Cover assembly

Abstract

A cover assembly (100) for at least one roof penetrating structure (1), such as a roof window, is disclosed. The cover assembly (100) comprises: a first cover member (10) comprising a pocket (106) extending along a pocket plane (P); and a second cover member (20) comprising an edge flange (202) extending in an edge flange plane (F) and having a bent edge (2051). The bent edge (2051) of the edge flange comprises a compression section (2053) closest to the bend line and a lip section (2054) extending from the compression section at an angle (A) with respect to the flange plane, and the pocket height (PH) is greater than the edge flange height (EH) at the compression section and less than the maximum edge flange height (EHL) at the lip section. A method for mounting a cover member of a cover assembly is also disclosed.

Description

TECHNICAL FIELD

[0001] The present invention relates to a cover assembly for at least one roof penetration, in particular a roof window, comprising a first cover member comprising a pocket section forming a pocket, the pocket extending along a pocket plane and having a pocket opening and a pocket end opposite the opening, wherein a pocket depth is measured along the pocket plane from the pocket opening to the pocket end, and wherein a pocket height is measured perpendicular to the pocket plane, and a second cover member comprising an edge flange extending in an edge flange plane and having a bent edge bent along a bend line, the bend line forming a free edge of the edge flange, wherein an edge flange height is measured perpendicular to the flange plane, and wherein an edge flange width is measured parallel to the flange plane, perpendicular and away from the bend line, the edge flange width being equal to or greater than the pocket depth, wherein each of the first cover member and the second cover member has an inner side configured to face an inner side of the roof window or roof structure in an installed state of the cover assembly and an outer side configured to face an outer side in the installed state.

[0002] Although reference will mainly be made to a roof window installed in a roof structure, it is to be understood that the cover assembly and method are not limited to use with a roof window, but can also be used with other types of roof penetration, such as a solar collector or solar panel. BACKGROUND

[0003] A roof window installed in a roof structure is usually provided with a weatherproofing member comprising a plurality of members, including a water-proofing member covering the joint between the roof window and the roof structure, a covering member covering the joint between the water-proofing member and the frame of the roof window, and possibly also a cladding member covering the outer side of the roof window. "Cover member" is used here as a generic name for all these members.

[0004] When interconnecting two cover members made of sheet material, such as sheet metal, the edge flange of one cover member can be inserted into a recess formed by a recess section on the other cover member, or a recess section on one cover member can hook onto the edge flange of the other cover member. These methods provide a simple and reliable interconnection, which can be fixed by fixing the two cover members to one or more other elements, such as to the frame of a roof window. Such fixing can allow the edge flange and the recess section to still move slightly relative to each other, thereby e.g. compensating for thermal expansion. If the recess formed by the recess section is deeper than the minimum overlap between the cover members required to provide sufficient weather protection, the interconnection of the edge flange and the recess section can also allow the cover members to be mounted in different mutual positions, e.g. thereby allowing them to be used in different mounting situations, where the roof window is mounted deeper or higher in the roof structure, or where the distance between the frame of the roof window and the roof material is different. The size of the overlap between the edge flange and the recess section will simply be adjusted to compensate for the different depths or distances.

[0005] Although the interconnection of such cover members is generally quite easy, experience shows that it is not always possible to insert the edge flange completely into the recess of the recess section, in particular a slit-shaped recess, where the height of the recess is small, which is often desired for design reasons or to leave space for other items. Furthermore, it can be difficult to separate the cover members from each other, in particular when the edge flange is provided with a bent edge to ensure a tight contact between the two cover members, as described in the applicant's co-pending patent application DK202370172.

[0006] In some mounting situations, e.g. in order to be able to fit a gutter-shaped cover assembly between roof windows mounted side by side, it is necessary that the edge flange is inserted completely into the recess. Not meeting this requirement can result in insufficient weather protection or in the cover assembly being discarded. Furthermore, with the increasing focus on reducing the environmental impact, the possibility of disassembly to facilitate recycling and / or to allow repair instead of replacement is becoming increasingly important. Invention content

[0007] Against this background, it is an object of the present invention to provide a cover assembly and a method for interconnecting cover members which allows for utilizing the full range of overlap between the edge flange and the recess section. Furthermore, it is desirable to provide a cover assembly and a method for interconnecting cover members which allows for easy disassembly.

[0008] These and other objects are achieved by a cover assembly of the type mentioned in the introduction, which is further characterized in that the bent edge of the edge flange comprises a pinch section closest to the bend line and a lip section extending at an angle from the pinch section relative to the flange plane, the recess height being greater than the edge flange height at the pinch section and less than the maximum edge flange height at the lip section.

[0009] As the pocket section of the cover member is typically formed by folding, roll forming, etc., the pocket end will typically have a rounded shape, and thus the pocket height will decrease at the innermost end of the pocket. This, in combination with the above-described desire to keep the pocket height low, has been found to cause difficulties that are sometimes experienced when trying to achieve full insertion of the edge flange in the pocket. The fact that some cover members are made with relatively high tolerances can contribute to this problem. These effects can be even more pronounced if the pocket is made by simply folding along a single bend line, instead of trying to achieve a rounded pocket end. With a pinch section, the edge flange height closest to the free edge is reduced compared to a bent edge without a pinch section, thus increasing the likelihood that the bent edge can be fully inserted in the pocket.

[0010] The pinch section can also require a smaller radius of curvature at the free edge, which can reduce the risk of the edge flange getting stuck, e.g. by capillary suction between the pocket end and the free edge.

[0011] The maximum edge flange height at the lip section can be at the edge of the lip section distal from the pinch section, but can also be located further towards the pinch section.

[0012] It is presently considered advantageous if the pocket height is at least twice the edge flange height at the pinch section, and / or the radius of curvature of the pocket end is at least twice the radius of curvature of the free edge. To reduce the radius of curvature of the free edge, the material of the edge flange can be deformed into a sharp edge at the free edge.

[0013] The height of the pocket can be reduced at the pocket opening to reduce the risk of water or dirt entering the pocket in the installed state. This reduced height should not be considered when determining the dimensions of the pinch section and the lip section relative to the pocket height.

[0014] The pinch section can be made, e.g., by compressing a portion of the bent edge, i.e., by first folding the outer edge of the edge flange and subsequently compressing the portion closest to the free edge. Alternatively, the pinch section and the lip section can be made by two subsequent folding operations, wherein the outer edge of the edge flange is first bent such that it extends substantially parallel to the edge flange plane, and wherein the lip section is then formed by bending a portion of the outer edge away from the edge flange plane. The lip section will typically extend at an angle of 5 to 30 degrees from the edge flange plane. An angle of less than 15 degrees is presently envisaged.

[0015] The dimensions of the compression section and the lip section can vary depending on, among other things, the overall dimensions of the cover member, the material used, the thickness of the material, and the dimensions of the pocket. It is presently considered advantageous if the compression section has a width, measured parallel to the edge flange plane and in a direction away from the bend line, of at least 3 mm, preferably at least 5 mm, and the lip section extends further away from the bend line by 7 mm, preferably at least 10 mm.

[0016] When the maximum edge flange height at the lip section is greater than the pocket height, the lip section will engage with the inner surface of the pocket, thereby pressing the edge flange against the opposite inner surface of the pocket as seen in the height direction. The close contact between the edge flange and the inner surface of the pocket can contribute to the weatherproof properties of the cover assembly, especially in case the lip section protrudes at the inner side of the second cover member and presses the edge flange against the inner surface of the pocket at the outer side of the first cover member. To further facilitate the close contact between the edge flange and the inner surface of the pocket, the lip section can be made of a resilient material. Sheet metal commonly used for cover members, such as aluminium, will have sufficient resilience to achieve this effect, which means that the entire second cover member can be made of the same material.

[0017] Nonetheless, the dimensions and resilience of the lip section should be such that the frictional resistance between the lip section and the inner surface of the pocket does not prevent or excessively hinder the installation of the cover assembly during insertion of the edge flange into the pocket.

[0018] In one embodiment, the first cover member further comprises an engagement section extending away from the pocket opening in a direction away from the pocket end along the pocket plane. The engagement section can for example be a bent edge configured for engagement with a bent edge of the second cover member. This can prevent unintentional separation of the first cover member and the second cover member and / or contribute to the weatherproof properties of the cover assembly. If the bent edge of the second cover member protrudes from the inner side, the bent edge of the first cover member should protrude from the outer side.

[0019] At least the edge flange is preferably made of sheet material, such as sheet metal commonly used for cover members, with aluminium, copper and stainless steel being the most common materials. However, other materials, such as polymers, can also be used, and both cover members can be covered in whole or in part with other materials, such as paint. In one embodiment, a friction-reducing coating is provided in the pocket and / or on the edge flange to facilitate the installation of the cover assembly.

[0020] Cover members made entirely of polymer will likely be manufactured by extrusion or moulding, and it will be understood that references to “bent edge”, “bent along”, “bend line”, etc. are to be understood as a bent shape, not necessarily a shape that needs to be achieved by a bending process. BRIEF DESCRIPTION OF DRAWINGS

[0021] In the following description, embodiments of the invention will be described with reference to the schematic drawings, in which:

[0022] Figure 1 is a cross-sectional view of a prior art cover assembly,

[0023] Figure 2 is a perspective view of a prior art cover assembly for a set of four roof windows,

[0024] Figure 3 is a cross-sectional view of a first cover member,

[0025] Figure 4 is a cross-sectional view of a second cover member,

[0026] Figure 5 is an enlarged view of the detail marked V in Figure 4

[0027] Figure 6 is a cross-sectional view of a cover member assembly comprising cover members in Figure 3 and Figure 4 in a narrow configuration,

[0028] Figure 7 is a cross-sectional view of the cover assembly in Figure 6 in an expanded configuration,

[0029] Figure 8 is a cross-sectional view of a first cover member and a second cover member,

[0030] Figure 9 is a cross-sectional view of two interconnectable cover assemblies,

[0031] Figure 10 is a cross-sectional view of a cover assembly arranged between two roof window frames and in engagement with the frame cover members,

[0032] Figure 11 is a perspective view of a roof structure with four roof penetrations during an installation step,

[0033] Figure 12 is a partial perspective view of the lower two roof penetration roof structure of Figure 9 during another installation step,

[0034] Figure 13A and Figure 13B are perspective views of a second cover member of a waterproofing member in an alternative embodiment,

[0035] Figure 14 are perspective views of a first cover member and a second cover member of a two-part waterproofing member during assembly,

[0036] ​Figure 15 is in an assembled state Figure 14 is a perspective view of a two-part flashing member of

[0037] Figure 16 is Figure 11 is a roof structure of Figure 15 is a perspective view of a two-part flashing member of

[0038] Figure 17A and Figure 17B is a partial perspective view showing the respective positions of the first and second cover members during adjustment of the mutual position in the installation step,

[0039] Figure 18 is Figure 16 is a partial perspective view of a roof structure of

[0040] Figure 19 is a partial side cross-sectional view showing a roof structure of Figure 16 in a further installation step, and

[0041] Figure 20A and Figure 20B is a partial perspective view of a flashing member in a further installation step. DETAILED DESCRIPTION

[0042] In the following, the same reference signs will be used for items having the same function, even if they can not be identical in structure. It is to be understood that a description given with reference to one such item also applies to the other items, and only the differences between the items will be described.

[0043] Reference is first made to Figure 1 shows a prior art cover assembly 100. The prior art cover assembly 100 comprises a first cover member 10 and a second cover member 20, each having two legs 101, 102, 201, 202 extending perpendicularly to each other such that the cover assembly has a channel shape. This cover assembly 100 can be used in place of any one of the channel-shaped flashing members 13, 16 used between roof penetration structures, here in the form of a roof window frame 1 in Figure 2 The first legs 101, 201 of the cover members 10, 20 will then extend along the outer side portions of the roof window frame, while the second legs 102, 202 forming the channel bottom will extend between the roof window frames parallel to the plane of the roof structure (not shown). Figure 1 The upwardly facing side portions in Figure 1the downwardly facing side constitutes an inner side facing the interior of the building in which the roof window is installed. Likewise, each of the first cover member 10 and the second cover member 20 has an inner side configured for facing the interior of the roof window or roof structure in the installed state of the cover assembly and an outer side configured for facing the exterior in the installed state.

[0044] In the shown embodiment, the first cover member 10 and the second cover member 20 are each formed as a generally longitudinally extending profile element having a length direction parallel to the inclination direction D of the roof structure in the installed condition to be described below and extending into Figure 1 the drawing plane in

[0045] In Figure 3 a first cover member 10 of the type shown in Figure 1 is shown in more detail. The first cover member 10 comprises a pocket section 104 closest to the first leg 101 and an engagement section 105 at the end of the second leg 102 furthest from the first leg.

[0046] The pocket section 104 comprises an inner portion 1021 and an outer portion 2022 forming a slit-shaped pocket 106 extending along a pocket plane P. The pocket has a pocket opening 1061 and a pocket end 1062 opposite the pocket opening and two inner surfaces 1063, 1064 extending between the pocket opening and the pocket end, which are formed by the inner portion 1021 and the outer portion 2022, respectively. The pocket depth PD is measured along the pocket plane from the pocket opening to the pocket end, and the pocket height PH is measured perpendicular to the pocket depth.

[0047] The engagement section 105 extends away from the opening 1061 in a direction away from the pocket end 1062 along the pocket plane P, having a width SW. The engagement section comprises a bent edge 1051 bent along a bend line 1052 forming a free edge of the second leg 104. The bent edge is configured for engaging a bent edge 2051 of an edge flange 202 of the second cover member 20, which constitutes a second leg of the second cover member and defines an edge flange extending in an edge flange plane F, as will be described in further detail below. Figure 1 In the assembled state of the cover assembly shown in Figure 1The bent edge 1051, 2051 shown in its undeformed state presses downwards towards the inner surface 1063 and the edge flange 202, respectively. Thus, in the assembled state, the bent edge 1051 of the first cover member will press against the inner side of the edge flange 202 and the bent edge 2051 of the second cover member will press against the inner surface 1063 of the pocket 106, both thus pressing the edge flange 202 towards the inner surface 1064 of the pocket 106.

[0048] In Figure 4 a second cover member 20 for a cover assembly according to the present invention is shown. It differs from the second cover member in Figure 1 by the design of the bent edge 2051, which is shown in detail in Figure 5 The bent edge 2051 here comprises a pinch section 2053 closest to the bend line 2052 and a lip section 2054 extending at an angle A from the pinch section relative to the flange plane F. The edge flange height EHC measured perpendicular to the flange plane F at the pinch section 2053 is less than the pocket height PH, and the maximum edge flange height EHL at the lip section 2054 is greater than the pocket height PH. The pocket end 1062 is indicated in Figure 5 by the dashed line around the end of the pinch section 2053, Figure 5 It is shown that the pocket height is about twice the edge flange height EH at the pinch section. In Figure 6 and Figure 7 the relative height can also be seen, where, Figure 4 The edge flange 202 of the second cover member in Figure 3 is shown inserted into the pocket 106 of the first cover member shown in

[0049] In the shown embodiment, there is a sharp bend between the pinch section 2053 and the lip section 2054. It should be understood that this is not necessarily the case, and the transition between the pinch section and the lip section can be more gradual.

[0050] The edge flange width EW of the edge flange 202 is measured parallel to the flange plane F, perpendicular and away from the bend line 2052. The edge flange width EW is equal to or greater than the pocket depth PD of the first cover member 10.

[0051] In Figure 5In the illustrated embodiment, the width CW of the clamping section 2053 is smaller than the width LW of the lip section, thus constituting less than half the total width BW of the bent edge. These dimensions can vary, but the width of the clamping section must be large enough to allow the second cover member 20 to be fully inserted into the recess 106 of the first cover member 10 and preferably also easily separated from the recess 106 of the first cover member 10. Similarly, the width LW of the lip section should be large enough to ensure that the maximum edge flange height EHL at the lip section is greater than the recess height PH. Therefore, the widths of the clamping section and the lip section will depend on the angle A of the lip section and the shape and size of the recess 106, also taking into account the tolerances allowed in the production of the cover member.

[0052] exist Figure 5 In the embodiment shown, the material used to manufacture the second cover member 20 has a sheet thickness of 0.06 mm, an edge flange height EHC of approximately 1.5 mm at the pressing section, a maximum edge flange height EHL of approximately 3 mm, a pressing section width CW of approximately 8 mm, and a lip section width LW of approximately 13 mm.

[0053] Turn now Figure 6 and Figure 7 ,include Figure 3 The cover component 10 and Figure 4 The cover member 20 in the middle is shown in both narrow and extended configurations.

[0054] exist Figure 6 In the narrow configuration, the edge flange 202 of the second cover member 20 is fully inserted into the recess 106 of the first cover member 10, such that the free edge of the edge flange at the bend line 2052 is located at the recess end 1062. To allow this, the edge flange width EW is greater than the recess depth PD. The radius of curvature at the recess end is approximately twice the radius of curvature at the free edge of the edge flange.

[0055] The lip portion 2054 of the edge flange is shown as protruding through the inner portion 1021 of the recess portion 104, but this is only to illustrate that the maximum edge flange height is greater than the recess height as described above. In reality, the lip portion will be pressed back by contact with the inner surface 1063 of the recess. This deformation is shown on the bent edge 1051 of the joint portion 105, which presses against the inner side of the edge flange 202.

[0056] exist Figure 7 In the unfolded configuration, the second cover member 20 has been separated from the first cover member 10 as follows: Figure 6This results in the lip section 2054 of the bent edge 2051 of the second cover member hooking into the bent edge 1051 of the engagement section 105 of the first cover member, preventing further relative movement of the cover members along the flange plane F. In the shown embodiment, the width BW of the bent edge 2051 of the second cover member is larger than the width SW of the engagement section 105. This means that also movement perpendicular to the flange plane F will be prevented, thereby preventing unintentional disassembly of the cover assembly 100. In the shown embodiment, the overlap between the edge flange 202 and the outer portion 1022 of the pocket section 104 has a width which corresponds approximately to the width CW of the pinch section of the bent edge 2051 of the second cover member 20, but other relative dimensions are possible as well.

[0057] In the shown embodiment, each of the cover members 10, 20 is made here by folding a single piece of sheet metal, such as aluminium or copper, but can also be made of a polymer and then possibly by extrusion or moulding. Extrusion or moulding can also be used to make the cover members from metal. If the first cover member 10 is made by extrusion or moulding, the pocket section 104 of the first cover member 10 will then comprise a single layer of material. Figure 3 The outer portion 1022 comprising two layers of material in the embodiment shown in

[0058] In Figure 8 and Figure 9 alternative embodiments of the cover assembly are shown.

[0059] In Figure 8 the first leg 201 of the second cover member 20 is significantly shorter than the first leg 101 of the first cover member 10. This cover assembly is very suitable for use as a side water protection member, such as those having reference number 11 in Figure 2 or as a bottom water protection member, such as those having reference number 6 in Figure 2 If the shorter first leg is instead located on the first cover member 10, it will also be very suitable for use as a top water protection member, such as those having reference number 2 in Figure 2 or as a bottom water protection member, such as those having reference number 6 in Figure 2 If the shorter first leg is instead located on the first cover member 10, it will also be very suitable for use as a top water protection member, such as those having reference number 2 in Figure 2 or as a bottom water protection member, such as those having reference number 6 in Figure 2 If the shorter first leg is instead located on the first cover member 10, it will also be very suitable for use as a top water protection member, such as those having reference number 2 in Figure 2

[0060] In Figure 9 the first leg 101’ of the first cover member 10 and the first leg 201’ of the second cover member 20 are both implemented as Figure 1 the second leg 202 of the second cover member shown in Figure 4 but can also be implemented as the second leg of the second cover member shown in Figure 3The first cover member 10. These four cover members 10, 20, 10', and 10" together form a grooved cover assembly with variable dimensions in both the width and height directions. This grooved cover assembly is ideally suited for use as an intermediate waterproofing component, such as in... Figure 2 The intermediate waterproofing members are indicated by reference numerals 13 and 16, and the grooved cover assembly will be able to compensate for both the distance difference between the roof window frames 1 and the difference in the installation depth of the roof window frames. The grooved cover assembly can be arranged in a narrow configuration between the two roof window frames and then unfolded until it contacts the two roof window frames. Similarly, the cover assembly can be arranged such that the horizontal portion of the additional cover member spans the top of the two roof window frames and then unfolds until the second leg 102 of the first cover member 10 and the second leg 202 of the second cover member 20 reach the roof structure between the two roof window frames.

[0061] Another embodiment of the cover assembly 100 is shown as arranged in Figure 10 Between the two roof window frames 1. The cover assembly and Figure 7 and Figure 9 The difference in the cover assembly is that the bent edge 1051 of the first cover member 10 is shorter and the first legs 101, 201 are provided with bent edges 1011, 2011.

[0062] The shorter bent edge 1051 of the first cover member 10 can reduce the pressure applied to the second leg 202 of the second cover member 20, which can facilitate the interconnection of the first cover member 10 and the second cover member 20.

[0063] The bent edges 1011 and 2011 of the first legs 101 and 201 bend outwards, protruding from the outer side of the first legs, and engage with the frame cover members 30 disposed on the roof window frame 1. Each frame cover member has a bent edge 3051 that bends inwards to the inner side of the frame cover member, and the bent edge 3051 abuts against the planar portion of the first leg. This means that if the cover assembly 100 from... Figure 10 As shown, when the position decreases, the bent edges 1011, 2011 and 3051 will hook together, thereby restricting relative movement. Furthermore, when... Figure 10 In the arrangement shown, a chamber 40 is formed between the bent edges. The chamber 40 can help protect against wind and rain by functioning as a labyrinth seal and a pressure relief chamber, thereby preventing air from being forced upwards under the frame cover member.

[0064] exist Figure 10 In the embodiment, the bent edges 1011 and 201 of the first legs 101 and 201 are aligned with... Figure 4the second cover member in the second roof penetration structure 1 b is implemented in the same way as the bent edge 2051 in the second cover member in the first roof penetration structure 1 a, i.e. as having a compression section and a lip section. This can facilitate the movement of the cover assembly 100 relative to the roof window frame member 100 and the frame cover member 30, but the bent edge 1011, 2011 can also be Figure 3 a simple bend on the engagement section 105 of the first cover member in the first roof penetration structure 1 a.

[0065] Turning now to Figures 11 to 20B , other aspects of the present inventive creation will be described in more detail with reference to a roof structure 7 comprising four roof penetration structures 1 a, 1 b, 1 c, 1 d. Elements having the same or similar function as elements in the embodiments described above have the same reference numerals.

[0066] In the following, reference will be made to a two-part waterproofing member / waterproofing assembly, but it will be understood that it can also be another type of cover assembly.

[0067] As seen in the inclined direction D, the two lowermost roof penetration structures 1 a, 1 b are each provided with a bottom waterproofing member 6a, 6b forming part of the waterproofing assembly.

[0068] Other components of the waterproofing assembly include a set of components of the type of two-part waterproofing member 100 described with reference to Figures 1 to 10 . Depending on the spacing between pairs of adjacent roof penetration structures 1 a, 1 b and 1 c, 1 d, respectively, in the width direction W, two different second cover members 20 and 20’ are selected, as shown in Figure 13A and Figure 13B .

[0069] As shown in Figure 14 , a first cover member 10 is provided. The first cover member 10 is formed with a first leg portion and a second leg portion forming a pocket (not shown in detail) therebetween, substantially as shown in Figure 3 and Figure 8 . Furthermore, the first cover member 10 comprises a first leg 101 (see Figure 19 ).

[0070] In order to further improve the installation conditions, the waterproofing assembly is provided with a retaining device. The retaining device can be temporary to provide temporary retention in the installation step, or form part of a permanent structure fixing the waterproofing assembly to the roof penetration structures or the roof structure.

[0071] The retaining device ensures that the cover members are positioned between adjacent roof penetration structures with the length direction of the waterproofing member parallel to the inclined direction.

[0072] The retaining device can be form-fitting or non-form-fitting.

[0073] The term "form-fitting engagement" (German: formschlüssig) shall be interpreted to include the following mechanical coupling of two originally separate components: wherein the design and geometry of the components prevent the coupling from being released unintentionally due to forces experienced by the components during use, which particularly includes a mechanical coupling wherein the mutually complementary shapes of the respective components fit together in the engaged position, and wherein intentional movement of at least one of the components away from the engaged position is required, which typically involves at least partial movement of one or both components in a direction that is angled relative to the intended movement. In other words, the term form-fitting engagement shall be understood as any form of form-locked coupling, wherein the shapes or geometries of the two components interlock with each other such that the two components create an engagement that prevents disengagement until intentional release by a user's active or conscious action.

[0074] In contrast thereto, "non-form-fitting engagement" (German: kraftschlüssig) relates to an engagement that only requires force in the intended direction of movement to obtain release. A non-exhaustive list of examples of non-form-fitting engagement devices includes frictional connections, magnetic connections, "soft" snap connections, etc., wherein the engagement between the components is achieved primarily by means of forces in tangential direction rather than normal direction.

[0075] The retaining device can be disposed on any cover member of the waterproof assembly.

[0076] The retaining device can comprise a substantially planar lug extending in a plane substantially parallel to any plane spanned by a portion of the cover member. The planar lug can be formed to extend in a plane spanned by the height direction H and the tilt direction D of the cover member.

[0077] Such one or more planar lugs can be formed to protrude from the cover member.

[0078] The shape of each planar lug can be arbitrarily chosen to comply with manufacturing, shipping or installation requirements.

[0079] Each planar lug can be foldable about a fold line substantially parallel to the height direction H or the tilt direction D.

[0080] In the embodiment shown in more detail in Figure 18 and Figure 19 , a substantially planar lug 614 is formed on the bottom waterproof member 6a of the first roof penetration structure 1a.

[0081] The planar lug 614 here has a trapezoidal shape and protrudes from the vertical flange of the bottom waterproof member 6a to extend in a plane spanned by the height direction H and the tilt direction D.

[0082] The planar lug 614 is configured to be foldable about a fold line substantially parallel to the inclination direction D to abut, in the installed condition of the waterproof assembly, a first leg 101 of the first cover member 10 of the waterproof member 100.

[0083] Therefore, in the installed condition, the trapezoidal lug 614 assumes a folded-back position substantially parallel to its original plane and acts as a force-locking engagement device by means of friction to prevent the waterproof member 100 from sliding along the inclined roof.

[0084] The engagement can be reinforced by manually gripping the trapezoidal lug 614, possibly by means of suitable tools.

[0085] In the embodiment shown in greater detail in Figure 20A and Figure 20B , on the first leg 101 of the first cover member 10 of the waterproof member 100 a substantially planar lug 1015 is formed.

[0086] The planar lug 1015 has a rectangular shape and projects from the first leg 101 to extend in a plane spanned by the height direction H and the inclination direction D.

[0087] The planar lug 1015 is configured to be foldable about a fold line substantially parallel to the height direction H to a position at right angles to its original plane to abut a portion of the first roof penetration structure la, typically at a corner of the fixed frame of the roof window or at a portion of any insulating frame mounted to the frame. In this way, the rectangular lug 1015 provides a form-locking engagement with the first roof penetration structure la, thus further improving the retention of the waterproof member 100.

[0088] List of reference signs

[0089] 1 roof window frame

[0090] la roof penetration structure

[0091] lb roof penetration structure

[0092] lc roof penetration structure

[0093] ld roof penetration structure

[0094] 2 top waterproof member

[0095] 6 bottom waterproof member

[0096] 6a bottom waterproof member

[0097] 6b bottom waterproof member

[0098] 614 trapezoidal lug

[0099] 10 first cover member

[0100] 101 first leg

[0101] 101 1 bent edge

[0102] 101 5 rectangular lug

[0103] 102 second leg

[0104] 102 1 inner portion

[0105] 102 2 outer portion

[0106] 104 pocket section

[0107] 105 engagement section

[0108] 105 1 bent edge

[0109] 105 2 bent line

[0110] 106 pocket

[0111] 106 1 pocket opening

[0112] 106 2 pocket end

[0113] 106 3 inner surface

[0114] 106 4 inner surface

[0115] 10' additional cover member

[0116] 10" additional cover member

[0117] 100 cover assembly

[0118] 11 side water barrier member

[0119] 13 channel-shaped water barrier member

[0120] 16 channel-shaped water barrier member

[0121] 20 second cover member

[0122] 20' second cover member (alternative embodiment)

[0123] 201 first leg

[0124] 201 1 bent edge

[0125] 202 second leg / edge flange

[0126] 205 1 bent edge

[0127] 205 2 bent line

[0128] 205 3 pinch section

[0129] 2054 lip segment

[0130] 30 frame cover member

[0131] 3051 bent edge

[0132] 40 chamber

[0133] 7 roof structure

[0134] A angle of lip segment

[0135] BW width of bent edge

[0136] CW width of compression segment

[0137] D direction of tilt

[0138] EH edge flange height

[0139] EHC edge flange height at compression segment

[0140] EHL maximum edge flange height

[0141] EW edge flange width

[0142] F edge flange plane

[0143] H direction of height

[0144] LW lip width

[0145] P pocket plane

[0146] PD pocket depth

[0147] PH pocket height

[0148] SW joint segment width

[0149] W direction of width

Claims

1. A cover assembly for at least one roof penetration structure, in particular a roof window, comprising a first cover member comprising a pocket section forming a pocket, the pocket extending along a pocket plane and having a pocket opening and a pocket end opposite the opening, wherein a pocket depth is measured along the pocket plane from the pocket opening to the pocket end, and wherein a pocket height is measured perpendicular to the pocket plane, and a second cover member comprising an edge flange extending in an edge flange plane and having a bent edge bent along a bend line, the bend line forming a free edge of the edge flange, wherein an edge flange height is measured perpendicular to the flange plane, and wherein an edge flange width is measured parallel to the flange plane, perpendicular and away from the bend line, the edge flange width being equal to or greater than the pocket depth, wherein each of the first cover member and the second cover member has an inner side configured for facing an inner side of a roof window or roof structure in an installed state of the cover assembly and an outer side configured for facing an outer side in the installed state, characterized in that the bent edge of the edge flange comprises a pinch section closest to the bend line and a lip section extending from the pinch section at an angle with respect to the flange plane, the pocket height being greater than the edge flange height at the pinch section and less than a maximum edge flange height at the lip section.

2. The cap assembly of claim 1, wherein the maximum edge flange height at the lip section is present at an edge side of the lip section away from the pinch section.

3. The cap assembly of claim 1 or 2, wherein, the pocket height is at least twice the edge flange height at the pinch section, and / or wherein a radius of curvature of the pocket end is at least twice a radius of curvature of the free edge.

4. The cap assembly of claim 1, wherein the lip section protrudes at the inner side of the second cover member.

5. The cap assembly of claim 1, wherein the pinch section is made by compression of a portion of the bent edge.

6. The cap assembly of claim 1, wherein at least the lip section is made of an elastic material.

7. The cap assembly of claim 6, wherein, the lip section is made of aluminum.

8. The cap assembly of claim 1, wherein, the first cover member further comprises an engagement section extending away from the pocket opening in a direction away from the pocket end along the pocket plane.

9. The cap assembly of claim 1, wherein, at least the edge flange is made of a sheet material.

10. The cap assembly of claim 9, wherein, the edge flange is made of a metal sheet.

11. The cap assembly of claim 1, wherein, at least one cover member is made by folding a sheet material.

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