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What's Special About Whisper Acoustic Foam?

So, you’ve compared the sound absorption data and found Whisper to be very competitive in reducing noise, but what makes Whisper the best choice for your acoustic needs?

close up photo of whisper foam

Engineered and Tested Cell Size

ISO specialised testing and fine tuning of cell size for the best possible sound absorption rating across the widest range of frequencies.
Whisper panels hanging from indoor pool ceiling

Water and Moisture Resistant

Whisper® passes the rigorous EN 12088 28-day condensing humidity test. In a simulated ‘one in 50-year storm’ including water at 3 l/min and wind speeds up to 57 kmph, with no need for a water barrier, protective film, or perforated metal facing. Water does not 'stick' to the surface of Whisper foam, instead it beads resisting the water like a well waxed car.
Whisper foam panels just outside of a building under construction

Strong

The closed cell foam structure is quite stiff and can handle impacts such as bumps and impacts in sporting facilities or tight generator rooms.
Whisper foam panels used as a sound blocking wall between train tracks and homes

Accelerated Weathering and UV Resistance

Whisper has been independently tested to exceed 50 years outdoor life in testing to EN 14388. Panels were exposed to UV, heat, water, and road salt. Even when encrusted with salt, Whisper® maintained similar acoustic absorption to the new material.

Fibre Free

In the Danish Society of Indoor Climate’s rigorous particle emissions test Whisper® Acoustic Panels averaged 0.02mg/m2 over the 15 hour period. This is 100 times cleaner than the target for low particle emissions. Compared to other common surfaces, you can understand how clean and free from particles Whisper foam is.

Surface Type

Cleanroom Air
Whisper Foam Panels
Office Desk
Kitchen Counter
New Carpet
Outdoor Air
Industrial Area

Particle Emission Rate

0.01 (mg/m²)
0.02(mg/m²)
0.05 (mg/m²)
0.1 (mg/m²)
0.2 (mg/m²)
0.5 (mg/m²)
1.0 (mg/m²)

Fire Retardant

Important for safety and building regulations, Whisper FR panels achieve: EN 13501 Class B S1 D0 at 20-30mm, EN 13501 Class B S2 D0 at 40-50mm and DIN 4102 Class B1;  Fire testing data is available for rail, mass transit, marine and automotive.

What is Electrolysis and galvanic corrosion?

Galvanic Corrosion is the corrosion that occurs when two dissimilar metals are used together in a structure and exposed to an electrolyte (salt water, chemical, petrol) and the less noble of the 2 metals will corrode. For example; aluminum sheet with steel fasteners on a boat. Some pairings of metals are more at risk of galvanic corrosion. Check a galvanic series or chart.
Electrolysis is the acceleration of the galvanic corrosion when electricity is introduced to the metals in question. Connected by an external electrical source, the less noble metal experiences accelerated galvanic corrosion.
while both processes involve metals and electrolytes, their dependence on an external voltage source distinguishes them.

Downloads

Technical Data Sheet Indoors (Fire Retardant)
Technical Data Sheet Outdoors (UV Resistant)
Whisper Foam Brochure
Photo Book

Learn more

Acoustic Foam and Preventing Noise
Understanding Acoustics - Sound Absorption and Sound Transmission
Acoustic and Sound Absorption Results

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