Heat-insulating structure and building

A multi-layered insulation structure with airtight and moisture barrier layers addresses condensation issues by blocking moisture ingress and enhancing insulation, maintaining humidity and thermal efficiency.

JP2025167359APending Publication Date: 2025-11-07ASAHI KASEI HOMES CORP +1
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Patent Information

Application Number
JP2024071891
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-25
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing buildings face issues with condensation due to outdoor moisture accumulating in insulation layers and metal parts, particularly when the airtight sheet is cooled by indoor air conditioning, leading to condensation on the outdoor side.

Method used

A multi-layered insulation structure comprising airtight and moisture barrier layers on the indoor side of insulation layers, with airtight layers connecting to form a continuous airtight line and moisture barrier layers forming a continuous moisture barrier line, preventing moisture ingress and reducing heat transfer.

Benefits of technology

The solution effectively reduces condensation inside the building by blocking moisture and improving insulation performance, ensuring sufficient humidity and thermal efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a heat-insulating structure capable of reducing condensation inside.SOLUTION: A heat-insulating structure according to the present invention comprises a first roof heat-insulating layer, a roof airtight layer provided on the indoor side of the first roof heat-insulating layer, a second roof heat-insulating layer provided on the indoor side of the roof airtight layer, and a roof moisture-proof layer provided on the indoor side of the second roof heat-insulating layer.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to thermally insulated structures and buildings. [Background technology]

[0002] For example, as described in Patent Document 1, a building is known in which an airtight sheet is arranged on the indoor side of an inner heat insulating layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6542740 specification Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a building such as that described in Patent Document 1, outdoor moisture may flow into and accumulate in the inner insulation layer, metal parts connecting columns and beams, or the building frame, causing condensation. Particularly in summer, the airtight sheet may be cooled by indoor air conditioning, causing condensation on the outdoor side of the airtight sheet.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a heat insulating structure that can reduce condensation inside. [Means for solving the problem]

[0006] The heat insulating structure according to a first aspect of the present invention comprises: (1) A first roof insulation layer; a roof airtight layer disposed on the indoor side of the first roof insulation layer; A second roof insulation layer disposed on the indoor side of the roof airtight layer; a roof moisture barrier layer disposed on the indoor side of the second roof insulation layer; Equipped with.

[0007] A heat insulating structure according to a second aspect of the present invention comprises: (2) A first exterior wall insulation layer; an exterior wall airtight layer disposed on the indoor side of the first exterior wall thermal insulation layer; A second exterior wall insulation layer arranged on the indoor side of the exterior wall airtight layer; an exterior wall moisture barrier layer disposed on the indoor side of the second exterior wall insulation layer; Equipped with.

[0008] The heat insulating structure according to one embodiment of the present invention comprises: (3) A first floor insulation layer; A floor airtight layer and a floor moisture barrier layer arranged on the indoor side of the first floor insulation layer; A second floor insulation layer disposed on the indoor side of the floor airtight layer and the floor moisture barrier layer; Further comprising: The heat insulating structure according to (1) or (2) above.

[0009] A building according to a third aspect of the present invention comprises: (4) A first roof insulation layer; a roof airtight layer disposed on the indoor side of the first roof insulation layer; A second roof insulation layer disposed on the indoor side of the roof airtight layer; a roof moisture barrier layer disposed on the indoor side of the second roof insulation layer; Including, Roof insulation structure, A first exterior wall insulation layer; an exterior wall airtight layer disposed on the indoor side of the first exterior wall thermal insulation layer; A second exterior wall insulation layer arranged on the indoor side of the exterior wall airtight layer; an exterior wall moisture barrier layer disposed on the indoor side of the second exterior wall insulation layer; Including, Insulation structure of the exterior wall, A first floor insulation layer; A floor airtight layer and a floor moisture barrier layer arranged on the indoor side of the first floor insulation layer; A second floor insulation layer disposed on the indoor side of the floor airtight layer and the floor moisture barrier layer; Including, Floor insulation structure, Equipped with the roof airtight layer and the exterior wall airtight layer are in contact with each other, and the exterior wall airtight layer and the floor airtight layer are in contact with each other; The roof moisture barrier layer and the exterior wall moisture barrier layer are in contact with each other, and the exterior wall moisture barrier layer and the floor moisture barrier layer are in contact with each other. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a heat insulating structure that can reduce condensation inside. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view showing a building according to an embodiment of the present invention. [Figure 2] 1 is a cross-sectional view showing a thermal insulation structure for a roof and an exterior wall according to an embodiment of the present invention. [Figure 3] 1 is a cross-sectional view showing a floor insulation structure according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of a thermal insulation structure and a building according to the present invention will be described by way of example with reference to the drawings. In the drawings, the same reference numerals are used to designate common components.

[0013] FIG. 1 is a cross-sectional view showing a building 100 as an embodiment of the building according to the present invention.

[0014] First, an outline of a building 100 including thermal insulation structures for the roof, exterior walls, and floors will be described. The building is, for example, a structure of one story or more, and is composed of a reinforced concrete foundation 1 and an upper structure 2 having a framework made up of framework members such as columns and beams and fixed to the foundation. The framework members that make up the framework may be standardized in advance, or may be manufactured in a factory and then transported to the construction site and assembled.

[0015] The foundation 1 is located below the superstructure 2 and supports the superstructure 2. The foundation 1 is not particularly limited, but may be, for example, a mat foundation. As another example, the foundation may be a continuous footing with a T-shaped cross section that includes a footing portion and a rising portion serving as a foundation beam. The foundation 1 may also be provided with a column base fixing portion for fixing the column base of a column of a framework structure using an exposed fixed column base construction method. Anchor bolts used to fix the column base may protrude vertically upward from the foundation 1.

[0016] In addition to the function of distributing and transmitting the vertical load from the frame structure of the upper structure 2 to the ground, the foundation 1 also has the function of directly or indirectly supporting various components that make up the outer wall of the upper structure 2, various components that make up the floor of the upper structure 2, and various components that make up the roof 10 of the upper structure 2.

[0017] The framework of the upper structure 2 is composed of multiple columns and multiple beams. Exterior materials 23 that form the exterior walls 20 are arranged around the periphery of the framework. Floor board members that form the floor are arranged between the layers of the framework. Furthermore, roof materials 15 that form the roof 10 are arranged on top of the framework.

[0018] 2, roof 10 may include a truss structure, roof underlayment (sheathing boards) 16 attached to the truss structure, a waterproofing member laid on the roof underlayment 16, and roofing material 15 installed on the waterproofing member to form a sloped roof surface exposed to the outside space. Multiple roof surfaces of roof 10 may form a ridge or corner ridge as the peak.

[0019] Referring to Figure 2, the roof 10 includes a first insulating roof layer (external roof insulating layer) 11. In other words, the building 100 may be provided with external insulation using the first insulating roof layer 11. The first insulating roof layer 11 may be arranged so as to cover the outside of the truss. The first insulating roof layer 11 may be arranged between a plurality of rafters. The first insulating roof layer 11 may include an extension portion 11e that extends so as to cover the upper surface 21u of the exterior wall external insulating material 21 described below.

[0020] The roof 10 may include a second insulating roof layer (intra-roof insulating layer) 12 disposed on the truss. In other words, the roof 10 may be provided with infill insulation by the second insulating roof layer 12.

[0021] The first insulating roof layer 11 or the second insulating roof layer 12 may be in the form of a plate. The first insulating roof layer 11 or the second insulating roof layer 12 may be composed of a single continuous insulating member. The first insulating roof layer 11 or the second insulating roof layer 12 may be a foamed plastic insulating material. Foamed plastic insulating materials exhibit high insulating performance. Examples of foamed plastic insulating materials that may be used include phenolic foam and polyethylene foam.

[0022] An airtight roof layer 18 is disposed on the indoor side of the first insulating roof layer 11 and on the outdoor side of the second insulating roof layer 12. The airtight roof layer 18 may be composed of a structural facing 18s and an airtight tape. The airtight roof layer 18 prevents gas from passing through. The airtight roof layer 18 may seal the indoor space.

[0023] The airtight roof layer 18 may block moisture to some extent. This configuration can at least partially block moisture from entering the second insulating roof layer 12, the metal parts connecting the columns and beams, and the framework including the structural surface materials 18s when outdoor humidity is high, such as in summer. This can prevent moisture from accumulating in the first insulating roof layer 11 and causing condensation on the first insulating roof layer 11. The airtight roof layer 18 also reduces heat transfer by preventing air circulation. This can improve the insulation performance of the building 100.

[0024] The structural surface material 18s may be, for example, structural plywood. The structural surface material may be, for example, a wood-based board such as laminated lumber, in which the grain directions of the laminated boards are parallel, or cross-laminated timber (CLT, short for Cross Laminated Timber), in which the grain directions of the laminated boards are alternately laminated so that they are perpendicular to each other. The structural surface material may be, for example, an ALC panel.

[0025] The airtight tape may be applied across adjacent structural panels 18s. The airtight tape may cover the joints between adjacent structural panels 18s from the exterior side. Because the structural panels 18s are hard and adjacent structural panels 18s generally form flat surfaces, it is easy to apply the airtight tape.

[0026] A roof underlayment 16 may cover the first insulating roof layer 11. The roof underlayment 16 may secure the roofing material 15.

[0027] A ventilation layer 17 may be formed between the extension portion 11e of the first insulating roof layer 11 and the roof underlayment 16. The roof 10 may further include a spacer 14 disposed between the extension portion 11e of the first insulating roof layer 11 and the roof underlayment 16. The spacer 14 may prevent the extension portion 11e from moving toward the roof underlayment 16. Thus, the spacer 14 may ensure ventilation between the extension portion 11e and the roof underlayment 16. The spacer 14 may have a rectangular parallelepiped shape. The spacer 14 may be fastened to the rafters with fastening members such as screws. The spacer 14 may be rigid. For example, the spacer 14 may be made of wood.

[0028] A sheet-like member such as sheet-like asphalt roofing can be used as the waterproofing member for the roof 10. The waterproofing member may be fastened to the base member with fastening members such as screws.

[0029] The roofing material 15 for the roof 10 can be a cement-based roofing material such as clay roof tiles or artificial slate, natural slate, or metal roofing material. Multiple roofing materials 15 may be laid on a waterproofing member. The multiple roofing materials 15 may be configured so that adjacent roofing materials 15 can be engaged with each other to position them relative to each other, or may be configured so that they can be fastened to the base material or truss with fastening members such as screws.

[0030] The roof 10 further includes a roof moisture barrier layer 19 disposed on the indoor side of the second insulating roof layer 12. The roof moisture barrier layer 19 may be formed of a moisture barrier sheet that blocks moisture such as water vapor. This configuration prevents moisture from migrating from the indoors to the roof 10, for example, in winter, ensuring sufficient humidity indoors.

[0031] The roof vapor barrier layer 19 may be made of a variable vapor-permeable airtight sheet. The variable vapor-permeable airtight sheet changes its vapor transmission resistance depending on the conditions. This configuration allows moisture from the roof 10 to flow indoors to some extent, for example, in the summer, preventing condensation inside the roof 10 and ensuring sufficient humidity indoors. An example of a variable vapor-permeable airtight sheet is VCL Smart (registered trademark) manufactured by DuPont-Asahi Flashspan Products Co., Ltd.

[0032] The exterior wall 20 includes a first heat insulating exterior wall layer (exterior wall external heat insulating layer) 21, an exterior base material 22, and an exterior material .

[0033] The first insulating exterior wall layer 21 may be disposed on the exterior side of a beam or girder, as indicated by the reference numeral 26. The first insulating exterior wall layer 21 may be disposed on the exterior side of a column. The first insulating exterior wall layer 21 may be connected along the inner surface of the outer layer formed by the exterior material 23, thereby forming an insulating layer for the outer perimeter wall. In other words, the exterior wall 20 may be provided with external insulation by the first insulating exterior wall layer 21.

[0034] The first insulating roof layer 11 may be in contact with the first insulating exterior wall layer 21. This configuration can reduce thermal bridges near the eaves beams. The first insulating roof layer 11 may be in contact with the entire upper surface 21u of the first insulating exterior wall layer 21. The first insulating roof layer 11 and the first insulating exterior wall layer 21 may be separate insulating materials. The first insulating roof layer 11 and the first insulating exterior wall layer 21 may also be integrated. In a configuration in which the spacer 14 is arranged between the extension portion 11e of the first insulating roof layer 11 and the roof underlayment 16, the first insulating roof layer 11 can be in more reliable contact with the first insulating exterior wall layer 21.

[0035] The first insulating exterior wall layer 21 may be plate-shaped. The first insulating exterior wall layer 21 may include different insulating materials above and below the exterior base material 22. The portion of the first insulating exterior wall layer 21 sandwiched between the first insulating roof layer 11 and the exterior base material 22 may include multiple insulating materials. More specifically, this portion may include a rectangular parallelepiped first insulating material adjacent to the top surface of the exterior base material 22 and a right-angled triangular second insulating material sandwiched between the top surface of the first insulating material and the first insulating roof layer 11. As another example, the first insulating exterior wall layer 21 may be composed of a single continuous insulating member. The first insulating exterior wall layer 21 may be a foamed plastic insulating material. Foamed plastic insulating materials exhibit high insulating performance. Examples of foamed plastic insulating materials include phenolic foam and polyethylene foam.

[0036] The exterior wall 20 further includes a second insulating exterior wall layer (exterior wall interior insulating material) 27. In other words, the exterior wall 20 is provided with filled insulation by the second insulating exterior wall layer 27. The second insulating exterior wall layer 27 may be disposed between structural members such as pillars of the exterior wall 20. The second insulating exterior wall layer 27 may be a fiber-based insulating material. Examples of fiber-based insulating materials include inorganic fiber-based insulating materials such as glass wool and rock wool, organic fiber-based insulating materials such as polyester wool, and wood fiber-based insulating materials such as cellulose fiber and wood fiber.

[0037] An exterior wall airtight layer 24 is disposed on the indoor side of the first insulating exterior wall layer 21 and on the outdoor side of the second insulating exterior wall layer 27. The exterior wall airtight layer 24 may be composed of a structural facing 24s and an airtight tape. The exterior wall airtight layer 24 prevents the flow of gas. The exterior wall airtight layer 24 may seal the indoor space.

[0038] The exterior wall airtight layer 24 may block moisture to a certain extent. This configuration can prevent moisture from flowing into the second insulating exterior wall layer 21, the metal parts connecting the columns and beams, and the framework including the structural surface materials 24s when outdoor humidity is high, such as in summer. This can prevent moisture from accumulating in the second insulating exterior wall layer 27 and the like, and condensation on the first insulating exterior wall layer 21 and the like. The exterior wall airtight layer 24 also reduces heat transfer by preventing air from flowing through.

[0039] The structural face material 24s may be, for example, structural plywood. The structural face material may be, for example, MOISS (registered trademark) manufactured by Sojitz Building Materials Corporation. The structural face material may be, for example, a wood-based board such as laminated timber, in which the grain directions of the laminated boards are parallel, or cross-laminated timber (CLT, short for Cross Laminated Timber), in which the grain directions of the laminated boards are alternately laminated so that they are perpendicular to each other. The structural face material may be, for example, an ALC panel.

[0040] The airtight tape may be applied across adjacent structural facings 24s. The airtight tape may cover the joints between adjacent structural facings 24s from the exterior side. Because the structural facings 24s are hard and adjacent structural facings 24s generally form flat surfaces, it is easy to apply the airtight tape.

[0041] The exterior base material 22 is disposed on the exterior side of the beams or girders 26. The exterior base material 22 may be disposed so that at least a portion thereof is at a different position from the beams or girders 26 in the height direction. In other words, at least a portion of the exterior base material 22 may be offset from the beams or girders 26 in the height direction. This arrangement may prevent heat transfer from the exterior side to the interior side, particularly between the exterior base material 22 and the beams or girders 26, by a highly thermally conductive member in the exterior wall 20. Therefore, the formation of a thermal bridge in the exterior wall 20 may be prevented. The exterior base material 22 may be disposed so as not to overlap, preferably not to overlap at all, the beams or girders 26 in the height direction. As shown in FIG. 1 , the height of the upper surface of the exterior base material 22 may be the same as the height of the lower surface of the beams or girders 26.

[0042] In a configuration in which there are multiple exterior base materials 22, at least a portion, and preferably all, of at least one exterior base material 22 may be positioned so as to be at a different position in the height direction from the beams or girders 26.

[0043] The exterior base material 22 may extend horizontally between the pillars. The exterior base material 22 may be columnar. The exterior base material 22 is not particularly limited, and examples thereof include structural frameworks or load-bearing surface materials such as pillars and studs in wooden buildings and walls in reinforced concrete structures.

[0044] The exterior material 23 is disposed on the outdoor side of the first insulating exterior wall layer 21 and the exterior base material 22. The exterior material 23 is fixed directly or indirectly (via furring strips 25) to the exterior base material 22. The exterior material 23 may be a panel of lightweight foamed concrete (hereinafter referred to as "ALC." "ALC" is an abbreviation for "autoclaved lightweight concrete"). The exterior material 23 may also be fire-resistant metal or ceramic siding, extruded cement board, wood panel material, etc. The exterior material 23 may be fixed to the exterior base material 22 with screws or the like. Furring strips 25 may be provided between the exterior material 23 and the exterior base material 22. The outer layer of the exterior wall 20 may be formed by connecting multiple exterior materials 23.

[0045] The exterior wall 20 further includes an exterior wall moisture barrier layer 28 disposed on the indoor side of the second exterior wall insulation layer 22. The exterior wall moisture barrier layer 28 may be formed of a moisture barrier sheet that blocks moisture such as water vapor. This configuration prevents moisture from moving from the indoors to the exterior wall 20, for example, in winter, ensuring sufficient humidity indoors.

[0046] The exterior wall moisture barrier layer 28 may be made of a variable moisture-permeable airtight sheet. The variable moisture-permeable airtight sheet changes its moisture permeation resistance depending on the conditions. This configuration allows moisture from the exterior wall 20 to flow indoors to some extent, for example, in the summer, preventing condensation inside the exterior wall 20 and ensuring sufficient humidity indoors. An example of a variable moisture-permeable airtight sheet is VCL Smart (registered trademark) manufactured by DuPont-Asahi Flashspan Products Co., Ltd.

[0047] The exterior wall 20 may further include an interior material 29. The interior material 29 may be composed of, for example, a plasterboard and a finishing material such as wall paper attached to the surface of the plasterboard. The interior material 29 may be connected to the inside of the second insulating exterior wall layer 27 to form an inner layer of the exterior wall 20.

[0048] 3, the floor 30 may be composed of a first floor insulation layer (external floor insulation layer) 31, a floor moisture barrier layer 32, an airtight floor layer 33, and a second floor insulation layer (internal floor insulation layer) 34. The floor 30 may further include a structural surface material 37.

[0049] The floor 30 may be provided with fill insulation by a first floor insulation layer 31. The first floor insulation layer 31 may be in the form of a plate. The first floor insulation layer 31 may include different insulation materials on each side of the wood section 36. The first floor insulation layer 31 may be made up of a single continuous insulation element.

[0050] The floor 30 is provided with additional insulation by a second floor insulation layer 34. The second insulation exterior wall layer 34 may be placed between structural members such as joists of the floor 30. The second floor insulation layer 34 may be placed on the indoor side of the wooden parts 36. With this placement, the highly thermally conductive members in the floor 30 can prevent heat from being transferred from the outdoor side to the indoor side, particularly between the wooden parts 36 and the floor interior material 35. Therefore, the formation of thermal bridges in the floor 30 can be prevented.

[0051] The first floor insulation layer 31 and / or the second floor insulation layer 34 may be a foamed plastic insulation material. Foamed plastic insulation materials exhibit high insulating performance. Examples of foamed plastic insulation materials that may be used include phenol foam and polyethylene foam.

[0052] The floor moisture barrier layer 32 may be placed on the indoor side of the first floor insulation layer 31. The floor moisture barrier layer 32 may be composed of a moisture barrier sheet that blocks moisture such as water vapor. This configuration can prevent moisture from flowing into the structural surface material 37 located directly above the floor airtight layer 33 when the outdoor humidity is high, such as in summer. This can prevent the structural surface material 37 from corroding due to moisture. Furthermore, for example, in winter, moisture is prevented from moving from indoors to the floor 30, ensuring sufficient humidity indoors.

[0053] The floor moisture barrier layer 32 may be made of a variable moisture-permeable airtight sheet. The variable moisture-permeable airtight sheet changes its moisture permeation resistance depending on the conditions. This configuration allows moisture from the floor 30 to flow indoors to some extent, for example in the summer, preventing condensation within the floor 30 and ensuring sufficient humidity indoors. An example of a variable moisture-permeable airtight sheet is VCL Smart (registered trademark) manufactured by DuPont-Asahi Flashspan Products Co., Ltd.

[0054] The floor airtight layer 33 may prevent the flow of gas. The floor airtight layer 33 may be arranged on the indoor side of the first floor insulation layer 31. Referring to Fig. 3, the floor airtight layer 33 may be composed of a floor moisture barrier layer 32 and an airtight tape. That is, the floor airtight layer 33 and the floor moisture barrier layer 32 may be integrated.

[0055] An airtight line (airtight layer) may be formed by covering the joints of adjacent floor moisture barrier layers 32 from the outdoor side with airtight tape. The airtight tape may be applied across adjacent floor moisture barrier layers 32. Adjacent floor moisture barrier layers 32 generally form flat surfaces, making it easy to apply the airtight tape. In a configuration in which there is no floor moisture barrier layer 32 directly above the first floor insulation layer 31, an airtight line may be formed by covering the joints between the wood part 36 and the first floor insulation layer 31 from the outdoor side with airtight tape. In this configuration, a floor moisture barrier layer may be provided on the indoor side of the airtight line.

[0056] As another example, the floor airtight layer 33 may be disposed on the indoor side of the floor moisture barrier layer 32, or the floor airtight layer 33 may be disposed on the outdoor side of the floor moisture barrier layer 32. The floor airtight layer 33 may seal the indoor space.

[0057] The floor airtight layer 33 may block moisture to some extent. This configuration can prevent moisture from flowing into the second floor insulation layer 34 and the framework including the structural surface material 37 when outdoor humidity is high, such as in summer. The floor airtight layer 33 also reduces heat transfer by preventing air flow.

[0058] A structural face material 37 may be disposed on the indoor side of the floor moisture barrier layer 32 and floor airtight layer 33 and on the outdoor side of the second floor insulation layer 34, more specifically, directly above the floor airtight layer 33. The structural face material 37 may be, for example, structural plywood. The structural face material may be, for example, a wood-based board such as laminated timber in which the grain directions of the laminated boards are parallel, or cross-laminated timber (CLT, short for Cross Laminated Timber), in which the boards are laminated alternately so that the grain directions of the laminated boards are perpendicular. The structural face material may be, for example, an ALC panel.

[0059] The floor 30 may further include a floor interior material 35, such as flooring, on the indoor side of the second floor insulation layer 34. The floor interior material 35 may form the floor surface. The floor 30 may further include a structural surface material 38 on the outdoor side of the floor interior material 35. The structural surface material 38 may have a structure similar to that of the structural surface material 37.

[0060] The arrangement of the roof 10, exterior walls 20, and floors 30 of a building 100 will be described with reference to FIG.

[0061] The roof airtight layer 18 may be in contact with the exterior wall airtight layer 24. The exterior wall airtight layer 24 may be in contact with the floor airtight layer 33. In other words, the roof airtight layer 18, the exterior wall airtight layer 24, and the floor airtight layer 33 may be connected together to form an airtight line. This configuration can improve the airtightness of the building 100. Furthermore, condensation can be prevented from occurring on the roof 10, the exterior wall 20, or the floor 30.

[0062] The roof moisture barrier layer 19 may be in contact with the exterior wall moisture barrier layer 28. The exterior wall moisture barrier layer 28 may be in contact with the floor moisture barrier layer 32. In other words, the roof moisture barrier layer 19, the exterior wall moisture barrier layer 28, and the floor moisture barrier layer 32 may be connected together to form a moisture barrier line. This configuration can prevent moisture from moving out of the interior of the building, for example, in winter, ensuring sufficient humidity inside the building.

[0063] The first roof insulation layer 11 and the first exterior wall insulation layer 21 may be close to each other. The first exterior wall insulation layer 21 and the first floor insulation layer 31 may be close to each other. The second roof insulation layer 12 and the second exterior wall insulation layer 27 may be close to each other. The second exterior wall insulation layer 27 and the second floor insulation layer 34 may be close to each other. In this specification, the term "close to" insulation layers refers not only to insulation layers being in contact with each other, but also to the gaps between insulation layers being so small that they can be ignored from the perspective of the thermal insulation performance of the building 100. In other words, the first roof insulation layer 11, the first exterior wall insulation layer 21, and the first floor insulation layer 31 may form a first insulation line. The second roof insulation layer 12, the second exterior wall insulation layer 27, and the second floor insulation layer 34 may form a second insulation line. These configurations can improve the thermal insulation performance of the building 100. [Explanation of symbols]

[0064] 100: Building 1: Basics 2:Superstructure 10: Roof 11: First roof insulation layer 11e: Extension part 12: Second roof insulation layer 14: Spacer 15: Roofing materials 16: Roof underlayment 17: Ventilation layer 18: Roof airtight layer 18s: Structural surface material 19: Roof moisture barrier 20: Exterior wall 21: First exterior wall insulation 21u:Top surface 22: Exterior base material 23: Exterior material 24: Exterior wall airtight layer 24s: Structural surface material 25: Ventilation layer 26: Beam or girder 27: Second exterior wall insulation 28: Exterior wall moisture barrier 29: Interior materials 30:Floor 31: First floor insulation 32: Floor moisture barrier 33: Floor airtight layer 34: Second floor insulation 35: Floor interior material 36: Wood 37,38: Structural surface material

Claims

1. a first roof insulation layer; a roof airtight layer disposed on the indoor side of the first roof insulation layer; a second roof insulation layer disposed on the indoor side of the roof airtight layer; a roof moisture barrier layer disposed on the indoor side of the second roof insulation layer; Equipped with Insulated structure.

2. A first exterior wall insulation layer; an exterior wall airtight layer disposed on the indoor side of the first exterior wall thermal insulation layer; A second exterior wall insulation layer disposed on the indoor side of the exterior wall airtight layer; an exterior wall moisture barrier layer disposed on the indoor side of the second exterior wall thermal insulation layer; Equipped with Insulated structure.

3. A first floor insulation layer; A floor airtight layer and a floor moisture barrier layer arranged on the indoor side of the first floor insulation layer; A second floor insulation layer disposed on the indoor side of the floor airtight layer and the floor moisture barrier layer; Further comprising: The heat insulating structure according to claim 1 or 2.

4. a first roof insulation layer; a roof airtight layer disposed on the indoor side of the first roof insulation layer; a second roof insulation layer disposed on the indoor side of the roof airtight layer; a roof moisture barrier layer disposed on the indoor side of the second roof insulation layer; Including, Roof insulation structure, A first exterior wall insulation layer; an exterior wall airtight layer disposed on the indoor side of the first exterior wall thermal insulation layer; A second exterior wall insulation layer disposed on the indoor side of the exterior wall airtight layer; an exterior wall moisture barrier layer disposed on the indoor side of the second exterior wall thermal insulation layer; Including, Insulation structure of exterior walls, A first floor insulation layer; A floor airtight layer and a floor moisture barrier layer arranged on the indoor side of the first floor insulation layer; A second floor insulation layer disposed indoors on the floor airtight layer and the floor moisture barrier layer; Including, Floor insulation structure, Equipped with the roof airtight layer and the exterior wall airtight layer are in contact with each other, and the exterior wall airtight layer and the floor airtight layer are in contact with each other; The roof moisture barrier layer and the exterior wall moisture barrier layer are in contact with each other, and the exterior wall moisture barrier layer and the floor moisture barrier layer are in contact with each other. building.

Citation Information

Patent Citations

  • Thermal insulation, breathability, and earthquake-resistant exterior cladding for wooden buildings

    JP6542740B2