Roof window, kit with covering assembly and method for installing a roof window

Abstract

A roof window (1) comprising a frame (2), a sash (3) carrying a pane (4), wherein the frame (2) comprises an interface unit (8) extending along a length direction (L) of at least one frame member (21, 22, 23, 24). At least one waterproofing member (1011, 1012, 1013, 1014) comprises a flange (1017) inserted into a waterproofing receiving groove (85) in the interface unit (8) in a direction parallel to a frame plane (F), said waterproofing receiving groove (85) extending along the length direction (L) of the frame member (21, 22, 23, 24). One or more protrusions (85a) for engaging with the flange (1017) are provided in the waterproofing receiving groove and extend in the length direction (L) and are made by co-extrusion with one or more portions (80, 86, 88) of the interface unit (8) delimiting the waterproofing receiving groove. A method for installing a roof window is also disclosed.

Description

Technical Field

[0001] The present invention relates to a roof window configured for installation in a roof structure comprising roofing material, the roof window comprising a frame and a sash supporting a window pane, wherein the frame comprises a plurality of frame members that together define a frame opening and a frame plane, and each frame member extends in a length direction, wherein the frame includes an interface unit extending in the length direction of at least one frame member, and wherein the interface unit includes a waterproof receiving groove configured to receive a flange of at least one waterproof member via the groove opening by insertion in a direction parallel to the frame plane, the waterproof receiving groove extending in the length direction of the frame member. Background Technology

[0002] When windows are installed in the roof structure of a building, an opening needs to be created within the roof structure, and the weatherproofing of the building, otherwise provided by the roof structure, needs to be re-established. For this purpose, the joint between the roof window and the roof structure is covered by a covering assembly that includes waterproofing and cladding components. To achieve the best possible weatherproofing, it is essential that the covering assembly is properly installed and subsequently held in place, even during periods of high winds and under the influence of large temperature variations.

[0003] Traditionally, waterproofing members are L-shaped, having a first leg extending upwards along the outer side of the frame away from the roof structure and a second leg extending outwards onto the roof structure away from the frame. Such waterproofing members are installed by arranging them close to the frame of the roof window and then lowering them to contact the roof structure, i.e., in a direction perpendicular to the plane of the frame. This requires the roof window frame to protrude sufficiently above the roof structure to provide a surface for the first leg to engage with, and requires the roof structure to provide a supporting surface for the second leg, such that the waterproofing member terminates in the desired position relative to the frame.

[0004] It has also been attempted to provide waterproof members with flanges that engage with waterproof receiving grooves in interface units directly disposed in or on the frame members. This can, for example, allow for a shorter first leg and can help ensure that the second leg is at the desired height relative to the frame plane. After installation, the engagement between the flange and the waterproof receiving groove can also help prevent any substantial movement of the waterproof member in the height direction, i.e., in the direction perpendicular to the frame plane, and prevent the waterproof member from rotating about an axis extending parallel to the frame plane and perpendicular to the length axis. With prior art waterproof members, if the supporting surface is insufficient and pressure is applied to the second leg of the waterproof member, for example, during maintenance or repair work on the roof structure or due to heavy snow or strong winds, rotation of the waterproof member about an axis extending parallel to the frame plane and perpendicular to the length axis may occur, and it may result in a looseness due to gaps formed between the waterproof members.

[0005] However, proper installation of the roofing components remains challenging, especially when roof windows are installed deep within the roof structure, and incorrect connections between the roof windows and the roofing components can lead to water infiltration and serious damage to the roof structure. Summary of the Invention

[0006] Therefore, in this context, the object of the present invention is to provide a roof window configured for improved connection with a covering assembly and an improved method for installing the roof window.

[0007] This and other objectives are achieved by a roof window of the type mentioned in the introduction, characterized in that one or more protrusions for engagement with a flange are provided in a waterproof receiving groove, and the protrusions are formed by co-extrusion with one or more portions of the waterproof receiving groove defining the interface unit.

[0008] One or more protrusions located in the waterproof receiving recess can abut against the flange for sealing, thereby contributing to the watertightness of the connection between the roof window and the covering assembly. Alternatively or additionally, the protrusions can provide friction against the flange, thereby hindering or preventing relative movement and helping to hold the waterproof component in place once installed. This eliminates the need to secure the waterproof component to the frame once installed, for example, by using nails or spikes.

[0009] In the following text, reference will be made primarily to embodiments having more than one protrusion; however, it should be understood that a single protrusion may be sufficient in principle. Similarly, whenever a single flange or a single waterproofing member is mentioned, it should be understood that more may be referred to unless otherwise stated.

[0010] The protrusion can take the form, for example, a lip extending along the entire length of the waterproof receiving groove, but it can also be a partial or brush-like protrusion. It is currently considered advantageous for the protrusion to extend along its length.

[0011] The protrusions are preferably made of a material that allows them to yield when engaged with the flange, preferably of an elastic material, while the portions defining the waterproof receiving groove are preferably made of a dimensionally stable material that allows them to maintain their shape during flange insertion.

[0012] A waterproof receiving recess typically has an overall cross-sectional shape perpendicular to the length of a rectangle, defined by an upper wall, a lower wall, and side walls forming the closed end opposite the recess opening. However, it should be understood that a waterproof receiving recess may also have rounded ends or be partially open at the ends, and the upper and lower walls need not be parallel or straight. Here and below, the indications “upper” and “lower” refer to the relative position of the roof window in its installed state. This also applies to any other indications of relative direction or position given below.

[0013] The protrusions are formed by co-extruding one or more portions of the interface unit's defining waterproof receiving groove, creating a coherent structure, preferably an integral structure, thereby ensuring that the protrusions are not misaligned, lost, or missing, which may be the case if separate sealing gaskets are used.

[0014] In one embodiment, the protrusion is made of a material with a Shore A hardness of 20A to 95A, preferably 35A to 87A. This provides a good balance between easy insertion of the flange and reliable retention of the flange.

[0015] Currently, it is considered advantageous that the flange can be inserted by hand without tools, and care must be taken to ensure that the resistance during insertion does not cause deformation of the waterproof component. Therefore, when selecting the material and size for the protrusion, the strength of the material used for the waterproof component must be considered. Factors such as the number of protrusions, their size, their location, and the friction between the materials used for the waterproof component and the protrusions can also be considered.

[0016] In one implementation, each protrusion extends beyond half the height of the waterproof receiving groove measured perpendicular to the frame plane.

[0017] Thermoplastic elastomers (TPEs) are currently considered advantageous for protrusions, and it is also advantageous for the portion defining the waterproof receiving groove of the interface unit to be made of polypropylene (PP) blended with glass fibers. The glass fiber content can be, for example, 15% by weight of the total material, making polypropylene account for 85% by weight of the total material. Experiments have shown that the combination of TPE and PP is suitable for co-extrusion, but other combinations are also possible. In particular, other polymers can be considered, and it is currently considered promising to use polyvinyl chloride (PVC) blended with different amounts or types of additives, such as softeners or foaming agents, to achieve different properties for the protrusion and the portion defining the waterproof receiving groove. Metals, such as aluminum, can also be used for the portion defining the waterproof receiving groove.

[0018] The protrusions can be arranged such that they are positioned inside the waterproof receiving groove above, below, or both of the flange. In one embodiment, at least three protrusions are present, and one or more protrusions extend from each of two opposite sides of the waterproof receiving groove, such as from the upper and lower walls defining the waterproof receiving groove. In this way, the protrusions engage with the flange from both sides, and the three contact points provide stable support for the waterproof member.

[0019] If the protrusion is made of an elastic material, the protrusion on either side can yield to varying degrees, thereby potentially compensating for slight displacement of the flange in the direction perpendicular to the frame plane during insertion and / or in the installed state, for example, due to thermal expansion or wind loads. The elastic protrusion can also help guide or move the flange and thus guide or move the waterproofing component to the desired position.

[0020] At least one protrusion may have a tapered cross-sectional shape with a smaller dimension at the free edge, i.e., a larger dimension at the portion where it attaches to the defining waterproof receiving groove. This makes the protrusion more resistant to bending at the attachment portion to the defining waterproof receiving groove than at the free edge, and therefore, the outermost portion of the protrusion closest to the free edge will yield the most during flange insertion.

[0021] In one embodiment, at least one protrusion is inclined in a direction away from the recess opening, i.e., not perpendicular to the frame plane, thereby facilitating and / or guiding the insertion of the flange. In another embodiment, several protrusions are inclined in a direction away from the recess opening, and the inclination decreases with distance from the recess opening. The innermost protrusion closest to the end of the waterproof receiving recess may not have this inclination and therefore extends perpendicular to the frame plane.

[0022] The total thickness of the flanges inserted into the waterproof receiving recess, possibly including the section of the steering track, is preferably less than 50% and more preferably less than 25% of the height of the waterproof receiving recess as measured perpendicular to the frame plane. The thickness can depend on the material used for the waterproof component and the number of layers of material inserted into the waterproof receiving recess. Typical materials for the waterproof component are aluminum with layer thicknesses of 0.4 mm to 0.7 mm, resulting in a total thickness of 1.2 mm to 2.1 mm if three flanges overlap. In some cases, one or more flanges may also include folded material, potentially enclosing another element. For the percentages given above, these dimensions would mean that the waterproof receiving recess would advantageously have a height of 2.5 mm to 10 mm; however, for ease of insertion of the waterproof component, it is currently preferred that the waterproof receiving recess have a height of at least 4 mm, preferably at least 5 mm, and more preferably at least 6 mm in the direction perpendicular to the frame plane. Heights of up to 15 mm are currently envisioned for the waterproof receiving recess.

[0023] The interface unit may also include one or more sealing lips, which are preferably made by co-extrusion with one or more portions of the interface unit and / or made of the same material as the protrusion.

[0024] In a second aspect of the invention, this objective is achieved by a kit comprising a roof window as described above and a covering assembly comprising a plurality of waterproof members configured to cover the joint between the frame and the roof structure, wherein at least one waterproof member comprises a flange configured to be inserted into a waterproof receiving groove in a direction parallel to the plane of the frame.

[0025] To facilitate the installation of the waterproof component, the flange may include a mark indicating the expected insertion depth of the flange into the waterproof receiving recess. During installation, displacement of the waterproof component continues until the flange is inserted so deeply into the waterproof receiving recess that the mark reaches or is obscured by the interface unit. The mark may be, for example, a printed indication on the flange, but may also take the form of a perforation on the flange. Perforations can have the added advantage of reducing heat transfer via the flange. A click function providing audio and / or haptic feedback may also be provided once proper flange insertion has been achieved.

[0026] In one embodiment, at least one waterproofing member is a top waterproofing member, the flange of which extends into a waterproof receiving groove of the top element of the interface unit, and wherein the top waterproofing member includes corner sections at one or both ends as viewed along its length, the corner sections extending along the side frame members of the frame in the installed state. Such top waterproofing members without flanges are known in the prior art and can generally be described as having an inverted U-shape surrounding the upper portion of the roof window in the installed state, the upper portion referring to the uppermost portion when viewed in the direction of inclination of the roof structure. The advantage of such a top waterproofing member is that there are no joints between the waterproofing members at the upper corner of the roof window, and the corner sections ensure that the top waterproofing member is correctly installed in the lateral direction. Since a flange is now also provided, the top waterproofing member is further held in place in the height direction, thus further facilitating installation as described above.

[0027] To further facilitate installation and retain the top waterproofing member in place once installed, the corner section may include a corner flange extending into a waterproof receiving groove in the side element of the interface unit. As the top waterproofing member moves toward the top frame member, the corner flange is inserted into the waterproof receiving groove of the side element of the interface unit by displacement perpendicular to the length of the top waterproofing member. This helps prevent the top waterproofing member from rotating about its length, thereby facilitating close contact with the side waterproofing members arranged below it along the slope of the roof structure, and potentially also with the roofing material or underroof arranged above it.

[0028] The type of top waterproofing component described above can be made by deep drawing, thus eliminating the need for joints in the top waterproofing component itself, thereby further reducing the risk of leakage.

[0029] The considerations made for the top waterproofing component also apply to the bottom waterproofing component.

[0030] In a third aspect of the invention, this objective is achieved by a method for installing a roof window in a roof structure comprising roofing material, the roof window comprising a frame, window sashes carrying window panes, and the frame comprising a plurality of frame members that together define a frame opening and a frame plane and each extend along a length direction, wherein the method comprises the following steps:

[0031] A) Place the roof windows in the openings in the roof structure.

[0032] B) Arrange multiple waterproof components of the covering assembly such that the waterproof components cover the joint between the roof window frame and the roof structure.

[0033] Its features are,

[0034] During step B), by displacing the waterproof component in a direction parallel to the frame plane, the flange of at least one waterproof component is inserted into a waterproof receiving groove in an interface unit on the frame, the interface unit and the waterproof receiving groove extending along the length of the frame component.

[0035] The embodiments and advantages described with reference to one aspect of the invention also apply to other aspects of the invention, and vice versa. To avoid undue repetition, they are not described with reference to every aspect. Attached Figure Description

[0036] In the following description, embodiments of the invention will be described with reference to the schematic drawings, in which:

[0037] Figure 1 It is a 3D view of a roof window with covering components.

[0038] Figure 2 It is a perspective view of a roof window installed in the roof structure, showing the installation of the bottom waterproofing component.

[0039] Figure 3 Corresponding to Figure 2 However, it shows the subsequent installation of the side waterproofing components.

[0040] Figure 4 This is a perspective view showing further stages of the installation of the side waterproofing components.

[0041] Figure 5 This is a cross-sectional view showing the right-hand waterproof component in its installed state.

[0042] Figure 6 Corresponding to Figure 3 However, it shows the subsequent installation of the top waterproofing component.

[0043] Figure 7 This is a perspective view showing further stages of the installation of the top waterproofing component.

[0044] Figure 8 It is along Figure 1 A cross-sectional view taken from line VIII-VIII in the diagram.

[0045] Figure 9 It is along Figure 1 The cross-sectional view taken by line IX-IX in the diagram.

[0046] Figure 10 Corresponding to Figure 8 However, different implementation methods are shown in the perspective view.

[0047] Figure 11 It is a 3D diagram of the interface unit, and

[0048] Figure 12 This is the end view of the interface unit. Detailed Implementation

[0049] First refer to Figure 1 The roof window 1 is shown with a covering assembly 10, wherein the right-hand side of the top waterproofing member 1011 is shown in a delivery state before being adapted to the shape of the roofing material 112 used with the roof window 1, as will be explained later. The roof window 1 is shown in a sloping position because it is intended to be installed in the sloping roof structure 11.

[0050] In addition to the top waterproofing component 1011, the covering assembly includes multiple side waterproofing components 1012, 1013, a bottom waterproofing component 1014, and multiple covering components 1021, 1022, 1023, 1024, each of which covers a portion of the window sash 3 that supports the window pane 4.

[0051] Roof window 1 includes a frame (in) Figure 1 (Not visible in the middle), and the top waterproofing member 1011, the side waterproofing members 1012, 1013 and the bottom waterproofing member 1014 extend along the top member, the side member and the frame member in the respective length direction L. The frame members 21, 22, 23 and 24 together define the frame opening and the frame plane F covered by the window pane 4.

[0052] exist Figure 1 In one embodiment, the top waterproofing member 1011 includes a corner segment 1011a at each end, the corner segment extending along one side of the roof window 1 and overlapping with the waterproofing members 1012 and 1013. Therefore, the top waterproofing member 1011 can be described as having an inverted U-shaped shape that surrounds the upper portion of the roof window 1 when installed in a sloping roof structure, i.e., the uppermost portion when viewed along the sloping direction of the roof structure (see also...). Figure 2 , Figure 3 and Figure 6 ).

[0053] The covering components 1021, 1022, 1023, and 1024 of the covering assembly 10 can be pre-installed on the roof window 1, or installed after the waterproof components 1011, 1012, 1013, and 1014 are installed. This is not essential to the present invention and will therefore not be described in further detail here.

[0054] The installation of waterproof components 1011, 1012, 1013, and 1014 begins with the installation of the bottom waterproof component 1014, and as follows: Figure 2As shown, the bottom waterproof component 1014 is displaced along a direction parallel to the frame plane F and perpendicular to the length direction L of the bottom frame component 24.

[0055] Subsequently, the side waterproof components 1012 and 1013, as Figure 3 The installation shown is accomplished by displacement in a similar manner. In the illustrated embodiment, several side waterproofing members 1012, 1013 are used on each side of the roof window 1; however, it should be understood that the invention is also applicable to roof windows in which the covering assembly 10 comprises only two side waterproofing members, one on each side of the roof window 1.

[0056] Figure 3 The side waterproofing members 1012 and 1013 shown are initially installed in the following state: in this state, the outer sections 1012o and 1013o configured to rest on the roof structure 11 are in an upright position, and then the outer sections 1012o and 1013o are as follows: Figure 4 As shown, it folds downwards onto the roofing material 112, ultimately having Figure 5 The shape shown is illustrated. This embodiment is particularly well-suited for use with flat roofing materials, such as slate, while waterproofing components used with corrugated roofing materials, such as tiles, typically protrude below the roofing material and are therefore usually installed without this downward folding step. However, downward folding can also be used to adapt the shape of the side waterproofing components to the shape of the roof structure supporting the corrugated roofing material.

[0057] like Figure 5 As can be seen, the flange 1017 on the side waterproof member 1012 is inserted into the waterproof receiving groove 85 in the interface unit 8 of the frame 2, and it should be understood that both the interface unit 8 and the waterproof receiving groove 85 extend in the longitudinal direction L of the side frame member 22. Inside the waterproof receiving groove 85, the resilient protrusion 85a engages with the side of the flange 1017, thereby helping to hold the flange 1017 in place within the waterproof receiving groove 85. In addition to providing friction against the flange 1017, the protrusion 85a also serves a sealing function. Figure 11 This type of interface unit is shown in more detail in the figure.

[0058] Now go to Figure 6 The installation of the top waterproof component 1011 is shown. As can be seen, the top waterproof component 1011 is aligned with the reference... Figure 2 The bottom waterproof component 1014 described in the description is installed in the same manner as described, only shifted downwards rather than upwards, as seen in the tilt direction I of the roof structure 11.

[0059] like Figure 7 As shown, the corner segment 1011a then folds downwards onto the roofing material 112, as referenced. Figure 3 The external section of the side waterproofing component is described. Figure 7 In the image, folding is shown as being done by hand, but folding can also be done using methods such as... Figure 3 The tools shown are used to accomplish this.

[0060] like Figure 5 As best seen in the image, the side waterproofing components 1012, 1013 include a groove 1012g extending along the length direction L, and see also... Figure 6 and Figure 7 Similar grooves 1011g are present in the top waterproofing member 1011 of each corner segment defining the corner segment 1011a. In the installed state, these grooves 1011g, 1012g extend continuously to each other and allow water to drain downwards along the side of the roof window 1.

[0061] Still referencing Figure 8 The displacement of the top waterproof component 1011 caused the flange 1017 to also insert. Figure 5 The top element 81 of the interface unit 8 shown is located in the same roof window 1 shown on the side. Figure 9 The comparison shows that the top element 81 of the interface unit 8 is slightly different from the side element 82 of the interface unit 8, but both have the same overall structure in which the waterproof receiving groove 85 receives the flange 1017.

[0062] The waterproof receiving groove 85 in the side element 82 of the interface unit 8 is slightly higher than the waterproof receiving groove 85 in the top element 81. This allows the side waterproof members 1012 and 1013 to overlap, as... Figure 1 As shown, and also allowing the corner flange 1017a on the corner segment 1011a to extend into the waterproof receiving groove 85 of the side element 82 of the interface unit 8, which overlaps with the flange of the side waterproof member, as shown. Figure 9 The dotted line 1011 indicates this.

[0063] Although not shown, it should be understood that the bottom waterproof member 1014 may also include a flange inserted into the waterproof receiving groove 85 in the interface unit 8, as described above with reference to the top waterproof member and the side waterproof members 1012, 1013, and the bottom waterproof member 1014 may also have a corner flange 1017a as described with respect to the top waterproof member 1011.

[0064] It should also be understood that although the accompanying drawings only show an embodiment in which the waterproof receiving groove 85 is formed in the interface unit 8 of the frame 2, the flange 1017 and the corner flange 1017a can also be inserted into the waterproof receiving groove in, for example, a wooden frame member or a frame member made by extrusion. If the waterproof receiving groove is made in a wooden frame, it may be advantageous for the protrusion to have a sealing function to prevent moisture from entering the waterproof receiving groove.

[0065] Figure 10 It corresponds to Figure 8 The cross-sectional view is shown, but only the top waterproofing member 1011 with the steering track 103 attached is shown, and only the top frame member 21 of the roof window and the interface unit 8 are shown. As can be seen, the steering track has a curved edge 1036 on the flange 1017 fitted onto the top waterproofing member, but it can also be the flange of the steering track fitted into the curved edge of the top waterproofing member. This results in a thickness of material inserted into the interface unit greater than that of the top waterproofing member. Figure 9 The thickness in Figure 9 Only two single-layer flanges overlap. Three layers of aluminum are used here, each with a thickness of 0.47 mm, resulting in a total thickness of 1.4 mm, and the total height of the waterproof receiving groove in the height direction H is 7 mm.

[0066] like Figure 10 As seen in the diagram, the insertion of flange 1017 and steering track 103 into the waterproof receiving groove 85 causes the protrusion 85 to be forced inward and bend toward the end wall 86 of the waterproof receiving groove. If the protrusion is long, the side of the protrusion will contact the flange. This will certainly also be the case in other embodiments, even if the protrusion is in... Figure 5 , Figure 8 and Figure 9 The diagram shows the structure in its undeformed state and will also apply to cases without steering rails or where the waterproofing components are implemented differently than those shown in the accompanying drawings.

[0067] Besides depending on the size of the protrusion, the degree of deformation of the protrusion will depend on the thickness of the inserted material, and therefore, the protrusion in Figure 10 Compared to them, in such Figure 5 and Figure 8 The example shown is where only a single layer is inserted, or in cases such as Figure 9 The deformation is greater when two layers are inserted as shown. Figure 10 In one embodiment, the total thickness of the inserted material constitutes 20% of the total height of the waterproof receiving groove 85, and each protrusion 85a extends beyond 63% of the total height of the waterproof receiving groove in an undeformed state.

[0068] Figure 11The text shows more details, such as... Figure 5 Interface unit 8 in the middle, and Figure 12 It shows Figure 10 The cross-section of the interface unit in the image is shown. In both cases, four protrusions 85a1, 85a2, 85a3, and 85a4 are shown in their undeformed state, and they extend beyond half the distance between the lower wall 80 and the upper wall 88, that is, beyond half the height of the waterproof receiving groove 85 measured perpendicular to the plane of the frame.

[0069] Two protrusions 85a1 and 85a3 are provided on the lower wall 80, and two protrusions 85a2 and 85a4 are provided on the upper wall 88, so that approximately the same pressure is provided from both sides when the flange of the waterproof component is inserted. Figure 12 In the middle, another protrusion 85a5 is provided on the upper wall. This protrusion 85a5 can also contact the waterproof component, but in Figure 10 In the embodiment shown, the protrusion is used to deflect water away from the waterproof receiving groove 85 and into the drainage groove 1038 of the steering track 103.

[0070] Figure 11 and Figure 12 In the interface unit 8, the two innermost protrusions 85a1 and 85a2 extend substantially parallel to each other and perpendicular to the upper and lower walls in the height direction H, while the outermost protrusions 85a3 to 85a5 are inclined at approximately the same angle away from the groove opening 85b. This facilitates flange insertion by gradually increasing insertion resistance. It is also conceivable that the angle of the protrusions can gradually decrease with distance from the groove opening 85b, such that the outermost protrusions have the maximum angle, and / or all protrusions can be inclined. Considerations regarding the angle of the protrusions apply to all embodiments of the interface unit.

[0071] exist Figure 11 In the diagram, protrusion 85a is shown as a lip extending along the entire length of the interface unit; however, it should be understood that protrusion 85a may be shorter, or even possibly have a tapered shape, making... Figure 12 Each of the protrusions shown presents a row of tapered protrusions. The following brush-like or comb-like structures are also possible: the brush-like or comb-like structure has continuous attachments to the upper wall 88 and the lower wall 80, with a series of brush-like or rod-like structures protruding from the upper wall and the lower wall.

[0072] like Figure 10 As shown, the protrusions 85a are preferably made of a material that allows them to yield when engaged with the flange, while the portions 80, 86, 88 that define the waterproof receiving groove 85 are advantageously made of a dimensionally stable material, such that they retain their shape during the insertion of the flange 1017.

[0073] In all the embodiments shown, the interface unit 8 also includes sealing lips 891, 892, and 893; for clarity of the drawings, these reference numerals are used only when necessary. Figure 11 and Figure 12 Added. Depending on the sealing requirements, these sealing lips may be made of the same material as the protrusion, or of one or more different materials. The sealing lips are not associated with the reception of the flange 1017 of the waterproof member in the waterproof receiving groove 85, and are therefore not necessary for the present invention.

[0074] exist Figure 12 In the diagram, the portions of the interface unit made of soft material, namely the protrusion 85a and the sealing lips 891, 892, and 893, are represented by a dotted pattern, while the portions 80, 86, 87, and 88 made of dimensionally stable material are represented by shaded lines. Even though they are made of different materials, they form a coherent, integral structure produced by co-extrusion. The protrusion 85a5 at the recess opening 85b and the sealing lip 892 above it are interconnected here by a thin layer 894 covering the upward wall 87 made of dimensionally stable material. (As can be seen from...) Figure 8 and Figure 9 As seen in the diagram, the upper wall 87 is the only part of the interface unit that will be exposed in the installed state, and by covering the upper wall 87, the dimensional stabilizer can be made of a wider range of materials, which may not necessarily be well resistant to weather-related effects such as exposure to ultraviolet radiation.

[0075] Interconnecting the protrusion 85a5 and the sealing lip 892 can further help reduce the risk of them loosening, for example, due to mechanical action.

[0076] The components of the roof window 1 are easy to disassemble, and each component can, in principle, be reused, recycled, or the materials can be recycled for other uses through appropriate environmentally responsible treatment.

[0077] List of reference numerals

[0078] 1. Roof window

[0079] 10 Coverage Components

[0080] 1011 Top Waterproofing Components

[0081] 1011a Corner section

[0082] 1011g groove

[0083] 1012 Side waterproofing components

[0084] 1012g groove

[0085] 1012o The outer side of the side waterproofing component

[0086] 1013 Side waterproofing components

[0087] 1013o The outer side of the side waterproofing component

[0088] 1014 Bottom waterproof component

[0089] 1017 Flange

[0090] 1017a Corner flange

[0091] 1017i mark

[0092] 1021 Encasing Components

[0093] 1022 Encasing Components

[0094] 1023 Encasing Components

[0095] 1024 Encased Components

[0096] 11 Roof Structure

[0097] 112 Roofing Materials

[0098] 2 Framework

[0099] 200 frame opening

[0100] 21 Top frame components

[0101] 22 Side frame components

[0102] 23 Side frame components

[0103] 24 Bottom frame components

[0104] 3 Window sashes

[0105] 4. Window panes

[0106] 8 Interface Units

[0107] 80 lower wall

[0108] 801 Anchorage Section

[0109] Top element of interface unit 81

[0110] 82 Side components of the interface unit

[0111] 85 Waterproof receiving groove

[0112] 85a Protrusion

[0113] 85b Groove opening

[0114] 86 end wall

[0115] 88 upper wall

[0116] 891 Inner sealing lip edge

[0117] 892 Outer sealing lip edge

[0118] 892 Additional inner sealing lip

[0119] F Frame Plane

[0120] I. Inclined direction

[0121] L (length direction)

Claims

1. A kit comprising a roof window (1) configured for installation in a roof structure (11) comprising a roof material (112) and a covering assembly (10), the roof window (1) comprising a frame (2) and a sash (3) carrying a pane (4), wherein, The frame (2) includes a plurality of frame members (21, 22, 23, 24) that together define a frame opening (200) and a frame plane (F), and each frame member extends along a length direction (L), wherein the frame (2) includes an interface unit (8) extending along the length direction (L) of at least one frame member (21, 22, 23, 24). The covering assembly (10) includes a plurality of waterproof components (1011, 1012, 1013, 1014) configured to cover the joint between the frame (2) and the roof structure (11), and The interface unit (8) includes a waterproof receiving groove (85) configured to receive the flange (1017) of at least one waterproof member (1011, 1012, 1013, 1014) via a groove opening by insertion in a direction parallel to the frame plane (F). The waterproof receiving groove (85) extends along the length direction (L) of the frame members (21, 22, 23, 24). The waterproof receiving groove (85) is provided with one or more protrusions (85a) for engaging with the flange (1017), the protrusions (85a) being made of a material with a Shore A hardness of 35 A to 87 A. The feature is that the protrusion (85a) is made by co-extrusion with one or more portions (80, 86, 88) of the interface unit (8) defining the waterproof receiving groove (85), and the flange (1017) of the at least one waterproof member (1011, 1012, 1013, 1014) includes a mark (1017i) indicating the expected insertion depth of the flange (1017) into the waterproof receiving groove (85), wherein the interface unit (8) including the protrusion (85a) constitutes an integral structure.

2. The kit of claim 1, wherein, The protrusion extends along the length direction (L).

3. The kit of claim 1 or 2, wherein, The protrusion (85a) is made of one or more thermoplastic elastomers (TPEs).

4. The kit according to claim 1 or 2, wherein, At least the portion (80, 86, 88) of the interface unit (8) that defines the waterproof receiving groove (85) is made of polypropylene (PP) mixed with glass fiber.

5. The kit according to claim 1 or 2, wherein, The protrusion extends beyond half the height of the waterproof receiving groove as measured perpendicular to the plane of the frame.

6. The kit according to claim 1 or 2, comprising at least three protrusions (85a), wherein, One or more protrusions (85a) extend from each of the two opposite sides of the waterproof receiving groove (85).

7. The kit according to claim 1 or 2, wherein, At least one protrusion (85a) has a tapered cross-sectional shape with a smaller dimension at the free edge.

8. The kit according to claim 1 or 2, wherein, At least one protrusion (85a) is inclined in a direction away from the groove opening of the waterproof receiving groove (85).

9. The kit according to claim 1 or 2, wherein, The total thickness of the flange (1017) inserted into the waterproof receiving groove (85) is less than 50% of the height of the waterproof receiving groove as measured perpendicular to the plane of the frame.

10. The kit according to claim 1 or 2, wherein, The at least one waterproof component (1011, 1012, 1013, 1014) is a top waterproof component (1011) whose flange (1017) extends into the waterproof receiving groove (85) of the top element (81) of the interface unit (8), and wherein the top waterproof component (1011) includes a corner segment (1011a) at one or both ends as observed along the length direction (L), the corner segment (1011a) extending along the side frame members (22, 23) of the frame (2) in the installed state.

11. The kit of claim 10, wherein, The corner section (1011a) includes a corner flange (1017a) in a waterproof receiving groove (85) extending into the side element (82) of the interface unit (8).

12. The kit according to claim 1 or 2 further includes a plurality of covering members (1021, 1022, 1023, 1024) covering a portion of the window sash (3).

13. The kit according to claim 4, wherein, The glass fiber accounts for 15% by weight.

14. The kit according to claim 9, wherein, The total thickness of the flange (1017) inserted into the waterproof receiving groove (85) is less than 25% of the height of the waterproof receiving groove as measured perpendicular to the plane of the frame.

15. A method for installing a roof window (1) in a roof structure (11) comprising roofing material (112), the roof window (1) comprising a frame (2) and a window sash (3) supporting a window pane (4), and the frame (2) comprising a plurality of frame members (21, 22, 23, 24) that together define a frame opening (200) and a frame plane (F) and each extend along a length direction (L), wherein, The method includes the following steps: A) Arrange the roof window (1) in an opening in the roof structure (11), B) Arranging a plurality of waterproofing components (1011, 1012, 1013, 1014) such that by displacing the waterproofing components in a direction parallel to the plane (F) of the frame, the flange (1017) of at least one waterproofing component (1011, 1012, 1013, 1014) is inserted through a groove opening (85b) of a waterproof receiving groove into the waterproof receiving groove (85) in the interface unit (8) on the frame (2) to cover the joint between the frame (2) and the roof structure (11) of the roof window (1), wherein both the interface unit (8) and the waterproof receiving groove (85) extend along the length direction (L) of the frame members (21, 22, 23, 24). Its features are, During step B), the flange (1017) engages with one or more protrusions (85a) of the waterproof receiving groove (85), the protrusions (85a) being formed by co-extrusion with portions (80, 86, 88) of the interface unit (8) defining the waterproof receiving groove (85), and the flange (1017) of the at least one waterproof member (1011, 1012, 1013, 1014) includes a mark (1017i), and the displacement of the waterproof member continues until the flange (1017) is inserted so deeply into the waterproof receiving groove (85) that the mark reaches or is blocked by the interface unit (8), wherein the interface unit (8) including the protrusions (85a) constitutes an integral structure, the protrusions (85a) being made of a material with a Shore A hardness of 35 A to 87 A.

16. The method according to claim 15, wherein, In order to insert the flange (1017) into the waterproof receiving groove (85), the waterproof component is displaced in a direction substantially perpendicular to the length direction (L).

17. The method according to claim 16, wherein, At least one of the waterproof components (1011, 1012, 1013, 1014) is a top waterproof component (1011), which includes a corner segment (1011a) at one or both ends as observed along the length direction (L), the corner segment (1011a) extending along the side frame members (22, 23) of the frame (2) in the installed state and including a corner flange (1017a) extending perpendicular to the length direction (L) of the top waterproof component (1011), wherein the corner flange (1017a) is inserted into a waterproof receiving groove (85) of the side element (82, 83) of the interface unit (8) by displacement perpendicular to the length direction (L) of the top waterproof component (1011).

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