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DEKOZELL® SYSTEMS

DEKOZELL® SYSTEM ROBUST

Application instructions
Technical data sheet
Text for invitation to tender

Acoustic panels for walls as sound absorbers

Almost indestructible. For heavy-duty use.

  • Impact-resistant, flying-ball-proof & feng shui
    • The impact resistance of the DEKOZELL ROBUST panel is truly wow. Pure sintered expanded glass granulate, made from 100% recycled used glass bottles.
    • ogether with our velvety-smooth, white acoustic coating, it’s also just the thing for feng shui fans.
    • Correctly laid using the direct bonding method and with our extremely robust textile plaster as a textured final coating, it even creates a ball-proof acoustic plaster system. And then come what may. No other acoustic plaster system in the world can do this.
  • For ceilings and walls
    • DEKOZELL ROBUST is ideal for the acoustic use of walls subject to heavy public traffic.
    • And if something does happen: The surface can be repaired and renovated an almost unlimited number of times. Or you can build it as a ball-proof acoustic plaster system with our extremely robust textile plaster.
  • Even suitable for weathered outdoor areas
    • An acoustic panel for outdoor use, even in the event of driving rain – only the ROBUST acoustic panel can withstand this.
    • But only naked, uncoated, with visible V-joints. The ROBUST panel doesn’t care about rain, but our acoustic plasters, which are reversible with water, prefer to be indoor plasters.
  • Suitable for swimming pools
    • They can also be used in swimming pools with active dehumidification. The acoustic panel itself is even suitable for outdoor use.
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Acoustic Calculator

1. Types of utilisation

DIN 18041 (audibility in small and medium-sized rooms) distinguishes between different types of room utilisation. When a room is used for making music, a certain amount of reverberation is desirable so that the room “carries” the sounds. If the room is used for speech, two people can have a reasonable conversation, but if there are many children in the room, the individual sound pressure levels quickly add up again. If a room is used for normal school lessons or as a kindergarten room, the requirements for the amount of sound absorber capacity to be installed are correspondingly higher. However, a compromise often has to be found between the reverberation time to be achieved and the actual structural possibilities.
We would be happy to advise you on this for your specific project, including solutions from other manufacturers.

Overview of the categorisation of types of use

Music

  • Music classroom with active music-making and singing;
  • Council and banqueting hall for musical performances.

Speech

  • Courtroom and council chamber
  • Community hall, meeting room
  • Music rehearsal room in music schools or similar
  • Sports hall and swimming pool with an audience

Lessons

  • Classroom (except for music);
  • Music classroom with audiovisual presentation
  • Group rooms in kindergartens and day care centres, day care centres for the elderly
  • Seminar room, interaction room
  • Lecture theatre
  • Room for tele-teaching
  • Meeting room, conference room
  • Performance room for electro-acoustic use only

Sport 1

  • Sports halls and swimming pools without an audience for normal use and/or single class operation (one class or sports group, standardised communication content)

Sport 2

  • Sports halls and swimming pools without an audience for multiple classes
2. acoustically open window A o.F.

In order to reduce the reverberation time in a room to a certain value, a corresponding amount of so-called “acoustically open window” must be installed. This is an arithmetical auxiliary value that is specified in virtual square metres. A large window front that can be opened completely is an almost sound-reflecting surface when closed. When open, however, precisely this window surface forms an “acoustically open window” from an acoustic point of view – even with an efficiency (sound absorption coefficient) of 100%! In order to reduce the reverberation time in the room to an appropriate level, a corresponding amount of “acoustically open window” must also be installed in the room – strategically distributed throughout the room. The calculation value for the acoustically open window results from the sum of all sound-absorbing surfaces in the room, which have previously been multiplied by their respective sound absorption coefficient. We would be happy to advise you on this for your specific project, including solutions from other manufacturers.

3. Reverberation time T N-set

The reverberation time is the measurement by which you can judge the “reverberation” of a room. If a loud bang is produced in a room (e.g. by clapping your hands vigorously), you can almost count how long it takes for the reverberation to subside if the reverberation time is longer than 1.5 seconds. The eardrum in the human ear has a moment of inertia of approximately 0.7 seconds. Accordingly, reverberation times of more than 0.7 seconds are usually perceived as quite reverberant, while reverberation times of less than 0.7 seconds are much more pleasant. However, the actual target reverberation time for a room depends on its volume and the planned type of use for the room. Please use the acoustics calculator above. We would be happy to advise you on this for your specific property, including solutions from other manufacturers.

Professionally, the reverberation time is determined using appropriate sound pressure level measuring devices that measure the decay of the reverberation in the room. In simpler cases, the sound pressure level required for the measurement is generated by a shot from a shotgun or the bang of a starter flap, such as is used in a 100m race. In professional measurements, which also measure individual frequencies individually, special loudspeakers are set up in the room (so-called dodecahedrons), through which the room is filled with special noise. The decay time of the sound pressure level generated by the noise in the room is then measured. Should such a measurement be necessary, we will be happy to help you find a professional room acoustician.

Acoustic calculator

Type of use. Room volume. Reverberation time. Acoustically open window. Calculate target values.

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Quantity Calculator

Product quantity calculator

Calculate the approximate amount of product you need for your project.

An investment that pays off

Robust through and through. Renovable all around.

DEKOZELL ROBUST panels are a very expensive acoustic building material due to their energy-intensive production from recycled glass and the subsequent sintering process. However, it is one of the very few acoustic panels on the market that is a purely mineral building material in fire class A1. And free from mineral fibres, very easy to cut or saw.

By applying DEKOZELL acoustic spray filler, one of the smoothest acoustic plaster surfaces available on the market can be achieved. Even with grazing light, absolutely wave-free, very smooth or textured acoustic plaster surfaces are possible.

Higher absorber performance

With 5 cm thick panel made of sintered expanded glass granulate. The expanded glass granulate panels are a handy 625x625x50mm in size and are bonded directly to the substrate using a special mineral adhesive, similar to tiles.

Absolutely waveless

During final sanding, trowel marks and unevenness are automatically sanded away. This results in one of the smoothest surfaces on the market, which is almost impossible to achieve with other acoustic plasters.

Also for curved walls

If the panel is cut into strips, the DEKOZELL ROBUST acoustic panel can even be used to acoustically cover curved walls without joints and in a continuous pattern.

Let us convince you
and inspire you.

DEKOZELL Kontakt

Let us advise you

Talk to our Dekozell specialists. We “only” make seamless acoustic plaster systems, but we do it uniquely well and with enthusiasm. And we go the extra mile for you to find the best solution for your project.

Request a consultation

Request a free sample

Only your professional judgement decides. So request your product sample from us and take the Dekozell quality check into your own hands. We will ensure that you receive your sample as quickly as possible.

Order a sample

„As experts for good sound in a room, a pleasant, natural acoustic atmosphere is essential for us. We advise our customers holistically, with the most suitable absorber solutions for the room and customer. Whether using our invisible loudspeakers SONUS INTARA, which can also be easily accessed again, or the impressive 5,000 square meters of wall and ceiling in the Kunst-Museum Reinhardt Ernst. If you want seamless invisibility, we can warmly recommend DEKOZELL.“

Joachim Kistner, Managing Director
SONUS Acoustic Solutions, Baden-Baden
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Zusammenarbeit:0,0
Kreativität:0,0
Ergebnis:0,0

„We develop tools for creative people to optimize spaces such as recording studio control rooms, recording rooms or concert halls. In 2012, we were looking for a seamless acoustic plaster solution for the redesign of control room 7 at ORF Vienna. All of the competing systems could not be repaired and the trickling onto the expensive sound technology was also unacceptable. With DEKOZELL, we have had a capable acoustic plaster partner ever since.“

Peter Willensdorfer, Managing Director
tonarchitektur Willensdorfer, Vienna
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Zusammenarbeit:0,0
Kreativität:0,0
Ergebnis:0,0

„We build atmosphere for our discerning customers. Mainly for high-quality residential buildings. We strive for an aesthetic that emphasizes simplicity. Rough and sensitive acoustic plaster ceilings have always caused us problems. DEKOZELL, on the other hand, is simple, beautiful and smooth. And gives us a new freedom in design.“

Georg Weber, Architect
Hillekamp & Weber Architecture Studio, Mönchengladbach
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„We have already worked with almost all acoustic plaster manufacturers. DEKOZELL was a game changer for us. Absolutely invisible repairs and the very special feel of the surface convinced us completely. Today, we have more than 30 people working on the acoustic spray filler and use several spraying machines.“

Jörg Held, Managing Director
Steuernagel & Lampert, Painting company, Groß-Bieberau
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Kreativität:0,0
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„Acoustic plaster is a top priority for me. Because DEKOZELL acoustic plaster systems are usually included in the painting tender, I have already received several villa projects as a complete order. Sanding really does the trick. Difficult installation situations or quick repairs are no problem. I also really like the DEKOZELL sealant for the edge connection, which looks exactly right.“

Peter Rumohr, Master Painter
Malerwerkstätte Rumohr, Krefeld
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„We create color concepts and develop extraordinary surfaces with sensitivity and aesthetics surfaces that emphasize uniqueness. Room acoustics are a central theme here. In DEKOZELL, we have found a partner with whom we can meet the high demands of our customers.“

Harald Jehle, Master of Colors
polychrom Jehle, Weingarten
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„We have been processing DEKOZELL for many years now. As a two-man business, we can therefore get involved in what is an extremely interesting and lucrative market for us.“

Hermann Kilgus, Master Painter
Kilgus Painting and Varnishing company, Leutkirch
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„I was highly skeptical at the beginning. Our customer wanted FLEXOPANEL on the ceiling and on a large wall. We’d never done that before. Through WhatsApp video calls and top work instructions, we grew into it step by step. We are delighted with the result. And so was the customer.“

Enes Zhegerova, Fabricator
Dietrich Plasterer & Color Design, Wüstenrot
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Kreativität:0,0
Ergebnis:0,0

DEKOZELL® Acoustic plaster systems

The right system for every project.

The well thought-out variety of our systems enables perfect room acoustics to be seamlessly integrated into all conceivable buildings, halls and rooms. Configure your DEKOZELL acoustic plaster system according to your requirements. If you do not know exactly which system is suitable, we will be happy to help you.

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DEKOZELL® System Distance Easy

DEKOZELL® System

Distance-Easy

No hole marking, super easy installation, very good acoustics, with ceiling cavity. Simply more beautiful and discreet hanging.

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DEKOZELL® System Flexopanel

DEKOZELL® System

Flexopanel

Our best-selling system: very flat, light as a feather, uniquely sound absorbing. Simply wallpaper walls and ceilings, even in swimming pools.

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DEKOZELL® System GK

DEKOZELL® System

Heating & Cooling Ceiling

Turn any GK perforated panel into a seamlessly smooth heating/cooling acoustic ceiling. Even Flying-ball-proof for sports and multi-purpose halls.

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DEKOZELL® System Robust

DEKOZELL® System

Robust

Flying-ball-proof, even for walls: maximum impact resistance, installation depth of up to 5 cm for spotlights and cables, suitable for swimming pools and weathered outdoor areas.

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DEKOZELL® System Maxiswing

DEKOZELL® System

Maxi-Swing

Anyone who likes mineral wool will get their money’s worth here. The all-rounder for heat and sound insulation. Up to 5 cm installation depth for spotlights and cables, not suitable for swimming pools or external walls.

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DEKOZELL® System Moderat

DEKOZELL® System

Moderat

Prime, spray on, done. Inexpensive, possible on very uneven substrates. For revitalised rough surfaces, popular in brutalist architecture such as the industrial look or on unplastered concrete.

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