Building board

Abstract

This invention relates to a building board (1), comprising a gypsum-bound and / or cement-bound basic board (2), and a method for manufacturing such a building board (1), wherein the building board (1) comprises a mounting side (3), for fastening this building board (1) against a background, wherein the basic board (2) is provided with first click means (9) on a first lateral side (5) and wherein the basic board (2) is provided with corresponding click means (1) on a second lateral side, which are provided for realising a click connection with the first click means (9) of a similar building board (1), wherein the first click means (9) and / or the second click means (10) comprise a click leg (43) comprising a core (22), which is part of the basic board (2), wherein this core (22) is provided with a layer of plastic (37, 38).

Description

BUILDING BOARD

[0001] This invention relates to a building board, comprising a gypsum-bound and / or cement-bound basic board, the building board comprising a mounting side, for fastening this building board against a background, the basic board being, on a first lateral side, provided with first coupling means and the basic board being, on a second lateral side, provided with corresponding second coupling means, provided for realising a coupling with the first coupling means of a similar building board.

[0002] Gypsum-bound and / or cement-bound building boards typically have a recessed / bevelled side relative to the sight face on both lateral sides, such as for example known from EP0006098A1 . Such boards are placed next to one another, screwed to support profiles, this with the recessed / bevelled sides contiguous, so that these recessed / bevelled sides together form a cavity, which may be filled with grout for finishing the connection between both boards. Mounting and finishing such building boards for building up a wall is not only laborious. Such as wall may neither be reused after mounting and finishing. When demounting such building boards in renovation or demolition, they are typically dumped.

[0003] It is known to provide such gypsum-bound and / or cement-bound building boards with coupling means to simplify mounting quite a bit.

[0004] Thus, it is already known from US2021 / 0017764A1 and WO2018 / 172959A2 to provide such building boards with coupling means for mutually fastening them, the coupling means being a coupling tooth of the one panel provided in a corresponding groove of the other panel to mutually fasten the panels. However, these coupling means are manufactured from brittle material, so that they are easily breakable upon manipulation and so that these building boards are still difficult to reuse after demounting.

[0005] It is already known from US2,015,744A, NL1043126B and EP3818221 B1 to provide the lateral sides of such a building board with corresponding click profiles, for intercoupling the building boards using a click connection. Moreover, it is described in NL1043126B and EP3818221 B1 that gypsum boards may be realised therewith which may easily and cleanly be demounted after use, so that the gypsum boards may serve as such again and the environment is not burdened with gypsum waste. However, this object is only partially achieved in practice. Such a building board is not easily adjustable for size, since the gypsum-bound and / or cement-bound building boards are preferably adjusted for length with a utility knife and, for the click profiles, typically a grinding wheel is needed to be able to process them for length. Therefore, the mounting remains quite laborious. Moreover, the connection of such a firm click profile to a brittle gypsum-bound and / or cement-bound basic board is susceptible to breakage upon manipulation, so that these building boards are, in practice, still difficult to reuse after demounting. The fastening of the click profiles to the cardboard layers of the gypsum boards as described in EP3818221 B1 may only reduce the risk of breakage in a limited manner.

[0006] It is the object of this invention to provide such a building board which is more easily mountable than and is less susceptible to breakage than the solutions from US2,015,744A, NL1043126B and EP3818221 B1.

[0007] This object of the invention is achieved by providing a building board, comprising a gypsum-bound and / or cement-bound basic board, the building board comprising a mounting side, for fastening this building board against a background, the basic board being provided with first coupling means on a first lateral side and the basic board being provided with corresponding second coupling means on a second lateral side, which are provided for realising a coupling with the first coupling means of a similar building board, and the building boards being provided for building up a wall therewith having a circular value index (CVI) which is greater than 1 , the circular value index (CVI) being determined as set down by the Circular Value Institute and as can be found onhttps: / / www.circularvalueinstitute.com / circularvalue. This CVI is further also defined and elucidated by examples in the white paper authored by Sarah Grison and Sofie Rapsaet and published in January 2024 by the Circular Value Institute. This white paper is freely available through the said website.

[0008] Here, the following is defined: residual value circular value = - - - x risk costs of reuse residual value, often called salvage value, is the estimated value of an asset at the end of its useful life. It represents the remaining value of the asset after depreciations, wear and ageing.

[0009] The costs of reuse refer to the costs associated with reusing products, materials or parts instead of throwing them away and procuring new ones.

[0010] The risks take into account all uncertainties which may affect the residual value or the costs of reuse.

[0011] With such a CVI, the labour cost of demounting such a building board is significantly lower than the residual value of the product.

[0012] A visible side of a building board according to the invention, away from the mounting side, is preferably provided to provide it with finishing material after placement. In a preferred embodiment, the building board is claddable with finishing material such that this finishing material is easily removable or reusable after cladding.

[0013] Wallpaper as a finishing material may, for example, be easily removable. A primer as finishing material is, for circular use of a building board,not necessarily removable, but when it is not removable, it is preferably easily reusable.

[0014] However, alternatively or additionally, it is also possible to already realise this visible side aesthetically finished, by providing the building board with finishing material during production thereof, before incorporating it in a wall, so that upon incorporating it in a wall, no additional finishing is required.

[0015] Just like in the prior art, the said background may, for example, comprise support profiles and the building board may be provided to fasten it against the support profiles. Alternatively and / or additionally, it is, for example, also possible to fasten the building board against, for example, wooden battens, or directly against an existing wall, etc.

[0016] A building board according to the invention will typically be provided for building up and / or cladding walls therewith, but may optionally also be provided for building up and / or cladding ceilings and / or floors. When a wall is discussed, this is also intended to include a ceiling or a floor.

[0017] Further, the building board is preferably manufactured from fire- resistant material and provided for building up a fire-resistant wall therewith, a wall built up therewith preferably achieving at least class EI30 according to the European El class.

[0018] The coupling means of a building board according to the invention may be realised in various manners. They may, for example, be designed as clamping means for mutually clamping adjoining building boards and / or as hooking means, for mutually hooking adjoining building boards and / or as click means, for realising a click connection between adjoining building boards.

[0019] The coupling means preferably extend in a profile shape over the whole length of the corresponding lateral side of the building board. Alternatively, butless preferably, multiple corresponding coupling means may be arranged to be distributed over the length of these lateral sides.

[0020] In a preferred embodiment, the first coupling means are designed as first click means and the second coupling means are designed as second click means for realising a click connection as a coupling. Preferably, these click means are designed comparably to click means in click laminate, preferably being intercouplable via a tilting movement. Alternatively, it is also possible to provide them to be intercouplable through a sliding movement.

[0021] The first click means may, more specifically, comprise a click groove, which is at least partially bounded by a click edge and the second click means may comprise a click tooth corresponding to the click groove, this click tooth being providable in the click groove of the first click means of a similar building board and being provided with a click edge, which is clickable behind the click edge of the first click means upon providing the click tooth in the click groove.

[0022] In a particular preferred embodiment, the first coupling means and / or the second coupling means are at least partially manufactured from plastic.

[0023] With such coupling means which are at least partially manufactured from plastic, the object of the invention may be achieved in a simple manner, also regardless of achieving a CVI greater than 1 .

[0024] Instead of a typical finishing of seams between gypsum-bound and / or cement-bound boards using a strip of mesh material and gypsum material and a finishing material, thanks to the coupling means, it may be ensured without such mesh material that both boards will not be displaced relative to each other, so that, for finishing, the seam between the building boards may more easily be finished seamlessly with fewer steps in a circular manner than a seam between gypsum-bound and / or cement-bound boards being fastened completely next to one another against a background. The object ofEP3818221 B1 is now considerably better achieved in that, by manufacturing these coupling means at least partially from plastic, the connection of these coupling means to a gypsum-bound and / or cement-bound building board may be designed to be less fragile, so that such a building board will break less easily upon manipulation. For mounting, this building board may also be adjusted for length more easily, in that both the gypsum-bound and / or cementbound basic board and the coupling means which are at least partially manufactured from plastic may easily be cut to size using utility knife for adjusting such a building board for length.

[0025] There are multiple possibilities for manufacturing the coupling means at least partially from plastic.

[0026] It is preferred to provide the first lateral side and / or the second lateral side with a coating to this end, with which a plastic layer may be applied to manufacture the coupling means at least partially from plastic. The thickness of an applied plastic layer may vary, depending on, for example, how strong a particular part of the coupling means needs to be to make the connection between building boards formed therewith, where any fastening means, such as, for example, screws, will be, etc.

[0027] Such a coating may, for example be applied by applying plastic in liquid condition by spraying the corresponding lateral side using spray nozzles and / or through brushing and / or through dip-coating and / or through rolling with one or more corresponding rollers, etc. and curing the plastic.

[0028] Alternatively and / or additionally, it is possible to manufacture the coupling means at least partially from plastic by providing corresponding first and second plastic coupling profiles which are fastened to respective first and second lateral sides of the basic board, for example through gluing and / or using a mechanical anchoring, etc. Such coupling profiles may, for example, be manufactured through extrusion.

[0029] When the coupling means are more specifically designed as click means, the first click means and / or the second click means preferably comprise a click leg comprising a core, which is part of the basic board, this core being provided with a layer of plastic to manufacture the coupling means at least partially from plastic, this such that this click leg is at least partially elastically deformable to be able to realise the click connection.

[0030] Because the core is part of the basic board, it is manufactured from gypsum-bound and / or cement-bound material. This allows the click leg to be designed to be sufficiently flexible, while, with a plastic layer, the required accuracy may be realised to be able to realise a good click connection. Thanks to this plastic layer, corresponding coupling means may accurately be provided into each other for tolerances to realise the click connection.

[0031] When this plastic layer is, moreover, applied through coating, it may also firmly be anchored chemically to the core.

[0032] As plastic, from which the coupling means are manufactured at least partially, for example, acrylonitrile butadiene styrene (ABS) may be used, or polyethylene (PE) or polypropylene (PP) or epoxy, etc. may be used. This plastic may be used to apply to the coupling means as a coating. This plastic may be provided with fibre reinforcement, for example with carbon or glass fibre, this fibre reinforcement preferably being applied in the width direction, optimised to increase the strength of the coupling and optimised so that this fibre reinforcement is also easy to cut with the basic board. Other possible materials for reinforcing the coupling means are curing gypsum, optionally analogously provided with additional fibre reinforcement. Other materials may be varnishes and / or resins curing under the influence of temperature, UV, .... and / or wood glues and / or contact glues.

[0033] During production, epoxy is thin-liquid and is suitable for impregnating fibre material so that this epoxy may be chemically anchored to the gypsumbound and / or cement-bound basic board. Epoxy has a good pressure strength and tensile strength to realise said coupling means therewith. This epoxy may optionally be provided with additives, such as for example colourants and / or a UV blocker, when it is, for example, provided to make the plastic part of the coupling means at least partially visible in a wall built up therewith. This may, for example, be done when the building board is already aesthetically finished on the visible side, by already providing it with finishing material during production thereof, before incorporating it in a wall. With the coupling means, then, for example, a differently coloured visible seam may be provided. Alternatively, it is more specifically also possible to manufacture the whole visible side of the building board from epoxy, all said finishing material being epoxy and allowing a wall to be, optionally, virtually seamlessly finished with such building boards.

[0034] When the coupling means are realised with said coupling profiles, these coupling profiles may, for example, be alternatively manufactured from PVC.

[0035] The coupling means of a building board according to the invention are preferably on a visible side, opposite the mounting side, and are manufactured from plastic.

[0036] By manufacturing the coupling means on this visible side from plastic, they are claddable such that, upon demounting the building board, a nice breakage may be obtained of finishing material applied to these coupling means, such as for example a filler and / or a paint layer and / or wallpaper, such as nonwoven wallpaper, etc. Fillers or paint or glue, etc. applied thereto may, moreover, simply be locally sanded off with fine sanding paper to prepare them for reuse without detracting from the functionality of these coupling means.

[0037] On the mounting side, the first coupling means preferably comprise a fastening lug, for mounting the building board to the first lateral side with screws or nails or fastening brackets, .... at the height of this fastening lug.

[0038] When the coupling means are said click means, then:- a said fastening lug may also be designed more specifically as a said click leg; and / or- a said click groove of the first click means is preferably bounded by this fastening lug; and / or- a said click tooth may be designed as a said click leg.

[0039] The coupling means are further preferably provided such that, in coupled condition between the first coupling means and the second coupling means, a providing cavity extends for receiving heads of screws or nails, or ... therein, so that these heads cannot hinder the coupling of the coupling means.

[0040] Alternatively, a said fastening lug may be provided with a screw slot for receiving the heads of screws or nails or, ... therein, so that these heads cannot hinder the coupling of the coupling means.

[0041] Alternatively or additionally, the second coupling means may be provided with a providing slot for this head.

[0042] When the fastening lug is provided with a screw slot, this screw slot is, on a side facing the basic board, preferably bounded by a wedge-shaped plane, so that, when screwing in screws, the heads of these screws engage with this wedge-shaped plane in a wedge-shaped manner in order to displace this building board such that the second coupling means of this building board are maximally driven into the first coupling means of an adjoining similar building board, so that the seam between this building board and the adjoining building board is minimised.

[0043] Instead of a fastening with screws or nails or other manners of fastening a building board according to the invention are also possible. More specifically, a building board according to the invention may, for example, be provided with a fastening strip on the mounting side. Such a fastening strip may, for example, be a spotlessly removable double-sided tape or may be Velcro.

[0044] When the building board is provided with a said fastening lug, the said fastening strip is preferably provided on the mounting side of this fastening lug.

[0045] The part of the building board on which such a fastening strip is applied, is preferably manufactured from plastic for good adhesion of a such a fastening strip. This is because, when such a fastening strip is adhered to the building board, it adheres better to plastic than to a gypsum-bound and / or cementbound basic board which is quite dusty and is difficult to remove dust from.

[0046] When it is provided on the mounting side of a said fastening lug, this fastening lug is, to this end, preferably adjacent to the mounting side, manufactured from plastic. The building board is, preferably adjacent to the first lateral side on this mounting side, manufactured from plastic manufactured over a strip wider than this fastening lug, the fastening strip also being applied to this strip beyond this fastening lug to be able to realise a firm connection between the building board and the background.

[0047] On the first lateral side, the building board is preferably virtually completely designed in plastic and / or is, on the second lateral side, preferably virtually completely designed in plastic, to reinforce the building board at the height of the coupling means using the plastic.

[0048] On the mounting side, the building board is preferably substantially free from plastic and / or on a visible side, opposite the mounting side, the building board is preferably substantially free from plastic.

[0049] Optionally, the building board may be virtually completely manufactured from plastic on the visible side, as, for example, described hereinabove when finishing this visible side in epoxy.

[0050] On the mounting side, the building board may, optionally, be virtually completely manufactured from plastic, to allow easy adhesion in different locations on this mounting side, for example for adhering fastening strips thereto.

[0051] The building board may further more specifically be provided with a recess on the lateral sides on a visible side, away from the mounting side, for example below the shape of a bevel, for forming a filling groove between two mutually fastened similar building boards.

[0052] Between two building boards clicked together, using these recesses, a filling groove is formed, which is fillable with various possible finishing materials.

[0053] Further, more specifically on a visible side, away from the mounting side, near each lateral side, the building board may be provided with a nose upstanding relative to the visible side. Such an upstanding nose may also be useful for said building boards not provided for building up a wall therewith having a circular value index greater than 1 and / or with gypsum-bound and / or cement-bound building boards not provided with said coupling means.

[0054] Thus, between two building boards clicked together, between two such upstanding noses, a filling groove may be formed, which is fillable with various possible finishing materials.

[0055] Thus, such a fillable groove may be filled with plaster or 2-component grout, etc.

[0056] In a preferred embodiment, a building board is provided with both a said recess, for example, in the form of a bevel, as of a said upstanding nose, preferably arranged adjacent to the corresponding recess.

[0057] This upstanding nose is also preferably manufactured from plastic.

[0058] Normally, when finishing a seam with such grout, the grout collapses a bit during drying. With this nose, it may be ensured that the filling groove may certainly be filled with sufficient grout, and that, during drying of the grout, when this grout collapses, this grout still remains on the visible side at the height of the outer surface of the basic board. Then, it is possible to sand off the upstanding nose, so that the whole outer surface of the building board becomes flat.

[0059] The object of the invention is further also achieved by providing an assembly for building up a wall, comprising support profiles for building up a background, and building boards, for fastening against these support profiles, the building boards comprising a first building board according to the invention as described hereinabove and comprising a second building board according to the invention as described hereinabove.

[0060] In addition, the object of the invention is also achieved by providing a wall, comprising a background, built up with support profiles and building boards, fastened against these support profiles, the support profiles and building boards being part of such an assembly and a coupling being realised between the first coupling means of the first building board and the second coupling means of the second building board.

[0061] In such a wall, the building boards may more specifically be cladded with wallpaper, like nonwoven wallpaper as a finishing material.

[0062] Alternatively and / or additionally, a finishing layer may be applied to the first coupling means of the first building board and to the second coupling means of the second building board. Such a finishing layer may, for example, comprise a grout, for example based on gypsum (finishing material) only applied at the height of these coupling means.

[0063] Prior to applying such a finishing material or as an alternative finishing material, de building board may, for example, also be provided with a primer and / or different paint. For circular use of such a building board, it is not necessary to be able to remove such a primer. As indicated hereinabove, such a primer may be removed at the height of the coupling means, for example using a fine sanding paper, so that it does not affect the functionality of the coupling means.

[0064] The object of the invention is also achieved by providing a method for manufacturing a building board comprising providing a gypsum-bound and / or cement-bound basic board, the building board comprising a mounting side, for fastening this building board against a background, the method comprising providing first coupling means on a first lateral side of the basic board and providing corresponding second coupling means on a second lateral side of the basic board, provided for realising a coupling with the first coupling means of a similar building board, the building board being provided for building up a wall therewith having a circular value index greater than 1 , with the above- mentioned benefits of such a building board. The following described methods may also be useful regardless of achieving a CVI greater than 1 .

[0065] The building board obtained with a method according to the invention is then preferably a building board according to one or more of the abovedescribed possible embodiments of a building board according to this invention.

[0066] The building board is then preferably also provided such that it is claddable with finishing material, this finishing material being easily removable or reusable after cladding.

[0067] Further, the building board is preferably manufactured from fire-resistant material and such that it is provided for building up a fire-resistant wall.

[0068] Particularly preferably, the first coupling means and / or the second coupling means are at least partially manufactured from plastic.

[0069] More specifically, the first coupling means may be designed as first click means and the second coupling means may be designed as second click means for realising a click connection as a coupling. The first click means and / or the second click means may then more specifically be designed with a click leg, comprising a core, which is part of the basic board, this core being provided with a layer of plastic.

[0070] More specifically, to this end, the first lateral side may be provided with a basic groove through milling, and the second lateral side may be provided with a basic tooth corresponding to the basic groove. The basic groove and / or the basic tooth may, more specifically, be provided with a layer of plastic to, respectively, provide the first lateral side with a click groove, which is at least partially bounded by a click edge as first coupling means and to provide the second lateral side with a click tooth corresponding to the click groove as second coupling means, this click tooth being providable in the click groove on the first lateral side of a similar building board and being provided with a click edge, which is clickable behind the click edge of the first click means upon providing the click tooth in the click groove.

[0071] Yet more specifically, to this end, the basic groove may be coated with plastic to provide it with a layer of plastic and / or the basic tooth may be coated with plastic to provide it with a layer of plastic.

[0072] The object of the invention is additionally also achieved by providing a method for building up a wall, comprising providing a first building board according to one or more of the above-described possible embodiments of a building board according to this invention, fastening this first building board against a background, providing a second building board according to one of more of the above-described possible embodiments of a building board according to this invention, and fastening this second building board to the first building board, by realising a coupling between the first coupling means of the first building board and the second coupling means of the second building board, such that the wall is a wall having a circular value index greater than 1 , with the above-mentioned benefits.

[0073] The wall may more specifically be cladded with finishing material, which is easily removable or reusable after cladding.

[0074] Further, the wall may more specifically be designed to be fire-resistant.

[0075] The said method for building up a wall may further comprise: cutting the building board and the coupling means of this building board with a utility knife transversely to the lateral sides of the first building board in order to shorten this building board before fastening this first building board against the background, this preferably when the coupling means are manufactured at least partially from plastic.

[0076] Further, the method may comprise: after coupling the second building board to the first building board, cladding the first building board and the second building board with wallpaper, such as nonwoven wallpaper.

[0077] In order to fasten such wallpaper, the visible side of the building board is preferably first provided with a primer and the wallpaper itself is preferablypre-glued first, to ensure a better adhesion of the wallpaper, this both on the gypsum-bound and / or cement-bound basic board and on the coupling means.

[0078] Alternatively and / or additionally the method may comprise: after coupling the second building board to the first building board, applying a finishing layer, such as for example a grout, for example gypsum-based, to the first coupling means of the first building board and to the second coupling means of the second building board.

[0079] When the first building board and the second building board are building boards with a said recess for forming a filling groove, the method further preferably comprises: after coupling a second building board to the first building board, filling the filling groove, formed by the recesses on the corresponding lateral sides, with grout, for example gypsum-based, as a finishing material.

[0080] When the first building board and the second building board are, moreover, building boards with a said upstanding nose, the method further preferably comprises:

[0081] after filling the filling groove, sanding off the upstanding noses.

[0082] When the background more specifically comprises support profiles arranged parallel to one another, each support profile comprising a mounting face, the first building board may, more specifically, be fastened with the mounting side against the mounting face of a said support profile, and overlap this mounting face, so that an edge of the first coupling means is adjacent to an edge of the mounting face. When the support profile is more specifically designed to be hollow, an access opening to this cavity is preferably adjacent to this edge, so that, when placing the first building board, this cavity can be engaged by a hand to easily fasten the building board to this support profile.

[0083] Alternatively, it is, for example, also possible to have the first building board overlap this support profile only partially, the edge of the first coupling means being arranged to be displaced relative to the edge of the mounting face. In this way, after coupling thereof with the first building board, the second building board will also partially overlap the mounting face of the support profile, so that this second building board becomes less susceptible to breakage at the height of the second coupling means.

[0084] The support profiles for building up the background are preferably support profiles for building up frames as a background, as described and shown in BE1024792B1 , W02019171280A1 and / or W02020065487A1 , the contents of which are incorporated in the present patent application by reference. This is because, with such support profiles, it is possible to simply circularly reuse not only the building boards, but also the support system with support profiles for building up a background for fastening these building boards, the circular value index for the whole wall with all its parts possibly being greater than 1.

[0085] When the first building board is a building board with a said fastening lug, the first building board may, for example, be screwed to the corresponding support profile using screws. Alternatively and / or additionally, it is possible, when the first building board is provided with a said fastening strip, to fasten this first building board to the corresponding support profile using this fastening strip. When this fastening strip is more specifically designed as Velcro, the corresponding support profile may, to this end, be provided with a Velcro corresponding to the Velcro of the first building board, so that the first building board may be fastened to the corresponding support profile using the Velcro.

[0086] The object of the invention is further also achieved by providing a method for demounting a wall, the wall - also regardless of achieving a CVI greater than 1- having been built up with an above-described method, the second building board being decoupled from the first building board bydecoupling the realised coupling and the first building board being detached from the background.

[0087] More specifically, when the first building board is a building board of which the first and / or the second coupling means are manufactured at least partially from plastic, the first building board may be sanded on the visible side, opposite the mounting side, at the height of these first and / or second coupling means, this preferably with a fine sanding paper.

[0088] When wallpaper is fastened to the wall as a finishing material, this wallpaper may be cut first with a utility knife at the height of the joint between the coupling means, before or during decoupling the second building board from the first building board.

[0089] Finally, the object of the invention is also achieved by providing a method for mounting a wall as described hereinabove - also regardless of achieving a CVI greater than 1 - where, as the first building board, a building board is provided which is obtained by demounting a wall with a method as described hereinabove.

[0090] This invention will now be elucidated in more detail with reference to the following detailed description of some embodiments of building boards, assemblies, walls and methods according to this invention. The intention of this description is exclusively providing elucidating examples and indicating further benefits and particulars of this invention, and should by no means be interpreted as a limitation of the scope of the invention or the patent rights claimed in the claims.

[0091] In this detailed description, reference numerals are used to refer to the appended drawings, in which:- Figure 1 perspectively shows a part of a background from support profiles, for fastening building boards according to the invention against this, during the build-up of the background;- Figure 2 perspectively shows a larger part of the background from Figure 1 , during the build-up of the background;- Figure 3 perspectively shows the background from Figure 1 , in built-up condition, some building boards according to the invention having been mounted thereto, a further building board being fastened against it;- Figure 4 perspectively shows a wall built up with the background from Figure 1 against which building boards according to the invention are mounted;- Figure 5 shows the wall from Figure 4, where the joints between the building boards are finished with a finishing layer;- Figure 6 shows the wall from Figure 4, where this wall is cladded with wallpaper;- Figure 7 shows the wall from Figure 4, where this wall is finished seamlessly;- Figure 8 shows the wall from Figure 7, where the building boards are demounted by decoupling a building board by decoupling the realised coupling between the respective coupling means of adjoining building boards;- Figure 9 shows the wall from Figure 7, where, when demounting the building boards, the wallpaper at the height of the joint between the coupling means is cut with a utility knife, for decoupling the second building board from the first building board.- Figure 10 shows a building board according to the invention in top plan view;- Figure 11 shows a part of the building board from Figure 10 in top plan view, at the height of the first coupling means thereof;- Figure 12 shows a part of the building board from Figure 10 in top plan view, at the height of the second coupling means thereof;- Figure 13 perspectively shows a part of the building board from Figure 10, with a view of the top side thereof, at the height of the first coupling means thereof;- Figure 14 perspectively shows a part of the building board from Figure 10, with a view of the top side thereof, at the height of the second coupling means thereof;- Figure 15 shows a part of the building board from Figure 10 in top plan view, at the height of the first coupling means of this first building board, together with a part of a second similar building board, at the height of the second coupling means of this second building board, during coupling of the first coupling means and the second coupling means;- Figure 16 shows the parts from Figure 15 in top plan view, in coupled condition;- Figure 17 shows a part of an alternative building board according to the invention at the height of alternative first coupling means in top plan view;- Figure 18 shows a part of an alternative building board according to the invention at the height of alternative second coupling means in top plan view;- Figure 19 shows a part of an alternative building board according to the invention at the height of alternative first coupling means and provided with a fastening strip in top plan view;- Figure 20 shows a part of an alternative building board according to the invention at the height of alternative second coupling means in top plan view;- Figure 21 shows a part of two intercoupled building boards according to the invention at the height of the intercoupled coupling means in top plan view;- Figure 22 shows the part from Figure 21 in top plan view, to which wallpaper is fastened;- Figure 23 shows the part from Figure 21 in top plan view, to which a primer is applied;- Figure 24 shows the part from Figure 21 in top plan view, to which a primer is applied and to which wallpaper is fastened;- Figure 25 shows the part from Figure 21 in top plan view, to which a primer is applied and to which a finishing layer is provided;- Figure 26 shows a part of two alternative intercoupled building boards according to the invention with bevels forming a filling groove at the height of the intercoupled coupling means in top plan view;- Figure 27 shows the part from Figure 26 in top plan view, where the filling groove is filled;- Figure 28 shows a part of two alternative intercoupled building boards according to the invention with bevels forming a filling groove and with upstanding noses, at the height of the intercoupled coupling means in top plan view;- Figure 29 shows the part from Figure 28 in top plan view, where the filling groove is filled;- Figure 30 shows the part from Figure 28 in top plan view, where the filling groove is filled and where the upstanding noses are sanded off;- Figure 31 perspective^ shows how a first lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using a brush, for forming first coupling means;- Figure 32 perspective^ shows how a second lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using a brush, for forming second coupling means;- Figure 33 perspective^ shows how a first lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using spray nozzles, for forming first coupling means;- Figure 34 perspective^ shows how a second lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using spray nozzles, for forming second coupling means;- Figure 35 perspective^ shows how a second lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using rollers, for forming second coupling means;- Figure 36 perspective^ shows how a first lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using rollers, for forming first coupling means;- Figure 37 perspective^ shows how a first lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using rollers, for forming first coupling means;- Figure 38 perspectively shows how a second lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using rollers, for forming second coupling means;- Figure 39 shows in cross section how a first lateral side of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating using rollers, for forming first coupling means;- Figures 40-42 schematically show how the lateral sides of a gypsum-bound and / or cement-bound basic board, provided with a profiling, may be provided with a plastic coating by dip-coating in a bath for forming first coupling means and for forming second coupling means.- Figure 43 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an embodiment according to the invention;- Figure 44 shows a support profile and a first building board fastened thereto from the wall from Figure 43 in more detail in top plan view at the height of the first coupling means;- Figure 45 shows the support profile and the building board fastened thereto from Figure 44 in top plan view, with a second building board coupled thereto from the wall from Figure 43;- Figure 46 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 47 shows a support profile and a first building board fastened thereto from the wall from Figure 46 in more detail in top plan view at the height of the first coupling means;- Figure 48 shows the support profile and the building board fastened thereto from Figure 47 in top plan view, with a second building board coupled thereto from the wall from Figure 46;- Figure 49 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 50 shows a support profile and a first building board fastened thereto from the wall from Figure 49 in more detail in top plan view at the height of the first coupling means;- Figure 51 shows the support profile and the building board fastened thereto from Figure 50 in top plan view, with a second building board coupled thereto from the wall from Figure 49;- Figure 52 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 53 shows a support profile and a first building board fastened thereto from the wall from Figure 52 in more detail in top plan view at the height of the first coupling means;- Figure 54 shows the support profile and the building board fastened thereto from Figure 53 in top plan view, with a second building board coupled thereto from the wall from Figure 52;- Figure 55 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 56 shows a support profile and a first building board fastened thereto from the wall from Figure 55 in more detail in top plan view at the height of the first coupling means;- Figure 57 shows the support profile and the building board fastened thereto from Figure 56 in top plan view, with a second building board coupled thereto from the wall from Figure 55;- Figure 58 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 59 shows a support profile and a first building board fastened thereto from the wall from Figure 58 in more detail in top plan view at the height of the first coupling means;- Figure 60 shows the support profile and the building board fastened thereto from Figure 59 in top plan view, with a second building board coupled thereto from the wall from Figure 58;- Figure 61 shows a part of two intercoupled building boards according to an alternative embodiment according to the invention at the height of the intercoupled coupling means in top plan view;- Figure 62 shows a part of two intercoupled building boards according to an alternative embodiment according to the invention at the height of the intercoupled coupling means in top plan view;- Figure 63 shows a part of two intercoupled building boards according to an alternative embodiment according to the invention at the height of the intercoupled coupling means in top plan view;- Figure 64 shows a part of two intercoupled building boards according to an alternative embodiment according to the invention at the height of the intercoupled coupling means in top plan view;- Figure 65 perspective^ shows the part from Figure 64;- Figure 66 shows a part of two building boards to be intercoupled according to an alternative embodiment according to the invention at the height of the coupling means in top plan view before the coupling thereof;- Figure 67 shows the part from Figure 66 in top plan view, in coupled condition;- Figure 68 shows a part of two building boards to be intercoupled according to an alternative embodiment according to the invention at the height of the coupling means in top plan view before the coupling thereof;- Figure 69 shows the part from Figure 68 in top plan view during the coupling thereof;- Figure 70 shows the part from Figure 68 in top plan view in coupled condition;- Figure 71 shows a part of two building boards to be intercoupled according to an alternative embodiment according to the invention at the height of the coupling means in top plan view before the coupling thereof;- Figure 72 shows the part from Figure 71 in top plan view during the coupling thereof;- Figure 73 shows the part from Figure 71 in top plan view, in coupled condition;- Figure 74 shows the part from Figure 71 in top plan view in coupled condition, where the filling joint is filled with grout;- Figure 75 shows a part of two building boards to be intercoupled according to an alternative embodiment according to the invention at the height of the coupling means in top plan view before the coupling thereof;- Figure 76 shows the part from Figure 75 in top plan view, in coupled condition;- Figure 77 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view, upon coupling and mounting a second building board;- Figure 78 shows the part from Figure 77 in top plan view with the second building board having been mounted;- Figure 79 shows a part of a wall, built up with support profiles and building boards fastened thereto according to an alternative embodiment according to the invention in top plan view;- Figure 80 shows a support profile and a first building board fastened thereto from the wall from Figure 79 in more detail in top plan view at the height of the first coupling means;- Figure 81 shows the support profile and the building board fastened thereto from Figure 80 in top plan view, with a second building board coupled thereto from the wall from Figure 79.

[0092] The walls (34) according to the invention shown in the Figures comprise support profiles (11 ), with which a frame is formed, and against which building boards (1 ) according to the invention are fastened.

[0093] Alternatively, it is possible, instead of providing such support profiles (11 ), to fasten such building boards (1 ) against, for example, wooden battens, or directly against an existing wall, etc.

[0094] The building boards (1 ) according to the invention shown in the Figures each comprise a cement-bound basic board (2). As cement-bound basicboards (2), known cement-bound and optionally fibre-reinforced, such as for example glass fibre-reinforced basic boards may be chosen. Alternatively and / or additionally, the basic board (2) may also be gypsum-bound. As gypsum-bound basic boards, known plasterboards and / or gypsum fibre boards may be chosen. More preferably, the basic board (2) is cement-bound and free from layers of cardboard (paper). However, in specific embodiments, it is also useful to provide a plasterboard as a basic board.

[0095] Preferably, the basic boards (2) also have good sound-damping and / or fire-resistant properties. More specifically, these may optionally also have good vapour barrier properties.

[0096] The building boards (1 ) comprise a mounting side (3) for fastening this building board (1 ) against a background, a visible side (4), opposite the mounting side (3), a first lateral side (5), a second lateral side (6), a top side (7), and a bottom side (8).

[0097] The basic board (2) of the building boards (1 ) shown is each time provided with first coupling means (9) on a first lateral side (5) and is provided with corresponding second coupling means (10) on a second lateral side (6), which are provided for realising a coupling with the first coupling means of a similar building board (1 ).

[0098] In the Figures, the building boards (1 ) are always placed vertically against said support profiles (11 ), where laterally adjoining building boards (1 ) are coupled with the said coupling means (9, 10) to form a wall. The said top side (7) of the building boards (1 ) is then arranged on the top side of the wall and the said bottom side (8) of the building boards (1 ) on the top side of the wall.

[0099] Alternatively, it is also possible to provide building boards (1 ) where also the top side (7) and the bottom side (8) are analogously provided with corresponding coupling means, so that multiple such building boards (1 ) arearranged contiguously one above the other and may be intercoupled to form a wall.

[0100] Still alternatively, such building boards (1 ) and any support profiles (11 ) and / or battens or the like may be used for building up a ceiling as a wall, or for forming a floor as a wall.

[0101] The building boards (1 ) and support profiles (11 ) shown are each provided for building up a wall (34) therewith having a circular value index greater than 1 .

[0102] Here, the building boards (1 ) are each claddable with finishing material (13, 14, 31 ) such that this finishing material (13, 14, 31 , 44) is easily removable or reusable after cladding.

[0103] The building boards (1 ) are also manufactured from fire-resistant material and provided for building up a fire-resistant wall (34) therewith, which preferably at least achieves class EI30 according to the European El class.

[0104] In most embodiments shown, the first coupling means (9) are designed as first click means (9) and the second coupling means (10) are designed as second click means (10) for realising a click connection as a coupling. The first coupling means (9) then each comprise a click groove (23), in which a click tooth (21 ) of the second coupling means (10) is providable. The click groove (23) and the click tooth (21 ) are then correspondingly provided with a click edge (24) so that, when providing the click tooth (21 ) in the click groove (23), these click edges (24) engage behind one another to realise the click connection. Such click means (9, 10) may be realised in quite some variants. In most embodiments shown, the click means (9, 10) are provided for intercoupling them through a tilting movement. In the embodiment shown in Figures 64-65, they are provided for intercoupling them through a sliding movement.

[0105] In alternative embodiments, the coupling means (9, 10) may, for example, be designed as clamping means for mutual clamping of adjoining building boards and / or as hooking means, for mutually hooking adjoining building boards. In the embodiment from Figures 77-78, thus, coupling means (9, 10) are shown, in the form of a tooth (9) on a first lateral side (5), providable in a groove (10) on a second lateral (6), intercouplable with a tooth-groove connection.

[0106] The first click means (9) and the second click means (10) are, in the embodiments shown with click means (9, 10) as coupling means (9, 10), each time manufactured at least partially from plastic (37, 38). Analogously, in alternative embodiments with alternative coupling means (9, 10), such as the embodiment from the Figures 77-78, these coupling means (9, 10) are preferably manufactured at least partially from plastic (37, 38).

[0107] In the embodiments shown in Figures 3-60, 66-70, and 77-81 , the first lateral side (5) and the second lateral side (6) are, to this end, provided with a coating (37, 38) manufactured from epoxy. Alternatively, other materials may also be used for this.

[0108] In the embodiments from Figures 61 -65 and 71 -76, the first lateral side (5) is provided with a first plastic coupling profile (37) in the form of a click profile (37) and the second lateral side (6) is provided with a second plastic coupling profile (38) in the form of a click profile (38). These plastic coupling profiles (37, 38) may, more specifically, for example be manufactured from PVC, this for example through extrusion, like the embodiments in Figures 61 - 65, or via coextrusion, like the embodiments from Figures 71 -76. Analogously, thus, for example, also coupling profiles may be provided in the form of corresponding clamping profiles and / or corresponding hooking profiles.

[0109] In embodiments with a basic board with layers of cardboard or paper, preferably, plastic is connected to one or more of these layers of cardboard or paper to manufacture the coupling means at least partially from plastic.

[0110] In order to provide the coupling means (9, 10) on the lateral sides (5, 6), the lateral sides (5, 6) of the basic board (2) may first be provided with a profiling with grooves and / or teeth, this for example through milling, where these grooves and / or teeth may be provided to be part of the coupling means (9, 10) and / or to be able to thereby realise a firm connection with a coupling profile (9, 10). Such lateral sides (5, 6) provided with a profiling by milling are preferably reinforced with plastic (37, 38). This plastic (37, 38) may, for example, be provided through a coating. The thickness of a then applied plastic layer (37, 38) may vary, depending on, for example, how strong a particular part of the coupling means needs to be to make the connection between building boards (1 ) formed therewith, where screws (12) will be, etc. In embodiments where the basic plate is provided with layers of cardboard or paper, this cardboard or paper will also be milled off. On the mounting side (3) and the visible side (4) of the basic board (2) then also some additional cardboard or paper is removed. The layer of plastic (37, 38) covering it, will preferably be provided in the form of a coating which may partially penetrate in the basic board and may keep the same thickness as the layer from cardboard or paper. In this way, the surfaces on the mounting side (3) and the visible side (4) may be designed to be flat. Optionally, to this end, the plastic may first be applied in a thicker layer, after which a part of the plastic may be removed through milling. Thus, the plastic can very accurately be removed by milling up to a same thickness as the cardboard or paper.

[0111] Thus, the first lateral side (5) may more specifically be provided with a basic groove (25) and the second lateral side (6) with a basic tooth (26) corresponding to the basic groove (25). The basic groove (25) and the basic tooth (26) may then be provided with a said coating (37, 38), as can be seen in Figures 31 -37. By providing the first lateral side (5) having such a basic groove (25) with a layer of plastic (37) in this way, the first lateral side (5) may be provided with a click groove (23), which is at least partially bounded by a click edge (24) as first coupling means (9). By providing the second lateral side(6) having such a basic tooth (26) with a layer of plastic (38) in this way, the second lateral side (6) may be provided with a click tooth (21 ) corresponding to the click groove (23) as second coupling means (10). This click tooth (21 ) is then providable in the click groove (23) on the first lateral side (5) of a similar building board (1 ) and is provided with a click edge (24), which is clickable behind the click edge (24) of the first coupling means (9) upon providing the click tooth (21 ) in the click groove (23). In the embodiments shown in Figures 10-20 and 66-70, the first click means (9) and the second click means (10) then comprise one or more click legs (43), comprising a core (2), which is part of the basic board (2), this core (22) being provided with a layer of plastic (37, 38). In alternative embodiments, like the embodiment from Figures 77-78, without click means, no said click edge (24) will be formed.

[0112] In order to apply the said coating (37), it may, for example, as shown in Figures 31-32, be applied manually with a brush (27) on the corresponding lateral sides (5, 6) profiled through milling, of the cement-bound basic board (2) Alternatively, plastic in liquid condition, as shown in Figures 33-4, may be applied on the corresponding lateral sides (5, 6) profiled through milling, by using spray nozzles (28). Still further alternatively, plastic in liquid condition may be applied to the lateral sides (5, 6) profiled through milling, by using rollers, as can be seen in Figures 35-39. With such rollers (29), in embodiments where the basic board (2) is provided with layer of cardboard, it is simpler to glue these layers to be fixed when forming coupling means (9, 10). In addition, it is also possible to apply plastic in liquid condition on the lateral sides (5, 6) profiled through milling, by dip-coating these lateral sides (5, 6) in a dip-coating bath (30), as illustrated in Figures 40-42.

[0113] In order to alternatively fasten coupling profiles (9, 10) to the basic board (2), they may then be provided with a number of grooves and / or toothings in which or over which corresponding parts of the coupling profiles (9, 10) may be provided and preferably also glued. In the embodiments from Figures 61 - 65, for example, slot-shaped grooves are provided, in which legs of thecoupling profiles (9, 10) are provided. In the embodiment from Figures 75-76, hook-shaped slots (47) are provided for providing corresponding hooks (46) of the coupling profiles (9, 10) therein. Centrally, the hooks for these coupling profiles (9, 10) are also designed as barbs, for mechanically anchoring the coupling profiles (9, 10) in the corresponding basic boards (2).

[0114] In simpler embodiments, like the embodiment from Figures 71-74, the basic board (2) may be provided in its original condition, where coupling profiles (9, 10) are provided to the corresponding lateral sides (5, 6) through gluing.

[0115] In the embodiments from Figures 10-20, 66-70, 64-65 and 75-81 , the coupling means (9, 10) are manufactured from plastic (37, 38) on a visible side (4) opposite the mounting side (3), so that the seam between two intercoupled building boards (1 ) may simply be finished seamlessly in a way in which the finishing material (13, 14, 31 , 44) applied thereto is also simply removable or reusable.

[0116] In the embodiments from Figures 10-67 and 79-81 , the first click means (9) comprise a fastening lug (18) on the mounting side (3), for mounting the building board (1 ) on this first lateral side (5) with screws (as can, for example, be seen in Figures 11-60, 66-67 and 77-78) or nails or fastening brackets (as can, for example, be seen in Figures 79-81 )... at the height of this fastening lug (18). This fastening lug (18) extends further on the first lateral side (5) than the rest of the first click means (9), so that it is easily accessible for providing screws or nails or fastening brackets.... therein or thereon. In the embodiment from Figures 77-78, the first coupling means (9) analogously comprise a fastening lug (18).

[0117] The coupling means (9, 10) are then further preferably provided such that, in coupled condition between the first coupling means (9) and the second coupling means (10), a providing cavity (42, 48) extends for receiving headsof screws or nails, or so that these heads cannot hinder the coupling of the coupling means (9, 10).

[0118] In the embodiments shown in Figures 11 -60 and 77-81 , to this end, the fastening lug (18) is provided with a screw slot (42) for receiving this head therein. In the embodiments as shown in Figures 46-48 and 66-67, a click leg (43) of the second click means (10) is provided with a providing slot (48) for this head.

[0119] In the embodiment from Figures 77-78, the screw slot (420 is, on its side towards the basic board (2), bounded by a wedge-shaped plane (49), so that, when screwing in screws (12), the heads of these screws (12) engage with this wedge-shaped plane in a wedge-shaped manner to maximally drive the first coupling means (9) (here in the form of a tooth (9)) of the previously placed building board (1 ) into the second coupling means (10) (here in the form of a groove (10)), of the last placed building board (1 ), in which these screws (12) are fastened, so that the building boards (1 ) are sufficiently pulled towards each other when forming the coupling (here in the form of a tooth-groove connection), as schematically shown by the arrows in Figure 78, the seam (41 ) between the building boards (1 ) being minimised. The last placed building board (1 ) may then preferably be displaced up to about 1 mm. To this end, preferably, in the screw slot (42), an indication is provided which indicates where screws (12) need to be provided. The screw slot (42) may then be designed to be somewhat more brittle locally at the location where screws (12) need to be, so that, when screwing in a screw (12), the screw slot (42) may tear open a bit while the corresponding building board (1 ) is offset.

[0120] In the embodiment from Figures 79-81 , the building boards (1 ) are clamped to the support profiles (1 ) using fastening brackets (50) by clamping these fastening brackets (50) over the fastening lug (18) and a flange of the corresponding support profile (11 ). Preferably, distributed over the height of the support profile (11 ), multiple such fastening brackets (50) are provided, wherethey are preferably provided at about 25 cm from one another. Using such fastening brackets (50), the building boards (1 ) do not need to be screwed. Such fastening brackets (50) form a simple and fast way to mount and demount the building boards (1 ).

[0121] In the embodiments shown, the building boards (1 ) are each virtually completely designed in plastic (37) on the first lateral side (5) and / or on the second lateral side (6), to reinforce the building board (1 ) at the height of the coupling means (9, 10) using the plastic.

[0122] In most embodiments shown, the building board (1 ) is substantially free from plastic on the mounting side (3) and on the visible side (4). In the embodiments from Figures 66-70, a layer of plastic has been applied to the whole basic board (2).

[0123] The building boards (1 ) formed preferably have a width between 600 mm and 1250 mm and a height between 600 mm and 3600 mm.

[0124] The basic boards (2) provided to this end preferably have a weight per m2between 10 kg and 20 kg and preferably a board thickness of at most 20 mm. When adding said coupling profiles (9, 10), one may advantageously start from standard known cement-bound and optionally fibre-reinforced, such as for example, glass fibre-reinforced basic board. When profilings are milled into the basic board, the basic board is preferably chosen to be somewhat wider than standard known boards, to compensate for the overlap at the height of the coupling means when coupling building boards (1 ) formed therewith according to the invention.

[0125] In order to build up a wall using building boards (1 ) according to the invention, an existing background, such as an existing wall may be provided to fasten the building boards (1 ) against it. This existing background may optionally be provided with a grid from, for example, wooden battens. However,preferably, a frame is built up from support profiles (11 ), as shown in Figures 1 -2. The support profiles (11 ) are preferably support profiles (11 ) for building up frames as a background, as described and shown in BE1024792B1 , W02019171280A1 and / or W02020065487A1 , the contents of which are incorporated in the present patent application by reference. The support profiles (11 ) are simply adjustable in a height direction as illustrated in Figure 1 , to be able to adjust the height of a wall (34) built up therewith. The frame built up therewith is also simply adjustable in a width direction as shown in Figure 2, to be able to adjust the width of a wall (34) built up therewith. The intercoupling of the support profiles (11 ) may be realised particularly smoothly, while they may also simply be decoupled in a circular way.

[0126] After a background is provided, by, for example, building up a frame from support profiles (11 ), building boards (1 ) may be fastened against it.

[0127] Afirst and a last building board (1 ) may, to this end, as shown in Figures 3 and 4, optionally be shortened in the width direction, by cutting off a part to be removed (40) by means of a utility knife (36). In preferred variant, to this end, from a single building board (1 ), both a part to be used having first coupling means (9) as a first building board (1 ) to be used and a part to be used having second coupling means (10) as a last building board (1 ) to be used may be cut off to have as little material to be removed (40) as possible.

[0128] Further, because the coupling means (9, 10) are manufactured at least partially from plastic, it is also easily possible to cut the building boards (1 ) for height by cutting the building board (1 ) and the coupling means (9, 10) of this building board (1 ) with a utility knife (36) transversely to the lateral sides (5, 6) of the building board (1 ) to shorten this building board (1 ) before fastening this building board (1 ) against the background.

[0129] With a said frame as a background, a first building board (1 ) may be placed with the mounting side (3) against mounting faces (39) of supportprofiles (11 ) of the frame, such that this building board 91 ) adjoining its first lateral side (5) at least partially overlaps the mounting face (39) of a corresponding support profile (11 ). This first building board (1 ) may completely overlap this support profile (11 ), so that an edge (32) of the first coupling means (9) is adjacent to an edge (33) of the mounting face (39) of the support profile (11 ), as shown in Figures 43-48, 55-60, and 77-81. Alternatively, it is possible to let this building board (1 ) overlap the corresponding support profile (11 ) only partially, as shown in Figures 49-54.

[0130] With building boards (1 ) having a so-called fastening lug (18), it is then possible to screw this building board (1 ) using, for example, screws (12), to the corresponding support profile (11 ), as shown in Figures 43-51 and 77-78, this at the height of this fastening lug (18). Alternatively or with building boards (1 ) without such a fastening lug (18), it is also possible to provide screws (12) regardless of such a fastening lug (18), as shown in Figures 52-54. This will typically be less preferred, since this will require additional steps for mounting, to ensure that screw heads may then be provided to be recessed in the building board (1 ), the building board (1 ) then needing to be filled with finishing material at the height of these recessed screw heads. This also complicates frequently circularly reusing such a building board (1 ). Alternatively, it is possible to fasten the building boards (1 ) to the support profiles (11 ) using fastening brackets (50), as shown in Figures 79-81.

[0131] Alternatively, a first building board (1 ) may also be fastened to the corresponding support profile in multiple other possible ways.

[0132] In the embodiments from Figures 10-60 and 66-76, the building board (1 ) is designed in plastic on the mounting side (3) adjacent to the first lateral side (5). This allows simple application of a fastening strip thereto, for fastening this building board (1 ) against the background.

[0133] Thus, it is shown in Figure 19 how Velcro (19) may be applied thereto so that, as shown in Figures 55-57, the corresponding support profile (11 ) may also be provided with a corresponding Velcro (19), for fastening the building board (1 ) to this support profile 11 ) using this Velcro (19).

[0134] Alternatively, Figures 58-60 show that, on such a plastic strip on the mounting side (3), spotlessly removable double-sided tape (20) may be applied to thereby fasten the building board (1 ) to this support profile (11 ).

[0135] In the embodiments shown, the fastening strip (19, 20) is each time provided at the height of the fastening lug (18). In alternative embodiments, such as, for example, this one shown in Figures 71 -76, such a fastening strip (19, 20) is provided regardless of a said fastening lug (18).

[0136] After the first building board (1 ) has been fastened in this way, a second building board (1 ) may be coupled to the first building board (1 ), by realising a coupling between the first coupling means (9) of the first building board (1 ) and the second coupling means (10) of the second building board (1 ).

[0137] Here, it is taken into account that the frame is built up such that the first lateral side (5) of the second building board (1 ) may be fastened analogously to a corresponding support profile (11 ) as described hereinabove for a first lateral side (5) of the first building board (1 ). Further building boards (1 ) may then analogously be coupled to the second building board (10), be fastened to corresponding support profiles (11 ) and be intercoupled until the whole wall (43) has been built up.

[0138] A formed wall (43) may then be finished in multiple ways as desired.

[0139] Thus, it is possible, a shown in Figures 5, 25, 27, 29, and 74, to provide the seam (41 ) between adjoining building boards (1 ) with a finishing layer (31 ) using a filling knife (35), for example with a grout and / or be filled with grout(14), such grout being, for example, a gypsum-based grout (finishing material). A said finishing layer (31 ) may then be applied to the first coupling means (9) of the first building board (1 ) and to the second coupling means (10) of the second building board (1 ).

[0140] In order to be able to fill the seam (41 ) with grout (14), each building board (1 ) is provided with a recess (15) on the lateral sides (5, 6) on a visible side (4), away from the mounting side (3), for forming a filling groove (16) between two mutually fastened similar building boards (1 ). These recesses(15) may be provided in the form of bevels (15), as shown in Figures 26-30. Alternatively, coupling profiles (9, 10) may be provided with a recess (15) to form such a filling groove (16), as shown in Figures 71 -76. Alternatively or additionally, each building board (1 ) may be provided with a nose (17) upstanding relative to the visible side (4), on a visible side (4), away from the mounting side (3), near each lateral side (5, 6), as shown in the embodiment from Figures 28-30. This upstanding nose (17) is also preferably manufactured from plastic. Normally, when finishing a seam (41 ) with such grout (14), the grout (14) collapses a bit during drying. With this upstanding nose (17), it may be ensured that the filling groove (16) may certainly be filled with sufficient grout (14), and that, during drying of the grout (14), when this grout (14) collapses, this grout (14) still remains on the visible side (4) at the height of the outer surface of the basic board (2). Then, it is possible to sand off the upstanding nose (17), so that the whole outer surface of the building board (1 ) becomes flat.

[0141] Where coupling means (9, 10) are arranged adjacently to such a filling groove (16), it is possible to provide an elastic cover lug (45) to these coupling means (9, 10), preventing this filler (14) from ending up between the coupling means (9, 10), which could complicate repeated coupling of these coupling means (9, 10). Wth coupling profiles (9, 10), such a cover lug (45) may, for example, be formed along with these coupling profiles (9, 10) through coextrusion.

[0142] As shown in Figures 6, 22 and 25, it is, for example, also possible to clad the building boards (1 ) with wallpaper (13), such as, for example, nonwoven wallpaper.

[0143] Alternatively or additionally, it is also possible to apply a primer (44) to the building boards (1 ), as shown in Figures 23 and 24. To this primer (44), optionally, wallpaper (13), like in Figure 24, or a finishing layer (31 ) like in Figure 25, or a paint layer, etc. may be applied.

[0144] After building up a wall (34) according to the invention, this wall (34) may also easily be demounted in a way in which used building boards (1 ) and any support profiles (11 ) may be reused.

[0145] To this end, the building board (1 ) provided last may be decoupled first from any support profile (11 ) against which it is fastened on the side away from the second lateral side (6) and be decoupled from the adjoining building board (1 ) by decoupling the realised coupling between the first coupling means (9) of the adjoining building board (1 ) and the second coupling means (10) of the last building board (1 ). Analogously, thus, each further building board (1 ) may be detached from the background and, optionally, be decoupled from a further adjoining building board (1 ).

[0146] When the wall (34) is finished with grout (14) and / or primer (44) and / or paint and the like, this grout or this primer or this paint or the like will break at the height of the seam (41 ), as shown in Figure 8. The coupling means (9, 10) may then simply be prepared for further use by sanding the building board (1 ) on the visible side (4), opposite the mounting side (3) at the height of the coupling means (9, 10).

[0147] When the wall (34) is then finished with wallpaper (13) this wallpaper (13) may then be cut using a utility knife (36) at the height of the seam (41 ), asshown in Figure 9. Alternatively and / or additionally, this wallpaper (13) may also be pulled loose from the wall (34).

Claims

Claims1. Building board (1 ), comprising a gypsum-bound and / or cement-bound basic board (2), wherein the building board (1 ) comprises a mounting side (3), for fastening this building board (1 ) against a background, wherein the basic board (2) is provided with first coupling means (9) on a first lateral side (5), which are designed as first click means (9), and wherein the basic board (2) is provided with corresponding second coupling means (10) on a second lateral side (6), which are designed as second click means (10) and which are provided for realising a click connection as a coupling with the first coupling means (9) of a similar building board (1 ), wherein the first coupling means (9) and / or the second coupling means (10) are manufactured at least partially from plastic (37, 38), characterized in that the first click means (9) and / or the second click means (10) comprise a click leg (43) comprising a core (22), which is part of the basic board (2), wherein this core (22) is provided with a layer of plastic (37, 38).

2. Building board (1 ) according to claim 1 , characterized in that the first lateral side (5) and / or the second lateral side (6) is provided with a coating.

3. Building board (1 ) according to any one of the preceding claims, characterized in that the coupling means (9,10) are manufactured from plastic (37, 38) on a visible side (4), opposite the mounting side (3).

4. Building board (1 ) according to any one of the preceding claims, characterized in that the first coupling means (9,10) comprise a fastening lug (18) on the mounting side (3).

5. Building board (1 ) according to claim 4, characterized in that the fastening lug (18) is provided with a fastening strip (19, 20), preferably manufactured from Velcro (19), on the mounting side (3).

6. Building board (1 ) according to claim 4 or 5, characterized in that the fastening lug (18) adjacent to the mounting side (3) is manufactured from plastic.

7. Building board (1 ) according to any one of the preceding claims, characterized in that the building board (1 ) is designed in plastic (37) on the first lateral side (5) and / or is designed in plastic (38) on the second lateral side (6).

8. Building board (1 ) according to any one of the preceding claims, characterized in that the building board (1 ) is substantially free from plastic on the mounting side (3) and / or that the building board (1 ) is substantially free from plastic on a visible side (4), opposite the mounting side (3).

9. Building board (1 ) according to any one of the preceding claims, characterized in that the building board (1 ) is provided with a recess (15) on the lateral sides (5, 6) on a visible side (4), away from the mounting side (3), for forming a filling groove (16) between two mutually fastened similar building boards (1 ).

10. Building board (1 ) according to any one of the preceding claims, characterized in that the building board (1 ) is provided with an nose (17) upstanding relative to the visible side (4) on a visible side (4), away from the mounting side (3), near each lateral side (5, 6).11 . Assembly for building up a wall (34), comprising support profiles (11 ) for building up a background, and comprising building boards (1 ), for fastening against these support profiles (11 ), characterized in that the building boards (1 ) comprise a first building board (1 ) according to any one of the preceding claims and comprise a second building board (1 ) according to any one of the preceding claims.

12. Wall (34), comprising a background, built up with support profiles (11 ) and comprising building boards (1 ), fastened against these support profiles(11 ), characterized in that the support profiles (11 ) and the building boards (1 ) are part of an assembly according to claim 11 , wherein a coupling is realised between the first coupling means (9) of the first building board (1 ) and the second coupling means (10) of the second building board (1 ).

13. Wall (34) according to claim 12, characterized in that the building boards (1 ) are cladded with wallpaper (13).

14. Wall (34) according to claim 12 or 13, characterized in that a finishing layer (31 ) is applied to the first coupling means (9) of the first building board (1 ) and to the second coupling means (10) of the second building board (1 ).

15. Method of manufacturing a building board (1 ), comprising providing a gypsum-bound and / or cement-bound basic board (2), wherein the building board (1 ) comprises a mounting side (3), for fastening this building board (1 ) against a background, the method comprising providing first coupling means (9) on a first lateral side (5) of the basic board (2), which are designed as first click means (9), and providing corresponding second coupling means (10) on a second lateral side (6) of the basic board (2), which are designed as second click means and which are provided for realising a click connection as a coupling with the first coupling means (9) of a similar building board (1 ), wherein the first coupling means (9) and / or the second coupling means (10) are manufactured at least partially from plastic (37, 38), characterized in that the first click means (9) and / or the second click means (10) are designed with a click leg (43) comprising a core (22), which is part of the basic board (2), wherein this core (22) is provided with a layer of plastic (37, 38).

16. Method according to claim 15, characterized in that the first lateral side (5) is provided with a basic groove (25) through milling and that the second lateral side (6) is provided with a basic tooth (26) corresponding to the basic groove (15) through milling, and that the basic groove (25) and / or the basic tooth (26) are provided with a layer of plastic (37, 38) to respectively providethe first lateral side (5) with a click groove (23), which is at least partially bounded by a click edge (24) as first coupling means (9) and to provide the second lateral side (6) with a click tooth (21 ) corresponding to the click groove (23) as second coupling means (10), wherein this click tooth (21 ) is providable in the click groove (23) on the first lateral side (5) of a similar building board(1 ) and is provided with a click edge (24), which is clickable behind the click edge (24) of the first click means (9) upon providing the click tooth (21 ) in the click groove (23).

17. Method according to claim 15 or 16, characterized in that the basic groove (25) is coated with plastic to provide it with the layer of plastic (37) and / or that the basic tooth (26) is coated with plastic to provide it with the layer of plastic (38).

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