WHIS®wall​

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The WHIS®wall is a low-height noise barrier that uses diffraction to significantly reduce traffic noise. At only about 1 meter high, it offers an effective alternative to traditional 3-meter-high walls, making it ideal for locations where visibility, aesthetics, or spatial limitations are a concern. The WHIS®wall is easy to install, Cost effective, and requires minimal maintenance. Its discreet design integrates seamlessly into both urban and rural environments, while delivering high acoustic performance.

What is WHIS®wall?

The WHIS®wall is a low, innovative noise barrier developed by 4Silence that deflects sound instead of blocking it. Unlike traditional barriers that are often 3 meters high, this is only about 1 meter tall. Thanks to its smart acoustic design, it effectively reduces noise from road and rail traffic while maintaining open views and a minimal visual footprint. The compact design allows for faster installation, lower material use, and seamless integration into both urban and rural environments.

The advantages

Easy to install

Only requires a flat surface.

Cost effective

Less materials and lighter construction.

High noise reduction

Achieves reductions of 7 to 9 dB.

Preservation of the view

the view for both the surroundings and the driver is preserved.

Technical specifications

Diffracting section:

  • Corten steel

  • Aluminium

  • Galvanized

  • Coated

Base structure:

  • Absorbing concrete

  • Reflective concrete

  • Gabion

  • Brick slips

  • Green appearance / Vegetated look

Standard dimensions: 2980 x 1020 x 1020 mm

Reduction: 7 -9 dB

  • To be mounted using special clamps

  • The WHIS®wall only requires a flat, load-bearing surface

  • Production capacity: up to 300 meters per day

  • Maintenance: only once every two years

Adiff tabel
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areas of application

Connecting roads

Provincial roads

Access roads

Highways

Bypass

Railways

Experience the difference

Experience the effect for yourself as a car passes by the WHIS®wall. This innovative sound barrier from 4Silence deflects noise rather than blocking it, effectively reducing disruptive road and rail sounds. Unlike traditional barriers that are often 3 meters high, the WHIS®wall is only about 1 meter tall, preserving open sightlines and keeping visual impact minimal.

NOTE: Turn up the volume!

Projects with the WHIS®wall

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