Whis Wall


The WHIS®wall combines a low noise barrier with a weathering steel diffractor. That amounts to 1 metre in height, all in all. It achieves a 7 to 9 dB noise reduction, equal to a 3 metre regular noise barrier.


The WHIS®wall requires only a flat and strong foundation, so you can produce 300 metres per day.

Its 1 metre height leaves the view intact for residents, drivers, and train travellers.

The WHIS®wall reduces noise 7 to 9 dB.

Because of its high reduction and view preservation, the WHIS®wall receives a lot of support from residents.


  • Standard dimensions: 2980 x 1020 x 1020 mm
  • Reduction frequency range: 400 – 2000 Hz
  • Strength class: C40 / 50
  • Reduction: 7 to 9 dB
  • Weight: ca. 1000 kg / metre
  • Earthing options next to railroads:

Diffracting part

  • Weathering steel
  • Aluminium
  • Galvanized
  • Coated


  • Absorbent concrete
  • Reflective concrete
  • Gabion
  • Stone strips
  • Green image

Foundation types

WHIS®wall been specifically designed to eliminate the need for concrete or piled footings.

Why Choose Gramm Barrier Systems?

Gramm Barrier Systems are one of the only noise barrier specialist in the country give a 30 year guarantee on all our Acoustic Fencing, Acoustic Barriers & Noise Barriers. We also confirm that the barriers are designed to be maintenance free for the full 30 years.

Some of our noise barrier range is fully CE Marked and compliant for use on Highways England schemes under CPR 2013. Also schemes using Sector Scheme 2C, for the supply and installation of Environmental Barriers

All ours materials and installations are to such a high standard we are the only noise barrier specialists to have all our works backed and insured by the government.

Gramm Barriers Noise Barrier systems give the highest level of sound reduction on the market which is why our product’s are specified on many major road and rail schemes.

Gramm Barrier Systems Ltd are fully committed to the highest level of customer service, professionalism and health & safety for every installation. Utilising quality materials in manufacturing, the highest level of expertise, Gramm aim to maintain a quality product that is secure and reliable.

Get a FREE quote

Speak to one of our experts to obtain a free quote on

08442 259002 / 01323 872243

Contact us