AN EXTERNAL PLASTER FACING AND A METHOD OF MAKING IT

Abstract: A plaster facing is comprised of a layer of facing tiles (15) attached to a building wall (11) and a layer (18) of plaster applied over the facing tiles. The facing tiles (15) are supported on the building wall (11) spaced therefrom and with freedom of movement relative to the wall parallel to the plane of the wall. Preferably, the facing tiles (15) are supported by support bars (12) which are attached to the wall and serve as spacers between the wall (11) and the facing tiles and to which the facing tiles are hooked from above.

Description: An external plaster facing and a method of making it This invention relates to an external plaster facing and a method of making such a facing. It is known to provide a building wall with an external plaster facing (faςade lining) by first securing a layer of facing tiles to the wall and the applying a layer of plaster over the tiles. This procedure is very laborious and costly. The present invention relates to an improved external plaster facing and a method of making such a facing and more particularly an external plaster facing with a ventilating gap between the wall and the inner or rear side of the facing tiles. In the independent claims the primary features of the invention are recited, and the dependent claims recite fea¬ tures of preferred embodiments. A distinguishing quality among others of the external plaster facing according to the invention is that it can be produced in a simple manner and using well-tried components materials available on the market. The invention will be described in greater detail below with reference to the accompanying drawing. Fig. 1 is a vertical sectional view of a portion of an external facing embodying the invention; Fig. 2 is an elevational view, drawn to a smaller scale, of the facing portion shown in Fig. 1, the plaster layer being removed over a portion of the figure so that the facing tiles behind the plaster layer can be seen. As shown in the drawing, the external facing or facade lining is provided on a wall 11 of a building. Horizontally spaced-apart, fixedly secured support bars 12 are attached to the wall and comprise flanges 13 which project from the wall and are provided along their free, outwardly directed verti¬ cal edges with uniformly spaced-apart, upwardly directed hooks 14. The hooks 14 of the support bars 12 support facing tiles 15 of stone material in a manner such that these facing tiles form a monolayer which covers the wall 11. At the same time, the flanges 13 of the support bars constitute spacer members which keep the rear side of the facing tiles 15 at a certain distance from the wall so that there is an air gap between the wall and the layer of facing tiles. In their upper portion, the facing tiles 15 have a re¬ bate 16 which extends along the upper edge on the front side and the depth of which approximately corresponds to one-half of the thickness or depth of the tiles. In their lower por¬ tion the tiles have a downwardly projecting lip 17 the thick¬ ness of which corresponds to the depth of the rebate. As shown in Fig. 2, the facing tiles 15 are hooked up from above on the hooks 14 and the lower portion of the lip 17 extends from above into the rebate 16 of the next lower tile to slightly overlap this tile. Between the lower edge of the lip 17 and the lower wall of the rebate 16, there is a gap so that the tiles 15 have a certain limited freedom of relative movement in the vertical direction, parallel to the wall 11. The suspension of the tiles 15 on the hooks 14 is also designed such that the tiles also have a freedom of movement relative to one another and relative to the wall 11 in the horizontal direction and parallel to the wall. As is indi¬ cated in Fig. 2, a small gap may also exist between hori¬ zontally neighbouring tiles 15. The illustrated support bars 11 and facing tiles 15 are known in the art. A layer 18 of plaster is applied to the front side of the layer of facing tiles 15. This layer of plaster also fills the gaps between the lower edge of the lip 17 and the lower wall or ledge of the rebates 16. The gaps may be com¬ pletely filled so that the layer of plaster is even through- out the front side as is shown in Fig. 1 at the upper gaps. The filling may also be incomplete so that a depression of greater or lesser depth is formed at the gaps as is shown in Fig. 1 at the lowermost gap. Such incomplete filling may be utilized to provide a desired effect on the appearance. If desired, the plaster may be reinforced by means of reinforcing netting or unbonded reinforcing fibres (not shown) as is known in the art. The plaster may be a plaster mixture available on the market, such as lime-cement plaster mixture (LC-stuff) . Be¬ cause the facing tiles are relatively small, however, it may be preferable to use a slightly elastic plaster mixture, such as a polymer plaster mixture, so that the danger of the plaster cracking between the facing tiles because of relative movements of the tiles will be reduced. Several brands of polymer plaster mixtures are also available on the market.

Claims: Claims 1. An external plaster facing comprising a layer of facing tiles (15) attached to a building wall and a layer (18) of plaster applied over the facing tiles, characterised 5 in that the facing tiles (15) are supported on the building wall (11) spaced therefrom and with freedom of movement rela¬ tive to the wall parallel to the plane of the wall. 2. An external plaster facing according to claim 1, characterised in that the facing tiles (15) are supported by 10 support bars (12) which are attached to the wall and serve as spacers between the wall (11) and the facing tiles and to which the facing tiles are hooked from above. 3. An external plaster facing according to claim 1 or 2, characterised in that the facing tiles are arranged so as _5 to overlap one another from above and with a gap between ' horizontally neighbouring tiles, said gap extending through a portion of the thickness of the tiles, and in that the gaps are filled with the plaster. 4. A method of making an external plaster facing on a 20 building wall (11), comprising applying a layer of facing tiles (15) to the building wall and then applying a layer (18) of plaster mixture over the facing tiles, characterised by attaching the facing tiles (15) to the walls with a spacing therefrom and with freedom of movement relative to 25 the wall (15) parallel to the plane thereof. 5. A method according to claim 4, characterised by providing the building wall (11) , before attaching the facing tiles (15) to it, with support bars (12) serving both as spacers between the wall and the tiles and as supports for 30 the tiles, and then hooking the facing tiles (15) to the support bars from above. 6. A method according to claim 4 or 5, characterised by arranging the tiles (15) so that they overlap one another from above and a gap is formed between vertically neighbour- 35 ing tiles, said gap extending through a portion of the thick¬ ness of the tiles, and by filling the gap with the plaster mixture.

Inventors: SJOELANDER OLIVER, SJOELANDER, OLIVER
Applicants: SJOELANDER OLIVER, SJOELANDER, OLIVER
Application year: 1995
Main classification: E04F13
IPC codes: E04F13