DK153095B

DK153095B - flagstones

Info

Publication number: DK153095B
Application number: DK429178AA
Authority: DK
Inventors: Aake Svensson
Original assignee: Aake Svensson
Priority date: 1977-09-30
Filing date: 1978-09-27
Publication date: 1988-06-13
Also published as: NO147346B; NO783272L; DK429178A; FI782977A; FI60279B; FI60279C; NO147346C; DK153095C; SE7711004L; DE7827877U1; SE408198B

Description

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Den foreliggende opfindelse angår en facadebeklædning af plade til beboelseshuse, fabriksbygninger og andre bygningsenheder.The present invention relates to a facade cladding for residential buildings, factory buildings and other building units.

Opfindelsen angår mere bestemt facadebeklædning omfattende facadeelementer samt fastgørelsesindretninger for disse.More particularly, the invention relates to facade cladding comprising facade elements and fasteners therefor.

Facadebeklædninger af ovennævnte type er tidligere kendt i mange udførelsesformer og dimensioner.Facade coatings of the above type are previously known in many embodiments and dimensions.

Kendte facadebeklædninger, som er opbygget af et antal elementer, ofte med en dimension af omkring 0,5-1 m i kvadrat, er imidlertid udført på en sådan måde, at der mellem hvert element findes spor eller ophøjninger, på hvilke der findes fastgørelsesanordninger. De kendte facadeelementer er således ikke udført på en sådan måde, at en i hovedsagen helt plan facade let kan opnås.However, known facade coatings, which are made up of a number of elements, often with a dimension of about 0.5-1 m in square, are made in such a way that between each element there are grooves or projections on which fasteners are found. Thus, the known facade elements are not designed in such a way that a substantially planar facade can easily be obtained.

I den senere tid er der opstået et behov for facadeelementer, ved hjælp af hvilke en pudset facade kan efterlignes. Kendte facadebeklædninger kan ikke efterligne en pudset facade, da nævnte spor eller ophøjninger umuliggør opbygning af en i hovedsagen helt plan facade.More recently, a need for facade elements has emerged by means of which a plastered facade can be imitated. Known façade coatings cannot mimic a plastered façade, since said grooves or elevations make it impossible to build a substantially flat facade.

Den foreliggende opfindelse angår en facadebeklædning af den type, der er angivet i den indledende del af krav 1 og med de ejendommeligheder, der er angivet i den kendetegnende del af krav 1, hvoraf det væsentlige er de specielt udformede tunger, som både sammenlåser elementerne og retter dem ind indbyrdes. Ved hjælp af opfindelsen kan der opnås en i hovedsagen helt plan og helt dæk- 2The present invention relates to a facade cladding of the type specified in the preamble of claim 1 and to the peculiarities of the characterizing part of claim 1, substantially the specially formed tongues which interlock both the elements and aligns them among themselves. By means of the invention, a substantially planar and completely tire 2 can be obtained

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kende facadebeklædning med simplere midler end ved den kendte teknik og med facadeelementer, der kan ophænges hurtigt, uden det er nødvendigt at anvende søm, skruer eller specielle clips.know the facade cladding with simpler means than by the prior art and with fastening facade elements without the need to use nails, screws or special clips.

Opfindelsen vil i det følgende blive beskrevet nærmere under henvisning til tegningen, hvor fig. 1 viser et facadeelement set fra dettes bagside, fig. 2 facadeelementet set fra siden, fig. 3 et snit efter linien A-A i fig. 1, fig. 4 et facadeelement set fra dettes forside, fig. 5 et facadeelement set i et snit efter linien B-B i fig. 1 og monteret på fastgørelsesindretninger på en væg, fig. 6 to facadeelementer i et hjørne set oppefra i et snit svarende til snittet B-B i fig. 1, samt en forstørrelse af området i hjørnet, fig. 7 facadeelementer og fastgørelsesindretninger ved en vindues- eller dørniche i et snit svarende til snittet B-B i fig. 1, fig. 8 en vandret forbindelse mellem to ovenfor hinanden liggende facadeelementer, set i et snit svarende til snittet A-A i fig. 1, fig. 9a-d illustrerer en borttagning af et vilkårligt facadeelement, og fig. 10 en detalje i fig. 5 i større målestok.The invention will now be described in more detail with reference to the drawing, in which: FIG. 1 shows a facade element seen from the rear thereof; FIG. 2 is a side view of the facade element; FIG. 3 is a section along line A-A of FIG. 1, FIG. 4 shows a facade element from the front thereof; FIG. 5 is a sectional view taken in section along line B-B in FIG. 1 and mounted on fasteners on a wall; FIG. 6 shows two facade elements in a corner seen from above in a section corresponding to the section B-B in FIG. 1, and an enlargement of the area in the corner; FIG. 7 facade elements and fasteners at a window or door niche in a section corresponding to the section B-B in fig. 1, FIG. 8 shows a horizontal connection between two superimposed facade elements, seen in a section corresponding to the section A-A in FIG. 1, FIG. 9a-d illustrate a removal of any facade element, and FIGS. 10 shows a detail of FIG. 5 on a larger scale.

I fig. 1, 2, 3 og 4 vises et facadeelement 1, der har en i hovedsagen plan overflade 2, som er beregnet til at danne yder flade, når facadeelementet er monteret på et hus. Fra overfladen 2 er der nedbøjet to parallelle sidekanter 3, 4. Disse sidekanter 3, 4 er beregnet til at udgøre facadeelementets 1 lodrette sider. Endvidere er en øverste tunge 5 udformet fra overfladens 2 øverste kant 6 og en underste tunge 7 er udformet fra overfladens 2 neder s te kant 8. Tungerne 5, 7 strækker sig opad og indad, som det fremgår af fig. 3 og danner således en vinkel med overfladen 2. Mindst den ene af nævnte sidekanter 3, 4 er desuden bøjet indad, således at den indadbøjede del 3In FIG. 1, 2, 3 and 4, a facade element 1 is shown having a substantially planar surface 2, which is intended to form outer surface when the facade element is mounted on a housing. From the surface 2, two parallel side edges 3, 4 are bent down. These side edges 3, 4 are intended to constitute the vertical sides of the facade element 1. Furthermore, an upper tongue 5 is formed from the upper edge 6 of the surface 2 and a lower tongue 7 is formed from the lower edge of the surface 2. The tongues 5, 7 extend upwards and inwards, as can be seen in FIG. 3, thus forming an angle with the surface 2. At least one of said side edges 3, 4 is further bent inwardly so that the inwardly bent part 3

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sammen med overfladen danner en U-formet profil, hvilket bedst fremgår af fig. 5. Den ϋ-formede profils fri ben 9,10 er forsynet med nøglehulsindsnit 11,12. Nøgehulsindsnittene 11,12 er beregnet til at samvirke med et fastgørelsesorgan indbefattende skruer eller lignende til fastgørelse af et element 1. ^acadeelementer 1, der er beregnet til at placeres på en flad væg har begge sidekanterne 3,4 bøjet nedad og indad til dannelse af nævnte U-profil. Det frie ben 9,10 af den U-formede profil kan ved hjælp af nævnte nøglehulsindsnit fastgøres i et fastgørelsesorgan, der fortrinsvis omfatter en i hovedsagen U-formet bjælke 13, der er lodret eller vandret fastgjort på en husvæg 41. Bjælken 13 er i dette tilfælde forsynet med skruer 14 eller lignende i dens fri ender, hvilke skruer er beregnet til at samvirke med nøglehulsindsnittene 11,12, som vist i fig. 5.together with the surface forms a U-shaped profile, which is best seen in fig. 5. The ben-shaped profile free leg 9,10 is provided with keyhole incisions 11,12. The keyhole incisions 11,12 are intended to cooperate with a fastener including screws or the like for securing an element 1. Acadic elements 1 intended to be placed on a flat wall have both side edges 3,4 bent downwards and inwards to form said U-profile. The free leg 9,10 of the U-shaped profile can be fixed by means of said keyhole incision in a fastening means, which preferably comprises a generally U-shaped beam 13, which is vertically or horizontally fixed on a housing wall 41. The beam 13 is in in this case, provided with screws 14 or the like at its free ends, which screws are intended to cooperate with the keyhole inserts 11, 12, as shown in FIG. 5th

De nævnte tunger 5,7 er i deres fri ender bukket i retning fra nævnte overflades 2 bagside, således at den bukkede del 15,16 danner en V-form, hvor den underste tunges 7 V-formede del 16 på ét element la kan indpasses i den V-f ormede del 15 af den Øverste tunge 5 på et under elementet la værende andet element lb, se fig. 8. Herved opnås således en låsning mellem to lodret tæt beliggende elementer la,lb. Disse tunger medfører, at vand ikke kan trænge ind gennem samlingen mellem to lodret til hinanden stødende elementer.Said tongues 5,7 are bent at their free ends in the direction from the rear of said surface 2, so that the curved portion 15,16 forms a V-shape in which the lower tongue 7 V-shaped part 16 on one element 1a can be fitted in the Vf section 15 of the upper tongue 5 on a second element lb below the element la, see fig. 8. Thus, a lock is obtained between two vertically close elements 1a, 1b. These tongues mean that water cannot penetrate through the joint between two vertically adjacent elements.

Facadeelementet 1 monteres hensigtsmæssigt nedefra og opefter på en husvæg, hvorved et øverste element la fastgøres ved hjælp af nøglehulsindsnittene 11,12 og skydes nedad mod et underste element lb, hvorved ovennævnte låsning optræder. Fortrinsvis går den ø-verste kant af overfladen 2 over i den øverste tunge 5 via en kort afsats 17 vinkelret på overfladen 2, se fig. 8. Den nederste kant 8 af et facadeelement er forsynet med en tilsvarende afsats 18. Afsatserne 17,18 medfører, at der opnås en bestemt indbyrdes stilling mellem to på hinanden monterede facadeelementer la,lb.The facade element 1 is conveniently mounted from below and upwards on a housing wall, whereby an upper element 1a is fastened by means of the keyhole incisions 11,12 and is pushed downwards towards a lower element 1b, whereby the above locking occurs. Preferably, the upper edge of the surface 2 extends into the upper tongue 5 via a short ledge 17 perpendicular to the surface 2, see FIG. 8. The lower edge 8 of a facade element is provided with a corresponding ledge 18. The ledges 17,18 result in a certain mutual position being obtained between two facade elements 1a, 1b, mounted on one another.

Facadeelementer lc,ld, der er beregnet til at anbringes således, at de udgør et hjørne af et hus, såkaldte hjørneelementer lc,ld, har deres ved hjørnet beliggende sidekanter 19,20 bøjet ind under overfladen 21, således at hvert hjørneelement danner en vinkel på 45° mod overfladen 21, se fig. 6. De to sidekanter 19,20, der hver hører til et på de to sider af husets hjørne i vandret retning tæt beliggende elementer lc,ld, er beregnet til at ligge an mod hinanden, hvorved hjømeelementernes overflader 21 mødes under en ret vinkel 4Facade elements lc, ld, which are intended to be arranged so that they form a corner of a housing, so-called corner elements lc, ld, have their side edges 19, 20 at the corner, bent under the surface 21, so that each corner element forms an angle of 45 ° towards the surface 21, see fig. 6. The two side edges 19, 20, each of which are located on the two sides of the corner of the housing in horizontally adjacent elements lc, ld, are intended to abut one another, whereby the surfaces 21 of the corner elements meet at a right angle 4

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i hjørnet. Fastgørelsesindretningen i den længst fra hjørnet beliggende ende af hjørneelementerne lc,ld udgøres af ovennævnte fastgørelsesindretninger 11,12,13,14. Fastgørelsesindretningen i hjørnet for hjørneelementerne lc,ld udgøres af sidekanterne 3,4. Den i hjørnet liggende sidekant 20 på det ene hjørneelement ld er herved bukket for i sin ydre ende at danne en U-form med den U-formede dels 22 frie ben 23, der er givet en savtakform vendende mod det i hjørnet tilstødende andet hjørneelement lc. Den i hjørnet liggende sidekant 19 på det andet hjørneelement lc er herved bukket for i sin ydre ende at danne en V-form med den frie kant 25 af den V-formede del 24 vendende ind mod bagsiden af hjørneelementets lc overflade 21. Herved kan hjørneelementerne lc,ld sammenfæstes, ved at det andet hjørneelements lc V-formede del 24 skydes ind i førstnævnte elements ld ϋ-formede del 22, hvorved den V-formede dels frie ende er beregnet til at ligge an og låses mod den U-formede dels savtakkede frie ben 23.in the corner. The fastener at the farthest corner of the corner members 1c, 1d is constituted by the above fasteners 11,12,13,14. The fastener in the corner for the corner elements lc, ld is formed by the side edges 3,4. The lateral edge 20 of one corner element ld is thereby bent to form at its outer end a free leg 23 of the U-shaped part 22, which is given a saw-roof shape facing the second corner element 1c adjacent to the corner . The side edge 19 lying on the second corner element 1c is thereby bent to form at its outer end a free edge 25 of the V-shaped part 24 facing towards the back of the corner element 1c surface 21. Hereby the corner elements can be lc, ld is joined by sliding the V-shaped portion 24 of the second corner element 24 into the ld ϋ-shaped portion 22 of the first element, whereby the free end of the V-shaped part is intended to abut and lock against the U-shaped part sawed free legs 23.

Facadeelementer til facadedele, som er beliggende vinkelret på husfacadens hovedplan, såsom rundt om vinduer og døre, såkaldte vindues- og dørnicheelementer 26, udgør fastgørelsesindretninger for det ovenfor beskrevne facadeelement 1 grænsende op til vinduer og døre, etc. Et vindues- og dørnicheelement 26 udgøres af et element, som er udformet på ønsket måde efter nævnte facadedel, der i sin ind mod den egentlige husfacade 27 liggende ende er bukket til en U-formet del 28, hvor det frie ben 29 af den U-formede del er givet en savtakform, se fig. 7. Et til facaden 27 beregnet facadeelements le ene sidekant er indrettet til at skydes ind i nævnte U-formede del 28, hvilken sidekant herfor i sin yderste del 30 er givet en V-form, således at den låses mod den U-formede dels 28 savtakkede frie ben 29. Vindues- eller dørnicheelementer 26 sømmes hensigtsmæssigt fast i vindues- eller dørkarmen. I fig. 7 vises aom eksempel et vinduesnicheelement 26, hvor, i fig. 7, vindueskarmen er betegnet med 31 og vinduesglasset med 32.Facade elements for facade parts which are perpendicular to the main plane of the house facade, such as around windows and doors, so-called window and door niche elements 26, are fasteners for the above-described facade element 1 adjacent to windows and doors, etc. A window and door niche element 26 is formed of an element which is formed in a desired manner according to said facade part, which at its end lying against the actual housing facade 27 is bent to a U-shaped part 28, whereby the free leg 29 of the U-shaped part is given a sawtooth shape. , see fig. 7. The one side edge of a facade element intended for the facade 27 is arranged to be slid into said U-shaped part 28, the side edge thereof being given in its outer part 30 a V-shape, so that it is locked against the U-shaped part. 28 sawed free legs 29. Window or door niche elements 26 are suitably stitched to the window or door frame. In FIG. 7 shows, for example, a window niche element 26, where, in FIG. 7, the window sill is indicated by 31 and the window glass by 32.

Over- og underkant af et vindues- eller dørnicheelement, der grænser op til et facadeelement, er udformet med tunger på tilsvarende måde som beskrevet ovenfor for facadeelementet 1.The upper and lower edges of a window or door niche element adjacent to a facade element are formed with tongues in a similar manner as described above for the facade element 1.

Ved anbringelsen af de ovenfor beskrevne facadeelementer, der også indbefatter hjørneelementer samt vindues- og dørnicheelementer, overlappes to lodret til hinanden stødende elementer af de nævnte tunger. Endvidere er vandret til hinanden stødende elementer anbragt med sidekanterne tæt op til hverandre. Dette medfører således, at en hovedsagelig plan, helt dækkende facadebeklædning opnås. I en 5In the arrangement of the facade elements described above, which also includes corner elements as well as window and door niche elements, two vertically adjacent elements of the said tongues are overlapped. In addition, horizontal adjacent elements are arranged with the side edges close to each other. This means that a mostly flat, completely covering facade cladding is obtained. In a 5

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udførelsesform er facadeelementerne udført således, at de ligner en pudset facade.In embodiment, the facade elements are designed to resemble a plastered facade.

I fig. 10 vises den yderste del af U-bjælken 13 forstørret. Af fig. 10 fremgår, at skruen 14 eller lignende fortrinsvis udgøres af en stift, som er forskydelig i et hul 34 i U-bjælkens ydre flange 35. Skruen 14 er således eftergivelig i forhold til U-bjælken et stykke i dennes længderetning. Et fjedrende legeme 33, der kan udgøres af et fjedrende materiale eller en fjeder, er anbragt rundt om skruen 14 for at bevirke, at den er eftergivelig under et modvirkende fjedertryk.In FIG. 10, the outer portion of the U-beam 13 is enlarged. In FIG. 10, the screw 14 or the like is preferably formed by a pin which is displaceable in a hole 34 in the outer flange of the U-beam 35. Thus, the screw 14 is resilient with respect to the U-beam a longitudinal direction thereof. A resilient body 33, which may be constituted by a resilient material or spring, is disposed around the screw 14 to cause it to be resilient under a counteracting spring pressure.

Ved den beskrevne udformning af facadeelementet 1 og med de eftergivelige skruer 14 er det muligt at fjerne et vilkårligt facadeelement 1 fra en facadebeklædning og erstatte det fjernede element med et nyt. I fig. 9a-d illustreres, hvorledes fjernelse af et facadeelement If i princippet foregår. Fig. 9a viser udgangsstillingen, når facadeelementet lf er på sin plads. Ved fjernelse indstikkes der en spartel eller lignende i samlingen mellem det pågældende facadeelement lf, som skal fjernes, og det overliggende element lg. Ved hjælp af spartlen fjernes det øverste element lg noget fra husvæggen, som vist ved pilen 36, hvorved tungernes 5,7 V-formede dele 15,16 løsnes fra hinanden. Herefter løftes det pågældende element op, som vist ved pilen 37, ind under det øverste element lg, indtil elementet kan fjernes fra de skruer 14, til hvilke det er fastgjort. Derefter vippes den underste del af elementet ud, som vist ved pilen 38, og elementet trækkes ud, som vist ved pilen 39. Indsætning af et element sker på tilsvarende måde i omvendt orden.In the described design of the facade element 1 and with the resilient screws 14 it is possible to remove any facade element 1 from a facade cladding and replace the removed element with a new one. In FIG. 9a-d illustrate how removal of a facade element If in principle takes place. FIG. 9a shows the starting position when the facade element 1f is in place. Upon removal, a putty or similar is inserted into the joint between the facade element lf to be removed and the overlying element lg. By means of the trowel, the upper element Ig is slightly removed from the housing wall, as shown by arrow 36, whereby the tongs 5.7 V-shaped parts 15,16 are detached from each other. Then, as shown by arrow 37, the element in question is lifted under the upper element 1g until the element can be removed from the screws 14 to which it is attached. Then, the lower part of the element is tilted out, as shown by arrow 38, and the element is pulled out, as shown by arrow 39. Insertion of an element takes place in a similar manner in the reverse order.

Det mellemrum 40, som dannes mellem husets væg 41, facadebeklædningens 1 inderside og mellem to nærliggende U-bjælker 13, kan fortrinsvis udfyldes med isoleringsmateriale 42, eksempelvis mineraluld eller lignende. Denne mulighed, som den foreliggende opfindelse tilbyder, er bl.a. meget hensigtsmæssig at anvende ved en yderligere isolering af isolerede huse samt ved isolering af ikke-isolerede huse. Nævnte U-bjælkers længde vinkelret på husvæggen afpasses herved efter den ønskede tykkelse af isoleringen.The gap 40 formed between the wall 41 of the housing, the inside of the facade cladding 1 and between two adjacent U-beams 13 can preferably be filled with insulating material 42, for example mineral wool or the like. This possibility offered by the present invention is inter alia: very suitable to be used for further insulation of insulated houses as well as for insulation of non-insulated houses. The length of said U-beams perpendicular to the housing wall is hereby adjusted to the desired thickness of the insulation.

Den foreliggende opfindelse angår således en facadebeklædning omfattende facadeelementer tillige med fastgørelsesindretninger, der ganske simpelt opsættes og danner en i hovedsagen plan, helt dækkende facade. Det er en stor fordel, at facadeelementerne anbringes et stykke fra husvæggen, hvorved yderligere isolering af isolerede huseThus, the present invention relates to a facade cladding comprising facade elements as well as fasteners which are simply mounted and form a generally planar, fully covering facade. It is a great advantage that the facade elements are placed a distance from the house wall, thereby further insulating insulated houses

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6 eller isolering af ikke-isolerede huse muliggøres på enkel måde. Endvidere er det en meget stor fordel, at et vilkårligt facadeelement kan udskiftes, uden at andre facadeelementer behøver at fjernes, trods det faktum at facaden er helt dækkende i et plan.6 or insulation of non-insulated houses is made possible in a simple manner. Furthermore, it is a great advantage that any facade element can be replaced without the need to remove other facade elements, despite the fact that the facade is completely covering in one plane.

Claims

1. Facade cladding of sheet material for residential houses, factory buildings and other building units, comprising compartment elements 05 and fasteners thereof, each compartment element (1) having a substantially planar surface (2) arranged to constitute the facade surface, and from which two parallel side edges (3, 4), which is adapted to form the vertical sides of the phage element (1), is bent back and at least one side edge (3, 4) thereof is bent inwardly together with the surface (2). forming a U-shaped side edge profile, wherein an upper tongue (5) is formed at the upper edge (6) of the surface (2), while a lower tongue (7) is formed at the lower edge (8) of the surface (2) ), Characterized in that both tongues (5, 7) extend upwardly and inwardly and form an angle with the surface 2, 15 AT said upper tee (5) and lower tongue (7) at their free ends are bent downwardly and away from the back of the surface (2) so that the bent portion together with the tongue forms a V-shaped edge wherein the V edge (16) of the lower tongue (7) of a phage element is formally adapted to be able to rest against and engage the V edge (15) of an adjacent, underlying phage element upper tongue (5), thereby locking the two phage elements in each other with their respective faces 2 lying in the same plane, and the free legs (9, 10) of said U-shaped side edge profile are provided with key holes (11, 12) known per se and can thus be removably secured by means of of a fastener (13, 14).

Facade cover according to claim 1, characterized in that elements arranged to be mounted on a straight wall have both side edges (3, 4) bent back and inward to form said U-shaped side edge profile, and that the free leg (9, 10). ) of the U-shaped edge profile by means of said keyhole incisions (11, 12) arranged to be fixed in a fastening means comprising a generally U-shaped beam (13) arranged vertically or horizontally on the wall of the building. screws (14) or the like intended for the key-hole incisions (11, 12) are provided at the free ends of the U-beam (35).

Facade cladding according to claim 2, characterized in that said screws (14) and the element mentioned therein are resiliently away from the wall (41) of the housing under a counteracting spring pressure created by a

8 DK 153095 B resilient material (33) or a spring sufficient to detach any facade element by pushing the upper edge of the arbitrary element (11,12,14) before the arbitrary facade element lift (11,12,14) ) below the lower edge (8,7) of the above element, and then lift the arbitrary element by first pulling out its lower part.

Facade cladding according to claim 1, 2 or 3, characterized in that corner elements (lc, ld), i.e. facade elements (1) arranged to form a corner of the housing have its side edge (19,20) at the corner bent below the surface (21) so that the side edge (19,20) of each corner element forms an angle generally of 45 ° towards the surface (21), whereby two such side edges (19, 20), both of which are adjacent to one another on the two sides of the corner in a horizontal direction (lc, ld), are intended to abut against each other, whereby the corner elements surfaces (21) meet at a right angle to the corner, and AT one side of the corner element (ld) located in the corner (20) is bent to form at its outer end a U-shape with the U-shaped part (22) free leg (23) having a sawtooth shape, facing the second corner element (1c) adjacent to the corner, and wherein the second corner element (1c) at the side edge (19) located in the corner is bent to form at its outer end a V-shape with the free end (25) of the V-shaped part (24) facing towards the rear of the corner element (1c) surface (21), whereby the corner elements (lc, ld) can be joined in the corner by inserting the V-shaped part (24) of the second corner element (lc) into the U-shaped part (22) of the first element (ld), whereby the free end of the V-shaped part (25) is arranged to abut and lock against the saw-shaped free leg (23) of the U-shaped part (22).

Facade cladding according to claims 1, 2, 3 or 4, characterized in that window and door niche elements (26) for facade parts are perpendicular to the main plane of the house facade, e.g. around windows and doors, fastening means for facade elements (1) adjacent to windows and doors, and AT a window and door niche element (26) is constituted by an element formed after said facade part, which element (26) of its end (28) facing the main plane of the housing facade is bent to a U-shaped portion, wherein the free leg (29) of the U-shaped portion has a sawtooth shape, in which the U-shaped portion is one side edge of a facade element (1c), intended for the main plane of the housing facade is slidable, the lateral edge of which has a V-shape at its outer end, where the free end (30) of the V-shaped part is arranged to abut and lock against the saw-shaped free leg of the U-shaped part ( 29).