Publish Time: 2026-07-28 Origin: Site
An acoustic wall covering must do more than complement an interior color scheme. Its material, thickness, surface openness, mounting method, and position determine how effectively it reduces reflections and controls reverberation. The wrong selection may look attractive but provide limited improvement at the frequencies causing the problem. Understanding the differences among PET felt, fabric-wrapped absorbers, wood wool cement boards, mineral fibers, fiberglass, foam, and natural materials makes it easier to balance acoustic performance, durability, maintenance, safety, installation, and design requirements.
Most acoustic wall covering materials work by allowing sound waves to enter a porous or fibrous structure. Friction within that structure converts part of the sound energy into a very small amount of heat, reducing the energy reflected toward occupants and other hard surfaces. This process helps shorten reverberation and can improve speech clarity in offices, classrooms, restaurants, conference rooms, and other reflective interiors. It does not automatically prevent voices, machinery, or music from passing through a wall, because sound absorption and sound isolation address different problems.
Material identity is only one part of performance. Thickness, density, airflow resistance, surface treatment, backing, panel dimensions, installation coverage, and the air space behind the material can all influence absorption. Thin products generally contribute most at middle and higher frequencies, while thicker assemblies or panels installed with an air cavity can offer more useful control over lower frequencies. A dense paint film, sealed vinyl face, or other nonporous finish may restrict sound from reaching an absorptive core. The complete acoustic wall covering assembly should therefore be evaluated rather than judging performance from the visible material alone.
Noise Reduction Coefficient, commonly abbreviated as NRC, provides a convenient single-number indication of sound absorption, but it should not be treated as a complete description. Frequency-specific absorption data can reveal differences that a single rating may hide. This distinction matters when a room has a defined problem such as low-pitched mechanical noise, amplified music, or strong speech-frequency reverberation. Buyers should compare products under similar test and mounting conditions before using NRC values to make a final decision.
PET felt is formed from polyester fibers that are compressed and bonded into a self-supporting porous sheet. It can function as both the visible decorative surface and the sound-absorbing material, removing the need for a separate fabric face in many applications. The material can be cut into tiles, full sheets, geometric shapes, routed patterns, grooves, or layered relief designs. Its light weight and finished edges make it practical for offices, education spaces, meeting rooms, corridors, display areas, and feature walls where design flexibility is important.
ColorBo PET Acoustic Felt is made from polyester fiber with 50% recycled content. The panel measures 2440 × 1220 mm, has a thickness of 9 mm, and has an NRC range of 0.45–0.75. These characteristics support lightweight decorative wall treatments with multiple color possibilities. For spaces requiring stronger absorption, designers should also consider total surface coverage, mounting details, additional material depth, and the potential use of an air cavity behind the acoustic wall covering.
A fabric-wrapped acoustic wall covering combines a porous core with an acoustically open decorative facing. Depending on the system, the core may be PET fiber, fiberglass, mineral wool, foam, or another absorptive material. The fabric conceals the core, protects its surface, and gives designers access to different colors, textures, edge profiles, prints, and panel arrangements. Because the core and facing can be selected separately, this construction is adaptable to meeting rooms, theaters, studios, hospitality interiors, executive offices, schools, and multipurpose spaces.
The ColorBo Fabric Wrapped Panel uses a PET acoustic core and is available in 9, 12, and 25 mm thicknesses. The panel size is 2400 × 1200 mm, and its NRC range is 0.45–0.75. These thickness options allow the assembly depth to be adjusted for different design and acoustic requirements. The selected facing should remain sufficiently permeable, while cleaning methods, stain exposure, fabric tension, and the risk of impact damage should be considered in busy environments.
Wood wool cement panels combine long wood fibers with cement and water to create a rigid board with an open, textured surface. Sound can enter the spaces around the fibers, while the bonded structure provides a harder architectural finish than soft felt or exposed fabric. The distinctive texture suits industrial, educational, cultural, retail, hospitality, and public interiors where the acoustic wall covering is intended to remain visible. Boards may use natural tones, colored finishes, grooves, or decorative surface patterns to support different interior concepts.
The ColorBo Wood Wool Cement Panel is made from wood wool, cement, and water. It has a thickness of 25 mm and uses a grooved surface that combines acoustic material with visible architectural geometry. Compared with lightweight felt, this type of acoustic wall covering requires greater attention to panel weight, cutting methods, substrate strength, edge detailing, joint planning, and mechanical attachment. Its rigid construction can be useful where softer wall finishes would be exposed to frequent contact.
Fiberglass and mineral wool are widely used as concealed acoustic cores because their interconnected fibers create an effective path for sound energy to enter and dissipate. They are commonly installed inside frames and covered with breathable fabric, perforated facings, or other protective finishes. Core density should not be considered in isolation. Excessive density may reduce airflow, while insufficient rigidity may make fabrication, edge finishing, and installation more difficult. Handling requirements, fiber containment, facing compatibility, and edge protection should therefore be reviewed as part of the complete assembly.
Open-cell acoustic foam is another porous option, particularly for shaped tiles, wedges, and lightweight treatments. It can be useful for controlling middle- and high-frequency reflections, but the chosen foam should be intended and tested for architectural acoustic use. Packaging foam and upholstery foam should not be treated as interchangeable alternatives. Natural wool, hemp, cellulose, cork, and plant-fiber composites can also be incorporated into an acoustic wall covering. Their acoustic performance, moisture response, emissions, durability, fire behavior, dimensional stability, and cleaning requirements vary considerably.
No single material is automatically suitable for every project. A decorative office wall may prioritize low weight, color consistency, and easy cutting, while a school corridor may require greater impact resistance and simpler cleaning. A studio may need thicker broadband absorption, whereas a restaurant may obtain an adequate improvement through wider coverage of thinner decorative panels. Comparing materials according to the way the room will actually be used helps prevent appearance, maintenance, and performance requirements from conflicting after installation.
Material | Main Strengths | Points to Check | Typical Applications |
|---|---|---|---|
PET felt | Lightweight, self-finished, easy to shape, and available in varied colors | Thickness, edge finish, surface damage, and lower-frequency performance | Offices, classrooms, meeting rooms, and feature walls |
Fabric-wrapped core | Flexible appearance, concealed core, and multiple thickness options | Fabric permeability, stains, impact exposure, and replaceability | Conference rooms, studios, theaters, and hospitality interiors |
Wood wool cement | Rigid textured finish, architectural appearance, and a harder surface | Weight, cutting, joints, substrate condition, and fixing method | Schools, public interiors, restaurants, and cultural spaces |
Fiberglass or mineral wool | Effective porous core and suitability for thicker acoustic assemblies | Facing, containment, edge protection, and installation handling | Studios, auditoriums, meeting rooms, and performance spaces |
Acoustic foam | Low weight and the ability to form sculpted surface profiles | Fire documentation, durability, cleaning, and visual suitability | Controlled technical, media, and creative spaces |
This comparison should be used as a screening tool rather than a final specification. Products within the same material category can perform differently because thickness, fiber structure, binder type, surface facing, backing, mounting condition, and test method may not be identical. An appearance sample can help confirm color, texture, and tactile quality, but it cannot demonstrate acoustic performance. Test documentation should cover the exact acoustic wall covering configuration and should be reviewed alongside the proposed installation method.
Begin with the acoustic problem rather than the material name. In an open office, the main objective may be reducing reflected speech and general noise buildup, so PET felt or fabric-faced panels can be distributed near conversation zones and large hard wall areas. Classrooms require clear speech and controlled reverberation, making coverage, panel position, and coordination with ceiling absorption especially important. Where an exposed ceiling removes a major absorptive surface, additional treatment may be needed on walls, partitions, suspended elements, or other room surfaces.
Restaurants, hotel lobbies, and multipurpose venues add maintenance and visual demands. A soft textile finish may suit areas beyond direct contact, while rigid wood wool cement can be more practical where the wall is exposed to frequent traffic. Recording rooms and media spaces usually require attention across several frequency bands, so thicker fabric-wrapped assemblies or combined wall and ceiling treatments may be more appropriate than thin decorative tiles alone. An acoustic wall covering should also be positioned where significant reflections occur rather than being limited to a small area selected only for visual convenience.
Healthcare, education, and public buildings may place greater emphasis on cleaning, emissions, fire requirements, and resistance to damage. PET felt can simplify decorative patterning, but seams, exposed edges, adhesives, and contact areas still require careful detailing. Fabric provides visual softness but must be assessed against cleaning procedures and contamination risks. Wood wool cement provides a harder, textured surface, although its porosity may not suit every hygiene-sensitive area. The operating conditions of the room should guide the final material choice.
Request test information for the exact acoustic wall covering rather than accepting a general performance claim for the material family. Confirm the test method, specimen thickness, mounting condition, air cavity, facing, backing, and tested surface area. Compare frequency-specific absorption data when the room has a defined acoustic target, and verify that the intended installation resembles the tested configuration. A strong rating achieved with a deep air space should not be assumed for the same panel when it is bonded directly to a solid wall.
Fire classification must correspond to the project location, occupancy type, and applicable building requirements. Ratings from different test systems are not automatically interchangeable, and the result for a core material may not represent an assembly that includes fabric, adhesive, coating, backing, or framing. Documentation should cover the supplied configuration rather than only one component. General-purpose foam should not replace an architectural acoustic material without suitable evidence of its fire behavior, emissions, durability, and intended use.
Installation and lifecycle conditions also affect the final result. Confirm substrate flatness, panel weight, adhesive compatibility, fixing visibility, joint layout, cutting methods, access requirements, and the possibility of replacing damaged sections. Review resistance to humidity, sunlight, stains, impact, dust, and routine cleaning according to the actual environment. Color samples should be examined under the project lighting, while production samples can reveal edge quality, texture, fabric tension, surface consistency, and differences between material batches.
Material selection should begin with the room’s acoustic problem, followed by absorption data, thickness, mounting, fire requirements, durability, cleaning, and design intent. PET felt, fabric-wrapped absorbers, and wood wool cement each provide a different balance of appearance and function. Shanghai ColorBo Industrial Development Co., Ltd. is an acoustic material manufacturer and supplier offering products across these categories. Its material range can support acoustic wall covering specifications that align panel construction with room use, installation conditions, maintenance demands, and the desired interior character.
A: PET felt, fabric-wrapped fibrous panels, fiberglass, mineral wool, wood wool cement, and acoustic foam are common options. Selection depends on performance, appearance, maintenance, safety, and installation.
A: It primarily reduces reflections and reverberation inside the room. Preventing sound transmission usually requires sealed and isolated wall, floor, ceiling, door, and glazing assemblies.
A: PET felt can suit offices and classrooms because it is lightweight, decorative, and easy to shape. Required thickness, coverage, fire documentation, and placement should still be verified.
A: Neither is universally better. Fabric-wrapped panels offer flexible finishes and concealed cores, while wood wool panels provide a rigid, textured surface for more exposed locations.
A: Request frequency-specific absorption results, the single-number rating, test standard, specimen thickness, mounting method, air gap, facing, backing, and confirmation of the tested product configuration.