The selection of an appropriate floor covering is a critical decision in any construction or renovation project. It involves balancing aesthetic preferences with technical performance, safety requirements, and environmental standards. While the visual appearance of a floor is immediately apparent, its essential properties are often communicated through a standardized system of symbols and pictograms. These small graphics, found on packaging and technical datasheets, contain a wealth of information regarding the floor's durability, safety, and suitability for specific environments.
This article provides a detailed analysis of the symbols used for floor coverings, based exclusively on the provided source materials. It is designed for homeowners, DIY enthusiasts, and construction professionals seeking to make informed decisions based on technical data. Understanding these symbols is not merely an academic exercise; it is essential for ensuring that a floor covering performs as expected, meets regulatory requirements, and provides a safe and comfortable environment for its intended lifespan.
The Function and Importance of Pictograms
Wichtige Zusatz-Eigenschaften von Bodenbelägen werden anhand von einfachen Symbolen dargestellt. Diese geben wichtige Informationen über Eigenschaften wie Brandverhalten, Rutschfestigkeit, Nutzungsstärke, Dimensionen etc. des jeweiligen Bodenbelages [1]. These symbols serve as a universal language in the construction industry, allowing for a quick and reliable comparison of different products. It is important to note that while the symbols themselves are standardized, their exact graphical representation may vary slightly between manufacturers or testing institutes. However, their fundamental meaning remains consistent [2].
The primary categories of information conveyed by these symbols include: * Usage Classes: Indicating the expected traffic intensity. * Safety Properties: Covering slip resistance and electrical characteristics. * Acoustic Performance: Describing sound absorption and impact noise reduction. * Fire Behavior: Classifying the material's reaction to fire. * Environmental and Quality Labels: Certifying sustainability and material integrity.
Usage Classes: Matching the Floor to the Environment
One of the most critical aspects of selecting a floor covering is ensuring it can withstand the anticipated level of foot traffic. This is communicated through usage classes, which are categorized for both residential and commercial/industrial applications.
Residential Usage Classes
For private households, the classification system distinguishes between four levels of use, as outlined in the provided data [3]: * Class 21 (leicht / geringer oder zeitweiser Nutzung): Suitable for areas with light or occasional use, such as bedrooms or guest rooms. * Class 22 (mäßig / mittlerer Nutzung): Designed for areas with moderate use, like living rooms and dining rooms. * Class 22+ (mäßig / normal bis intensiver Nutzung): A slightly higher class for areas that experience moderate to intensive use. * Class 23 (stark / intensive Nutzung): For areas with heavy use, such as hallways, kitchens, and staircases.
Commercial and Industrial Usage Classes
In non-residential settings, the requirements are more demanding. The classification system expands to cover public and industrial spaces [3]:
Commercial Areas (Öffentliche Bereiche): * Class 31 (leicht / geringer oder zeitweiser Nutzung): For areas with light commercial traffic, such as small offices or hotel rooms. * Class 32 (normal / mittlerem Publikumsverkehr): For areas with moderate public traffic, like offices, boutiques, and hotels. * Class 33 (stark / starkem Publikumsverkehr): For areas with heavy public traffic, such as department stores, public buildings, and restaurants. * Class 34 (intensiv / intensiven Publikumsverkehr): For areas with very intensive public traffic, like airports, shopping malls, and concert halls.
Industrial Areas (Industriebereiche): * Class 41 (leicht / leicht beanspruchte industrielle Bereiche): For lightly used industrial areas, such as assembly rooms. * Class 42 (normal / mittel beanspruchte industrielle Bereiche): For areas with moderate industrial use. * Class 43 (stark / stark beanspruchte industrielle Bereiche): For areas with heavy industrial use, such as production halls and warehouses.
Furthermore, for high-end applications like luxury vinyl tiles (LVT), a separate classification known as Luxusklasse (LC) is used. The provided data references LC1, indicating a system for differentiating quality within high-performance flooring categories [3].
Safety Properties: Slip Resistance and Electrical Behavior
Safety is a paramount concern in floor design. Symbols provide clear information on two key safety aspects: slip resistance and electrical properties.
Slip Resistance (Rutschfestigkeit)
Slip resistance is a critical factor, particularly in areas prone to moisture or where a high risk of slipping exists. The provided data outlines a classification system based on the R-scale, which measures the slip resistance on a sloping surface [4]: * R9: A low coefficient of friction, recommended for normal private applications. It is considered safe up to a slope angle of 3° to 10°. * R10: A normal coefficient of friction, suitable for areas up to a slope of 10° to 19°. This class is recommended for "barrier-free" designs. * R11: An increased coefficient of friction, providing safety on slopes up to 19° to 27°. * R12: A high coefficient of friction for slopes between 27° and 35°. * R13: A very high coefficient of friction for slopes exceeding 35°.
In addition to the R-scale, the symbol DS (DIN 51130) is used to indicate that a floor meets a specific slip resistance requirement for commercial applications, where the dynamic friction coefficient under dry and clean conditions must be 0.30 or greater. If a product does not meet this declared performance, the symbol NPD (No Performance Declared) is used [2]. Another test method, ES, is also mentioned, which uses a different testing procedure (FBR/leather slider with lubricant) according to EN 13845 [2].
Electrical Properties
For specialized environments like computer rooms, hospitals, or areas with sensitive electronic equipment, the electrical properties of a floor covering are crucial. The provided sources describe three distinct characteristics [2, 4]: * Antistatik (Antistatic): This symbol indicates that the flooring has been treated to prevent the build-up of static electricity. To carry this symbol, the body voltage measured after walking on the carpet must be less than 2kV. It is suitable for office areas with computer systems [2, 4]. * Elektrisch ableitbar (Electrically Dissipative): This symbol is used for flooring that can dissipate electrical charges in a controlled manner. This is a higher performance requirement than "antistatic" and is essential in areas like computer rooms [2, 4]. * Elektrisch leitfähig (Electrically Conductive): This symbol indicates that the flooring provides a direct path for electrical charges to ground. This is the highest level of electrical performance, required in highly sensitive environments [2].
Acoustic Properties: Sound Absorption and Impact Noise
In modern buildings, particularly multi-family dwellings and office environments, acoustic performance is a key consideration for comfort. The provided data identifies two types of acoustic properties communicated through symbols [2]: * Schallabsorption (Sound Absorption): This symbol indicates that the floor covering has sound-absorbing properties, which can reduce reverberation within a room. It is used when the sound absorption coefficient has been determined according to EN ISO 354. * Trittschall (Impact Sound): This symbol indicates that the floor covering helps to reduce the transmission of impact noise to the floor below. It is used when the impact sound improvement value has been measured according to EN ISO 140-6.
The data also mentions "Trommelgeräusche" (drumming noises), but notes that the same standard (EN ISO 354) is referenced for this as for general sound absorption, suggesting a potential ambiguity in the provided text [2].
Fire Behavior: Brandverhalten
The reaction of a building material to fire is a critical safety aspect governed by strict regulations. The provided data focuses on the European classification system for floor coverings, particularly carpets, as defined in EN 13501-1 [2].
The classification is composed of letters and numbers: * Classes (A, B, C, D, E, F): These letters indicate the level of contribution to a fire. Class A is the highest performance (non-combustible), while Class F indicates untested or insufficient performance. * Subclasses (s1, s2): These numbers relate to smoke production. s1 indicates low smoke density, while s2 indicates higher smoke density. Within the same fire class (e.g., B or C), a product classified as s1 performs better than one classified as s2.
The provided sources mention specific classes such as B-S1, B-S2, C-S1, C-S2, D-S1, D-S2, E-S1, and E-S2 [3]. The data also references the older national classifications, noting that the new EU classes are replacing them [2]. It is important to note that the sources state Class A is not relevant for carpet flooring, which is a specific application detail [2].
Environmental and Quality Labels
Beyond performance and safety, the origin of materials and the environmental impact of production are increasingly important. The provided data highlights several key labels and quality markers.
Environmental Certifications
- Europäisches Umweltzeichen (EU Ecolabel): Established in 1992 by the European Union, this label identifies products and services with lower environmental impacts compared to similar ones. This includes factors like energy consumption during manufacturing, the use of health- or environment-endangering substances, and waste generation [2].
- Miljömärkt – der weisse Schwan (Nordic Swan): This is the Nordic environmental label, established in 1989 by the Nordic Council of Ministers. It follows a holistic approach to setting criteria for products and services, similar to the EU Ecolabel [2].
Material and Performance Quality
- Wools of New Zealand: This is a specific quality mark for products containing at least 60% New Zealand wool. To carry this label, products must also meet high-performance and environmental protection requirements [2].
- Schnittkantenfestigkeit (Cut Edge Durability): Represented by a symbol with scissors, this indicates that the cut edges and seams of a carpet tile or rug will not fray. This is particularly important for loop-pile carpets [3].
Fazit
The symbols on floor coverings are a condensed yet comprehensive source of technical information, essential for making qualified decisions in construction and renovation. They provide a clear and standardized method for comparing products based on critical criteria such as usage intensity, safety, acoustics, fire behavior, and environmental impact. For the homeowner, these symbols ensure that a chosen floor is suitable for its intended room and will perform safely over time. For the professional, they provide the necessary data to specify products that meet project requirements and regulatory standards. A thorough understanding of this symbolic language is therefore indispensable for achieving successful, durable, and safe flooring installations.