DE10256136B4 - Method for producing a framework imitation - Google Patents

Abstract

Method for producing a framework imitation, comprising the following steps:
• producing a building wall (1, 5);
• identification of the desired course of imitation timber beams (2) on the plastered building wall;
Covering the wall sections outside the marking with masking tapes, foils or similar flexible materials;
• applying a 1-2 mm thick first mortar layer (6) of well-adhering thin-bed mortar to the areas of the imitation timber beams (2);
Applying an approximately 3-8 mm thick second mortar layer (7) on the still moist first mortar layer (6);
Drying the second layer of mortar for about 1 to 4 hours so that the second layer of mortar is still plastically deformable;
• introducing a structuring (8) into the second mortar layer (7), which in its course corresponds to the natural structure of wood;
• Removal of the cover of the non-marking wall sections after application of the second mortar layer (7) and subsequent application of a ...

Description

The The present invention relates to a process for the preparation of a Half-timbered imitation, whereby by this framework imitation on a Building wall the visual impression of the presence of timber beams made of wood.

Around building walls Building in the traditional half-timbered style will be a key Construction created from wooden beams, taking the between individual Beam sections remaining cavities, the so-called compartments, filled with other building materials (for example Lightweight bricks, bricks, straw-clay mixtures, etc.). The wooden beam construction takes over in these designs, the supporting function. The establishment of traditional Half-timbered buildings is time-consuming and expensive. In addition, revealed disadvantages with regard to the desired thermal insulation properties. Due to the environmental influences it comes to different expansion behavior between the wooden beams and the building materials contained in the compartments, leaving unwanted cracks and columns in the building wall occur. In these openings Water may then enter, causing permanent damage Building substance leads.

In spite of the known disadvantages enjoy the specific look of half-timbered buildings increasing in popularity in certain regions. Therefore, will partly tried the appearance of a half-timbered wall too to replicate on massive walls. For example, there are numerous on a massive brick wall Wooden planks attached, which are arranged in the form of half-timbered beams. The gaps be using thermal insulation materials and / or plaster filled, so that the resulting appearance of those of a timbered wall largely equivalent. However, such designs are relatively expensive since in addition to the for the functioning of the building wall necessary construction work made Need to become. If the wooden planks used are too thin, It can come to deformations, through which the desired appearance severely impaired becomes. Furthermore cracks develop between due to the environmental influences the wooden planks and the adjacent plaster. In such cracks penetrates moisture which leads to a lasting damage to the half-timbered imitation and the underlying structure to lead can. After all it is disadvantageous that the displayed wooden planks the most frequently Exterior walls provided insulation for full thermal insulation interrupts so that the thermal insulation overall deteriorated.

The DE 36 21 382 A1 describes a method for producing a framework imitation by casting in lightweight concrete. An outer formwork surface is provided on the side facing the house with surface-structured form elements. The form elements have the outer shape of the visible surface of the truss beams, are arranged like these and structured in the surface as a negative structure of the wood. The free areas between the bars contain form elements with the negative image of a clinker or plaster surface. After demoulding the lightweight concrete, the framework structure produced receives a coat of paint. Although a wood structure can be produced with this method, the form elements must be fabricated beforehand in such a way that they have an exact image of the later desired wood structure. The structuring can not be changed after casting.

The DE 23 32 263 A shows a method for producing an artificial brick wall, in which first a thin first putty mass layer is applied with the appearance of mortar. Subsequently, the course of bricks on the cured, dried first filler layer is marked. In a next step, adhesive tape is glued to this first leveling compound layer in a grid shape. This is followed by the application of a second layer of material of contrasting colored material with the appearance of bricks. Before curing the second layer, the adhesive tape is removed in a last step. The adhesive tape is coated on one side with a contact adhesive, which ensures the adhesion of the tape to the first layer and at the same time prevents material of the second layer from getting under the adhesive tape. The adhesive tape thus serves primarily to protect the underlying mortar joints simulated by the first layer. Structuring of the applied layers does not take place.

The The object of the present invention is thus a method to provide a framework imitation, with which the view of a building wall like that of a real half-timbered wall can be designed, but avoiding the state of the art known in the art disadvantages.

These The object is achieved by the method according to the invention, the Process steps in the attached Claim 1 are given.

The main advantage is that the framework imitation is created by specially treated mortar layers, which are structured and provided with a desired color. Around To produce the framework imitation, no wood is needed, so that the complex assembly operations completely eliminated. In addition, the outer layer of the building wall has a nearly homogeneous composition, so that no cracks between the imitated truss areas and the intermediate building materials may arise due to different expansion behavior.

One Another advantage is the fact that by waiving Wooden beams or wooden planks of maintenance work for the building walls drastically decreases. As far as conventional Procedure real wood is used, this must be less in the distance Years cleaned and be provided with a new coat of paint to a long To obtain durability.

Besides that is It is particularly advantageous that a mounted on the building wall Thermal insulation is no longer interrupted. The closed insulation layer remains despite the imitated framework preserved.

Of the desired visual impression leaves reach through the special structuring of the mortar layers. Around at the same time a high durability of these layers on the building wall To ensure that, in a first step, a first layer of mortar applied from thin-bed mortar, which ensures a permanent connection to the ground. On this layer becomes a second layer of mortar with greater thickness applied, in which the structure is formed. Leave it to create deeper and sublime areas suitable for one realistic visual impression are necessary.

Further Advantages, details and further developments result from the following description of preferred embodiments of the invention, with reference to the drawing. Show it:

1 a simplified view of a building wall with a framework imitation;

2 a simplified sectional view of a section of the framework imitation;

3 a photographic detail of the framework imitation after its completion.

1 shows a schematic representation of a building wall 1 , on which in the upper area a framework imitation is attached. The framework imitation consists of individual imitated timber beams 2 whose structure will be described in more detail below. The imitated timber beams 2 are arranged in terms of their location so that the impression of a traditional truss structure arises. Between the imitated timber beams 2 are formed numerous compartments, which have on their surface an ordinary layer of plaster. It would also be conceivable in modified embodiments that the surface of the compartments 3 are designed by a brick imitation or with other materials, if the impression of a bricked truss or the like is to be awakened.

2 shows a schematic cross-sectional representation of the framework imitation. Together with the description of the individual components of the half-timbered imitation, the essential process steps are given, which must be carried out for the production of this half-timbered imitation.

The background for the framework imitation is the building wall 1 which may be, for example, a brick wall. The building wall 1 is prepared in a conventional manner and by conventional means and methods with a surface plaster 5 Mistake. The surface plaster can be applied to a thermal barrier coating (eg made of styrofoam) or also be replaced by suitable thermal insulation materials. On the surface plaster 5 then the desired course of the imitated timber beams is marked. For this stencils can be used. In order to give a realistic impression, the markings should not have too exact lines, as the wooden beams in traditional trusses also do not have exactly straight outer edges. It has been proven to mark the course of the imitation timber beams by hand on the surface plaster.

After this the history has been flagged will be those outside the label Wall sections covered to prevent unwanted material in to prevent these areas. This cover can be self-adhesive masking tapes, Foils or similar Materials are made.

On the remaining surfaces, which correspond to the course of the imitated timber beams, now a first layer of mortar 6 applied with a thickness of 1 to 2 mm. As this first mortar layer a permanent connection to the surface plaster 5 to produce, a well-adhesive thin-bed mortar (special mortar) is used. The first layer of mortar should dry for a short time so that additional layers can be applied. However, care must be taken to ensure that the first layer of mortar does not completely dry out in order to ensure good bonding to the subsequent layers Afford.

On the still moistened first layer of mortar 6 is then a second layer of mortar 7 applied with a thickness of about 3 to 8 mm. The thickness of the second layer of mortar may vary to emulate plastic effects particularly well. An average thickness of about 5 mm has proven to be particularly useful for the second layer of mortar. To achieve a high durability, there is the second layer of mortar 7 preferably from the same special mortar as the first layer of mortar 6 , In the case of modified embodiments, however, ordinary mortar or plaster can also be used for the second mortar layer, with good adhesion to the underlying first mortar layer being desired.

After this the second layer of mortar The coverage of the adjacent wall areas can be applied be removed, even before the applied mortar layers are completely dried. This results in a substantially straight edge, however sufficient unevenness has to give a realistic impression a wooden beam.

After the second layer of mortar 7 was applied, this has a relatively smooth surface for the time being. However, it is desirable that the surface be patterned wood-like, to give the impression of the grain of the wood beams. For this purpose, the structuring is introduced into the second mortar layer from above. This can be easily realized if the second layer of mortar has sufficient residual moisture to be able to impress the surface in a groove shape without destroying the entire layer. For the formation of a structuring in the longitudinal direction is particularly suitable a zig-zag notched spatula, which is pulled over the surface in the longitudinal direction. Through this structuring process are numerous structural grooves 8th introduced into the surface of the second layer of mortar. Before the structuring is carried out, the second layer of mortar should dry for about one to four hours, depending on the processing temperature, mortar moisture and weather conditions.

Around when using a toothed spatula for structuring the emergence too rough or jagged surface To avoid it is expedient if After structuring, a post-treatment of the surface with a moistened brush, a brush or similar Tool performed becomes.

In order to mimic larger cracks in the truss beams that occur in real framework by drying the wood, additional structuring with a trowel or a similar sharp object in the surface of the second mortar layer 7 be introduced. Likewise, the fidelity to reality is enhanced when individual areas of the surface are treated with a bale of steel wool (for example, in the manner of a conventional pot scratcher) with circular and / or dabbing motions to mimic Astansätze in half-timbered beam. In addition, in the branch area, the longitudinal structures are guided elliptically around the branch center.

A changed Structuring must be selected become, if so-called end wood is to be imitated. To the Front sides of wooden beams can be recognized by the individual annual rings. In the half-timbered imitation, one circular structure becomes the second mortar layer brought in by the surface annular Grooved be scratched, for example with the help of a trowel. Subsequently the beam head is dabbed with the steel wool around the areas to structure finely between the annual rings.

Traditional trusses often use wooden nails, which can also be produced by the framework imitation. In addition, mortar is applied in demarcated areas to a wooden nail head 9 as an increase on the second layer of mortar 7 to create.

After all structuring has been carried out, the mortar layers are allowed to dry completely for about 2 to 3 days. Subsequently, the wall areas adjacent to the framework imitation are covered again. In a final process step, the imitation timbered beams with a color layer 11 provided in order to obtain the usual color scheme for conventional truss.

3 shows a photographic representation of a detail of the finished framework imitation. The sections 3 between the imitation timber beams 2 are designed in this embodiment with a conventional roughcast. Between two elongated timber beams 2 is also a beam head 10 recognizable, in which the structuring was done in the manner of end wood. Also are in 3 two wooden nail heads 9 shown passing over the surface of the second layer of mortar 7 stick out.

It It should be noted that the framework imitation under execution of the described process steps produced with very diverse structuring can be. Besides the exemplified tools can also other aids are used.

1

building wall

2

imitated Timber framing

3

Gefach

5

surface cleaning

6

first mortar layer

7

second mortar layer

8th

structural grooves

9

Wooden nail head

10

Balkenkopf

11

coat of paint

Claims (8)

Method for producing a framework imitation comprising the following steps: • producing a building wall ( 1 . 5 ); • identification of the desired course of imitation timber beams ( 2 ) on the plastered building wall; Covering the wall sections outside the marking with masking tapes, foils or similar flexible materials; Applying an approx. 1-2 mm thick first layer of mortar ( 6 ) of well-adhering thin-bed mortar on the areas of the imitation timber beams ( 2 ); Application of an approx. 3-8 mm thick second mortar layer ( 7 ) on the still moist first layer of mortar ( 6 ); Drying the second layer of mortar for about 1 to 4 hours so that the second layer of mortar is still plastically deformable; • introducing a structuring ( 8th ) into the second layer of mortar ( 7 ), which in its course corresponds to the natural structure of wood; • removal of the cover of the non-marking wall sections after application of the second mortar layer ( 7 ) and subsequent application of a new cover on the outside of the marking wall sections; • applying at least one color layer ( 11 ) on the structured second layer of mortar ( 7 ). Method according to claim 1, characterized in that the second layer of mortar ( 7 ) after the introduction of the structuring ( 8th ) and before applying the paint layer ( 11 ) is dried for about 2 to 3 days. A method according to claim 1 or 2, characterized in that in the longitudinal direction of the imitated timber beams ( 2 ) structuring ( 8th ) is introduced with a zig-zag tooth spatula. Method according to one of claims 1 to 3, characterized that the structuring imitating a knot attachment with a bale made of steel wool is introduced. Method according to one of claims 1 to 4, characterized in that the one end face ( 10 ) of a truss beam imitating structuring are introduced as arcuate grooves with a trowel. Method according to one of claims 1 to 5, characterized in that before the application of the color layer ( 11 ) on the second layer of mortar ( 7 ) in limited areas, a third layer of mortar is applied to wood nail heads ( 9 ) or similar surveys. Method according to one of claims 1 to 6, characterized in that on the building wall ( 1 ) before applying the first layer of mortar ( 6 ) consistently a surface plaster ( 5 ) is applied. Method according to one of claims 1 to 7, characterized in that on the building wall ( 1 ) before applying the first layer of mortar ( 6 ) is consistently applied a full heat protection layer.