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