Covering system for noise damping of building walls

Abstract

The invention relates to a covering system (10) for noise damping of walls (20) or ceilings in buildings with a multi-layer composition of at least two layers of different materials with a damping layer (1) adjacent to the wall (20) or ceiling consisting of a plurality of individual panels (3) or sheets of an acoustic damping material arranged next to one another and with an overlying covering layer (2) that covers the panels (3) or sheets, wherein the damping layer (1) and the covering layer (2) are each made of non-rigid materials with sound-absorbing damping properties and wherein the covering layer (2) has a low thickness of 20% or less of the thickness of the damping layer (1), wherein acoustic damping means (2.1) are provided for closing joints (4) between the panels (3) or sheets of the damping layer (1) and wherein the covering layer (2) is provided on the damping layer (1) across a surface of the wall (20) or ceiling to be acoustically damped, without interruption and overlapping joints (4) for continuous, uniform sound absorption.

Description

[0001] Covering system for soundproofing building walls

[0002] The present invention relates to a covering system for soundproofing walls or ceilings in buildings to reduce noise for the purposes of sound insulation or acoustic optimization. The invention particularly relates to such a covering system in which at least two layers of different materials are used to achieve the reduction or elimination of disturbing noises and the associated improvement in acoustics in building spaces with a multi-layer composition.

[0003] For the purposes of noise reduction and sound insulation optimization, various systems based on materials with sound-damping properties have been proposed in the prior art. For example, rigid and hard acoustic panels made of open-pore materials have been used to acoustically dampen large areas of building walls or ceilings. The materials used in the prior art for such acoustic wall components include, for example, panels made of expanded glass or rigid panels made of foamed materials or natural materials, such as hemp fibers. These panels are cut to the appropriate shape of the wall to be acoustically treated and then attached to the walls with adhesives or similar means. However, the processing and use of such rigid acoustic damping panels have significant disadvantages with regard to flexibility of application, processing, and cost.The rigid soundproofing panels require laborious sawing and cutting. Furthermore, specialists are usually required to install such soundproofing panels made of rigid damping materials for acoustically dampening building walls. Last but not least, the costs of manufacturing expanded glass panels and applying the special plastering materials applied to them are relatively high.

[0004] It is also known in the prior art to use soundproofing elements made of an open-cell or open-pore foam material, such as acoustic foam, which are glued to the substrate. However, the problem is that the necessary visual and architectural finishing of such soundproofing elements is difficult. Wallpapering or further finishing the exterior of such foam soundproofing elements is only possible with considerable effort, as applying wallpaper paste or similar materials is generally not possible. This also creates undesirable grooves or gaps between the individual elements mounted side by side.

[0005] Against this background, it is the object of the present invention to provide an improved covering system for soundproofing walls or ceilings of buildings with a multi-layer composition of at least two layers, which is improved in terms of flexibility of application, enables easier processing even by non-professional personnel and enables optimized soundproofing together with an improved indoor climate situation.

[0006] This object is achieved with a covering system having the features of claim 1. Advantageous embodiments and further developments of the invention are the subject of the dependent claims.

[0007] According to the invention, a covering system for soundproofing walls or ceilings in buildings is provided, comprising a multi-layer composition of at least two layers of different materials, with a damping layer adjacent to the wall or ceiling made of a plurality of juxtaposed individual panels or sheets of an acoustic damping material and with an overlying cover layer covering the panels, wherein the damping layer and the cover layer are each made of non-rigid materials with sound-absorbing damping properties and wherein the cover layer has a thickness of 20% or less of the thickness of the damping layer, wherein the covering system is characterized in thatthat acoustically dampening means are provided for closing joints between the panels or sheets of the damping layer, and that the covering layer on the damping layer is provided across an area of ​​the wall or ceiling to be acoustically dampened, without interruption and across joints, for continuous, uniform sound absorption. The covering system for sound absorption according to the invention thus comprises at least two different plies or layers of different materials, each with an acoustic sound-damping property: On the one hand, a basic damping layer is provided, which is applied directly or indirectly to the wall or ceiling and is made of individual, i.e., discrete panels or sheets that can be cut to size and attached to the wall as required. On the other hand, a covering layer is provided on the outside, which is also made of an acoustic damping material.Wherein both the top layer and the base layer or damping layer are made of a non-rigid material, and where the top layer has a thickness of 20% or less of the thickness of the damping layer. Both materials of the respective damping layer and top layer of the flooring system are made of acoustically effective, non-rigid, i.e., flexible materials, whereupon gaps or joints that may arise between the individual panels or individual sheets of the damping layer are sealed.An acoustically dampening agent is also provided. According to the invention, the joints are thus also completely sealed with an acoustically effective material and, together with the covering layer, which is provided continuously across the entire surface – i.e., without interruption – they form a completely acoustically uniform covering of the wall or ceiling in a building. This applies both to the visible exterior of the covering system and its interior.

[0008] The covering of the panels or sheets of the damping layer is achieved using a special, acoustically effective covering layer material, which preferably has a thickness of approximately 20% or less than the thickness of the base layer or damping layer. This measure provides an easy-to-use covering system for highly effective sound absorption in the interior design of buildings. The non-rigid, flexible or bendable material sheets or panels made of foam, nonwoven materials, a combination of nonwoven and acoustic foam, or similar materials can initially be easily applied and secured to the wall or ceiling substrate using appropriate bonding methods such as adhesives or the like, without requiring any special expertise.Subsequently, the resulting joints are sealed according to the invention with a sound-acoustically effective agent and, in addition, with a covering layer, creating a consistently flat outer surface of the acoustically effective flooring system. The underlying damping layer, together with the covering layer, provides additionally effective acoustic sound absorption for interior spaces as well as for other applications where sound penetrating to the outside is to be reduced. By comprehensively covering the joints with the covering layer, the invention creates a uniform, completely seamless, and harmonious appearance.

[0009] According to an advantageous embodiment of the invention, the means for sealing the joints between the panels of the damping layer material and / or the material of the covering layer are formed from a material that can be applied in a liquid or pasty state, similar to liquid wallpaper. The damping layer applied to the wall can thus be realized from discrete or individual panels or sheets, while the overlying covering layer and / or the means for sealing the joints between the panels can simply be applied over it from a material that is at least initially liquid or pasty, which then solidifies after drying but remains flexible and therefore non-rigid. This significantly simplifies processing. The non-rigid panels of the damping layer are cut to size according to the respective surface to be treated and applied or glued on.A second, equally acoustically effective covering layer is then applied on top. In its original state, i.e. in the state intended for application, it is initially liquid or pasty. This covering layer can therefore be easily applied and evenly spread like liquid wallpaper, filling all joints. The result is a seamless, visually appealing exterior surface, while acoustic dampening is maintained or even further improved both in the area between the individual panels and on the panels themselves. This provides an improved and easier-to-apply acoustic covering system for walls or ceilings in buildings. This system can also be adapted to specific requirements regarding the shape and level of acoustic dampening and other properties, such as thermal insulation, as needed., can be optimally adapted. According to the invention, this is now possible with a system of acoustic damping covering with multiple layers that is comparatively easy to use and can be applied without specialist knowledge. The system consists of at least two different materials and is correspondingly easier to process than the previous rigid acoustic damping panels, for example, made of expanded glass or hemp fibers.

[0010] According to a further advantageous embodiment of the invention, the individual panels of the damping layer are made of an elastically deformable, open-pored material with sound-absorbing properties, in particular a nonwoven material or an acoustic foam such as, for example, a melamine foam, or a combination thereof. According to the invention, the damping layer thus consists of a non-rigid material in the form of individual panels or sheets, which is an elastically deformable, open-pored material with sound-absorbing properties. Non-rigid materials are understood here to mean, in particular, materials that have no inherent rigidity in the sense that they are not flexible or flexible, such as, for example,The rigid acoustic panels made of expanded glass or hemp fibers used in the prior art, although they are also open-pored and acoustically effective panels, have significant disadvantages in terms of production, processing, and effectiveness. The panels or sheets of the damping layer according to the invention are made, for example, of flexible nonwoven material made of natural or synthetic nonwovens or fibers that have relatively good acoustic damping properties. Alternatively, the elastically deformable, open-pored panels or sheets of the damping layer can also be made of a so-called non-rigid acoustic foam or a combination of nonwoven and foam materials.The symbiosis of open-pored, non-rigid panels or sheets of the damping layer with an overlying covering layer that also has an acoustic effect but is applied or laid across the joints has proven to be particularly effective, since the different acoustic damping properties of both layers can further improve the room acoustics compared to conventional acoustic damping systems of this type.

[0011] The covering system created in this way can be used to equip both newly constructed buildings and existing building spaces. This enables highly effective sound insulation using relatively simple means and relatively low application thicknesses. Previously known acoustic damping panels made of rigid materials, such as expanded glass panels, generally required a relatively thick application layer of > 10 mm due to their inherent design. With the covering system according to the invention, individually tailored acoustic damping properties can now be created in rooms using lower thicknesses thanks to the combination of two different, yet acoustically effective materials in the basic damping layer made of nonwovens or acoustic foam and the covering layer above, which also has acoustically damping properties.In the new covering system according to the invention, both the joints and the entire surface are uniformly provided with the covering layer in the sense of a virtually invisible and visually unobtrusive sound absorption.

[0012] According to a further advantageous embodiment of the invention, the means for sealing the joints are also formed by the material of the covering layer itself. This means that the joints or gaps between the individual separate panels or sheets of the damping layer are filled with a material that corresponds to the material of the covering layer as a whole. The covering layer thus extends not only along the outer surfaces of the panels in the damping layer, but in this embodiment of the invention also penetrates into the spaces between the individual panels and seals them, providing the corresponding additional acoustic optimization of the building space due to the lack of non-damped spaces in the material.For a basic construction of the covering system according to the invention, essentially only two layers of different materials are required: first, the application of the damping layer panels to the wall or ceiling of the building, followed by the application of the covering layer and the jointing layer, which consist of the same second material, for example, a type of liquid wallpaper based on cotton or other artificial or natural compositions for liquid application. The processing and application of the covering system for soundproofing walls or ceilings according to the invention is thus significantly simplified.Even non-professionals can easily attach the corresponding elements, namely the panels of the damping layer, to the wall and then apply, for example, a pasty or, in its original state, liquid top layer to the exterior, incorporating it into the gaps and joints between the panels. The end result is a consistently uniform and evenly smooth exterior design, both inside and out, and a sound-effective interior structure of the flooring system. The interior consists of two acoustically effective materials, allowing the individual damping effects to be optimized for each room by combining different materials for the top layer and the damping layer.

[0013] According to a further advantageous embodiment of the invention, both the damping layer and the covering layer are essentially permeable to water vapor. Thus, neither the damping layer nor the covering layer has a vapor barrier or layer that impedes the penetration of water vapor. In the prior art, acoustically effective panels were sometimes used as a base for wallpapering rooms. These panels were provided with an additional waterproof bonding layer so that conventional wallpaper could be subsequently applied to line the walls. However, such waterproof layers impede the penetration of moisture and ultimately lead to disadvantages in terms of room air conditioning, the accumulation of condensation, or even the formation of mold.With the covering system according to the invention, water vapor can pass through both the covering layer and the damping layer, so that fluctuations in air humidity can be compensated and an undetected harmful accumulation of moisture between the covering system and the wall itself or the ceiling can be effectively avoided.

[0014] According to a further advantageous embodiment of the invention, the density of the covering layer material is higher than the density of the damping layer material. Thus, a relatively flexible or elastically deformable material layer made of panels or sheets can be used as the damping layer, which has a relatively high acoustic damping effect. On the outer side of the covering system facing the room, namely the covering layer side, a non-rigid material with a higher density is used to ensure sufficient strength of the wall overall after application of the covering system. For example, the damping layer can be made of a material with a density of 10 to 30 kg / m 3 be provided in the form of a nonwoven material made of plates or sheets or in the form of a melamine foam in the form of individual plates of the damping layer with a density of, for example, 5 to 8 kg / m 3The cover layer is also formed to be non-rigid overall, meaning it is flexible. With such a combination of materials of different densities in the damping layer on the one hand and the cover layer on the other, the invention also allows the acoustic damping effects to be specifically adjusted according to requirements and the use of a room, for example, optimized for the damping of conversations or increased acoustic damping for other noise sources or specific frequency ranges. This also allows, for example, different sound damping properties on the walls and / or ceilings to be adjusted accordingly depending on requirements and the use of the room.

[0015] According to a further advantageous embodiment of the invention, at least the damping layer has thermal insulation properties with a thermal conductivity, in particular in the range of at least 0.038 to 0.040 W / mK. In this way, the covering system according to the invention, in addition to acoustic damping, can also incorporate thermal insulation properties or climatic aspects without the need for additional layers or materials by appropriately selecting the materials for the at least two material layers, namely the damping layer and the covering layer.

[0016] According to a further advantageous embodiment of the invention, the damping layer comprises an acoustic foam, in particular a melamine foam, with a density of < 8 kg / m 3 Alternatively, the damping layer comprises a nonwoven material, for example in the form of sheets or in the form of webs as the original rolling stock, with a density of £ 10-30 kg / m 3According to the invention, the damping layer can be provided in particular in thicknesses of 10 to 20 mm. However, it can also have thicknesses of less than 10 mm or more than 20 mm (measured according to the standard for thickness measurement of nonwovens DIN EN ISO 9073-2 with a measuring area of ​​10 x 10 cm). Nonwovens within the meaning of the invention are preferably volume nonwovens with a thickness of greater than 5 mm, made of polyester or blends of polyester and cotton. Melamine resin-based foams are preferably used as acoustic foam. Alternatively, polyurethane-based foams can also be used as sheets or panels of the damping layer in the covering system according to the invention for noise reduction.

[0017] According to a further advantageous embodiment of the invention, a primer in the form of a further layer is provided between the damping layer and the covering layer, in particular a water vapor-permeable primer. The primer has the advantage of allowing a wider selection of materials for the covering layer applied over it and the damping material in the joints. In particular, it is thus possible, for example, to apply covering layers to acoustic foam damping layers, which otherwise could not be used as an intermediate layer or coupling layer without a primer. The use of various forms of, for example, liquid wallpaper or other covering materials as a covering layer is thus enabled. Liquid wallpapers, for example those based on cotton, can also be used, which, thanks to the primer on the panels of the damping layer, adhere securely to the material of the damping layer over the long term.In particular, water vapor-permeable forms of primers can be used as a primer, which can be applied as a thin covering layer, for example by brushing or troweling. A primer can also be used for optical reasons, for example, to prevent the joints or the material of the damping layer from showing through in relatively thin covering layers. A uniform white color impression on the exterior, for example, can be created using various types of primers. A natural-based primer using sand and lime, in particular shell limestone, is preferred for the covering system according to the invention. According to a further advantageous embodiment of the invention, the panels or sheets of the damping layer are adapted on at least one side in order to be attached to the walls or ceilings of the building using water-based assembly adhesives or adhesives.This measure makes it possible to simply apply the panels used as a damping layer to the walls using a water-based mounting adhesive or paste after appropriate cutting, for example, using conventional wallpaper paste or other water-based wall adhesives. This significantly simplifies the processing and use of the acoustically dampening covering system according to the invention compared to conventional acoustic dampening systems of this type, which usually require special adhesives and skilled personnel for installation.

[0018] Further advantages, features, and aspects of the invention will be described in more detail below using several exemplary embodiments in conjunction with the accompanying drawing figures. The drawing figures show:

[0019] Fig. 1 is a perspective view of a first embodiment of a covering system according to the invention with panels of the damping layer made of an acoustic foam;

[0020] Fig. 2 is a perspective, partially exploded view of a second embodiment of a covering system according to the invention with a stepped cover layer and a damping layer made of a nonwoven material;

[0021] Fig. 3 is a cross-sectional view of a third embodiment of a covering system according to the invention with acoustic foam as a damping layer; and

[0022] Fig. 4 is a perspective view of a fourth embodiment of a covering system according to the invention with a partially torn cover layer and a damping layer made of elongated webs of a nonwoven material.

[0023] The covering system 10 according to the invention for soundproofing in rooms of buildings, in its simplest embodiment, as shown in Fig. 1 and Fig. 2, essentially comprises at least two different layers or material plies, namely, a damping layer 1 applied to the wall 20 or ceiling and, above it, a covering layer 2 applied to the outside (visible side), each of which is formed from different materials with sound-absorbing damping properties. The damping layer 1 consists of a plurality of adjacently arranged individual panels 3 or sheets formed from an acoustic damping material, which can be attached to the wall 20 using, for example, wall adhesive 5, wallpaper paste, or similar water-based mounting adhesives (see Fig. 2).The second layer of the covering layer 2, subsequently applied to the panels 3 of the damping layer 1, is also made of a sound-absorbing material with acoustically damping properties and has a thickness that is smaller than that of the damping layer 1, approximately 20% or less of the thickness of the damping layer 1 made of panels 5. The covering layer 2 is provided in such a shape and with such properties that it covers the damping layer 1 over the entire area of ​​the wall or ceiling to be acoustically dampened and forms a continuous covering of the underlying panels 3 of the damping layer 1, even extending across joints 4 between the panels 3. The covering system 10 further comprises means 2.1 for the special, also acoustically insulated sealing of the joints 4 between the individual panels 3 or webs of the damping layer 1. These means 2.1 are also acoustically dampened, so that a multi-layer composition of the covering system 10 is ultimately formed that is completely closed both inside and towards the visible outside, which allows effective acoustic noise dampening of interior spaces in buildings without the disadvantages of conventional systems of this type.

[0024] In the first embodiment of Fig. 1, a plurality of panels 3 made of acoustic foam are provided as the damping layer 1, which are attached to a wall 20 or ceiling in such a way that gaps 4 or gaps can be created between them. In order to completely seal the gaps 4 and gaps, also acoustically effectively, the invention provides special materials or means 2.1 for sealing the gaps 4. These means 2.1 can be formed separately from the material 2.2 of the covering layer 2 or from the same material 2.2 as the covering layer 2. In the example shown in Fig. 1, the covering layer 2, for example in the form of a type of liquid wallpaper based on cotton or other natural materials, is applied to the previously attached panels 3 of the damping layer 1, in such a form that the material 2.2 of the covering layer 2 also seals the gaps 4 between the panels 3 as means 2.1 for acoustic damping and sealing of the joints 4. This ultimately provides a highly acoustically effective multi-layer construction with the covering system 10 according to the invention.

[0025] The panels 3 of the damping layer 1 made of acoustic foam can, for example, be realized in the form of non-rigid melamine foam panels. The damping layer 1 and the covering layer 2 are coordinated in terms of thickness and material selection so that together they offer highly effective sound absorption for noises occurring in the interior, while still being easy to process and install. The panels 3 can, for example, be attached to walls 20 or ceilings using simple water-based wallpaper paste 5 (cf. Fig. 2). The liquid wallpaper as the covering layer 2 can then also be applied using corresponding simple steps and at the same time serve to close the joints 4 with the material 2.1, 2.2 of the covering layer 2. The covering system 10 thus formed according to the invention then offers, as shown in a second example in the perspective view of Fig.2 with a nonwoven material of the damping layer 1, a completely closed outer surface, also visually, is created, which no longer has any gaps between individual acoustic panels made of rigid material, as was often the case in the prior art. In the exemplary embodiment of Fig. 2, the panels 3 of the damping layer 1 are formed from a nonwoven material. According to the invention, panels 3 or webs made of a nonwoven material, such as polyester-based nonwovens or blends of polyester and cotton in thicknesses of approximately 10 mm to 20 mm, are used.

[0026] The panels 3 can be mounted on the walls 20 or ceilings, as illustrated in Fig. 2, using an adhesive such as a water-based assembly adhesive 5 or a conventional wallpaper paste or similar. A primer 6 can optionally be provided as a further layer between the cover layer 2, shown in exploded form in Fig. 2, and the damping layer 1. With such a primer 6, even more different types of materials can be used for the cover layer 2. The material 2.2 of the cover layer 2 can be the same as that in the joints 4 as the means 2.1 for sealing and acoustically dampening the joints 4. Alternatively, a different acoustically dampening material 2.1 can be used in the joints 4 than the material 2.2 of the cover layer 2, for example, in the form of originally liquid or viscous substances or in the form of strips of acoustic foam or fleece.

[0027] Conventional primers for the application of liquid wallpaper, for example, can be used as a primer. According to the invention, a primer based on natural materials is used, in particular a combination of sand and lime, preferably shell lime. This enables a light color for white walls or ceilings, for example, because the joints and damping layer are prevented from showing through. Nevertheless, the system's water vapor permeability is still ensured.

[0028] As preferred embodiments of the covering system 10 according to the invention, the following materials and compositions are used for the covering layer 2 and the damping layer 1:

[0029] Damping layer 1 (panels 3 or sheets):

[0030] Acoustic foam, especially melamine foam, alternatively fleece or combination of foam / lies

[0031] Thicknesses: 10 mm to 20 mm, preferably 5 mm to 15 mm (thickness measurement for fleece according to DIN EN ISO 29073-2 on a measuring area of ​​10 x 10 cm)

[0032] Density: approx. 8 kg / m 3 (Density of fleece approx. 10 to 30 kg / m 3 ) open-pored, water vapor permeable structure

[0033] Non-rigidity index: Shore hardness 00, preferably 20, especially in a range of 20-40 (Shore 00 measured according to ASTM D 2240)

[0034] Top layer 2: liquid or pasty materials in their original state. Liquid wallpaper based on natural materials, e.g., cotton. Thicknesses: 2 mm to 5 mm. Water vapor permeable, open structure. Non-rigid and flexible even after curing (even after curing or drying).

[0035] Fig. 3 shows a cross-sectional view of another embodiment of a covering system 10 according to the invention. Here, the damping layer 1 is made of several panels 3 made of acoustic foam, for example a melamine foam, which are attached side by side to a wall 20 using an adhesive such as an assembly adhesive 5. In this example, the same material 2.2 of the covering layer 2 is used in the gaps or joints 4 as a means 2.1 for sealing and acoustically dampening the joints 4. After the panels 3 have been attached to the wall 20 using the assembly adhesive 5 or another connecting agent, the covering layer 2 is applied in the form of a liquid wallpaper, for example with a spatula, while simultaneously closing and filling the joints 4 with the material 2.1, 2.2 of the liquid wallpaper, which can be, for example, a cotton-based liquid wallpaper. This Fig. 3 also illustrates any size relationships.The covering layer 2 is approximately 20% or less of the thickness of the damping layer 1. Both layers or plies of the covering system 10, namely the damping layer 1 and the covering layer 2, are formed in this example to be water vapor permeable, meaning that any moisture or condensation can pass through the covering system 10. This effectively prevents the formation of mold or the undesirable accumulation of moisture or condensation on the walls 20 and ceilings.

[0036] Fig. 4 shows a fourth embodiment in a perspective view, in which the damping layer 1 is not formed from individual, separate panels 3, but from longer, adjacent webs. The webs 3 here are made of a nonwoven material, for example polyester or a blend of polyester and cotton, and are delivered in rolls. After cutting, the webs 3 of the damping layer 1 can be easily attached to the wall using conventional mounting adhesive 5 such as wallpaper paste or similar adhesives. The covering layer 2 is then applied over it in the form of liquid wallpaper, simultaneously sealing the joints 4 or the spaces between the individual webs 3 in the damping layer 1. Alternatively, a separate, acoustically effective means 2.1 can also be used to seal the joints 4.After applying top layer 2, a continuous, flat outer surface is created, allowing for effective soundproofing of interior spaces using relatively simple means. By selecting materials for damping layer 1 and top layer 2 with different acoustic properties, the desired level of soundproofing can be precisely adjusted and thus improved.

[0037] According to a further aspect of the invention, the material of the damping layer 1 and / or the material of the covering layer 2 can also have additional thermal insulation properties. This allows thermal insulation or air conditioning of the wall from the inside of the building space in addition to sound absorption with one and the same covering system 10. In addition to the illustrated at least two layers of a damping layer 1 and a covering layer 2, further additional layers or material webs can be provided which serve to support sound absorption, have a further technical or aesthetic function, or are suitable for easier processing. According to an advantageous embodiment of the invention, at least the covering layer 2 of the covering system 1 is flame-retardant or fire-retardant.In particular, a damping layer 1 made of melamine foam can be used to improve and comply with fire protection regulations, such as those required in public buildings. For example, the top layer can be used as a

[0038] Liquid wallpaper can be made flame-retardant by adding additives such as melamine powder or ammonium polyphosphate or similar to the material of top layer 2. This further expands the application areas of the acoustically dampening covering system.

Claims

Claims 1. Covering system (10) for soundproofing walls (20) or ceilings in buildings, comprising a multi-layer composition of at least two layers of different materials, with a damping layer (1) adjacent to the wall (20) or ceiling, made of a plurality of adjacently arranged individual panels (3) or sheets of an acoustic damping material, and with an overlying cover layer (2) covering the panels (3) or sheets, wherein the damping layer (1) and the cover layer (2) are each made of non-rigid materials with sound-absorbing damping properties, and wherein the cover layer (2) has a smaller thickness of 20% or less of the thickness of the damping layer (1), characterized in that acoustically damping means (2.1) are provided for closing joints (4) between the panels (3) or sheets of the damping layer (1) and that the covering layer (2) on the damping layer (1) is provided over an area of ​​the wall (20) or ceiling to be acoustically damped without interruption and across joints (4) for continuous, uniform sound absorption.

2. Covering system (10) according to claim 1, characterized in that the means (2.1) for closing the joints (4) and / or the material (2.2) of the covering layer (2) are formed from a material that can be applied in a liquid or pasty state in the manner of a liquid wallpaper.

3. Covering system (10) according to claim 1 or 2, characterized in that the individual plates (3) or webs of the damping layer (1) are formed from an elastically deformable, open-pore material with sound-absorbing properties, in particular from a nonwoven material, an acoustic foam or a combination thereof.

4. Covering system (10) according to one of the preceding claims, characterized in that the means (2.1) for closing the joints (4) are equally formed by the material (2.2) of the covering layer (2) itself.

5. Covering system (10) according to one of the preceding claims, characterized in that both the damping layer (1) and the covering layer (2) are substantially permeable to water vapor.

6. Covering system (10) according to one of the preceding claims, characterized in that the density of the material (2.2) of the cover layer (2) is higher than the density of the material of the damping layer (1).

7. Covering system (10) according to one of the preceding claims, characterized in that at least the damping layer (1) has a thermal insulation property with a thermal conductivity in particular in the range of at least 0.038 to 0.040 W / mK.

8. Covering system (10) according to one of the preceding claims, characterized in that the panels (3) of the damping layer (1) comprise an acoustic foam, in particular a melamine foam, with a density of < 8 kg / m 3 include.

9. Covering system (10) according to one of claims 1 to 7, characterized in that the plates (3) of the damping layer (1) comprise a fleece with a density of £ 10-30 kg / m 3 include.

10. Covering system (10) according to one of the preceding claims, characterized in that a primer (6) in the form of a further layer, in particular a water vapor-permeable primer, is provided between the damping layer (1) and the covering layer (2).

11. Covering system (10) according to one of the preceding claims, characterized in that the panels (3) or sheets are adapted at least on one side to be attached to walls (20) or ceilings with water-based assembly adhesives (5).

12. Covering system (10) according to one of the preceding claims, characterized in that at least the covering layer (2) consists of a flame-retardant material or is provided with fire-retardant additives, in particular melamine powder or ammonium polyphosphates.

Images