Acoustic panels are key elements in noise control for sources such as construction activity and generators. A common limitation is moisture sensitivity: many porous absorbers can take up water, which increases mass, reduces absorption efficiency, and can promote mold or material degradation.

Therefore, improving acoustic panels with water-resistant (hydrophobic) properties is critical for reliable performance in humid or wet-exposure environments.

Enhancing Acoustic Panels with Water-Resistant Properties
  1. Mass gain: Moisture uptake increases panel mass, causing sagging, loss of dimensional stability, and reduced mechanical reliability.
  2. Acoustic degradation: Water fills pores and increases flow resistivity, shifting/weakening absorption, especially in mid–high frequencies.
  3. Biological risk: Persistent humidity supports mold/mildew growth, degrading material integrity and indoor air quality.
  4. Drying time & damage: Slow drying traps moisture, leading to staining, delamination, and long-term performance loss.

Solutions

ARKETA acoustic felt (recycled PET) can be specified for moisture-prone areas using a hydrophobic / water-resistant build that limits liquid uptake and helps maintain dimensional stability and acoustic performance.

Hydrophobic behavior: Surface resists wetting, reducing water absorption and weight gain in humid or splash-exposed conditions.

Mold resistance: Lower moisture retention helps reduce mold/mildew risk when paired with proper detailing and ventilation

Applications

  • Bathrooms / changing rooms: Acoustic wall treatments where humidity and intermittent splash exposure are expected (outside direct water jet zones).

  • Poolside / spa areas: Sound control for reverberant hard-surface spaces with high moisture load.

  • Covered outdoor areas: Patios, gazebos, canopies and sheltered façades where panels may face damp air and occasional rain exposure.

Note: For true outdoor use, performance depends on detailing (edges, fixings, drainage, ventilation) and exposure level (UV, wind-driven rain).