Stratocell® Whisper Acoustic Panel
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Stratocell® Whisper Acoustic Panel
High‑performance sound absorption for demanding environments, indoors and out.
The team at Ecoshield specialise in the supply and fit out of Stratocell® Whisper Acoustic Panel systems.
Stratocell® Whisper is a closed‑cell polyethylene acoustic foam panel designed to deliver exceptional sound absorption, durability, and weather resistance in a wide range of applications. Its unique micro‑cellular structure and rugged surface finish make it ideal for both industrial and architectural noise control where conventional fibrous materials may not be suitable.
Key Features
• Excellent sound absorption across mid and high frequencies
• Water‑resistant, rot‑proof, and non‑fibrous – suitable for humid or outdoor environments
• Lightweight and impact‑resistant – easy to handle, cut, and install
• Durable and weatherable – resists moisture, dirt, and many common chemicals
• Low maintenance – non‑dusting, easy to wipe down or hose off
• Versatile formats – sheets / panels cut to size, custom shapes, CNC‑cut profiles
• Thermal insulation benefit – closed‑cell structure also helps reduce heat transfer
• Safe to handle – no airborne fibres, easy to work with on site
Typical Applications
Stratocell Whisper panels are used wherever long‑lasting, cleanable and robust sound absorbers are required:
Industrial & Plant Rooms
- Pump rooms, compressor rooms and plant enclosures
- Generator and HVAC acoustic linings
- Factory walls and ceilings to reduce reverberation
- Machinery guards and acoustic hoods
Benefits:High absorption reduces overall noise levels and reverberation while the closed‑cell construction withstands oil mist, occasional splashes, and mechanical impacts.
Building & Commercial Interiors
- High‑reverberation spaces: atria, lobbies, corridors, workshops
- Service yards, loading bays, underground car parks
- Sports halls, gyms, indoor swimming pools (non‑fibrous, moisture‑resistant)
Benefits: Controls echo and improves speech intelligibility without the dusting, shedding or moisture‑sensitivity of traditional fibrous products.
Outdoor & Environmental Noise Control
- Acoustic barriers and fences along roads, railways and industrial sites
- Internal absorptive lining of perimeter walls and screens
- Rooftop plant and chiller enclosures
Benefits: Weather‑resistant, washable, and robust enough for external use when protected with appropriate facing or perforated cladding.
OEM & Transportation
- Acoustic lining in enclosures, cabinets, vehicles and equipment
- Sound absorption in mobile plant, agricultural and construction machinery
- Generator and compressor set manufacturers
Benefits: Lightweight panels reduce overall equipment weight while providing effective mid–high frequency noise control.
Technical Description
Material
- Base material: Closed‑cell polyethylene foam
- Structure: Micro‑cellular, semi‑rigid, low density
- Surface: Skinned surface on one or both faces (depending on grade) for durability
- Colour: Typically light grey / black (other colours available to order)
Standard Panel Sizes
Typical formats (can be customised):
- Standard sheet:
– 2400 x 1200 mm
– Other sizes on request - Available thicknesses:
– 25 mm & 50 mm (others on request)
Density
- Nominal density:24–30 kg/m³ (depending on grade and thickness)
Acoustic Performance
Stratocell Whisper panels are highly absorptive in the mid to high frequency range. The following data are typical sound absorption coefficients (αs) measured according to ISO 354 / ISO 11654 in a reverberation room. Values will vary slightly with installation method and air gap.
25 mm Panel (Direct Fix)
Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC / αw
Absorption (αs) | 0.15 | 0.30 | 0.65 | 0.85 | 0.95 | 1.00 | NRC ≈ 0.75, αw ≈ 0.75 (L)
50 mm Panel (Direct Fix)
Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC / αw
Absorption (αs) | 0.30 | 0.65 | 0.90 | 1.00 | 1.00 | 1.00 | NRC ≈ 0.95, αw ≈ 1.00
50 mm Panel with 50 mm Air Gap
Adding an air cavity behind the panel improves low‑frequency absorption:
Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC / αw
Absorption (αs) | 0.45 | 0.85 | 1.00 | 1.00 | 1.00 | 1.00 | NRC ≈ 1.00, αw ≈ 1.00
Note: These are representative figures for Stratocell® Whisper‑type PE acoustic foam. Always refer to the latest official test report or product datasheet for certified values.
Where Stratocell Whisper Excels
- Absorption without fibres – e.g. food & beverage plants, clean manufacturing, public spaces
- Resilience to moisture and wash‑down – car parks, plant rooms, process areas
- Durability and impact resistance – sports facilities, workshops, loading docks
- Low weight & easy handling – retrofit projects, OEM equipment, transport applications
It is particularly effective in
- Reducing reverberation time (T60) in hard‑surfaced rooms
- Improving speech clarity in noisy environments
- Cutting reflected noise from hard boundaries (walls, ceilings, barriers)
- Enhancing the performance of acoustic screens and enclosures by adding internal absorption
Summary
Stratocell® Whisper acoustic panels combine robust closed‑cell polyethylene technology with excellent sound absorption, delivering a long‑lasting, cleanable and versatile solution for both indoor and outdoor noise control. Whether you’re reducing reverberation in a factory, lining an
Our team service nationwide and strive to delivery high quality products in a timely fashion, we are passionate about delivering anything you bring to the table no matter how big or small.