EP2843150B1

EP2843150B1 - Window frame with fitting for roof window

Info

Publication number: EP2843150B1
Application number: EP14182374.0A
Authority: EP
Inventors: Waclaw Majoch; Henryk Musial; Tomasz Gruca
Original assignee: Fakro PP Sp zoo
Current assignee: Fakro PP Sp zoo
Priority date: 2013-08-28
Filing date: 2014-08-27
Publication date: 2015-12-23
Anticipated expiration: 2034-08-27
Also published as: EP2843150A1; PL236003B1; PL405155A1

Description

The invention relates to a roof window comprising the features of the preamble of claim 1, said window is opened by rotation of the sash around a horizontal axis, as a pivoting window, or tilting window, or dual-action window: pivoting-tilting window. The roof window according to the invention is intended mainly for installation in a roof, with large immersion of the window sash in the layered structure of the roof.
State of the art. Patent description No. PL 200789 discloses a solution for a window frame of a roof window, having a rectangular recess on its bottom surface, the recess having a support surface being seated on elements of the roof structure. A significant part of this window frame, and consequently of the roof window, protrudes above the roof's surface. Patent description No. PL 214536 discloses a roof window, having a window frame fixed by runners penetrating the roof structure basically perpendicularly to its surface, the runners being covered on the side with a thin layer of thermal insulation. Also in this solution, a significant part of the window frame protrudes above the roof's surface, moreover the fixing runners form thermal bridges, facilitating escape of heat from the attic outwards. In known roof windows being opened at least as pivoting, called also pivot windows or reversible windows, the hinges, using which the sash is mounted, are immersed into the window between the side members of the window frame and the sash, forming thermal bridges with a high share of metal parts.
EP 2 500 487 B1 discloses a roof window according to the preamble of claim 1, the structural element being mounted on the lateral surface of the window frame members.
Essence of the solution.
A roof window comprises the features of claim 1.
In the first aspect of the invention, the structural element of the window frame connecting it with the roof, is a support flashing, adjacent to at least three of the window frame members, including both side members, protruding at least sideways beyond the outline of the members. In its members, the window frame has walls made of a material with a low thermal conductivity, preferably a plastic, situated along the support flashing, transversely to its surface resting on the roof. These walls are situated at least at the side of the window sash, forming - on at least three members, the top one and both side ones - a circumferential wall surrounding the opening in the window frame. In the walls situated in the window frame members from the side of the window sash, there are longitudinal grooves, particularly with a T-shaped cross-section. These grooves serve the purpose of mounting the seals situated between the window frame and the window sash.
Outside the walls, the window frame members seated in the roof structure, have a filling made of an insulating material, preferably a porous one, with a lower resistance than the material of the walls in the window frame, but with a higher thermal performance than the material of walls. Basically, the external surface of the filling does not require an exposure, but it may be equipped with a second wall the same type of plastic, as the wall from the side of the window sash. A variation of the frame members is also possible, where they do not have a separation of materials to a more mechanically resistant wall and a filling with improved thermal performance, but they are made of a material uniting both these properties. Grooves for the seals are then situated directly in this material of the frame members.
In a second aspect of the invention, the structural element of the window frame connecting it with the roof is constituted by bearing strips, adjacent to the side members of the window frame, on the external side of the window. The bearing strips protrude beyond the outline of the window frame members on its opposite sides, and it may be a protrusion of the strips sideways of the window, or a protrusion along the side frame members, upwards and downwards, beyond the top member and the bottom member of the window frame. The window frame according to the second aspect of the invention has in its members, similarly as according to the first aspect, walls made of a material with a low thermal conductivity, preferably a plastic, which are situated at least on the side of the window sash, forming on at least three frame members, the top one and both side ones, a circumferential wall surrounding the opening in the window frame. In the walls situated in the window frame members on the side of the window sash, there are longitudinal grooves, particularly with a T-shaped cross-section. These grooves serve the purpose of mounting the seals situated between the window frame and the window sash. Outside the walls, the window frame members seated in the roof structure, have a filling made of an insulating material, preferably a porous one, with a lower resistance than the material of the walls in the window frame, but with a higher thermal performance than the material of the walls. Basically, the external surface of the filling does not require an exposure, but it may be equipped with a second wall of a plastic; a variation of the frame members is also possible, made of a uniform material, with grooves for the seals situated directly in this material - as in the first aspect of the invention.
The fixing set of the window sash, belonging to the fitting system of the window frame, and containing hinges fixed on the structural element of the window frame, connecting it with the roof, that is on the support flashing, or on bearing strips; occurs in three aspects.
The first aspect of the fitting belonging to the window frame, is constituted by hinges situated on both side frame members of the window frame, in the middle section of the length of these members, above the middle of the window height, on its external side. The hinges are intended for opening of the window in the pivoting mode, i.e. by rotation of the sash around a geometrical axis, located usually slightly below the middle of the window height, so that the lower part of the window sash during opening of the window moves towards the exterior of the roof, and the upper part of the sash moves towards the interior of the attic. The hinges, are defined in this description as "pivoting hinges", on the account of opening of the window in the pivoting mode. The hinges are mounted on the external surface of the structural element of the window frame connecting the frame with the roof, that is on the external surface of the support flashing, or on the external surfaces of both bearing strips.
The second aspect of the fitting belonging to the window frame is constituted by window sash hinges situated near the top edge of the window, serving the purpose of opening of the window in the tilting mode, hereinafter defined as "tilting hinges". The hinges are mounted on the external surface of the structural element of the window frame connecting the frame with the roof, that is on the external surface of the support flashing, or on the external surfaces of both bearing strips. In the tilting hinges, arms are seated, terminated with pivoting hinges, while both the tilting and pivoting hinges, as well as the arms connecting them, are situated on the external side of the window. The hinges according to this aspect enable using the window as a dual-action window, by opening it as a pivot window or a tilt window. During opening of the window in the pivoting mode, the window sash rotates in the pivoting hinges, as in the first aspect of the fitting, while the tilting hinges are blocked, and the arms connecting both types of hinges rest on the window frame. During opening of the window in the tilting mode, the window sash together with the arms connecting both types of hinges, rotate in the tilting hinges.
The third aspect of the fitting belonging to the window frame is constituted by hinges for a window sash, situated near the top edge of the window, i.e. tilting hinges, in which the window sash is mounted directly. The hinges are placed on the external side of the window. The window according to the third aspect of the invention is being opened only in the tilting mode.
In all aforementioned aspects, the window frame with a fitting may have an additional frame, preferably made of wood, situated at the internal side of the window, that is on the side of the attic. On the additional frame, elements locking the window are installed, mating with corresponding locking elements seated on the frame of the sash. These are for instance bolt sockets, mating with the bolt of the handle. On the other hand, the window frame has on its external surface, on the external side of the window, installation elements for connecting the window frame with the flashings of the window, which seals the connection of the window frame with the roof. Preferably it is an installation frame, upon which properly bent edges of the flashing of the window are laid, resting on the roof and adjacent to the window.
Advantages of the invention. Thanks to its design enabling its immersion in the roof structure, the roof window frame with a fitting for a roof window for immersing also the sash of the roof window in this structure, increases the thermal performance of the whole window. Metal elements of the window frame, having large volume and mass, such as: hinges, support flashing, or bearing strips, are situated on the external side of the window frame, and do not have components penetrating the interior of the roof structure, or the interior of the opening in the window frame for a sash; optionally these parts constitute a small share in metal fitting subsets, so there are no thermal bridges in the window frame, which could lead to thermal losses from the attic by outflow of heat to the outside of the building.
Embodiments. A roof window comprising a window frame with a fitting for a roof window sash being the subject of the invention is presented by its embodiments in the drawing, with the individual Figures showing:

Fig. 1 - A window frame with the support flashing, for a pivoting window, seated on battens in the roof structure, according to the first embodiment - in an axonometric view.
Fig. 2 - The window side frame member of Fig. 1 and a pivoting hinge with a fragment of the sash - in a cross-section transverse in relation to the side frame member.
Fig. 3 - A detail of the mounting of the additional frame in the window frame of Fig. 1 - in a cross-section transverse in relation to the window side frame member.
Fig. 4 - A window frame with bearing strips for a dual-action window, pivoting & tilting, seated on battens of the roof structure, according to the second embodiment - in an axonometric view.
Fig. 5 - The window side frame member of Fig. 4 with a tilting hinge and a fragment of the window sash - in a cross-section transverse in relation to the side window frame member.
Fig. 6 - A side window frame member and pivoting hinge with a fragment of the window sash, according to the third embodiment - in a cross-section transverse in relation to the side window frame member.

The roof window according to the invention, is also presented in embodiments not supplemented with a drawing, but described through indication of their mutual features with the drawn embodiments and features differing them from the drawn embodiments.
Example 1. The roof window with window frame which has a form of a rectangular frame 1, with the following main elements: two side frame members 11, a top frame member 12 and a bottom frame member 13. On the external side of the window, the window frame has a support flashing 2 in the form of an open frame, placed at the external side of the window on the window side frame members 11 and the window top frame member 12. The support flashing 2 is adjacent to the window frame members: side 11 and top 12 with its flat internal area 21, while it protrudes beyond the outline of the window frame members: side 11 and top 12 with its flat external area 22, sideways and towards the upper section of the roof plane, while being adjacent only partially to terminal fragments of surfaces of these members on the external side of the window. The flat internal area 22 of the support flashing 2 rests on the supporting structure 3 of the roof, on horizontal tile battens 31, being a support for roofing-tiles 32, while the tile battens rest on counter battens 33 laid on rafters 34, being basic supporting elements of the roof structure.
Both window side frame members 11 have thin walls 14 with a low thermal conductivity, made of a plastic, situated in the window frame on the side of the sash 4 of the window, while the main bulk of the window side frame member is formed by the filling 15 made of an insulating material, particularly a porous one. In the walls 14, T-shaped grooves 16 are situated along the window frame members, and in these grooves seals 17 are mounted, with freely moving flaps adjacent, in a closed window, to the side surfaces of the sash 4. On the external side of the window, the walls 14 have a connecting lip 18, by which these walls are connected with an internal bend 23 of the support flashing. The filling 15 of the side frame members is glued both to the plastic walls 14, and to the support flashing 2 of the window frame. The top member of the window frame (not shown in the cross-section) is built in the same way, and the wall of the frame member situated from the side of the window sash, is connected with the walls 14 of the side members at its ends, forming, together with them, a frame surrounding the opening in the window frame for a sash 1 from at least three sides.
On the support flashing 2, on its side sections, which rest on the side frame members 11 of the window frame, on the external side of the window, pivoting hinges 5 are installed, situated slightly above the middle of length of the window side frame members 11. In the pivoting hinges 5, both their stationary parts 51 fixed to the support flashing 2, and moving parts 52, mating with the sash 4 of the window, as well as axes 53 of the hinge, are situated above the support flashing 2, as well as above the glazing unit 41 in the sash 4 of the window, the unit consisting of four panes separated with internal frames. Only a small strip 54 belonging to the moving part 52 of the pivoting hinge, enters partially the space between the side member 11 of the window frame and the side wall 42 of the sash 4, in order to stabilise this part of the hinge on the sash 4. Movable parts 52 of the pivoting hinges 5 are connected with the side walls 42 of the sash 4 using a reinforcing insert 43, placed in the duct of the side wall 42 of the sash 4 on the external side of the window. The movable part 52 of the pivoting hinge 5 is connected with the reinforcing insert 43 using threaded fasteners 55. In the pivoting hinges 5, during opening of the window, the window sash 4 rotates so as to the lower part of the sash, situated below these hinges, moves towards the exterior of the roof, and the upper part of the sash situated above of these hinges moves towards the interior of the attic.
In the sections rested on the side frame members 11 and on the top frame member 12, between its flat internal area 21 and flat external area 22, the support flashing 2 has a lip, forming an open installation frame 24 in these three sections of the flashing, for connection of the flashing 35 of the window, installed in the roof structure, to the support flashing 2. The purpose of the flashing 35 is to seal the mounting of the window in the roof structure. At external edges of its side sections, the support flashing 2 has a series of holes 25 for threaded fasteners, particularly screws, fixing this support flashing to battens 31 of the roof structure. The holes 25 in the support flashing 2 and the threaded fasteners seated in them are covered with the flashing 35.
Above the support flashing 2, as well as above the pivoting hinges 5, shields 6 of the side gaps are situated, the gaps being located between the side members 11 of the window frame and the sash 4 of the window. The shields 6 (shown in Fig. 2, omitted in Fig. 3) are divided, as a common practice in pivoting windows, and sections of the shields situated in the upper part of the window, are installed immovably on the window frame, while sections of the shields situated in the lower part of the window are installed on the sash and move during opening of the window together with the lower part of the sash, outwards.
The window frame has also a wooden additional frame 7, located on the side of the attic. In the wooden additional frame 7, locking elements of the window are seated, for instance sockets for a handle bolt, mating with their respective locking elements mounted on the sash 4, in its additional frame 44. Moreover, on the side of the attic, the additional frame 7 has a groove 71, in which an edge of lining 36 of the window opening in the roof is seated; the frame has also an additional groove for mounting of the seal 72, having a free flap adjacent, in a closed window, to the surface of the sash 4. The wooden additional frame 7 of the window frame is fixed to the support flashing 2 using screws 73, placed in bushings 72 running through the side window frame member. Identically, in the section mating with the window top frame member 13, the additional frame is fixed to the upper section of the flashing using screws, and has a groove for the lining.
Example 2. The roof window with window frame, which has a form of a rectangular frame 1, with the following main elements: two side members 11, a top member 12 and a bottom member 13. On the external side of the window, the window frame has two bearing strips 8 laid on its side members 11. The bearing strips 8 are adjacent to the window side frame members 11 with their flat internal areas 81, while they protrude beyond the outline of the window side frame members 11 with their flat external areas 82, sideways and along these members towards the upper (above the window) and the lower (below the window) sections of the roof plane, while being only partially adjacent to the terminal fragments of surfaces of the side members. In both bearing strips 8, their flat external areas 82, as well as sections of the strips protruding outwards along the side frame members 11, rest on the supporting structure 3 of the roof, on horizontal tile battens 31, being a support for roofing-tiles 32, while the tile battens rest on counter battens 33 laid on rafters 34, being basic supporting elements of the roof.
Both window side frame members 11 have thin walls 14 with a low thermal conductivity, made of a plastic, situated on the window frame on the side of the sash 4 of the window, while the main bulk of the side member is formed by the filling 15 made of an insulating material, particularly a porous one. In the walls 14, T-shaped grooves 16 are situated along the window frame members, and in these grooves, weather strips 17 are mounted, with freely moving flaps adjacent, in a closed window, to the side surfaces of the sash 4. On the external side of the window, the walls 14 have a connecting lip 18, by which these walls are connected with internal lips 83 of the support flashings. The filling 15 of the side frame members is glued both to the plastic walls 14, and to the support flashing 2 of the window frame. The top member of the window frame (not shown in the cross-section) is built in the same way, and the wall of the frame member situated from the side of the window sash, is connected with the walls 14 of the side frame members at its ends, forming, together with them, a frame surrounding the opening in the window frame for a sash 1 from at least three sides.
On the bearing strips 8 which rest on the side frame members 11 of the window frame, in upper sections of the strips, near the top member 12 of the window frame, tilting hinges 9 are installed, connected with the pivoting hinges 5 by their intermediate arms 91, and the tilting hinges are situated slightly above the middle of length of the window. In the tilting hinges 9, both their stationary parts 92 fixed to the bearing strips 8, and moving parts 93 mating with their intermediate arms 91, as well as the axes 94 of these hinges, are situated above the bearing strips 8, and also above the glazing unit 41 in the window sash 4, the unit consisting of two panes separated with internal frames. Also the pivoting hinges 5 are situated above the bearing strips 8, and above the glazing unit in the window sash. Movable parts of the pivoting hinges are connected with the sash through reinforcing inserts placed in ducts of the side walls of the sash on the external side of the window - identically as in the first embodiment of the invention.
The window frame according to the second embodiment, particularly its fitting, is intended for a dual-action window, opened as a pivot window or a tilt window. During pivoting opening, the intermediate arms 91 rest on the window frame along its side members 11 (Fig. 4, the right-hand arm), and the window sash rotates in the pivoting hinges 5 - as in the first embodiment. During tilting opening, the window sash rotates in the tilting hinges 9, and the intermediate arms 91 are raised together with the sash (Fig. 4, the left-hand arm).
Between their flat internal areas 81 and flat external areas 82, the bearing strips 8 have a bend forming a mounting lip 84 in every strip, for connection of the window flashing 35, installed in the roof structure, to the bearing strips 8. The purpose of the flashing 35 is to seal the mounting of the window in the roof structure. Near their external edges, the bearing strips 8 have a series of holes 85 for threaded fasteners, particularly screws, fixing these bearing strips to battens 31 of the roof structure. The holes 85 in the bearing strips and the fasteners seated in them are covered with flashing 35.
Above the bearing strips 8, as well as above the pivoting hinges 5, the tilting hinges 9, and the intermediate arms 91, shields 6 of the side gaps are situated, the gaps being located between the side frame members 11 of the window frame and the window sash 4. The shields 6 are divided; their sections situated in the upper part of the window are installed on the intermediate arms, while the sections situated in the lower part of the window are installed on the sash. During pivoting opening, the upper sections of the shields rest together with the intermediate arms on the side members of the window frame, and the lower sections move together with the lower part of the sash. During tilting opening, the window sash moves as a whole towards the exterior of the roof, and both lower and upper sections of the shields, move together with the sash.
The window frame has also a wooden additional frame 7, situated on the side of the attic, as in the first embodiment. In the wooden additional frame 7, locking elements of the window are seated, for instance sockets for a handle bolt, mating with their respective locking elements mounted on the sash 4, in the additional frame 44 of the sash. On the side of the attic, the additional frame 7 has a groove 71, in which an edge of lining 36 of the window opening in the roof is seated; in this frame, also a seal 72 is mounted, having a free flap adjacent, in a closed window, to the surface of the sash 4. The wooden additional frame 7 of the window frame is fixed to the bearing strips 8 using screws 73 placed in bushings 72, running through the window side frame member 11.
Example 3. The roof window with window frame, which has a form of a rectangular frame, with the following main elements: two side members 19, a top member and a bottom member - as in both previous embodiments. On the external side of the window, the window frame has a support flashing 2 in the form of an open frame, placed at the external side of the window on the side window frame members 19 and the window top frame member 12. The support flashing 2 is adjacent to the window frame members: side 19 and top (not shown in Fig. 6) with its flat internal area 21, while it protrudes beyond the outline of the window frame members: side 19 and top with its flat external area 22, sideways and towards the upper section of the roof plane, while being adjacent only partially to terminal fragments of surfaces of these members on the external side of the window. The flat internal area 22 of the support flashing 2 rests on the supporting structure 3 of the roof, on horizontal tile battens 31, being a support for roofing-tiles 32, while the tile battens rest on counter battens 33 laid on rafters 34, being basic supporting elements of the roof structure.
In this embodiment, unlike in the previous embodiments, the window side frame members do not have thin plastic walls, situated on the window frame on the side of the window sash 4. In this embodiment, the window side frame members 19 are made of a uniform material, constituting both a support structure of the window frame, and thermal insulation. The T-shaped grooves 16, situated along the window frame members, and intended for mounting of the seals 17, are located directly in the uniform side frame member 19.
On the support flashing 2, on its side sections, which rest on the side members 19 of the window frame, on the external side of the window, pivoting hinges 5 are installed, situated slightly above the middle of length of the window side frame members 11. In these hinges, both their stationary parts 51 fixed to the support flashing 2, and moving parts 52 mating with the window sash 4, as well as the axes 53 of the hinge, are situated above support flashing 2, as well as above the glazing unit 41 in the window sash 4, the unit consisting of two panes separated with internal frames. Movable parts 52 of the pivoting hinges 5 are connected with the side walls 42 of the sash 4 using a reinforcing insert 43, placed in the duct of the side wall 42 of the sash 4 on the external side of the window, and the threaded fasteners 55.
The support flashing 2 has a lip forming an open installation frame 24 for connection of the flashing 35 of the window, installed in the roof structure, to the support flashing 2. The purpose of the flashing 35 is to seal the mounting of the window in the roof structure. At external edges of its side sections, the support flashing has a series of holes for threaded fasteners, particularly screws, fixing the support flashing to battens 31 of the roof structure. The holes in the support flashing 2 and the threaded fasteners seated in them are covered with the flashing 35. Above the support flashing 2, as well as above the pivoting hinges 5, shields 6 are situated - as in previous embodiments.
The window frame has also a wooden additional frame 7, located on the side of the attic. In the wooden additional frame 7, locking elements of the window are seated, for instance sockets for a handle bolt, mating with their respective locking elements mounted on the sash 4, on the additional frame 44 of the sash. Moreover, on the side of the attic, the additional frame 7 has a groove 71, in which an edge of lining 36 of the window opening in the roof is seated; the frame has also an additional groove for mounting of the seal 72, having a free flap adjacent, in a closed window, to the surface of the sash 4. The wooden additional frame 7 of the window frame is fixed to the support flashing 2 using screws 73, placed in bushings 72 running through the side window frame member. Identically, in the section mating with the window tope frame member 12, the additional frame is fixed using screws to the upper section of the flashing and has a groove for the lining.
Example 4. The roof window with window frame which has a form of a rectangular frame, with a support flashing 2 as in the first embodiment. On the side frame members, near the top frame member, tilting hinges 9 are fixed, situated above the support flashing, and under the shields 6 of the side gaps. Movable parts of the tilting hinges connected directly with the window sash, are fixed to reinforcing inserts placed in ducts in the side walls of the sash, in the sections of these walls situated at upper ends of the side walls. According to this embodiment of the invention, the window frame with a fitting allows for opening of the window only in the tilting mode, that is by rotation of the sash around a horizontal axis located at the top edge of the window.
The embodiments presented do not exclude other possibilities for the realisation of the invention, as defined in the appended claims.
The window frame may have a support frame, as in the first embodiment, and a set of tilting and pivoting hinges, for dual-action of the window, as in the second embodiment. Also a reversed combination is possible, i.e. bearing strips and pivoting hinges only. The window frame may be installed in roofs with other structures, for instance in a roof with profiled sheets seated on battens, or in a flat rooftop, with roofing sheets or roof paper.

Claims

A roof window comprising a window sash (4) and a window frame (1) with a fitting for a window sash,
- the window frame (1) having a design enabling the window frame to be immersed in the roof structure, the window frame having the form of a rectangular frame and comprising: a top member (12), a bottom member (13) and two side members (11; 19),

- the window frame (1) being equipped with said fitting constituting at least an installation set of the window sash,

- the window frame (1) further comprising at least one structural element (2, 8) for connecting the window frame with the roof, said at least one structural element (2, 8) of the window frame protruding beyond the outline of the window frame members (11 or 19, 12, 13),

- the window sash (4) comprising a glazing unit (41), the window sash being situated in the opening of the window frame at least when the window is closed, the window sash being opened by rotation around at least one horizontal geometrical axis,

- the window sash (4) as well having elements of a locking set for when the window sash is in a closed position,

- the window frame (1) mating with shields (6) of gaps between the window frame and the window sash, and the window frame comprising a set of seals (17) in these gaps, characterised in that:

- the at least one structural element (2, 8) of the window frame is located in use on the top surface of the window frame members (11 or 19, 12, 13), while said at least one structural element (2, 8) of the window frame protrudes beyond the outline of the window frame members (11 or 19, 12, 13),

- hinges (5, 9) are installed on the at least one structural element (2, 8),

- and said at least one horizontal geometrical axis is located, in use, slightly above the surface of the window frame.
A roof window according to claim 1, characterised in that the at least one structural element (2, 8) of the window frame connecting it with the roof is constituted by a support flashing (2) adjacent to at least three of the window frame members, including both side members(11, 19) the support flashing protruding at least sideways beyond the outline of the window frame members.
A roof window according to claim 2, characterised in that said window frame has walls (14) made of a material with a low thermal conductivity, preferably a plastic, situated on the window frame members at least on the side of the window sash (4), along the support flashing (2), transversely to its surface resting on the roof.
A roof window according to claim 3, characterised in that the walls (14) situated on the side of the window sash (4) have longitudinal grooves (16), with a T-shaped cross-section, for the mounting of the seals (17).
A roof window according to claim 1, characterised in that the structural element (2, 8) of the window frame connecting it with the roof is constituted by bearing strips (8), adjacent to the side window frame members (11), protruding beyond the outline of the window frame members on its opposite sides.
A roof window according to any one of the claims 1 to 5, characterised in that said hinges are pivoting hinges (5) for opening the window sash in the pivoting mode, said pivoting hinges (5) being installed in the middle section of the length of the window side frame members (11, 19), above the middle of the window height.
A roof window according to any one of the claims 1 to 5, characterised in that said hinges are tilting hinges (9) for opening the window sash in the tilting mode, said tilting hinges (9) being situated in use near the top edge of the window, and in that arms (91) terminated with pivoting hinges (5) are seated in said tilting hinges (9), while both the tilting hinges (9) and the arms (91) are situated in use on the top surface of the window frame.
A roof window according to any one of the claims 1 to 5, characterised in that said hinges are tilting hinges (9) for opening the window sash in the tilting mode, said tilting hinges (9) being situated in use near the top edge of the window, and in that the window sash is seated directly in said tilting hinges (9).
A roof window comprising a window frame with fitting for a roof window, according to claim 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8, characterised in that the window frame members seated in the roof structure are made of an insulating material, preferably a porous one.
A roof window according to any one of the claims 1 to 9, characterised in that the window frame comprises an additional frame (7), preferably made of wood, situated in use on the internal side of the window frame, the locking elements of the window frame being installed on said additional frame (7) and mating with their respective locking elements mounted on the window sash.
A roof window according to any one of the claims 1 to 10, characterized in that the structural elements (2, 8) comprise installation elements (24, 84) for connection of the window frame with the flashing (35) of the window, the installation elements being located in use on the top surface of the window frame on the external side of the window.