Corner sealing system for the waterproof and / or airtight sealing of an external corner-shaped structure on a building envelope, and method for applying the corner sealing system

Abstract

The present invention relates to a corner sealing system for the waterproof and / or airtight sealing of an external corner-shaped structure on a building envelope, such as roofs, facades, basements, and window frames. In the construction sector, such edges, where different surfaces meet, often form critical points in the waterproofing of buildings. These locations are particularly susceptible to leaks, which can lead to considerable damage to the structure and the interior of buildings. In current building practice, there is a clear and urgent need for a universally applicable corner sealing system that transcends the limitations of existing solutions. This need is driven by various factors characteristic of the contemporary construction sector and the growing do-it-yourself market. The invention offers an innovative corner sealing system that combines the following features: Easy installation for both professionals and DIYers; Universal applicability to various covering materials for building envelopes; Flexibility to adapt to different corner shapes and dimensions; No inherent limitations in shape or size; Installation without the need for special tools or on-site adjustments; High accuracy in sealing, especially with complex geometries.

Description

[0001] CORNER SEALING SYSTEM FOR THE WATERPROOF AND / OR AIRTIGHT SEALING OF AN EXTERNAL CORNER-SHAPED STRUCTURE ON A BUILDING ENVELOPE, AND METHOD FOR APPLYING THE CORNER SEALING SYSTEM

[0002] The present invention relates to a corner sealing system for the waterproof and / or airtight sealing of an external corner-shaped structure on a building envelope, such as roofs, facades, basements, and window frames. In the construction sector, such edges, where different surfaces meet, often form critical points in the waterproofing of buildings. These locations are particularly susceptible to leaks, which can lead to considerable damage to the structure and the interior of buildings.

[0003] In current building practice, there is a clear and urgent need for a universally applicable corner sealing system that transcends the limitations of existing solutions. This need is driven by various factors characteristic of the contemporary construction sector and the growing do-it- yourself (DIY) market.

[0004] Firstly, there is an increasing demand for sealing systems that can be installed easily and correctly by both skilled workers and DIYers. The complexity of many existing systems often forms a barrier to effective application, leading to suboptimal results and potential long-term water damage.

[0005] Secondly, construction projects are characterised by a great variation in corner shapes and corner dimensions. Existing sealing systems often lack the necessary flexibility to adapt to this diversity without compromising waterproofing or aesthetics. This results in situations where custom work is required, which can be both time- and cost-intensive.

[0006] In addition, there is a growing need for sealing solutions that have no predetermined limitations in shape or size. The rigidity of many current systems limits their applicability in nonstandard situations. Furthermore, many systems offer insufficient flexibility for effective application to the diverse corner shapes and eaves angles that occur in practice. This can lead to improvisation and potentially unreliable seals. Existing corner sealing systems are often preformed for fixed angles, making them not universally applicable for deviating angle variations. This often results in suboptimal seals that can fail overtime.

[0007] Moreover, many current systems lack the required accuracy in the sealing, especially with complex corner geometries. This leads to an increased risk of leaks and reduced durability of the seal over time.

[0008] In summary, there is a clear market need for an innovative corner sealing system that combines the following features: Easy installation for both professionals and DIYers;

[0009] Universal applicability to various sealing materials for building envelopes;

[0010] Flexibility to adapt to different corner shapes and corner dimensions;

[0011] No inherent limitations in shape or sizing;

[0012] Installation without the need for special tools or on-site adjustments;

[0013] High accuracy in sealing, especially with complex geometries.

[0014] The development of a system that meets all these criteria would represent a significant advance in the construction sector and offer a solution to the long-standing challenges associated with the effective sealing of corner-shaped building structures.

[0015] The external corner-shaped structure, as it occurs in various building structures, can be defined by the following characteristic elements:

[0016] 1. Corner point:

[0017] The corner point forms the central element of the external corner-shaped structure. It is defined as the point where two or more surfaces of the building structure meet and form an angle p. In practice, p is typically between 45° to 135°, and in many cases amounts to approximately 90°.

[0018] 2. Flanks:

[0019] The flanks are the side surfaces that define the corner in the (roof) edge and extend from the corner point. In a typical external corner, two flanks are present. These flanks can vary in length, material, and surface structure, depending on the specific building structure. The transition between the flanks and the corner point forms a critical zone for waterproofing.

[0020] 3. Eaves angle:

[0021] The eaves angle, also known as the roof-to-wa ll angle, marks the connection between a flank of the (roof) edge and an adjacent horizontal surface (such as a roof). The eaves angle is characterised by a specific angle a, where 25° < a < 90°.

[0022] 4. Flat surface:

[0023] This surface extends from the eaves angle and forms the horizontal or nearly horizontal part of the structure on which water can collect. The effective sealing of the transition between this flat surface and the flanks is crucial for the overall watertightness of the structure.

[0024] The main objective of the present invention is to address the aforementioned problems by providing an improved corner sealing system. To this end, the corner sealing system according to the invention comprises an assembly of:

[0025] - a first flexible corner sealing element, arranged for partial placement on a flat surface of the building envelope, the corner point, partial placement against the flanks and the eaves angles; - a second flexible corner sealing element , arranged for placement over a first flexible corner sealing element arranged in the external corner-shaped structure and over the edge, wherein

[0026] - the first and second corner sealing elements are substantially flat in an unused state;

[0027] - the first and second corner sealing elements are manufactured from a single piece of material , which material is weather-resistant and / or UV-resistant;

[0028] - both the first corner sealing element and the second corner sealing element comprise an installation side, which is covered by a protective removable foil, which installation side can be welded, glued, or adhesively applied to a surface according to the manufacturer's instructions; wherein the first corner sealing element is divided into at least three sections:

[0029] - a first section arranged for placement on the flat surface comprising an angle-following second section provided with a bend for placement in the eaves angles of the two flanks;

[0030] - a third section arranged for placement against the first flank; and

[0031] - a fourth section arranged for placement against the second flank, wherein the third section and the fourth section are connected to the first section by means of the angle-following second section.

[0032] The described corner sealing system offers a number of significant advantages over conventional sealing methods:

[0033] By applying the first corner sealing element wherein the third and fourth sections are connected to the first section in the angle-following second section, the corner sealing system is suitable for various types of external corners on a building envelope, such as roofs and facades, with a wide range of eaves angles (25° < a < 90°). When applying the first corner sealing element, the first section can be applied into the corner of the structure without any difficulty, with the third and fourth sections following the eaves angle.

[0034] The use of two flexible corner sealing elements creates a double layer of protection, which guarantees the reliability of the seal.

[0035] Both corner sealing elements are flexible, allowing them to easily adapt to surface irregularities and different corner shapes.

[0036] The assembly, formed by the two corner sealing elements, is substantially flat in an unused state, which simplifies storage and transport.

[0037] The pre-applied adhesive layer with a protective foil enables quick and accurate installation without additional tools or skills.

[0038] The three-part structure of the first corner sealing element, with a specific section for the flat surface and the eaves angles, ensures a precise seal of critical areas. The production of the inventive corner sealing system, the simplified installation and the reliability of the inventive corner sealing system can lead to significant long-term cost savings.

[0039] In a first embodiment of the inventive corner sealing system according to the invention, the second corner sealing element comprises a pointed fifth section, arranged for placement over the first flexible corner sealing element applied to the external corner-shaped structure, wherein the eaves angles a are at an angle of 25° < a < 90°.

[0040] The pointed fifth section is an important feature of the second corner sealing element and offers several advantages:

[0041] The pointed section is specifically designed to provide additional protection to the most critical point of the external corner - namely the corner point itself. This is the place where the two flanks and the flat surface meet, and often the most vulnerable point for water penetration.

[0042] Due to the pointed configuration, this section can effectively adapt to eaves angles ranging from approximately 25° to approximately 75°. This makes the system very versatile and applicable to a wide range of building structures.

[0043] Due to the specific configuration, the pointed section, which is designed for easy placement over the first corner sealing element, can be applied quickly and accurately.

[0044] The pointed section enables a neat and streamlined corner finish, thereby improving the overall aesthetic appearance of the construction.

[0045] In a second embodiment of the inventive corner sealing system according to the invention, the second corner sealing element comprises a rectangular sixth section, arranged for placement over a first corner sealing element applied in the external corner for an external corner-shaped structure wherein the eaves angles a are at an angle of approximately 75° to approximately 90°.

[0046] The rectangular sixth section in the second corner sealing element is specifically designed for situations where the eaves angles are approximately 90°, which is common in standard building structures. This ensures an accurate and efficient seal for this common corner configuration. The rectangular shape better aligns with the geometry of right angles, resulting in a better fit and potentially fewer creases or folds in the material. This makes this rectangular sixth section easier to place than a pointed section , which can reduce installation time and the risk of errors. The rectangular shape can provide more stability to the seal at right angles, contributing to the long-term durability of the seal.

[0047] In a preferred embodiment of the corner sealing system according to the invention, the fifth and sixth sections are integrated into one second corner sealing element. By offering both a pointed fifth section (for variable angles) and a rectangular sixth section (for right angles) in one second corner sealing element, the system becomes even more versatile and suitable for a wider range of building situations.

[0048] Preferably, in the discussed embodiments of the corner sealing system according to the invention, the removable foil is scored along the edges of the first, second, third, and fourth sections of the first corner sealing element.

[0049] By scoring the foil along the edges of the sections, it becomes easier to remove the protective foil per section or sub-section during installation. This reduces the risk of errors and allows for a more controlled placement. The scored foil enables the installer to position each section separately and accurately, contributing to a better overall seal. By only exposing one section at a time, the risk of contamination of the adhesive layer during installation is minimized. The ability to reveal sections separately gives the installer more flexibility to make adjustments during application, without exposing the entire adhesive layer. Especially with larger corner sealing elements, removing the foil in sections can significantly improve the manageability of the product. The controlled removal of the foil per section ensures that each section can optimally adhere to the surface, contributing to the overall effectiveness of the seal.

[0050] Although removing the foil in sections may seem like more steps, it can ultimately save time by allowing for a more controlled and accurate installation, which reduces the risk of errors and the need for corrections.

[0051] Overall, the scored film increases the likelihood of a successful and effective installation of the corner sealing system.

[0052] In a preferred embodiment of the sealing system according to the invention, the first section is divided into at least three sub-sections, wherein one sub-section is provided in the bend of the angle-following second section, wherein the removable foil is scored along the edges of this sub-section and the removable foil of this sub-section is usable for marking a part of an outer circumference of the sub-section on the flat surface.

[0053] By dividing the first section into at least three sub-sections, even more precise placement and sealing is possible, especially in the critical area around the eaves angle. The sub-section in the bend of the angle-following second section ensures an accurate seal at the positions where the flat surface transitions into the eaves angle, thereby guaranteeing watertightness. The scored removable foil along the edges of this specific sub-section allows for a very controlled and accurate placement. The ability to use the removable foil of this subsection for marking a part of the outer circumference on the flat surface offers several advantages: - Accurate positioning: It enables the installer to predetermine and mark the exact position of the element.

[0054] - Reduced risk of errors: By marking in advance, the installer can identify potential problems before the adhesive layer is exposed.

[0055] - Time saving: This method ensures a more structured and uniform approach, thereby saving time.

[0056] Through controlled placement per sub-section, the risk of air entrapment is further minimized.

[0057] The specific attention to the area under the bend of the angle-following second section ensures optimal adhesion precisely where adhesion is most needed. This refinement of the design contributes to an even more precise and reliable installation of the corner sealing system, especially in the most critical areas around the eaves angle. The innovative use of the removable foil as a marking aid contributes to the ease of use and accuracy when positioning the innovative corner sealing system.

[0058] In a further elaboration of the above-mentioned embodiments of the corner sealing system according to the invention, wherein the two flanks of the external edge are at an angle p, the bend in the first corner sealing element forms an angle that is substantially equal to p.

[0059] By matching the bend in the first corner sealing element to the angle p of the external edge, a very precise fit is achieved. This ensures a better seal and significantly reduces the risk of leaks. The precise connection between the bend of the sealing element and the angle of the outer edge also minimizes the risk of gaps or weak points in the seal.

[0060] The innovative corner sealing system is thus suitable for a wide range of corner shapes in different building structures, which increases the versatility of the corner sealing system. By adapting the shape of the first corner sealing element to the angle of the external edge, unnecessary stress in the material is prevented, which benefits the durability of the seal and results in a neater and more professional finish.

[0061] The preformed bend that corresponds to the angle of the external edge makes installation simpler and faster, which aligns with the need for simple and reliable installation for both professionals and DIYers.

[0062] Preferably, the innovative corner sealing system is suitable for the waterproof and / or airtight sealing of an external corner-shaped structure in which p lies in the range between 45° to 135°. The innovative corner sealing system is therefore suitable for common corner shapes in building structures (usually 90°), which increases its applicability in various situations.

[0063] The invention also relates to a method for applying the innovative corner sealing system. To this end, the method comprises the following steps: step a), determining the angle p and choosing a corner sealing system suitable for angle 0; step b). removing the foil of the one sub-section; step c). positioning the foil of the one sub-section on the flat surface in the bend of the cornershaped structure, marking the outer circumference of the said foil on the flat surface and removing the said foil from the flat surface; step d). positioning the one sub-section of the first corner sealing element with the adhesive layer on the marked position on the flat surface; step e). removing the foil of the remaining sub-sections and positioning the remaining subsections with the adhesive layer on the flat surface; step f). removing the foil of the third section and positioning the third section with the adhesive layer against the first flank; step g). removing the foil of the fourth section and positioning the fourth section with the adhesive layer against the second flank; step h). removing the foil of the second corner sealing element and positioning the second corner sealing element with the adhesive layer over the first corner sealing element.

[0064] The order for carrying out step f) and step g) is not important. Step g) can therefore be carried out earlier than step f).

[0065] By using the foil as a marking aid (step c), a very precise placement of the first element is made possible.

[0066] The steps shown break down the installation process into clear, manageable steps, which reduces the risk of errors and increases accuracy.

[0067] By removing the foil step-by-step and applying it directly, the risk of contamination or damage to the adhesive layer is minimized, whereby the ability to place sections separately provides room for minor adjustments during the execution of the method. The step-by-step approach also makes it easier to prevent or remove air bubbles during installation.

[0068] The clear step-by-step approach makes application of the innovative corner sealing system accessible to professionals or DIYers. The installer can check the placement after each step and correct if necessary, which benefits the overall quality of the installation.

[0069] The step-by-step approach creates a standardised installation process that can be consistently repeated for every corner, regardless of the specific location or circumstances.

[0070] The method ensures that the second corner sealing element is correctly positioned over the first corner sealing element, which guarantees the double protection of the system. This method is applicable to different corner shapes, which emphasises the versatility of the innovative corner sealing system.

[0071] In a first preferred embodiment of the method according to the invention, wherein the eaves angles a lie between approximately 25° and approximately 75°, step h) comprises the following sub-step: step h-1). removing the foil of the fifth and sixth sections and positioning the fifth section with the tip downwards in the corner and the sixth section with the adhesive layer against the first flank and against the second flank. The instruction to place the tip downwards in the corner for this specific structure provides a clear reference point for installers, which reduces the risk of errors.

[0072] In a second preferred embodiment of the method according to the invention, wherein the eaves angles a lie between approximately 75 ° and approximately 90°, step h) comprises the following sub-step: step h-2). removing the foil of the sixth section and positioning the sixth section downwards and the fifth section with the adhesive layer against the first flank and against the second flank. The instruction to place the rectangular section downwards for this specific edge again provides a clear reference point for installers, which reduces the risk of errors.

[0073] Most preferably, the method according to the invention comprises the further step: step i). cutting the part of the fifth section or sixth section of the second corner sealing element protruding above the structure up to a top side of the corner and positioning the cut parts against the top side and / or rear side of the structure.

[0074] By cutting the protruding part, the second sealing element can be precisely adapted to the specific shape and dimensions of the structure, resulting in a custom-fitted seal. Positioning the cut parts against the top side and / or rear side of the structure provides an extra barrier against water ingress, which increases the overall effectiveness of the seal. This step makes the corner sealing system suitable for structures having different heights and shapes, thereby increasing the versatility of the product.

[0075] This step allows installers to make on-site adjustments and makes the system suitable for both standard and non-standard configurations, which increases its applicability in different construction situations.

[0076] Although this step introduces an element of customisation, the method remains repeatable and consistently applicable to different locations within a project.

[0077] Moreover, this step eliminates the need for different corner sealing systems for different edge heights in the structures, which can reduce production and inventory costs. The invention will be discussed in more detail hereafter with reference to the following figures, wherein:

[0078] Figure 1 A shows an installation side of the first corner sealing element of the inventive corner sealing system according to the invention;

[0079] Figure 1 B shows an exposed side of the first corner sealing element of the inventive corner sealing system according to the invention;

[0080] Figure 2A shows an installation side of the second corner sealing element of the inventive corner sealing system according to the invention;

[0081] Figure 2B shows an exposed side of the second corner sealing element of the inventive corner sealing system according to the invention;

[0082] Figure 3A shows the manner in which the release foil is attached to the installation side of the first corner sealing element;

[0083] Figure 3B shows the final shape of the first corner sealing element in the form for placement in the corner-shaped structure;

[0084] Figure 4A shows a first final shape of the second corner sealing element 20 in the form for placement in the corner-shaped structure;

[0085] Figure 4B shows a second final shape of the second corner sealing element 20 in the form for placement in the corner-shaped structure;

[0086] Figures 5Ato 5J show the method for applying the inventive corner sealing system to an external corner-shaped structure on a building envelope in which the eaves angles a amount to approximately 90°.

[0087] Figures 6Ato 6F show the method for applying the inventive corner sealing system to an external corner-shaped structure on a building envelope in which the eaves angles are at an angle of 45°.

[0088] Like numerals in different figures indicate like parts.

[0089] Figure 1 A shows an installation side of the first corner sealing element 10 of the inventive corner sealing system according to the invention. A pre-applied adhesive layer is applied to the installation side. This adhesive layer is covered by a protective release foil.

[0090] The first corner sealing element 10 is manufactured from a single piece of flexible flat material, which is weather-resistant and / or UV resistant. Suitable materials include EPDM, PVC, POCB, PIB, TPE, bitumen, TPO, polyurethane, or butyl.

[0091] The first corner sealing element 10 is divided into three sections 11 , 12, and 13. The first section 11 is arranged for placement on the flat surface. The first section 11 comprises an angle-following second section 14 comprising subsections 14a, 14b, and 14c, wherein sub-section 14a comprises a bend 16 for placement in the eaves angles of the two flanks of an external corner-shaped structure. The first section 11 is divided into three sub-sections 11a, 11 b, and 11 c. The sub-section 11 a is adjacent to subsection 14a. The removable foil is scored along the edges of these sub-sections. The removable foil of sub-section 11a can be used, after removal from the first corner sealing element, for marking a part of an outer circumference of the sub-section 11a on the flat surface.

[0092] Preferably, the release foil of sub-section 11 b and sub-section 14b are integrated into one release foil. Preferably, the release foil of sub-section 11 c and sub-section 14c are integrated into one release foil. Additionally, the release foil of sub-section 11 a and sub-section 14a are preferably separated from each other.

[0093] The third section 12 is arranged for placement against the first flank of the external corner-shaped structure.

[0094] The fourth section 13 is arranged for placement against the second flank of the external corner-shaped structure.

[0095] The third section 12 and fourth section 13 are adjacent and are separated by a cut 15. Both sections 12 and 13 are connected to section 11 by means of the angle-following second section 14.

[0096] The said sections and sub-sections are scored in the removable foil or release foil.

[0097] The first corner sealing element 10 is referred to by the inventor as the Bumblebee sleeve due to the resemblance to the head of the cartoon character Bumblebee.

[0098] Figure 1 B shows the other side of the first corner sealing element 10 of the inventive corner sealing system according to the invention. This side forms the exposed side. On this side, only sections 11 , 12, and 13 are visible.

[0099] Figure 2A shows an installation side of the second corner sealing element 20 of the inventive corner sealing system according to the invention. The second corner sealing element 20, like the first corner sealing element 10, is manufactured from a single piece of flexible flat material, which is weather-resistant and / or UV resistant, such as EPDM, PVC, POCB, PIB, TPE, bitumen, TPO, polyurethane, or butyl.

[0100] A pre-applied adhesive layer is applied to this installation side. The adhesive layer is covered by a protective release foil. The second corner sealing element 20 comprises a pointed fifth section 21 . This section 21 is arranged for placement over the first flexible corner sealing element 10 applied to the external corner-shaped structure, wherein the eaves angles a are at an angle of 25° < a < 75°. Opposite section 21 , the second corner sealing element 20 has a rectangular sixth section 22. This section 22 is arranged for placement over a first flexible corner sealing element 10 applied in the external corner wherein the eaves angles a are at an angle of approximately 90°.

[0101] Section 21 is preferably subdivided into multiple sub-sections 21 a, 21 b, and 21c to facilitate placement of the second corner sealing element 20 on the first corner sealing element 10.

[0102] For the same reasons, section 22 is preferably subdivided into multiple sub-sections 22a, 22b, and 22c to facilitate placement of the second corner sealing element 20 on the first corner sealing element 10.

[0103] The said sections and sub-sections are scored in the release foil.

[0104] The second corner sealing element 20 is referred to by the inventor as the Tuxedo sleeve due to the resemblance to the tuxedo suit.

[0105] Figure 2B shows the other side of the second corner sealing element 20 of the inventive corner sealing system according to the invention. This side forms the exposed side. None of the sections are visible on this side.

[0106] Figure 3A shows how the release foil 17 is attached to the installation side of the first corner sealing element 10. The figure shows how the release foil 17 of the first sub-section 11 a of the first corner sealing element 10 can be removed. It is noted here that all sections and subsections of both the first corner sealing element 10 and the second corner sealing element 20 are provided with release foil 17 on the installation side, whereby the foil can be removed in the same manner.

[0107] Both the first corner sealing element 10 and the second corner sealing element 20 are preferably manufactured from a sheet or plate of weather-resistant and / or UV-resistant material such as EPDM, PVC, or POCB. However, this list is not limited. Preferably, the peripheral shape of both the first corner sealing element 10 and the second corner sealing element 20 is punched, cut (for example with a knife, laser, or water jet), or rolled from the sheet or plate.

[0108] Preferably, the sheet or plate is provided with a release foil on one side. The release foil is scored during the production of the first corner sealing element 10 and the second corner sealing element 20, so that both corner sealing elements 10;20 are subdivided into sections and / or sub-sections.

[0109] The release foil of section 11a can be used in an inventive manner as a template for determining the position of the first corner sealing element 10 on the flat surface of the building envelope. Marking the correct positioning of this template on the flat surface guarantees that the angle-following second section 14 of the first corner sealing element 10 is brought to the correct height in the eaves angles of the corner-shaped structure.

[0110] The starting point 15a of cut 15 is a critical point for creating a waterproof and / or airtight seal. This starting point 15a must be higher than the corner point of the corner-shaped structure when positioning the first corner sealing element 10.

[0111] Figure 3B shows the final shape of the first corner sealing element 10 in the form for placement in the corner-shaped structure. Sub-sections 11a, 11 b, and 11c are arranged for placement on the flat surface of a building envelope. Second section 14 is arranged for placement in the eaves angles of the corner-shaped structure. Third section 12 and fourth section 13 are arranged for placement against the flanks of the corner-shaped structure. In the figure, only the starting point of the cut 15 is still visible since the third section 12 and fourth section 13 have been positioned apart. However, the starting point of the cut 15 lies above the angle-following sub-section 14a of the second section 14, so that when the first corner sealing element 10 is positioned, cut 15 lies above the corner point of the corner-shaped structure.

[0112] The starting point 15 is provided with a rounding to prevent tearing.

[0113] Figure 4A shows a first final shape of the second corner sealing element 20 in the form for placement in the corner-shaped structure. This shape is for placement in a corner-shaped structure in which the eaves angles form an angle between approximately 75°and approximately 90° with the flat surface of the building envelope. The rectangular sixth section 22, formed by sub-sections 22a, 22b, and 22c, is hereby positioned downward.

[0114] Figure 4B shows a second final shape of the second corner sealing element 20 in the form for placement in the corner-shaped structure. This second shape is for placement in a corner-shaped structure in which the eaves angles form an angle of 25° < a < 75°, but most preferably 45°. with the flat surface of the building envelope. The pointed fifth section 21 , formed by sub-sections 21a, 21 b, and 21 c, is hereby positioned downward.

[0115] The second shape is achieved by flipping the first shape.

[0116] This measure makes the corner sealing system according to the invention suitable for corner-shaped structures with eaves angles with an angle a in the range of approximately 75° and approximately 90° and for corner-shaped structures with eaves angles with an angle a in the range of approximately 25° and approximately 75° simply by flipping the second corner sealing element 20.

[0117] Figures 5Ato 5J show the method for applying the inventive corner sealing system to an external corner-shaped structure on a building envelope wherein the eaves angles a lie between approximately 75° and 90° and the inventive corner sealing system is adapted to the angle p. Figure 5A shows the building envelope 100 with a corner-shaped upstanding structure or edge 101 , wherein an outer corner 102 is scored in the roofing.

[0118] Figure 5B shows how the release foil 17 of sub-section 11 a is used for marking a part of the outer circumference of the said foil 17 on the flat surface of the building envelope 100. It is understood that the said foil 17 has been pulled away from sub-section 11a of the first corner sealing element 10.

[0119] Figure 5C shows the remaining marking 103 from step 5B, where the foil 17 has been removed.

[0120] Figure 5D shows how the first corner sealing element 10 is positioned against the external corner-shaped structure 101 in the outer corner 102, wherein the foil of sub-section 14a has been removed and sub-section 11a and sub-section 14a are positioned tightly against the marked marking 103 on the flat surface 100 with the adhesive layer.

[0121] Figure 5E shows how the first corner sealing element 10 is ultimately positioned against the external corner-shaped structure 101 in the outer corner 102. At this stage, the release foil of the remaining sections and sub-sections has been removed and sub-sections 11a, 11 c have been attached to the flat surface 100 with the adhesive layer. Additionally, the third section 12 and fourth section 13 have been positioned against the flanks 104 and 105 of the corner-shaped structure.

[0122] Figure 5F shows how the second corner sealing element 20 with the rectangular sixth section 22 as shown in Figure 4A is positioned downwards against the corner point of the edge 101 , whereby the release foil has obviously been removed first. Preferably, the release foil of sub-section 22b is removed first, after which this sub-section 22b of the second corner sealing element 20 is attached against the corner by means of the adhesive layer. Then, the release foil of the other sub-sections 22a and 22c is removed and these sub-sections are adhered against the flanks over the third and fourth sections 12; 13 of the first corner sealing element 10.

[0123] Figure 5G shows the manner in which the protruding section 21 of the second corner sealing element 20 must be scored or cut along the longitudinal direction of sub-section 21c, thereby separating sections 21a and 21 b from each other.

[0124] Figure 5H shows the manner in which section 21 b is adhered against the top edge after the corresponding foil has been removed.

[0125] Figure 5I shows the manner in which the protruding parts of 21 a and 21 b are further cut in after section 21a has been adhered over section 21 b against the top edge after the corresponding foil has been removed. Figure 5J shows the end result of the inventive method, wherein the assembly of the first corner sealing element 10 and the second corner sealing element 20 have been applied.

[0126] The advantage of this method is that the method is easy to perform for a professional and a DIYer. The method also yields an identical result upon repetition, which provides a uniform appearance across different finished corners.

[0127] Figures 6Ato 6F show the method for applying the inventive corner sealing system to an external corner-shaped structure on a building envelope in which the eaves angles are at an angle of 45° and the inventive corner sealing system is adapted to the angle p.

[0128] Figure 6A shows how the first corner sealing element 10 is ultimately positioned against the external corner-shaped structure 101 in the outer corner 102. In this case, the release foil of the remaining sections and sub-sections has been removed and sub-sections 11 a, 11 c have been attached to the flat surface 100 with the adhesive layer. Additionally, the third section 12 and fourth section 13 have been positioned against the flanks 104 and 105 of the corner-shaped structure.

[0129] Figure 6B shows the manner in which the second corner sealing element 20 with the pointed fifth section 21 as shown in Figure 4B is positioned downwards against the corner point of the edge 101 , whereby the release foil has obviously been removed first. Preferably, the release foil of sub-section 21c is removed first, after which this sub-section 21c of the second corner sealing element 20 is attached against the corner by means of the adhesive layer. Subsequently, the release foil of the other sub-sections 21 a and 21 b is removed and these subsections are adhered against the flanks over the third section 12 and fourth section 13 of the first corner sealing element 10.

[0130] Figure 6C shows the manner in which the protruding section 22 of the second corner sealing element 20 must be scored or cut along the longitudinal direction of sub-section 22b, thereby separating sections 22a and 22c from each other.

[0131] Figure 6D shows the manner in which section 22a is adhered against the top edge.

[0132] Figure 6E shows the manner in which section 22c is adhered over section 21a against the top edge after the corresponding foil has been removed.

[0133] Figure 6F shows the end result of the inventive method, wherein the assembly of the first corner sealing element 10 and the second corner sealing element 20 have been applied to an external corner-shaped structure on a building envelope in which the eaves angles are at an angle of 45° Preferably, each foil is marked with indications for the corresponding step of the method according to the invention. This increases the ease of use of the inventive corner sealing system and reduces the risk that the steps of the method are carried out in the wrong order.

[0134] The figures show a corner sealing system in which the installation sides of the first and second corner sealing element comprise an adhesive layer, which is covered with a release foil. However, this is for explanation only. The invention is explicitly not limited thereto. Any other installation side with release foil with common fastening methods, as specified by the manufacturer of the chosen material, falls under the invention.

[0135] Finally, it is noted that the corner sealing system according to the invention offers the following advantages:

[0136] • Simple and error-free installation: The preformed components and the integrated template allow for accurate installation without the user having to perform additional measurements.

[0137] • Universal applicability: Suitable for a wide range of corner variations and materials, making the system easy to apply in various construction situations, from roofs to facades and basements.

[0138] The corner sealing system according to the invention represents a significant improvement in the technology of corner sealing systems. The combination of preformed components, an integrated template, and universal applicability offers a unique solution for sealing external corners in various structures. This invention offers both professionals and DIYers a simple and effective way to waterproof corners, with a guaranteed quality finish without extra adjustments or complicated measuring procedures.

[0139] The scope of protection of the patent is determined by the claims, with the description and the drawings serving to explain these claims.

Claims

CLAIMS1 . Corner sealing system for the waterproof and / or airtight sealing of an external corner-shaped structure on a building envelope, such as a roof or facade, wherein the corner-shaped structure comprises: a corner point, wherein a flat surface (100) of the building envelope and the structure meet and form a corner (102); two flanks (104;105), which form the sides of the corner (102) and extend from the corner point, wherein the connection between the flank and the flat surface (100) is at an angle a of 25 < a < 90°, hereinafter referred to as eaves angle; characterized in that the corner sealing system comprises an assembly of:- a first flexible corner sealing element (10), arranged for partial placement on a flat surface (100) of the building envelope, the corner point, partial placement against the flanks (104;105) and the eaves angles;- a second flexible corner sealing element (20), arranged for placement over a first flexible corner sealing element (10) applied in the external corner-shaped structure and over the structure, wherein:- the first and second corner sealing elements (10;20) are substantially flat in an unused state;- the first and second corner sealing elements (10;20) are manufactured from a single piece of material which material is weather-resistant and / or UV-resistant;- both the first corner sealing element (10) and the second corner sealing element (20) comprise an installation side, which is covered by a protective removable foil (17); wherein the first corner sealing element (10) is divided into at least three sections:- a first section (11) arranged for placement on the flat surface (100) comprising an anglefollowing second section (14) provided with a bend for placement in the eaves angles of the two flanks (104;105);- a third section (12) arranged for placement against the first flank (104) ; and- a fourth section (13) arranged for placement against the second flank (105), wherein the third section (12) and the fourth section (13) are connected to the first section (11 ) by means of the angle-following second section (14).

2. Corner sealing system according to claim 1 , wherein the second corner sealing element (20) comprises a pointed fifth section (21), arranged for placement over the first corner sealing element (10) applied to the external corner-shaped structure, wherein the eaves angles a are at an angle of approximately 25° < a < approximately 75°.

3. Corner sealing system according to claim 1 or 2, wherein the second corner sealing element (20) comprises a rectangular sixth section (22), arranged for placement over a first corner sealing element (10) applied in the external corner (102) and the eaves angles a are at an angle of approximately 75° < a < approximately 90°.

4. Corner sealing system according to one of the preceding claims, wherein the removable foil (17) is scored along the edges of the first, second, third, and fourth sections (11 ; 14; 12; 13) of the first corner sealing element (10).

5. Corner sealing system according to claim 4, wherein the first section (11) is divided into at least three sub-sections (11 a; 11 b; 11c), wherein one sub-section (11a) is provided in the bend of the angle-following second section (14), wherein the removable foil (17) is scored alongthe edges of this sub-section (11a) and the removable foil (17) of this sub-section (11 a) is usable for marking a part of an outer circumference of this sub-section (11a) on the flat surface (100).

6. Corner sealing system according to one of the preceding claims, wherein the two flanks (104;105) of the external structure are at an angle p and the bend (16) in the first corner sealing element (10) forms an angle substantially equal to p.

7. Corner sealing system according to one of the preceding claims, wherein the corner sealing system is suitable for the waterproof sealing of an external corner-shaped structure in which p lies in the range between 45° to 135 °.

8. Method for applying the corner sealing system according to claims 5, 6, or 7 on an external corner-shaped structure on a building envelope, such as a roof or facade, comprising the following steps: step a), determining the angle p and choosing a corner sealing system suitable for angle P; step b). removing the foil (17) of the one sub-section (11 a);step c). positioning the foil (17) of the one sub-section (11a) on the flat surface (100) in the bend of the corner-shaped structure, marking the outer circumference of the said foil (17) on the flat surface (100) and removing the said foil (17) from the flat surface (100); step d). positioning the one sub-section (11 a) of the first corner sealing element (10) with the installation side on the marked position on the flat surface; step e). removing the foil (17) of the remaining second section (14) and sub-sections (11 b;11 c) and positioning the remaining sub-sections (11 b;11c) and second section (14) with the installation side on the flat surface (100) and over the eaves angles; step f). removing the foil (17) of the third section (12) and positioning the third section (12) with the installation side against the first flank (104); step g). removing the foil (17) of the fourth section (13) and positioning the fourth section (13) with the installation side against the second flank (105); step h). removing the foil (17) of the second corner sealing element (20) and positioning the second corner sealing element (20) with the installation side over the first corner sealing element (10).

9. Method according to claim 8 in combination with the corner sealing system according to claim 2, wherein the eaves angles a lie between approximately 25° < a < approximately 75° and step h) comprises the following sub-step: step h-1). removing the foil (17) of the fifth section (21 ) and sixth section (22) and positioning the fifth section (21 ) with the point downwards in the corner (102) and the sixth section (22) with the installation side against the first flank (104) and against the second flank (105).

10. The method according to claim 8 in combination with the corner sealing system according to claim 3, wherein the eaves angles a lie between approximately 75° < a < approximately 90° and step h) comprises the following sub-step: step h-2). removing the foil (17) of the sixth section (22) and positioning the sixth section (22) downwards and the fifth section (21 ) with the installation side against the first flank (104) and against the second flank (105).11 . Method according to claim 9 or 10, wherein the method comprises the further step: step i). cutting the part of the fifth section (21) or sixth section (22) of the second corner sealing element (20) protruding above the structure up to a top side of the corner (102) and positioning the cut-in parts against the top side and / or rear side of the structure.

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