JPH036295B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for repairing a metal plate roof using an existing roof as a base, particularly a horizontal roof.

Generally, in a roof made of metal sheets, when the metal sheets corrode over a wide area or are damaged, it is common to replace the metal sheets on the entire roof, so-called re-roofing. However, with this type of method, the waterproof sheet and metal plate must be replaced, which not only prolongs the construction period, but also means that if it rains during the construction period, the roof must be covered with an awning to prevent rainwater from entering the building. There were disadvantages such as having to stop living or having to stop living. Therefore, as a way to simplify this, for example, Japanese Patent Application Publication No. 103623/1983
No. 2993 etc. have been proposed. However, in the former case, the sills (height 36mm) and tile rods (height 36mm)
If nails are not driven long enough to penetrate the roof board (thickness: 15 mm) and the rafters (height: 60 mm), there will be mechanical strength problems. As a result, the length of the nails must be at least 150mm, and when nails are driven, the metal plates and tile rods may deform (pekotsuki), so it is practically impossible to drive a large number of nails. It's impossible. of course,
The rafters had drawbacks such as being easily cracked depending on the position of the nails. In addition, since the latter comes into direct contact with the existing roofing material and the new roofing material, it has good heat conduction and lacks insulation, and because the metal plates are in contact with each other, it is easily damaged during construction and rusts over time. There was a drawback that it was easy for this to occur.

Furthermore, in the case of a horizontal roof and a stepped roof, the stepped part is a void, so it may cave in due to external pressure, such as pressure from workers or snow accumulation, or water may leak or separate from the joints. There was a drawback.

In order to eliminate these drawbacks, the present invention proposes a method for repairing metal sheet roofs by interposing a reinforcing material in the space between the base and the new roofing material to prevent the roofing material from deforming, detaching, and leaking water. It is something to do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the metal plate roof repair method according to the present invention will be described in detail below with reference to the drawings. Figures 1a and 1b are perspective views showing a typical example of the above-mentioned construction method. Figure 1a shows a repaired roof with a structure in which a base plate is directly fixed on the existing roof and a new roof is formed using this as a base. Figure 1 and b show a repaired roof with a structure in which a base plate is fixedly installed on the existing roof with horizontal beams interposed, and a new roof is formed using this as the base. To explain further, in the figure, A is an existing roof, which is composed of rafters 1, roofing boards 2, waterproof layer 3, and roofing material 4. Note that the roofing material 4 is a roofing material for tile stick roofing, either with or without cored wood. B is a newly constructed roof that is formed using the existing roof A as its base, and the base C is a composite board 8 consisting of a sheet-like material 5, a heat insulating material 6, and a hard member 7, or a single board 9 is used as the roof board. It is made to function and a waterproof layer 3' is laid on top of it.
In addition, in figure b, the horizontal beams 10 are cut out at the connection part of the existing roof A and arranged at appropriate pitches in the girder direction. The sheet-like material 5 is kraft paper,
One or two of asbestos paper, aluminum foil, synthetic resin film, asphalt felt, etc.
The heat insulating material 6 is made of synthetic resin foam (polyurethane foam,
polystyrene foam, polyethylene foam,
(phenol foam, polyisocyanurate foam, etc.), and is formed integrally with the sheet-like material 5 and the hard member 7 by using a molded body or by molding. In addition, the hard member 7 is plywood, gypsum board, sheathing board, slate, etc.
The veneer 9 is mainly plywood, wood wool cement board, etc. Reference numeral 11 denotes a reinforcing plate made of plywood, plastic foam (hard) material, etc., which is formed into a sloped shape as shown in Fig. 2 a to e, and filled in the voids of the newly installed roofing material as described below to prevent deformation of the roofing material. This is useful for preventing detachment, improving heat insulation, securing the roofing material, and protecting the waterproof layer 3. In other words, figure a shows a wedge shape, figure b shows the height _h1 of the thick wall part and the height _h2 of the thin wall part _h1 > _h2 , and _h1 - _h2 is the height of the bottom edge of the new roofing material. It corresponds to this. Figure c is the same cross section as figure b, but the end face of the thick portion is set at an angle of θ ₁ <90°. Figure d is divided into two parts, and 11a
11b is the height of h ₂ , and 11b is the height of h ₁ −h ₂ . Figure e shows the reinforcing plate 11 on which scale lines 11c are provided on the slope. To explain further, the reinforcing plate 11 backs up the newly installed roofing material, waterproofs deformation and separation during work on the roof, prevents the sound of rain from propagating indoors, and is placed on the waterproof layer 3. By doing so, the formation of the waterproof layer 3 is facilitated, and by making surface contact with the waterproof layer 3, it is possible to prevent damage to the waterproof layer 3 due to work on the roof and deterioration of the waterproof layer 3 due to solar heat. It helps maintain sex over the long term. Reference numeral 12 denotes a newly installed roofing material, for example, for horizontal roofing formed as shown in FIGS. 3a to 3c. That is, in Figure A, a step portion 12a and an upper locking piece 12b having a lower flap structure are formed at the upper end (in the direction of the ridge) of a rectangular roof material, and a lower locking piece 12c having an upper flap structure is provided at the lower end. It is a roofing material in which a fitting part 12d with a double seam structure is formed on the right end and a fitting piece 12e is formed on the left end. Further, Figure b shows a roofing material in which the connection structure at the left and right ends of the roofing material 12 shown in Figure A is an insert structure in contrast to the ribbed structure in Figure A. Furthermore, the step part 1 in figure c
2a and the upper locking piece 12b are connected to the upper locking piece 12b.
This shows a roofing material in which a protrusion 12f is formed that protrudes in the opposite direction, that is, in parallel to the so-called ridge direction.
Reference numeral 13 is a hanger, and 14 is a nail, the length of which is selected depending on where it will be used.

Next, a construction example will be explained.

First, as shown in FIG. 1a, the composite board 8 is laid on the existing roof A of tile and stick roofing via the nails 14. Next, a waterproof layer 3' made of asphalt felt is laid on the composite board so that each end partially overlaps,
Secure with pins. Therefore, the reinforcing plates 11 are laid in a stepped manner, and the upper and lower ends thereof are fixed to the rafters 1 with nails 14. After that, the upper end of the roofing material 12 is brought into contact with the end surface of the thick part of the reinforcing plate 11 with the stepped part 12a, and the upper locking piece 12b
is fixed to the reinforcing plate 11 via a hanger 13. Further, the connection of the roofing materials 12 in the direction of the girder is a fit-and-insert structure as shown in FIG. 4, and by performing this in the direction of the eaves, the first stage roofing is completed. Therefore, to complete the entire roof, the second stage,
It is sufficient to construct the third stage, . . . nth stage sequentially.

As described above, the metal sheet roof repair method according to the present invention has the feature that a new roof can be easily and efficiently formed on an existing roof without deforming or damaging the existing roof. In addition, the reinforcing material fills the voids in the newly installed roofing material, and also functions as a guide when roofing material is installed and as a fixing part for the hangers, so it can be formed without any skill and without leaking water. be. Furthermore, since the waterproof layer is formed on a flat composite board or veneer, it can be easily constructed, and since the waterproof layer is protected by a reinforcing plate, it maintains its waterproof properties over a long period of time. can do.

[Brief explanation of the drawing]

FIGS. 1a and 1b are perspective views showing one embodiment of the metal sheet roof repair method according to the present invention; FIGS. 3a to 3c are perspective views showing an example of the roofing material, and FIG. 4 is an end view showing a part of the newly installed roof, particularly the connecting portion. 1... Rafters, 4, 12... Roofing materials, 11... Reinforcement plates, 13... Hangers.

Claims (1)

[Claims] 1. When renovating an existing roof in which metal plates are connected to each other by a connecting part, a composite plate or a veneer is placed on the connecting part of the existing roof, a waterproof layer is placed on top of this, and a base layer is provided. A roofing material for horizontal roofing is formed, and a sloped reinforcing plate is sequentially abutted on the base from the eaves to the ridge and fixed in a stair-like manner, and the height is approximately the same as the height of the thick edge of the reinforcing plate. While bringing the upper end rising surfaces into contact, the folded surfaces of the roofing material are locked with hangers, and the left and right ends of the roofing material are sequentially engaged in the girder direction to form the first stage, second stage, and so on. A method for repairing a metal sheet roof, which is characterized by forming a roof by roofing as shown in the nth stage.