JP2018031186A - Waterproof structure of building opening and its construction method - Google Patents

Abstract

An object of the present invention is to provide a waterproof structure for a building opening that is easy to construct and has high watertightness and airtightness, and a construction method thereof. A waterproof structure of a building opening formed on an outer wall 3 of a building and having a window frame 4 disposed thereon. The outer wall 3 includes a new exterior material 30 and a waterproof sheet 71 provided on the indoor surface side of the new exterior material 30. A wet sealing material 67 and a backup material 66 that block between the window frame 4 and the new exterior material 30, and an airtight waterproof sheet 72 that is provided continuously with the waterproof sheet 71 and is attached to the window frame 4 are provided. [Selection] Figure 1

Description

  The present invention relates to a waterproof structure for a building opening into which a window sash is incorporated, and a method for constructing the waterproof structure.

When a new window frame is incorporated in a building opening provided on the outer wall, it is common to fill and seal a wet sealant between the exterior material and the window frame.
Further, there is a case where a reforming frame is installed on the inner peripheral surface of the existing frame (see, for example, Patent Document 1), and a packing material is attached to the reforming frame body of Patent Document 1, and this packing The material is sealed in close contact with the existing frame.

Japanese Patent No. 5394205

  However, in any of the newly installed or renovated window frames, there has been a problem that watertightness / airtightness is lowered when a sealing material or a packing material is damaged or deteriorated.

  An object of the present invention is to provide a waterproof structure for a building opening that is easy to construct and has high watertightness and airtightness, and a construction method thereof.

  The present invention is a waterproof structure of a building opening formed on the outer wall of a building and in which a window frame is disposed, and the outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material. And an outdoor-side sealing material that blocks between the window frame and the exterior material, and an airtight waterproof sheet that is provided continuously with the waterproof layer and is attached to the window frame.

According to the present invention, the outdoor side sealing material that closes the space between the window frame and the exterior material can be used as a primary seal, and the airtight waterproof sheet that closes the space between the waterproof layer and the window frame can be used as a secondary seal. Even when the material is damaged or deteriorated, a waterproof line that continues to the window frame can be maintained on the indoor surface side of the exterior material by the waterproof layer and the airtight waterproof sheet that continues to the waterproof layer. For this reason, it is possible to prevent water from entering the indoor side of the waterproof rye, and the watertightness and airtightness compared to the case where only the primary seal is provided or the waterproof layer and the airtight waterproof sheet are not continuous. Can be improved.
Moreover, since the airtight waterproof sheet continuously provided on the waterproof layer can be attached to the window frame with a double-sided tape or the like, the construction work is easy.
In addition, the outdoor side seal as the primary seal and the waterproof layer and waterproof airtight seal as the secondary seal are provided, so that the exterior material and the space between the waterproof layer and the airtight waterproof sheet are in the same pressure space as the outside air. It is possible to prevent rainwater from entering due to a pressure difference and to improve water tightness and air tightness.

  In the waterproof structure of the building opening of the present invention, the airtight waterproof sheet is folded from the outer peripheral side of the window frame to the inner peripheral side of the window frame via an indoor edge and is attached to the window frame. It is preferable.

According to the present invention, since the airtight waterproof sheet is folded from the outer peripheral surface of the window frame to the inner peripheral side of the window frame via the indoor edge of the window frame, the airtight waterproof sheet is attached to the inner peripheral surface of the window frame. It can be pasted on the indoor side of the window frame.
For this reason, the operation | work which affixes an airtight waterproof sheet on a window frame can be performed from the inner peripheral surface side of a window frame, ie, the opening side of a window frame, and can work easily. In addition, since the airtight waterproof sheet is exposed on the inner peripheral side of the window frame, when replacing the window frame, the exposed portion of the airtight waterproof sheet is cut to separate the airtight waterproof sheet from the window frame. Can be removed. In addition, after removing the window frame, the airtight waterproof sheet that is continuous with the waterproof layer remains, so connect the new airtight waterproof sheet, place the new window frame, and paste it on the inner peripheral surface of the window frame. By attaching it, it is possible to easily restore the waterproof line when replacing the window.

  In the waterproof structure for a building opening according to the present invention, the building opening is formed by an inner peripheral surface of an existing frame, and the window frame is a new frame disposed on the inner peripheral side of the existing frame, and the exterior material Is a new exterior material disposed on the outdoor side of the existing outer wall, a waterproof layer made of a waterproof sheet is provided between the existing outer wall and the new exterior material, and the airtight waterproof sheet is the waterproof It is preferable that the sheet is composed of a part of the sheet or a separate airtight waterproof sheet that is continuous with the waterproof sheet.

  According to the present invention, a waterproof sheet is formed on the outdoor side of the existing outer wall to form a waterproof layer, a new exterior material is arranged on the outdoor side of the waterproof sheet, and a new frame is arranged on the inner peripheral side of the opening of the existing frame In addition, since a part of the waterproof sheet or a separate airtight waterproof sheet is attached to the new frame, the outer wall, window, and waterproof line can be easily refurbished.

  In the waterproof structure for a building opening according to the present invention, the airtight waterproof sheet preferably has flexibility.

  According to the present invention, since the airtight waterproof sheet can be provided by being bent, it is possible to bend the airtight waterproof sheet in accordance with the shape of the window frame of various shapes and securely attach the window sheet to the window frame. It is possible to easily secure watertightness and airtightness from the waterproof layer to the window frame.

  In the waterproof structure of the building opening of the present invention, it is preferable that the airtight waterproof sheet has a property of swelling with water.

  According to the present invention, the airtight waterproof sheet swells even when water enters the hole formed by screwing the screw through the airtight waterproof sheet or the damaged portion when the airtight waterproof sheet is damaged. , Water can be prevented from entering the indoor side of the window frame beyond the airtight waterproof sheet, and higher waterproof performance can be provided.

  The present invention is a method for constructing a waterproof structure of a building opening formed on the outer wall of a building and in which a window frame is disposed, the step of providing a waterproof layer on the indoor surface side of the exterior material constituting the outer wall, Around the opening of the building, attaching the outdoor side end of the hermetic waterproof sheet continuous to the waterproof layer, arranging the hermetic waterproof sheet along the inner peripheral surface of the building opening, and the building A step of disposing the window frame in the opening; and a step of attaching an indoor side end of the airtight waterproof sheet to a portion of the window frame on the indoor side.

  According to the present invention, an airtight waterproof sheet continuous with a waterproof layer provided on the indoor surface side of the exterior material is attached to the periphery of the building opening and the indoor side portion of the window frame, so that the window from the waterproof layer The waterproof line can be easily configured up to the frame, and watertightness and airtightness can be easily secured. Also, a wet sealant is not used between the time when the waterproof layer is provided and the window frame is placed and the airtight waterproof sheet is attached to the window frame to form the waterproof line from the waterproof layer to the window frame. Therefore, the construction time on site can be shortened.

  ADVANTAGE OF THE INVENTION According to this invention, construction is easy and the waterproof structure of a building opening part provided with high watertightness and airtightness, and its construction method can be provided.

The longitudinal cross-sectional view which shows the waterproof structure of the building opening part of 1st Embodiment of this invention. The cross-sectional view which shows the waterproof structure of the building opening part of 1st Embodiment. The perspective view which shows the principal part of the waterproof structure of the building opening part of 1st Embodiment. The longitudinal cross-sectional view which shows the waterproof structure of the building opening part of 2nd Embodiment of this invention. The longitudinal cross-sectional view which shows the waterproof structure of the building opening part of 3rd Embodiment of this invention.

[First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.
In this embodiment, as shown in FIGS. 1 to 3, the waterproof structure of the building opening is renovated by leaving the existing outer wall 1 and the existing frame 2 of the building and newly installing the new outer wall 3, the new frame 4, and the new shoji 5. It is.
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 window]
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.

Further, the length of the expected method from the outdoor surface of the new exterior material 30 to the indoor side edge of the existing frame 2 is the length of the expected method from the outdoor surface of the new exterior material 30 to the indoor side edge of the new frame 4. It is set to be smaller than the size. 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) are also the same length in the prospective direction.
The dimensions of the prospective direction of the new frame 4 are set so that the mounting pieces 411, 421, 431, and 441 are located on the indoor side of the existing frame 2. 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 (outdoor side sealing material) 67 are filled between the inclined portion 63 and the newly installed 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. Has been placed.

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 and 2, 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 FIG. 2, the airtight waterproof sheet 72 is attached to the outdoor surface of the existing vertical frames 23 and 24 with a double-sided tape or the like between the existing vertical frames 23 and 24 and the new vertical frames 43 and 44. 23 and 24 and the inner surface of the existing frame 26 are arranged. 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, in the opening portion where the new window is arranged, at least one of the triple glasses 47 and 57 is arranged in a heat insulation line connecting the new heat insulating materials 31.
In the triple glass 47 of the FIX window, the glass arranged on the most outdoor side is arranged at a position overlapping the heat insulating layer 80 in the prospective direction.
In the triple glass 57 of the newly installed shoji 5 of the sliding sliding window, the glass arranged on the most outdoor side and the glass arranged in the middle are arranged at a position overlapping the heat insulating layer 80 in the prospective direction.
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 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) The waterproof sheet 71 constituting the waterproof layer is provided from the outdoor surface of the new heat insulating material 31 to the existing frame 2, and the airtight waterproof sheet 72 continuous with the waterproof sheet 71 is disposed from the existing frame 2 to the new frame 4. Therefore, the wet sealant 67 that seals between the newly installed frame 4 and the newly installed exterior member 30 can be used as a primary seal, and the waterproof sheet 71 and the airtight waterproof sheet 72 can be used as secondary seals. Thereby, even when the wet sealing material 67 is damaged or deteriorated, the waterproof line can be maintained by the waterproof sheet 71 and the airtight waterproof sheet 72, and water can be prevented from entering the indoor side. For this reason, compared with the case where only the wet sealing material 67 is provided or the waterproof sheet 71 and the airtight waterproof sheet 72 are not continuous, the watertightness and airtightness can be improved.
Moreover, since the airtight waterproof sheet 72 continuing to the waterproof sheet 71 can be attached to the new frame 4 or the existing frame 2 with a double-sided tape or the like, construction work can be easily performed.
Further, since the wet sealant 67 serving as the primary seal and the waterproof sheet 71 and the airtight waterproof sheet 72 serving as the secondary seal are provided, the external exterior member 30 and the space between the waterproof sheet 71 and the airtight waterproof sheet 72 are outside air. It is possible to create a space with the same pressure, prevent intrusion of rainwater due to a pressure difference, and improve water tightness and air tightness.

(2) The airtight waterproof sheet 72 that closes the space between the existing frame 2 and the new frame 4 is folded back from the outer peripheral side of the new frame 4 to the inner peripheral surfaces of the mounting pieces 411, 421, 431, 441 on the indoor side of the new frame 4. Therefore, the airtight waterproof sheet 72 can be pasted on the indoor side of the new frame 4 so as to be continuous.
For this reason, the operation | work which sticks the airtight waterproof sheet 72 to the new installation frame 4 can be performed from the inner peripheral surface side of the new installation frame 4, and can work easily.
Further, since the airtight waterproof sheet 72 is exposed on the inner peripheral side of the new frame 4, even if the new frame 4 needs to be replaced after the new frame 4 is attached, the portion exposed to the indoor side of the airtight waterproof sheet 72 By cutting the airtight waterproof sheet 72 and the new frame 4, the new frame 4 can be easily removed. Furthermore, 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, the waterproof treatment with the newly installed new frame 4 is also possible. It can be easily performed, and the waterproof line can be easily restored when replacing the window.

(3) The waterproof sheet 71 is disposed on the outdoor side of the existing outer wall 1 to form a waterproof layer, the new exterior material 30 is disposed on the outdoor side of the waterproof sheet, and the new frame 4 is provided on the inner peripheral side of the opening of the existing frame 2. Since the airtight waterproof sheet 72 continuous with the waterproof sheet 71 is attached to the new frame 4, the outer wall, the window, and the waterproof line can be easily refurbished.
In addition, since the airtight waterproof sheet 72 is flexible and can be bent, the airtight waterproof sheet 72 can be arranged in accordance with the new frame 4 having various shapes. The waterproof sheet 72 can be bent and attached to the inner peripheral surface side of the new frame 4. For this reason, the watertightness and airtightness from the waterproof layer to the new frame 4 can be easily secured.
Further, since the airtight waterproof sheet 72 has a characteristic of swelling with water, water formed in the holes formed by screwing the screws 15 through the airtight waterproof sheet 72 or damaged portions when the airtight waterproof sheet 72 is damaged. Even when the airtight waterproof sheet 72 enters, the airtight waterproof sheet 72 swells, so that it is possible to prevent water from entering the indoor side of the new frame 4 beyond the airtight waterproof sheet 72 and to have higher waterproof performance.

(4) The airtight waterproof sheet 72 continuous with the waterproof sheet 71 provided on the indoor surface side of the new exterior material 30 is arranged around the building opening (the outdoor surface of the existing frame 2) and the indoor side portion of the new frame 4 ( By attaching to the attachment pieces 411, 421, 431, 441), a waterproof line can be easily configured from the waterproof sheet 71 to the new frame 4, and watertightness and airtightness can be easily secured. Further, a wet sealing is provided between the time when the waterproof sheet 71 is provided, the new frame 4 is disposed, the airtight waterproof sheet 72 is attached to the new frame 4 and the waterproof line from the waterproof sheet 71 to the new frame 4 is formed. Since no material is used, the construction time at the site can be shortened.

(5) 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.

(6) 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.

(7) Since at least one of the triple glasses 47 and 57 is disposed at a position overlapping the heat insulating layer 80 in the prospective direction, the triple glass 47, The heat insulation line of the face material comprised by 57 can be arrange | positioned. 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 in the wall body around the existing frame 2 can also be suppressed.

(8) Since the outdoor side end portion 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.

(9) Since the expected dimension 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 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 frame 2 can be covered with the new frame 4, and the heat insulation performance and design can be improved.

(10) 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 dimensions of the new exterior material 30 and the new heat insulation 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.

(11) 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.

(12) 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.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is an upper drainage structure of a building opening for new construction, not for renovation, and is different from the first embodiment in that the existing outer wall 1 and the existing frame 2 are not provided. Since the configuration is the same as that of the first embodiment, the corresponding components are denoted by the same reference numerals and description thereof is omitted.

  On the outdoor side of the housing 10 of the second embodiment, a new heat insulating material 31, a trunk edge 32, and a new exterior material 30 are arranged. A new frame 4 is fixed with screws 15 in the opening surrounded by the housing 10, and a new shoji 5 is provided in the new frame 4 so that it can be opened and closed.

An airtight waterproof sheet 73 is affixed to the surface of the housing 10 located on the indoor side of the new heat insulating material 31. The opening side edge of the airtight waterproof sheet 73 is folded indoors along the inner peripheral surface of the housing 10, bent along the indoor surface of the adjustment member 415 and the mounting piece 411, and further the inner peripheral surface of the mounting piece 411. It is pasted with double-sided tape.
In the second embodiment, a waterproof sheet that is disposed on the indoor side of the new exterior material 30 and constitutes a waterproof layer, and an airtight waterproof sheet that closes the waterproof layer to the new frame 4 are configured as an integral airtight waterproof sheet 73. Yes. That is, a part of the airtight waterproof sheet 73 constituting the waterproof layer is used as an airtight waterproof sheet that covers from the waterproof layer to the new frame 4. For this reason, the airtight waterproof sheet 73 forms a waterproof line that continues from the indoor side of the new exterior material 30 to the new frame 4.

In addition, a draining waterproof sheet 75 is provided from the airtight waterproof sheet 73 to the draining material 60 as in the first embodiment.
The indoor side end of the water draining waterproof sheet 75 is affixed to the surface (outdoor surface) of the airtight waterproof sheet 73 with a double-sided tape or the like on the back side of the newly-installed heat insulating material 31, and is provided continuously to the airtight waterproof sheet 73. It has been.
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 airtight waterproof sheet 73 at the indoor side end, and the surface of the water draining waterproof sheet 75 is inclined downward from the indoor end to the outdoor side end. It is provided to become.
Therefore, the rainwater that has entered between the newly-installed heat insulating material 31 and the housing 10 flows along the airtight waterproof sheet 73, 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.
As in the first embodiment, the air layer 81 is partitioned by the water draining waterproof sheet 75 and the airtight waterproof sheet 73, and constitutes the heat insulating layer 80 together with the new heat insulating material 31.

[Effects of Second Embodiment]
In 2nd Embodiment, since the airtight waterproof sheet 73 used as a waterproof layer is affixed on the new frame 4, and the waterproof line is comprised, there can exist an effect similar to the said 1st Embodiment.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. The third embodiment is the same as the second embodiment in that it has a waterproof structure for a new building opening. However, no new heat insulating material is provided, and instead of the drainer 60, The point which attached the member 90 for drainage in shape is different. In addition, the same code | symbol is attached | subjected to the structure corresponding to 1st, 2 embodiment, and description is abbreviate | omitted.

  In the third embodiment, a trunk edge 32 and a new exterior material 30 are arranged on the outdoor side of the housing 10. A new frame 4 is fixed with screws 15 in the opening surrounded by the housing 10, and a new shoji 5 is provided in the new frame 4 so that it can be opened and closed.

  An airtight waterproof sheet 73 is affixed to the surface of the housing 10 located on the indoor side of the new exterior material 30 and the surface of the base material (not shown). The opening side edge of the airtight waterproof sheet 73 is folded indoors along the inner peripheral surface of the housing 10, bent along the indoor surface of the adjustment member 415 and the mounting piece 411, and further the inner peripheral surface of the mounting piece 411. It is pasted with double-sided tape.

A drainage member 90 is attached to an airtight waterproof sheet 73 attached to the outdoor surface of the housing 10. The drainage member 90 includes an indoor wall portion 91, an outdoor wall portion 92, and a bottom surface portion 93 that connects the indoor wall portion 91 and the outdoor wall portion 92.
The indoor wall portion 91 is fixed to the airtight waterproof sheet 73 and the housing 10 with screws 16. Further, a waterproof tape 96 is applied across the airtight waterproof sheet 73 and the indoor wall portion 91.

  A wet sealing material 67 is filled between the new exterior material 30 and the new upper frame 41. At this time, if the wet sealing material 67 adheres not only to the newly installed exterior material 30 and the newly installed upper frame 41 but also to the drainage member 90, it becomes a three-sided adhesive and the durability is lowered. For this reason, a bond breaker tape 95 that prevents adhesion of the wet sealant 67 is affixed to the outdoor surface of the outdoor wall portion 92.

  The water that has entered between the newly installed exterior member 30 and the airtight waterproof sheet 73 flows from the airtight waterproof sheet 73 to the drainage member 90 via the waterproof tape 96, and from both ends of the drainage member 90 to the outer peripheral side of the new frame 4. It is discharged to the outside through a drainage passage provided.

[Effects of Third Embodiment]
According to the third embodiment, since the waterproof line is constituted by the airtight waterproof sheet 73 continuous from the waterproof layer to the new frame 4, the same operational effects as those of the first and second embodiments can be achieved.
Further, when the new frame 4 is replaced, the airtight waterproof sheet 73 and the drainage member 90 can be left on the wall side, so that the replacement 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.

  In the first embodiment, the waterproof sheet 71 constituting the waterproof layer and the airtight waterproof sheet 72 are configured as separate waterproof sheets. However, as in the second and third embodiments, the outdoor of the existing outer wall 1 is outdoor. An integral airtight waterproof sheet 73 may be arranged from the surface to the new frame 4. Similarly, in the said 2nd, 3rd embodiment, the waterproof sheet 71 affixed on the outdoor surface of the housing 10 and forming a waterproof layer, and the waterproof sheet affixed from a waterproof layer to the new installation frame 4 similarly to 1st Embodiment. An airtight waterproof sheet 72 that is separate from 71 may be disposed.

The airtight waterproof sheets 72 and 73 are folded back to the inner peripheral side through the indoor edge of the new frame 4 and pasted to the new frame 4, but may be pasted to the outer peripheral surface of the new frame 4.
The new frame 4 is not limited to resin, but may be made of wood, a composite frame made of aluminum and resin, or may be a general aluminum frame, which is selected according to the heat insulation performance required for the new frame 4. That's fine.

  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 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 from the outdoor surface of the new exterior material 30 to the indoor side edge of the existing frame 2. Also good. 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 glass 47, 57, and may be a double-layer glass (double glass) or a general single plate glass, and these are selected according to the heat insulating performance required for the new window. do it.

  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, 30 ... New exterior material, 67 ... Wet sealing material which is an outdoor side sealing material 71 ... Waterproof sheet as a waterproof layer, 72 ... Airtight waterproof sheet, 73 ... Airtight waterproof sheet also used as a waterproof layer, 75 ... Water draining waterproof sheet, 411, 421, 431, 441 ... Mounting piece.

Claims (6)

It is a waterproof structure of a building opening formed on the outer wall of the building and in which a window frame is arranged,
The outer wall includes an exterior material and a waterproof layer provided on the indoor surface side of the exterior material,
An outdoor-side sealing material that plugs between the window frame and the exterior material;
A waterproof structure for a building opening, comprising: an airtight waterproof sheet provided continuously to the waterproof layer and attached to the window frame. In the waterproof structure of the building opening part according to claim 1,
The airtight waterproof sheet is folded from the outer peripheral side of the window frame to the inner peripheral side of the window frame through an indoor edge, and is attached to the window frame. . In the waterproof structure of the building opening part according to claim 1 or claim 2,
The building opening is formed on the inner peripheral surface of the existing frame,
The window frame is a new frame arranged on the inner peripheral side of the existing frame,
The exterior material is a new exterior material disposed on the outdoor side of the existing outer wall,
A waterproof layer composed of a waterproof sheet is provided between the existing outer wall and the new exterior material,
The waterproof structure of a building opening, wherein the airtight waterproof sheet is configured by a part of the waterproof sheet or a separate airtight waterproof sheet that is continuous with the waterproof sheet. In the waterproof structure of the building opening part according to any one of claims 1 to 3,
The waterproof structure of a building opening, wherein the airtight waterproof sheet has flexibility. In the waterproof structure of the building opening part according to any one of claims 1 to 4,
The waterproof structure for a building opening, wherein the airtight waterproof sheet has a property of swelling with water. A construction method of a waterproof structure of a building opening formed on the outer wall of a building and in which a window frame is arranged,
Providing a waterproof layer on the indoor side of the exterior material constituting the outer wall;
In the periphery of the building opening, a step of attaching an outdoor side end of an airtight waterproof sheet continuous with the waterproof layer;
Arranging the airtight waterproof sheet along the inner peripheral surface of the building opening;
Arranging the window frame in the building opening;
The step of attaching the indoor side end of the airtight waterproof sheet to the indoor side portion of the window frame;
The construction method of the waterproof structure of the building opening part characterized by having.

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