JP2018031183A - Exterior wall renovation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior wall renovation structure capable of improving thermal insulation performance of the whole exterior wall.SOLUTION: In an exterior wall renovation structure, a new exterior material 30 is arranged on the outdoor side of an existing exterior wall 1. A new frame 4 is arranged on the opening inner-periphery side of an existing frame 2 that is arranged in an opening of the existing exterior wall 1. The new frame 4 is at least partially made of a heat insulation member. A heat insulation layer 80 is provided between the existing exterior wall 1 and the new exterior material 30. The existing frame 2 is covered with the heat insulation member of the new frame 4 and the heat insulation layer 80 so as not to be exposed outdoors.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an outer wall refurbished structure with improved heat insulation performance.

In recent years, there has been a demand for energy-saving houses that improve heat insulation performance and reduce energy consumption used for air conditioning and the like, and in particular, renovation of windows with low heat insulation performance such as single-panel glass windows is spreading.
As a reform that improves the heat insulation performance of the window, a refurbished window (for example, Patent Document 1) in which a new window is installed inside an existing window to form a double window is generally used. This double window can be easily refurbished because the existing window frame and existing shoji are left intact and a new inner window can be installed, and the new inner window frame and shoji fence are made of resin. There is an advantage that heat insulation performance can be improved. On the other hand, when opening a window, two opening / closing operations are required for the newly installed inner window and the existing outer window. For this reason, there existed a subject that it was not suitable for renovation of a window with frequent opening and closing.

On the other hand, in order to renovate an aging window, there is also known a refurbished window of a cover method (for example, Patent Document 2) in which an existing window frame is left and a new window frame is arranged so as to cover the inner peripheral surface of the existing window frame. Yes. Such a refurbished window usually uses a new aluminum window frame, and there has been a problem in improving heat insulation performance.
For this reason, the applicant of the present invention is to open and close by opening the new window frame to be arranged on the inner periphery side of the existing window frame, using resin, and using double-glazed glass, triple glass, etc. We have proposed a refurbished window that is easy to operate and has improved thermal insulation performance.

JP 2011-231506 A JP2015-124544A

By the way, each of the above-mentioned renovated windows only renovates the window part, and the outer wall and the existing frame are left as they are. For this reason, the heat outflow through the existing outer wall or existing frame has not been improved, and there has been a problem that it is difficult to further improve the heat insulation performance of the house. In addition, since the heat flow around the existing frame is large, there is a problem that it is difficult to suppress the occurrence of condensation in the wall around the existing frame.
For this reason, there has been a demand for a renovated outer wall structure that can improve the heat insulation performance of the entire outer wall including windows and suppress the occurrence of condensation around the existing frame.

  An object of the present invention is to provide an outer wall refurbishment structure that can improve the heat insulation performance of the entire outer wall and can suppress the occurrence of condensation around the existing frame.

  In the outer wall renovation structure of the present invention, a new exterior material is disposed on the outdoor side of an existing outer wall of a building, and a new frame is disposed on the inner peripheral side of the opening of the existing frame disposed in the opening of the existing outer wall. The frame is at least partially composed of a heat insulating member, and a heat insulating layer is provided between the existing outer wall and the new exterior material, and the existing frame is outdoors by the heat insulating member and the heat insulating layer of the new frame. It is covered so that it may not be exposed to.

According to the present invention, the new exterior material is arranged on the outdoor side of the existing outer wall, and the heat insulation layer composed of a heat insulating material or the like is provided between the new outer material and the existing outer wall, so that the heat insulation performance of the outer wall portion can be improved. . In addition, since the new frame disposed on the inner peripheral side of the opening of the existing frame is a frame at least partially made of a heat insulating member, the heat insulating performance of the new frame itself can be improved. Furthermore, since the existing frame is covered by the heat insulating member of the new frame and the heat insulating layer of the outer wall portion so as not to be exposed to the outdoors, heat outflow through the existing frame can be reduced. Therefore, the heat insulation performance of the whole outer wall can be improved, and the outer wall renovation structure that can suppress the occurrence of condensation around the existing frame can be provided.
As the heat insulating member of the new frame, a resin or wooden member having higher heat insulating performance than a metal material such as aluminum can be used. In addition, the new frame at least partly composed of a heat insulating member may be a resin frame or a wooden frame as a whole, or a composite frame in which a resin or wooden heat insulating member and a metal member such as aluminum are combined. But you can.

  In the outer wall renovation structure of the present invention, on the inner peripheral side of the opening of the existing frame, the new frame and a new shoji that combines the new frame and the face material, or a face material for a fitting window are disposed, It is preferable that the face material includes a plurality of glasses, and at least one of the plurality of glasses is disposed at a position overlapping the heat insulating layer in the prospective direction.

According to the present invention, since the face material of the new shoji and fitting window arranged in the new frame is configured to include a plurality of glasses, such as double-layer glass and triple glass, Insulation performance can be improved.
Moreover, since at least 1 glass is arrange | positioned in the prospective direction in the position which overlaps with the said heat insulation layer among several glass, on the extension line | wire of the heat insulation line comprised by the said heat insulation layer, by the said some glass The heat insulating line of the constructed face material is located.
And in the new frame and the new frame, the portion disposed between the heat insulating layer and the face material is composed of a heat insulating member such as resin or wood having high heat insulating performance, so that the heat insulating layer, the new frame or the new frame is formed. The heat insulating member and the face material of the bag can form a heat insulating line substantially parallel to the wall surface of the newly installed exterior material, and the heat flow rate can be reduced as compared with the case where the heat insulating line is inclined with respect to the wall surface. That is, when the position of the face material is shifted to the indoor side as compared with the heat insulating layer, the heat insulating line is formed obliquely from the heat insulating layer to the position of the face material. In this case, the joint part between the new exterior material and the new frame, i.e., the part where the existing frame is arranged, tends to cause heat outflow not only from the outdoor surface side but also from the inner peripheral side of the opening where the new frame is arranged, The heat flow rate increases and the heat insulation performance decreases. On the other hand, according to the present invention, the heat insulation line can be formed on the outdoor side of the existing frame, and the temperature drop on the inner peripheral side of the existing frame can be suppressed, so the heat flow on the inner peripheral side of the existing frame is reduced. It is possible to improve the heat insulation performance, and it is also effective for suppressing condensation in the wall.

  In the outer wall renovation structure of the present invention, the outdoor side end portion of the new frame is positioned at least on the outdoor side from the indoor surface of the new exterior material, from the outdoor surface of the new exterior material to the indoor end portion of the existing frame. Is preferably smaller than the expected dimension from the outdoor surface of the new exterior material to the indoor end of the new frame.

According to the present invention, since the outdoor side end portion of the new frame is located on the outdoor side with respect to the outdoor surface of the new exterior material, the new frame and the new exterior material can be arranged to face each other, and the sealing is between them. It can be filled and sealed with materials. For this reason, a new installation frame can be utilized as a parting material of a new installation material, and can be made into a general storage structure.
In addition, the expected dimension from the outdoor surface of the new exterior material to the indoor edge of the existing frame is smaller than the expected dimension from the outdoor surface of the new exterior material to the indoor edge of the new frame. Can be covered with a new frame, and the heat insulation performance and design can be improved.

  In the outer wall refurbishment structure of the present invention, an outer peripheral surface of the new frame is configured by a plane along a prospective direction, and an installation piece projects toward an indoor direction at an indoor side end of the new frame, It is preferable that the frame is attached so that the position in the indoor / outdoor direction can be adjusted by a screw screwed into the building frame from the mounting piece.

According to the present invention, since the outer peripheral surface of the new frame is formed in a plane along the prospective direction, the position of the new frame in the indoor / outdoor direction can be freely set according to the thickness dimension of the new exterior material. . If nail fins protrude from the outer peripheral surface of the new frame, it is necessary to prepare multiple types of new frames with different nail fin positions depending on the thickness of the new exterior material. In the invention, since the nail fins are not provided in the new frame, the types of the new frame can be reduced.
In addition, since the new frame is fixed by screwing screws into the building frame from the mounting pieces protruding from the indoor side end of the new frame toward the indoor direction, the new frame is installed from the inner periphery of the opening. The renovation work can be easily performed.

  According to the outer wall renovation structure of the present invention, the heat insulating performance of the entire outer wall can be improved, and the occurrence of condensation around the existing frame can be suppressed.

The longitudinal cross-sectional view which shows the outer wall renovation structure of 1st Embodiment of this invention. The cross-sectional view which shows the outer wall renovation structure of 1st Embodiment. The perspective view which shows the principal part of the outer wall renovation structure of 1st Embodiment. The cross-sectional view which shows the principal part of the outer wall renovation structure of 1st Embodiment. The longitudinal cross-sectional view which shows the outer wall renovation structure of 2nd Embodiment of this invention. The cross-sectional view which shows the outer wall renovation structure of 2nd Embodiment. The perspective view which shows the principal part of the outer wall renovation structure of 2nd Embodiment. The longitudinal cross-sectional view which shows the principal part of the 1st modification of this invention. The longitudinal cross-sectional view which shows the principal part of the 2nd modification of this invention.

[First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the present embodiment is an outer wall renovation structure in which the existing outer wall 1 and the existing frame 2 of the building are left and the new outer wall 3, the new frame 4, and the new shoji 5 are newly attached and renovated.
In the following description, when the existing frame 2 and the new frame 4 are viewed from the indoor side, the vertical direction is the vertical direction, the horizontal direction is the horizontal direction, and the indoor / outdoor direction is the prospective direction. To do. Further, the existing frame 2 and the new frame 4 are framed in a rectangular shape, and the surface facing the inner peripheral side of the frame will be described as the inner peripheral surface, and the surface facing the outer peripheral side will be described as the outer peripheral surface.
In addition, in the cross-sectional views of the frame member, the frame member, the glass, and the like of the existing frame 2, the new frame 4, and the new shoji 5, hatching is omitted for easy viewing of the drawing.

  The building includes a housing 10 that supports the existing outer wall 1 and the existing frame 2. The housing 10 includes, for example, pillars and studs arranged at appropriate intervals, and a window stand and a lintel that are spanned between the pillars and the studs to partition the window opening.

[Existing outer walls and existing frames]
An existing outer wall 1 and an existing frame 2 are fixed to the housing 10.
The existing frame 2 is configured by a framework of an existing upper frame 21, an existing lower frame 22, and left and right existing vertical frames 23 and 24. The cross-sectional shape of each of the frames 21, 22, 23, and 24 varies depending on the type of existing window, and the existing frame 2 of the present embodiment is for a sliding window.

Each of these frames 21, 22, 23, 24 is provided with nail fins 21 A, 22 A, 23 A, 24 A that abut on the outdoor surface of the housing, and nails are driven into the housing from the nail fins 21 A, 22 A, 23 A, 24 A. Thus, the existing frame 2 is attached to the housing 10.
On the indoor side of the existing frame 2, an existing frame 26 is attached along the inner peripheral surface of the window opening. The existing frame 26 is in contact with the end face of the interior material 27 that covers the indoor side of the housing 10.
The existing outer wall 1 is disposed on the outer peripheral surface of the existing frame 2, and the end surface of the existing outer wall 1 and the existing frame 2 are sealed with a sealing material 28 and waterproofed.

[New wall]
A new outer wall 3 is provided on the outdoor side of the existing outer wall 1 by refurbishment. The new outer wall 3 includes a new heat insulating material 31 disposed on the outdoor side of the existing outer wall 1, a trunk edge (vertical trunk edge in the present embodiment) 32 disposed on the outdoor side of the new heat insulating material 31, and a trunk edge 32. And a new exterior material 30 disposed on the outdoor side.
The new heat insulating material 31 is a general heat insulating material used in an outer heat insulating method such as a heat insulating material obtained by foaming polystyrene resin or phenol resin.
The new exterior material 30 is an exterior material composed of various materials such as ceramics, concrete, ALC (lightweight cellular concrete), and metal.

[New windows]
A new window is attached to the inner peripheral surface of the opening of the existing frame 2. The new window of this embodiment is a continuous window of a FIX window and a vertical sliding window. The new window includes a new frame 4 and a new shoji 5.
The new frame 4 includes a new upper frame 41, a new lower frame 42, new vertical frames 43 and 44, and a vertical bone (center bone) 45.
The FIX window is constructed by incorporating a face material made of triple glass 47 into a window frame formed by framing a new upper frame 41, a new lower frame 42, a new vertical frame 44, and a vertical bone 45. Is done. The triple glass 47 is held by the frames 41, 42, 44, the vertical bone 45, and the ledge 46 attached to them.

The vertical sliding window is constructed by attaching the new shoji 5 in an openable and closable manner within a window frame constructed by a new upper frame 41, a new lower frame 42, a new vertical frame 43, and a vertical bone 45. Is done.
The new shoji 5 is a face material made of a new glass frame made up of a plastic upper frame 51, a lower frame 52, and left and right vertical frames 53, 54, and a triple glass 57 incorporated in the new frame. It consists of and. The triple glass 57 is held by each of the flanges 51, 52, 53, 54 and a pressing edge 56 attached thereto.
The new window is made of resin (synthetic resin) in the new frame 4 and the new shoji 5 ridges 51, 52, 53, 54, and the face material is made of triple glass 47, 57. It is considered a high window. Note that each of the flanges 51, 52, 53, and 54 of the present embodiment is made of an extruded shape made of resin having the same cross section, and has a plurality of hollow portions to improve heat insulation performance.

[New frame]
The new upper frame 41, the new lower frame 42, and the new vertical frames 43 and 44 are made of a resin extruded shape. Therefore, in this embodiment, the whole new frame 4 is comprised with the heat insulation member (resin member). In the present embodiment, the frames 41, 42, 43, and 44 are extruded sections having the same cross-sectional shape, but the shape of each frame is set according to the type of window and is not necessarily limited to that having the same cross-sectional shape. .
Moreover, each frame 41,42,43,44 is provided with the 1st-4th hollow part located in a line from the outdoor side along the prospective direction, and is improving the heat insulation and rigidity of frame itself.
The outdoor end face of the first hollow portion is disposed on substantially the same plane as the outdoor face of the new exterior member 30. The second hollow portion has a larger size than the first hollow portion and protrudes to the inner peripheral side from the first hollow portion. An engagement groove in which the pressing edge 46 can be mounted is formed on the inner peripheral surface of the second hollow portion.
The third hollow portion has the same size as the second hollow portion, and the expected size is the same size as the existing frame 2. In the third hollow portion of the new upper frame 41 and the new lower frame 42, a metal plate for fixing the sliding arm for opening and closing the new shoji 5 is arranged.
The fourth hollow portion has the same size as the third hollow portion. On the inner peripheral side of the fourth hollow portion, there are provided a holding piece for the triple glass 47 of the FIX window and protrusions 41A, 42A, 43A, 44A that serve as a door stop portion of the new shoji 5.
The vertical bone 45 includes three hollow portions (second to fourth hollow portions) corresponding to the second hollow portion to the fourth hollow portion of each of the frames 41, 42, 43, and 44. The second hollow portion of the vertical bone 45 is formed with an engaging groove for the pressing edge 46, the third hollow portion is provided with a metal plate (channel material) to which components such as a lock receiver are attached, and the fourth hollow portion is provided with Two projecting portions 45A projecting in the left-right direction are formed.

The outer peripheral surfaces of the newly installed upper frame 41, the newly installed lower frame 42, and the newly installed vertical frames 43 and 44 are flat and have fin portions corresponding to the nail fins 21A, 22A, 23A, and 24A of the existing frame 2. Absent.
At the indoor side ends of the frames 41, 42, 43, and 44, mounting pieces 411, 421, 431, and 441 projecting to the indoor side are formed, and the mounting pieces 411, 421, 431, and 441 are attached by screws 15. It is attached to the housing 10. Therefore, the screw 15 is screwed in a direction orthogonal to the prospective direction of the new frame 4 (the direction in which the frames 41, 42, 43, 44 are found).
Thus, since the new frame 4 has no nail fins and is attached to the housing 10 by screwing the screw 15 in the direction of finding, it can be attached to the housing 10 so that the position in the indoor / outdoor direction (prospective direction) can be adjusted. In the present embodiment, the position of the new frame 4 is adjusted so that the outdoor surface of the new frame 4 (the end surface of the first hollow portion) is substantially aligned with the outdoor surface of the new exterior material 30.

Furthermore, as shown in FIG. 4, the length dimension L1 of the prospective method from the outdoor surface of the new exterior material 30 to the indoor side edge of the existing frame 2 is the indoor side of the new frame 4 from the outdoor surface of the new exterior material 30. It is set to be smaller than the length dimension L2 of the prospective method to the edge. For this reason, the new frame 4 covers the inner peripheral surface of the existing frame 2.
In this embodiment, since the outdoor surface of the new exterior material 30 is in the same prospective position as the outdoor surface of the new frame 4, the new frame 4 (new upper frame 41, new lower frame 42, new vertical frame) 43, 44) is also the dimension L2.
The prospective direction dimension L <b> 2 of the new frame 4 is set so that the mounting pieces 411, 421, 431, and 441 are located on the indoor side of the existing frame 2. That is, the projecting dimensions of the mounting pieces 411, 421, 431, and 441 are equal to or larger than the dimension (L2-L1). For this reason, the screw 15 screwed from the mounting pieces 411, 421, 431, 441 is screwed into the housing 10 via the existing frame 26 and the like at a position on the indoor side of the existing frame 2.

  As shown in FIGS. 1 and 2, a new wooden frame 36 is arranged along the existing frame 26 on the indoor side of the new frame 4. A new cover material 38 is stretched between the new frame 36 and the interior material 27. The new cover member 38 covers the existing frame 26 so that it is not exposed to the indoor side.

[Draining material]
As shown in FIGS. 1 and 3, a draining material 60 made of an aluminum extruded profile or the like is attached to the outer peripheral surface (upper surface) of the new upper frame 41. For this reason, a space for disposing the draining material 60 is secured between the new exterior material 30, the new heat insulating material 31, the lower end surface of the trunk edge 32, and the new upper frame 41.
As shown in FIG. 3, the draining material 60 includes a fixed portion 61 fixed to the new upper frame 41 with screws, rivets and the like, a rising portion 62 extending upward from the fixing portion 61, and an upper end of the rising portion 62. To the outdoor side of the newly installed upper frame 41, and an inclined portion 63 that is inclined downward and set a downward gradient toward the outdoor direction, and a draining portion 64 that extends downward from the tip of the inclined portion 63. And.

A dry sealing material 65 is attached between the new upper frame 41 and the draining portion 64.
A backup material 66 and a wet sealing material 67 are filled between the inclined portion 63 and the new exterior material 30. A drainage part 68 having a drainage hole is disposed in part of the backup material 66 and the wet sealing material 67.
Further, a water draining waterproof sheet 75 to be described later is stretched between the inclined portion 63 of the draining material 60 and the existing upper frame 21 and the new heat insulating material 31, and the rear surface side (indoor surface side) of the new exterior material 30. ) Enters the inclined portion 63 from the draining waterproof sheet 75 and is drained through the drainage part 68.
Instead of providing the drainage part 68, the wet sealing material 67 and the backup material 66 may be provided with a notch portion serving as a drainage hole so that the water can be drained.

[New frame fixing structure]
In the present embodiment, the height dimension of the new frame 4 is designed to be smaller than the opening height dimension of the existing frame 2 so that the new frame 4 can be easily arranged in the existing frame 2. For this reason, when the new frame 4 is installed on the existing lower frame 22, a predetermined gap is generated between the new upper frame 41 and the existing frame 2. Therefore, as shown in FIGS. 1 and 3, an adjustment member (a manger) 415 having a thickness according to the gap is disposed between the newly installed upper frame 41 and the existing frame 2. Further, since there is a step between the lower surface of the existing upper frame 21 and the lower surface of the existing frame 26, a gap is also generated between the adjustment member 415 and the existing frame 26, and the adjustment member 416 is formed in this gap portion. Is arranged.

As shown in FIG. 1, the new lower frame 42 is disposed so as to contact the upper surfaces of the existing lower frame 22 and the new heat insulating material 31. The existing lower frame 22 of the present embodiment is for a sliding window, and the position of the outer rail is lower than that of the inner rail. Therefore, a support bracket 221 that contacts the lower surface of the new lower frame 42 is attached to the existing lower frame 22. The support bracket 221 is composed of two parts so that the height can be adjusted. The support bracket 221 may be formed and arranged in a length similar to the entire length of the existing lower frame 22 in the longitudinal direction (the left-right direction of the existing frame 2). However, in the present embodiment, the support bracket 221 has a short piece shape. It is formed and attached to a plurality of locations on the existing lower frame 22. Since the support bracket 221 is provided, the load of the newly installed lower frame 42 can be supported, and the hanging of the newly installed lower frame 42 can be prevented.
Further, an adjustment member 426 for eliminating a step from the upper surface of the existing lower frame 22 is disposed on the existing frame 26.
The outdoor end of the newly installed lower frame 42 extends to the position of the newly installed exterior material 30, and a backup material 66 and a wet sealing material 67 are filled between the newly installed lower frame 42 and the newly installed exterior material 30. .

As shown in FIG. 2, the new vertical frames 43 and 44 are arranged on the inner peripheral side of the existing vertical frames 23 and 24. Plate-shaped adjusting members 435 and 445 are also arranged between the newly installed vertical frames 43 and 44 and the existing frame 26. Thereby, the width dimension of the new frame 4 in the left-right direction is made smaller than the dimension between the existing vertical frames 23 and 24 and is adjusted by the adjustment members 435 and 445, so that the new frame 4 is also installed in the width direction. It can be easily arranged in the frame 2.
The outer peripheral surfaces (side surfaces) of the new vertical frames 43 and 44 are in contact with the adjustment members 435 and 445 and the new heat insulating material 31. On the other hand, the new exterior material 30 and the trunk edge 32 are arranged away from the outer peripheral surfaces of the new vertical frames 43 and 44. A backup material 66 and a wet sealing material 67 are filled between the newly installed vertical frames 43 and 44 and the newly installed exterior material 30.

[Waterproof structure]
Next, the waterproof structure in this embodiment is demonstrated based on FIGS. In the present embodiment, a waterproof sheet 71 for the outer wall, an airtight waterproof sheet 72 that blocks air from flowing between the existing frame 2 and the new frame 4, and a draining waterproof sheet 75 that guides water to the draining material 60, Three types of waterproof sheets are provided.
In addition, as a waterproof sheet, there are a moisture-permeable waterproof sheet that does not allow water to pass but moisture such as water vapor, and an air-tight waterproof sheet that does not allow water, water vapor, and air to pass (also referred to as a moisture-proof and air-tight sheet or an air-tight sheet), The type is selected according to the function required for the waterproof sheet. In the present embodiment, a trunk layer 32 is provided between the new exterior material 30 and the new heat insulating material 31 to form a ventilation layer, and moisture (water vapor) in the existing outer wall 1 is removed from the new heat insulating material 31 and the air ventilation. The waterproof sheet 71 is a moisture permeable waterproof sheet so that it can escape to the outside through the layers. Further, the airtight waterproof sheet 72 and the drainage waterproof sheet 75 are airtight waterproof sheets.
1, 2, and 4, the waterproof sheet 71 is indicated by a broken line, and the airtight waterproof sheet 72 and the draining waterproof sheet 75 are indicated by a thick solid line so that the respective waterproof sheets can be easily distinguished from each other.
Moreover, each waterproof sheet 71, 72, 75 has flexibility like a general waterproof sheet, and is comprised so that it can be bent along the existing frame 2 grade | etc.,.

[Waterproof sheet for outer wall]
In the outer wall portion, an existing waterproof sheet or the like is provided on the back side of the existing outer wall 1. However, this existing waterproof sheet may be deteriorated. For this reason, at the time of refurbishment, a waterproof structure 71 is installed on the outer wall of the building by installing a new waterproof sheet 71. That is, the waterproof sheet 71 is bonded between the existing outer wall 1 and the new heat insulating material 31. This waterproof sheet 71 constitutes a waterproof layer provided on the back side of the newly installed exterior material 30.
As shown in FIG. 1, the end of the waterproof sheet 71 disposed between the existing upper frame 21 and the new heat insulating material 31 is on the outdoor side of the airtight waterproof sheet 72 and the water draining waterproof sheet 75 as will be described later. It is arranged overlapping. Further, the end portion of the waterproof sheet 71 disposed between the existing lower frame 22 and the new heat insulating material 31 is disposed so as to overlap the indoor side of the airtight waterproof sheet 72. That is, in the continuous portion of the waterproof sheet that is continuous in the vertical direction, the upper waterproof sheet overlaps the outdoor side of the lower waterproof sheet, and when the water flows down, it flows on the outdoor surface side of the waterproof sheet.
As shown in FIG. 2, the end portion of the waterproof sheet 71 disposed between the existing vertical frames 23 and 24 and the new heat insulating material 31 is disposed so as to overlap the outdoor side of the airtight waterproof sheet 72. The overlapping portions of these waterproof sheets 71, 72, 75 are bonded to each other with a double-sided tape or the like.

[Sealing waterproof sheet]
An airtight waterproof sheet 72 is provided between the existing frame 2 and the new frame 4. The airtight waterproof sheet 72 has a function of causing the polymer absorber to swell and swell water that is about to enter through a through-hole or the like, thereby blocking the through-hole, for example, with a water stop function manufactured by 3M Japan Ltd. An outer wall waterproof sheet 2407 or the like can be used.
The airtight waterproof sheet 72 that connects between the existing frame 2 and the new frame 4 is disposed along the four inner circumferential surfaces of the existing frame 2 and is sealed so that air does not flow between the existing frame 2 and the new frame 4 in the indoor and outdoor directions. doing.
That is, as shown in FIGS. 1 and 3, the airtight waterproof sheet 72 is affixed to the outdoor surface of the existing upper frame 21 with a double-faced tape or the like between the existing upper frame 21 and the new upper frame 41. The adjustment member 416 is folded indoors along the inner peripheral surface (lower surface). The indoor side end portion of the airtight waterproof sheet 72 is bent along the indoor surface of the adjustment member 415 and the mounting piece 411, is further folded outward along the inner peripheral surface of the mounting piece 411, and double-sided tape is attached to the mounting piece 411. It has been pasted.

  As shown in FIG. 1, the airtight waterproof sheet 72 is attached to the outdoor surface of the waterproof sheet 71 attached to the outdoor surface of the existing lower frame 22 with a double-sided tape or the like between the existing lower frame 22 and the newly installed lower frame 42. The support bracket 221, the existing lower frame 22, and the adjustment member 426 are disposed along the upper surface. The indoor side end of the airtight waterproof sheet 72 is bent along the outdoor surface of the mounting piece 421, further folded back along the inner peripheral surface of the mounting piece 421, and attached to the mounting piece 421 with a double-sided tape or the like. It has been.

As shown in FIGS. 2 and 4, the airtight waterproof sheet 72 is attached between the existing vertical frames 23 and 24 and the new vertical frames 43 and 44 on the outdoor surface of the existing vertical frames 23 and 24 with a double-sided tape or the like. Arranged along the inner surfaces of the vertical frames 23 and 24 and the existing frame 26. The indoor side end portion of the airtight waterproof sheet 72 is bent along the outdoor surface of the adjustment members 435 and 445, is further folded back to the inner peripheral surface of the attachment pieces 431 and 441, and is attached to the attachment pieces 431 and 441 with a double-sided tape or the like. It is attached.
The indoor side edge of the airtight waterproof sheet 72 is hidden so as not to be exposed to the indoor side by the new frame 36 arranged along the inner peripheral surface of the mounting pieces 411, 421, 431, 441 of the new frame 4. .

[Waterproofing sheet for draining]
As shown in FIGS. 1 and 3, a draining waterproof sheet 75 is provided from the existing upper frame 21 to the draining material 60. The draining waterproof sheet 75 is an airtight sheet similar to the airtight waterproof sheet 72. The indoor end of the water draining waterproof sheet 75 is attached to the surface (outdoor surface) of the airtight waterproof sheet 72 attached to the outdoor surface of the existing upper frame 21 with a double-sided tape or the like. Note that the end portion of the waterproof sheet 71 disposed between the new heat insulating material 31 and the existing outer wall 1 is between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31, and the surface of the waterproof sheet for draining water 75 (outdoor Surface) with a double-sided tape. That is, between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31, an airtight waterproof sheet 72, a draining waterproof sheet 75, and a waterproof sheet 71 are laminated from the indoor side.

The outdoor side end of the draining waterproof sheet 75 is attached to the surface of the inclined part 63 of the draining material 60 with a double-sided tape or the like at a position lower than the indoor side end of the draining waterproof sheet 75. For this reason, the water draining waterproof sheet 75 is provided continuously to the waterproof sheet 71 at the indoor side end, and the surface of the water draining waterproof sheet 75 has a downward slope from the indoor type end to the outdoor side end. It is provided to become.
Therefore, rainwater that has entered between the newly-installed heat insulating material 31 and the existing outer wall 1 flows along the waterproof sheet 71, flows from the draining waterproof sheet 75 onto the inclined portion 63 of the draining material 60, and from the draining part 68 to the outdoor side. Drained.

[Insulation structure]
Next, the heat insulation structure in this embodiment is demonstrated.
A heat insulating layer 80 is formed between the existing outer wall 1 and the new exterior material 30. The heat insulating layer 80 is mainly composed of the new heat insulating material 31, and the air gap 81 defined by the airtight waterproof sheet 72 and the water draining waterproof sheet 75 is formed between the new upper frame 41 and the new heat insulating material 31. Yes.
The air layer 81 is a space surrounded by the airtight waterproof sheet 72, the draining waterproof sheet 75, the draining material 60, and the newly installed upper frame 41, and has a small volume that does not cause air convection. For this reason, the air layer 81 also functions as the heat insulating layer 80.
Further, the newly installed heat insulating material 31 is in contact with the newly installed lower frame 42 and the newly installed vertical frames 43 and 44. For this reason, the heat insulation layer 80 which continues to the new installation frame 4 is comprised by the new heat insulation 31 and the air layer 81 in the outer wall part.
The heat insulating layer 80 (the new heat insulating material 31 and the air layer 81) covers the outdoor surface of the existing frame 2, and a heat insulating line is formed on the outdoor side of the existing frame 2. It is possible to reduce the heat flow that is transmitted to the frame, and even when the outside air temperature is low, it is possible to suppress the temperature of the existing frame 2 made of the extruded aluminum material from being lowered and causing condensation.

In the new window, the heat insulation performance is ensured by using the new resin frame 4, the resin cages 51, 52, 53, 54 and the triple glasses 47, 57. In particular, in the new window, in the face material having the largest area that touches the outdoor air, the heat insulating performance is enhanced by adopting the triple glass 47, 57, and the indoor and outdoor heat along the triple glass 47, 57 is improved. An insulation line that reduces the flow rate is configured.
Further, the new frame 4 and the flanges 51, 52, 53, 54 are also made of resin, and further provided with a plurality of hollow portions arranged in the direction of finding, thereby improving the heat insulation performance.

Here, as shown in FIG. 4, at least one glass of the triple glasses 47 and 57 is disposed in a heat insulation line connecting the new heat insulating materials 31 in the opening portion where the new windows are disposed.
In the triple glass 47 of the FIX window, the glass 471 disposed on the most outdoor side is disposed at a position overlapping the heat insulating layer 80 in the prospective direction. That is, the glass 471 disposed on the most outdoor side of the triple glass 47 is disposed between the virtual surface S1 on the extension line of the outdoor surface of the new heat insulating material 31 and the virtual surface S2 on the extension line of the indoor surface. ing.
In the triple glass 57 of the newly constructed shoji 5 of the sliding sliding window, the glass 571 arranged on the most outdoor side and the glass 572 arranged in the middle are arranged at a position overlapping the heat insulating layer 80 in the prospective direction. That is, the glasses 571 and 572 are disposed between the virtual surface S1 and the virtual surface S2.
Therefore, at least one glass of the triple glasses 47 and 57 which are the face materials provided in the new window is arranged at a position where it overlaps (overlaps) the heat insulation line, that is, a position where the heat insulation layer 80 overlaps in the prospective direction. Yes.
For this reason, a heat insulation line is formed along the outer wall surface by the heat insulation layer 80, the new frame 4, the new shoji 5 (框 51-54 and the triple glass 57) and the triple glass 47 arranged in the new frame 4. Has been.

  The new frame 4 is disposed so as to cover the inner peripheral surface of the existing frame 2. For this reason, the inner peripheral surface of the existing frame 2 is covered with a new frame 4 made of resin (made of a heat insulating member) having high heat insulating performance. Therefore, since the outdoor surface and the inner peripheral surface of the existing frame 2 are covered with the heat insulating layer 80 and the new frame 4 provided continuously to the heat insulating layer 80 and do not come into contact with the outside air, The heat flow transmitted to the existing frame 2 can also be reduced, and even when the outside air temperature is low, it is possible to suppress the temperature of the existing frame 2 made of the extruded aluminum material from being lowered and causing condensation.

[Renovation method]
Next, the construction method of the outer wall renovation structure of this embodiment will be described.
First, the shoji (not shown) of the existing fixture is removed from the existing frame 2. Further, the adjustment members 416 and 426 are attached in advance, and the steps between the existing upper frame 21, the existing lower frame 22, and the existing frame 26 are eliminated.
And the airtight waterproof sheet 72 is affixed on the outdoor surface of the existing frame 2, and the affixing process of the outdoor side edge part of the airtight waterproof sheet (airtight sheet) 72 is performed around the building opening. In addition, since the waterproof sheet 71 is previously attached to the existing lower frame 22 portion, the outdoor side end of the airtight waterproof sheet 72 is attached to the surface of the waterproof sheet 71.
The airtight waterproof sheet 72 can be used in the form of a strip (tape), and one side (outdoor side end) of the two sides in the longitudinal direction of the tape-like airtight waterproof sheet 72 is connected to each frame 21, Affix with adhesive tape along the outdoor surface of 22, 23, 24. For example, affixing of the airtight waterproof sheet 72 is started from the center in the left-right direction of the existing upper frame 21, and the airtight waterproof sheet 72 is sequentially applied from the existing upper frame 21 to the existing vertical frame 23, the existing lower frame 22, and the existing vertical frame 24. The airtight waterproof sheet 72 is pasted to a position overlapping the pasting start position of the existing upper frame 21. As will be described later, the airtight waterproof sheet 72 is a waterproof sheet 71, that is, a waterproof sheet continuous with the waterproof layer.
In addition, what is necessary is just to cut in the outer peripheral side of the airtight waterproof sheet 72, and to change a direction, when changing the sticking direction of the airtight waterproof sheet 72 in the corner part of the existing frame 2 90 degree | times. The cut portion of the airtight waterproof sheet 72 is covered with another waterproof tape.

  Next, the other side of the airtight waterproof sheet 72 is folded inward along the inner peripheral surface of each of the frames 21, 22, 23, 24, and the airtight waterproof sheet (airtight sheet) 72 is folded into the inner periphery of the building opening. A step of arranging along the surface is performed.

  Note that the airtight waterproof sheet 72 is not limited to a tape-shaped sheet, and can be configured as a single sheet having approximately the same size as the existing frame 2. In this case, after the four peripheral edges of the airtight waterproof sheet 72 are attached to the outdoor surface of the existing frame 2, a cut is made in the opening portion of the existing frame 2 of the airtight waterproof sheet 72, and the indoor side along the existing frame 2 Fold it in. For example, the cutting is performed at an angle of 45 degrees from the four corners of the opening of the existing frame 2, that is, from the corner portion where the existing upper frame 21 and the existing lower frame 22 and the existing vertical frames 23 and 24 are joined. What is necessary is just to set so that two triangles and two trapezoid folding parts may be formed by cutting with the line which connects the points where the cut line from a corner part intersects. Further, a sheet material for a corner is stuck between the folded portions of the airtight waterproof sheet 72 so as to be closed.

  Next, the process of arrange | positioning the new installation frame 4 in a building opening part is performed. At this time, since the new frame 4 has no nail fins, position adjustment in the prospective direction is possible. For this reason, what is necessary is just to adjust the attachment position of the prospective direction of the new frame 4 according to the prospective dimension (thickness dimension) of the new exterior material 30, the trunk | drum 32, and the new heat insulating material 31. FIG. For example, the outdoor end face of the new frame 4 is arranged at a position that is substantially aligned with the outdoor face of the new exterior member 30.

  Next, the indoor side end of the airtight waterproof sheet 72 is folded back to the mounting pieces 411, 421, 431, 441, which are the indoor side portions of the new frame 4, and the inner peripheral surfaces of the mounting pieces 411, 421, 431, 441 are A step of attaching to the substrate using a waterproof double-sided tape or the like is performed. In addition, what is necessary is just to cut off the excess part of the airtight waterproof sheet 72 with a cutter.

  Next, the new frame 4 is attached to the housing 10 with screws 15. The screw 15 makes a hole in the airtight waterproof sheet 72. However, since the airtight waterproof sheet 72 has swelling property, when water enters, the airtight waterproof sheet 72 swells by sucking water, and the hole formed by the screw 15 is formed. Therefore, it is possible to prevent water from entering the indoor side from the airtight waterproof sheet 72.

  Next, a draining waterproof sheet 75 is pasted between the surface of the airtight waterproof sheet 72 affixed to the outdoor surface of the existing upper frame 21 and the inclined part 63 of the drainer 60 attached in advance to the new upper frame 41. wear. Further, the waterproof sheet 71 attached to the surface of the existing outer wall 1 is attached to the surface of the draining waterproof sheet 75. Further, the waterproof sheet 71 is attached to the airtight waterproof sheet 72 in the existing vertical frames 23 and 24 where the draining waterproof sheet 75 is not provided. Thereby, the airtight waterproof sheet 72 is continuously provided on the waterproof layer composed of the waterproof sheet 71.

In addition, a new heat insulating material 31 is disposed along the outdoor surface of the existing outer wall 1, and a new exterior material 30 is attached via the trunk edge 32. Further, a backup material 66 and a wet sealing material 67 are filled between the new frame 4 and the new exterior material 30.
Thus, the renovation work for the outer walls and windows is completed.

In addition, when the new exterior material 30 and the new frame 4 are installed and refurbished, the new exterior material 30 is newly installed in order to change the type of window or to replace the new window because the window is damaged or deteriorated. The new frame 4 and the new shoji 5 can be removed and replaced while leaving the heat insulating material 31 and the like.
In this case, the new cover member 38 and the new frame 36 are removed, and the indoor side of the new frame 4 and the airtight waterproof sheet 72 is exposed. Then, the indoor exposed portion of the airtight waterproof sheet 72 is cut with a cutter or the like, the inner peripheral surface of the airtight waterproof sheet 72, the portions disposed along the adjustment members 416, 426, the existing frame 26, and the like, and the attachment piece 411. , 421, 431, 441 are separated from each other.
Further, the wet sealing material 67 and the backup material 66 are also removed as appropriate. Further, the water draining waterproof sheet 75 is cut and separated from the water draining material 60 between the new upper frame 41 and the new heat insulating material 31. And the screw 15 which has fixed the new installation frame 4 to the housing 10 is removed, and the new installation frame 4 is removed to the outdoor side from the building opening.
Thereafter, a new airtight waterproof sheet is connected to the airtight waterproof sheet 72 and the drainage waterproof sheet 75 remaining in the opening of the building, and a new new window is hung from the outdoor side.
Then, on the indoor side of the new frame 4, an airtight waterproof sheet connected to the airtight waterproof sheet 72 is folded and attached to the inner peripheral surface of the attachment pieces 411, 421, 431, 441, and the new frame 4 is attached to the housing 10 with the screws 15. Installation, new frame 36 and new cover material 38 are newly provided and finished. On the outdoor side of the new frame 4, an airtight waterproof sheet connected to the water draining waterproof sheet 75 is attached to the inclined portion 63 of the water draining material 60 of the new frame 4, and a backup material 66 is provided in a gap portion with the new exterior material 30. The wet sealant 67 is filled and finished.
With the above operation, the replacement operation of the new window can be performed.

[Effects of First Embodiment]
According to such 1st Embodiment, there exist the following effects.
(1) Since the new exterior material 30 is arranged on the outdoor side of the existing outer wall 1 and the new heat insulating material 31 is provided between the new exterior material 30 and the existing outer wall 1, the heat insulation performance of the outer wall portion can be improved. Further, since the new frame 4 arranged on the inner peripheral side of the opening of the existing frame 2 is made of resin, the heat insulation performance of the new frame 4 itself can be improved.
Furthermore, since the existing frame 2 is covered with the heat insulating layer 80 composed of the new heat insulating material 31 and the air layer 81 and the new frame 4 so that the existing frame 2 is not exposed to the outdoors, the existing frame 2 Heat outflow through the can be reduced.
Therefore, in addition to the reduction of the heat flow of the outer wall portion by the heat insulating layer 80 and the reduction of the heat flow of the wall opening portion by the new window, the heat flow of the connecting portion between the wall and the window can be reduced, and the heat insulation performance of the entire outer wall Can be improved. For this reason, the temperature drop by the side of the existing frame 2 or the housing 10 can be suppressed, and the occurrence of condensation can also be prevented.

(2) Since the new shoji 5 arranged in the new frame 4 and the face material of the fitting window are composed of the triple glasses 47 and 57, the heat insulating performance of the face material portion can be improved. Further, in the new shoji 5, each of the eaves 51, 52, 53, 54 is made of resin, so that the heat insulation performance of the eave itself can be improved, and the heat insulation performance of the entire new window arranged in the existing frame 2 can be improved.

(3) Since at least one glass 471, 571, 572 of the triple glasses 47, 57 is disposed at a position overlapping the heat insulating layer 80 in the prospective direction, on the extension line of the heat insulating line constituted by the heat insulating layer 80. In addition, a heat insulating line for the face material constituted by the triple glasses 47 and 57 can be arranged. For this reason, the heat insulation line formed in the new installation frame 4, the new shoji 5 etc. from the heat insulation layer 80 which has the new heat insulating material 31 and the air layer 81 can be arrange | positioned substantially parallel to an outer wall surface.
Therefore, compared with the case where the heat insulation line is set obliquely with respect to the outer wall surface, the heat flow through the existing frame 2 can be reduced, and the occurrence of condensation around the existing frame 2 can also be suppressed.

(4) Since the outdoor side end of the new frame 4 is located on the outdoor side of the outdoor surface of the new exterior material 30, the new frame 4 and the new exterior material 30 can be arranged to face each other. The back-up material 66 and the wet sealing material 67 can be filled and sealed. For this reason, the newly installed frame 4 can be used as a parting material for the newly installed exterior member 30, and a general storage structure can be obtained.
In addition, when the new exterior material 30 is not provided, it is necessary to provide a joint member that connects the new frame 4 and the existing frame 2 to close the gap between the new frame 4 and the existing frame 2. Then, a normal sealing process can be performed between the newly installed frame 4 and the newly installed exterior member 30, and a joint member that connects between the newly installed frame 4 and the existing frame 2 is unnecessary, so that the housing can be simplified.

(5) Because the expected dimension L1 from the outdoor surface of the new exterior material 30 to the indoor end of the existing frame 2 is smaller than the expected dimension L2 from the outdoor surface of the new exterior material 30 to the indoor end of the new frame 4 The entire inner peripheral surface of the existing frame 2 can be covered with the new frame 4, and the heat insulation performance and design can be improved.

(6) Since the outer peripheral surface of the new frame 4 is formed in a plane along the prospective direction, the position of the new frame 4 in the indoor / outdoor direction can be freely set according to the thickness dimension of the new exterior material 30 and the new heat insulating material 31. Can be set. Therefore, even when the thickness dimensions of the new exterior material 30 and the like are different, the same type of new frame 4 can be used, and the types of the new frame 4 can be reduced.
Further, since the new frame 4 is fixed by screwing screws 15 into the housing 10 from the mounting pieces 411, 421, 431, and 441 projecting from the indoor side end of the new frame 4 toward the indoor direction, the inner periphery of the opening The installation work of the new frame 4 can be performed from the side, and the renovation work can be easily performed.

(7) Since the draining material 60 is attached to the newly installed upper frame 41 and is not attached to the outer wall base material, the trunk edge, the casing or the like as in the prior art, the metallic draining material 60 and the casing 10 side are There is no direct contact, the heat flow through the draining material 60 can be reduced, and the heat insulation performance can also be improved in this respect. In particular, the indoor side of the draining material 60 is a heat insulating layer 80 composed of a sealed air layer 81, and the waterproof sheet 75 for draining water also has a heat insulating property, so that the thermal bridge from the draining material 60 to the existing upper frame 21 and the like. Therefore, the heat flow from the draining material 60 to the existing upper frame 21 can be reduced.

(8) When the draining material is attached to the outer wall side, it is necessary to prepare a plurality of types of draining materials according to the thickness dimension of the newly installed exterior material 30 or the like, but in this embodiment, the draining material 60 is Since it is attached to the new upper frame 41, it can be attached on the basis of the outdoor surface of the new upper frame 41. For this reason, even if the thickness dimension of the new exterior material 30 etc. changes, the kind of the draining material 60 can be made into one kind.
Furthermore, since the waterproof sheet 71 and the draining material 60 are connected by the waterproof sheet 75 for draining, even if the thickness dimension of the new exterior material 30 changes and the interval between the waterproof sheet 71 and the draining material 60 changes. It can be easily adjusted by the length dimension of the draining waterproof sheet 75 or the like.

(9) Since the airtight waterproof sheet 72 that closes the space between the existing frame 2 and the new frame 4 is attached to the indoor installation pieces 411, 421, 431, and 441 of the new frame 4, after the new frame 4 is mounted Even when the new frame 4 needs to be replaced, the air-tight waterproof sheet 72 and the new frame 4 can be separated and the new frame 4 can be easily removed by cutting the exposed portion of the hermetic waterproof sheet 72 on the indoor side. be able to. In addition, a new airtight waterproof sheet is connected to the airtight waterproof sheet 72 remaining in the opening of the building, and affixed to the indoor side of the newly installed new frame 4, thereby waterproofing the newly installed frame 4 after replacement. It can be done easily.

[Second Embodiment]
Next, 2nd Embodiment of this invention is described based on FIGS. Note that the second embodiment is different from the first embodiment only in the arrangement of the waterproof sheet in the waterproof structure, and other configurations are the same as those in the first embodiment.

In the first embodiment, a waterproof line is configured on the indoor side of the new heat insulating material 31 by the waterproof sheet 71 disposed on the indoor side of the new heat insulating material 31.
On the other hand, in 2nd Embodiment, the waterproof sheet 73 is arrange | positioned in the outdoor side of the new heat insulating material 31, and the waterproof line is comprised in the outdoor side of the new heat insulating material 31. FIG. The waterproof sheet 73 of 2nd Embodiment is comprised with the moisture-permeable waterproof sheet.
The waterproof sheet 73 is affixed to the inclined portion 63 of the draining material 60 in the portion of the newly installed upper frame 41. Therefore, the lower end portion side of the waterproof sheet 73 is also used as a draining waterproof sheet 75.
The waterproof sheet 73 is folded to the outdoor side along the new lower frame 42 and the new vertical frames 43 and 44 from the edge of the new heat insulating material 31 in the portions of the new lower frame 42 and the new vertical frames 43 and 44. It is affixed to the new lower frame 42 and the new vertical frames 43 and 44 with double-sided tape or the like.
Thus, the water that has entered the back surface side of the new exterior material 30 is guided to the inclined portion 63 of the draining material 60 along the waterproof sheet 73 and is discharged to the outdoor side through the drainage component 68.

Moreover, as shown in FIGS. 5-7, between the existing frame 2, and the fixing | fixed part 61 of the draining material 60, the newly installed lower frame 42, and the newly installed vertical frames 43 and 44, the waterproof sheet comprised with the airtight waterproof sheet 74 is pasted. That is, in the newly installed upper frame 41, the waterproof sheet 74 is attached to the outdoor surface of the existing upper frame 21 with a double-sided tape or the like, and the outdoor side end of the waterproof sheet 74 is attached to the fixing part 61 of the draining material 60 with a double-sided tape or the like. It is pasted.
In the newly installed lower frame 42, the waterproof sheet 74 is affixed to the outdoor surface of the existing lower frame 22, bent to the outdoor side on the lower surface of the newly installed lower frame 42, and adhered to the newly installed lower frame 42.
In the newly installed vertical frames 43 and 44, the waterproof sheet 74 is affixed to the outdoor surface of the existing vertical frames 23 and 24, and is bent outward on the outer peripheral surface of the newly installed vertical frames 43 and 44 to form the new vertical frames 43 and 44. It is pasted.
As a result, a sealed space (air layer 82) surrounded by the waterproof sheets 73 and 74, the new heat insulating material 31, and the draining material 60 is formed in the new upper frame 41 portion. In the second embodiment, the heat layer 80 is formed by the air layer 82 and the new heat insulating material 31. 5-7, the waterproof sheet 73 and the waterproof sheet 74 are shown with the thick continuous line.

[Effects of Second Embodiment]
In 2nd Embodiment, there can exist an effect similar to the said 1st Embodiment.
Further, since the waterproof sheet 73 is arranged on the outdoor side of the newly-installed heat insulating material 31 and the opening side edge of the waterproof sheet 73 is attached to the draining material 60, the newly installed lower frame 42, and the newly installed vertical frames 43, 44, Infiltration of rainwater into the heat insulating material 31 can be prevented, and rainwater can be drained through the ventilation layer provided with the trunk edge 32.

  Since the waterproof sheet 74 is provided between the new frame 4 and the draining material 60 and the existing frame 2 and the air layer 82 used as the heat insulating layer 80 is formed, the heat insulating performance is improved as in the first embodiment. it can.

  Since the waterproof line is formed by the waterproof sheet 73, the airtight waterproof sheet 72 in the first embodiment can be eliminated. For this reason, the sticking work of the waterproof sheets 73 and 74 is facilitated, and waterproofing and refurbishment work can be easily performed.

[Modification]
In addition, this invention is not limited to the thing of the structure demonstrated by the above embodiment, The modification in the range which can achieve the objective of this invention is contained in this invention.

[First Modification]
For example, as shown in FIG. 8, the heat insulating layer 80 may be formed by extending the new heat insulating material 31 to a position where it is in contact with the new upper frame 41. That is, the new heat insulating material 31 is formed with a recess 311 in which the fixing portion 61 of the draining material 60 can be arranged, and the lower surface of the new heat insulating material 31 is brought into contact with the upper surface of the new upper frame 41.
In the first modified example, an airtight waterproof sheet 72 is disposed between the existing frame 2 and the new frame 4 as in the first embodiment. Further, in the modified example of FIG. 8, as in the second embodiment, a waterproof sheet 73 is arranged on the outdoor side of the new heat insulating material 31 to set an airtight watertight line, and the new heat insulating material 31 is installed in the new upper frame 41. Is continuous. For this reason, it is not necessary to provide the waterproof sheet 74 for forming the air layer 82 described in the second embodiment.

[Second Modification]
The structure for draining the water that has entered the back side of the new exterior material 30 is not limited to that using the draining material 60, and is waterproof from the outdoor surface of the new heat insulating material 31 to the new frame 4 as shown in FIG. A sheet 73 is attached, and a bowl-shaped drainage member 90 is attached to the surface (outdoor surface) of the waterproof sheet 73 so that the drainage member 90 receives water that has entered between the new exterior material 30 and the new heat insulating material 31. You may comprise. A waterproof tape 96 is applied across the waterproof sheet 73 and the drainage member 90, and rainwater that has flowed down the waterproof sheet 73 is configured to flow reliably to the drainage member 90 via the waterproof tape 96. ing.
The water received by the drainage member 90 is, for example, formed as a drainage passage on the outer peripheral side of the newly installed vertical frames 43 and 44, and drained to the outside from both ends in the longitudinal direction of the drainage member 90 via the drainage passage. What is necessary is just to comprise.

[Other variations]
The new frame 4 is not limited to resin, but may be made of wood, as long as it is made of a heat insulating member having higher heat insulating performance than a metal material such as aluminum.
In addition, the new frame 4 is not limited to the one made entirely of a heat insulating member such as resin or wood, but is composed of a composite frame that combines a non-heat insulating member such as aluminum and a heat insulating member such as resin. Also good. For example, you may use the composite frame which replaced the attachment pieces 411,421,431,441 part of the said new installation frame 4 with metal materials, such as aluminum.
In short, as the new frame, at least a part that continues from the heat insulating layer 80 to a part that covers the inner peripheral surface of the existing frame 2 is constituted by the heat insulating member, and the existing frame 2 is composed of the heat insulating layer 80 and the heat insulating member of the new frame 4. Can be covered so that it is not exposed to the outdoor side. Therefore, in the new frame 4, the mounting piece portion fixed with the screw 15 on the indoor side than the existing frame 2 and the outer wall parting portion arranged on the outdoor side with respect to the heat insulating line can also be configured with a non-insulating member. .
Similarly, the new shoji of the new shoji 5 is not limited to resin, but may be made of wood, or may be composed of a composite coffin that combines a non-insulating member such as aluminum and a heat insulating member such as resin. In this case, a portion that overlaps with the heat insulating layer 80 in the prospective direction of the newly installed saddle is used as a heat insulating member, and the heat insulating layer 80, the heat insulating member of the new frame 4, the face material, and the heat insulating member of the newly installed saddle continuously form a heat insulating line. What is necessary is just to comprise.

  In the above-described embodiment, the outer peripheral surface of the new frame 4 is a flat surface, but a structure in which a nail fin protrudes may be used. In this case, if it is possible to position the nail fin against the existing frame 2, the new frame 4 can be attached with the nail fin remaining, but if the nail fin cannot be positioned, the nail fin is cut at the construction site. There is a need to. Therefore, as in the above-described embodiments, it is advantageous to make the construction work easier when the outer peripheral surface of the new frame 4 is flat.

  The length dimension L2 from the outdoor surface of the new exterior material 30 to the indoor side edge of the new frame 4 is set smaller than the length dimension L1 from the outdoor surface of the new exterior material 30 to the indoor side edge of the existing frame 2 May be. In this case, since the indoor end of the existing frame 2 cannot be covered with the new frame 4, it may be covered with the new frame 36 or the like.

The face material of the new window is not limited to the triple glasses 47 and 57, and may be a double-layer glass (double glass) as long as it has a higher heat insulation performance than a general single plate glass.
Further, the face material of the new window is not limited to the one in which the position in the prospective direction of at least one piece of glass is disposed between the virtual surface S1 and the virtual surface S2. However, the heat insulating line formed by the face material in the new window and the heat insulating line of the heat insulating layer 80 formed of the new heat insulating material 31 and the like on the outer wall have substantially the same position in the prospective direction, and with respect to the outer wall surface. It is preferable that the heat insulation lines be substantially parallel in terms of improving heat insulation performance.

  The new window is not limited to the above-described continuous window of the vertical sliding window and the FIX window, but a single window such as a sliding window, a one-side-down window, a FIX window, a vertical sliding window, a sliding window, or a combination of these. A window, a corrugated window, etc. may be sufficient. That is, since the new window 4 is also renovated, various types of windows can be applied.

  DESCRIPTION OF SYMBOLS 1 ... Existing outer wall, 2 ... Existing frame, 3 ... New outer wall, 4 ... New frame, 5 ... New shoji, 10 ... Housing, 15 ... Screw, 21 ... Existing upper frame, 22 ... Existing lower frame, 23, 24 ... Existing Vertical frame, 30 ... New exterior material, 31 ... New heat insulating material, 32 ... Body edge, 41 ... New upper frame, 42 ... New lower frame, 43, 44 ... New vertical frame, 47, 57 ... Triple glass which is a face material , 51 ... Upper collar, 52 ... Lower collar, 53, 54 ... Vertical fence, 60 ... Drainage material, 71 ... Waterproof sheet, 72 ... Airtight waterproof sheet, 73 ... Waterproof sheet, 74 ... Waterproof sheet, 75 ... Drainage sheet for drainage , 80 ... heat insulation layer, 81, 82 ... air layer, 471, 571, 572 ... glass.

Claims (4)

New exterior materials are placed on the outside of the building's existing exterior walls,
A new frame is arranged on the inner peripheral side of the existing frame arranged in the opening of the existing outer wall,
The new frame is at least partially composed of a heat insulating member,
A heat insulating layer is provided between the existing outer wall and the new exterior material,
The existing frame is covered with the heat insulating member and the heat insulating layer of the new frame so as not to be exposed outdoors. The outer wall renovation structure according to claim 1,
On the inner peripheral side of the opening of the existing frame, the new frame and a new shoji that combines the new frame and the face material, or a face material for a fitting window are disposed,
The face material is configured to include a plurality of glasses, and at least one glass of the plurality of glasses is disposed at a position overlapping the heat insulating layer in a prospective direction. In the outer wall renovation structure according to claim 1 or 2,
The outdoor side end of the new frame is located on the outdoor side at least from the indoor surface of the new exterior material,
Renovation of the outer wall characterized in that the expected dimension from the outdoor surface of the new exterior material to the indoor edge of the existing frame is smaller than the expected dimension from the outdoor surface of the new exterior material to the indoor edge of the new frame. Construction. In the outer wall renovation structure according to any one of claims 1 to 3,
The outer peripheral surface of the new frame is composed of a plane along the prospective direction,
At the indoor side end of the new frame, a mounting piece projects toward the indoor direction,
The renovation structure for an outer wall, wherein the new frame is attached so that the position in the indoor / outdoor direction can be adjusted by screws screwed into the building frame from the mounting piece.

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