material 4 and is screwed to the mountain portion 2 a of the folded plate roof material 2. The plate fixing screws 6 are arranged at appropriate intervals at a plurality of positions so that the screw holding plates 3 can be fixed to the folded plate roof material 2 with sufficient holding force. The plate material fixing screw 6 can be, for example, a self-tapping screw, but is not particularly limited. By fixing the plate material fixing screw 6 to the mountain portion 2a of the folded plate roof material 2, it is possible to use the plate material fixing screw 6 having a shorter length than the case of fixing to the valley portion 2b of the folded plate roof material 2. it can.

  The heat insulating material 4 is arranged above the screw holding plate 3 and below the waterproof sheet 5. The heat insulating material 4 can be, for example, a foamed plastic-based member formed by molding phenol foam, polystyrene foam, polyethylene foam, or the like into a plate shape, and can have a thickness of 60 mm to 70 mm. The size is not particularly limited, and a plurality of plate-shaped members may be stacked and arranged.

  The waterproof sheet 5 can be a sheet-shaped member made of polyvinyl chloride, but the material is not particularly limited, and a sheet-shaped member made of any material having a waterproof function can be adopted.

  In the present embodiment, as shown in FIG. 1, the reinforcing plate 8 is arranged between the heat insulating material 4 and the waterproof sheet 5. The reinforcing plate 8 is configured to reinforce the folded plate roof structure 1. By providing the reinforcing plate 8 on the upper portion of the soft heat insulating material 4, it is possible to make the folded plate roof structure 1 walkable. However, the reinforcing plate 8 is not an essential component of the present invention. The reinforcing plate 8 may be, for example, an incombustible plate or an insulation board having a thickness of about 6 mm, and another plate member may be arranged above or below the reinforcing plate 8.

  Above the reinforcing plate 8, a plurality of fixing tools 9 for fixing the waterproof sheet 5 are arranged at predetermined intervals. The fixture 9 can be, for example, a disc-shaped member made of metal or resin having a hole through which the waterproof sheet fixing screw 7 penetrates, but the shape and thickness are not particularly limited. The fixture 9 is fixed to the screw holding plate 3 by a waterproof sheet fixing screw 7 that penetrates the fixture 9, the reinforcing plate 8 and the heat insulating material 4 and is screwed into the screw holding plate 3. By fixing the lower surface of the waterproof sheet 5 to the upper surface of the fixture 9 by adhesion or the like, the waterproof sheet 5 can be fixed to the screw holding plate 3.

  The waterproof sheet fixing screw 7 does not penetrate the folded plate roof material 2, and the tip portion 7a of the waterproof sheet fixing screw 7 is formed between the valley portion 2b of the folded plate roof material 2 and the screw holding plate 3. It is located in the inner space S of the valley. The waterproof sheet fixing screw 7 may be in contact with the folded plate roof material 2 as long as it does not penetrate the folded plate roof material 2, but is preferably separated from the folded plate roof material 2. Is preferred.

  Further, the waterproof sheet fixing screw 7 may be configured to stop inside the screw holding plate 3 without penetrating the screw holding plate 3.

  In the folded plate roof structure 1 of the present embodiment having the above configuration, the waterproof sheet fixing screw 7 for fixing the waterproof sheet 5 is provided with the screw holding plate 3 having a higher screw holding force than the folded plate roof material 2. The waterproof sheet fixing screw 7 can be made hard to come off by fixing the fixing sheet 7 to the waterproof sheet fixing screw 7. As a result, even if the waterproof sheet 5 repeatedly pulsates up and down by the wind and a force in the pulling direction is repeatedly applied to the waterproof sheet fixing screw 7, the waterproof sheet fixing screw 7 does not easily protrude above the fixture 9, It is possible to reduce the risk of the waterproof sheet 5 breaking.

  Further, since the waterproof sheet fixing screw 7 is configured not to penetrate the folded-plate roof material 2, even if dew condensation occurs on the tip portion 7a, it only drops on the upper surface of the folded-plate roof material 2. It is possible to suppress the generation of mold and stains on the ceiling surface of the roof material 2 without dripping on the ceiling surface (on the indoor side). Since the plate material fixing screw 6 does not penetrate the heat insulating material 4, it does not easily become a thermal bridge, and the occurrence of dew condensation on the plate material fixing screw 6 is also suppressed.

  Further, by disposing the tip end portion 7a of the waterproof sheet fixing screw 7 in the valley portion 2b of the folded plate roof material 2, it is possible to make it difficult to contact the folded plate roof material 2. That is, if the waterproof sheet fixing screw 7 is driven toward the valley portion 2b of the folded plate roof material 2, the folded sheet roof material 2 can be easily fixed to the screw holding plate 3 without penetrating the folded plate roof material 2.

  In the folded plate roof structure 1 of the present embodiment, the screw holding plate 3 is fixed to the folded plate roof material 2 with the plate material fixing screws 6, and then the heat insulating material 4 and the reinforcing plate 8 are stacked and arranged to provide a fixture. It is possible to form a unit in which a waterproof sheet fixing screw 7 is driven from above and fixed to the screw holding plate 3, and the waterproof sheet 5 is further adhered to the upper surface of the fixture 9 as a unit. With this configuration, the work efficiency at the construction site can be improved by connecting to the building frame at the construction site.

  As mentioned above, although it explained based on the example of an illustration, the present invention is not limited to the above-mentioned embodiment, and it can change suitably within the statement of a claim. It is also possible to dispose other members between the screw holding plate 3 and the screw holding plate 3, between the screw holding plate 3 and the heat insulating material 4, or between the heat insulating material 4 and the waterproof sheet 5.

1 Folded plate roof structure 2 Folded plate roof material 2a Mountain part 2b Valley part 3 Screw retaining plate 4 Heat insulating material 5 Waterproof sheet 6 Plate material fixing screw 7 Waterproof sheet fixing screw 7a Tip part 8 Reinforcing plate 9 Fixing tool S Valley space

Claims (2)

Folding board roofing material,
A screw holding plate fixed to the folded plate roof material above the folded plate roof material,
A heat insulating material provided above the screw holding plate,
A waterproof sheet fixed above the heat insulating material by a waterproof sheet fixing screw,
The waterproof sheet fixing screw is fixed to the screw holding plate through the heat insulating material without penetrating the folding plate roof material ,
The screw holding plate is fixed to the folded plate roofing material by a plate material fixing screw that does not penetrate the heat insulating material and penetrates the screw holding plate and is fixed to a mountain portion of the folded plate roofing material. Folded plate roof structure characterized by The folded plate roof structure according to claim 1, wherein a tip end portion of the waterproof sheet fixing screw is located in an inner space of a valley portion formed between the valley portion of the folded plate roof material and the screw holding plate.

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