Overview
When addressing reverberation and echo in interior spaces, architects and contractors frequently choose between two popular solutions: PET (Polyethylene Terephthalate) acoustic panels and MDF (Medium Density Fiberboard) wooden slatted acoustic panels. Understanding their differences is key to specifying the right product for a project.
Material Composition
PET acoustic panels are made from 100% polyester fiber, often recycled from plastic bottles, compressed into a dense felt-like board. MDF acoustic panels are composite structures featuring a surface layer of MDF slats (often finished with wood veneer or melamine) attached to a backing layer of acoustic felt. Sound absorption occurs as sound waves pass through the gaps between the MDF slats and are trapped by the felt backing.
Aesthetic Differences
PET panels offer a soft, fabric-like appearance available in a wide spectrum of solid colors. They can be easily cut into custom shapes or geometric patterns. MDF panels provide a premium, architectural look with wooden slats that introduce warmth, texture, and linear elegance — ideal for sophisticated boardrooms, luxury homes, or high-end hospitality settings.
Acoustic Performance
Both systems are highly effective at absorbing mid-to-high frequency sounds. PET panels rely on broadband absorption across their entire surface area, with thicker panels (24mm) offering excellent NRC ratings. MDF panels function as a combination of resonator and absorber — the slats reflect some low-frequency sound while the gaps allow mid-to-high frequencies to be absorbed, creating a more natural acoustic environment.
Durability and Maintenance
PET panels can be susceptible to surface pilling or holding dust over time, making them best suited for upper wall areas or ceilings. MDF panels feature a hard, wipeable surface that is much more durable and impact-resistant, suitable for high-traffic areas or anywhere panels might be touched frequently.
Which to Choose
Choose PET panels for budget-conscious projects, colorful creative designs, or ceiling baffles. Choose MDF slatted acoustic panels when the project demands a high-end architectural wood finish combined with robust acoustic control and physical durability.