EP2578765B1

EP2578765B1 - A window for installation in a roof structure and a mounting bracket for use with the window

Info

Publication number: EP2578765B1
Application number: EP12187172.7A
Authority: EP
Inventors: Thomas Nør Nielsen
Original assignee: VKR Holding AS
Current assignee: VKR Holding AS
Priority date: 2011-10-04
Filing date: 2012-10-04
Publication date: 2022-06-29
Anticipated expiration: 2032-10-04
Also published as: PL2578765T3; EP2578765A1

Description

The present invention relates to a mounting bracket for a window for installation in a roof structure and to the use of such a mounting bracket.
A window with a mounting bracket of this kind, is known from EP 1042569 B1 .
Windows of this known type are usually delivered at the installation site with associated mounting brackets as well as an associated flashing matching the window. The window and mounting brackets are adapted for mounting with the specific associated type of flashing, which requires mount-ing the window at a particular installation level in the roof structure. Mounting the window and its mounting brackets with another type of flashing will result in incorrect mounting of the window and/or the flashing. Consequently, flashings are traditionally provided in a variety of types, thus rendering the manufacturing and storage more expensive.
Therefore, it is the object of the invention to provide a window with a mounting bracket of the type mentioned in the introduction, which enables correct mounting of the window without being restricted to the use of a specific type of flashing.
According to the invention, this is obtained by a mounting bracket according to claim 1 or claim 2.
It is noted that installation level is defined as the difference in the mounted position of the window between the top edge of the battens, i.e. the plane defined by the upper, outwards facing surface of the battens, and the top edge of the frame, i.e. the plane defined by the upper, outwards facing surface of the frame members of the window.
Thereby a window is provided which may be mounted correctly using different types of flashing, thereby simplifying the mounting process and furthermore opening the possibility of combining windows and flashings not hitherto combinable.
The mounting bracket comprises a third leg portion extending in a direction substantially perpendicular to the second leg section and being displaced parallel to one of the leg sections of the first leg portion in such a way as to provide a space between the window and an element of the roof structure in a mounted position of the window.
Thereby a window is provided which may easily be mounted in such a way that a gap of a size determined by the position, i.e. parallel displacement, of the third leg portion is provided between the frame of the window and the adjacent roof structure in the mounted position of the window, such a gap providing a space allowing the insertion of an insulating material between window and roof structure and/or mounting of certain types of flashing requiring such a space.
Furthermore, such a third leg portion provides for a more robust mounting bracket, particularly a more robust second leg section, and consequently a more robust and reliable mounting of the window in the roof structure, particularly a more robust and reliable connection between the mounting bracket and the roof structure.
In a preferred embodiment of the window according to the invention, the top member and the bottom member each comprises a substantially horizontally extending groove, the side members each comprises a pair of substantially horizontally extending grooves vertically offset in opposite directions with respect to the groove of the top member and the bottom member, respectively, and each of the two leg sections of the first leg portion comprises a flange which is essentially perpendicular to the leg section and positioned in such a way that the flange of one of the leg sections of the first leg portion may engage with the groove of the top or bottom member of the window, while the flange of the other leg section may engage one of the grooves of a side member.
Thereby a window is provided in which the connection between mounting bracket and both frame elements at a corner joint may be achieved in a simple and straight forward manner, while still ensuring the possibility of mounting the window with different types of flashings.
In a particularly preferred embodiment of the window according to the invention each side member comprises two grooves being mutually displaced by substantially equal opposite distances with respect to the groove of the top member and the bottom member, respectively, the distances preferably being between 10 mm and 30 mm, more preferably between 15 mm and 25 mm, and even more preferably 18 mm or 22 mm.
According to claim 2, the first leg portion comprises two leg sections both being adapted for connection with adjacent frame members at a corner joint, whereby the connection between mounting bracket and each frame member at a corner joint may be achieved in a particularly robust and secure manner.
According to claim 2, the second leg portion comprises two leg sections being mutually displaced in a direction substantially parallel with said first leg portion. Thereby a window is provided which in a particularly simple way may be mounted at one of two possible different installation levels, the installation levels being defined by the size of the displacement.
According to claim 2, the second leg portion comprises a connecting section interconnecting the two leg sections of the second leg portion and extending in a direction substantially perpendicular to said two leg sections, thereby providing for a more robust and reliable mounting bracket and consequently for a more robust mounting of the window.
In a particularly preferred embodiment of the window according to the invention, the two leg sections of the second leg portion are mutually displaced by between 10 mm and 30 mm, preferably between 15 mm and 25 mm, more preferably by 18 mm or 22 mm.
According to claim 2, each of the two leg sections of the first leg portion comprises holes for passing through fastening members.
In a further preferred embodiment of the window according to the invention, the second leg portion, or indeed at least one of the leg sections of the second leg portion in the case such leg sections are provided, comprises holes for passing through fastening members and/or engagement members designed for engagement with a corresponding mounting bracket of an adjacent window and/or at least one flap folded in a direction towards the roof structure in a mounted position.
In a particularly preferred embodiment of the window according to the invention the window comprises two pairs of mounting brackets, the mounting brackets of each pair being identical, whereby the window may be mounted at at least two different possible installation levels using the same two pairs of brackets. Preferably, the mounting brackets of the one pair of mounting brackets are mirror inverted with respect to the mounting brackets of the other pair of mounting brackets.
Further aspects of the invention comprise a set of two pairs of mounting brackets according to the invention, and the use according to claim 5 of such a set of mounting brackets for installing a window according to the invention.
The invention will be described in more detail below by means of a non-limiting example of an embodiment and with reference to the schematic drawings, in which

Fig. 1 shows a pitched roof structure with a window mounted at a first installation level,
Fig. 2 shows a pitched roof structure with a window mounted at a second installation level being lowered with respect to said first installation level,
Figs 3A and 3B show different perspective views of a first embodiment of a mounting bracket according to the invention,
Figs 4A and 4B show different perspective views of a second embodiment of a mounting bracket according to the invention;
Figs 5 and 6 show views corresponding to Figs 1 and 2 showing the mounting bracket according to one embodiment in two different positions.

In Fig. 1, a window 1 is shown in a mounted position at a first installation level used when mounting the window 1 with a first predefined type of flashing (not shown) in a pitched roof structure comprising rafters 20 extending in the direction of the roof pitch and battens 21 placed perpendicular hereto. For the sake of clearness, only the exterior frame of the window 1 is shown with two side members 4, 5 extending parallel to the rafters 20 and a top member 2 and a bottom member 3 extending parallel to the battens 21. An auxiliary batten 23 is placed above the last continuous batten 21 below the bottom member 3, just as an auxiliary batten 22 has been placed above the top member 2. In the installation situation shown, at least the lower auxiliary batten 23 is placed at an appropriate distance from the nearest continuous roof batten 21 in order to give way to positioning of the roofing material in such a way that the flashing can subsequently be placed in a satisfactory way, preferably without having to adapt it by an irregular deformation in order to obtain a secure waterproof flashing. However, the auxiliary battens 22, 23 may also be placed abutting the respective adjacent continuous battens 21.
The top and bottom frame members 2, 3 is each provided with one groove 7, while each side frame member 4, 5 is provided with two grooves 8a, 8b. The grooves 8a, 8b are displaced vertically and equidistant in opposite directions with respect to the groove 7 of the top and bottom frame members 2, 3. The grooves 7, 8a, 8b define different installation levels at which the window 1 may be mounted in the roof structure. Preferably the grooves 8a, 8b are each displaced with respect to the grove 7 by a distance being between 10 mm and 30 mm, more preferably between 15 mm and 25 mm, and even more preferably 18 mm or 22 mm.
The frame members 2-5 are connected with each other in corner joints 6, at which mounting brackets 10 are fastened in order to anchor the window 1 in the roof structure. In the embodiment of Fig. 1 the window 1 is mounted by bringing a flange 30 of a leg section 11a of the first leg portion 11 of the mounting brackets 10 into engagement with the groove 7 of a bottom or top member 2, 3, and placing the window in the roof structure such that a second leg portion 12 of the mounting bracket rests on the respective adjacent auxiliary batten 22 or 23, whereupon screws (not shown) are led through holes 28 in the second leg portion 12 of the mounting brackets 10, down in the auxiliary battens 22, 23 and further down in the subjacent rafters 20.
In the embodiment shown in Fig. 1 two pairs of mounting brackets 10a, 10b are needed to mount the window 1, the mounting brackets 10a, 10b of each pair being identical, and the mounting brackets of the one pair 10a being essentially mirror inverted versions of the mounting brackets of the other pair 10b.
In other embodiments the mounting brackets may be identical in pairs otherwise than by being mirror inverted, or the mounting brackets may simply be four identical mounting brackets.
Fig. 2 shows a window 1 in a mounted position at a second installation level used when mounting the window 1 with a second preferred type of flashing (not shown) in a pitched roof structure similar to that shown in Fig. 1, with the exception that no auxiliary batten is provided.
The top and bottom frame members 2, 3 is each provided with one groove 7, while each side frame member 4, 5 is provided with only one groove 8a. The frame members 2-5 are connected with each other in corner joints 6, at which mounting brackets 10 are fastened in order to anchor the window 1 in the roof structure.
In the embodiment of Fig. 2, however, the window 1 is mounted by bringing a flange 30 of a first leg section 11a of the first leg portion 11 of the mounting brackets 10 into engagement with the upper groove 8a of a side member 4, 5, and placing the window in the roof structure such that a second leg section 12 of the mounting bracket rests on an auxiliary rafter 24 placed on top of the adjacent rafter 20, whereupon screws (not shown) are led through holes 28 in the second leg portion 12 of the mounting brackets 10 down in the auxiliary rafter 24 and further down in the rafters 20.
For mounting the window 1 at the installation level according to Fig. 2 the same two pairs of mounting brackets 10a, 10b that were used for mounting the window 1 at the installation level according to Fig. 1 may be used by interchanging the positions of the mounting brackets 10a and 10b, respectively.
In alternative installation situations, the lower grove 8b may be used, and/or the auxiliary rafter 24 may be omitted. Furthermore, in alternative embodiments of the window 1, there may be more than one groove 7 provided in each of the top and bottom members 2, 3, and likewise there may be only one or more than two grooves 8a, 8b provided in each of the side members 4, 5. Also, either the top and bottom members 2, 3 or the side members 4, 5 may in principle have no grooves at all, in which case the side members 4, 5 or the top and bottom members 2, 3, respectively, are provided with at least two grooves, such that in any case at least two installation levels are defined.
Figs 3A and 3B show a first embodiment of a mounting bracket 10 according to the invention, and of the type used in the installation situations shown in Figs 1 and 2.
The mounting bracket 10 shown in Figs 3A and 3B comprises a second leg portion 12, which is adapted for connection with the underlying part of the roof structure in the mounted position by being provided with at least one hole 28 for passing through a fastening means such as e.g. a screw (not shown).
The mounting bracket 10 comprises a first leg portion 11 including two leg sections 11a, 11b of which one, here the leg section 11a, is adapted to be fastened to a frame member 2, 3, 4, 5 at a corner joint 6 by being provided with a hole 27 for passing through a fastening means such as a screw (not shown), whereas the other, here the leg section 11b, is merely adapted for abutment at a corner joint 6 with a frame member 2, 3, 4, 5 adjacent to the one to which the leg section 11a is fastened. The leg section 11a comprises a flange 30 extending essentially perpendicular to the leg section 11a and intended for engagement with a groove 7; 8a(and 8b if present) in a frame member 2, 3; 4, 5 at a corner joint 6 of the window 1.
The leg section 11b of the first leg portion 11 is in this embodiment provided as an element 11b extending essentially perpendicular to the leg section 11a at the end of a protruding section 14 of the leg section 11a, such that the second leg section 11b is intended for abutment at a corner joint 6 with a frame member 2, 3; 4, 5 of the window 1 adjacent to that to which the leg section 11a is abutting, thereby ensuring correct positioning of the mounting bracket 10 with respect to the corner joint 6.
The mounting bracket 10 further comprises a second leg portion 12 extending perpendicular to the leg sections 11a, 11b. The second leg portion 12 is intended, in a mounted position, for abutment against either the top side of a batten 21, preferably as indicated in Fig. 1 against the lower or upper auxiliary batten 22 or 23, or the top side of a rafter 20, preferably as indicated in Fig. 2 the top side of an auxiliary rafter 24, depending on the desired installation level. The second leg portion 12 is furthermore adapted for connection with the underlying part of the roof structure in the mounted position. In the embodiment shown this is achieved by providing the second leg portion 12 with at least one hole 28 for passing through a fastening means such as e.g. a screw (not shown).
The mounting bracket 10 further comprises a third leg portion 13 extending substantially perpendicular to the second leg portion 12 and comprising two leg sections 13a and 13b extending in extension of each other and essentially perpendicular to each other, such that the leg section 13a is provided displaced in parallel with the first leg section 11a of the first leg portion 11, while the leg section 13b is extending essentially perpendicular to both the first and the second leg portions 11 and 12.
The third leg portion 13 is intended for abutment, in the mounted position of the window, against a vertical surface of an element of the roof structure, such as an auxiliary batten 22, 23 (cf. Fig. 1), an auxiliary rafter 24 (cf. Fig. 2) or a rafter 20, thereby providing a gap between the roof structure and the frame of the window 1, which gap may be used for insulation purposes.
It is noted that the leg section 13b, which provides the mounting bracket 10 with added strength, and/or the protruding section 14 of the leg section 11a may in principle be omitted.
Turning to Figs 4A and 4B a second embodiment of a mounting bracket 10 according to the invention and for mounting a window 1 in at least two different predefined installation levels such as those shown in Figs 1 and 2 is shown.
The mounting bracket 10 comprises a first leg portion 11 including two leg sections 11a, 11b both adapted to be fastened to respective adjacent frame members 2, 3, 4, 5 at a corner joint 6 by being provided with a hole 27 for passing through a fastening means such as a screw (not shown). Each of the two leg sections 11a, 11b comprise a flange 30a, 30b extending essentially perpendicular to the respective leg section 11a, 11b and intended for engagement with a groove 7; 8a, 8b in a frame member 2, 3; 4, 5 at a corner joint 6 of the window 1.
The mounting bracket 10 further comprises two leg sections 12a, 12b extending perpendicular to the leg sections 11a, 11b, and forming together a second leg portion 12. One of the leg sections, here the leg section 12a, of the second leg portion 12 is intended, in a mounted position, for abutment against either the top side of a batten 21, preferably against the lower or upper auxiliary batten 22 or 23 corresponding to the installation shown in Fig. 1, or the top side of a rafter 20, or auxiliary rafter 24 corresponding to the installation shown in Fig. 2, depending on the desired installation level. The other leg section, here the leg section 12b of the second leg portion 12, is intended for stabilizing the mounting bracket and for facilitating correct placement of the mounting bracket 10 at a corner joint 6 of the window 1. Furthermore the leg section 12b may also be intended for abutment against a rafter 20 extending at a level below the auxiliary batten 22 or 23, thereby further stabilizing the window 1 in a mounted position corresponding to that of Fig. 1. At least one of the leg sections 12a, 12b of the second leg portion 12 may furthermore be adapted for connection with the underlying part of the roof structure in the mounted position. In the embodiment shown this is achieved by providing the leg section 12a with at least one hole 28 for passing through a fastening means such as e.g. a screw (not shown).
The leg sections 12a, 12b of the second leg portion 12 are mutually displaced in a direction substantially parallel to the first leg section 11, or in other words substantially parallel to both of the planes in which the respective leg sections 11a, 11b of the first leg section extend. Preferably the mutual displacement between the leg sections 12a, 12b amount to between 10 mm and 30 mm, preferably between 15 mm and 25 mm, and is more preferably 18 mm or 22 mm.
As the leg sections 11a and 12a are mutually connected and the leg sections 11b and 12b are likewise mutually connected, the leg sections 11a, 11b of the first leg portion 11, and thereby also their respective flanges 30a, 30b, are consequently also displaced in the same manner as the leg sections 12a, 12b of the second leg portion 12. This construction enables the flanges 30a, 30b to be brought into engagement with grooves 7; 8a, 8b of adjacent frame members 2, 3; 4, 5 at a corner joint 6 extending at different levels.
The second leg portion 12 furthermore comprises a third leg portion 13 extending in a direction essentially perpendicular to the second leg section 12 and being displaced in parallel to one of the leg sections 11a, 11b of the first leg portion 11. The third leg portion 13 is intended for abutment, in the mounted position of the window, against a vertical surface of an element of the roof structure, such as an auxiliary batten 22, 23 (cf. Fig. 1) or a rafter 20 (cf. Fig. 2), thereby providing a gap between the roof structure and the frame of the window 1, which gap may be used for insulation purposes.
The second leg portion 12 also comprises a connecting section 12c interconnecting the first and second leg sections 12a, 12b, thereby strengthening the mounting bracket 10 and consequently eventually the installed window structure.
In the embodiment shown in Figs 4A and 4B the third leg portion 13 and the connecting section 12c is one and the same element. However, the third leg portion 13 and the connecting section 12c may in other embodiments be two separate elements.
Further, in a manner known per se, the second leg portion 12 may comprise, at its outer edge, an engagement member, e.g. in the form of a projection 32 and a recess 33 intended for engagement with a corresponding engagement member on a mounting bracket of an adjacent window as in the embodiment shown. Likewise, the second leg portion 12 may in a manner known per se comprise a folded flap (not shown). In a mounted position, this flap abuts the roof structure and causes a minimum distance to be maintained between the roof structure and the top or bottom member of the frame so that insulating material may be inserted in this space.
In the following installation examples corresponding to those shown in Figs 1 and 2 using mounting brackets according to Figs 4A and 4B will be described.
In an installation corresponding to that of Fig. 1 the window 1 is mounted by bringing the flange 30b of the second leg section 11b of the leg portion 11 of the mounting brackets 10 into engagement with the lower groove 8b of a side member 4, 5 and the flange 30a of the second leg section 11a of the leg portion 11 into engagement with the groove 7 of the adjacent top member 2 or bottom member 3, and placing the window in the roof structure such that a second leg section 12a of the second leg portion 12 of the mounting bracket 10 rests on the respective adjacent auxiliary batten 22 or 23, whereupon screws (not shown) are led through holes 28 in the second leg section 12a of the mounting brackets 10, down in the auxiliary battens 22, 23 and further down in the subjacent rafters 20.
In an installation corresponding to that of Fig. 2, however, the window 1 is mounted by bringing the flange 30a of the first leg section 11a of the leg portion 11 of the mounting brackets 10 into engagement with the upper groove 8a of a side member 4, 5 and the flange 30b of the second leg section 11b of the leg portion 11 into engagement with the groove 7 of the adjacent top member 2 or bottom member 3, and placing the window in the roof structure such that the second leg section 12a of the mounting bracket rests on the adjacent auxiliary rafter 24, whereupon screws (not shown) are led through holes 28 in the second leg portion 12 of the mounting brackets 10, down in the auxiliary rafter 24 and further down in the rafters 20.
Finally, it should be noted that the above description of preferred embodiments serves only as an example, and that a worker skilled in the art will know that numerous variations are possible according to the claims.

Claims

A mounting bracket (10) for installation of a window in a roof structure, the mounting bracket comprising a first leg portion (11) and a second leg portion (12) essentially perpendicular to the first leg portion (11) for fastening to the roof structure, where the first leg portion (11) comprises two leg sections (11a, 11b), at least one of the leg sections (11a, 11b) being adapted for connection with a frame member (2, 3, 4, 5) of said window at a corner joint (6), the two leg sections (11a, 11b) being substantially perpendicular to each other for abutment with adjacent frame members of said window at a corner joint (6),
wherein the first of said two leg sections (11a, 11b) of the first leg portion (11) is adapted to be fastened to a frame member (2, 3, 4, 5) at a corner joint (6) by being provided with a hole (27) for passing through a fastening means such as a screw, and the second of said two leg sections (11a, 11b) of the first leg portion (11) is adapted for abutment at a corner joint (6) with a frame member (2, 3, 4, 5) adjacent to the one to which the first leg section (11a) is fastened, and the first of said two leg sections (11a, 11b) of the first leg portion (11) comprises a flange (30) which is essentially perpendicular to the first leg section (11a) for engaging a groove (7, 8a, 8b) in a frame member (2, 3, 4, 5) of said window at a corner joint (6),

characterized in that the second leg section (11b) is extending essentially perpendicular to said first leg section (11a) at the end of a protruding section (14) of said first leg section (11a) for abutment of said second leg section (11b) at a corner joint (6) of said roof window with a frame member of the roof window adjacent to which the first leg section (11a) is abutting, and in that said mounting bracket (10) comprises a third leg portion (13) being in direct connection with said second leg portion (12), said third leg portion (13) extending in a direction substantially perpendicular to said second leg portion (12) and being displaced in parallel to one of said leg sections (11a, 11b) of said first leg portion (11), the third leg portion (13) comprising two leg sections (13a, 13b) extending in extension of each other and essentially perpendicular to each other, such that one leg section (13a) is provided displaced in parallel with the first leg section (11a) of the first leg portion (11) for abutment against a vertical surface of an element of the roof structure, such that a gap is formed between the roof structure and the frame of the window, while the other leg section (13b) is extending essentially perpendicular to both the first and the second leg portions (11, 12), and in that the second leg portion (12) and the flange (30) are extending in different planes that are parallel to each other and perpendicular to the first leg section (11a) in mutually opposite directions, in order for said second leg portion (12) to be fastenable to the roof structure and at the same time allow said flange (30) to be brought into engagement with a groove of said window frame.
A mounting bracket (10) for installation of a window in a roof structure, the mounting bracket comprising a first leg portion (11) and two leg sections (12a, 12b) forming together a second leg portion (12) essentially perpendicular to the first leg portion (11), where the first leg portion (11) comprises two leg sections (11a, 11b), at least one of the leg sections (11a, 11b) being adapted for connection with a frame member (2, 3, 4, 5) of said window at a corner joint (6), the two leg sections (11a, 11b) of said first leg portion (11) being substantially perpendicular to each other for abutment with adjacent frame members of said window at a corner joint (6) wherein the two leg sections (11a, 11b) of said first leg portion (11) both are adapted to be fastened to respective adjacent frame members (2, 3, 4, 5) of said window at a corner joint (6) by being provided with a hole (27) for passing through a fastening means, such as a screw , wherein each of said two leg sections (11a, 11b) of the first leg portion (11) comprise a flange (30a, 30b) which is essentially perpendicular to the respective leg section (11a, 11b) and intended for engagement with a groove (7, 8a, 8b) in a frame member (2, 3, 4, 5) at a corner joint (6) of the window (1), characterized in that said mounting bracket (10) comprises a third leg portion (13) intended for abutment against a vertical surface of an element of said roof structure, extending in a direction substantially perpendicular to said second leg portion (12) and being displaced in parallel to a first leg section (11a) of said first leg portion (11) such that a gap is formed between the roof structure and the frame of the window, and in that a first leg section (12a) of said two leg sections (12a, 12b) of said second leg portion (12) and the flange (30a) of said first leg section (11a) of said first leg portion (11) are extending in different planes that are parallel to each other and perpendicular to the first leg section (11a) of the first leg portion (11) in mutually opposite directions, while said flange (30a) is in the same plane as a second leg section (12b) of said two leg sections (12a, 12b) and that the second leg section (12b) and said flange (30b) of said second leg section (11b) of said first leg portion (11) are extending in different planes that are parallel to each other and perpendicular to the second leg section (11b) of said first leg portion (11) and that said two leg sections (12a 12b) of said second leg portion (12) are extending in different planes that are parallel to each other and perpendicular to the third leg portion (13) and the third leg potion (13) forming a connecting section (12c) of the second leg portion (12), the connecting section (12c) interconnecting the first and second leg sections (12a, 12b) of said second leg portion (12), in mutually opposite directions in order for said first leg section (12a) of said second leg portion (12) to be fastenable to the roof structure and at the same time allow both said flanges (30a & 30b) to be brought into engagement with grooves of said window frame and said third leg section (13) to be brought into abutment against a vertical surface of an element of said roof structure.
A set of mounting brackets comprising two pairs of mounting brackets according to claim 1 or 2, the mounting brackets (10a, 10b) of each pair being identical.
A set of mounting brackets according to claim 3, wherein the mounting brackets (10a) of the one pair of mounting brackets are mirror inverted with respect to the mounting brackets (10b) of the other pair of mounting brackets.
Use of a set of mounting brackets (10a, 10b) according to one or more of claims 3 and 4 for installing a window (1) according to one or more of claims 6 to 13.
A window (1) for installation in a roof structure, comprising a frame with a top member (2), a bottom member (3) and two side members (4, 5) mutually connected in corner joints (6), and a plurality of mounting brackets (10) according to claim 2, the first leg portion (11) of each mounting bracket (10) is used for connection with an associated frame member (2, 3, 4, 5) and the second leg portion (12) is used for fastening to the roof structure, wherein the window (1) is adapted for installation in at least two predefined installation levels in said roof structure in that one of said two leg sections (11a, 11b) of the first leg portion (11) comprises a flange (30) which is essentially perpendicular to the leg section, that the top and bottom members (2, 3) each comprise at least one substantially longitudinally extending first groove (7) and that the side members (4, 5) each comprises at least one substantially longitudinally extending second groove (8a, 8b), said first and second grooves (7; 8a, 8b) defining said predefined installation levels, such that when said mounting bracket (10) is placed with said flange (30) in engagement with one of the first and second grooves (7; 8a, 8b), the window (1) may be installed in the installation level corresponding to the one of the first and second grooves (7; 8a, 8b) with which said flange (30) is in engagement.
A window according to claim 6, wherein the third leg portion (13) of said mounting bracket (10) is displaced parallel to one of said leg sections (11a, 11b) of said first leg portion (11) in such a way as to provide a space between the window (1) and an element of said roof structure in a mounted position of said window (1).
A window according to claim 6 or 7, wherein the top member (2) and the bottom member (3) each comprises a substantially horizontally extending groove (7), that the side members (4, 5) each comprises a pair of substantially horizontally extending grooves (8a, 8b) vertically offset in opposite directions with respect to the groove (7) of the top member (2) and the bottom member (3), respectively, and that each of the two leg sections (11a, 11b) of the first leg portion (11) comprises a flange (30) which is essentially perpendicular to the leg section and positioned in such a way that the flange (30) of one of the leg sections (11a, 11b) of the first leg portion (11) may engage with the groove (7) of the top or bottom member of the window, while the flange (30) of the other leg section (11a, 11b) may engage one of the grooves (8a, 8b) of a side member (4, 5).
A window according to claim 8, wherein each side member comprises two grooves (8a, 8b) being mutually displaced by substantially equal opposite distances with respect to the groove (7) of the top member (2) and the bottom member (3), respectively, the distances preferably being between 10 mm and 30 mm, more preferably between 15 mm and 25 mm, and even more preferably 18 mm or 22 mm.
A window according to any one of claims 6 to 9, wherein the first leg portion (11) comprises two leg sections (11a, 11b) both being adapted for connection with adjacent frame members at a corner joint (6), preferably by that each of the two leg sections (11a, 11b) of the first leg portion (11) comprises holes (27) for passing through fastening members.
A window according to any one of claims 6 to 10, wherein the second leg portion (12) comprises two leg sections (12a, 12b) being mutually displaced in a direction substantially parallel with said first leg portion, said displacement preferably being by between 10 mm and 30 mm, more preferably between 15 mm and 25 mm, and even more preferably by 18 mm or 22 mm.
A window according to claim 11, wherein the second leg portion (12) comprises a connecting section (12c) interconnecting the two leg sections (12a, 12b) of the second leg portion and extending in a direction substantially perpendicular to said two leg sections (12a, 12b).
A window according to any one of the claims 6 to 12, wherein the second leg portion (12) comprises holes (28) for passing through fastening members and/or engagement members (32, 33) designed for engagement with a corresponding mounting bracket of an adjacent window and/or at least one flap folded in a direction towards the roof structure in a mounted position.
A window according to any one of the claims 6 to 13, wherein the window (1) comprises two pairs of mounting brackets (10a, 10b), the mounting brackets (10a, 10b) of each pair being identical, and preferably in that the mounting brackets (10a) of the one pair of mounting brackets are mirror inverted with respect to the mounting brackets (10b) of the other pair of mounting brackets.