SR1 Fence HiSec | SR Rated Security Fencing | Zaun Ltd

03. HiSec SR1 (A1) Rated Fencing

HiSec SR1 fence from Zaun uses the popular 358 welded mesh configuration. Ideal for use in applications where Secured by Design accreditation is required. Therefore, the HiSec SR1 fence system attributes make it an excellent solution for perimeter security applications, including schools, utility suppliers, or anywhere required physical security protection.

The HiSec SR1 fences use the tight 76.2 x 12.7mm mesh configuration, making it difficult to get a finger hold within the apertures to scale and climb the fencing without climbing aids.

HiSec SR1 fence panels are available in 2.0, 2.4 and 3.0 metres in height. Installed using stainless steel tamper-resistant fixings, the result is a rigid perimeter fence that offers a high degree of vandal resistance and an extremely high level of visibility, ideal for use with CCTV and other detection systems.

The HiSec SR1 fence system offers the same product benefits as the standard HiSec, but with added security. In addition, manufacturing is subject to stringent quality control, which means all fences are uniformly high quality.

This system conforms to BS 1722: Part 14: Category 4 and carries certification to LPS 1175 SR1 (under LPS1175 issue 7) and A1 (under LPS1175 issue 8). This is required for Secured by Design and featured in the BRE Red Book.


All Zaun posts/panels/gates and painted auxiliary components (for example, clamp-bars, slide bolts etc.) benefit from a protective zinc layer and electrostatically applied polyester powder coating to BS1722 p16. Care is taken with pre-treatment to ensure sound adhesion between the zinc layer and the paint. In a UK C1 environment, as defined in ISO 12944 p2, this should ensure a useful life expectancy of the fence of at least 15-20 years. Life expectancy in all environments can be extended by the maintenance of the fencing with regular washing. Useful life will be reduced if the fencing is damaged. Any coating damage should be repaired to reduce the effect on useful life.

Enhanced painting systems such as marine coatings are also available for improved life expectancy in C2-C5M environments.

For a full list of colours, click here

Posts & Fixings

The HiSec SR1 perimeter security fencing system features a post and clamp bar configuration, providing a simple and easy installation method. Supplied with stainless steel through bolts, nuts and washers and installed using either power or hand tools.

Sloping Ground

Panels can be stepped as required on the post. However, on steeper gradients, it is recommended that taller panels are either part-buried or additional posts are used. Panels can also be sloped to follow lesser gradients.


Posts are available in different lengths to accommodate panel heights and ground conditions. Additional variations are also available:

Matching SR1 Rated Security Gates

Pedestrian gates are single leaf 1.2m wide (or width to suit), framed in a 50mm x 50mm RHS with Zaun HiSec mesh clad to the front face of the gate frame, with slide latch. Gate supplied with 2 x suitable gate posts.

Vehicle access gates are double leaf (single leaf vehicle gates available) 3.0m wide (or width to suit), framed in 50mm x 50mm RHS, with Zaun HiSec mesh clad to the front face of the gate frame, with drop bolts and slide latch. Gate supplied with 2 x suitable gate posts.

HiSec SR1 Fence Samples Available

Samples of Zaun HiSec are available upon request. To request your free sample, please click here.

What is LPS1175?

SR Ratings and LPS 1175 is the requirements and testing procedures for the LPCB approval. A listing of intruder resistant building components, strong points, security enclosures, and free-standing barriers, fencing, and gates.

LPS 1175 covers the broadest scope of physical security products and services of any publicly available standard globally. LPS 1175 results from many years of LPCB, the UK Government, Insurers, and the Police. It has rapidly become a core element of physical security specification across many sectors. more…


Features and Benefits
  • Security rated at LPS1175 A1 (SR1 under issue 7) by BRE LPCB LPS1175 as featured in the Red Book.
  • Conforms to BS1722: Part 14
  • Manufactured to the traditional 358 mesh pattern regularly associated with prisons
  • The tight welded mesh offers no climbing aids and mitigates attack by hand and powered tools.
  • Open mesh pattern provides excellent visibility.
  • Single panel heights can be supplied of up to a maximum of 3 metres
  • Available either bolt down, in-ground or on wall
  • Secured By Design approved
Download To download our HiSec SR1 358 Mesh datasheet, please click on the link below; To download our Q40 specification sheet, please click on the link below; To download our test certificate, please click on the link below To download our standard colour list, please click on the link below; To download our brochures, please click on the link below;
Height 2007, 2438, 2997mm (Note: Additional heights available upon request)
Panel Width Max. 2976mm
Mesh Size 76.2 x 12.7mm
Wire Diameter 4mm Verticals x 4mm Horizontals
Top Edge Projection Minimal Projections
Post Size 80 x 40 / 100 x 50 Dependant on Height
Clamp Bar Size 40 x 5mm
Post Centres Max. 2925
Fixing Centres Max. 400mm
Fixings Stainless Steel Through Bolts, Nuts and Washers
Note: Zaun manufactures 358 from cut to length line wires; the panels are not cropped.  They are supplied as standard with short protruding wires on top and bottom. If flush panels are required, this should be requested at the time of enquiry.

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Certifications and Approvals