How to renovate a sash

Abstract

To provide a sash repairing method capable of easily replacing an existing sash fixed to a skeleton opening by an adhesive with a newly installed sash.SOLUTION: The method for repairing a sash having an existing frame fixed to an opening inner peripheral surface of a skeleton opening comprises the steps of: removing an interior material provided on an indoor side of the existing frame; inserting a cutting tool from the indoor side into a gap between the existing frame and the opening inner peripheral surface to cut an adhesive, and removing the existing frame from the skeleton opening; providing a new outdoor seal material 65 at an outdoor side end of the opening inner peripheral surface; disposing a window frame 2B which is a newly installed frame in the skeleton opening, engaging a screw 100 with the skeleton opening from an inner peripheral side of the newly installed frame, and fixing the window frame 2B to the skeleton opening in contact with the outdoor seal member 65; providing an indoor seal material 66 for cutting off water between an indoor side end edge of the window frame 2B and the opening inner peripheral surface from each other; and constructing the interior material on the indoor side of the window frame 2B.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a sash repair method for removing an existing sash attached to an opening in a building frame and installing a new sash. [Background technology]

[0002] Patent Document 1 discloses a wall unit using a panel construction method in which a wall unit is manufactured in a factory by attaching a sash to a frame opening in a building frame with screws, and then this wall unit is transported to a construction site and attached to the building frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-65503 Summary of the Invention [Problem to be solved by the invention]

[0004] A considerable number of screws are required to ensure sufficient fixing strength between the frame of the opening in the main frame and the frame of the sash, which also reduces workability when fixing the screws. Also, when fixing the frame to the frame of the opening in the main frame with screws, the airtight and waterproof structure between the frame and the frame must be formed separately using spacers, packing materials, waterproof sheets, etc., which increases the number of parts and reduces workability. For this reason, the applicant has developed an installation structure that can secure the frame body to the opening frame of the main body using adhesive on all four sides, thereby achieving both an airtight and waterproof structure without using screws or gaskets. However, sashes attached to openings in the framework of a building are required to be replaced with new sashes for repair after a long period of use, etc. For this reason, even sashes that are fixed to their frames using adhesives are required to be replaced with new sashes.

[0005] The present invention provides a sash repair method that allows an existing sash fixed to an opening in a building frame with an adhesive to be easily replaced with a new sash. [Means for solving the problem]

[0006] The present invention is a method for renovating a sash having an existing frame fixed to the inner surface of an opening in a structural body with an adhesive, and is characterized by comprising the steps of: removing interior material applied to the indoor side of the existing frame; inserting a cutting tool into the gap between the existing frame and the inner surface of the opening from the indoor side to cut the adhesive and removing the existing frame from the structural body opening; applying new exterior sealing material to the outdoor end of the inner surface of the opening; placing a new frame in the structural body opening and screwing screws into the structural body opening from the inner side of the new frame to fix the new frame to the structural body opening in a state where it is abutting against the exterior sealing material; applying interior sealing material to waterproof the space between the indoor side edge of the new frame and the inner surface of the opening; and applying interior material to the indoor side of the new frame.

[0007] The present invention is a method for renovating a sash having an existing frame fixed to the inner periphery of an opening in a structural body with adhesive, comprising the steps of: removing interior materials attached to the interior side of the existing frame; inserting a cutting tool into the gap between the existing frame and the inner periphery of the opening from the interior side to cut the adhesive and removing the existing frame from the structural opening; placing a new frame in the structural opening and applying adhesive continuously around four sides between the interior side edge of the new frame and the inner periphery of the opening to fix the new frame to the structural opening; and installing interior materials on the interior side of the new frame. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a sash repair method that can easily replace an existing sash that is fixed to an opening in a frame with an adhesive with a new sash. [Brief explanation of the drawings]

[0009] [Figure 1]This is an interior view of a wall unit including an existing sash. [Figure 2] FIG. 2 is a vertical cross-sectional view of the wall unit. [Figure 3] FIG. 2 is a cross-sectional view of the wall unit. [Figure 4] A vertical cross-sectional view of the upper frame and upper material of the wall unit. [Figure 5] FIG. 2 is a cross-sectional view of the vertical frame and vertical member portions of the wall unit. [Figure 6] 10A to 10C are diagrams illustrating the steps of removing interior materials and cutting adhesive in a sash renovation method. [Figure 7] 10 is a diagram illustrating the process of removing the existing frame from the opening in the main body in a sash renovation method. FIG. [Figure 8] 10A and 10B are diagrams illustrating the process of installing a new outdoor sealing material in the sash renovation method. [Figure 9] This is a diagram explaining the process of fixing a new frame to an opening in the main body in a sash renovation method. [Figure 10] 10A and 10B are diagrams illustrating the process of installing a new interior sealant in the sash renovation method. [Figure 11] This is a vertical cross-sectional view showing a newly installed sash after the repair work has been completed by installing new interior materials using a sash repair method. [Figure 12] This is a cross-sectional view showing a newly installed sash after the renovation work has been completed by installing new interior materials using a sash renovation method. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is an interior view of a wall unit 10 as seen from the indoor side, and Figs. 2 and 3 are longitudinal and horizontal cross-sectional views of the wall unit 10. The wall unit 10 illustrated here is treated as a single structure when attached to a building, and includes a sash 1 and a skeleton opening frame 5, which are fittings. In the following description, the left-right direction of the wall unit 10 is defined as the X-axis direction, the up-down direction of the wall unit 10 is defined as the Y-axis direction, and the projection direction of the wall unit 10 (indoor / outdoor direction) is defined as the Z-axis direction. The X-, Y-, and Z-axis directions are perpendicular to one another.

[0011] 1, the frame 5 for the opening in the main frame comprises a lintel 51 as an upper member, a sill 52 as a lower member, and left and right vertical members 53 and 54. The frame 5 for the opening in the main frame constitutes the opening in the main frame to which the sash 1 is fixed. The sash 1 is an inward-opening window, and is an existing sash 1 that includes an existing window frame 2 and an existing shoji screen 3 that is arranged within the window frame 2 so that it can be opened and closed via hinges 26. The window frame 2 is made up of an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24 that form a framework on all four sides. The shoji screen 3 includes an upper frame 31, a lower frame 32, left and right vertical frames 33, 34, and a surface material 35 that is surrounded by these. Note that in Figures 2 to 6, hatching indicating cross sections of the main structural materials of the window frame 2 and shoji screen 3 has been omitted to make the drawings easier to understand.

[0012] As shown in Figures 2 and 3, the upper frame 21, lower frame 22, and left and right vertical frames 23, 24 of the window frame 2 are made of frame materials with the same cross-sectional shape. These frame materials are made of extruded synthetic resin and have a cross-sectional shape that corresponds to the type of window, which is an inward-opening window. In addition, a recess is formed on the outer peripheral surface of each frame material, i.e., the visible surface facing the frame 5 of the opening in the main body. The vertical frames 23, 24 are provided with brackets 40, which serve as positioning components. The brackets 40 are metal plates, and as shown in Figure 5, the exterior side of the brackets 40 is bent along the visible surfaces of the vertical frames 23, 24 and fastened to the vertical frames 23, 24 with screws 48, while the interior side is bent outward and abuts against the interior surfaces of the vertical members 53, 54 and fastened with screws 49. The brackets 40 position the vertical frames 23, 24, i.e., the window frame 2, in the visible direction relative to the vertical members 53, 54, i.e., the frame 5 of the structural opening. In this embodiment, the exterior-facing surface of the window frame 2 and the exterior surface of the frame 5 of the structural opening are positioned so that they are approximately flush with each other. In this embodiment, the bracket 40 is disposed at the center position in the vertical direction between the vertical frames 23, 24, but it may be disposed at multiple locations depending on the height dimensions of the vertical frames 23, 24. Also, in this embodiment, the top frame 21 is not provided with a bracket as a positioning component, but if, for example, the longitudinal dimension of the top frame 21 is large, that is, if the left-right width dimension of the window frame 2 is large, a bracket may be provided, for example, at the center position in the left-right direction of the top frame 21. 2, a spacer 27 is attached to the recess in the outer peripheral surface of the lower frame 22. As a result, the load applied to the lower frame 22 is supported by the window sill 52 via the lower frame 22 and the spacer 27.

[0013] The shoji screen 3 is constructed by attaching an upper frame 31, a lower frame 32, and left and right vertical frames 33, 34 to the four periphery of a rectangular surface material 35. The upper frame 31, the lower frame 32, and the left and right vertical frames 33, 34 are extruded shapes made of synthetic resin and have the same cross-sectional shape. The surface material 35 is glass. Shoji 3 is an inward-opening window that has a hinge 26 between vertical frame 24 and vertical stile 34 located on the left side when viewed from inside the room, and is configured so that shoji 3 opens toward the room around the hinge axis that runs vertically. A handle 36 is provided on the vertical frame 33 located on the right side when viewed from inside the room, on the surface facing the room.

[0014] As shown in Figure 1, the skeleton opening frame 5 is configured in a frame shape and includes a lintel 51, a window sill 52, and left and right vertical members 53, 54. The upper ends of the vertical members 53, 54 extend upward beyond the lintel 51, and the lower ends of the vertical members 53, 54 extend downward beyond the window sill 52, with horizontal members 55, 56 attached between the upper and lower ends of the vertical members 53, 54, respectively. The lintel 51, window sill 52, left and right vertical members 53, 54, and horizontal members 55, 56 are made of, for example, wood. As shown in Figure 2, heat insulating materials 57 are placed between the upper horizontal member 55 and the lintel 51, and between the window sill 52 and the lower horizontal member 56. In addition, a surface material 58 is attached to the exterior surface of the frame 5 of the opening in the main body. Depending on the relationship between the height dimension of the wall unit 10 and the height dimension of the sash 1, the skeleton opening frame 5 may be configured without providing one or both of the horizontal members 55, 56.

[0015] The lintel 51, vertical members 53, 54, and horizontal members 55, 56 are formed with a rectangular cross section. Meanwhile, the window sill 52 has a shape in which a step 521 is formed on the exterior side of the room. That is, the window sill 52 has an upper surface on which the sill 22 is placed, a vertical surface extending downward from the exterior edge of the upper surface, and a horizontal surface extending from the bottom edge of the vertical surface toward the exterior. This forms a step 521 in the window sill 52, which is defined by the vertical and horizontal surfaces. A waterproof sheet 59 is attached from the upper surface of the window sill 52, across the vertical and horizontal surfaces, to the surface material 58 provided on the exterior side of the window sill 52.

[0016] The upper frame 21 and vertical frames 23, 24 of the window frame 2 arranged on the inner periphery of the frame 5 are fixed to the lintel 51 and vertical members 53, 54 with adhesive 61 on the interior side and adhesive 62 on the exterior side. The lower frame 22 is fixed to the window sill 52 with adhesive 61 on the interior side. In order to smoothly position the window frame 2 within the opening of the frame 5 for ...

[0017] The adhesive 61 on the interior side is applied across the interior surfaces of the upper frame 21, lower frame 22, and vertical frames 23, 24, and the inner surfaces of the lintel 51, window sill 52, and vertical members 53, 54. This adhesive 61 is applied continuously around all four sides along the entire length of the upper frame 21, lower frame 22, and vertical frames 23, 24. Since the adhesive 61 is applied across two surfaces that intersect with the interior surface of the window frame 2 and the inner surface of the opening of the main body opening frame 5, its cross section is generally triangular. For this reason, the adhesive 61 is applied continuously across the bracket 40, even in the area where the thin plate-shaped bracket 40 is arranged. As described above, the adhesive 61 on the interior side fixes the gap between the main body opening frame 5 and the window frame 2 on all four sides in a continuous manner, thereby ensuring airtightness and watertightness and firmly fixing the window frame 2.

[0018] The adhesive 62 on the exterior side is provided across the interior surfaces of the top frame 21 and vertical frames 23, 24 and the exterior surfaces of the lintel 51 and vertical members 53, 54, but is not provided between the bottom frame 22 and the sill 52. In other words, the adhesive 61 is provided along the entire length of the top frame 21 and vertical frames 23, 24, and secures them by continuously sealing the gaps on three sides of the four perimeter, excluding the bottom frame 22, which further improves the airtightness and watertightness of these gaps and also improves the fixing strength of the window frame 2.

[0019] Any adhesive can be used for the adhesives 61 and 62 as long as it can secure the window frame 2 to the main body opening frame 5, and various types of adhesives can be used, such as hot melt, two-part, and moisture-curing adhesives. The adhesives 61 and 62 may be the same or different types. Different types of adhesive 61 may be used depending on the application location, and similarly, different types of adhesive 62 may be used depending on the application location.

[0020] As shown in FIGS. 2 and 3, an upper cover material 81, a drip-proof material 82, and vertical cover materials 83 and 84 are attached to the exterior surface of the frame 5 for opening the main body.

[0021] As shown in Figure 4, the upper cover material 81 is composed of a fixed piece 811 fixed to the surface material 58, a parting piece 812 extending from the fixed piece 811 to the outside of the room, and a covering piece 813 extending downward from the base end side of the parting piece 812. Protruding pieces 8111 and 8112 that protrude toward the inside of the room are formed at the upper edge of the fixing piece 811 and at approximately the middle position in the vertical direction, and the screw 819 that fixes the upper cover material 81 is positioned between the protruding pieces 8111 and 8112. The parting piece 812 has a horizontal surface portion 8121 that continues from the fixing piece 811, an inclined surface portion 8122 that is provided continuously from the horizontal surface portion 8121 and extends diagonally downward, and a vertical surface portion 8123 that extends downward from the outdoor end of the inclined surface portion 8122. In addition, a screw hole 814 is formed in the lower surface of the parting piece 812. A screw (not shown) that connects the vertical cover members 83 and 84 to the upper cover member 81 is screwed into this screw hole 814. The covering piece 813 is formed with a substantially L-shaped cross section with its lower end projecting toward the indoor side. The fixing piece 811 and covering piece 813 of the upper cover material 81 are arranged across the outdoor surface of the main body opening frame 5 and the outdoor surface of the upper frame 21, and are located on the outdoor side of the adhesive 62. For this reason, the upper cover material 81 is used as a covering material that covers the adhesive 62 that fixes the upper frame 21 to the main body opening frame 5 so that it is not exposed to the outdoor side. In addition, because the parting piece 812 is arranged opposite the visible end surface of the exterior material 91 described below, the upper cover material 81 is also used as a parting material that parts off the exterior material 91.

[0022] As shown in Figure 2, the water-repellent material 82 is placed on the step 521 of the windowsill 52 with the waterproof sheet 59 sandwiched between them. The water-repellent material 82 is composed of an inclined piece 821 that extends diagonally downward, a tip 822 that extends downward from the outdoor end of the inclined piece 821, and a fixed piece 823 that is arranged along the surface material 58 and fixed to the surface material 58 and the windowsill 52 with screws 829. Two screw holes are formed on the underside of the inclined piece 821 of the drip-proof material 82. Screws (not shown) that connect the vertical cover materials 83 and 84 to the drip-proof material 82 are threaded into the screw holes on the exterior side. Screws (not shown) that secure cover materials that close the openings on both the left and right ends of the hollow part of the drip-proof material 82 are threaded into the screw holes on the interior side. Furthermore, because a portion of the sill 22 is positioned above the step 521 of the window sill 52, the portion of the flashing material 82 positioned at the step 521 is positioned to overlap the sill 22 in a plan view. As shown in Figures 2 and 5, the outdoor end of the inclined piece 821 protrudes further toward the outdoor side than the vertical cover materials 83, 84, and an end cap 85 is attached to close the small end of this protruding portion. The flashing material 82 is positioned opposite the visible end surface of the exterior material 91, and is therefore also used as a trim material to frame the exterior material 91.

[0023] Since the vertical cover members 83 and 84 have the same cross-sectional shape that is symmetrical on the left and right, the structure will be explained using the vertical cover member 84 shown in FIG. The vertical cover material 84 is composed of a fixed piece 841 fixed to the surface material 58, a parting piece 842 extending from the fixed piece 841 to the outside of the room, and a retaining piece 843 extending from the base end side of the parting piece 842 to the inner periphery side. Protruding pieces 8411 and 8412 that protrude toward the inside of the room are formed on the outer peripheral edge of the fixing piece 841 and at approximately the middle position in the left-right direction, and the screw 849 that fixes the vertical cover materials 83 and 84 is positioned between the protruding pieces 8411 and 8412. The parting piece 842 is formed to have a substantially L-shaped cross section with the outdoor end projecting outward toward the outer periphery. The holding piece 843 has a holding groove 8431 that holds the water-stopping member 86 that abuts against the exterior surfaces of the vertical frames 23, 24. The water-stopping member 86 is made of an AT (airtight) material. The fixing pieces 841 of the vertical cover materials 83, 84 are arranged across the exterior surface of the main body opening frame 5 and the exterior surfaces of the vertical frames 23, 24, and are located on the exterior side of the adhesive 62. Therefore, the vertical cover materials 83, 84 function as covering materials that cover the adhesive 62 that fixes the vertical frames 23, 24 to the main body opening frame 5 so that it is not exposed to the exterior. In addition, because the parting piece 842 is arranged opposite the visible end surface of the exterior material 91, which will be described later, the vertical cover materials 83, 84 are also used as parting materials that part the exterior material 91.

[0024] As shown in FIGS. 4 and 5, waterproof tapes 71, 72 and a waterproof sheet 73 are attached to the exterior surface of the frame 5 for the opening of the main body. The waterproof tape 71 has an adhesive surface on one side facing the surface material 58, and is attached from the surface material 58 to the surface of the adhesive 62. This prevents water from seeping in between the surface material 58 and the adhesive 62. Waterproof tape 72 has adhesive surfaces on both sides and is attached from waterproof tape 71 to the surfaces of upper cover material 81 and vertical cover materials 83 and 84. Waterproof sheet 73 is attached from surface material 58 to the surface of waterproof tape 72. These waterproof tape 72 and waterproof sheet 73 prevent water from seeping in between upper cover material 81, vertical cover materials 83 and 84 and surface material 58.

[0025] As shown in Figures 2 and 3, exterior material 91 is attached to the exterior side of the main body opening frame 5 via vertical furring strips 92 and horizontal furring strips 93. The exterior material 91 is attached except for the opening defined by the upper cover material 81, the water flashing material 82, and the vertical cover materials 83 and 84. Backup material 75 and sealing material 76 are arranged between the exterior material 91 and the upper cover material 81 and the vertical cover materials 83 and 84. Backup material 75 and sealing material 76 are also arranged between the water flashing material 82 and the underside of the lower frame 22. An interior wall material 94 is attached to the indoor side of the skeleton opening frame 5, except for the opening portion where the sash 1 is placed. In addition, a frame 95 that frames the interior wall material 94 is attached around all four sides of the inner peripheral surface of the opening of the skeleton opening frame 5. In other words, the interior wall material 94 and the frame 95 are attached to the indoor side of the skeleton opening frame 5 as interior materials.

[0026] [Wall unit assembly process] Next, the process of assembling the wall unit 10 will be described. The sash 1 is assembled in a manufacturing factory for the sash 1. This assembly method is the same as that for a general sash 1, and therefore a description thereof will be omitted. At the assembly factory for the main body opening frame 5, the lintel 51, window sill 52, left and right vertical members 53, 54, and horizontal members 55, 56 are framed, and the surface material 58 is attached and the heat insulating material 57 is placed to assemble the main body opening frame 5.

[0027] Next, in an assembly factory for the wall unit 10, the sash 1 is attached to the frame 5 of the main body opening to assemble the wall unit 10. The assembly of the wall unit 10 may be carried out in the same factory as the manufacturing factory for the sash 1 or the assembly factory for the frame 5 of the main body opening, or may be carried out in a different factory. To attach the window frame 2 of the sash 1 to the frame 5 of the opening in the main body to form the wall unit 10, the bracket 40 is fixed to the window frame 2 with screws 48, and the bracket 40 is fixed to the frame 5 of the opening in the main body with screws 49 to position the window frame 2. Then, the indoor side of the window frame 2 is fixed to the frame 5 of the opening in the main body with adhesive 61, and the outdoor side of the window frame 2 is fixed to the frame 5 of the opening in the main body with adhesive 62. A waterproof sheet 59 is also attached from the window sill 52 to the surface material 58. The work of discharging the adhesives 61 and 62 can be done manually by an operator, but since the wall unit 10 is assembled in a factory, the work can be automated using a robot or the like.

[0028] [On-site installation of wall units] The above assembly work completes the wall unit 10. The method of transporting this wall unit 10 to a construction site and attaching it to a building such as a house can be the same as in Patent Document 1, so a description thereof will be omitted. After the wall unit 10 is attached to a house or the like, waterproof tape 71 is applied to the surface of the surface material 58 and adhesive 62, and then the upper cover material 81, the water dripping material 82, and the vertical cover materials 83 and 84 are attached. At this time, the upper cover material 81, the water dripping material 82, and the vertical cover materials 83 and 84 may be attached to the frame 5 for opening the main body in a state where they are assembled on all four sides, or each component may be attached to the frame 5 for opening the main body. In addition, before the wall unit 10 is attached to a house or the like, for example, when the wall unit 10 is assembled in a factory, or after the wall unit 10 is transported to a construction site and before it is installed in a house, the waterproof tape 71, the upper cover material 81, the water drainage material 82, and the vertical cover materials 83 and 84 may be attached to the wall unit 10. Furthermore, waterproof tape 72 and waterproof sheet 73 are applied to the surfaces of the upper cover material 81 and vertical cover materials 83, 84, and then vertical furring strips 92 and horizontal furring strips 93 are attached to install the exterior material 91. Then, backup material 75 and sealing material 76 are placed to seal between the exterior material 91 and the upper cover material 81 and vertical cover materials 83, 84, as well as between the lower frame 22 and the flashing material. Finally, interior wall material 94 and frame 95 are attached to the indoor side of the wall unit 10 to complete the installation.

[0029] [How to repair sashes] Next, a method for repairing the sash 1 will be described with reference to Figures 6 to 12. In Figures 6 to 10, (A) is a vertical cross-sectional view of the sash 1 and the frame 5 for opening in the main body, and (B) is a horizontal cross-sectional view of the main part. The method for renovating the sash 1 is to remove the existing sash 1 from the frame 5 of the wall unit 10 attached to the building, that is, the frame opening, and to install a new sash 1B. First, as shown in Figure 6, the interior materials, i.e., the interior wall material 94 and frame 95, are removed, and a cutting tool 200 such as a cutter is inserted into the gap between the main body opening frame 5 and the window frame 2 to cut the adhesive 61, adhesive 62, backup material 75, and sealant 76. The screws 49 that secure the bracket 40 are also removed. Meanwhile, the top cover material 81, the drip-proof material 82, and the vertical cover materials 83 and 84, which serve as parting materials, are left attached to the main body opening frame 5 without being cut.

[0030] Next, as shown in Figure 7, the existing sash 1 is removed from the frame 5 for the opening in the main body toward the interior of the room. Then, the backup material 75 and the sealing material 76 are removed from the surface of the flashing material 82. If adhesive 61 remains on the inner peripheral surface of the opening in the frame 5 for the opening in the main body, this adhesive 61 is also removed. Furthermore, if adhesive 62 remains on the surfaces of the upper cover material 81 and the vertical cover materials 83 and 84 that are exposed to the interior of the room, this adhesive 62 is removed. Note that the adhesive 62 between the upper cover material 81, the vertical cover materials 83 and 84 and the surface material 58 may be left as is.

[0031] Next, as shown in Figure 8, a pre-applied outdoor sealing material 65 is applied to the areas that straddle the upper cover material 81, the vertical cover materials 83 and 84, and the surface material 58 of the lintel 51 and the surface material 58 of the vertical members 53 and 54. The outdoor sealing material 65 is adhesive and is used to ensure watertightness. Next, as shown in Figure 9, the worker places the new sash 1B on the inner periphery of the opening in the skeleton opening frame 5, inserts the screw 100 from the inner periphery side of the window frame 2B, and threads the screw 100 through the window frame 2B and the reinforcing material 28 into the skeleton opening frame 5. This fixes the window frame 2B to the skeleton opening frame 5. At this time, the outdoor-side edges of the top frame 21B and vertical frames 23B and 24B of the window frame 2B are pressed against the outdoor sealing material 65 to make them adhere tightly.

[0032] After the window frame 2B is fixed to the frame 5 of the opening in the main body with screws 100, as shown in Figure 10, a post-application interior sealant 66 is applied across the interior surface of the window frame 2B and the inner peripheral surface of the frame 5 of the opening in the main body. This ensures waterproofing between the new window frame 2B and the opening in the main body. Additionally, a new backup material 75B and sealing material 76B are provided between the water-repellent material 82 and the lower frame 22B, thereby ensuring waterproofing between the water-repellent material 82 and the lower frame 22B. Thereafter, new interior materials, that is, an inner wall material 94B and a frame 95B, are installed as shown in Figures 11 and 12. This completes the renovation to create a new sash 1B.

[0033] The new sash 1B is made up of a new window frame 2B and a new shoji screen 3B. 11 and 12, the new window frame 2B includes an upper frame 21B, a lower frame 22B, and vertical frames 23B and 24B, and a rectangular tubular metal reinforcing member 28 is placed in the hollow portion of each frame. Insertion holes for inserting screws 100 are formed in advance in the inner peripheral surface of the window frame 2B and in the opposing surface of the reinforcing member 28 that faces the inner peripheral surface. The new shoji screen 3B has an upper frame 31B, a lower frame 32B, vertical frames 33B and 34B, and a surface material 35B, and has the same configuration as the existing shoji screen 3.

[0034] [Effects of the embodiment] According to this embodiment, although it is necessary to remove the interior wall material 94 and the frame 95, which are interior materials, the sash can be renovated without removing or destroying the exterior material 91, the upper cover material 81, the drip edge material 82, and the vertical cover materials 83 and 84. Therefore, the existing sash 1 can be renovated into a new sash 1B in a short period of time and at low cost. Since the removal of the existing sash 1 and the installation of the new sash 1B can be performed from the indoor side of the frame 5 of the opening in the main body, workability and safety during renovation can be improved. The existing window frame 2 is fixed to the main frame opening frame 5 with adhesives 61, 62, so it can be easily cut with a cutting tool 200 such as a cutter. Furthermore, the new window frame 2B can ensure watertightness and airtightness with the new exterior sealant 65 and interior sealant 66, and the window frame 2B can be firmly fixed because it is fixed to the main frame opening frame 5 with screws 100. In particular, reinforcing members 28 are placed on the window frame 2B and the heads of the screws 100 are engaged with these reinforcing members 28, so not only can the fixing strength provided by the screws 100 be improved, but the strength of the window frame 2B itself can also be improved. When installing a new sash 1B, the window frame 2B can be positioned in the expected direction by abutting it against the pre-installed outdoor sealing material 65, so there is no need to attach a bracket 40, which is a positioning part, to the window frame 2B, and the bracket 40 can be made unnecessary, improving workability in the application of the post-installed indoor sealing material 66 and the like.

[0035] [Variations] The present invention is not limited to the configurations described in the above embodiments, and modifications within the scope of achieving the object of the present invention are included in the present invention. For example, the newly installed window frame 2B is not limited to being fixed to the structural opening frame 5 with screws 100, but may also be fixed using adhesive, as with the existing window frame 2. That is, at the construction site of the renovation work, instead of applying an interior sealant 66 afterwards, the window frame 2B may be bonded to the structural opening frame 5 by applying an interior-side adhesive 61. When such renovation work is carried out, adhesive 61 is applied continuously around all four sides of the interior side of the window frame 2B, just like with the existing window frame 2, so that not only is the window frame 2B fixed, but watertightness can also be ensured. In this case, a pre-attached exterior sealing material 65 may be provided on the exterior side of the window frame 2B as in the above embodiment, or an exterior adhesive 62 may be provided instead of the pre-attached exterior sealing material 65.

[0036] Furthermore, in the process of removing the interior material attached to the interior side of the existing window frame 2, only the frame 95 may be removed, leaving the interior wall material 94 in place. In this case, workability during renovation can be improved because only the new frame 95B needs to be attached after the new window frame 2B is installed. After removing the screws 49, the bracket 40 can be removed by cutting or bending the bracket 40 and removing the folded portion located between the vertical members 53, 54 and the interior wall material 94 in the X-axis direction.

[0037] The seal between the new sill 22B and the flashing material 82 is not limited to a wet seal structure using backup material 75B and sealant 76B, but a dry seal structure may also be used. Using a dry seal structure eliminates the need for pouring sealant 76B, further improving workability during renovations. Positioning brackets 40 may also be provided on the new window frame 2B, and the window frame 2B may be positioned in the projection direction using the brackets 40.

[0038] The existing sash 1 and the new sash 1B are not limited to being made of synthetic resin, but may be made of extruded shapes made of metal such as aluminum. The existing sash 1 and the new sash 1B are not limited to inward-opening windows, and various types of fixtures can be used, such as fixed windows, outward-opening windows, and casement windows. In the case of fixed windows, the frame material that holds the glass is fixed directly to the opening frame 5 of the main body, so the frame material becomes the frame body. Furthermore, the new sash 1B may be of the same window type and material as the existing sash 1, or may be of a different window type and material.

[0039] [summary] The present invention is a method for renovating a sash having an existing frame fixed to the inner surface of an opening in a structural body with an adhesive, and is characterized by comprising the steps of: removing interior material applied to the indoor side of the existing frame; inserting a cutting tool into the gap between the existing frame and the inner surface of the opening from the indoor side to cut the adhesive and removing the existing frame from the structural body opening; applying new exterior sealing material to the outdoor end of the inner surface of the opening; placing a new frame in the structural body opening and screwing screws into the structural body opening from the inner side of the new frame to fix the new frame to the structural body opening in a state where it is abutting against the exterior sealing material; applying interior sealing material to waterproof the space between the indoor side edge of the new frame and the inner surface of the opening; and applying interior material to the indoor side of the new frame. According to the present invention, sashes can be repaired without removing or destroying exterior materials. Furthermore, since the screw fixing work and seal installation work are tasks that workers normally perform at construction sites, the repair work can be performed easily and reliably.

[0040] The present invention is a method for renovating a sash having an existing frame fixed to the inner periphery of an opening in a structural body with adhesive, comprising the steps of: removing interior materials attached to the interior side of the existing frame; inserting a cutting tool into the gap between the existing frame and the inner periphery of the opening from the interior side to cut the adhesive and removing the existing frame from the structural opening; placing a new frame in the structural opening and applying adhesive continuously around four sides between the interior side edge of the new frame and the inner periphery of the opening to fix the new frame to the structural opening; and installing interior materials on the interior side of the new frame. According to the present invention, sashes can be repaired without removing or destroying exterior materials. Furthermore, because the new sash is attached to the building opening with adhesive that runs continuously around the entire perimeter, the new frame is secured and watertightness is ensured. This reduces the number of work steps required for repairs compared to when the new frame is secured with screws and a seal is applied to ensure watertightness.

[0041] In the sash renovation method of the present invention, a trim material that frames the exterior material is provided on the outside of the existing frame, and in the process of removing the existing frame from the opening in the main body, it is preferable that the trim material be kept attached to the opening in the main body without being cut. Since a trim is provided on the exterior side of the existing frame, a sealant or similar material can be filled between the edge of the exterior material and the trim, ensuring waterproofing while finishing. Furthermore, since the trim is left attached to the frame opening without being cut when the sash is renovated, the sealant filled between the exterior material and the trim can be used as is, improving the ease of renovation work.

[0042] In the sash renovation method of the present invention, a trim material that seals off the exterior material is provided on the outside of the existing frame, and in the process of removing the existing frame from the structural opening, the trim material is maintained attached to the structural opening without being cut, and in the process of providing the exterior sealing material, it is preferable that the exterior sealing material is provided at the corner where the trim material intersects with the inner surface of the opening of the structural opening. Because a trim is installed on the exterior side of the existing frame, sealant or the like can be filled between the edge of the exterior material and the trim, ensuring waterproofing during the finish. Furthermore, because the trim remains attached to the structural opening without being cut when the sash is renovated, the sealant filled between the exterior material and the trim can be used as is, improving the ease of renovation work. Furthermore, because an exterior sealant is installed at the corner where the trim and the inward-facing inner peripheral surface of the structural opening intersect, waterproofing can be improved. [Explanation of symbols]

[0043] 1...sash, 1B...sash, 2...window frame which is the existing frame, 2B...window frame which is the new frame, 3...shoji screen, 3B...shoji screen, 5...frame opening frame which is the frame opening, 10...wall unit, 21...upper frame, 21B...upper frame, 22...lower frame, 22B...lower frame, 23...vertical frame, 23B...vertical frame, 24...vertical frame, 24B...vertical frame, 28...reinforcement material, 31...upper frame, 31B...upper frame, 32...lower frame, 32B...lower frame, 33...vertical frame, 33B...vertical frame, 34...vertical frame, 34B...vertical frame, 35...surface material, 35B...surface material, 48...screw , 49...Screws, 51...Lintel, 52...Window sill, 53...Vertical member, 54...Vertical member, 58...Surface material, 61...Adhesive, 62...Adhesive, 65...Outdoor sealing material, 66...Indoor sealing material, 75...Backup material, 75B...Backup material, 76...Sealing material, 76B...Sealing material, 81...Top cover material, 82...Water dripping material, 83...Vertical cover material, 84...Vertical cover material, 91...Exterior material, 94...Interior wall material, 94B...Interior wall material, 95...Frame, 95B...Frame, 100...Screws, 200...Cutting tools.

Claims

1. A method for repairing a sash having an existing frame fixed to the inner periphery of an opening in a building frame with an adhesive, comprising: a step of removing interior materials provided on the indoor side of the existing frame; a step of inserting a cutting tool into a gap between the existing frame and the inner peripheral surface of the opening from the indoor side to cut the adhesive, and removing the existing frame from the skeleton opening; providing a new exterior seal material at the exterior end of the inner circumferential surface of the opening; a step of placing a new frame in the body opening, and screwing a screw into the body opening from the inner periphery side of the new frame to fix the new frame to the body opening in a state where the new frame is in contact with the outdoor sealing material; a step of providing an indoor sealing material that waterproofs the space between the indoor-side edge of the newly installed frame and the inner peripheral surface of the opening; A step of installing interior materials on the indoor side of the newly installed frame; A sash repair method comprising the steps of:

2. A method for repairing a sash having an existing frame fixed to the inner periphery of an opening in a building frame with an adhesive, comprising: a step of removing interior materials provided on the indoor side of the existing frame; a step of inserting a cutting tool into a gap between the existing frame and the inner peripheral surface of the opening from the indoor side to cut the adhesive, and removing the existing frame from the skeleton opening; a step of placing a new frame in the opening of the main body, and applying adhesive continuously around four peripheries between the interior edge of the new frame and the inner peripheral surface of the opening to fix the new frame to the opening of the main body; A step of installing interior materials on the indoor side of the newly installed frame; A sash repair method comprising the steps of:

3. The sash repair method according to claim 1 or 2, A trim material is provided on the exterior side of the existing frame to cut off the exterior material, In the process of removing the existing frame from the opening in the main body, the trim material is not cut but is maintained in a state attached to the opening in the main body. A sash renovation method characterized by the above.

4. The sash repair method according to claim 1, A trim material is provided on the exterior side of the existing frame to cut off the exterior material, In the step of removing the existing frame from the body opening, the trim material is maintained attached to the body opening without being cut, In the step of providing the exterior sealant, the exterior sealant is provided at a corner where the trim material intersects with the inner circumferential surface of the opening of the body. A sash renovation method characterized by the above.

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