JP2013119706A - Insulation structure and method for constructing insulation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation structure which prevents reduction in nail retainability for a thickened insulation and allows for the blockage of a thermal bridge in the case that an insulation is added as an outer insulation wall, and a method for constructing the insulation structure.SOLUTION: An insulation structure 11 includes a horizontal rail 12 which is fixed to a wall surface with a screw 16, an insulation 13 having a rear face which comes in close contact with the wall surface and has a cutout part 24 for accommodating the horizontal rail 12, a horizontal furring strip 14 fixed to the surface of the insulation 13, and a wall facing material 15 fixed to the horizontal furring strip 14. After the horizontal rail 12 is fixed to an existing wall 1 with the screw 16, the insulation 13 is arranged. The horizontal furring strip 14 is then fixed with a screw 17. Subsequently, the wall facing material 15 is fixed.

Description

  The present invention relates to a heat insulating structure and a method for constructing the heat insulating structure, and more particularly, to a heat insulating structure and a method for constructing the heat insulating structure that are installed on an existing wall or an existing roof in a heat insulation renovation of an existing building.

  Conventionally, as a thermal insulation repair method for an existing building, an external thermal insulation method for adding a thermal insulation structure to the outer wall is known, and in this thermal insulation thermal insulation method, a thermal insulation layer is formed on the outer periphery of the structural frame in order to relax the thermal bridge. Is forming. Or, for the purpose of suppressing internal condensation, it is preferable to form a ventilation layer between the heat insulating material and the wall exterior material. A method of fixing a structural material (such as a stud) with a metal fixing tool such as a nail and using a trunk edge as a base material for a wall exterior material is performed.

  In cold district specifications such as in Hokkaido, the insulation is thickened (for example, 90 mm), and nail and other metal fixtures are removed or loosened (in this specification, screws and screws are also The pitch of metal fixtures has been lowered (the number of metal fixtures is large) because the risk of dripping or falling off of wall exterior materials due to earthquakes or strong winds increases. There is a problem of construction.

  In Patent Document 1, a groove is formed on the surface of the heat insulating material in “External heat insulating method and additional heat insulating method for outer wall of wooden building and additional heat insulating method and its construction method”, and a trunk edge is inserted into this. A method has been proposed in which the trunk edge is fixed to the structural member with a nail through a thin portion of the heat insulating material.

JP 2007-85131 A

  According to the method described in Patent Document 1, it is difficult to perform groove processing of the heat insulating material on the outside at the construction site, and alignment work at the construction site in units of several mm to several cm is difficult. In addition, since a relatively weak heat insulating material is interposed between the trunk edge and the structural material, there is a problem that the nail retention is not sufficient, and the nail penetrates the trunk edge and the heat insulating material. Because this nail is connected to the structural material, this nail becomes a thermal bridge (heat bridge), and heat is easily transferred between the structural material (inside the room) and the wall exterior material or roof base material (outside), There was also a problem that the heat insulation performance deteriorated.

  The purpose of the present invention is to improve the workability at the construction site, prevent deterioration of the nail retention when the insulation is thickened, and block the thermal bridge when adding the insulation with an outer covering. It is providing the heat insulation structure and the construction method of a heat insulation structure.

  The heat insulating structure according to the present invention is a heat insulating structure installed on the outer periphery of a structural frame including a wall and a roof, and includes a reinforcing material, a heat insulating material, and a wall exterior material or a roof base material. The material is provided with a metal fixture for reinforcing material for fixing it to the structural housing, and the heat insulating material has a notch for accommodating the reinforcing material, and is in close contact with the structural housing. The exterior material or the roof base material is provided on the surface of the heat insulating material.

  The reinforcing member may be a horizontal member (horizontal crosspiece) or a vertical member (vertical crosspiece), separated from the heat insulating material, and fixed to the wall surface first. A heat insulating material is divided | segmented into a several part, for example, and the notch part of a heat insulating material is formed because the butt | matching part of these several parts is made into an appropriate shape. The heat insulating material may not be divided into a plurality of parts, and may be an integral part that is not divided by the reinforcing material (or trunk edge). In this case, the reinforcing material (or the trunk edge) is provided at a required position of the integral heat insulating material. A notch corresponding to is formed.

  The material of the reinforcing material is not particularly limited, and a wooden or resin-based material is appropriately used. As the heat insulating material, a foamed plastic heat insulating material having performance equivalent to or equivalent to JIS A9511 is appropriately used. Specifically, phenol resin foam, rigid urethane foam, extruded polystyrene foam, beaded polystyrene foam and the like are used. Face materials such as glass fiber mixed paper, cold paper, woven fabric, non-woven fabric, paper, liner paper, embossed paper, and composite paper may be laminated on both sides of the heat insulating material. The thickness of the heat insulating material is preferably in the range of 15 to 200 mm. It is preferable that the heat insulating material can be easily processed with a cutter, a circular saw or the like on site. The heat insulating materials may all be made of the same material / material, or some of them may be made of different materials / materials. The thickness of the reinforcing material is appropriately set in the range of 1/8 to 7/8 (more preferably 1/4 to 7/8) of the total thickness of the heat insulating material.

  Metal fasteners for reinforcement means tackers, screws, nails, screws, etc., and fix the reinforcement by penetrating the reinforcement from the surface side of the reinforcement to the wall surface (face material, studs, etc.) In the heat insulation structure, it becomes a thermal bridge that facilitates heat transfer between the wall exterior material or roof base material and the existing wall or existing roof, which can be a cause of a decrease in heat insulation. In the heat insulation structure of this invention, since the metal fixture for reinforcement materials is covered with a heat insulation material, it is prevented that the metal fixture for reinforcement materials becomes a thermal bridge.

  The heat insulating material is preferably fixed to the wall surface and the reinforcing material with an adhesive.

  According to the heat insulating structure of the present invention, the reinforcing material can be fixed to the wall surface without interposing the heat insulating material, so that a decrease in nail retention due to the presence of the heat insulating material is prevented. Moreover, since the metal fixture for reinforcement material is covered with a heat insulating material, it is prevented that the metal fixture for reinforcement material becomes a thermal bridge.

  In the heat insulating structure according to the present invention, it is preferable that the trunk edge for ventilation is fixed to the reinforcing member with a metal fixture for the trunk edge, and the wall covering material or the roof base material is fixed to the trunk edge.

  The trunk edge may be a horizontal trunk edge or a vertical trunk edge, but is preferably a horizontal trunk edge. By using the trunk edge, a ventilation layer is formed between the heat insulating material opposed to the trunk edge and the wall exterior material or the roof base material, and air permeability is enhanced. The metal fittings for the fuselage that fix the ventilator's rims mean tucker, screws, nails, screws, etc., and are supposed to lead to the reinforcement, but not to the existing walls or roofs. This prevents the trunk edge metal fixture from becoming a thermal bridge. The trunk edge metal fixture is fixed to the reinforcing member via a heat insulating material. However, since the heat insulating material in this portion is thinned, a decrease in nail retention is suppressed.

  The heat insulation structure construction method according to the present invention is a construction method for attaching a heat insulation structure to an existing wall or an existing roof, wherein the reinforcing material is fixed to the existing wall or the existing roof with a metal fixture for reinforcing material, and then the reinforcement is performed. A heat insulating material is disposed so as to cover the material, and then a wall exterior material or a roof base material is fixed.

  The construction method of the heat insulation structure according to the present invention can be applied to the external heat insulation method of the outer wall without filling with the heat insulating material, and can also be applied to the additional heat insulating method used in combination with the heat insulating material filling. It can also be used when adding heat insulation to an existing roof.

  In order to facilitate construction, the heat insulating material is divided into a plurality of portions having appropriate shapes.

  Before fixing the wall covering material or roof base material, after placing the heat insulating material, fix the ventilating body edge to the reinforcing material with the metal edge fixing metal, and attach the wall exterior material or roof base material to the body edge. It is preferable to fix to.

  The heat insulating material is arranged such that a pair of heat insulating panels having a thickness larger than that of the reinforcing material is in contact with each side surface of the reinforcing material, and then the side surface of one heat insulating panel, the side surface of the other heat insulating panel and the reinforcing material It is preferable to carry out by filling a gap-filling heat-insulating piece in a gap formed between the surface and the surface. Furthermore, an airtight tape is affixed to the joint between the heat insulating panels or the joint between the heat insulating panel and the gap filling heat insulating piece as necessary.

  In this case, the heat insulating material buried in the gap may be an end material of the heat insulating panel, or may be a material other than the heat insulating panel such as glass wool.

  The part of the heat insulating panel that covers the surface of the reinforcing member is integrally provided on one of the pair of heat insulating panels, so that the work of filling the heat insulating piece for filling the gap may be eliminated.

  In order to do this, for example, it is only necessary to cut off the end portion of the heat insulation panel corresponding to the reinforcing material, and such a construction method is preferable when it is easy to cut out the heat insulation material in this way. .

  In addition, the heat insulating material is arranged such that a pair of heat insulating panels for forming the back side heat insulating layer having the same thickness as the reinforcing material is in contact with each side surface of the reinforcing material, and then a pair of heat insulating panels for forming the back heat insulating layer. And you may make it carry out by arrange | positioning the heat insulation panel for front side heat insulation layer formation which covers the surface of a reinforcing material.

  By setting the thickness of the reinforcing material to ½ of the total thickness of the heat insulating material, the back side heat insulating layer and the front side heat insulating layer can be used as separate panels, and construction using the heat insulating panel having the same thickness can be performed. By doing in this way, construction of the part which covers a heat insulating material becomes possible, without providing a notch part.

  According to the heat insulating structure of the present invention, since the reinforcing material can be fixed to the wall surface without using the heat insulating material, the deterioration of the nail retention due to the presence of the heat insulating material is prevented, and the pitch of the metal fixture is lowered. This eliminates the need to improve workability. Moreover, since the metal fixture for reinforcing materials is covered with a heat insulating material, it is prevented from becoming a thermal bridge, and the heat insulating property is improved.

  According to the construction method of the heat insulating structure of the present invention, the reinforcing material is fixed to the existing wall or the existing roof with the reinforcing metal fixture, and then the insulating material is arranged so as to cover the reinforcing material, and then the wall exterior material or Since the roof base material is fixed, the reinforcing material can be fixed to the wall surface without interposing the heat insulating material, so that the deterioration of the nail retention due to the presence of the heat insulating material is prevented, and the pitch of the metal fixture is reduced. Workability is improved by eliminating the need for lowered construction. Further, since the metal fixture for reinforcing material is covered with a heat insulating material, the metal fixture is prevented from becoming a thermal bridge, and the heat insulation is improved.

FIG. 1 is a perspective view showing a first embodiment of a heat insulating structure according to the present invention. FIG. 2 is a vertical sectional view of FIG. FIG. 3 is an enlarged vertical sectional view of the main part of FIG. FIG. 4 is a vertical sectional view showing the procedure of the construction method of the heat insulation structure according to the present invention. FIG. 5 is an enlarged vertical sectional view of an essential part showing a second embodiment of the heat insulating structure according to the present invention. FIG. 6 is an enlarged vertical sectional view of an essential part showing a third embodiment of the heat insulating structure according to the present invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the top and bottom refer to the top and bottom of FIG. As for the front and back, the indoor side is the back and the outdoor side is the front.

  1 to 3 show a first embodiment of a heat insulating structure according to the present invention, in which the heat insulating structure (11) is attached to an existing wall or an existing roof in a structural housing having a wall and a roof. As shown in the figure, the outer wall of the outer wall (reinforcement) (12) fixed to the wall of the existing wall (1) A heat insulating material (13) composed of a plurality of parts (21), (22) and (23), covering the horizontal rail (12) and closely contacting the wall surface, and a horizontal trunk edge (14) fixed to the surface of the heat insulating material (13) ) And a wall exterior material (15) fixed to the lateral trunk edge (14).

  The existing wall (1) consists of an interior material (2), a plurality of studs (3) fixed to the surface of the interior material (2), and a face material (4) fixed to the surface of the studs (3). have.

  The heat insulating material (13) includes a plurality of portions (21), (22), (23), that is, an upper heat insulating panel (21), a lower heat insulating panel (22), and a gap filling heat insulating piece (23). The upper and lower heat insulating panels (21) and (22) have twice the thickness of the horizontal rail (12). As a result, a gap is formed by the lower surface of the upper thermal insulation panel (21), the upper surface of the lower thermal insulation panel (22), and the surface of the horizontal rail (12), and the thermal insulation piece (23) for filling the gap is filled in the gap. It has been. The heat insulating material (13) composed of the upper heat insulating panel (21), the lower heat insulating panel (22), and the gap filling heat insulating piece (23) is a gap between the lower surface of the upper heat insulating panel (21) and the upper surface of the lower heat insulating panel (22). It has a shape having a notch portion (24) formed by the back surface of the heat insulating piece (23) for filling, and the horizontal beam (12) is accommodated in the notch portion (24).

  As shown in FIG. 3, the horizontal beam (12) is formed by a screw (a metal fixture for reinforcing material) (16) extending from the outside of the horizontal beam (12) to the intermediate column (3) through the horizontal beam (12). It is fixed to the existing wall (1). Also, the horizontal trunk edge (14) is a screw (for the trunk edge) extending from the outside of the horizontal trunk edge (14) to the horizontal rail (12) through the horizontal trunk edge (14) and the gap filling heat insulating piece (23). It is fixed to the crosspiece (12) by a metal fixture (17). The upper heat insulating panel (21), the lower heat insulating panel (22), and the gap filling heat insulating piece (23) are fixed to the face material (4) and the horizontal rail (12) with an adhesive.

  In the above, the thickness of the horizontal rail (12) is 45 mm, and the thickness of the upper and lower heat insulating panels (21) and (22) is 90 mm, which is twice that thickness. Therefore, although it has excellent heat insulation performance, when securing 90 mm heat insulation panels (21) and (22) directly to the existing wall (1) with nails, screws, etc., a pitch of 225 mm or less is necessary to ensure nail retention. Construction at is required. On the other hand, in the heat insulating structure (11) according to the present invention, the horizontal beam (12) is fixed to the existing wall (1), and the horizontal trunk edge (14) is fixed to the horizontal beam (12). In fixing the crosspiece (12), no heat insulating material (13) is interposed, and in fixing the horizontal trunk edge (14), only a heat insulating piece (23) for gap filling thinner than the heat insulating material (13) is interposed. Therefore, it is possible to construct the horizontal trunk edge (14) at a pitch of 455 mm or less.

  The construction procedure of the heat insulation structure (11) of the first embodiment (the construction method of the heat insulation structure according to the present invention) is as shown in FIG. 4 in which the stud (3) and the face material (4) are already installed as structural materials. First, fix the crosspiece (12) as a reinforcing material to the existing wall (1) (Fig. 4 (a)) with screws (metal fixtures for reinforcing material) (16) (Fig. 4 (b)). Next, upper and lower heat insulating panels (21) and (22) having a thickness twice as large as the horizontal beam (12) are arranged on the upper and lower sides of the horizontal beam (12), and fixed to the face material with an adhesive. Thereby, a gap (25) having the same size as the horizontal beam (12) is formed between the lower surface of the upper thermal insulation panel (21), the upper surface of the lower thermal insulation panel (22), and the surface of the horizontal beam (12) ( FIG. 4 (c)). Next, the gap (25) is filled by using the end material of the heat insulation panels (21) and (22) as the gap filling heat insulation piece (23) (FIG. 4D). This completes the construction of the heat insulating material (13), and then arranges the horizontal trunk rim (14) for ventilation so that it is parallel to the crosspiece (12), and screws (metal fixtures for the trunk rim) It is fixed to the cross rail (12) by (17) (FIG. 4 (e)). Next, the wall covering material (15) is fixed to the lateral trunk edge (14) with a metal fixing tool for wall covering material (not shown) (FIG. 4 (f)). Thus, the construction of the heat insulating structure (11) on the existing wall (1) is completed.

  The arrangement of the heat insulating material (13) divided into the plurality of portions (21), (22), and (23) is not limited to the first embodiment, and can be appropriately changed. Examples thereof are shown in FIGS. In the embodiment shown in FIGS. 5 and 6, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment of the heat insulating structure (11) according to the present invention shown in FIG. 5, the heat insulating material (13) includes an upper heat insulating panel (31) and a lower heat insulating panel (32). Then, the rear half of the lower end portion of the upper heat insulating panel (31) is cut away, so that a cutout portion (33) for accommodating the cross rail (12) is provided, and the heat insulating piece (23) for gap filling is provided. The portion covering the surface of the corresponding horizontal rail (12) is the back half of the lower end of the upper heat insulating panel (31). Therefore, in this embodiment, the construction can be simplified in that the gap filling heat insulating piece (23) is not necessary.

  In the third embodiment of the heat insulating structure (11) according to the present invention shown in FIG. 6, the heat insulating material (13) is the upper and lower heat insulating panels (41) (42) for forming the back heat insulating layer having the same thickness as the cross rail (12). And a heat insulating panel (43) for forming the front heat insulating layer, and the upper and lower heat insulating panels (41) and (42) for forming the back heat insulating layer are arranged so as to contact the upper surface and the lower surface of the horizontal rail (12). One or a plurality of heat insulating panels (43) for forming a front heat insulating layer are arranged so as to cover the surfaces of the heat insulating panels (41) and (42) and the horizontal rail (12). Therefore, in this embodiment, the notch (44) does not actually cut out the heat insulation panels (41) (42), but the lower surface of the upper heat insulation panel (41) and the upper surface of the lower heat insulation panel (42). The construction can be simplified in that it is not necessary to cut out the heat insulating material (13).

  In the above description, the horizontal beam (12) is used as the reinforcing material, but it may be a vertical beam. Moreover, although the example which provides the heat insulation structure (11) in the existing wall (1) was illustrated, the above-mentioned wall exterior material (15) can be similarly applied to the existing roof by using a field plate (roof base material). It is possible to provide the heat insulation structure (11).

(1) Existing wall
(11) Thermal insulation structure
(12) Horizontal rail (reinforcing material)
(13) Insulation
(14) Horizontal torso edge (torso edge for ventilation)
(15) Wall exterior materials
(16) Screw (metal fixture for reinforcement)
(17) Screws (metal fasteners for trunk edges)
(21) Upper insulation panel
(22) Lower insulation panel
(23) Insulation piece for gap filling
(24) Notch
(31) Upper insulation panel
(32) Lower insulation panel
(33) Notch
(41) (42) Upper and lower thermal insulation panels for forming the rear thermal insulation layer
(43) Insulation panel for front side insulation layer formation
(44) Notch

Claims (7)

  A heat insulating structure installed on the outer periphery of a structural frame with walls and a roof, comprising a reinforcing material, a heat insulating material, and a wall exterior material or a roof base material. A metal fixture for reinforcing material to be fixed to the frame is mounted, and the heat insulating material has a cutout in which the reinforcing material is accommodated, and is in close contact with the structural frame. A heat insulating structure provided on the surface of the heat insulating material.   The trunk edge for ventilation is fixed to the reinforcing material by the metal fastener for the trunk edge through the part of the heat insulating material in which the notch is formed, and the wall exterior material or the roof base material is fixed to the trunk edge. The heat insulating structure according to claim 1, wherein   A construction method for attaching a heat insulating structure to an existing wall or existing roof, fixing the reinforcing material to the existing wall or existing roof with a metal fixture for reinforcing material, and then arranging the insulating material to cover the reinforcing material. Then, the construction method of the heat insulation structure characterized by fixing wall exterior material or a roof base material.   4. The heat insulating material according to claim 3, wherein after the heat insulating material is disposed, the ventilating trunk edge is fixed to the reinforcing member with a trunk metal fixing, and the wall covering material or the roof base material is fixed to the trunk edge. Construction method of structure.   The heat insulating material is arranged such that a pair of heat insulating panels having a thickness larger than that of the reinforcing material is in contact with each side surface of the reinforcing material, and then the side surface of one heat insulating panel, the side surface of the other heat insulating panel, and the reinforcing material. The construction method of the heat insulation structure of Claim 3 or 4 performed by burying the heat insulation piece for clearance gap filling in the clearance gap formed with the surface of this.   6. The heat insulating structure according to claim 5, wherein a work for filling the gap filling heat insulating piece is eliminated by integrally providing a portion covering the surface of the reinforcing material on either one of the pair of heat insulating panels. Construction method.   The heat insulating material is arranged in such a manner that a pair of heat insulating panels for forming the back side heat insulating layer having the same thickness as the reinforcing material is placed in contact with each side surface of the reinforcing material, and then a pair of heat insulating panels for forming the back side heat insulating layer and reinforcement The heat insulation structure construction method according to claim 3 or 4, wherein a heat insulation panel for forming a front heat insulation layer covering the surface of the material is disposed.

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