SE505836C2 - Restoration cladding for rooms, especially bathrooms and procedure for restoration of such rooms - Google Patents

Abstract

An interior lining for the restoration of bathrooms comprises a floor unit (18), a ceiling unit as well as a plurality of walls constructed by pre-fabricated boards extending between said units. The shell is kept in place in the room by means of three sets of fastening profiles (7, 8, 9), located at different levels, applied on the inside of the walls of the room, <u>viz.</u> a lower profile set (7) placed close to the floor of the room, an upper profile set (8) placed at a distance below the ceiling of the room and an intermediate profile set (9) placed between said sets. The boards forming the walls of the shell consist of upper and lower part boards (15), the heights of which are determined by the level difference between the upper fastening profiles (8) and the intermediate profiles (9) and the level difference between the intermediate profiles (9) and the lower fastening profiles (7) respectively.

Description

15 20 25 30 35 505 836 2 existing wall by means of hidden screws. However, a disadvantage of this known wall panel has been found to be that its length essentially corresponds to conventional room height (ie 2.0 - 2.2 m).

This means not only that the boards as such become heavy (25-35 kg) and difficult to handle, but also that various surface-mounted bathroom details, such as tap water taps and pipes for these, towel rails, etc., must be fastened afterwards in the mounted boards; in practice by means of through screws and / or expander bolts. In other words, holes must be drilled in the boards afterwards, which entails an obvious risk of water penetration through the completed cladding. The room-high length of the individual board also entails a latent risk of cracking in tiles and tile joints insofar as the board - due to its large weight - may be exposed to considerable bending stresses in connection with transport and handling. The personnel who have to carry out the restoration are also exposed to ergonomic stresses in connection with the heavy discs being lifted and carried.

II E. _ E 1. The present invention aims at obviating the above-mentioned disadvantages of the prior art and creating a restoration cladding intended in particular for bathrooms of improved design. A basic purpose is thus to create a cladding whose components, in particular wall panels, are easy to handle and can be mounted without having to be subsequently pierced by boreholes or the like for attaching tap water taps and similar details. A further object is to create a cladding whose wall panels do not require screws or similar fastening elements for their assembly. One purpose is also to create an upholstery that is aesthetically pleasing and that offers great flexibility with regard to the required pipelines both in the form of tap water pipes and evacuation pipes, for example from bathtubs and / or washbasins. The cladding must also be able to be installed quickly and withstand moisture loads without giving rise to mold or other moisture damage. Another object is to create a cladding whose various components can be aligned in horizontal and vertical planes in a simple manner, even if the existing room has uneven floors and walls.

According to the invention, at least the basic object is achieved by means of the features stated in the characterizing part of claim 1. Preferred embodiments of the restoration clothing according to the invention are further defined in the dependent claims 2-7.

In addition to the dressing itself as such, the invention also relates to a method for restoring such rooms as bathrooms.

The features of the method according to the invention appear from claims 8 and 9.

H11 .. 113 ..

The drawings are: Fig. 1 a perspective view illustrating a bathroom freed from previous equipment in a stage in which a number of fastening profiles are mounted on the interior walls of the room, Fig. 2 a similar perspective view showing the same bathroom after a floor drain unit has been mounted on site, Fig. 3 a Fig. 5 is a perspective view showing the bathroom after a cassette and a number of wall panels have been mounted, Fig. 4 is a perspective view of the room after the walls have been completed and a floor unit and a ceiling unit have been installed, Fig. 5 is an exploded perspective view illustrating a number of components Fig. 7 shows a section through an upper fastening profile according to the invention, Fig. 8 a partial section showing the same fastening profile arranged against a wall, a roof unit and a wall part plate being connected to the profile, Fig. 9 a section through a lower fastening profile according to the invention. Fig. 10 a partial section of the same profile in the state of use, Fig. 11 a section n through a edging strip according to the invention, Fig. 12 a section through an intermediate fastening profile according to the invention, Fig. 13 a partial section showing the edging strip according to Fig. 11 mounted in an intermediate fastening profile according to Fig. 12 attached to a rear wall, 10 15 20 25 30 35 Fig. 14 is a section through a drawer profile according to the invention, Fig. 15 is a section showing the drawer profile according to Fig. 14 in the state of use, wherein a edging strip according to Fig. 11 has been put in place, Fig. 16 a partial section showing the joint strip according to Fig. 16 in connection with two adjacent wall part panels, Fig. 18 a cut side view of a joint strip according to Fig. 16, 19 a cut front view of the same joint strip, 20-25 sections and detailed views illustrating a corner connection between adjacent wall part panels included in the cladding according to the invention, more specifically in connection with an inner corner, and Figs. 26-30 an analogue corner connection in connection with In an outer corner.

I J. 3] 1. . Fig. 1 shows an existing, restoration-ready bathroom delimited by a floor joist 1, a ceiling joist 2 and a number (usually four) of walls 3, 3 ', two of which are shown in the figure. In Fig. 1, the following measures have been taken. A previously existing floor drain 4 has been eliminated, for example by filling with mortar. A long narrow recess 5 has been accommodated in the floor layer 1, more precisely to accommodate a floor well unit. Through this recess a trunk 6 can also be laid for waste water (as well as for tap water pipes, although these are not shown in Fig. 1).

Furthermore, the prevalent details of the walls 3, 3 ', such as brackets, hangers, cranes, etc., have also been removed from the walls, any loose insides have been freed from tidy surface material.

Fig. 1 also shows how certain components in the new cladding have been installed. More specifically, three sets of fastening profiles 7, 8 and 9 located at different levels have been applied to the walls, as well as a corner profile 10 in the transition between the two existing walls 3, 3 '. Fig. 2 shows how a floor drain unit 11 is mounted in the recess 5. This unit has the shape of a plate with a pipeline for guiding wastewater from an inlet 12 to the main pipe 6. On the top of the drawer there is a frame 13 for later connection of a special cassette.

Fig. 3 shows a cassette mounted on the floor well unit 11 which in the preferred embodiment comprises two halves or parts 14, 14 '. The cassette parts can be attached to the fastening profiles 7, 8, 9 in a suitable manner (not shown), and contain various functional components such as a flushing water tank for a toilet, heating elements for heating towels, pipes and connections for connecting tap water pipes, etc. The cassette can in its entirety placed adjacent to a corner of the room as indicated in Fig. 3. It should be noted that the upper part of the cassette ends at the level of the upper mounting profile 8.

Furthermore, Fig. 3 illustrates how a number of prefabricated, tiled wall part panels 15 have been applied to the walls, more specifically in an upper set between the upper fastening profile 8 and the intermediate fastening profile 9 and a lower set between the intermediate fastening profile 9 and the lower fastening profile 7. On the The intermediate mounting profile 9 applied to the wall 3 has also been fitted with a special drawer profile 16 which is shown in detail in Figs. 14 and 15. On the intermediate mounting profile 9 which is attached to the wall 3 ', it is indicated how a covering table strip 17 is mounted. The nature of this edging is shown in Fig. 11.

Fig. 4 shows a further working step in which the walls are completely clad with wall part panels 15, and a floor unit 18 is installed on the floor joist 1. Furthermore, a roof unit 19 has been mounted on the upper fastening profiles 8.

The floor unit 18 is composed of a plurality of sub-panels 18 'with an elongated, rectangular shape. In practice, these floor part panels can have a width in the range 30-60 cm, the panels extending perpendicular to the wall 3 in connection with which the floor well unit 11 is connected. Each sub-disc includes a plurality of level adjusting elements 20 which are shown in detail in Fig. 10.

In practice, the element 20 can advantageously consist of an externally threaded sleeve with an internal key socket 21 and with a bottom in which an expander screw 22 can be fastened. The sleeve is screwed down through a heel in the floorboard 18 'which in the relevant area can be level adjusted by rotation of the sleeve. After completion of the adjustment, the upper part of the sleeve is cut off, and the expander screw 22 fixes it while making it impossible to lift the floorboard. The roof unit 19 is also advantageously composed of a number of elongate, rectangular sub-panels 19 'which are supported by the upper set of fastening profiles 8.

Reference is now made to Fig. 5, which constitutes an exploded view illustrating vital components included in the clothing according to the invention. The figure shows how the aforementioned wall part panels 15 have a rectangular shape. In practice, the individual slab can have a height of 100 cm and a width of 60 cm and be composed of a carrier or frame 23 of pressed sheet metal and a surface layer of tiles 24. These tiles can have the dimensions 20 x 15 cm, wherein the plates are arranged in five vertically separated rows with four plates in each row. A partial disc of this kind in practice has a weight in the range of 12-15 kg. Along opposite long side edges, the partial discs have 15 grooves for receiving special joint strips 25.

Fig. 5 further shows how all fastening profiles 7, 8, 9 are fastened by means of screws 26 using special spacers 27 between the room inner wall and the inside of the fastening profile. These washers can advantageously consist of the known type which has an inclined slot which enables the washer to be hung on a screw temporarily fastened to the wall. The washer can have a comparatively large surface area, eg 10-30 cm 2, and a thickness of 1 to 2 mm. Such washers enable easy alignment of the fastening profiles so that they are located in a common vertical plane on the outside of each individual wall. In the event that irregularities occur in the existing wall, a number of spacers can thus be applied between the individual fastening profile and the bottom of the unevenness, thereby ensuring that the fastening profile can reliably maintain its straight original shape even if it is applied to even very uneven wall surfaces. Direction of the profiles is already taken in connection with the initial installation step illustrated in Fig. 1.

Fig. 5 further shows a pipe profile 28, the nature of which is shown in more detail in Fig. 10. In an upper flange of this pipe profile, recessed holes 29 for drainage pipes are, for example, from a washbasin or a bathtub. A lower, not shown hole in the lower flange of the pipe profile is connected in practice to the inlet 12 of the floor well unit 11.

Referring now to Figures 7 and 8, which show in detail the design of the upper fastening profile 8. More specifically, this profile consists of a hollow profile which comprises a mounted web 30 in the assembled condition from which two vertically separated flanges 31 extend, 32 of which the upper flange 31 is wider than the lower one and has the task of supporting the roof panels 19 '.

The lower flange 32 has a width which is only slightly greater than the thickness of each wall part plate 15. At its edge removed from the web 30, the lower flange 32 merges into a downwardly directed skirt 33 which together with the web 30 delimits a groove 34. The skirt 33 in turn passes at its lower edge in an inclined intermediate flange 35 connected to the free end edge of the upper flange 31 with a shape similar to the shape of a conventional wooden roof strip. As is clear from Fig. 8, the depth of the groove 34 is so great that the upper edge of the wall part plate 15 is at a level below the flange 32 in the mounted condition of the plate. Fig. 8 further shows how the vertical web 30 of the fastening profile 8 is spaced from the room inner wall 3 by means of washers 27.

Fig. 9 shows how the lower fastening profile 7 is cross-section substantially L-shaped and comprises a vertical, comparatively wide web 36 and a flange 37 projecting at an angle from its lower edge. The angle between the web and the flange is most suitably 90 °. In the area of the upper part of the web, a cross-section substantially T-shaped, strip-like portion 38 is formed. This T-strip portion has partly an upper flange 39 which together with the web delimits an upwardly opening groove 40, and partly a lower flange 41 which together with the web delimits a downwardly opening groove 42. In the upper groove 40 a lower gripping flange 43 can be received on the individual wall part plate, as shown in Fig. 10. In the lower groove 42 an upper gripping flange 44 on the aforementioned pipe profile 28 can be received.

As can be seen from Fig. 10, said gripping flange 43 can be constituted by a bent edge portion on the plate 23 which forms the body of the tile layer 24. In other words, the upper flange 39 on the T-strip portion 38 engages between the gripping flange 43 and the lower edge of the tile layer 24. Fig. 10 further shows how the outermost edge portion of the individual floorboard 18 'is supported by the lower, angled flange 37 of the fastening profile 7, possibly via a spacer 45. It is further shown how a layer laid on the floor unit mat 46 is extended along the vertical life 36 of the mounting profile.

To enable this, the upper part of the back piece of the drawer profile 28 is displaced laterally relative to the back piece in general, whereby a gap 47 is formed to accommodate the pulled-up edge piece of the mat.

Reference is now made to Figs. 11-13, which show how the intermediate fastening profile 9 comprises a life 48 in the applied condition, which on its one side has two vertically separated, cross-sectionally substantially T-shaped, strip-shaped portions 49, 50.

The upper T-strip portion 49 has a downwardly directed flange 51 which is wider than an opposite upwardly directed flange 52 of the lower T-strip portion 50. The flange 51 together with the web 48 forms a groove 53 which is deeper than the groove 54 delimited by the web and flange sen 52. These grooves 53, 54 are intended to co-operate with gripping flanges 55, 56 in the form of bent edge portions of a plate 17 'which form a carrier for a layer 17 "of tiles included in the edging 17. The distance between the gripping flanges 55, 56 free edges are slightly smaller than the distance between the bottoms of the grooves 53, 54. Because the upper groove 53 is deeper than the lower groove 54, the edging strip can be hooked into the intermediate fastening profile 9 by first raising the upper gripping flange 55 in the upper groove 53, after which the lower flange 56 can be dropped into the groove 54.

The two T-strip portions 49, 50 further have upper and lower flanges 57, 58, respectively, which together with the web 48 delimit two further grooves 59 and 60, respectively. In the groove 59 lower gripping flanges 43 of the upper wall part plates 15 can be inserted, while upper gripping flanges 43 of the wall part panels in the lower set of panels can be inserted from below and up into the groove 60. The intermediate strip profile 9 is also fixed to the rear wall via spacers 27 and by means of screws 26.

The drawer profile 16 shown in Fig. 14 comprises a top piece 61, a back piece 62, a bottom piece 63 and a front piece 64. In connection with the upper part of the back piece, a projecting part having upper and lower gripping flanges 55 'N 15 20 is formed. 30 35 505 836 9 resp 56 '. These gripping flanges can be applied in the grooves 53, 54 in the same way as the corresponding gripping flanges on the edging strip 17.

. The front piece 64 has a longitudinal narrow longitudinal opening 65 which is delimited at the top by a bead in which a groove 53 'is included and which at the bottom borders on a lower groove 54'.

It should be obvious that a cover strip 17 can be applied in and cover the opening 65 by hooking the gripping flanges 55, 56 in the grooves 53 ', 54', as shown in Fig. 15. The drawer profile 16 can include tap pipes 66 for tap water in the form of both hot water as cold water. Holes for tap water of the type indicated in Fig. 6, 67, 67 'can be drilled in the lower part 63 of the drawer profile.

The joint strip 25 shown in Figs. 16-19 comprises a back piece 68 and a bead 69 projecting therefrom, preferably central, which at a distance from the back piece has two laterally projecting projections 70, 70 'for engagement with grooves 71 in the wall part panels. 15 vertical long side edges. These grooves 71 are formed between the tile layer and a bent edge portion 43 on the plate 23 which forms the support of the board. It should be particularly noted that the central bead 69 projects a distance from the projections 70, 70 ', this projecting piece forming a spacer element which precisely determines the width of the joint between adjacent wall part panels. Fig. 19 shows whether the projections or flanges 70, 70 'are longer than the back piece 68, whereby projecting end portions are formed which can be applied in the grooves 60, 40 in the fastening profiles 9, 7 and in the grooves 34, 59 in the profiles 8. , 9.

Reference is now made to Figs. 20-25 which illustrate how the corner profile 10 comprises two flanges 74 extending at right angles to each other between which there is a middle piece 75.

This center piece is in the form of a hollow profile which is longer than the angular flanges 74 as shown in Fig. 24. In this way upper and lower end portions 75 ', 75 "are formed, which have slots 76 for connection to the upper and lower fastening profiles 8, 7. its inside, the middle piece 75 has a groove 77 delimited between two beads for snapping a cross-sectional arcuate cover strip 78, more precisely by pressing a central rib 79 into the groove 77. Fig. 25 shows how the corner profile 73 is fastened in the inner corner between the walls 3, 3 'by means of screws and spacers.After the wall part plate in question (not shown) is connected to the corner profile, the cover strip 78 is fastened to hide the joint gap between the part plates.

An analogous corner profile 80 for external corners is shown in Fig. 27. Also in this case, the corner profile includes a groove 81 delimited between beads in which a central rib 82 of a cover strip 83 can be snapped.

Finally, reference is made to Fig. 6 which illustrates the completed restoration cladding. Unlike Fig. 4, Fig. 6 shows how the floor mat 46 has been applied to the floor unit built up of the floorboards 18 '. In addition, a toilet seat 84 has been applied to the cassette 14. Furthermore, a washbasin 85 and associated base cabinets have been installed, as well as a bathtub 86. Other, not shown details can also be applied to the walls.

The installation of the various components included in the upholstery according to the invention takes place in the following order.

After the existing bathroom has been cleaned of older details, the fastening profiles 7, 8, 9 and the corner profiles 10 as shown in Fig. 1 are fixed. Then the floor drain unit 11 according to Fig. 2 is mounted and on this the cassette halves 14, 14 '. In the next step, the tile-covered wall part panels 15 are hooked one by one, first in the lower batch between the intermediate fastening profiles 9 and the lower ones and then in the upper batch between the upper and intermediate fastening profiles 9. Between adjacent joint strips 25 of the type shown in Fig. 16. the fastening profiles 7 the fastening profiles 8 sub-discs are inserted A drawer profile 16 is hooked into the intermediate fastening profile 9 on the wall 3, and edging strips 17 are hooked partly to the drawer profile 16 and partly to the intermediate fastening profile 9 on the wall 3 '. Furthermore, the floor slabs 18 'are mounted on the existing floor floor 1 and are weighed by means of the level adjusting elements 20 so that a correct inclination towards the floor well unit 11 is obtained. The roof panels 19 'are laid on the upper fastening profiles 8 to form a ceiling as shown in Fig. 4. Furthermore, the cover strips 78 are applied by snapping onto the corner profiles 10. Finally, the toilet seat 84, the washbasin 85 and the bathtub 86 are installed.

HE ..: _31 By building up the walls of the cladding of sub-panels with a limited length or height in two height-separated sets, it is gained that the weight of the panels is limited at the same time as various bathroom details, such as tap water taps, can be attached in a simple and expedient manner on the intermediate attachment profile at waist height. This means that the wall panels do not need to be drilled afterwards to enable the installation of the required details (in this context it should be pointed out that special wall part panels for carrying the washbasin can be prefabricated with brackets for the washbasin). Furthermore, the finished upholstery acquires an aesthetically pleasing appearance through the presence of the edging between the upper and lower sets of wall part panels. As indicated in Fig. 5, these edging strips 17 can be made with special patterns which break against the otherwise single-colored tiles included in the sub-panels 15. By attaching not only the wall sub-panels themselves but also all mounting profiles 7, 8, 9 at a distance the existing inner wall ensures that air can envelop the shell formed by the wall panels, the ceiling unit and the floor unit in a versatile and free manner. This in turn ensures that mold formation and other moisture damage are effectively counteracted. In addition, the cladding according to the invention allows the various components to be mounted in an extremely fast and efficient manner, above all in that the wall part panels can be applied only by the simple measure of being hooked onto the fastening profiles; ie without the need for screws or the like.

TH fr]. E..

The invention is not limited only to the embodiment described and shown in the drawings. Although tiled wall part panels are preferred in practice, it is thus conceivable to use part panels that are clad or surface-treated in another way. Furthermore, the general inventive concept is also applicable in connection with the restoration of rooms other than bathrooms.

Claims (9)

5 10 15 20 25 35 505 836 il Restoration cladding for rooms, in particular bathrooms, comprising a shell composed of a floor unit (18), a ceiling unit (19) and a plurality of walls extending between these units made up of prefabricated boards, each of these components included in the shell are arranged at a certain distance inside the corresponding parts of a room free from installations to ensure that the shell is comprehensively enclosed by air gaps, and whereby the shell is held in place in the room by means of sets of fastening profiles located at different levels arranged on the inside of the walls (3) of the room, namely a lower profile set (7) placed near the floor of the room (1) and an upper profile set (8) placed at a distance below the ceiling (2) of the room, characterized in that between, preferably in the middle between the lower and upper profile sets (7, 8) an intermediate profile set (9) is placed, and that the plates forming the walls of the shell consist of upper and lower part plates (15), the height of which is determined by level the difference between the upper mounting profiles (8) and the intermediate profiles (9) and the level difference between the intermediate profiles (9) and the lower mounting profiles (7). Restoration cladding according to Claim 1, characterized in that the upper fastening profile (8) consists of a hollow profile comprising a vertical web (30) from which two vertically separated flanges (31, 32) extend, of which an upper (31) (32) and has the task of supporting the roof unit (19), while the lower flange (32) has a width wider than a lower one which is only slightly larger than the thickness of a wall part plate (15) and passes over in a downwardly directed skirt (33) which in turn at a lower edge merges into one (35) connected to the free end edge of the upper flange (31), and which together with the vertical web (30) delimits a downwardly opening groove (34) for receiving an upper portion of the single wall part plate (15) separated by the single flange. 10 15 20 25 35 505 836 \ 3 Restoration dressing according to claim 1 or 2, characterized in that the individual intermediate fastening profile (9) comprises a web (48) from which project two vertically separated, cross-sectionally substantially T-shaped, molded portions (49) , 50) of which an upper (49) has a downwardly directed flange (51) which is wider than an opposite, upwardly directed flange (52) of the lower T-strip portion (50), said flanges (51, 52 ) together with the web form grooves (53, 54) for receiving a edging strip (17) and / or a drawer profile (16) which on the inside have upwardly and downwardly directed gripping flanges (55, 56; 55 ', 56'), and that an upwardly directed flange (57) on the upper T-strip portion together with the web forms an upwardly opening groove (59) for receiving a lower gripping flange (43) on each upper wall part plate, while a downwardly directed flange (58) on the lower The T-strip portion together with the web forms a downwardly opening groove (60) for receiving an upper gripping flange on each lower wall part plate. . Restoration clothing according to Claim 3, characterized by a box profile (16) which can be fastened to the intermediate fastening profile (9) and is provided on the rear side by having a gripping flange (55 ', 56') arranged to be hooked between the T-strip portions (49, 50) of the intermediate mounting profile and which has a longitudinal access opening (65) in a front side which is delimited by profile edge portions with opposite grooves (53 ', 54') for receiving gripping flanges (55, 56) of a edging strip ( 17). Restoration clothing according to one of the preceding claims, characterized in that the lower fastening profile (7) is substantially L-shaped in cross section and comprises a vertical web (36), a projection (37) projecting at an angle from its lower part and a cross-sectionally substantially T-shaped, strip-like portion (38) located in the area of the upper part of the waist, the lower flange of the profile having the task of supporting outer edge portions of the floor unit (18), and that the T-strip portion has parts (36) delimiting an upward flange an upper flange (39) which, together with the web, opens grooves (40) for receiving a lower gripping flange (43) of each lower wall part plate (15), and a lower flange (41) which together with the web defines a downwardly opening track (42) to 10 20 25 30 35 505 836 IL! if necessary, receive an upper gripping flange (44) of a separate pipe profile (28) with the task of directing water to a floor well unit (II). Restoration cladding according to one of the preceding claims, characterized in that a separate joint strip (25) (68) and a central bead (69) projecting therefrom are arranged for interconnection of laterally adjacent wall part panels (15). distance from the back piece comprising a back piece has two laterally projecting projections (70, 70 ') for engaging grooves in the side edges of the wall part panels. Restoration liner according to any one of the preceding claims, (10) at right angles to each other extending flanges (74) between characterized by a corner profile which have a middle piece (75) which is longer than the angle flanges to form upper and lower from these protruding end portions (75 ', 75 ") which have slots (76) for connection to said upper and lower fastening profiles (8, 7). the middle piece (75) has a groove (77) delimited between protruding beads for snapping a cross-sectional arcuate cover strip (78). A method of restoring rooms, in particular bathrooms, by constructing a cladding comprising a shell joined together (18), (19) and a plurality of walls extending between these units made up of prefabricated parts of a floor unit and ceiling tiles. , each of these components included in the shell being arranged at a certain distance inside corresponding parts of a room free from installations to ensure that the shell is completely enclosed by air gaps, and wherein the inner walls of the room freed from installations are mounted sets of fastening profiles at different levels, namely a first lower profile set (7) placed near the floor of the room (1), and a second, upper profile set (8) placed at a distance below the ceiling of the room (2), characterized therefrom , that a third profile set (9) is placed between, preferably between the lower and upper profile sets (7, 8), the fastening profiles being aligned on each wall in such a way comprising two ' 10 505 836 15 that they are located in a common vertical plane regardless of any irregularities in the existing inner wall, and that between the fastening profiles are mounted upper and lower part plates (15) whose height is determined by the level difference between the upper fastening profiles (8) and the intermediate profiles (9) respectively the level difference between the intermediate profiles (9) and the lower fastening profiles (7). Method according to claim 8, characterized in that the individual sub-disc (15) is applied to the fastening profiles (7, 8, 9) by hooking gripping flanges (43) in grooves in the fastening profiles.