JP2007107284A - Repair structure of external facing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repair structure for repairing the existing external facing formed of a cement external material deteriorating and releasing dust at low cost in a short construction period. <P>SOLUTION: In this structure for repairing the existing external facing α, a structural surface material C is formed on the existing external facing α. The structural surface material C and a new external facing A are fixedly adhered to each other with a field foam resin material D. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure for repairing an existing exterior made of a cement-based exterior material that releases dust by degrading at a low cost with a shortened construction period.

    In order to renovate this type of exterior, conventionally, all existing exterior materials were removed, waterproof sheets such as asphalt roofing were installed on the foundation as needed, and various roof materials were constructed on the sheets. It was. In addition, a method of constructing a new exterior material via a heat insulating material has been developed. See Patent Documents 1 and 2.

JP 2001-288856 A JP 2001-329660 A

  However, it took a lot of cost and time to remove the existing exterior material, and a large amount of remaining material was produced. In recent years, the labor shortage has become a major problem, and it is no longer possible to find a repair structure without considering the labor shortage. Furthermore, due to the effects of acid rain in recent years, cement and slate roofing materials have deteriorated remarkably, and cracking of the roofing materials and weathering of the roofing materials have caused scattering of constituent materials (for example, cement, asbestos, etc.). I'm starting. For this reason, in the repair structure that removes the deteriorated roofing material, not only workers but also neighboring residents are concerned about dust scattering such as cement and asbestos and treatment of the removed material. Patent Document 1 is a construction method in which a heat insulating material is fixed with urethane resin applied on an existing roof and a roof plate material is formed thereon, and Patent Document 2 is corrugated with urethane resin on a corrugated slate existing roof. Although it is the structure which fixes the heat insulating material substantially the same as the slate existing roof, and forms a roof board | plate material on it, there existed a problem which became expensive in terms of construction property and construction period.

  In order to solve such drawbacks, in the present invention, in a structure for renovating an existing exterior, a structural face material is formed on the existing exterior, and the structural face material and the new exterior are in-situ foamed resin material It provides a renovation structure of the exterior that is bonded and fixed by the above.

  According to the exterior repair structure according to the present invention, (1) since it can be formed on the existing exterior without removing it, the construction is simple, no remaining material is produced, and the construction period is greatly shortened. It becomes a renovation structure that can be done. (2) No residual material is produced, and no harmful substances such as dust generated when removing the residual material are released. (3) Since the entire surface of the existing roof is covered with the in-situ foamed resin material, the dust of the deteriorated roof material is prevented from being scattered and the deterioration of the roof material is suppressed. Improves waterproofing, soundproofing, fireproofing, fireproofing, etc. (4) In order to cover the existing exterior with the in-situ foamed resin material, it is not necessary to add a waterproof function and an airtight function to the new exterior. (5) Even if the shape of the new exterior is simple, it functions as a new exterior. (6) A joint member for connecting the new exteriors is not required. (7) There is no need to fix a new exterior with a nail, and workability is improved. (8) Since the structural face material is formed, the strength is improved and the earthquake resistance is improved. There are features and effects.

  Hereinafter, an embodiment of an exterior repair structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing a typical example of the above-described repair structure, FIGS. 2 to 7 are explanatory views showing the construction state of the above-mentioned repair structure, and FIGS. 8A to 8I are perspective views showing a new exterior A, 9 (a) to 9 (d) and FIGS. 10 (a) to 10 (d) are explanatory diagrams showing the construction order, and an existing exterior α (showing a roof in the figure), a new exterior A, a roof surface B, The structural face material C, the in-situ foamed resin material D, and the synthetic resin foam layer E are used.

That is, the existing exterior α is the base plate α1. , Asphalt roofing α2 Existing exterior material α3 It is a roof that has been made old enough to require renovation. More specifically, the existing exterior material α3 is mainly made of cement, and deteriorates with time due to rain (acid rain), wind, sunlight, ultraviolet rays, etc., and the surface becomes powdery and dust is scattered. Such exterior materials (so-called new roof tiles), specifically, asbestos slate (colored asbestos slate, corrugated asbestos slate), cement board, and the like.

  New exterior A is metal roofing material, metal tile roofing material, tile roofing material, asbestos-colored slate roofing material, asbestos corrugated slate roofing material, cement roofing material, etc. is not. An example of the new exterior A is a new exterior A as shown in FIGS.

  The roof surface B is a repair work construction surface of the existing exterior α on which the existing exterior material α3 is constructed.

  Structural face material C includes, for example, structural plywood, particle board, structural panel (OSB), hard board, hard wood cement board, gypsum board, gypsum lath board, sieving board (sieving insulation board), rasito, MDF , Etc. In particular, the structural plywood as an example of the structural face material 14 is preferably a structural plywood class 1 (specialty / class 1) called K-ply. The dimensions are 7.5 to 30 mm in thickness, width = 910 and 1220 mm, and length = 1820, 2430, and 2730 mm. Moreover, the structural plywood second grade (special class 1) of the structural plywood can be used as the structural face material 14, which is used in the same manner as the first grade, but is mainly composed of softwood plywood. . The dimensions are thickness = 5.5-24 mm, width = 910/1220 mm, etc., length = 1800/1820/2430/2730 mm, etc. In addition, it is good to use "special" for exterior use. Of course, as a countermeasure against sick house syndrome, a low-formaldehyde formaldehyde emission level F ☆☆☆☆ or F ☆☆☆ structural plywood may be used.

  As shown in FIG. 3, the structural surface material C is fixed on the existing exterior α (on the roof surface B) via a fixture β such as a nail without a gap.

  As shown in FIG. 4, the in-situ foamed resin material D is mainly sprayed on the structural surface material C at the construction site to form a thickness of about 5 to 60 mm, thereby mainly bonding materials, heat insulating materials, airtight materials, It functions as a sealing material, a soundproofing material, etc., and the construction is filled so that a heat insulation defect portion and a gap cannot be formed. Specific examples include polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam, urea foam, and the like.

  Furthermore, flame retardants such as antimony trioxide, halogen compounds, phosphate esters, aluminum hydroxide, molybdenum compounds and zinc compounds can be mixed in the above foam as a matrix to improve fire resistance and fire resistance. .

The synthetic resin foam layer E is a synthetic resin foam that is foamed and solidified by discharging the in-situ foamed resin material D. The in-situ foamed resin material D is structured so as to be formed on the entire surface of the structural surface material C. The synthetic resin foam layer E is formed by discharging onto the face material C.

  The synthetic resin foam layer E functions as an adhesive between the structural face material C and the new exterior A, and improves the heat insulation, airtightness, waterproofness, fireproofing, fireproofing, soundproofing, etc. of the entire roof. It is something to be made. Of course, since the structural face material C and the new exterior A are bonded and fixed by the in-situ foamed resin material D, there is no need for a fixture for fixing the new exterior A, and the workability is improved. is there.

  In order to cover the structural face material C with the in-situ foamed resin material D, it is not necessary to add a waterproof function and an airtight function to the new exterior A. Even if the shape of the new exterior A is simple, the new exterior A It can be used as

Next, the exterior repair structure according to the present invention will be briefly described through construction examples. First, on the existing exterior α as shown in FIG. 2, a structural face material C made of a structural plywood is fixed over the entire surface as shown in FIG. Next, the in-situ foamed resin material D is discharged over the entire surface of the structural surface material C as shown in FIG. 4, and then the new exterior A is bonded to the in-situ foamed resin material D as shown in FIGS. The adhesive is fixed within a certain time, and is filled with the synthetic resin foam layer E for construction.

  This process is performed at any time in the order as shown in FIGS. 9A to 9D and FIGS. 10A to 10D to form a new exterior A composed of a new roof surface. Of course, as shown in the figure, to construct a new exterior A that is horizontally stretched, the construction proceeds upward, but to construct a new exterior A that is constructed vertically, the construction is proceeded in the lateral direction although not shown. It is.

  What has been described above is only one example of the exterior repair structure according to the present invention, and the exterior repair structure according to the present invention can also be formed on an existing wall material. Further, by fixing the new exterior A to the housing with a fixing tool such as a nail, the adverse effect of the deteriorated existing exterior material α3 can be eliminated, and the mounting strength of the new exterior A can be improved.

It is explanatory drawing which shows the representative example of the exterior repair structure which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction state of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the representative example of the novel exterior used for the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction order of the repair structure of the exterior which concerns on this invention. It is explanatory drawing which shows the construction order of the repair structure of the exterior which concerns on this invention.

Explanation of symbols

A New exterior B Roof surface C Structural surface material D On-site foamed resin material E Synthetic resin foam layer α Existing exterior β Fixture α1 Field board α2 Asphalt roofing α3 Existing exterior materials

Claims (1)

In a structure for renovating an existing exterior, a structural face material is formed on the existing exterior, and the structural face material and the new exterior are bonded and fixed by an in-situ foamed resin material Refurbishment structure.

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