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Highway Noise Barrier

Environmental Barrier

  • A photo of a Highway Noise Barier

Description of Structure

The highway noise barrier fences are acoustic barriers in accordance with Clause 2504 of the specification for Highway Works. (1998 consolidation version) and Departmental Standard HA 66-95 – Environmental Barriers: Technical Requirements.

The fence has been laboratory tested in accordance with BS EN 1793:1998 (Parts 1-3) and has reached performance category B3 or A3.

The installation will be carried out by an installer registered to BS 9001:2000  Sector Scheme Document 2 C (The Design, Supply, Installation and Repair of Environmental Barriers (Structural))

Structural Type

The supporting posts of the noise barriers acoustic fencing are vertical cantilevers in structural steel sections embedded into mass concrete foundations of 1m depth x 0.45m diameter.

The infill panels are constructed using timber rails spanning horizontally between the supporting posts and vertical timber boards spanning continuously over the rails.

Absorptive panels will have a rockwool infill with a protective membrane over the face.

Foundation Type

The barrier will be founded in the existing ground on mass concrete foundations.

Articulation Arrangements

The posts act as vertical cantilevers and the panels act as simply supported one-way spanning slabs.

Proposed Arrangements for Inspection and Maintenance

Design life – 40 years, no major maintenance for 20 years. The environmental barrier should be inspected for maintenance during normal routine highway boundary inspections.

Materials and Finishes

Environmental Barrier:

The posts of the acoustic fencing are UB section steel Grade S275JR to BS EN 10025:1993, and will be galvanised to BS EN ISO 1461:1999, after fabrication. The posts will be embedded into isolated mass concrete foundations to a depth of 1m x 0.45 m diameter. The concrete mix for the foundations will be ST5 and there are no special requirements for resistance to ground sulphates for this site.

The timber components of the barrier will be treated using Tanalithe “E” (Green). The top will be finished with a once weathered capping. The reflective face of the fence will consist of 150mm*22mm vertical boards and 65mm cover strips, nailed through into the rails and gravel board using galvanised annular ring shank nails.

All timber to be preservative treated to BS 5589:1989.

Technical

*For Quixolid, 1100 mm / **Not available from stock in RAL 7016
Fence height
(m)
Panel Size WxH (mm)No. “V” Bars per panelOverall Length of PostPost Size (mm)No. Clips Per PostNo. Clips Per Corner
1.21230 x 30052180060 x 6036
1.51530 x 30053210060 x 6048
1.81730 x 30053240060 x 6048
2.01930 x 30053270060 x 6048
2.42330 x 30054315060 x 60510
3.02930 x 24455390060 x 60612

Unbeatable Installation Guarantee

We guarantee our commercial fencing installation for 10 years because we are confident it will last.

Unlike many commercial fencing contractors who only provide the manufacturer’s warranty for materials, we also cover our installation.

You can trust that our work will hold up for a decade longer than anyone else’s.

Knight Fencing 10 Year Installation Guarantee Badge

Quick Quote for Commercial Fencing and Gates

If you’re looking for reliable, experienced commercial fencing contractors, Knight Fencing is the trusted supplier you’ve been looking for.

We offer a free site visit and quotation, ensuring you get the best fencing and gate solution for your commercial property.

Contact us today to discuss your project and get expert advice from our team.

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Knight Fencing
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Krug T B.
I think these guys are great
Very helpful
Hannah H.
Just had my back garden fence replaced by 2 of the guys and I am so please it with it amazing job .
Michael P.
Knight installed new fencing for my rear garden. Looks great and I am very pleased with their service.
Malcolm B.
In June 2025 excellent fitters Kevin and George from Knight installed these well made Iroko double gates.
Sarah H.
New garden gate, super service and lovely quality, am delighted with the result and many thanks to the team for their work, it looks great, thank you!
Simon S.
Always friendly and helpful
Competitive prices too
Ian V.
GREAT FENCING!!! We asked Knight Fencing to run 4ft 6"double closeboard with 18" close diamond trellis around our last property (in Bedhampton). This was because we saw what a great job they had done at one of our friend's gardens (in Southbourne). Then another friend saw what we had installed and Knight Fencing did the same for them at 6ft 6" around 3 sides of their back garden (also in Bedhampton). We then had the bottom of our garden re-fenced with 6ft 6" double closeboard when we first moved into our new property (in Purbrook). We are now ready to have the rest of the garden re-fenced and have no hesitation to call Knight Fencing again. Any time anyone has seen these 4 fencing jobs they only say what strong, professional and quality fencing it is.
Deborah O.
We had a new gate installed and our double security gates made higher.

The workman were friendly, efficient and the work was carried out to a high standard.

We would highly recommend knight Fencing

Michael & Debbie O'connor x
Alastair H.
Great job on my fencing and gates from Knight fencing. Five star service.
Joe G.
First class products, professional attention and thoroughly reliable. Brilliant!

Trusted, Accredited, and Committed to Excellence

Association of Fencing-Industries
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AJS Training
Constructionline Gold Member
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CHAS accreditation advanced
Alexandra recommened installer

Trusted, Accredited, and Committed to Excellence

Association of Fencing-Industries
DuraPost Trained Installer
SMAS Worksafe preferred supplier
Postsaver Approved Installer
AJS Training
Constructionline Gold Member
CLD approved installer
Checkatrade.com members
CHAS accreditation advanced
Alexandra recommened installer

Helpful Guides

  • A Guide To Security Fencing
  • A Guide To Product Finishes
  • A Guide To Fencing & Your Boundary Rights
  • Free Guide For School Fencing For Specifiers
  • Guide to Sports and Spectator Fencing
  • Guide to installing timber gates
Knight Fencing
Based on 37 reviews

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News, Tips and Advice

  • Knight Fencing Delivers Hands-On Workshop at West Sussex Alternative Provision CentreJune 23, 2025 - 1:00 pm
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Knight Fencing
Based on 37 reviews