JP6877918B2 - Exterior wall renovation structure - Google Patents

Description

The present invention relates to an outer wall refurbished structure having 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 heating and cooling, and in particular, remodeling of windows with low heat insulation performance such as single-plate glass windows is spreading.
As a remodeling to improve the heat insulating performance of a window, a refurbished window (for example, Patent Document 1) in which a new window is installed inside an existing window to form a double-glazed window is common. This double-glazed window can be easily refurbished because the existing window frame and the existing shoji can be left as they are and a new inner window can be attached. This has the advantage that the heat insulation performance can be improved. On the other hand, when opening a window, it is necessary to open and close the new inner window and the existing outer window twice. Therefore, there is a problem that it is not suitable for remodeling windows that are frequently opened and closed.

On the other hand, in order to renovate an aged window, a refurbished window (for example, Patent Document 2) of a cover method 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 is also known. There is. Such a refurbished window usually uses a new window frame made of aluminum, and there is a problem in improving the heat insulating performance.
For this reason, the applicant can open and close the new window frame placed on the inner peripheral side of the existing window frame by using resin, the new shoji stile made of resin, and double glazing or triple glass. We are proposing refurbished windows that are easy to operate and have improved heat insulation performance.

Japanese Unexamined Patent Publication No. 2011-231506 Japanese Unexamined Patent Publication No. 2015-124544

By the way, in each of the above-mentioned refurbished windows, only the window portion was refurbished, and the outer wall and the existing frame were left as they were. For this reason, there is a problem that the heat outflow through the existing outer wall and the existing frame is not improved, and it is difficult to further improve the heat insulating performance of the house. Further, since the heat flow rate around the existing frame is large, there is a problem that it is difficult to suppress the occurrence of dew condensation inside the wall around the existing frame.
For this reason, there has been a demand for an outer wall refurbished structure that can improve the heat insulating performance of the entire outer wall including windows and suppress the occurrence of dew condensation around the existing frame.

An object of the present invention is to provide an outer wall refurbished structure capable of improving the heat insulating performance of the entire outer wall and suppressing the occurrence of dew condensation around the existing frame.

In the outer wall remodeling structure of the present invention, a new exterior material is arranged on the outdoor side of the existing outer wall of the building, and a new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall. A new heat insulating material is provided between the outer wall and the new exterior material, and the new heat insulating material is expected to be in contact with the prospective surface of the new frame or through a sealed air layer. It is extended to a position facing the surface and arranged on the outdoor side of the finding surface of the existing frame, and the new frame is inside the existing frame in a prospective direction from at least a position where it abuts or faces the new heat insulating material. Up to the position of the indoor side end of the peripheral surface is composed of a heat insulating member, the new frame is provided with a new upper frame, the existing frame is provided with an existing upper frame, and the air layer is a waterproof sheet, a drainage material, and the like. It is characterized in that it is a closed space surrounded by the new upper frame or the new heat insulating material.

According to the present invention, since the new exterior material is arranged on the outdoor side of the existing outer wall and the new heat insulating material is provided between the new exterior material and the existing outer wall, the heat insulating performance of the outer wall portion can be improved. Further, since the new frame arranged on the inner peripheral side of the opening of the existing frame is a frame whose at least a part is composed of a heat insulating member, the heat insulating performance of the new frame itself can be improved. Further, the new heat insulating material is extended to a position where it abuts on the prospective surface of the new frame or a position facing the prospective surface of the new frame through a sealed air layer, and is placed on the outdoor side of the finding surface of the existing frame. The new frame is already installed because it is composed of heat insulating members from at least the position where it abuts or faces the new heat insulating material to the position of the indoor side end of the inner peripheral surface of the existing frame in the prospective direction. Heat outflow through the frame can be reduced. Therefore, it is possible to provide an outer wall refurbished structure capable of improving the heat insulating performance of the entire outer wall and suppressing the occurrence of dew condensation around the existing frame.
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. Further, the new frame, which is at least partially composed of a heat insulating member, may be a resin or 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 it may be.

According to the present invention, since the air layer is composed of a waterproof sheet, a drainage material, and a closed space surrounded by a new upper frame or a new heat insulating material, it is possible to make the volume small so that air convection does not occur. It can improve the heat insulation performance.

In the outer wall remodeling structure of the present invention , a new exterior material is arranged on the outdoor side of the existing outer wall of the building, and a new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall. A new heat insulating material is provided between the outer wall and the new exterior material, and the new heat insulating material is expected to be in contact with the prospective surface of the new frame or through a sealed air layer. It is extended to a position facing the surface and arranged on the outdoor side of the finding surface of the existing frame, and the new frame is inside the existing frame in a prospective direction from at least a position where it abuts or faces the new heat insulating material. Up to the position of the indoor side end of the peripheral surface, the existing frame is composed of an existing upper frame, an existing lower frame, and an existing vertical frame, and the new frame is made of synthetic resin. It is composed of a new upper frame, a new lower frame, and a new vertical frame. On the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction, the new lower frame and the outer peripheral surface of the new vertical frame are hit. The new heat insulating material in contact is arranged, and the new heat insulating material and the sealed air layer are provided on the outdoor side in the prospective direction of the existing upper frame, and the air layer is the new upper frame and the new installation. It is partitioned by a drainage material fixed to the upper surface of the upper frame, a waterproof sheet provided between the drainage material and the existing upper frame, and a waterproof sheet provided between the existing upper frame and the new upper frame. It is preferable to have.

According to the present invention, a new heat insulating material that abuts on the outer peripheral surface of the new lower frame and the new vertical frame is arranged on the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction to form a heat insulating layer, and the existing upper frame is formed. Since the heat insulating layer is formed by providing a new heat insulating material and a sealed air layer on the outdoor side in the prospective direction, a heat insulating line can be formed on the outdoor side of the existing frame, and the heat flow rate transmitted from the new exterior material to the existing frame. Can be reduced and the heat insulation performance can be improved.

In the outer wall remodeling structure of the present invention , a new exterior material is arranged on the outdoor side of the existing outer wall of the building, and a new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall. A new heat insulating material is provided between the outer wall and the new exterior material, and the new heat insulating material is expected to be in contact with the prospective surface of the new frame or through a sealed air layer. It is extended to a position facing the surface and arranged on the outdoor side of the finding surface of the existing frame, and the new frame is inside the existing frame in a prospective direction from at least a position where it abuts or faces the new heat insulating material. Up to the position of the indoor side end of the peripheral surface, the existing frame is composed of an existing upper frame, an existing lower frame, and an existing vertical frame, and the new frame is made of synthetic resin. It is composed of a new upper frame, a new lower frame, and a new vertical frame. On the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction, the new lower frame and the outer peripheral surface of the new vertical frame are hit. The new heat insulating material in contact is arranged, and the new heat insulating material and the sealed air layer are provided on the outdoor side in the prospective direction of the existing upper frame, and the air layer is the new upper frame and the new installation. It is partitioned by a drainage material fixed to the upper surface of the upper frame, a waterproof sheet provided between the drainage material and the new heat insulating material, and a waterproof sheet provided between the existing upper frame and the drainage material. Is preferable.

According to the present invention, a new heat insulating material that abuts on the outer peripheral surface of the new lower frame and the new vertical frame is arranged on the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction to form a heat insulating layer, and the existing upper frame is formed. Since the heat insulating layer is formed by providing a new heat insulating material and a sealed air layer on the outdoor side in the prospective direction, a heat insulating line can be formed on the outdoor side of the existing frame, and the heat flow rate transmitted from the new exterior material to the existing frame. Can be reduced and the heat insulation performance can be improved.

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

The vertical sectional view which shows the outer wall refurbished structure of 1st Embodiment of this invention. The cross-sectional view which shows the outer wall refurbishment structure of 1st Embodiment. The perspective view which shows the main part of the outer wall refurbishment structure of 1st Embodiment. The cross-sectional view which shows the main part of the outer wall refurbished structure of 1st Embodiment. The vertical sectional view which shows the outer wall refurbished structure of the 2nd Embodiment of this invention. The cross-sectional view which shows the outer wall refurbishment structure of 2nd Embodiment. The perspective view which shows the main part of the outer wall remodeling structure of 2nd Embodiment. The vertical sectional view which shows the main part of the 1st modification of this invention. The vertical sectional view which shows the main part of the 2nd modification of this invention.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the present embodiment is an outer wall refurbished 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 refurbished.
In the following description, when the existing frame 2 and the new frame 4 are viewed from the indoor side, the vertical (vertical) direction is defined as the vertical direction, the horizontal direction is defined as the horizontal direction, and the indoor / outdoor direction is defined as the expected 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 an inner peripheral surface, and the surface facing the outer peripheral side will be described as an outer peripheral surface.
Further, in the cross-sectional views of the frame material, the frame material, the glass, etc. of the existing frame 2, the new frame 4, and the new shoji 5, hatching is omitted in order to make the drawings easier to see.

The building includes a skeleton 10 that supports the existing outer wall 1 and the existing frame 2. The skeleton 10 includes, for example, columns and studs arranged at appropriate intervals, a window sill and a lintel that are hung between the columns and studs to partition window openings.

[Existing outer wall and existing frame]
The existing outer wall 1 and the existing frame 2 are fixed to the skeleton 10.
The existing frame 2 is composed 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 frame 21, 22, 23, 24 differs depending on the type of the 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 21A, 22A, 23A, 24A that abut on the outdoor surface of the skeleton, and nails are driven into the skeleton from the nail fins 21A, 22A, 23A, 24A. Therefore, the existing frame 2 is attached to the skeleton 10.
An existing picture frame 26 is attached to the indoor side of the existing frame 2 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 skeleton 10.
An existing outer wall 1 is arranged 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 closed with a sealing material 28 to be waterproofed.

[New outer wall]
On the outdoor side of the existing outer wall 1, a new outer wall 3 is provided by renovation. The new outer wall 3 includes a new heat insulating material 31 arranged on the outdoor side of the existing outer wall 1, a furring strip (vertical furring strip) 32 arranged on the outdoor side of the new heat insulating material 31, and a furring strip 32. It is provided with a new exterior material 30 arranged on the outdoor side.
The new heat insulating material 31 is a general heat insulating material used in the external heat insulating method, such as a heat insulating material obtained by foaming polystyrene resin, phenol resin, or the like.
The new exterior material 30 is an exterior material made of various materials such as ceramics, concrete, ALC (lightweight cellular concrete), and metal.

[New window]
A new window is attached to the inner peripheral surface of the opening of the existing frame 2. The new window of the present 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 screen 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 (middle bone) 45.
The FIX window is configured by incorporating a face material made of triple glass 47 into a window frame composed of a new upper frame 41, a new lower frame 42, a new vertical frame 44, and a vertical bone 45. Will be done. The triple glass 47 is held by each of the frames 41, 42, 44, the vertical bone 45, and the ridge 46 attached to these frames.

The vertical sliding window is configured by attaching the new shoji 5 so that it can be opened and closed in the window frame composed of the new upper frame 41, the new lower frame 42, the new vertical frame 43, and the vertical bone 45. Will be done.
The new shoji 5 is a face material composed of a new stile composed of a resin upper stile 51, a lower stile 52, and left and right vertical stiles 53 and 54, and a triple glass 57 incorporated in the new stile. It is composed of and. The triple glass 57 is held by the respective stiles 51, 52, 53, 54 and the ridges 56 attached to them.
As for the new window, the new frame 4 and the frames 51, 52, 53, 54 of the new shoji 5 are made of resin (made of synthetic resin), and the face material is made of triple glass 47, 57, so that the heat insulation performance is improved. It is said to be a high window. Each of the frames 51, 52, 53, 54 of the present embodiment is made of an extruded resin material having the same cross section, and is provided with a plurality of hollow portions to improve the heat insulating performance.

[New frame]
The new upper frame 41, the new lower frame 42, and the new vertical frames 43 and 44 are made of extruded resin material. Therefore, in the present embodiment, the entire new frame 4 is composed of a heat insulating member (resin member). In the present embodiment, the frames 41, 42, 43, and 44 are extruded profiles having the same cross-sectional shape, but the shapes of the frames are set according to the type of window and are not necessarily limited to those having the same cross-sectional shape. ..
Further, each of the frames 41, 42, 43, 44 is provided with first to fourth hollow portions arranged from the outdoor side to the indoor side along the prospective direction, and the heat insulating property and the rigidity of the frame itself are improved.
The outdoor end surface of the first hollow portion is arranged on substantially the same plane as the outdoor surface of the new exterior material 30. The second hollow portion has a larger found size than the first hollow portion, and protrudes toward the inner circumference side of the first hollow portion. An engaging groove on which the ridge 46 can be mounted is formed on the inner peripheral surface of the second hollow portion.
The third hollow portion has the same founding dimensions as the second hollow portion, and the estimated dimensions are the same as those of 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 a found size similar to that of the third hollow portion. On the inner peripheral side of the fourth hollow portion, holding pieces of the triple glass 47 of the FIX window and protruding portions 41A, 42A, 43A, 44A serving as door stop portions of the newly installed shoji 5 are provided.
The vertical bone 45 includes three hollow portions (second to fourth hollow portions) corresponding to the second to fourth hollow portions of the frames 41, 42, 43, and 44, respectively. An engaging groove of the ridge 46 is formed in the second hollow portion of the vertical bone 45, a metal plate (channel material) to which a part such as a lock holder is attached is arranged in the third hollow portion, and the fourth hollow portion is Two projecting portions 45A projecting in the left-right direction are formed.

The outer peripheral surfaces of the new upper frame 41, the new lower frame 42, and the new vertical frames 43 and 44 have a flat flat shape, and fin portions corresponding to the nail fins 21A, 22A, 23A, and 24A of the existing frame 2 are provided. Absent.
Mounting pieces 411, 421, 431, 441 projecting to the indoor side are formed at the indoor side ends of the frames 41, 42, 43, 44, and the mounting pieces 411, 421, 431, 441 are formed by screws 15. It is attached to the skeleton 10. Therefore, the screw 15 is screwed in the direction orthogonal to the prospective direction of the new frame 4 (the finding direction of each of the frames 41, 42, 43, 44).
As described above, since the new frame 4 has no nail fins and is attached to the skeleton 10 by screwing the screw 15 in the finding direction, the new frame 4 can be attached to the skeleton 10 so that the position in the indoor / outdoor direction (probable 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.

Further, 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 from the outdoor surface of the new exterior material 30 to the indoor side of the new frame 4. It is set to be smaller than the length dimension L2 of the prospective method to the edge. Therefore, the new frame 4 covers the inner peripheral surface of the existing frame 2.
In the present embodiment, since the outdoor surface of the new exterior material 30 is located in the same prospective direction as the outdoor surface of the new frame 4, the new frame 4 (new upper frame 41, new lower frame 42, new vertical frame) The length dimension in the prospective direction of 43, 44) is also dimension L2.
The dimension L2 in the prospective direction of the new frame 4 is set so that each mounting piece 411,421,431,441 is located on the indoor side of the existing frame 2. That is, the protruding dimension of the mounting pieces 411,421,431,441 is set to be equal to or larger than the dimension (L2-L1). Therefore, the screws 15 screwed from the mounting pieces 411, 421, 431, 441 are screwed into the skeleton 10 via the existing frame 26 or 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 hung between the new frame 36 and the interior material 27. The new cover material 38 covers the existing frame 26 so that it is not exposed to the indoor side.

[Drainage material]
As shown in FIGS. 1 and 3, a drainage member 60 made of an extruded aluminum profile or the like is attached to the outer peripheral surface (upper surface) of the new upper frame 41. Therefore, a space for arranging the drainage material 60 is secured between the lower end surface of the new exterior material 30, the new heat insulating material 31, and the furring strip 32 and the new upper frame 41.
As shown in FIG. 3, the drainage material 60 has a fixing portion 61 fixed to the new upper frame 41 with screws, rivets, or the like, a rising portion 62 extending upward from the fixing portion 61, and an upper end of the rising portion 62. An inclined portion 63 extending from the above to the outdoor side of the newly installed upper frame 41 and inclined downward toward the outside to set a downward slope, and a drainage portion 64 extending downward from the tip of the inclined portion 63. And have.

A dry sealing material 65 is attached between the new upper frame 41 and the drainage 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 component 68 having a drainage hole is arranged in a part of the backup material 66 and the wet sealing material 67.
Further, a waterproof sheet 75 for drainage, which will be described later, is hung between the inclined portion 63 of the drainage material 60 and the existing upper frame 21 and the new heat insulating material 31, and the back surface side (indoor surface side) of the new exterior material 30 is hung. ) Flows from the drainage waterproof sheet 75 onto the inclined portion 63, and is drained through the drainage component 68.
Instead of providing the drainage component 68, the wet sealing material 67 and the backup material 66 may be provided with a notch portion to be a drainage hole so that drainage can be performed.

[Fixed structure of new frame]
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. Therefore, 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 adjusting member (household tree) 415 having a thickness dimension corresponding to the gap dimension is arranged between the new 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 adjusting member 415 and the existing frame 26, and the adjusting member 416 is provided in this gap. It is arranged.

As shown in FIG. 1, the new lower frame 42 is arranged so as to abut on the upper surface 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 abuts on 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 dimension equal to the total length in the longitudinal direction of the existing lower frame 22 (horizontal direction of the existing frame 2), but in the present embodiment, it is formed in a short piece shape. It is formed and attached to a plurality of locations of the existing lower frame 22. Since the support bracket 221 is provided, the load of the new lower frame 42 can be supported, and the hanging of the new lower frame 42 can be prevented.
Further, on the existing frame 26, an adjusting member 426 for eliminating a step with the upper surface of the existing lower frame 22 is arranged.
The outdoor end of the new lower frame 42 extends to the position of the new exterior material 30, and the backup material 66 and the wet sealing material 67 are filled between the new lower frame 42 and the new 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 new vertical frames 43 and 44 and the existing frame 26. As a result, 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 adjusting members 435 and 445. 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 adjusting members 435 and 445 and the new heat insulating material 31. On the other hand, the new exterior material 30 and the furring strip 32 are arranged apart 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 new vertical frames 43 and 44 and the new exterior material 30.

[Waterproof structure]
Next, the waterproof structure in this embodiment will be described with reference to FIGS. 1 to 3. In the present embodiment, the waterproof sheet 71 for the outer wall, the airtight waterproof sheet 72 that seals between the existing frame 2 and the new frame 4 so that air does not flow, and the drainage waterproof sheet 75 that guides water to the drainage material 60. Three types of waterproof sheets are provided.
The waterproof sheet includes a moisture-permeable waterproof sheet that does not allow water to pass through but allows moisture such as water vapor to pass through, and an airtight waterproof sheet that does not allow water, water vapor, and air to pass through (also referred to as a moisture-proof airtight sheet or an airtight sheet). The type is selected according to the function required for the waterproof sheet. In the present embodiment, a furring strip 32 is provided between the new exterior material 30 and the new heat insulating material 31 to form a ventilation layer, and the moisture (water vapor) of the existing outer wall 1 is ventilated to the new heat insulating material 31 and the new heat insulating material 31. The waterproof sheet 71 uses a moisture-permeable waterproof sheet so that it can be released to the outside through the layer. Further, the airtight waterproof sheet 72 and the drainage waterproof sheet 75 use the airtight waterproof sheet.
In FIGS. 1, 2 and 4, the waterproof sheet 71 is shown by a broken line, and the airtight waterproof sheet 72 and the drainage waterproof sheet 75 are shown by a thick solid line so that the waterproof sheets can be easily distinguished from each other.
Further, each of the waterproof sheets 71, 72, and 75 has flexibility like a general waterproof sheet, and is configured so that it can be bent along the existing frame 2 and the like.

[Waterproof sheet for outer wall]
In the outer wall portion, an existing waterproof sheet or the like is provided on the back surface side of the existing outer wall 1. However, this existing tarpaulin may have deteriorated. Therefore, at the time of renovation, a new waterproof sheet 71 is attached to form a waterproof structure on the outer wall of the building. That is, the waterproof sheet 71 is adhered between the existing outer wall 1 and the new heat insulating material 31. The waterproof sheet 71 constitutes a waterproof layer provided on the back surface side of the new exterior material 30.
As shown in FIG. 1, the end portion of the waterproof sheet 71 arranged between the existing upper frame 21 and the new heat insulating material 31 is located on the outdoor side of the airtight waterproof sheet 72 and the drainage waterproof sheet 75, as will be described later. They are placed on top of each other. Further, the end portion of the waterproof sheet 71 arranged between the existing lower frame 22 and the new heat insulating material 31 is arranged so as to overlap the indoor side of the airtight waterproof sheet 72. That is, in the continuous portion of the waterproof sheet continuous in the vertical direction, the upper waterproof sheet overlaps the outdoor side of the lower waterproof sheet, and when water flows down, it flows on the outdoor surface side of the waterproof sheet.
Further, as shown in FIG. 2, the end portion of the waterproof sheet 71 arranged between the existing vertical frames 23 and 24 and the new heat insulating material 31 is arranged so as to overlap the outdoor side of the airtight waterproof sheet 72. The overlapping portions of the waterproof sheets 71, 72, and 75 are adhered to each other with double-sided tape or the like.

[Waterproof sheet for sealing]
An airtight waterproof sheet 72 is provided between the existing frame 2 and the new frame 4. The airtight tarpaulin 72 has a function of a polymer absorber sucking water to infiltrate through a through hole or the like to swell and close the through hole. For example, the airtight tarpaulin 72 has a water blocking function manufactured by 3M Japan Ltd. Outer wall tarpaulin 2407 etc. can be used.
The airtight waterproof sheet 72 that connects the existing frame 2 and the new frame 4 is arranged along the inner peripheral surfaces of the four circumferences of the existing frame 2 and is sealed between the existing frame 2 and the new frame 4 so that air does not flow indoors and outdoors. doing.
That is, as shown in FIGS. 1 and 3, the airtight waterproof sheet 72 is attached between the existing upper frame 21 and the new upper frame 41 to the outdoor surface of the existing upper frame 21 with double-sided tape or the like, and the existing upper frame 21 and the new upper frame 41 It is folded indoors along the inner peripheral surface (lower surface) of the adjusting member 416. The indoor side end of the airtight waterproof sheet 72 is bent along the indoor surface of the adjusting member 415 and the mounting piece 411, and further folded back to the outdoor side along the inner peripheral surface of the mounting piece 411, and double-sided tape is attached to the mounting piece 411. It is pasted with.

As shown in FIG. 1, the airtight waterproof sheet 72 is attached between the existing lower frame 22 and the new lower frame 42 to the outdoor surface of the waterproof sheet 71 attached to the outdoor surface of the existing lower frame 22 with double-sided tape or the like. , The support bracket 221 is arranged along the upper surface of the existing lower frame 22 and the adjusting member 426. The indoor end of the airtight waterproof sheet 72 is bent along the outdoor surface of the mounting piece 421, then folded back to the outdoor side along the inner peripheral surface of the mounting piece 421, and attached to the mounting piece 421 with double-sided tape or the like. Has been done.

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 to the outdoor surface of the existing vertical frames 23 and 24 with double-sided tape or the like. It is arranged along the inner surfaces of the vertical frames 23 and 24 and the existing frame 26. The indoor side end of the airtight waterproof sheet 72 is bent along the outdoor surface of the adjusting member 435 and 445, further folded back to the inner peripheral surface of the mounting pieces 431 and 441, and attached to the mounting pieces 431 and 441 with double-sided tape or the like. It is attached.
The indoor side edge of the airtight waterproof sheet 72 is hidden by a new frame 36 arranged along the inner peripheral surface of the mounting pieces 411,421,431,441 of the new frame 4 so as not to be exposed to the indoor side. ..

[Waterproof sheet for draining water]
As shown in FIGS. 1 and 3, the drainage waterproof sheet 75 is provided from the existing upper frame 21 to the drainage member 60. The drainage waterproof sheet 75 is a sheet having the same airtightness as the airtight waterproof sheet 72. The indoor end of the drainage 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 double-sided tape or the like. The end of the waterproof sheet 71 arranged between the new heat insulating material 31 and the existing outer wall 1 is the surface (outdoor) of the waterproof sheet 75 for drainage between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31. It is attached to the side) with double-sided tape. That is, an airtight waterproof sheet 72, a drainage waterproof sheet 75, and a waterproof sheet 71 are laminated from the indoor side between the outdoor surface of the existing upper frame 21 and the new heat insulating material 31.

The outdoor side end of the drainage waterproof sheet 75 is attached to the surface of the inclined portion 63 of the drainage material 60 with double-sided tape or the like at a position lower than the indoor side end of the drainage waterproof sheet 75. Therefore, the drainage waterproof sheet 75 is continuously provided on the waterproof sheet 71 at the indoor side end portion, and the surface of the drainage waterproof sheet 75 has a downward slope from the indoor type end portion to the outdoor side end portion. It is provided so as to be.
Therefore, the rainwater that has entered between the new heat insulating material 31 and the existing outer wall 1 flows along the waterproof sheet 71, flows from the waterproof sheet 75 for draining onto the inclined portion 63 of the draining material 60, and moves from the draining component 68 to the outdoor side. It is drained.

[Insulation structure]
Next, the heat insulating structure in this embodiment will be described.
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 space between the new upper frame 41 and the new heat insulating material 31 is composed of an air layer 81 partitioned by an airtight waterproof sheet 72 and a drainage waterproof sheet 75. There is.
The air layer 81 is a space surrounded by an airtight waterproof sheet 72, a drainage waterproof sheet 75, a drainage material 60, and a new upper frame 41, and has a small volume in which air convection does not occur. Therefore, the air layer 81 also functions as the heat insulating layer 80.
Further, the new heat insulating material 31 is in contact with the new lower frame 42 and the new vertical frames 43 and 44. Therefore, on the outer wall portion, the heat insulating layer 80 continuous with the new frame 4 is composed of the new heat insulating material 31 and the air layer 81.
Since the heat insulating layer 80 (new heat insulating material 31 and air layer 81) covers the outdoor surface of the existing frame 2 and the heat insulating line is formed on the outdoor side of the existing frame 2, the new exterior material 30 to the existing frame 2 The heat flow rate can be reduced, and even when the outside air temperature is low, it is possible to prevent the temperature of the existing frame 2 made of the extruded aluminum profile from dropping and causing dew condensation.

In the new window, the heat insulating performance is ensured by using the new resin frame 4, the resin frames 51, 52, 53, 54, and the triple glass 47, 57. In particular, in the newly installed window, for the face material that has the largest area in contact with the outdoor air, the heat insulation performance is improved by adopting triple glass 47, 57, and the heat inside and outside is improved along with the triple glass 47, 57. An insulation line is constructed to reduce the flow rate.
Further, the new frame 4 and each of the frames 51, 52, 53, 54 are also made of resin and further provided with a plurality of hollow portions arranged in the finding direction to improve the heat insulating performance.

Here, in the opening portion where the new window is arranged, as shown in FIG. 4, at least one glass of the triple glass 47, 57 is arranged in the heat insulating line connecting the new heat insulating materials 31 to each other.
In the triple glass 47 of the FIX window, the glass 471 arranged on the outermost side is arranged at a position overlapping with the heat insulating layer 80 in the prospective direction. That is, the glass 471 arranged on the most outdoor side of the triple glass 47 is arranged 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 installed shoji 5 of the vertical sliding window, the glass 571 arranged on the most outdoor side and the glass 572 arranged in the middle are arranged at positions overlapping with the heat insulating layer 80 in the prospective direction. That is, the glasses 571 and 572 are arranged between the virtual surface S1 and the virtual surface S2.
Therefore, at least one glass of the triple glass 47, 57, which is a face material provided in the new window, is arranged at a position where it hangs (overlaps) on the heat insulating line, that is, a position where it overlaps with the heat insulating layer 80 in the prospective direction. There is.
Therefore, the heat insulating layer 80, the new frame 4, the new shoji 5 (frames 51 to 54 and the triple glass 57) and the triple glass 47 arranged in the new frame 4 form a heat insulating line along the outer wall surface. Has been done.

The new frame 4 is arranged so as to cover the inner peripheral surface of the existing frame 2. Therefore, 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, 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 continuously provided on the heat insulating layer 80 and do not come into contact with the outside air. The heat flow rate transmitted to the existing frame 2 can also be reduced, and even when the outside air temperature is low, it is possible to prevent the temperature of the existing frame 2 made of extruded aluminum from dropping and causing dew condensation.

[Renovation method]
Next, the construction method of the outer wall remodeling structure of the present embodiment will be described.
First, the shoji (not shown) of the existing fitting is removed from the existing frame 2. Further, the adjusting members 416 and 426 are attached in advance to eliminate the step between the existing upper frame 21, the existing lower frame 22 and the existing frame 26.
Then, the airtight waterproof sheet 72 is attached to the outdoor surface of the existing frame 2, and the outdoor side end portion of the airtight waterproof sheet (airtight sheet) 72 is attached around the opening of the building. Since the waterproof sheet 71 is attached to the existing lower frame 22 portion first, the outdoor side end portion of the airtight waterproof sheet 72 is attached to the surface of the waterproof sheet 71.
As the airtight waterproof sheet 72, a band-shaped (tape-shaped) one can be used, and one side (outdoor side end) of the two sides (outdoor side end) of the tape-shaped airtight waterproof sheet 72 in the longitudinal direction can be used as each frame 21, Attach with adhesive tape or the like along the outdoor surfaces of 22, 23, and 24. For example, the airtight tarpaulin 72 is started to be attached from the central portion of the existing upper frame 21 in the left-right direction, and the airtight tarpaulin 72 is sequentially attached 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 tarpaulin 72 is attached to a position where it overlaps with the attachment 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.
When the sticking direction of the airtight waterproof sheet 72 is changed by 90 degrees at the corner of the existing frame 2, the direction may be changed by making a notch on the outer peripheral side of the airtight waterproof sheet 72. The cut portion of the airtight waterproof sheet 72 is closed by stacking another waterproof tape.

Next, the other side of the airtight tarpaulin 72 is folded indoors along the inner peripheral surfaces of the frames 21, 22, 23, 24, and the airtight tarpaulin (airtight sheet) 72 is placed on the inner circumference of the building opening. Perform the process of arranging along the surface.

The airtight waterproof sheet 72 is not limited to a tape-shaped sheet, and may be composed of a single sheet having substantially 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 notch is made in the opening portion of the existing frame 2 of the airtight waterproof sheet 72, and the inside is moved along the existing frame 2. Fold it in. The cuts are made, for example, from the four corners of the opening of the existing frame 2, that is, the corners where the existing upper frame 21 and the existing lower frame 22 and the existing vertical frames 23 and 24 are joined at an angle of 45 degrees. It may be set so that two triangles and two trapezoidal folds are formed by cutting with a line connecting points where the cut lines from the corners intersect. Further, a sheet material for corners is attached and closed between the folded portions of the airtight waterproof sheet 72.

Next, a step of arranging the new frame 4 in the opening of the building is performed. At this time, since the new frame 4 has no nail fins, the position in the prospective direction can be adjusted. Therefore, the mounting position of the new frame 4 in the prospective direction may be adjusted according to the prospective dimensions (thickness dimensions) of the new exterior material 30, the furring strip 32, and the new heat insulating material 31. For example, the outdoor end surface of the new frame 4 is arranged at a position substantially aligned with the outdoor surface of the new exterior material 30.

Next, the indoor end of the airtight waterproof sheet 72 is folded back to the mounting piece 411,421,431,441 side, which is the indoor part of the new frame 4, and the inner peripheral surface of the mounting piece 411,421,431,441. Perform the process of attaching to the surface using a waterproof double-sided tape or the like. The excess portion of the airtight waterproof sheet 72 may be cut off with a cutter or the like.

Next, the new frame 4 is attached to the skeleton 10 with screws 15. The screw 15 makes a hole in the airtight tarpaulin 72, but since the airtight tarpaulin 72 has swelling property, when water infiltrates, the airtight tarpaulin 72 absorbs water and swells, and a hole formed by the screw 15. Therefore, it is possible to prevent water from entering the indoor side from the airtight tarpaulin 72.

Next, the drainage waterproof sheet 75 is attached between the surface of the airtight waterproof sheet 72 attached to the outdoor surface of the existing upper frame 21 and the inclined portion 63 of the drainage material 60 previously attached 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 drainage waterproof sheet 75. Further, in the existing vertical frames 23 and 24 where the drainage waterproof sheet 75 is not provided, the waterproof sheet 71 is attached to the airtight waterproof sheet 72. As a result, the airtight waterproof sheet 72 is continuously provided on the waterproof layer composed of the waterproof sheet 71.

Further, the new heat insulating material 31 is arranged along the outdoor surface of the existing outer wall 1, and the new exterior material 30 is attached via the furring strip 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.
With the above, the renovation work of the outer wall and the window is completed.

If the new exterior material 30 and the new frame 4 are installed and refurbished, and then the window type is changed, or if the new window is to be replaced due to damage or deterioration of the window, the new exterior material 30 is newly installed. The new frame 4 and the new obstacle 5 can be removed and replaced while leaving the heat insulating material 31 and the like.
In this case, the new cover material 38 and the new frame 36 are removed to expose the indoor side of the new frame 4 and the airtight waterproof sheet 72. Then, the indoor exposed portion of the airtight tarpaulin 72 is cut with a cutter or the like, and the inner peripheral surface of the airtight tarpaulin 72, the portion arranged along the adjusting member 416, 426, the existing frame 26, etc., and the mounting piece 411. , 421, 431, 441 and the part pasted on it are separated.
Further, the wet sealing material 67 and the backup material 66 are also appropriately removed. Further, between the new upper frame 41 and the new heat insulating material 31, the drainage waterproof sheet 75 is cut to separate it from the drainage material 60. Then, the screws 15 fixing the new frame 4 to the skeleton 10 are removed, and the new frame 4 is removed from the opening of the building to the outdoor side.
After that, 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, the airtight waterproof sheet connected to the airtight waterproof sheet 72 is folded back and attached to the inner peripheral surface of the mounting pieces 411,421,431,441, and the new frame 4 is attached to the skeleton 10 with screws 15. It is attached, and a new frame 36 and a new cover material 38 are newly provided to finish. Further, on the outdoor side of the new frame 4, an airtight waterproof sheet connected to the drainage waterproof sheet 75 is attached to the inclined portion 63 of the drainage material 60 of the new frame 4, and the backup material 66 is attached to the gap portion with the new exterior material 30. , Wet sealing material 67 is filled and finished.
Through the above work, the new window can be replaced.

[Action and effect of the first embodiment]
According to such a first embodiment, there are 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 insulating 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 insulating performance of the new frame 4 itself can be improved.
Further, 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, and the existing frame 2 is covered so as not to be exposed to the outside. The heat outflow through the air can be reduced.
Therefore, in addition to reducing the heat flow rate of the outer wall portion by the heat insulating layer 80 and reducing the heat flow rate of the wall opening portion by the new window, the heat flow rate of the connecting portion between the wall and the window can also be reduced, and the heat insulating performance of the entire outer wall can be reduced. Can be improved. Therefore, the temperature drop on the existing frame 2 and the skeleton 10 side can be suppressed, and the occurrence of dew condensation can be prevented.

(2) Since the newly installed shoji 5 arranged in the new frame 4 and the face material of the fitting window are made of triple glass 47 and 57, the heat insulating performance of the face material portion can be improved. Further, in the new shoji 5, since each of the stiles 51, 52, 53, 54 is made of resin, the heat insulating performance of the stile itself can be improved, and the heat insulating performance of the entire new window arranged in the existing frame 2 can be improved.

(3) Of the triple glasses 47,57, at least one glass 471,571,572 was arranged at a position overlapping the heat insulating layer 80 in the prospective direction, so that it was on an extension of the heat insulating line composed of the heat insulating layer 80. , A heat insulating line of a face material composed of triple glass 47, 57 can be arranged. Therefore, the heat insulating lines formed from the new heat insulating material 31 and the heat insulating layer 80 having the air layer 81 to the new frame 4, the new shoji 5 and the like can be arranged substantially parallel to the outer wall surface.
Therefore, as compared with the case where the heat insulating line is set obliquely with respect to the outer wall surface, the heat flow rate through the existing frame 2 can be reduced, and the occurrence of dew condensation around the existing frame 2 can 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 so as to face each other, and between them. Can be filled with a backup material 66 and a wet sealing material 67 and sealed. Therefore, the new frame 4 can be used as a parting material for the new exterior material 30, and a general fitting structure can be obtained.
Further, when the new exterior material 30 is not provided, it is necessary to provide a joint member connecting the new frame 4 and the existing frame 2 to close the gap between the new frame 4 and the existing frame 2. In this case, a normal sealing process can be performed between the new frame 4 and the new exterior material 30, and a joint member connecting the new frame 4 and the existing frame 2 is not required, so that the fitting can be simplified.

(5) Since the estimated 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 estimated 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 insulating 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 and outdoor directions 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 and dimension 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 skeleton 10 from the mounting pieces 411,421,431,441 protruding from the indoor side end of the new frame 4 toward the indoor direction, the inner circumference of the opening The new frame 4 can be attached from the side, and the refurbishment work can be easily performed.

(7) Since the drainage material 60 is attached to the new upper frame 41 and is not attached to the outer wall base material, the furring strip, the skeleton, etc. as in the conventional case, the metal drainage material 60 and the skeleton 10 side are separated from each other. The heat flow rate through the drainage material 60 can be reduced without direct contact, and the heat insulating performance can be improved in this respect as well. In particular, the indoor side of the drainage material 60 is a heat insulating layer 80 composed of a sealed air layer 81, and the waterproof sheet 75 for drainage also has heat insulating properties. The member is not provided, and the heat flow rate from the drainage member 60 to the existing upper frame 21 can be reduced.

(8) When the drainage material is attached to the outer wall side, it is necessary to prepare a plurality of types of drainage materials according to the thickness dimension of the new exterior material 30 and the like. Since it is attached to the new upper frame 41, it can be attached with reference to the outdoor surface of the new upper frame 41. Therefore, even if the thickness dimension of the newly installed exterior material 30 or the like changes, the type of the drainage material 60 can be one type.
Further, since the waterproof sheet 71 and the drainage material 60 are connected by the drainage waterproof sheet 75, even if the thickness dimension of the new exterior material 30 changes and the distance between the waterproof sheet 71 and the drainage material 60 changes. , It can be easily adjusted by the length dimension of the waterproof sheet 75 for drainage.

(9) Since the airtight waterproof sheet 72 that closes between the existing frame 2 and the new frame 4 is attached to the mounting pieces 411, 421, 431, 441 on the indoor side of the new frame 4, after the new frame 4 is attached. Even if the new frame 4 needs to be replaced, the airtight waterproof sheet 72 and the new frame 4 can be separated from each other and the new frame 4 can be easily removed by cutting the portion of the airtight waterproof sheet 72 exposed to the indoor side. be able to. In addition, by connecting a new airtight waterproof sheet to the airtight waterproof sheet 72 remaining in the opening of the building and attaching it to the indoor side of the newly installed new frame 4, waterproofing treatment with the new frame 4 after replacement is also possible. It can be done easily.

[Second Embodiment]
Next, the second embodiment of the present invention will be described with reference to FIGS. 5 to 7. In the second embodiment, only the arrangement of the waterproof sheet in the waterproof structure is different from the first embodiment, and the other configurations are the same as those in the first embodiment. Therefore, the same reference numerals are given to the drawings and the description thereof will be omitted.

In the first embodiment, the waterproof sheet 71 arranged on the indoor side of the new heat insulating material 31 constitutes a waterproof line on the indoor side of the new heat insulating material 31.
On the other hand, in the second embodiment, the waterproof sheet 73 is arranged on the outdoor side of the new heat insulating material 31, and the waterproof line is configured on the outdoor side of the new heat insulating material 31. The waterproof sheet 73 of the second embodiment is composed of a moisture permeable waterproof sheet.
The waterproof sheet 73 is attached to the inclined portion 63 of the drainage member 60 at the portion of the newly installed upper frame 41. Therefore, the lower end side of the waterproof sheet 73 is also used as the drainage waterproof sheet 75.
At the portions of the new lower frame 42 and the new vertical frames 43 and 44, the waterproof sheet 73 is bent from the edge of the new heat insulating material 31 to the outdoor side along the new lower frame 42 and the new vertical frames 43 and 44. It is attached to the new lower frame 42 and the new vertical frames 43 and 44 with double-sided tape or the like.
As a result, the water that has entered the back surface side of the new exterior material 30 is guided to the inclined portion 63 of the drainage material 60 along the waterproof sheet 73, and is discharged to the outdoor side via the drainage component 68.

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

[Action and effect of the second embodiment]
In the second embodiment, the same effects as those in the first embodiment can be obtained.
Further, the waterproof sheet 73 is arranged on the outdoor side of the new heat insulating material 31, and the opening side edge of the waterproof sheet 73 is attached to the drainage material 60, the new lower frame 42, and the new vertical frames 43 and 44. It is possible to prevent rainwater from entering the heat insulating material 31, and it is possible to drain rainwater through a ventilation layer provided with a furring strip 32.

Since the waterproof sheet 74 is provided between the new frame 4 and the drainage material 60 and the existing frame 2 to form the air layer 82 used as the heat insulating layer 80, 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. Therefore, the work of attaching the waterproof sheets 73 and 74 becomes easy, and the waterproof treatment and the refurbishment work can be easily performed.

[Modification example]
The present invention is not limited to the configuration described in the above embodiments, and modifications within the range in which the object of the present invention can be achieved are included in the present invention.

[First modification]
For example, as shown in FIG. 8, the new heat insulating material 31 may be extended to a position where it abuts on the new upper frame 41 to form the heat insulating layer 80. That is, the new heat insulating material 31 is formed with a recess 311 in which the fixing portion 61 of the drainage 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 modification, the airtight waterproof sheet 72 is arranged between the existing frame 2 and the new frame 4 as in the first embodiment. Further, in the modified example of FIG. 8, similarly to the second embodiment, the waterproof sheet 73 is arranged on the outdoor side of the new heat insulating material 31 to set the airtight and watertight line, and the new heat insulating material 31 is the new upper frame 41. Is continuous until. Therefore, it is not necessary to provide the waterproof sheet 74 for forming the air layer 82 described in the second embodiment.

[Second modification]
The configuration for draining the water that has entered the back surface side of the new exterior material 30 is not limited to the one using the drainage material 60, and as shown in FIG. 9, the new heat insulating material 31 is waterproofed from the outdoor surface to the new frame 4. A sheet 73 is attached, and a gutter-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. It may be configured as. A waterproof tape 96 is attached across the waterproof sheet 73 and the drainage member 90, and the rainwater that has flowed down the waterproof sheet 73 is configured to surely flow to the drainage member 90 via the waterproof tape 96. ing.
For example, the water received by the drainage member 90 forms a drainage passage on the outer peripheral side of the newly installed vertical frames 43 and 44, and drains the water from both ends in the longitudinal direction of the drainage member 90 to the outside through the drainage passage. It may be configured.

[Other variants]
The new frame 4 is not limited to being made of resin, but may be made of wood, and may be made of a heat insulating member having higher heat insulating performance than a metal material such as aluminum.
Further, the new frame 4 is not limited to a frame entirely composed of a heat insulating member made of resin or wood, but is composed of a composite frame in which a non-insulating member such as aluminum and a heat insulating member such as resin are combined. May be good. For example, a composite frame in which the mounting pieces 411, 421, 431, 441 of the new frame 4 are replaced with a metal material such as aluminum may be used.
In short, as a new frame, at least a portion continuous with the heat insulating layer 80 to a portion covering the inner peripheral surface of the existing frame 2 is composed of a heat insulating member, and the heat insulating layer 80 and the heat insulating member of the new frame 4 form the existing frame 2 It suffices if it can be covered so that it is not exposed to the outdoor side. Therefore, in the new frame 4, the mounting piece portion fixed by the screw 15 on the indoor side of the existing frame 2 and the outer wall parting portion arranged on the outdoor side of the heat insulating line may be composed of non-insulating members. ..
Similarly, the new stile of the new sash 5 is not limited to the one made of resin, and may be made of wood, or may be composed of a composite stile in which a non-insulating member such as aluminum and a heat insulating member such as resin are combined. In this case, the portion overlapping the heat insulating layer 80 in the prospective direction of the new stile 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 new stile form a continuous heat insulating line. It should be configured.

In the above embodiment, the outer peripheral surface of the new frame 4 is a flat surface, but a structure in which nail fins are projected may be used. In this case, if the nail fins can be brought into contact with the existing frame 2 for positioning, the new frame 4 can be attached while leaving the nail fins, but if the positioning cannot be performed due to the nail fins, the nail fins are cut at the construction site. There is a need to. Therefore, there is an advantage that the construction work becomes easier when the outer peripheral surface of the new frame 4 is made flat as in each of the above-described embodiments.

The length dimension L2 from the outdoor surface of the new exterior material 30 to the indoor side end 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 end of the existing frame 2. You may. 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 triple glass 47 and 57, but may be double glazing (double glazing), and may have higher heat insulating performance than general single glass.
Further, the face material of the new window is not limited to the one in which the position of at least one piece of glass in the prospective direction is arranged 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 or the like in the outer wall are almost the same in the prospective direction, and the positions in the prospective direction are almost the same with respect to the outer wall surface. It is preferable that the heat insulating lines are substantially parallel in that the heat insulating performance can be improved.

The new windows are not limited to the above-mentioned continuous windows of the vertical sliding window and the FIX window, but are single windows such as sliding windows, single-sided raising and lowering windows, FIX windows, vertical sliding windows, and sliding windows, and a combination of these. It may be a window, a stepped window, or the like. That is, since the new frame 4 is also remodeled as the new window, various types of windows can be applied.

1 ... Existing outer wall, 2 ... Existing frame, 3 ... New outer wall, 4 ... New frame, 5 ... New tarpaulin, 10 ... Frame, 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 ... furring strip, 41 ... new upper frame, 42 ... new lower frame, 43, 44 ... new vertical frame, 47, 57 ... triple glass , 51 ... upper stile, 52 ... lower stile, 53, 54 ... vertical stile, 60 ... drainage material, 71 ... tarpaulin, 72 ... airtight tarpaulin, 73 ... tarpaulin, 74 ... tarpaulin, 75 ... tarpaulin for drainage , 80 ... Insulation layer, 81, 82 ... Air layer, 471, 571, 572 ... Glass.

Claims (3)

New exterior materials are placed on the outdoor side of the existing outer wall of the building,
A new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall.
A new heat insulating material is provided between the existing outer wall and the new exterior material.
The new heat insulating material is extended to a position where it abuts on the prospective surface of the new frame or a position facing the prospective surface of the new frame through a sealed air layer, and the shop on the finding surface of the existing frame. Placed on the outside,
The new frame is composed of a heat insulating member from at least a position where it abuts or faces the new heat insulating material to a position of an indoor end portion of an inner peripheral surface of the existing frame in a prospective direction.
The new frame is provided with a new upper frame, and the existing frame is provided with an existing upper frame.
The outer wall refurbished structure, wherein the air layer is a closed space surrounded by a waterproof sheet, a drainage material, and the new upper frame or the new heat insulating material. New exterior materials are placed on the outdoor side of the existing outer wall of the building,
A new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall.
A new heat insulating material is provided between the existing outer wall and the new exterior material.
The new heat insulating material is extended to a position where it abuts on the prospective surface of the new frame or a position facing the prospective surface of the new frame through a sealed air layer, and the shop on the finding surface of the existing frame. Placed on the outside,
The new frame is composed of a heat insulating member from at least a position where it abuts or faces the new heat insulating material to a position of an indoor end portion of an inner peripheral surface of the existing frame in a prospective direction.
The existing frame is composed of an existing upper frame, an existing lower frame, and an existing vertical frame.
The new frame is made of synthetic resin, and is composed of a new upper frame, a new lower frame, and a new vertical frame.
The new lower frame and the new heat insulating material that come into contact with the outer peripheral surface of the new vertical frame are arranged on the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction.
The new heat insulating material and a sealed air layer are provided on the outdoor side of the existing upper frame in the prospective direction.
The air layer includes the new upper frame, a drainage material fixed to the upper surface of the new upper frame, a waterproof sheet provided between the drainage material and the existing upper frame, and the existing upper frame and the new installation. An exterior wall refurbished structure characterized by being separated from a tarpaulin provided between the frames. New exterior materials are placed on the outdoor side of the existing outer wall of the building,
A new frame is arranged on the inner peripheral side of the opening of the existing frame arranged in the opening of the existing outer wall.
A new heat insulating material is provided between the existing outer wall and the new exterior material.
The new heat insulating material is extended to a position where it abuts on the prospective surface of the new frame or a position facing the prospective surface of the new frame through a sealed air layer, and the shop on the finding surface of the existing frame. Placed on the outside,
The new frame is composed of a heat insulating member from at least a position where it abuts or faces the new heat insulating material to a position of an indoor end portion of an inner peripheral surface of the existing frame in a prospective direction.
The existing frame is composed of an existing upper frame, an existing lower frame, and an existing vertical frame.
The new frame is made of synthetic resin, and is composed of a new upper frame, a new lower frame, and a new vertical frame.
The new lower frame and the new heat insulating material that come into contact with the outer peripheral surface of the new vertical frame are arranged on the outdoor side of the existing lower frame and the existing vertical frame in the prospective direction.
The new heat insulating material and a sealed air layer are provided on the outdoor side of the existing upper frame in the prospective direction.
The air layer includes the new upper frame, a drainage material fixed to the upper surface of the new upper frame, a waterproof sheet provided between the drainage material and the new heat insulating material, and the existing upper frame and the drainage material. An exterior wall refurbished structure characterized by being separated from a tarpaulin provided between them.

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