JPS6252115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roof structure for repairing an existing metal sheet roof in which metal sheets are connected to each other by a rising connecting portion.

If water leaks in an existing metal sheet roof due to corrosion or breakage of the metal sheets, if the leak is localized, it is possible to somehow solve the problem by repairing only that part. However, if the roof is no longer useful, or if repairs are needed over a wide area, it may be necessary to replace all of the existing metal sheets. This complete reroofing work may require replacing not only the metal plates, but also the tarpaulin and, in some cases, even the roofing boards, which not only takes a considerable amount of time and effort, but also There were inconveniences such as having to cover the entire house under a tent in case of rain during construction, or temporarily suspending residence.

Therefore, in this invention, the existing metal plate is left as it is as a base structure part, and a new integral roof surface member layer is formed on top of it, thereby creating a repaired roof structure based on a completely new technical concept. This was developed and put into practical use.

The details of the present invention will be explained below. As can be understood from a typical embodiment of the present invention shown in the accompanying drawings, existing metal roofs usually use rafters or rafter-equivalent members 1 as structural members. After that, a roofing board 2 is laid on top of it, and a waterproof sheet 3 such as asphalt felt is laid on its surface, and then a large number of long metal plates 4 of a suitable width are laid with the length direction facing the direction of the roof slope. A cap material 6 is inserted between the rising portions 4a, 4a of each long metal plate 4 via a hanger 5.
The respective ends of the rising portion 4a, hanger 5, and cap material 6 are bolted together to form a rising connecting portion 7, whereby the long metal plates are connected and laid as one piece. By nailing 9 the hanger 5 to the roofing board 2 or passing through the roofing board 2 to the rafter or rafter-equivalent member 1, the metal plates 4, 4
...The whole thing is fixed on the field board 2.

When it becomes necessary to repair such a metal sheet roof for some reason, the existing metal sheet roof can be used as the base structure part of the renovated roof structure without any special modifications, and this base structure can be replaced. First, a waterproof sheet layer 20 is formed on the parts, that is, on the metal plates 4, 4, . . . of the existing roof.

To form the waterproof sheet layer 20, the waterproof sheet is continuously stretched across a plurality of metal plates 4, 4, etc., so as to realize a structure that completely wraps around the rising connecting portion 7. It is laid parallel to the eaves of the existing roof, which is the base structure, and is laid sequentially from the eaves toward the ridge. In the illustrated embodiment, this waterproof sheet is separate from the heat insulating material 11, but this waterproof sheet is integrated in advance on the back surface of the heat insulating material 11, which will be described later. A non-laminated waterproof sheet portion of the heat insulating material 11 of a predetermined width is formed in between, and the rising connecting portion 7 is wrapped at the same place, or
Of course, a structure in which waterproof sheets with a width larger than the width of the heat insulating material 11 are laminated and the portion of the waterproof sheet protruding from the heat insulating material 11 wraps around the rising connection part 7 can of course be adopted depending on the situation. It goes without saying that there is.

After this waterproof sheet layer 20 is formed, a heat insulating material 11 made of foamed synthetic resin, glass fiber, ceramic wool, asbestos, etc. is laid between the metal plate upright connection parts 7, 7 on the existing roof.

As the heat insulating material 11, boric acid, silicic acid or a metal salt thereof, borax, calcium carbonate, phosphate,
A fire retardant made of fire-resistant and non-combustible inorganic powder or foam particles such as silica, alumina, pearlite grains, or cellular glass, or a fire retardant containing one or more flame retardants may be used; ,
There are no particular restrictions on the material of the insulation material; for example, a laminated integrated layer of foamed synthetic resin, glass fiber, asbestos, ceramic wool, etc. on a hard molded board such as an asbestos cement board or a foamed concrete board may be used. .

Note that when laying this heat insulating material 11, if the reinforcing structural members 10 are placed side by side, the heat insulating material 11
Even if a material with high compressibility is adopted, it can be made without any problem in integrally realizing the following structure.

Either the roof surface member 15 is directly laid on the heat insulating material layer formed in this way, or, as in the illustrated embodiment, first the roofing board,
A base board 12 made of plywood or the like is fixed 13 to the base structure made of the existing roof to prepare a complete base, and then a waterproof sheet 14 is laid down as needed, and then the desired roof surface members, For example, a roof surface member 15 is laid to form a roof such as a roof with tile sticks as shown in the figure, a tile roof, an asphalt shingle roof, or the like.

In the figure, 9 is a hanger 5 on an existing metal sheet roof.
Fixing nails 16, 17, the cap material, 18, the rising connecting portion, and 19, the nails for fixing the hanger 16, respectively.

According to the repaired roof structure for the existing metal sheet roof formed in this way, even if the existing metal sheet roof has inconveniences such as leakage points, it can be made extremely sturdy as a roof base structure. Since it is reusable, it is extremely easy to form a new roof surface material layer to finish the desired roof appearance with the desired roof surface material, and it is also possible to create a new roof surface material layer using the desired roof surface material. The repaired roof structure has a waterproof sheet layer 20 that wraps around the rising joints 7 of the metal plates 4, 4, etc. between it and the existing metal plate roof, which is the structural part. This effectively prevents the infiltration of moisture, that is, the infiltration of moisture from damaged areas and other gaps in the existing roof, as well as the occurrence of dew condensation on the metal plates 4, 4... of the existing roof. Therefore, it has the great advantage that the heat insulating function of the heat insulating material layer is not compromised.

A particularly important effect is that resulting from the structure of the waterproof sheet layer 20 that is laminated on the metal plates 4, 4, . . . of the existing metal plate roof. That is, in order to facilitate the deformation of the metal plates 4, 4... due to heat, the formed waterproof sheet layer 20 is formed to wrap around the rising connecting portion 7, and the same place is formed in the structure where the metal plates 4, 4...
Since it is planned to function as an expansion/contraction buffer for the waterproof sheet layer 20, which inevitably deforms as the metal plates 4, 4... deform due to repeated cold and warm temperatures, Even if this is repeated, this expansion/contraction buffer functions and the metal plates 4, 4...
...There is no deterioration of the upper waterproof sheet layer 20, which means that it can continue to function as a perfect waterproof layer for a long time.

Furthermore, since the existing roof is used as a solid base structure, the structure of the roof surface member layer that should be the upper layer can be implemented as a relatively light structure like that of the present invention. It is extremely simple and safe compared to normal workability, and can be achieved in a short period of time, such as not requiring an upper enclosure such as the above, being advantageous in terms of scaffolding, and being able to perform the work without interfering with living conditions. The roof structure can be modified and made very economical.

[Brief explanation of the drawing]

The drawings show a typical embodiment of the present invention; FIG. 1 is a cross-sectional view showing the layered structure of the repaired roof structure, and FIG. 2 is the substructure part of the repaired roof structure. This is a reference sectional view showing an existing metal sheet roof. 1: Rafters or rafter-equivalent components on existing metal sheet roofs, 2: Same roofing boards, 4: Same metal plates, 5:
Same hanger, 7: Same rising connection part, 11: Heat insulation layer,
12: Base board, 15: Roof surface member, 20: Waterproof sheet layer on the lower surface side, 21: Waterproof sheet layer on the upper surface side.

Claims (1)

[Claims] 1. On an existing metal sheet roof where metal plates are connected to each other by a rising connection part, a waterproof sheet layer is formed so as to completely wrap around the rising connection part, and then a heat insulating material layer and a roof surface material layer are sequentially laminated. A repaired roof structure for an existing metal sheet roof that uses the existing metal sheet roof as a direct base structure.