JP2013068042A - Improved insulation structure for existing plate roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved insulation structure for an existing plate roof, making external heat hard to be transferred to an attic in a building using a metal roof and providing the circumstance with improved habitability in the building by imparting sufficient heat insulating performance for ambient temperature in summer and winter to the building, and to provide a method for efficiently constructing such an improved insulation structure of an existing plate roof.SOLUTION: A heat insulation layer member 3 is provided on a top face of an existing plate roof 1 consisting of folded plates, and on the top face, a heat insulation sandwich panel 2 is covered by a heat insulation sandwich panel 2 so as to cover the whole surface of the existing plate roof 1, to make an improved insulation structure of the existing plate roof in which an underside of an eaves edge E stretched from a building wall surface W within the existing plate roof 1 is covered by the heat insulation layer member 3. The underside of the eaves edge E is covered by the heat insulation layer members 3, 11 and the like and the heat insulation sandwich panel 2 is provided on the top face of the existing plate roof 1 via the heat insulation layer member 3. Thereby, external heat is hardly transferred to an attic in a building B and dew condensation can be sufficiently prevented.

Description

  The present invention relates to an improved heat insulating structure for an existing plate roof for improving the heat insulating properties of a folded plate roof and other existing plate roofs, and a construction method thereof.

  In general, flat roofs made of folded metal plates such as aluminum zinc alloy-plated steel sheets and corrugated slate plates can be built relatively easily in a short construction period, such as factories, temporary houses, garages or warehouses. Is often used.

  The folded roof is made by using a steel plate with a thickness of 0.6 to 1.2 mm, and the height of the mountain is greatly increased. Fixing brackets are mounted on the beams with a spacing of approximately 1.5 to 6 m, and then fixed on that. It is set up by the construction method.

  Such a folded plate roof can be mass-produced because it has a certain degree of strength by forming a cross-sectional shape into a chevron using a long metal plate and is easy to form. There is an excellent point that it can be constructed in a short time in the event of a disaster.

  However, because the plate roof is made of metal or thin material, it has low thermal insulation and high thermal conductivity, and the thermal insulation necessary for the purpose of the building is separately provided. It is necessary to secure by means.

  For example, as shown in FIG. 9, a heat insulating material 23 such as glass wool is fitted and arranged on the upper concave surface of a corrugated folded plate 22 attached to a tight frame 21 fixed to a beam 20 of a building B. There is known an improved heat insulating structure in which a base board 24 such as a plywood is disposed on a folded board, and a metal plate 25 is further laid on the base board 24 (Patent Document 1).

  In addition, a plurality of new roofing materials are connected and fixed above the existing folded-plate roof with a fixing bracket, and the new roofing material is filled with a heat insulating material between two metal shells. An improved heat insulating structure that is formed is known (Patent Document 2, FIG. 4).

  In many cases, a fiber-based heat insulating material 27 made of glass wool or the like is laid on the top surface of the ceiling board 26 inside the building.

JP 09-125608 A Japanese Patent Laid-Open No. 2008-231685

  However, the conventional heat insulation structure of the existing plate roof described above is such that the outside air temperature is easily transmitted to the entire metal roof from the lower surface of a part of the eaves part of the plate roof. There is a problem that the heat insulation inside cannot be sufficiently obtained.

  In fact, in a conventional heat insulation structure, even if heat insulation material is laid along the ceiling plate, it causes heavy condensation in winter, and conversely, in summer, the temperature rises above 40 ° C. In addition, there is concern about the sanitary environment due to the occurrence of mold due to condensation, and an improved heat insulating structure and construction method that can quickly solve these problems have not been obtained.

  In addition, sandwich panels formed by filling a thermal insulation between two metal plates (outer skin) are known to have high strength and good thermal insulation properties. In the heat insulation structure which piled up, heat conduction was easy to occur in the existing plate roof through a fixing bracket.

  Therefore, the problem of the present invention is to solve the above-mentioned problems, make it difficult for external heat to be transmitted to the attic in an existing building using a metal plate roof, and the building has heat insulation properties against the outside temperature in summer and winter It is to make it an improved thermal insulation structure of an existing plate roof in order to make the interior of the building a good habitability, or an efficient construction method of such an improved thermal insulation structure of an existing plate roof That is.

  In order to solve the above-described problems, in the present invention, the heat insulating property in which the upper surface of an existing plate roof made of folded plates or corrugated plates is integrated between the front and back two metal shells via a foamed resin layer. In addition to covering with a sandwich panel, an improved heat insulating structure of the existing plate roof is characterized in that the lower surface of the eaves edge portion of the existing plate roof, which is extended to the outside of the building, is covered with a heat insulating layer.

  The improved heat insulation structure of the existing plate roof of the present invention configured as described above is such that the lower surface of the eaves portion of the existing plate roof is covered with the heat insulating layer, so that the lower surface of the eaves portion of the existing plate roof is not exposed to the outside air. Therefore, the amount of heat conducted by the lower surface of the eaves portion being heated or cooled by outside air is reduced, and the amount of heat entering the attic from the plate roof is reduced accordingly.

  For this reason, it is difficult for external heat to be transmitted to the attic of a building using a plate roof, and the building has sufficient heat insulation against the outside air temperature in summer and winter, so that the interior of the building has a comfortable environment. It becomes the heat insulation structure which improved the roof.

  In addition, in this improved heat insulating structure, if the heat insulating layer is further provided on the upper surface of the existing plate roof, the heat insulating sandwich panel can be provided through the heat insulating layer. It becomes difficult for heat to be transmitted to the existing plate roof, and it becomes an improved heat insulation structure of the existing plate roof with improved heat insulation.

  In addition, in order to reduce the thermal conductivity from the eaves portion of the existing plate roof, improvement of the above existing plate roof in which the end surfaces such as the front end surface and the side end surface of the eaves portion of the existing plate roof are covered with a heat insulating layer. It is preferable to have a heat insulating structure.

  Moreover, about the heat insulation layer used for this invention, in order to improve heat insulation so that the convection of a heat | fever does not arise in the inside, it is preferable to employ | adopt that the said heat insulation layer consists of a foamed resin layer.

  In addition, as a construction method for reliably obtaining the improved heat insulation structure of the existing plate roof as described above, a heat insulation layer is overlapped on a part or the whole including at least the eaves portion of the upper surface of the existing plate roof made of folded plate or corrugated plate. Laying and then covering with a heat insulating sandwich panel formed integrally by filling a foamed resin layer between the two outer metal skins on the heat insulating layer, It is preferable to cover the heat insulating layer in order to obtain good heat insulating properties with good work efficiency during construction.

  In this invention, the upper surface of an existing plate roof made of folded plates or corrugated plates is covered with a predetermined heat insulating sandwich panel, and the lower surface of the eaves portion is covered with a heat insulating layer. Therefore, it is difficult to transmit external heat, and there is an advantage that the building has an improved thermal insulation structure of an existing plate roof that has sufficient heat insulation against the outside air temperature in summer and winter and makes the interior of the building a comfortable environment.

  In addition, a heat insulating layer is laid on a part or the whole including the eaves so as to have such a structure, and then covered with a heat insulating sandwich panel, and a heat insulating layer is stacked on the lower side of the eaves. By adopting the covering construction, there is an advantage that it is an efficient construction method of the above-described improved heat insulation structure of the existing roof.

The partial exploded perspective view of the improvement heat insulation structure of the existing board roof of 1st Embodiment Explanatory drawing of the covering process of the heat insulation layer to the lower surface of the eaves part of the existing plate roof Explanatory drawing of the covering process of the heat insulation layer to the upper surface of the eaves part of the existing plate roof Cross-sectional view showing insulating sandwich panel and its connection structure The top view of the plate roof which has the improved heat insulation structure of 1st Embodiment The perspective view which notches and shows a part of improved heat insulation structure of the existing board roof of 2nd Embodiment Parts exploded perspective view explaining attachment of heat insulating material to existing plate roof of second embodiment The perspective view which shows the state which attached the heat insulation layer to the upper and lower surfaces of the existing board roof of 2nd Embodiment. Sectional view of the improved insulation structure of the existing plate roof of the conventional example

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 to 4, in the first embodiment, the upper surface of an existing plate roof 1 made of a folded plate is covered with a heat insulating sandwich panel 2, and the existing plate roof 1 is extended from the building wall W. This is an improved heat insulating structure of an existing plate roof in which the lower surface of the eaves portion E is covered with a heat insulating layer member 3.

  As shown in FIG. 2, the existing plate roof 1 according to the first embodiment is a folded plate roof, and the existing plate roof is formed with a bolt 4 on a tight frame (not shown) welded onto the beam of the building B. 1 is attached.

  In addition, the existing plate roof 1 sandwiches a clamp fitting attached on the tight frame without using bolts at the side edges in the width direction of the two folded plates, and the clamp bracket is attached to both side edges. It is attached by other known means such as a structure in which it is wound and fixed by a tightening machine. Further, the existing plate roof 1 may be not only the illustrated folded plate roof but also a plate roof made of corrugated plates.

  The joists 5 and 6 made of a pair of square members are fixed to the upper and lower surfaces of the front end portion of the eaves portion E of the existing plate roof 1 with bolts (not shown). A beam 7 (steel beam) made of is attached with a bolt (not shown) in parallel with the joist 6.

  Next, as shown in FIG. 2, the heat insulating layer member 3 made of a foamed resin heat insulating board such as expanded polystyrene is passed between the joist 6 and the wall surface W so as to cover the lower surface of the eaves portion E, respectively. It is fixed to the joist 6 and the wall surface W using L-shaped metal fittings or nails, etc., and fixed as shown in FIG.

  Next, as shown in FIG. 3, the heat insulating layer member 3 is fitted on the upper surface of the existing plate roof 1 of the eaves E so as to fill the space between the beam 7 and the joists 5 without any gaps, and further fixed with metal fittings as necessary. To do.

  As shown in FIG. 5, if the heat insulating layer member 3 is disposed at a position that covers at least the eaves portion E and straddles the wall surface E of the building B, the heat insulating effect can be efficiently exhibited. In addition, you may attach so that the whole surface of the existing board roof may be covered as needed.

  Further, as shown in FIG. 3, the heat insulating sandwich panel 2 is placed on the upper surface of the heat insulating layer member 3 provided in a required portion or placed on a beam 7 provided at a predetermined interval over the entire area of the existing plate roof 1. It is fixed by bolting or the like, and the heat insulating sandwich panel 2 is covered so as to cover the entire surface of the existing plate roof 1 so that external heat is hardly transmitted to the attic.

  As shown in FIG. 4, the heat insulating sandwich panel 2 has a foamed resin layer 10 such as polyolefin, polystyrene, or polyurethane foamed between rectangular metal outer skins 8, 9 made of two steel plates. It is integrated.

  In the embodiment, a plurality of mountain shapes parallel to the surface (upper surface) of the heat insulating sandwich panel 2 are formed, and the width of the outer skin 8 on the upper surface side (direction crossing the mountain shape) A folding chevron edge 8a is provided on one side, a convex edge part 9a is formed on one of the side edges in the width direction of the outer skin 9 on the lower surface side, and a concave cutting edge that matches the convex type is formed on the other side. An edge portion 9b having a notch is provided.

  As shown in FIG. 4, the heat insulating sandwich panel 2 is formed by arranging a plurality of sheets so that their longitudinal directions are parallel to each other and fitting the adjacent convex edge 9a and concave edge 9b together to form a chevron edge 8a. The outer skin 8 on the upper surface side is put on an adjacent edge, and the overlapping portion is fixed with bolts as necessary, so that the entire surface of the existing plate roof 1 is covered.

  As shown in FIGS. 1 and 3, a heat insulating layer member 11 made of a heat insulating board made of foam resin is hung on the front surface of a pair of joists 5 and 6 on the front end surface of the eaves portion E of the first embodiment. A lower surface cover 12 made of an L-shaped steel plate having a cross-section is nailed so as to cover the lower surface of the heat insulating layer member 3 and the front surface of the heat insulating layer member 11 which are fixed between the joists 6 and the wall surface W. The front cover 13 made of a steel plate of a required shape is fixed so as to cover the front end surface of the heat insulating sandwich panel 2 by securing with a metal fitting (not shown), and the waterproofness of the eaves portion E is secured.

  Note that a pair of upper and lower covers made of steel plates are attached to the roof side surface including the eaves E as in the second embodiment to be described later to ensure waterproofness from the side surface.

As shown in FIGS. 6-8, 2nd Embodiment has the heat insulation structure similar to 1st Embodiment, and the difference with 1st Embodiment is the upper surface of the existing board roof 1 which consists of folded plates, and That is, a heat insulating member 14 made of a substantially triangular prism-like foamed resin or the like is fitted on the lower surface (FIG. 7), and the joists on the top and bottom surfaces of the eaves portion E in the first embodiment are omitted.
A pair of upper and lower covers 15 made of steel plate are attached to the roof side surface where the improved heat insulation structure of the second embodiment is adopted to ensure waterproofness from the side surface.

  In the first and second embodiments configured as described above, the upper surface of the existing plate roof 1 is covered with the heat insulating sandwich panel 2 and the lower surface of the eaves portion E is covered with the heat insulating layer members 3 and 11. It is difficult for external heat to be transmitted to the attic in the building B using a plate roof.

  As a result of experiments, it was found that the outside temperature of the folded-plate roof building B (with fiber-based heat insulating material made of glass wool laid on the top surface of the ceiling board in the building) was −15 ° C. and the room was 25 ° C. When the dew condensation limit humidity of the attic was 55% without the improved heat insulation structure of the first embodiment, it was 92% after adopting the improved heat insulation structure of the first embodiment. It was improved to.

  As a result, it was confirmed that the building had sufficient heat insulation against the outside temperature in summer and winter, and the inside of the building could be made into a comfortable environment.

DESCRIPTION OF SYMBOLS 1 Existing board roof 2 Heat insulation sandwich panel 3, 11 Heat insulation layer member 4 Bolt 5, 6 Joist 7, 20 Beam 8, 9 Outer skin 8a Yamagata edge 10 Foamed resin layer 12 Lower surface cover 13 Front cover 14 Heat insulation member 15 Cover 21 Tight frame 22 Folded plates 23 and 27 Heat insulating material 24 Base board 25 Metal plate 26 Ceiling plate E Eaves front W Building wall B Building

Claims (5)

  The upper surface of the existing plate roof made of folded plates or corrugated plates is covered with a heat insulating sandwich panel that is integrated between the two front and back metal outer skins through a foamed resin layer, and the building of the existing plate roof An improved heat insulating structure for an existing plate roof, characterized in that the lower surface of the eaves portion that is provided outside is covered with a heat insulating layer.   The improved heat insulation structure of the existing board roof of Claim 1 which provided the heat insulation layer on the upper surface of the said existing board roof, and provided the said heat insulation sandwich panel through this heat insulation layer.   The improved heat insulation structure of the existing board roof of Claim 1 or 2 which covered the end surface of the eaves part of the said existing board roof with the heat insulation layer.   The improved heat insulating structure for an existing folded plate roof according to claim 3, wherein the heat insulating layer is a foamed resin layer.   A heat insulating layer is laid on a part or the entire surface including at least the eaves portion of the upper surface of the existing plate roof made of folded plates or corrugated plates, and then the foamed resin is placed between the two outer metal skins on the heat insulating layer. A method for constructing an improved heat insulation structure for an existing plate roof, comprising covering with a heat insulating sandwich panel integrally formed by filling a layer, and covering the lower surface of the eaves portion with a heat insulating layer.

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