JP2019143317A - Heat insulating material, method for manufacturing the same, modified roof using the same, and method for constructing the same - Google Patents

Abstract

To provide a method for heat insulating and repairing an existing roof having a projecting part at a low cost by a simple work.SOLUTION: A plurality of groove parts 21a are provided parallel to each other on a main surface of a synthetic resin foam flat plate at regular intervals, and a heat insulating material 21 in which, in the cross section of the groove part 21a in the arrangement direction, the shape of the grooves 21a is equal to a shape obtained by rotating a projecting part 21b separating two adjacent groove parts 21a, 21a by 180° is mounted on an existing roof 10 with the groove part 21a facing downward in such a way that the projecting part 14a is enclosed with the projecting part 21a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat insulating material used for heat insulating renovation of an existing roof having a protruding portion on a roof surface, a manufacturing method thereof, a renovated roof using the heat insulating material, and a construction method thereof.

  Conventionally, as a method for heat insulation repair of existing metal roofs having protrusions such as roof tiles and hulls, a non-land surface adjusting material such as a synthetic resin foam board is laid avoiding the protrusions, and a heat insulating plate is mounted thereon. The method of laying is common.

  In Patent Document 1, a fluidized urethane resin is applied to an existing roof surface as an adhesive, and then a heat insulating material cut and processed to a predetermined width is laid and fixed. Further, a fluidic material is used as a joint material between adjacent heat insulating materials. A method of filling the urethane resin is disclosed.

JP 2001-288856 A

  However, in the method disclosed in Patent Document 1, it is necessary to cut the heat insulating material in accordance with the position of the protruding portion, and since urethane resin is used as an adhesive or joint material, material management, preparation, and construction are performed. There was a problem that it was complicated.

  An object of the present invention is to provide a method for thermally insulating and repairing an existing roof having a protruding portion with a simple operation at low cost, and to provide a heat insulating material used in the repair method, a method for manufacturing the heat insulating material, and a repaired roof. There is.

The first of the present invention is a heat insulating material used for repairing an existing roof having a plurality of protrusions arranged in parallel,
The main surface of the synthetic resin foam flat plate has a plurality of groove portions in parallel at regular intervals, and in the cross section in the arrangement direction of the groove portions, the shape of the groove portions is the convex portion separating the two adjacent groove portions. It is characterized by being equal to the shape rotated 180 ° in the cross section.

In the heat insulating material of this invention, the following structures are included as a preferable embodiment.
The arrangement pitch of the protrusions is equal to an integer multiple of 1 or more of the arrangement pitch of the grooves.
The cross-sectional shape of the said groove part and the said convex part is an isosceles trapezoid.
One of both end portions of the heat insulating material in the arrangement direction of the groove portions is formed in the groove portion, the other is formed in the convex portion,
In the cross section in the arrangement direction of the groove portions, the length of the bottom portion of the groove portion at the one end portion and the length of the top portion of the convex portion at the other end portion are the groove portions other than the one end portion. Is the sum of the length of the bottom of the groove and ½ of the length of the side wall of the groove in the arrangement direction of the groove.
An aluminum film is provided on the main surface opposite to the side on which the groove is provided.

The second of the present invention is a method for producing the heat insulating material of the present invention,
A linear heat ray is arranged in parallel to the main surface of the synthetic resin foam plate having a certain thickness, and the heat ray is moved in a direction perpendicular to the heat ray while moving up and down in the thickness direction of the synthetic resin foam plate. Then, the thickness is divided and the synthetic resin foam plate is melt-cut into two sheets.

The third of the present invention, the existing roof having a plurality of protrusions arranged in parallel,
The heat insulating material of the present invention, wherein the groove portion is disposed on the existing roof and the protrusion portion is included in the groove portion, and
It is a modified roof characterized by having at least.

  In a fourth aspect of the present invention, the heat insulating material of the present invention is placed on an existing roof having a plurality of projecting portions arranged in parallel so that the groove portion faces downward and the projecting portion is included in the groove portion. It is a construction method of a modified roof characterized by placing and fixing.

  Since the heat insulating material of the present invention has the same cross-sectional shape of the groove portion formed on the surface and the convex portion between the groove portions, two sheets can be manufactured from one synthetic resin foam plate, and by cutting There is no waste. Moreover, since a plurality of sheets can be stacked without a gap by fitting the convex part into the groove part and overlapping the two sheets, the efficiency of storage and transportation is high. Therefore, it is provided at a low cost.

  Furthermore, in the heat insulation repair of the existing roof using the heat insulating material, it is only necessary to mount and fix the groove portion corresponding to the protruding portion protruding from the roof surface, and the operation is easy.

  Therefore, according to this invention, the heat insulation repair of the existing roof which has a protrusion part can be implemented at low cost by a simple operation | work.

It is a perspective view which shows typically the structure of one Embodiment of the repair roof of this invention. It is sectional drawing of the repaired roof of FIG. It is a perspective view which shows typically the structure of one Embodiment of the heat insulating material of this invention. It is sectional drawing for demonstrating the heat insulating material of FIG. 3, and its manufacturing process. It is sectional drawing which shows typically the structure of other embodiment of the repair roof of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to such embodiments, and can be appropriately modified within the scope of the gist of the present invention.

  FIG. 1 is a perspective view schematically showing a configuration of an embodiment of a modified roof according to the present invention, FIG. 2 is a cross-sectional view of the modified roof according to the embodiment, and FIG. FIG. 2B is a cross-sectional view in the X direction at a position not including the fixing tool 22, and FIG. 2B is a cross-sectional view in the X direction at a position including the fixing tool 22 in FIG. 1. FIG. 3 is a perspective view schematically showing a configuration of an embodiment of the heat insulating material of the present invention. FIG. 4A is a cross-sectional view in the arrangement direction of the grooves 21a, and FIGS. It is sectional drawing for demonstrating the manufacturing process of the heat insulating material which concerns.

  The repaired roof of the present invention is a heat-insulated and repaired existing roof. As shown in FIGS. 1 and 2, the existing roof 10 to be repaired has a plurality of projecting portions 14a in parallel on the roof surface. And by including this protrusion part 14a in the groove part 21a of the heat insulating material 21 of this invention, the unevenness adjustment of a roof surface and heat insulation construction can be performed simultaneously.

  Moreover, the heat insulating material 21 of this invention is a member used for the repaired roof of this invention, Comprising: As shown to FIG. 3, FIG. 4 (a), several groove part 21a is formed in one main surface of a synthetic resin foamed flat plate. In parallel at a constant interval, that is, at a constant arrangement pitch P2. Two adjacent groove portions 21a are separated by a convex portion 21b.

  In the embodiment shown in FIGS. 1 and 2, the existing roof 10 includes a base plate 12 and a roofing 13 on a rafter 11 that is a frame, and a roof plate 14 is laminated thereon. The heat insulating material 21 of the present invention is disposed on the roof plate 14 and is fixed to the existing roof 10 with a fixture 22 having a disk-shaped head. In this embodiment, the heat insulating material 21 is waterproof on the heat insulating material 21. A sheet 31 is laid.

  Usually, the roof plate 14 is made of metal, but is not limited to metal in the present invention. The projecting portion 14a is a hull portion or a tile rod that is a joint portion between the ends of the adjacent roof plate material 14, or a rib formed by bending the roof plate material 14 for reinforcement. The present invention is not limited to this, and a configuration in which a plurality of continuous protrusions in one direction (the Y direction in FIGS. 1 and 2) protrude from the roof surface is a target. Normally, such protrusions 14a are formed at regular intervals in the arrangement direction as shown in FIGS. 1 and 2, but are not necessarily limited to the extent that they can be included in the grooves 21a of the heat insulating material 21 of the present invention. The interval need not be constant. Further, the present invention can be applied to the direction of the protruding portion 14a in any of the eaves-ridge direction, the horizontal direction, and the direction inclined from the horizontal.

  The heat insulating material 21 of the present invention is made of a synthetic resin foam, preferably lightweight and mechanically excellent, and further preferably has closed cells excellent in water resistance and heat insulating properties. Specific examples include polystyrene foam, polyethylene foam, and polyurethane foam. In particular, extruded polystyrene foam (for example, trade name “Styrofoam”, manufactured by Dow Chemical Co., Ltd.) has high mechanical strength and heat insulation, It is preferable because it has low water absorption.

  In the heat insulating material 21 of the present invention, in the cross section in the arrangement direction of the groove portions 21a (the X direction in FIGS. 3 and 4A), the shape of the groove portion 21a and the convex portion 21b that separates the two adjacent groove portions 21a are described above. The shape rotated by 180 ° in the cross section (in the XZ plane) is equal. In other words, in FIG. 4A, the length W1 of the bottom of the groove 21a is equal to the length W2 of the top of the protrusion 21b, and either one of the groove 21a and the protrusion 21b in FIG. 4A. Is rotated 180 °, it overlaps the other. Thus, in the cross section of the arrangement direction of the groove part 21a, the groove part 21a and the convex part 21b were made into the same shape, Therefore The heat insulating material 21 of this invention is two sheets from the plate-shaped synthetic resin foam board. The heat insulating material 21 can be cut out without waste.

  In the heat insulating material 21 of FIG. 4A, as shown in FIG. 4B, a synthetic resin foam plate 41 having a constant thickness T is prepared, and a linear heat ray (not shown) is used as the synthetic resin. A direction (parallel to the Y direction in FIG. 4B) arranged parallel to the main surface of the foam plate 41, and perpendicular to the heat rays while moving up and down in the thickness direction (Z direction) of the synthetic resin foam plate 41 ( The synthetic resin foam plate 41 is melted and cut by moving in the X direction), and as shown in FIG. 4C, two heat insulating materials 21 and 21 having the same groove portion 21a and convex portion 21b are taken. Can do. In such a cutting step, the hot wire moves along the broken line in FIG. 4B as a path, and divides the synthetic resin foam plate 41 into two while forming the groove portion 21a and the convex portion 21b. Therefore, the movement width of the heat ray in the Z direction is t3 which is the depth of the groove portion 21a and the height of the convex portion 21b. The thickness T of the synthetic resin foam plate 41 is the sum (= t2 + t4) of the thickness t2 of the heat insulating material 21 in the groove 21a and the thickness t4 of the heat insulating material 21 in the convex portion 21b. When the two heat insulating materials 21 and 21 overlap each other with one groove 21a and the other protrusion 21b facing each other, the protrusion 21b fits into the groove 21a and is cut as shown in FIG. 4B. Since it becomes the same state as before and can be laminated without gaps, the efficiency of storage and transportation is high.

  4 (b) and 4 (c) show a process of taking two heat insulating materials 21 and 21 from one synthetic resin foam plate 41 having a predetermined thickness T in advance. Is not limited to this. For example, a step of forming a surface having a groove portion 21a by cutting at a position indicated by a broken line in FIG. 4B from an end portion of a thicker synthetic resin foam, and without raising or lowering the heat ray in the Z direction The heat insulating material 21 may be cut out one by one from the synthetic resin foam by sequentially repeating the step of cutting straightly in the X direction to form a surface opposite to the surface having the groove 21a.

  In addition, as a manufacturing method of the heat insulating material 21 of this invention, it is not limited to the method using the above-mentioned heat ray, What is necessary is just to be able to cut | disconnect by the same path | route shown in FIG.4 (b), For example, a wire saw is used. You may use the method of cutting.

  The length L in the arrangement direction of the groove portions 21a of the heat insulating material 21 of the present invention is preferably longer because it can be efficiently repaired. For example, it is preferably used in a width of 900 mm to 1000 mm. Two adjacent heat insulating materials The number is selected as appropriate in consideration of the number of joints and the construction time. Further, the length in the direction along the groove portion 21a is preferably longer, but is appropriately selected in consideration of work efficiency, handleability, and the like.

  In addition, the depth of the groove 21a, that is, the height t3 of the convex portion 21b is preferably substantially equal to the height t1 of the protruding portion 14a when including the protruding portion 14a of the existing roof 10. When t3 is higher than t1, the heat insulating material 21 is easily bent downward in the vicinity of the protruding portion 14a, and when t3 is lower than t1, the heat insulating material 21 may be bent upward in the vicinity of the protruding portion 14a. Therefore, t3 is desirably equal to t1. In addition, when the height t1 of the protrusion part 14a is not equal on the whole, it is preferable to set it as an average height so that the bending and curvature of the heat insulating material 21 may become the smallest.

The minimum thickness of the heat insulating material 21 of the present invention, that is, the thickness t2 at the bottom of the groove 21a is appropriately selected according to the required heat insulating properties, but in consideration of heat insulating properties and workability, it is 15 mm or more. Is more preferable, and 20 mm or more is more preferable. When craftsmen Considering that work rests on the heat insulating material 21, the bending strength at the bottom of the groove 21a is preferably 20 N / cm ² or more, further preferably 25 N / cm ² or more. The compressive strength in the thickness direction is preferably 10 N / cm ² or more, and more preferably 20 N / cm ² or more.

  The shape of the groove 21a may be either rectangular or trapezoidal, but as shown in FIG. 4A, the lengths of the side walls 21c, 21c of the groove 21a in the arrangement direction of the grooves 21a are equal (W3 = W4) It is preferable to form an isosceles trapezoid because the cross-sectional angle of the left and right end portions of the top of the convex portion 21b becomes obtuse and difficult to chip.

  When the protrusions 14a are arranged at a constant interval, the arrangement pitch P2 of the grooves 21a is such that the arrangement pitch P1 of the protrusions 14a is an integer multiple of 1 or more than P2 (P1 = P2 × N (N is It is preferable to set such that it is an integer equal to or greater than 1), but it is not necessarily limited to this as long as the protruding portion 14a can be included.

  Moreover, as shown to FIG. 3, FIG. 4 (a), both ends in the arrangement direction of the groove part 21a of the heat insulating material 21 of this invention are length L so that one side may become the groove part 21a and the other is the convex part 21b. 1 and 2, as shown in FIG. 1 and FIG. 2, at the boundary portion between two adjacent heat insulating materials 21 and 21, one becomes a convex portion 21b and the other becomes a groove portion 21a, and the fixture 22 is attached. Even when fixing or when a craftsman gets on the boundary portion, the convex portion 21b suppresses the heat insulating material 21 from being pushed downward, and the occurrence of unevenness is suppressed. In order to reinforce the boundary portion, as shown in FIG. 5, a synthetic resin member 51 made of the same material may be separately arranged and supported below the end on the groove 21a side.

  In addition, the heat insulating material 21 of the present invention may be appropriately cut and used in accordance with the arrangement pitch P1 of the projecting portions 14a of the target existing roof 10, but the arrangement pitch P1 of the projecting portions 14a is constant. Therefore, it is not necessary to cut by adjusting the length of both ends.

  That is, in the arrangement direction of the grooves 21a, the length W5 of the bottom of one groove 21a at the both ends and the length W6 of the top of the other protrusion 21b are equal to each other, and the groove 21a other than the both ends The sum of the bottom length W1 (that is, the length W2 of the top portion of the convex portion 21b other than both ends) and 1/2 of the length W3 in the arrangement direction of the side wall portion 21c of the groove portion 21a (that is, W4). Are equal. By setting W5 = W6 = W1 + W3 / 2, the arrangement pitch P2 of the groove portions 21a and the convex portions 21b becomes constant over the plurality of heat insulating materials 21 in a state where the plurality of heat insulating materials 21 are arranged, and the protrusions 14a The heat insulating material 21 having the same size does not need to be cut in accordance with the position of the protruding portion 14a on the existing roof 10 having a constant arrangement pitch P1, and can be used without waste.

  In the present invention, it is not always necessary to set W5 = W6 = W1 + W3 / 2. W5 and W6 are longer or shorter than W1 + W3 / 2, or W5 and W6 are not equal. Corresponding to the existing roof, it may be cut and used as necessary. In the case of W5 = W6, two heat insulating materials 21 and 21 having the same shape with W5 = W6 can be obtained by the cutting process shown in FIGS. 4B and 4C. When W5 and W6 are different, the two heat insulating materials 21 and 21 obtained by the cutting process shown in FIGS. 4B and 4C have the same W5 as the other W6, W6 has the same shape as the other W5.

  Further, both end portions in the arrangement direction of the groove portions 21a may be the groove portions 21a or the convex portions 21b, and may be cut and used as necessary according to the existing roof to be constructed. In this case, as for the two heat insulating materials 21 and 21 obtained by the cutting process shown to FIG.4 (b), (c), one both ends become the groove part 21a, and the other both ends become the convex part 21b.

  As for the heat insulating material 21 of this invention, it is preferable to stick the aluminum film on the main surface on the opposite side to the side which provided the groove part 21a, ie, the surface used as the outdoor side. By providing such an aluminum film, a predetermined voltage is applied between the aluminum film and the top surface of the waterproof sheet 31 when the waterproof sheet 31 is laid on the heat insulating material 21 as shown in FIGS. And the presence or absence of the pinhole of the waterproof sheet 31 can be confirmed by detecting the presence or absence of electricity supply.

  In the modified roof of the present invention, the heat insulating material 21 of the present invention is placed on the existing roof 10 with the groove 21a facing downward so that the groove 21a includes the protruding portion 14a, and two adjacent heat insulating materials 21 are placed. It is constructed by attaching and fixing the fixing tool 22 to the boundary portion, applying an adhesive thereon, and sticking the waterproof sheet 31 thereon.

  10: Existing roof, 11: Rafter, 12: Field board, 13: Roofing, 14: Roof board, 14a: Protruding part, 21: Heat insulating material, 21a: Groove part, 21b: Convex part, 22: Fixing tool, 31: Waterproofing Sheet, 41: Synthetic resin foam plate, 51: Synthetic resin foam member

Claims (8)

A heat insulating material used for repairing an existing roof having a plurality of protrusions arranged in parallel,
The main surface of the synthetic resin foam flat plate has a plurality of groove portions in parallel at regular intervals, and in the cross section in the arrangement direction of the groove portions, the shape of the groove portions is the convex portion separating the two adjacent groove portions. A heat insulating material characterized by being equal to a shape rotated 180 ° within a cross section.   The heat insulating material according to claim 1, wherein the arrangement pitch of the protrusions is equal to an integer multiple of 1 or more of the arrangement pitch of the grooves.   The heat insulating material according to claim 1 or 2, wherein a cross-sectional shape of the groove and the convex is an isosceles trapezoid. One of both end portions of the heat insulating material in the arrangement direction of the groove portions is formed in the groove portion, the other is formed in the convex portion,
In the cross section in the arrangement direction of the groove portions, the length of the bottom portion of the groove portion at the one end portion and the length of the top portion of the convex portion at the other end portion are the groove portions other than the one end portion. 4. The heat insulating material according to claim 3, wherein the heat insulating material is a sum of a length of a bottom portion of the groove portion and a half of a length of the side wall portion of the groove portion in the arrangement direction of the groove portions.   5. The heat insulating material according to claim 1, further comprising an aluminum film on a main surface opposite to a side on which the groove is provided. It is a manufacturing method of the heat insulating material according to any one of claims 1 to 5,
A linear heat ray is arranged in parallel to the main surface of the synthetic resin foam plate having a certain thickness, and the heat ray is moved in a direction perpendicular to the heat ray while moving up and down in the thickness direction of the synthetic resin foam plate. Then, the thickness is divided and the synthetic resin foam plate is melted and cut into two sheets. An existing roof having a plurality of protrusions arranged in parallel;
The heat insulating material according to any one of claims 1 to 5, wherein the groove is disposed on the existing roof with the groove facing downward, and the protrusion is included in the groove.
A modified roof characterized by having at least.   The heat insulating material according to any one of claims 1 to 5, wherein the groove is directed downward and the protrusion is included in the groove on an existing roof having a plurality of protrusions arranged in parallel. A method for constructing a modified roof, characterized in that it is placed and fixed.

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