JP2017095868A - Folded-plate roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folded-plate roof structure capable of restraining dripping to a ceiling surface due to dew condensation, by reducing the occurrence of the dew condensation in a waterproof sheet fixing machine screw while making the waterproof sheet fixing machine screw hard to loosen.SOLUTION: A folded-plate roof structure 1 of the present invention comprises a folded-plate roof material 2, a machine screw holding plate 3 fixed to the folded-plate roof material 2 above the folded-plate roof material 2, a heat insulation material 4 provided above the machine screw holding plate 3 and a waterproof sheet 5 fixed above the heat insulation material 4 by a waterproof sheet fixing machine screw 7, and the waterproof sheet fixing machine screw 7 is fixed to the machine screw holding plate 3 by penetrating through the heat insulation material 4 without penetrating through the folded-plate roof material 2.SELECTED DRAWING: Figure 1

Description

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

  Conventionally, for example, as a roofing material for buildings such as houses, factories, gymnasiums, stores, warehouses, etc., a roof structure using a folded plate roofing material in which a metal plate material is bent and alternately formed to form a mountain part and a valley part. 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 disposed below (indoor side) the folded-plate roof material. There was a problem that dew condensation was likely to occur on the inner housing surface.

  In order to reduce the occurrence of such dew condensation, there is an outer heat insulation method in which a heat insulating material is disposed above (outdoor side) of the folded roof material and a waterproof sheet is disposed above the heat insulating material in order to ensure waterproofness. (See Patent Document 1). A so-called mechanical fixing method is used as a method of fixing the waterproof sheet. This is done by fixing a plate-shaped fixture placed above the heat insulating material with a fixing screw that penetrates the fixing device and the heat insulating material and is screwed to the folded roof material, and an upper surface of the fixing device. The bottom surface of the waterproof sheet is fixed by adhesion or the like.

JP-A-2015-13637

  However, in the case of the above-described 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. Moreover, since the plate thickness of the folded plate roof material is relatively thin, the holding force due to the friction between the folded plate roof material and the screwed portion of the screw is not sufficient, and the waterproof sheet pulsates as described above. As a result of repeatedly receiving the force in the direction of pulling the screw upward, the screw may be loosened. And if a screw loosens and the head of a screw protrudes above a fixture, there is a possibility that a waterproof sheet may be broken by contacting the waterproof sheet.

  In addition, the head of the fixing screw is close to the outside air across the waterproof sheet, and the tip of the fixing screw protrudes indoors from the bottom surface of the folded plate roofing material. When the temperature of the screw is low, the head side of the fixing screw close to the outside air is cooled to form a heat bridge, and condensation may occur at the tip of the screw. And there was a possibility that the dew condensation generated at the tip of the screw dropped on the ceiling surface, causing mold and stains.

  Therefore, the present invention makes it difficult to loosen the waterproof sheet fixing screw for fixing the waterproof sheet, reduces the occurrence of condensation on the waterproof sheet fixing screw, and is located below the folded plate roofing material even when condensation occurs. It aims at providing the folded-plate roof structure which can suppress dripping to the ceiling surface to do.

The present invention has been made to solve the above problems, and the folded plate roof structure of the present invention includes a folded plate roof 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 folded plate roof material.

  Moreover, in the folded-plate roof structure of this invention, the front-end | tip part of the said waterproof sheet fixing screw is located in the valley inner space formed between the trough part of the said folded-plate roof material, and the said screw holding plate. It is preferable.

  Further, in the folded plate roof structure of the present invention, the screw holding plate passes through the screw holding plate without passing through the heat insulating material, and is fixed to the folded plate roof material by a plate material fixing screw. It is preferable to be fixed to the folded plate roofing material.

  Moreover, in the folded-plate roof structure of this invention, it is preferable that the said board | plate material fixing screw is being fixed to the mountain part of the said folded-plate roof material.

  According to the present invention, the waterproof sheet fixing screw for fixing the waterproof sheet is made difficult to loosen, the occurrence of condensation on the waterproof sheet fixing screw is reduced, and even when condensation occurs, the position is located below the folded plate roofing 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 of 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 laminated plate arranged above a folded plate roof material 2. And a waterproof sheet 5. In the illustrated example, the lower side of the folded 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 is applicable is, for example, a two-story industrialized house having a steel frame structure, a reinforced concrete base structure standing on the ground, a column, An upper structure having a shaft frame composed of structural members such as beams and fixed to the foundation structure. The structural members constituting the frame of the upper structure are standardized (standardized) in advance. Therefore, the structural member is manufactured at the factory, and the frame of the upper structure is assembled at the construction site.

  The folded plate roofing material 2 is formed by bending a metal plate material having a plate thickness of 1 mm to 1.6 mm, for example, into a shape in which peak portions 2a and valley portions 2b are alternately and repeatedly formed. In addition, the shape, board thickness, etc. of the peak part 2a and the trough part 2b of the folded-plate roof material 2 are not specifically limited, The folded board of arbitrary shapes is employable. In addition, although the distance of the up-down direction (vertical direction) of the upper surface of the peak part 2a and the lower surface of the trough part 2b can be 75 mm-150 mm, for example, it is not limited to this. The folded plate roofing material 2 is supported by being directly coupled to a building frame (not shown) or indirectly through another connecting member.

  The screw holding plate 3 is disposed 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 the screw holding plate 3 has a sufficient holding force when screwing and fixing the waterproof sheet fixing screw 7, and may be a single plate. A laminate of a plurality of plates may be used. The screw holding plate 3 can be, for example, a wood wool cement plate, a wood piece cement plate, a plywood or the like having a thickness of 12 mm to 18 mm. Moreover, it is preferable that the screw holding plate 3 is excellent in fire resistance and durability. From this point of view, in this embodiment, a wood wool cement plate is used.

  In the present embodiment, the screw holding plate 3 is placed on the top surface of the mountain portion 2a of the folded plate roofing material 2 and is fixed by a plurality of plate material fixing screws 6. It is also possible to fix.

  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 material fixing screws 6 are arranged at a plurality of locations at appropriate intervals so that the screw holding plates 3 can be fixed to the folded roof material 2 with a 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 peak 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 when fixing to the valley portion 2b of the folded plate roof material 2. it can.

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

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

  In the present embodiment, a reinforcing plate 8 is disposed between the heat insulating material 4 and the waterproof sheet 5 as shown in FIG. The reinforcing plate 8 is configured to reinforce the folded plate roof structure 1, and is provided with a reinforcing plate 8 on the upper part of the soft heat insulating material 4 so that it can be walked on the folded plate roof structure 1. However, the reinforcing plate 8 is not an essential component in the present invention. The reinforcing plate 8 can be, for example, a non-combustible plate or an insulation board having a thickness of about 6 mm, and another plate-like member can be disposed above or below the reinforcing plate 8.

  A plurality of fixtures 9 for fixing the waterproof sheet 5 are arranged above the reinforcing plate 8 at a predetermined interval. The fixture 9 can be, for example, a metal or resin disk-like member provided with a hole through which the waterproof sheet fixing screw 7 passes in the center, but the shape and thickness are not particularly limited. The fixing tool 9 is fixed to the screw holding plate 3 by a waterproof sheet fixing screw 7 that passes through the fixing tool 9, the reinforcing plate 8, and the heat insulating material 4 and is screwed to the screw holding plate 3. The waterproof sheet 5 can be fixed to the screw holding plate 3 by fixing the lower surface of the waterproof sheet 5 to the upper surface of the fixture 9 by bonding or the like.

  The waterproof sheet fixing screw 7 does not penetrate the folded plate roofing material 2, and the distal end portion 7 a of the waterproof sheet fixing screw 7 is formed between the valley portion 2 b of the folded plate roofing material 2 and the screw holding plate 3. It is located in the valley space S. 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-described configuration, the waterproof sheet fixing screw 7 for fixing the waterproof sheet 5 is used as the screw holding plate 3 having a higher screw holding force than the folded plate roof material 2. It is possible to make it difficult to remove the waterproof sheet fixing screw 7. Thereby, even if the waterproof sheet 5 repeatedly pulsates up and down by the wind, and the force in the pulling direction is repeatedly applied to the waterproof sheet fixing screw 7, the waterproof sheet fixing screw 7 is difficult to protrude above the fixture 9. The possibility that the waterproof sheet 5 is torn can be reduced.

  Further, since the waterproof sheet fixing screw 7 does not penetrate the folded plate roofing material 2, even if condensation occurs at the tip 7 a, it is only dropped on the upper surface of the folded plate roofing material 2. It is possible to suppress the occurrence of mold and stains on the ceiling surface without dripping on the ceiling surface (indoor side) of the roofing material 2. In addition, since the board | plate material fixing screw 6 does not penetrate the heat insulating material 4, it is hard to become a thermal bridge, and generation | occurrence | production of the dew condensation by the board | plate material fixing screw 6 is also suppressed.

  Further, by disposing the tip end portion 7 a of the waterproof sheet fixing screw 7 in the valley portion 2 b 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 trough 2b of the folded plate roofing material 2, it can be easily fixed to the screw holding plate 3 without penetrating the folded plate roofing 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 by the plate material fixing screw 6, and then the heat insulating material 4 and the reinforcing plate 8 are laminated and arranged. A waterproof sheet fixing screw 7 is driven from above 9 and fixed to the screw holding plate 3, and further, a waterproof sheet 5 bonded to the upper surface of the fixture 9 can be formed as a unit in the factory. If it does in this way, the work efficiency in a building site can be improved by couple | bonding with the frame of a building in a building site.

  As mentioned above, although demonstrated based on the example of illustration, this invention is not limited to the above-mentioned embodiment, It can change suitably within the description range of a claim, for example, a folded-plate roof material It is also possible to arrange other members between 2 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.

DESCRIPTION OF SYMBOLS 1 Folded plate roof structure 2 Folded plate roofing material 2a Mountain part 2b Valley part 3 Screw holding board 4 Heat insulating material 5 Waterproof sheet 6 Board material fixing screw 7 Waterproof sheet fixing screw 7a Tip part 8 Reinforcement board 9 Fixing tool S Valley space

Claims (4)

Folding 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 folded sheet roof structure characterized in that the waterproof sheet fixing screw penetrates the heat insulating material and is fixed to the screw holding plate without penetrating the folded sheet roof material.   The folded plate roof structure according to claim 1, wherein a tip end portion of the waterproof sheet fixing screw is located in a valley inner space formed between a valley portion of the folded plate roof material and the screw holding plate.   The screw holding plate is fixed to the folded plate roof material by a plate material fixing screw that penetrates the screw holding plate and is fixed to the folded plate roof material without penetrating the heat insulating material. Item 3. The folded plate roof structure according to item 1 or 2.   The folded plate roof structure according to claim 3, wherein the plate material fixing screw is fixed to a mountain portion of the folded plate roof material.

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