JP3207304U - Thermal insulation and heat insulation wall structure - Google Patents

Abstract

A heat insulating and heat insulating wall structure capable of reliably discharging heat and moisture trapped in a ventilation layer while effectively operating a heat shielding function in an outer wall ventilation layer construction method in which a heat shielding sheet is disposed. provide. A heat insulating and heat insulating wall structure includes a heat insulating material incorporated in a housing, a moisture permeable waterproof sheet disposed outside the heat insulating material, and a heat insulating sheet disposed outside the moisture permeable waterproof sheet. 49, an external airflow inlet and an outlet, and are secured as spaces for ventilation between the heat shield sheet 49 and the moisture permeable waterproof sheet 47 and between the heat shield sheet 49 and the outer wall member 41, respectively. 1st and 2nd ventilation layer 60A, 60B is provided. In the first and second ventilation layers 60A and 60B, for example, on the side of the external airflow inlets 60a1 and 60a2, convection in the ventilation layers 60A and 60B is suppressed, and moisture in the ventilation layers 60A and 60B is discharged to the outside. Polyester insulations 42A, 42B are provided to enable. [Selection] Figure 4

Description

  The present invention relates to a heat insulating wall structure installed in various houses, and more particularly to a heat insulating heat insulating wall structure in which a moisture permeable waterproof sheet, a heat insulating sheet, and a ventilation layer are laminated on the outside of a heat insulating material.

  In general, in a house, particularly a wooden house, an outer wall ventilation layer construction method as disclosed in Non-Patent Document 1 may be employed in constructing an outer wall that forms a heat insulating wall structure. Usually, in such an outer wall ventilation layer construction method, a moisture-permeable waterproof sheet and a ventilation layer are sequentially laminated on the outside of the heat insulating material.

  Specifically, moisture from the interior of the house is allowed to permeate to the outside of the pillar-shaped load bearing surface material arranged on the pillars and inter-columns constituting the housing, or on the outside of the pillars and inter-columns constituting the housing. In addition, a moisture-permeable waterproof sheet that prevents water from entering the interior of the house from the outdoor part of the house is disposed, and a ventilation layer is formed on the outside of the moisture-permeable waterproof sheet. In addition, the ventilation layer generally has a ventilation trunk edge interposed between the moisture-permeable waterproof sheet and the outermost wall finishing material of the outermost layer (the ventilation cylinder edge is disposed outside the moisture-permeable waterproof sheet at a predetermined interval). To ensure a space for ventilation between the outer wall finishing material and the moisture permeable waterproof sheet.

  According to such an outer wall ventilation layer construction method, since hot air, cold air, and moisture generated on the back side (inner side) of the outer wall can be discharged through the ventilation layer, adverse effects on the structural frame of the house (deterioration of the frame, etc.) can be reduced. .

  Moreover, in such an outer wall ventilation layer construction method, in addition to the moisture permeable waterproof sheet, a heat shield sheet may be used in addition to the moisture permeable waterproof sheet. Usually, the heat shielding sheet has a structure in which radiant heat is stopped and the water permeability is low (there is also a water permeability of 0%).

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  By the way, when trying to add a heat shield sheet in the outer wall vent layer construction method in which a breathable layer is provided outside the moisture permeable waterproof sheet, as described above, the heat shield sheet has a characteristic of extremely low water permeability. Condensation will occur in the surface area. Therefore, it is preferable to provide a ventilation layer on both sides of the heat shield sheet so that condensation does not occur.

  However, in a heat insulating wall structure (inner heat insulating wall structure having a heat insulating material inside a moisture permeable waterproof sheet) associated with a general outer wall vent layer construction method, for example, hot air or cold air from the outside of the air vent layer (external air flow inlet) The intrusion causes a problem that convection occurs in the ventilation layer. And when convection occurs in the ventilation layer, the intruded hot air or cold air is transmitted to the structural housing by heat conduction, and even if a folding sheet or a heat insulating sheet is provided, the heat insulating function will not work effectively. . Of course, such convection is caused by the circulation of the outside air due to the presence of the ventilation layer. However, if there is no ventilation layer (a static air layer that does not cause convection exists between the moisture-permeable waterproof sheet and the outer wall finishing material). ), It becomes difficult to discharge moisture permeated through the moisture permeable waterproof sheet from the inside of the house to the outside.

  That is, in the outer wall ventilation layer construction method, when using a heat shielding sheet in addition to the moisture permeable waterproof sheet, it is necessary to dispose a double ventilation layer so as not to cause condensation. In the structure, the heat shield function of the heat shield sheet is difficult to work effectively due to the convection generated in each vent layer, but if the air circulation function of each vent layer does not work effectively, the moisture permeable waterproof sheet is passed through from the inside of the house. There arises a problem that it is difficult to discharge the permeated moisture, the moisture permeated through the outer wall, and heat accumulated in the ventilation layer to the outside.

  The present invention has been made paying attention to the above-mentioned problems. In the outer wall ventilation layer construction method in which the heat shielding sheet is disposed, the heat and moisture accumulated in the ventilation layer are effectively transferred to the outside while the heat shielding function is effectively operated. An object of the present invention is to provide a heat insulating and heat insulating wall structure that can be reliably discharged.

  In order to achieve the above-described object, the heat-insulating and heat insulating wall structure of the present invention includes a heat insulating material incorporated in a housing and an outer side of the heat insulating material, allowing moisture from the inside to permeate to the outside, and from the outside to the inside. A moisture permeable waterproof sheet that prevents water from entering the surface, a heat shield sheet that is disposed outside the moisture permeable waterproof sheet and blocks heat from the outside, an external airflow inlet, and an outlet. It has the 1st ventilation layer secured as a space for ventilation between a heat sheet and the moisture-permeable waterproof sheet, an external air current entrance, and an outflow mouth, and is arranged on the heat shield sheet and the outside. A second ventilation layer secured as a space for ventilation between the outer wall material, and the first and second ventilation layers include the outer airflow inlet side and the outlet port side. The air stays on at least one side of the airflow without suppressing the inflow of outside air and causing convection. Wherein the polyester heat-insulating material to allow discharge moisture of the ventilation layer to the outside to form an air retention layer volume is provided.

  According to the above-described heat insulating and heat insulating wall structure (inner heat insulating wall structure having a heat insulating material inside the moisture permeable waterproof sheet), it is possible to exhibit a sufficient heat insulating effect by arranging the heat insulating sheet, and the heat insulating sheet. Condensation can be effectively prevented by the presence of the first ventilation layer and the second ventilation layer on both sides. And the convection in the 1st and 2nd ventilation layer is suppressed by the polyester heat insulating material arrange | positioned in the 1st and 2nd ventilation layer in at least one side of an external airflow inlet side and an outflow port side. On the other hand, moisture accumulated in the first and second ventilation layers (humidity that permeates the moisture-permeable waterproof sheet and moisture that permeates the outer wall from the inside) can be discharged to the outside. That is, the polyester heat insulating material has a function of heat insulation and excellent exhaust heat and moisture exhaust properties, and the inflow of outside air to the first and second ventilation layers (hot air into the first and second ventilation layers). Intrusion of cold air) is suppressed, and an air retention layer that allows air retention is formed in the first and second ventilation layers, and convection in these ventilation layers is suppressed.

  Therefore, if convection in the first and second ventilation layers is suppressed by the polyester heat insulating material as described above, heat transfer to the structural housing by heat conduction is not performed, and therefore the heat shielding function of the heat shielding sheet. Can work effectively. On the other hand, the moisture collecting function of the polyester heat insulating material can surely discharge moisture accumulated in the first and second ventilation layers to the outside while suppressing convection. That is, according to the polyester heat insulating material used in the present invention, the moisture accumulated in the first and second ventilation layers and the first and second ventilation layers without impairing the moisture exhaust / heat exhaust function by the first and second ventilation layers. The heat shield function of the heat shield sheet while suppressing the convection in the first and second vent layers while ensuring that the heat trapped in the second vent layer can be discharged to the outside through these vent layers) Can work effectively. Moreover, in the above-described configuration, since the first and second ventilation layers are provided so as to sandwich the heat shielding sheet on both sides, dew condensation on the heat shielding sheet can be effectively suppressed.

  In the above configuration, “inside” means the housing side (inside the house), and “outside” means the outside (outside the house). Further, in the above configuration, the moisture-permeable waterproof sheet may be disposed on, for example, a column or an inter-column that constitutes the casing, or a plate-shaped load bearing surface material that is disposed outside the column or the inter-column that constitutes the casing. It may be disposed on the outer surface. Further, in the above configuration, the polyester heat insulating material is disposed in the corresponding ventilation layer at a predetermined distance (for example, 50 mm) from the external air flow inlet and / or the air outlet so that the contamination can be minimized. It is preferable to be provided.

  According to the present invention, in the outer wall ventilation layer construction method in which the heat shielding sheet is disposed, the heat insulation and heat insulation capable of reliably discharging the heat and moisture trapped in the ventilation layer while effectively operating the heat shielding function. A wall structure is obtained.

The schematic sectional drawing of the house which installed the heat insulation heat insulation wall structure concerning one embodiment of the present invention. Sectional drawing which follows the II-II line | wire of FIG. The partial cross-sectional perspective view which looked at the heat insulation heat insulation wall structure shown by FIG. 1 from the outer side. The principal part expanded sectional view of the heat insulation heat insulation wall structure shown by FIG.

Hereinafter, an embodiment of a heat insulating and heat insulating wall structure (inner heat insulating structure) according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the heat insulating and heat insulating wall structure 40 according to the present embodiment is constructed on the outer wall portion of a wooden house (a building having a wooden frame structure) 1.

  The wooden house 1 has a foundation 5 made of concrete and the like, and a base 5 made of timber and a large pull 5a for connecting the foundations 5 to each other. A plurality of pillars 7 extending in the direction are installed. An inter-column 7a is installed between the columns 7 and 7. A brace (not shown) is placed in the wall between the columns 7 and 7a or in the space between the inter-column 7a and the inter-column 7a. And the heat insulating material (inner heat insulating material) 35 is filled and arranged.

  Such a heat insulating material 35 can be made of a foamed plastic material used in a general inner heat insulating method, for example, an EPS (Expanded Poly-Styrene) board, a rigid urethane foam, glass wool or the like. . Moreover, about such a heat insulating material 35, since the heat insulation will fall if the thickness T is too thin, it is preferable to use the thing of the thickness T of about 50 mm-100 mm (for example, 100 mm). In addition, the mortar 4 is mounted on the outside of the foundation 3 with a heat insulating member 4a interposed.

  A large number of joists 9 are placed on the base 5 and the large pull 5a, a plywood 10 is laid thereon, and a floor finishing material (not shown) is pasted thereon, and the floor portion of the first floor is constructed. Is done. Moreover, between each joist 9 which is a floor part, the heat insulating material 11 is filled as needed. In addition, although not shown in the figure, in the two-story frame structure, like the floor part on the first floor, a number of floor beams are connected to the middle part of the pillar 7 (intermediate pillar 7a), and plywood and floor finish are provided on it. The material is affixed and the second floor part is constructed, and the ceiling base material and the ceiling finishing material are affixed thereunder, and the first floor ceiling part is constructed.

  A ceiling base material 12 is connected to the upper ends of the columns 7 and the inter-columns 7a, and a ceiling material 13 is attached to the lower surface of the ceiling base material 12 to construct the ceiling of the house. Further, an eaves girder 15 and a hut beam 16 are installed on the upper ends of the columns 7 and the inter-columns 7a, and a plate-like heat insulating material 17 is installed on the upper surface thereof as necessary.

  The roof 20 of the house has a large number of rafters 21 that are inclined and a field plywood 22 that is mounted on the surface of the rafters 21. An attic ventilation material 23 made of, for example, air-permeable vinyl chloride or plastic is attached to the back surface side of the plywood 22, and on the surface side, for example, air-permeable polypropylene or the like. The roof ventilation material 24 comprised by these is attached. And the waterproof sheet (for example, asphalt roofing) 24a is attached to the surface of the roof ventilation material 24, and the exterior material (roof material) 25 is attached to the surface, and the roof 20 is comprised. Although not shown, a heat shield (for example, a thickness of 8 mm) may be attached to the lower surface of the rafter 21.

  The attic ventilation material 23 is external (the top of the roof) as indicated by arrows A2 and A3 indicating moisture inside the house, moisture that has entered the first and second ventilation layers 60A and 60B, which will be described later, or heat. The roof ventilation member 24 has a function of scavenging toward the roof side as indicated by an arrow A4.

  The indoor surface of the wooden house 1 is configured by disposing a plate-shaped inner wall material (internal gypsum board) 30 (for example, about 12 mm thick) on the inner surface of the pillar 7 (intermediate pillar 7a). In this case, it is preferable to attach a moisture-proof and airtight sheet 31 to the outer (outer wall side) surface of the inner wall member 30, and an inner cloth (wallpaper) (not shown) is attached to the inner (inner side) surface of the inner wall member 30. Is affixed.

  On the outer surface of the column 7 (intermediate column 7a) constituting the frame structure with the roof 20 as described above, a heat insulating and heat insulating wall structure (inner heat insulating wall structure) 40 configured as follows is constructed. As shown in particular in an enlarged view in FIG. 4, the heat insulating and heat insulating wall structure 40 is, for example, disposed on the outer surface of the above-described heat insulating material 35 incorporated in the housing and the columns 7 and the inter-columns 7 a constituting the housing. A plate-like load bearing surface 46 having a thickness of 9 mm, a moisture-permeable waterproof sheet 47 applied over the entire surface outside the outdoor surface (outdoor), and a shield disposed over the entire surface of the moisture-permeable waterproof sheet 47. The thermal sheet 49, the first ventilation layer 60A secured as a space for ventilation between the moisture permeable waterproof sheet 47 and the thermal insulation sheet 49, and the thermal insulation sheet 49 and the outside thereof (disposed outside) A second ventilation layer 60 </ b> B secured as a space for ventilation is provided between the plate-like outer wall material 41 (exposed). That is, on both sides of the heat shield sheet 49, the first ventilation layer 60A is disposed on the indoor side, and the second ventilation layer 60B is disposed on the outdoor side.

  In particular, in the present embodiment, the first ventilation layer 60 </ b> A has the ventilation trunk edge 51 </ b> A interposed between the moisture permeable waterproof sheet 47 and the heat shield sheet 49 (the ventilation cylinder edge 51 </ b> A outside the moisture permeable waterproof sheet 47. Are arranged at a predetermined interval) to form between the ventilator edges 51A. The second ventilation layer 60B also has a ventilation drum edge 51B interposed between the heat shield sheet 49 and the outermost outer wall material 41 (the ventilation drum edge 51B has a predetermined interval outside the heat shield sheet 49). Are formed between these ventilator rims 51B.

  The outer wall material 41 is constituted by, for example, a ceramic industry, a metal system, a tile, or the like. Further, the moisture-permeable waterproof sheet 47 has a function of transmitting moisture from the inside to the outside (see arrow A5 in FIG. 4) and preventing water from entering from the outside to the inside (see arrow A6 in FIG. 4). For example, it can be constituted by Weathermate Plus manufactured by Dow Chemical Company. The heat shield sheet 49 is a sheet having a function of blocking heat (radiant heat) from the outside (see arrow A7 in FIG. 4), and is constituted by, for example, a heat shield sheet manufactured by a US heat shield material manufacturer. Is possible.

  Further, the first and second ventilation layers 60A and 60B are respectively disposed on the outer air flow inlets 60a1 and 60a2 provided near the foundation 3 and on the lower side, and the roof 20 described above assembled to the upper part of the housing. Upper outlets 60b1 and 60b2 communicating with the attic ventilation material 23. The first and second ventilation layers 60A and 60B have first and second ventilation layers on at least one of the outer airflow inlet 60a1 and 60a2 sides and the outlet 60b1 and 60b2 sides, respectively. Insulating materials 42A and 42B are provided to suppress convection in 60A and 60B and to discharge moisture in these ventilation layers 60A and 60B to the outside. These heat insulating materials 42A and 42B only need to be made of a material that insulates and exhausts heat and exhausts moisture. In particular, in the present embodiment, these heat insulating materials 42A and 42B are external as shown in the figure. It is disposed only on the airflow inlets 60a1 and 60a2 side.

  In the present embodiment, the heat insulating materials 42A and 42B are formed of a polyester material that has good drainage with excellent corrosion resistance (excellent in water permeability and moisture exhaustion), is easy to handle at low cost, and According to the heat insulating material (polyester heat insulating material), the inflow of outside air into the first and second ventilation layers 60A and 60B through the outer air flow inlets 60a1 and 60a2 (first and second ventilation layers 60A and 60B). Intrusion of hot air and cold air into the inside (see the arrow x in FIG. 4), and the air retention layers 50A and 50B that allow the air to stay are contained in the first and second ventilation layers 60A and 60B (particularly heat insulation). The first and second ventilation layers 60A and 60B above the materials 42A and 42B can be formed. That is, the function of suppressing convection in the first and second ventilation layers 60A and 60B is exhibited by forming the air retention layers 50A and 50B in the respective ventilation layers.

  In this case, as the heat insulating materials 42A and 42B, standard materials (also referred to as polyester filters made of a polyester material) can be used. For example, the height L1 of 300 mm and the corresponding ventilation layer 60A ( 60B) and thicknesses W1 and W2 corresponding to the thickness dimension. For example, when the thickness of the ventilation layer 60A (60B) is 18 mm, the thickness W1 (W2) of the corresponding heat insulating material 42A (42B) is 25.4 mm, and the heat insulating materials 42A and 42B correspond to that. The thickness of the ventilation layer 60A (60B) that is slightly thicker than the thickness of the ventilation layer 60A (60B) may be used, and moisture passing through the load bearing face 46 and moisture passing through the outer wall member 41 from the indoor side are effected through the outer air flow inlets 60a1 and 60a2. (See arrow A1 in FIGS. 1 and 4). Further, the heat insulating materials 42A and 42B are disposed in the ventilation layer 60A (60B) at a predetermined distance L2 (for example, 50 mm) from the external air flow inlets 60a1 and 60a2 so that the contamination can be minimized. It is preferable to do. In addition, about each thickness W1, W2 of the ventilation layer 60A (60B) and the heat insulating materials 42A, 42B, if it is too thick, the heat insulating property is lowered. A range of about 15 to 18 mm is preferable. Of course, the thicknesses W1 and W2 may not be the same, and the distance L2 may not be the same.

  The vertical height L1 of the heat insulating materials 42A and 42B only needs to be able to effectively prevent hot air and cold air from entering the ventilation layer 60A (60B) through the external air flow inlets 60a1 and 60a2. In order to obtain the effect, a height of 300 mm is desirable, but the height can be changed according to the thickness of the ventilation layer 60A (60B). For example, if the thickness of the ventilation layer 60A (60B) is thin, the height may be set low. Of course, the height L1 may not be the same in both the air-permeable layers.

  Further, the heat insulating materials 42A and 42B are interposed between the moisture permeable waterproof sheet 47 and the heat shield sheet 49 and between the heat shield sheet 47 and the outer wall material 41, and the first and second ventilation layers 60A and 60B. It preferably functions as a spacer for securing a space inside. Thus, if it can function as a spacer, a ventilation space is secured in cooperation with the ventilation cylinder edges 51A and 51B or without the ventilation cylinder edges 51A and 51B interposed (first and second ventilation layers 60A and 60B). Can maintain sufficient thickness) and can prevent sufficient moisture exhaust / heat exhaust function, prevent the heat shield sheet 49 from coming into close contact with the moisture permeable waterproof sheet 47, and the outer wall material 41 on the heat shield sheet 49. It is also possible not to adhere. Alternatively, for the heat insulating materials 42A and 42B, in addition to being interposed between the heat shield sheet 49 and the moisture permeable waterproof sheet 47 and between the heat shield sheet 49 and the outer wall member 41 as a single structure, A structure in which the holding member is held by various holding members such as a (frame) or an aggregate and the holding member is interposed between the two may be used.

  In addition, the heat insulation heat insulation wall structure 40 comprised as mentioned above can be arrange | positioned over the whole surface of area | regions other than opening parts 68 (refer FIG. 2), such as a window, in an outer wall part.

  As described above, according to the heat insulating and heat insulating wall structure 40 (inner heat insulating wall structure having a heat insulating material inside the moisture permeable waterproof sheet 47) according to the present embodiment, the first and second ventilation layers 60A and 60B. While the heat insulating materials 42A and 42B disposed inside can suppress convection in the first and second ventilation layers 60A and 60B, moisture accumulated in the first and second ventilation layers 60A and 60B ( The moisture transmitted through the moisture permeable waterproof sheet 47 from the inside and the moisture transmitted through the outer wall can be effectively discharged to the outside. In particular, the heat insulating materials 42A and 42B of the present embodiment are formed from a polyester material that is excellent in corrosion resistance and has good drainage, and is disposed on the side of the external air flow inlets 60a1 and 60a2 from which external air easily flows. Air retention layers 50A and 50B that allow air to stay by suppressing inflow of outside air into the ventilation layers 60A and 60B through the air flow inlets 60a1 and 60a2 (intrusion of hot air and cold air into the ventilation layers 60A and 60B). Can be formed in the ventilation layers 60A and 60B above the heat insulating materials 42A and 42B, and convection in the ventilation layers 60A and 60B can be effectively suppressed (air in the ventilation layers 60A and 60B). By forming the staying layers 50A and 50B, it is possible to effectively suppress the occurrence of convection in the ventilation layers 60A and 60B).

In addition, if the convection in the ventilation layers 60A and 60B can be suppressed by the heat insulating materials 42A and 42B in this way, heat transfer to the structural housing due to heat conduction is not performed, and therefore the heat shield function of the heat shield sheet 49 is effective. On the other hand, the moisture collecting function of the heat insulating materials 42A and 42B can surely discharge the moisture accumulated in the ventilation layers 60A and 60B to the outside through the external air flow inlets 60a1 and 60a2 while suppressing convection. . That is, according to the heat insulating materials 42A and 42B of the present embodiment, convection in the first and second ventilation layers 60A and 60B without impairing the moisture removal function of the first and second ventilation layers 60A and 60B. The heat shield function of the heat shield sheet 49 can be made to work effectively while suppressing the above.
Moreover, in the said structure, since 1st and 2nd ventilation layer 60A, 60B is provided so that this may be pinched | interposed into the both sides of the thermal insulation sheet 49, dew condensation can be suppressed effectively.

  In the present embodiment, moisture accumulated in the ventilation layers 60A and 60B is discharged outside from the external air flow inlets 60a1 and 60a2 through the heat insulating materials 42A and 42B (see arrow A1 in FIGS. 1 and 4). It is also discharged from the attic ventilation material 23 through the outlets 60b1 and 60b2 (see arrows A2 and A3 in FIGS. 1 and 4). Further, as described above, heat accumulated in the ventilation layers 60A and 60B is also discharged from the outflow ports 60b1 and 60b2 through the ventilation material 23. In this way, if the outlets 60b1 and 60b2 of the ventilation layers 60A and 60B are communicated with the ventilation material 23 provided on the roof 20 assembled to the upper part of the housing, moisture and / or in the ventilation layers 60A and 60B can be transmitted through the ventilation material 23. Alternatively, heat can be discharged to the outside, and the exhaust heat / humidity function in the ventilation layers 60A and 60B can be remarkably improved together with the heat insulating materials 42A and 42B.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to above-described embodiment, It can change variously. For example, in the above-described embodiment, in addition to the heat insulating material 35, a heat insulating material may be further disposed outside the ventilation layers 60A and 60B. That is, the present invention can be applied to a composite structure in which an outer heat insulating structure is combined with an inner heat insulating structure. Further, in the above-described embodiment, the heat insulating materials 42A and 42B are disposed only on the outer airflow inlets 60a1 and 60a2 side of the ventilation layers 60A and 60B, but the heat insulating materials 42A and 42B are the outlets of the ventilation layers 60A and 60B. The heat insulating materials 42A and 42B may be disposed only on the 60b1 and 60b2 sides, or on both the external airflow inlets 60a1 and 60a2 side and the outlets 60b1 and 60b2 side. In the above-described embodiment, the heat insulating materials 42A and 42B are formed of a polyester material. However, if the moisture in the air-permeable layers 60A and 60B can be discharged to the outside by suppressing the convection in the air-permeable layers 60A and 60B, the heat insulating materials 42A and 42B are insulated. The material of the materials 42A and 42B is not particularly limited, and may be configured as a sponge-like spacer, for example. Further, the first ventilation layer 60A and the second ventilation layer 60B may have the same thickness or the like.

  Moreover, although the heat-insulating and heat insulating wall structure of the above-described embodiment is applied to the outer wall portion of the wooden frame structure of the wooden house, the present invention can be applied to other buildings such as a wooden framework method (2 × 4 method). It can be applied to other buildings.

23 Attic ventilation material (ventilation material)
35 Heat Insulating Material 40 Heat Insulating Heat Insulating Wall Structure 41 Outer Wall Material 42A, 42B Heat Insulating Material (Polyester Insulating Material)
47 Moisture permeable waterproof sheet 49 Heat shield sheet 50A, 50B Air retention layer 60A First ventilation layer 60B Second ventilation layer 60a1, 60a2 Outer airflow inlet 60b1, 60b2 Outlet

Claims (4)

A heat insulating material incorporated into the housing;
A moisture permeable waterproof sheet that is disposed outside the heat insulating material, transmits moisture from the inside to the outside, and prevents water from entering from the outside to the inside;
A heat shield sheet that is disposed outside the moisture permeable waterproof sheet and blocks heat from the outside;
A first ventilation layer having an outer airflow inlet and an outlet, and secured as a space for ventilation between the heat shield sheet and the moisture permeable waterproof sheet;
A second ventilation layer having an outer airflow inlet and an outlet, and secured as a space for ventilation between the heat shield sheet and the outer wall material arranged outside thereof;
With
In the first and second ventilation layers, air that allows at least one of the external air flow inlet side and the outflow port side to retain air without restraining inflow of external air and causing convection. A heat insulating and heat insulating wall structure characterized in that a polyester heat insulating material is provided to form a staying layer so that moisture in the ventilation layer can be discharged to the outside.   2. The heat insulating and heat insulating wall structure according to claim 1, wherein the polyester heat insulating material has a height of 300 mm and a thickness corresponding to a thickness dimension of the corresponding ventilation layer.   The heat insulating and heat insulating wall structure according to claim 1, wherein the polyester heat insulating material functions as a spacer for securing a space in the ventilation layer.   The outlets of the first and second ventilation layers communicate with a ventilation material provided on a roof assembled on an upper portion of the housing, and moisture and / or heat in the ventilation layer are transmitted to the outside through the ventilation material. The heat insulating and heat insulating wall structure according to any one of claims 1 to 3, wherein the heat insulating and heat insulating wall structure is discharged.

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