Construction suitable for ultra-low energy consumption fabricated building outer wall deformation joint

Abstract

This invention relates to the field of building insulation, and more particularly to a structure suitable for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings. It comprises three parts: a precast concrete sandwich wall panel, a cast-in-place structural section, and the expansion joint structure. The precast concrete sandwich wall panel consists of a precast concrete inner leaf panel, a core insulation panel, and a precast concrete outer leaf panel. The cast-in-place concrete shear wall consists of two symmetrical parts. The core insulation panel is located on the outside of the cast-in-place concrete shear wall, and thermal break strips are located between the symmetrical cast-in-place concrete shear walls. The thermal break insulation for the expansion joint is located between the cast-in-place concrete shear walls, and a galvanized steel plate is located on the outside of the thermal break insulation for the expansion joint. Installation screws are located on both sides of the galvanized steel plate and connect it to the precast concrete outer leaf panel. A finished galvanized steel plate cover plate is located on the outside of the galvanized steel plate cover plate. This technical solution significantly improves the insulation effect and durability at the wall expansion joint location, increases the installation speed at the expansion joint location, and facilitates the industrialization of housing.

Description

Technical Field

[0001] This invention relates to the field of building insulation, and more particularly to the construction of expansion joints for exterior walls of ultra-low energy consumption prefabricated buildings. Background Technology

[0002] Prefabricated buildings and ultra-low energy buildings have developed rapidly in recent years, representing an important direction for low-carbon and energy-saving building development. The number of design projects is gradually increasing, and the development prospects are very broad. At present, there are few cases in the building technology system that combine prefabricated building and ultra-low energy building technologies. In particular, when the prefabricated building uses a precast concrete sandwich wall panel system, there are few technical contents that need to meet the requirements of ultra-low energy buildings at the same time, and there is a lack of invention and application of integrated technologies.

[0003] The main characteristics of ultra-low energy buildings include high-performance thermal insulation exterior walls and airtightness. This is particularly evident in the building envelope system. When ultra-low energy prefabricated buildings use precast concrete sandwich wall panel systems, structural separation joints are required when expansion joints exist between buildings. Furthermore, to meet the requirements for thermal bridging in ultra-low energy buildings, these expansion joints need to be insulated and filled. Traditional design codes and atlases only specify requirements for non-prefabricated buildings and non-precast concrete sandwich wall panels, without offering solutions for these structural details. Especially with precast concrete sandwich wall panels, the precast components are factory-processed modules, making it impossible to use traditional design details for on-site installation, thus rendering the installation impossible.

[0004] Most existing technologies related to building expansion joints are either single ultra-low energy consumption or single prefabricated technologies. However, the utility model "A Novel Passive Building Exterior Wall Expansion Joint Treatment Device CN208918069U" provides a novel passive building exterior wall expansion joint treatment device, belonging to the field of building engineering technology. This device has an exterior wall expansion joint, and two exterior wall insulation boards are fixedly adhered to the outer side of the exterior wall, located on either side of the expansion joint. The expansion joint is filled with rock wool insulation board. Rock wool insulation strips are filled into the joints between the boards, and a waterproof and breathable membrane is adhered to the outside of the external wall expansion joint. Rubber expansion joint lines are filled into the joints at the front opening of the external wall insulation board. Polymer mortar is applied to the outside of the external wall insulation board, and the polymer mortar fixes the mesh cloth to the outside of the external wall insulation board. This external wall expansion joint treatment device does not damage the waterproof and breathable layer, nor does it generate thermal bridges. It can effectively ensure the construction quality of the expansion joint, and it is convenient to construct, efficient, practical, and easy to promote. The utility model CN207376838U, entitled "An Exterior Wall Expansion Joint Applicable to Passive Low-Energy Buildings," discloses an exterior wall expansion joint suitable for passive low-energy buildings. It includes a base wall, an exterior wall insulation layer, and a gap penetrating between adjacent base walls and adjacent exterior wall insulation layers. The gap is filled with rock wool or inorganic fiber spraying. One end of the rock wool or inorganic fiber spraying is equipped with a baffle, and the other end extends outward to the outside of the exterior wall insulation layer. A sealing device, such as a polyethylene foam rod, a metal cover plate, or a connecting strip, is installed on the outside of the exterior wall insulation layer. This utility model's exterior wall expansion joint for passive low-energy buildings has a more rational structure and is simple and convenient to operate. Furthermore, different types of expansion joints can be selected according to the specific gap width and gap type, allowing for flexible operation.

[0005] Existing technologies can meet the structural design requirements of the expansion joint location of ultra-low energy consumption building exterior walls on their own, but they lack related designs after the integration of prefabricated technology and ultra-low energy consumption technology, especially the related structural designs under the precast concrete sandwich exterior wall system. Existing technologies cannot effectively adapt to the installation and structural requirements of the parapet wall of the precast concrete sandwich exterior wall and cannot provide effective on-site installation guidance.

[0006] The structure for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings provided by this invention can effectively solve the above problems, ensuring the thermal insulation performance of ultra-low energy consumption buildings and the feasibility of on-site construction of prefabricated components. Summary of the Invention

[0007] In response to the problems in the background technology, and in order to solve the thermal insulation performance, durability performance and construction and installation feasibility of the expansion joint of the exterior wall in the precast concrete sandwich exterior wall system of ultra-low energy consumption prefabricated buildings, improve building performance and shorten the construction period, this invention proposes a structure suitable for the expansion joint of the exterior wall of ultra-low energy consumption prefabricated buildings.

[0008] This invention relates to a construction method for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings. The method comprises three parts: a precast concrete sandwich wall panel, a cast-in-place structural section, and an expansion joint structure. The sandwich wall panel consists of a precast concrete outer leaf panel 1, a core insulation panel 2, and a precast concrete inner leaf panel 3. The cast-in-place structural section includes a cast-in-place concrete shear wall 4. The expansion joint structure includes mounting screws 5, galvanized steel plate clips 6, galvanized steel plate finished cover plates 7, expansion joint thermal break insulation 8, thermal break strips 9, and sealant 10. The precast concrete sandwich wall panel is composed of, from the inside out, the precast concrete inner leaf panel 3, the core insulation panel 2, and the precast concrete outer leaf panel 1. The cast-in-place concrete shear wall 4 consists of two symmetrical parts spaced apart by the expansion joint width B. The concrete shear wall 4 and the precast concrete inner leaf slab 3 are flush in the horizontal direction. The sandwich insulation 2 is on the outside of the cast-in-place concrete shear wall 4. The thermal break strip 9 is located between the symmetrical cast-in-place concrete shear walls 4. The expansion joint thermal break insulation 8 is located between the symmetrical cast-in-place concrete shear walls 4 and its inner side is connected to the thermal break strip 9. Its outer side is flush with the outer side of the precast concrete outer leaf slab 1. The galvanized steel plate buckle 6 is located on the outside of the expansion joint thermal break insulation 8 and the precast concrete outer leaf slab 1. The mounting screws 5 are on the left and right sides of the galvanized steel plate buckle 6 and connected to it and the precast concrete outer leaf slab 1. The galvanized steel plate finished cover 7 is on the outside of the galvanized steel plate buckle 6. The sealant 10 is between the galvanized steel plate finished cover 7 and the galvanized steel plate buckle 6 and connected to these two parts.

[0009] Furthermore, the precast concrete inner leaf plate 3, the sandwich insulation 2, and the precast concrete outer leaf plate 1 are connected sequentially from the inside to the outside to form a precast concrete sandwich wall panel. Each component is precast in the factory to form a standard modular product. After being hoisted and positioned on the construction site, it is connected to the cast-in-place concrete shear wall 4. The precast concrete sandwich wall panel consists of two symmetrical components at the expansion joint position and is connected to two symmetrical parts of the cast-in-place concrete shear wall 4 respectively. The sandwich insulation 2 and the precast concrete outer leaf plate 1 have a longer cantilever length C than the precast concrete inner leaf plate 3 on the expansion joint side. The cantilever length C is consistent with the exposed length of the cast-in-place concrete shear wall 4 at the expansion joint position, which can ensure that the cast-in-place part is completely covered by the precast concrete sandwich wall panel after installation.

[0010] Furthermore, the precast concrete outer leaf plate 1, the sandwich insulation 2, and the cast-in-place concrete shear wall 4 are flush with each other after being installed on the expansion joint side.

[0011] Furthermore, the cast-in-place concrete shear wall 4 has an expansion joint width B between its two symmetrical parts. The expansion joint width B is calculated based on the building height, structural form, and foundation environment.

[0012] Furthermore, the thermal break strip 9 is installed in the expansion joint at a position that meets the insulation filling depth A. The thermal break strip 9 is connected to the cast-in-place concrete shear walls 4 on the left and right sides respectively by structural adhesive or pre-embedded during the construction of the cast-in-place concrete shear walls 4. The metal fold in the middle of the thermal break strip 9 has elastic deformation capability to adapt to the building deformation at the expansion joint location.

[0013] Furthermore, the galvanized steel sheet buckle 6, the galvanized steel sheet finished cover plate 7, and the thermal break strip 9 are all pre-produced finished components in the factory. The galvanized steel sheet buckle 6 and the galvanized steel sheet finished cover plate 7 can be installed as a set and interlocked. The galvanized steel sheet buckle 6 has a continuous metal fold in the middle, which has elastic deformation capacity to adapt to the building deformation at the expansion joint location. The mounting screws 5 are used to fix the galvanized steel sheet buckle 6. The distance between the installation position and the boundary of the expansion joint should be greater than or equal to 20mm to ensure that the precast concrete outer leaf slab will not be damaged or cracked. The galvanized steel sheet buckle 6, the galvanized steel sheet finished cover plate 7, and the thermal break strip 9 are fluorocarbon sprayed during factory prefabrication to ensure the aesthetics of the building facade at the expansion joint location and the durability of the components.

[0014] Furthermore, the expansion joint thermal break insulation 8 and the sandwich insulation 2 are tightly connected after installation to ensure the continuity of the building's external insulation and to prevent thermal bridges.

[0015] Furthermore, the insulation filling depth A is greater than or equal to 1000 mm.

[0016] Furthermore, the expansion joint thermal break insulation 8 is rock wool board, rock wool strip, Class A polymer polystyrene board, or inorganic lightweight aggregate insulation board; the sandwich insulation 2 is a one-layer or multi-layer structure; the sandwich insulation 2 is rock wool board, vacuum insulation board, extruded polystyrene board, graphite polystyrene board, rigid polyurethane foam board, rock wool and vacuum composite board, rock wool and extruded composite board, or rigid polyurethane foam and vacuum insulation board composite board; the weather-resistant sealant 10 is silicone sealant; and the thermal break strip 9 is rubber or elastic polyurethane.

[0017] Compared with existing methods, the beneficial effects achieved by this invention are as follows:

[0018] Traditional design specifications and atlases only address the design, construction, and requirements for external wall expansion joints in general ultra-low energy consumption buildings. These buildings often employ traditional thermal insulation thin-plastered external wall systems. However, there are currently no relevant specifications, atlases, design standards, or related content for prefabricated ultra-low energy consumption buildings that use precast concrete sandwich wall panels. This invention fills this gap in the field.

[0019] Because all components of the selected expansion joint are prefabricated in the factory, a large amount of on-site work and waste are avoided, which greatly improves the construction efficiency of the building's exterior walls, the precision of the exterior walls, and the construction quality of the expansion joint locations.

[0020] Because the expansion joint thermal break insulation 8 and the sandwich insulation 2 are tightly connected after installation and the insulation filling depth A is greater than or equal to 1000mm, cold bridges at the expansion joint location are effectively avoided, and the continuity of the building's external insulation is effectively guaranteed.

[0021] Because the internal thermal break strip 9 of the expansion joint is made of materials such as rubber and polyurethane, cold bridging inside the expansion joint is effectively avoided.

[0022] The present invention solves the design problem of expansion joints in prefabricated ultra-low energy buildings when the exterior walls are made of precast concrete sandwich panels, and puts forward requirements for actual construction steps and methods, which has strong practical guiding significance.

[0023] By adopting the above technical solution, the energy-saving and thermal insulation effect at the wall expansion joint is greatly improved, the occurrence of cold bridge is avoided, the thermal break insulation design requirements of ultra-low energy consumption buildings are met, the on-site installation speed is increased, and the structural safety and durability of the building expansion joint are enhanced.

[0024] The metal components inside and outside the expansion joint insulation are prefabricated in the factory in an industrialized and standardized manner, which meets the requirements for rapid on-site installation, greatly improving construction efficiency, reducing installation costs, and improving the accuracy of building construction and the quality of expansion joint filling and insulation construction. Attached Figure Description

[0025] Figure 1 A structural plan for expansion joints in the exterior walls of passive ultra-low energy prefabricated buildings;

[0026] Figure 2 Structural axonometric drawing for expansion joints in the exterior walls of passive ultra-low energy prefabricated buildings;

[0027] Figure 3 Axonometric drawing of a precast concrete sandwich wall panel;

[0028] Figure 4 Plan view showing the location of cast-in-place concrete shear walls and expansion joints;

[0029] Figure 5 This is an isometric drawing of the external structure of the expansion joint.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1—Precast concrete outer leaf slab; 2—Sandwich insulation; 3—Precast concrete inner leaf slab; 4—Cast-in-place concrete shear wall; 5—Installation screws; 6—Galvanized steel sheet buckle plate; 7—Galvanized steel sheet finished cover plate; 8—Expansion joint thermal break insulation; 9—Temperature break barrier strip; 10—Sealant; A—Insulation filling depth; B—Expansion joint width; C—Component cantilever length. Detailed Implementation

[0032] The following specific embodiments illustrate the specific implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The specific embodiments described herein are only for explaining this invention and are not intended to limit this invention.

[0033] Specific example 1:

[0034] Reference Figures 1 to 5 This utility model provides a structure suitable for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings.

[0035] The precast concrete sandwich wall panel includes a precast concrete outer leaf panel 1, a sandwich insulation layer 2, and a precast concrete inner leaf panel 3. This component is precast into a standardized product in the factory and transported to the construction site for installation.

[0036] The precast concrete outer leaf slab 1 is a 60mm reinforced concrete precast wall.

[0037] The precast concrete inner leaf slab 3 is a 200mm reinforced concrete precast wall.

[0038] The sandwich insulation layer 2 is an integrated insulation composed of 30mm rigid polyurethane foam, 30mm vacuum insulation board, and 30mm rigid polyurethane foam. Each layer of insulation is prefabricated in the factory to ensure that the building's exterior walls meet the insulation requirements of ultra-low energy consumption buildings.

[0039] During on-site installation, the cast-in-place concrete shear wall 4 of the external wall structure on both sides of the expansion joint is constructed first. The precast external walls on both sides of the expansion joint are constructed sequentially. After the construction of one floor is completed, the thermal break strip 9 is installed 1000mm deep inside the expansion joint from the outer boundary of the cast-in-place concrete shear wall 4. During the construction of the other side, the other side of the thermal break strip 9 is installed.

[0040] After the cast-in-place portion of the structure is completed, the precast concrete sandwich wall panel components are hoisted and installed in place on the construction site and then connected to the cast-in-place concrete shear wall 4 through a sleeve grouting process.

[0041] Subsequently, on-site, the expansion joint thermal insulation 8 was inserted according to the expansion joint width B. The expansion joint thermal insulation 8 was made of rock wool insulation board, with the outer side of the rock wool flush with the outer side of the precast concrete outer leaf slab 1.

[0042] Install galvanized steel plate buckle 6 on the outside of the precast concrete outer leaf slab 1 using mounting screws 5 to ensure that the expansion joint thermal insulation 8 is completely covered and effectively protected, and ensure that the on-site installation is firm and tight. The screw installation position should be greater than or equal to 20mm from the boundary to ensure that the precast concrete outer leaf slab 1 will not be damaged or cracked.

[0043] The galvanized steel sheet buckle panel 6 and the galvanized steel sheet finished cover plate 7 are fluorocarbon coated during factory production. The color is selected to be close to the actual finished surface of the exterior wall of the project. On site, the galvanized steel sheet finished cover plate 7 is installed and fixed on the galvanized steel sheet buckle panel 6 as a buckle, and the installation is checked to ensure that it is firm and tight. Finally, sealant 10 is applied on site between the galvanized steel sheet buckle panel 6 and the galvanized steel sheet finished cover plate 7.

[0044] Specific example 2:

[0045] Reference Figures 1 to 5 This utility model provides a structure suitable for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings.

[0046] The precast concrete sandwich wall panel includes a precast concrete outer leaf panel 1, a sandwich insulation layer 2, and a precast concrete inner leaf panel 3. This component is precast into a standardized product in the factory and transported to the construction site for installation.

[0047] The precast concrete outer leaf slab 1 is a 65mm reinforced concrete wall with a ceramic tile finish. During the prefabrication process in the factory, a 50mm gap is reserved at the expansion joint location from the boundary. The ceramic tile finish is not installed in this area to avoid damage to the ceramic tile during the on-site installation of the expansion joint.

[0048] The precast concrete inner leaf slab 3 is a 200mm reinforced ceramsite concrete precast wall.

[0049] The sandwich insulation layer 2 is a composite insulation composed of 150mm rigid polyurethane foam and 50mm rock wool insulation board. Each layer of insulation is prefabricated in the factory to ensure that the building's exterior walls meet the insulation requirements of ultra-low energy consumption buildings.

[0050] During on-site installation, the cast-in-place concrete shear wall 4 of the external wall structure on both sides of the expansion joint is constructed first, and the precast external walls on both sides of the expansion joint are constructed simultaneously. During the construction process, the two ends of the thermal break strip 9 are pre-embedded in the cast-in-place concrete shear wall 4.

[0051] After the cast-in-place portion of the structure is completed, the precast concrete sandwich wall panel components are hoisted and installed in place on the construction site and then connected to the cast-in-place concrete shear wall 4 through a sleeve grouting process.

[0052] Subsequently, the expansion joint thermal insulation 8 was inserted on site according to the expansion joint width B. The expansion joint thermal insulation 8 was made of Class A polymer polystyrene board, and its outer side was flush with the outer side of the precast concrete outer leaf slab 1.

[0053] Install galvanized steel plate buckle 6 with mounting screws 5 at the reserved position on the outside of the precast concrete outer leaf slab 1 to ensure that the expansion joint thermal insulation 8 is completely covered and effectively protected, and to ensure that the on-site installation is firm and tight. The screw installation position should be greater than or equal to 20mm from the boundary to ensure that the precast concrete outer leaf slab 1 will not be damaged or cracked.

[0054] The galvanized steel sheet buckle panel 6 and the galvanized steel sheet finished cover plate 7 are fluorocarbon coated during factory production. The color is selected to be close to the actual finished surface of the exterior wall of the project. On site, the galvanized steel sheet finished cover plate 7 is installed and fixed on the galvanized steel sheet buckle panel 6 as a buckle, and the installation is checked to ensure that it is firm and tight. Finally, sealant 10 is applied on site between the galvanized steel sheet buckle panel 6 and the galvanized steel sheet finished cover plate 7.

[0055] The above specific embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit of the technical solution of the present invention and the structure that protects the expansion joints of the building exterior walls, effectively ensuring the thermal insulation performance of the building exterior walls and preventing the exterior wall system from being damaged by external temperature changes and rainwater erosion.

Claims

1. A structure suitable for the deformation joint of the outer wall of an ultra-low energy assembled building, comprising a prefabricated concrete sandwich outer wall panel, a structural cast-in-place section, and a deformation joint structure three-part structure, characterized in that: The sandwich wall panel includes a precast concrete outer leaf panel (1), a core insulation panel (2), and a precast concrete inner leaf panel (3). The cast-in-place structural section includes a cast-in-place concrete shear wall (4). The expansion joint structure includes mounting screws (5), galvanized steel plate buckles (6), galvanized steel plate finished cover plates (7), expansion joint thermal break insulation (8), thermal break strips (9), and sealant (10). The precast concrete sandwich wall panel is composed of a precast concrete inner leaf panel (3), a core insulation panel (2), and a precast concrete outer leaf panel (1) from the inside out. The cast-in-place concrete shear wall (4) is composed of two symmetrical parts with a spacing equal to the expansion joint width (B). The cast-in-place concrete shear wall (4) and the precast concrete inner leaf panel (3) are flush in the horizontal direction. The insulation (2) is located on the outside of the cast-in-place concrete shear wall (4). The thermal break strip (9) is located between the symmetrical cast-in-place concrete shear walls (4). The thermal break insulation (8) of the expansion joint is located between the symmetrical cast-in-place concrete shear walls (4) and its inner side is connected to the thermal break strip (9). Its outer side is flush with the outer side of the precast concrete outer leaf plate (1). The galvanized steel plate buckle (6) is located on the outside of the thermal break insulation (8) of the expansion joint and the precast concrete outer leaf plate (1). The mounting screws (5) are located on the left and right sides of the galvanized steel plate buckle (6) and connected to it and the precast concrete outer leaf plate (1). The galvanized steel plate finished cover plate (7) is located on the outside of the galvanized steel plate buckle plate (6). The sealant (10) is located between the galvanized steel plate finished cover plate (7) and the galvanized steel plate buckle plate (6) and connected to these two parts.

2. The structure for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings according to claim 1, characterized in that: The precast concrete inner leaf plate (3), the sandwich insulation (2), and the precast concrete outer leaf plate (1) are connected sequentially from the inside to the outside to form a precast concrete sandwich wall panel. The precast concrete sandwich wall panel consists of two symmetrical components at the expansion joint and is connected to two symmetrical parts of the cast-in-place concrete shear wall (4). The sandwich insulation (2) and the precast concrete outer leaf plate (1) have a longer cantilever length (C) than the precast concrete inner leaf plate (3) on the expansion joint side. The cantilever length (C) is consistent with the exposed length of the cast-in-place concrete shear wall (4) at the expansion joint.

3. The structure for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings according to claim 2, characterized in that: The precast concrete outer leaf plate (1), the sandwich insulation (2) and the cast-in-place concrete shear wall (4) are set on one side of the expansion joint, and the precast concrete outer leaf plate (1), the sandwich insulation (2) and the cast-in-place concrete shear wall (4) are flush with each other.

4. The structure for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings according to claim 3, characterized in that: The cast-in-place concrete shear wall (4) has two symmetrical parts with an expansion joint width (B) in between.

5. The structure for expansion joints in exterior walls of ultra-low energy consumption prefabricated buildings according to claim 4, characterized in that: The thermal break strip (9) is located at the insulation filling depth (A) inside the expansion joint. The thermal break strip (9) is connected to the cast-in-place concrete shear walls (4) on the left and right sides. The thermal break strip (9) has a metal folded edge in the middle.

6. The structure for expansion joints in exterior walls of ultra-low energy consumption prefabricated buildings according to claim 5, characterized in that: The galvanized steel plate buckle (6) and the galvanized steel plate finished cover plate (7) are fitted together and locked together. The galvanized steel plate buckle (6) is provided with a continuous metal fold in the middle. The mounting screw (5) fixes the galvanized steel plate buckle (6) at a distance greater than or equal to 20mm from the boundary of the expansion joint.

7. The structure for expansion joints in exterior walls of ultra-low energy consumption prefabricated buildings according to claim 6, characterized in that: The expansion joint thermal break insulation (8) and the sandwich insulation (2) are interconnected.

8. The structure for expansion joints in exterior walls of ultra-low energy consumption prefabricated buildings according to claim 7, characterized in that: The insulation filling depth (A) is greater than or equal to 1000 mm.

9. The structure for expansion joints in the exterior walls of ultra-low energy consumption prefabricated buildings according to claim 1, characterized in that: The expansion joint thermal break insulation (8) is rock wool board, rock wool strip, Class A polymer polystyrene board or inorganic lightweight aggregate insulation board. The sandwich insulation (2) is a one-layer or multi-layer structure. The sandwich insulation (2) is rock wool board, vacuum insulation board, extruded polystyrene board, graphite polystyrene board, rigid polyurethane foam board, rock wool and vacuum composite board, rock wool and extruded composite board or rigid polyurethane foam and vacuum insulation board composite board. The sealant (10) is silicone sealant. The thermal break strip (9) is rubber or elastic polyurethane.

Images