IES79076B2 - Method and template for applying relief plastering to a surface - Google Patents

Abstract

The invention relates to a method and template for applying relief plastering with joints on a surface, in which method: (a) a network of lands, made of moisture-resistant material and corresponding to the structure of joints, is applied to the surface by means of a removable adhesive layer, apertures being formed between these lands, (b) plaster is subsequently applied to the surface provided with the network, (c) the network is pulled off the surface such that in the areas of the apertures, projecting surface portions, and in the areas of the lands, receding joint-like surface portions are obtained, (d) the network adheres by means of the removable adhesive layer to a width of continuous carrier film also covering the apertures, (e) to apply the network to the surface, the carrier film is pulled off, at one end, from the network and this end is stuck to the surface, and (f) the carrier film is then pulled off further to the same extent as the network is pressed onto the surface with the adhesive layer. Such a method is, for example, suitable for applying relief plastering to an outdoor or indoor wall, which then shows the texture of a brick wall.

Description

The invention relates to a method for applying relief plastering with apparent joints on a surface, wherein (a) a network of lands, made of moisture-resistant material and corresponding to the structure of joints, is applied to the surface by means of a removable adhesive layer, apertures being formed between these lands, (b) a plaster is subsequently applied to the surface provided with the network, and (c) next, the network is pulled off the surface such that in the areas of the apertures, projecting surface portions, and in the areas of the lands, receding joint-like surface portions are obtained.

Such a method is, for example, suitable for applying relief plastering to an outdoor or indoor wall, which then shows the texture of a brick wall. For that reason it is e.g. possible to give a concrete wall the appearance of brick-work, without having to face the concrete wall expensively with clinker. The network of the template, which imitates e.g. the joints of brickwork, is stuck up to the wall by the adhesive layer. Then the wall is plastered and the plaster fills up the apertures. After the plaster has dried and the network has been removed, a texture which looks like brick wall, is attained.

With a prior art method of this kind the template comprises nothing but a network of self-adhesive lands with free apertures therebetween, wherein the selfadhesive rear surfaces of the lands are covered by plastic strips or the like. Such a network is difficult to handle. Therefore, only rather small templates are used, quite a number of which has to be placed side by side .

Another template for a method of the present type is known from German utility model No. 75 30 244. The application of this prior art template to the wall is also complicated.

From DE-U-7 409 804 a wallpaper is known, which is covered on its backside by a very thin adhesive layer. Furthermore, a likewise very thin cardboard layer adheres there on the backside of the wallpaper by means of said adhesive layer.

It is the object of the invention to facilitate, in a method of the present type, the applying of the template to the surface and the handling of the template.

A further object of the invention is to provide a method of the present type, wherein the attained relief plastering looks as similar as possible to brick-work or clinker with regard to colour and surface texture.

It is a more specific object of the invention to enable also a non-professional to apply plaster in clinkershape to a wall surface.

A still further object of the invention is to make a clinker-like relief plastering using conventional mineral plaster.

According to the invention (d) the network adheres by means of the removable ahesive layer to a width of continuous carrier film also covering the apertures, (e) to apply the network to the surface, the carrier film is pulled off, at one end, from the network and this end is stuck to the surface, (f) the carrier film is then pulled off further to the same extent as the network is pressed onto the surface with the adhesive layer.

The invention also relates to a template according to claim 9.

Further details of the method of the invention and the templates used therewith are explained in the following description and are characterized in the claims.

Embodiments in greater drawings . of the invention are described hereinbelow detail with reference to the accompanying Fig. 1 shows a partial front view of a template, for carrying out the method of the invention, in an unrolled state.

Fig. 2 shows a side view of the template in folded state. Figs. 3 and 4 show metod steps when making a * relief plastering with a template as shown in Figs. 1 and 2.

Fig. 5 shows a partial front view of another embodiment of a template for carrying out the method of the invention.

Fig. 6 shows the template in rolled up state.

Figs. 7 to 13 show schematically the individual steps of making a relief plastering on a wall surface by means of .a template as shown in Figs. 5 and 6.

The template 10 for applying a brick-like relief plastering to a surface, e.g. a wall surface, has an arrangement of apertures 12 in a network 14 of lands defining the apertures 12 and made of moistureresistant material, e.g. impregnated cardboard, the thickness of which is equal to the desired joint depth. The lands are provided with a removable adhesive layer of a non-hardening adhesive, which is covered by a removable plastics film. Here this film of plastics is a continuous carrier film 16 which covers also the apertures 12.

As can be seen from Fig. 2, the carrier film 16 with the network 12 adhering thereto is folded in its initial state along the folding lines 18 (Fig. 1) in a zig-zag form. In this way, the template 10 with the carrier film 16 is easy to handle. For application of the network to the wall the carrier film 16 is pulled off at the upper end from the network 14 and this end is stuck up to the wall, as illustrated in Fig. 3. Then the carrier film 16 is further pulled off downwards to the same extent as the network 14 with the adhesive layer is pressed onto the wall 19. This can easily be done with the carrier film 16 folded in a zig-zag form.

The network 14 has spaced and parallel transverse lands 20, which extend transversely across the carrier film 16. The transverse lands 20 are interconnected by rows of spaced and parallel longitudinal lands 22 . The langitudinal lands 22 of one row ’ are staggered relative to the longitudinal lands of the adjacent row. In that t way elongated apertures 12 are attained in the illustrated embodiment, which correspond to the structure of brick-work. As can be seen from Fig. 1, the network 14 has lateral recesses 24 on one longitudinal side (on the right in Fig. 1) and projections 26 complementary thereto on the other longitudinal side (on the left in Fig. 1). These recesses and projections facilitate the alignment of adjacent templates 10. When one template has been applied to the wall the other can be aligned with the first, by fitting in the projections 26 of one template into the recesses of the other or vice versa.

After the template 10 has been stuck up to the wall 19 the wall is plastered in common way, such that the surface of the plaster flushes with the surface of the template 10. This is schematically illustrated in Fig. 4. Subsequently the template 10 with the network 14 is pulled off the wall 19. Thereby, joints corresponding to the network 14 are attained, the depth of which corresponds to the thickness of the material used for the template 10. Thus, a relief is attained, which has the appearance of a brick-work or clinker.

In the embodiment described above the template consists of lands of a material, such as impregnated cardboard, the thichness of which corresponds to the joint-depth. Therefore, the template is folded with the carrier film in a zig-zag form. Particular precautions at the edges make it possible also to stick up the widths but also exactly flushing perpendicularly not only with horizontally aligned lands. In another embodiment the network of lands is made of a tension-resistant, paperthin, flexible material.

The network with the carrier film can be rolled up in a roll in its initial state.

A method for applying relief plastering to a surface by means of a template of the present type is characterized by the steps: (a) removing an edge portion of the network from the carrier film and fastening it to the surface by means of the adhesive layer, (b) pulling off the network from the carrier film, such that the carrier film is unrolled from the roll to the same extent as the network is pulled off from the carrier film and is progressively fastened to the surface, (c) applying mineral plaster as spray in a plurality of layers to the surface provided with the network, and (d) pulling off the network from the wall surface with the part of the plaster which adheres to the lands, after the lowermost layer has dried but before the uppermost layer has hardened.

Such a network of paper-thin layer can be rolled up together with the carrier film. There is no need to stick up the widths of network in a flushing manner to the wall surface but it does no harm if the edges of the widths overlap insignificantly. After applying the plaster, the network of lands with the plaster adhering to it, can be pulled off and it leaves a texture of joints. Surprisingly, it has turned out that, for this joint formation no thickness of the lands adapted to the relief-depth is required. The dried lowermost layer of the material applied to the lands makes them sufficiently stiff, so that they can be pulled off with this material, without pulling along the material in the area of the apertures.

The application of spray rendering, however, requires appropriate equipment and therefore in practice is worthwhile only with large areas.

The template 30 for applying a brick-like relief plastering to a wall surface has an arrangement of apertures 32 in a network 34, the apertures 3 2 are defined by lands made of moisture- -resistant, tension resistant, paper- thin and flexible material, i.g. an impregnated, tension resistant paper. The lands are provided with a removable, adhesive layer of nonhardening adhesive, which is covered by a removable carrier film 36 extending also over the apertures 12.

The network 34 has spaced and parallel transverse lands 40 which extend transversely across the carrier film 36. The transverse lands 40 are interconnected by rows of spaced and parallel longitudinal lands 42. The longitudinal lands 42 of one row are staggered relative to the longitudinal lands of the adjacent row. In that manner, elongated apertures 32 are defined in the illustated embodiment, which correspond to the structure of brick-work.

As can be seen from Fig. 4 the network 30 with the carrier film 36 is rolled up in a roll in its initial state.

Fig. 5 to 11 show schematically the various steps of a method for applying a brick work-like relief plastering to a wall surface by means of a template 30 of the type described above.

First an edge portion 46 of the network 34 is removed from the carrier film 36. This edge portion 46 is affixed to a wall surface 48, by means of the adhesive layer, at the upper end of the area to which the relief plastering is to be applied. That is illustrated in Fig. 5. The network is pulled off the carrier film 36 in such a manner that the carrier film 36 is unrolled from the roll 44 to the same extent as the network 34 is pulled off from the carrier film 36 and is progressively affixed to the wall surface 48. In this manner it is possible to stick up several widths of network 34 like wallpaper widths side by side on the wall surface. Of course the transverse lands 40 must be in true alignment. However, it is not necessary to stick up the widths flushingly. It does no harm if the widths overlap insignificantly.

Then a plaster 50 is applied to the wall surface 48 provided with the network 34. The plaster 50 is applied by means of a known and not further described appliance 52 as a so called spray rendering. This is illustrated schematically in Fig. 6.

Usually spray rendering is sprayed on the wall in three layers, the respective lower layer having to dry before the next one is applied. The lowermost layer of spray rendering applied in the areas of the lands is slightly offset to the front relative to the layer applied in the areas of the apertures. After the layers have dried, those portions of the lowermost layer which adhere to the lands are therefore connected only incoherently or not at all with the portions of the lowermost layer which are applied directly to the background in the areas of the apertures. After a second and a third layer have been applied, a thickness of the plaster is achieved which is substantially equal to the joint depth.

Finally, before the uppermost layer has hardened, the network 34, with the portion 53 of the plaster 50 which adheres to the lands 40, 42 is pulled off from the wall surface, as shown in Fig. 7. The paper-thin material of the network 34 with the spray rendering of the lowermost layer applied thereto, forms a structure that is stiff enough to allow pulling off the network.

By applying the plaster in the form of spray rendering, the lateral binding between the plaster adhering to the lands 40, 42 and the portions of the plaster adhering to the wall surface 48 itself in the apertures 32, is relatively weak. For that reason it is possible to pull off the network 34 with the plaster adhering to it, without damaging the portions of plaster 50 which correspond to the apertures 42. The spray rendering results in a very beautiful surface structure. A plastering which has the structure of brick work is obtained.

When there is no first coating or if unevennesses must be adjusted, it is advantageous, with both kinds of relief plastering, to apply to the wall a first coating which is coloured in the wanted joint colour before applying the network to obtain the wall surface 48. If there is a first coating, the wall surface is cleaned at first. Afterwards an adhesive layer which is coloured in the desired joint colour is applied with a conventional paint roller. The described template is stuck to the wall after the wall surface has dried. After the application of the network 34 plaster having the desired colour of the a coloured clinker is applied in the described manner to the first coating.

As shown in Fig. 8, joint edges 54 which may project after pulling off the network 34 from the wall surface, as shown in Fig. 7, are leveled out by means of a joint roller 56. The loint roller 56 has a generally cylindrical roller body 58 and is guided along the joints by means of one or more projecting circumferential ridges 60, of which hight and width are substantially equal to the depth and width, respectively, of the obtained joints. The roller body 58 is mounted, like a standard paint roller, rotatably on the leg of a yoke 62, the other leg of which carries a rotatable handle 64.

For attaining a relief plastering surface structure similar to clinker or brick-work, a texture-roller 66 which has irregularly projecting portions 67 is moved over the surface after application of the plaster and is pressed into the still soft plaster with the projecting portions. Thus, an irregular surface structure similar to genuine clinker is attained. That is shown schematically in Fig. 9. The texture-roller 66 is mounted rotatably, similar to a paint-roller, on one leg of a yoke 68. The other leg of the yoke 68 again carries a rotatable handle 70.

Often the colour of genuine, natural clinker varies across the surface. To imitate this effect, a paint mask 72, for attaining extra colour effects, is placed over the attained joints after pulling off the network 34, and the remaining surface is powdered with paint powder by means of an atomizer 74. The applied coloured powder is mingled on the surface with the non-hardened plaster, by moving a smoothing tool 76 across the surface texture. That is shown in Figs. 10 and 11.

Other relief structures, e.g. tile-textures can be attained in similar way.

Claims (5)

1. Method for applying relief plastering with joints on a surface, wherein (a) a network (14;34) of lands (20,22 ; 40,42), made of moisture-resistant material and corresponding to the structure of joints, is applied to the surface by means of a removable adhesive layer, apertures (12;32) being formed between these lands, (b) a plaster (50) is subsequently applied to the surface (48) provided with the network (14; 34), and (c) next, the network (14; 34) is pulled off the surface (48) such that in the areas of the 15 apertures (12;32), projecting surface portions, and in the areas of the lands (20,22,-40,42), receding joint-like surface portions are obtained, characterized in that (d) the network (14; 34) adheres by means of the removable ahesive layer to a width-shaped continuous carrier film (16;36) also covering the apertures (12,-32), (e) to apply the network (14;34) to the surface (48), the carrier film (16;36) is pulled off on one end (46) from the network (14,-34) and this end (46) is stuck to the surface (48), (f) the carrier film (16,-36) is then pulled off further to the same extent as the network (14,-34) is pressed onto the surface (48) with the adhesive layer.

2. Method as set forth in claim 1, characterized in that, after the network (14,-34) has been applied, a coloured plaster (50) is applied to the first coating.

3. Method as set forth in claim 1, using a template according to claim 5, wherein the network (34) and the carrier film (36), in their initial state, are rolled up together in a roll (44), characterized by the method steps of (a) pulling off the network (34) from the carrier film (36), such that the carrier film (36) is unrolled from the roll (44) to the same extent as the network (34) is pulled off from the carrier film (36) and is progressively fastened to the surface (48), (b) applying mineral plaster as plurality of layers to the provided with the network (34), spray in a surface (48) and (c) pulling off the network (34) from the surface (48) with the part of the plaster (50) which adheres to the lands, after the lowermost layer has dried but before the uppermost layer has hardened.

4. Template for applying relief-plastering to a wall surface which has an arrangement of apertures (12) 5 in a network (14) of lands defining the apertures (12) and is made of a moisture-resistant material of which the thickness is adapted to the depth of the relief, the lands being provided with a removable adhesive layer which is covered by a 10 removable plastics layer, characterized in that (a) the plastics layer is formed of a continuous carrier film (16) also covering the apertures, and (b) the carrier film (16) with the network (14) 15 adhering to it is folded in a zig-zag form.

5. Template as set forth in claim 4, characterized in that the network (34) of lands is made of a tension-resistant, paper-thin, flexible material.