JP2006241832A - Woody roof structure finished with waterproof sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woody roof structure finished with a waterproof sheet having a stable high quality capable of being constructed by a unit construction method by realizing mass-production of structural members in a factory, wherein the roof structure can be constructed in a short term of construction work, is free from a step produced by overlapping of waterproof sheets and can be flatly finished in an excellent appearance. <P>SOLUTION: At least one end of an upper woody board 2 placed on a woody lower board 1 is shifted to the inner side from the side end of the lower board, and the board 2 and the board 1 are integrated to form a laminate. A waterproof sheet 3 formed in a size equivalent to or a little larger than the size of the bottom board 1 is stretched and bonded integrally on the surface of the upper board 2 to constitute a stepped panel B. The two stepped panels are set to abut each other and secured on a joist A, and a joint panel C having a waterproof sheet 5 bonded on its surface is disposed on the lower boards 1 between the abutting stepped panels 2 and 2. The joint panel is secured on the lower boards of the stepped panels, and then the periphery 3a of the water proof sheet 3 of the stepped panels is welded to the waterproof sheet 5 of the joint panel C. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wooden roof structure on a balcony or roof made of a wooden base and having a gradient of 30 ° or less, and more particularly to a wooden roof structure finished with a waterproof sheet.

  As a result of the revision of the Building Standards Law, there is no restriction on the material of the surface material that constitutes the roof, and it is not necessary to burn with a non-combustible material if it passes the prescribed spark test, so it is waterproof for the purpose of reducing the load on the building frame There is an increasing demand for wood-finished roofs with sheet finish.

Finishing the waterproof sheet The wooden roof has a resin-based waterproof sheet attached to the upper surface of the roof basement (field board) in which two or more types of plywood field boards are stacked on top of each other so that the upper and lower joints do not overlap each other. The thing is known (for example, refer patent document 1).
However, with this conventional wooden roof, the construction period is extended depending on the weather at the time of construction on the site, and if the construction area is small, the work efficiency is low and the cost is relatively high. When it is wide, it is necessary to overlap and join the waterproof sheets, so that there is a case where a water pool can be formed at the joined portion.

JP 2003-206598 A

  The present invention has been made in view of such a current situation, and the object of the present invention is that it is possible to mass-produce structural materials in a factory, and as a result, stable and high-quality materials can be obtained by unit construction. Can be provided at a low cost, and the construction period can be shortened. Moreover, a flat-finished waterproofing-finished wooden roof structure that does not cause a level difference in the waterproof sheet is provided.

The wood sheet roof structure finished with the waterproof sheet according to the present invention that achieves such an object is a woody structure in which at least one side is formed in a quadrilateral shape that is smaller than the lower plate on the upper surface of the wooden base plate formed in a quadrilateral shape. The system upper plate is laminated and integrated so that at least one side thereof is retracted inward from the edge of the lower plate, and the size of the upper plate is the same as or slightly larger than the lower plate. The waterproof sheet is integrally bonded to form a stepped panel, and the stepped panels are fixed to the joist while abutting each other, and below the space formed between the upper plate and the upper plate of the adjacent stepped panels. On the plate, a joint panel formed with the same thickness as the upper plate of the stepped panel including a waterproof sheet bonded to the surface thereof is disposed, and the joint panel is used as a lower plate of the stepped panel. After fixing It is obtained by characterized by being obtained by welding the edges of the tarpaulin in the step with the panel in tarpaulin upper surface of the joint panel.
At this time, it is preferable that a water-resistant sheet is interposed between the upper surface of the lower plate of the stepped panel and the lower surface of the joint panel.

  According to the wood-based roof structure finished with a waterproof sheet according to the present invention, the stepped panels are fixed to the joists while abutting each other, on the lower plate of the space formed between the upper plate and the upper plate of the adjacent stepped panels, After placing the joint panel formed with the same thickness as the upper plate of the stepped panel including the waterproof sheet attached to the surface, and fixing the joint panel to the lower plate of the stepped panel, the stepped panel Since the edges of the waterproof sheet are joined together, the construction materials (lower plate, upper plate and joint panel) are combined while being stacked together with different joints, making it possible to perform construction suitable for flying fire certification. Become.

  In addition, structural materials (stepped panels and joint panels) can be produced at the factory and unitized at the construction site, so that stable and high-quality products can be provided at low cost and the construction period can be shortened. It is possible to expect.

Furthermore, when fixed to joists while abutting panels with steps, the edges of the waterproof sheet affixed to the surface of the panel with steps are automatically abutted, and the edges of the abutted waterproof sheets are flat joints Since it will be mounted on a panel, the operation | work which joins the edges of a waterproof sheet will become easy, and a joining level | step difference will not arise in the edge of a waterproof sheet simultaneously.
Accordingly, there is no step in the finished state of the entire roof, the appearance is good, and the water pool problem at the joint portion can be solved.

Hereinafter, specific preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the illustrated embodiments.
The wooden roof structure according to the present invention basically includes a stepped panel B and a joint panel C that are directly fixed to the joists A.

  The stepped panel B is composed of a wooden lower plate 1 and a wooden upper plate 2 each formed in a quadrilateral shape, and a waterproof sheet 3. In other words, the wood-based lower plate 1 is formed into a long or short regular rectangular shape using a wood-based flat plate material made of plywood, particle board, OSB or the like having a thickness of 9 mm or more, and the wood-based lower plate 1 on the upper surface thereof. The wood-based upper plate 2 made of the same material as above is laminated and integrated, and the waterproof sheet 3 is integrally attached to the surface of the wooden upper plate 2 to form a stepped panel B. As the thickness of the waterproof sheet 3 used at this time, a thickness of 1.3 mm to 3.0 mm is used, and a thickness of 1.5 mm to 2.0 mm is more preferable.

When the upper surface of the lower plate 1 is overlapped, the upper plate 2 is formed small so that at least one side thereof recedes inward by 30 mm to 70 mm from the edge of the lower plate 1, and at least one side or more of the upper plate 2 is formed. They are laminated and integrated in a state of retreating inward from the edge of the lower plate 1.
Incidentally, in the first embodiment shown in FIG. 1 and FIG. 2, the upper plate 2 formed in the elongated shape of the same length on the lower plate 1 formed in the elongated shape is arranged in the longitudinal direction. Two sides are formed to be smaller (narrower) so as to recede inward than the edge of the lower plate 1, and the two sides in the longitudinal direction are laminated and integrated in a state of receding inward from the edge of the lower plate 1. In the second embodiment shown in FIG. 3, the upper plate 2 is formed to be slightly smaller (narrower) than the lower plate 1, and one side in the longitudinal direction is inward of the edge of the lower plate 1. The layers are integrated so that they are retracted and the other side in the longitudinal direction protrudes outward from the edge of the lower plate 1.

Here, the plate thickness of the lower plate 1 and the upper plate 2 may be the same, but may be formed with different thicknesses.
It should be noted that a total thickness of 18 mm or more is required in order to meet the flying fire test by the Building Standard Law.

  The method of laminating and integrating the upper plate 2 on the lower plate 1 may be fixed with wood screws, nails, etc. 6, urethane resin, ethylene-vinyl acetate resin, phenol resin, melamine resin Alternatively, it may be fixed with an adhesive such as an acrylic ester resin. Further, in order to further increase the peel strength between the lower plate 1 and the upper plate 2 and further increase the durability, it is preferable to use wood screws, nails 6 and the like together with an adhesive.

  The waterproof sheet 3 bonded to the upper surface of the upper plate 2 may be a thermoplastic resin waterproof sheet or the like that has been conventionally used as this type of waterproof sheet. It is formed in a large shape and is integrally bonded to the surface of the upper plate 2 using an adhesive or a fixing disk. As the thermoplastic resin waterproof sheet, a vinyl chloride resin waterproof sheet is preferable in consideration of workability.

  Here, when the waterproof sheet 3 is bonded to the upper plate 2 using an adhesive, the adhesive is applied to only the surface of the upper plate 2 or applied to the surface of the upper plate 2 and the back surface of the waterproof sheet 3. As the adhesive, a two-component or one-component curable epoxy resin, urethane resin, nitrile butadiene rubber, styrene butadiene rubber, or the like can be used.

  When the waterproof sheet 3 is mechanically fixed to the upper plate 2 using a fixing disk, for example, a stainless steel fixing disk whose surface is coated with a polyester resin hot melt adhesive is used, and the fixing is performed. After fixing the disk to the upper surface of the upper plate 2 with a screw, the waterproof sheet 3 is placed on the disk, and the fixed disk is heated from above the waterproof sheet with an induction heating device to melt the hot melt adhesive. The sheet 3 is bonded and fixed to the fixed disk.

  Further, after the waterproof sheet 3 is bonded to the upper plate 2 using an adhesive, a resin-coated fixing disk coated with a resin such as vinyl chloride resin is fixed on the waterproof sheet 3 with screws, and the fixed disk is fixed. It is also possible to cover with an extension sheet larger than the fixed disk and adhere or weld the extension sheet to the waterproof sheet 3.

On the other hand, the joint panel C fills a space formed between the upper plate 2 and the upper plate 2 of the adjacent stepped panels B generated when the plurality of stepped panels B are laid on the joist A while abutting each other. The stepped panel is formed by bonding a waterproof sheet 5 with an adhesive to the surface of a substrate 4 made of the same wood-based flat plate material as the lower plate 1 and the upper plate 2 constituting the stepped panel B. It is fixed on the lower plate 1 of B. As the adhesive used here, an adhesive used when the waterproof sheet 3 is bonded to the upper plate 2 can be used.
In addition, when fixing the joint panel C to the lower plate 1 of the stepped panel B, a long leg wooden screw, a nail, or the like 6 is used to penetrate the lower plate 1 of the stepped panel B to the joist A. It may be fixed.

  At this time, the thickness as the joint panel C is formed to the same thickness as the upper plate 2 of the stepped panel B. That is, it is formed to have the same thickness as the upper plate 2 of the stepped panel B including the substrate 4 and the waterproof sheet 5 bonded to the surface thereof. In addition, as the size (width), the width L of the space formed between the upper plate 2 and the upper plate 2 of the adjacent stepped panel B when the plurality of stepped panels B are laid against each other. It is preferable to form almost the same.

Next, the construction procedure of the waterproof sheet-finished wooden roof according to the present invention will be described.
After the joist A is struck to form a roof frame (framework), the stepped panels B that match the size of the frame (framework) are faced to each other with the surface of the waterproof sheet 3 facing up. The panels B (lower plate 1) are fixed to the joists A with wooden screws, nails 6 and the like to form a roof surface (floor surface). At that time, an adhesive may be applied to the lower plate 1 of the stepped panel B, and the stepped panel B may be used in combination with a means for bonding and fixing to the joist A.
In addition, as the form of the stepped panel B to be used, when the lateral width on which the roof surface (floor surface) is to be formed is 910 mm to 1820 mm, the one having a step on the two sides in the longitudinal direction is used as in the illustrated example. However, if it is larger than that, a stepped panel B having steps from 2 to 4 sides is used in appropriate combination.

  When a roof surface (floor surface) is formed while a plurality of stepped panels B are brought into contact with each other, the upper plate of the adjacent stepped panel B at the edge integrated and laminated in a state of being retracted inward from the edge of the lower plate 1 Since a space of a certain width (L) is formed between the upper plate 2 and the upper plate 2, the joint panel C is inserted into the space. Then, in the case of the first embodiment shown in FIGS. 1 and 2, the joint panel C covers the joint between the lower plate 1 adjacent to the stepped panel B and the adjacent stepped panels B across the lower plate 1. In the case of the second embodiment shown in FIG. 3, it is placed on the upper surface of one lower plate 1 of the adjacent stepped panel B.

  Thereafter, the joint panel C is fixed to the lower plate 1 of the stepped panel B with a wooden screw, a nail or the like 6 from the top of the waterproof sheet 5, or the joint panel C is fixed to the lower plate 1 of the stepped panel B. Fix it with an adhesive, or fix it together with wood screws, nails 6 and the like. At that time, between the back surface of the joint panel C and the lower plate 1 upper surface of the stepped panel B, a single-sided butyl tape having a thickness of 0.5 mm, or a polypropylene fiber or a polyester fiber having a thickness of 0.1 mm to 0.5 mm. Alternatively, a waterproof nonwoven fabric sheet 7 or the like may be interposed. If it does so, the water resistance of the said junction part can be improved.

Then, as shown in FIG. 2, the upper surface of the joint panel C is completely covered with the edge 3a of the waterproof sheet 3 of the adjacent stepped panel B, and the waterproof sheet 3 of the adjacent stepped panel B is covered. Both side edges 3a, 3a are placed flat on the upper surface of the waterproof sheet 5 of the joint panel C (in a flush state), and the edges of both side edges 3a, 3a are abutted against each other.
Therefore, both edges 3a, 3a of the waterproof sheet 3 of the adjacent stepped panel B are used as expansion whites (bonding whites) and welded to the upper surface of the waterproof sheet 5 of the joint panel C with heat or a solvent, and then the both edges 3a , 3a is waterproofed with a vinyl chloride resin sealing material.
This completes the construction of the wooden roof finished with a waterproof sheet.

1 is a partially cutaway front view showing a first embodiment of the present invention. The expanded sectional view which follows the (X)-(X) line | wire of FIG. The schematic cross section which shows 2nd Example of this invention.

Explanation of symbols

A: joist B: stepped panel C: panel for joint 1: wood base lower plate 2: wood base upper plate 3: waterproof sheet 3a: edge of waterproof sheet 4: substrate 5: waterproof sheet 6: wood screw, nail, etc. 7: Water-resistant nonwoven sheet

Claims (2)

  On the upper surface of the wooden lower plate formed in a quadrilateral shape, at least one side of the wooden upper plate formed in a quadrilateral shape smaller than the lower plate, and at least one side of the upper side plate from the edge of the lower plate Stacked and integrated in a state of retreating to the inside, and the surface of the upper plate is integrally laminated with a waterproof sheet having the same size or slightly larger than the lower plate to form a stepped panel, The stepped panels are fixed to the joist while abutting each other, and on the lower plate of the space formed between the upper plate and the upper plate of the adjacent stepped panel, the stepped portion including the waterproof sheet bonded to the surface thereof is provided. After placing the joint panel formed to the same thickness as the upper plate of the panel, and fixing the joint panel to the lower plate of the stepped panel, the edge of the waterproof sheet in the stepped panel is used for the joint Panel protection Tarpaulin finished wood roof structure characterized by being welded to the upper surface of the sheet.   The waterproof sheet-finished wooden roof structure according to claim 1, wherein a waterproof sheet is interposed between the lower plate upper surface of the stepped panel and the lower surface of the joint panel.

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