WHIS®wall is a 1 metre high noise barrier with a diffractor made from weathering steel and concrete, designed to reduce noise by 7 to 9 dB - comparable to a standard 3 metre barrier - while preserving views. Suitable for rapid installation on flat, strong foundations without the need for concrete or piled footings.

  • Low-profile noise barrier with high sound reduction

  • Maintains clear views for residents, drivers, and train passengers

  • Reduces noise by 7 to 9 dB in the 400–2000 Hz range

  • Quick installation rate of up to 300 metres per day

  • Supports multiple foundation types, no deep footings required

  • Receives strong support from local communities

Applications

  • Roadside noise reduction

  • Railway noise mitigation

  • Residential area sound control

  • Urban infrastructure projects

Dimensions

Height 1020 mm

Width 2980 mm

Depth 1020 mm

Weight approx. 1000 kg per metre

Materials

  • Weathering steel

  • Concrete (absorbent or reflective)

  • Aluminium

  • Galvanized steel

  • Gabion stone strips

Options and variations

Diffracting part in weathering steel, aluminium, galvanized, or coated finish

Substructure in absorbent or reflective concrete, gabion, or green image

Performance

  • Noise reduction 7–9 dB

  • Frequency range 400–2000 Hz

  • Strength class C40/50

Installation

Requires flat, strong foundation

No concrete or piled footings needed

Warranty

30 year guarantee

Maintenance

Designed to be maintenance free for 30 years