When we talk about security fencing, it’s easy to assume there is one standard that defines what’s right and what isn’t. In reality, there are several standards. Some focus on tested security performance and others relate to how fencing is made, installed or protected.
Understanding the difference helps ensure the right solution is specified from the start.
Not every site needs certified high-security fencing, but it is important to understand what the standards mean and when they apply. The aim is to get the balance right. The perimeter should suit the environment, without adding unnecessary complexity or leaving gaps in protection.
Why Do Fencing Standards Exist?
Fencing standards exist to provide clarity by providing a shared reference point, so everyone understands what is being specified and why.
They help answer simple but important questions. Is the fence suitable for its intended use? Will it last? Has it been made and installed properly? Does it provide the level of protection the site actually needs?
Not all standards relate to security testing. Many are about ensuring fencing performs reliably over the long term.
Security Testing Standards: Understanding LPS 1175
One of the most widely recognised security standards in the UK is LPS 1175. It is developed and managed by the Loss Prevention Certification Board (LPCB), part of BRE Group, which is an independent organisation that tests and certifies security products.
LPS 1175 focuses on one key thing, which is how well a system can delay someone trying to break through.
Products are physically tested using real tools instead of relying on assumptions. The goal isn’t to make something completely impenetrable but it is to slow access down long enough for security measures like alarms or personnel to respond.
This links to what is often referred to as the security triangle, deter, detect and delay. Fencing plays an important role in all three. It creates a clear boundary, acts as a visible deterrent and slows unauthorised access. That delay is critical, because it gives time for detection and response.
The higher classifications involve more demanding tests, using heavier tools and longer attack times. These are typically used in environments where the risk is greater, such as utilities, infrastructure and data facilities.
You may still hear older SR ratings mentioned, particularly when referring to existing installation, however, new certifications now use an updated classification system.
BRE and LPCB also manage related standards, such as LPS 1673, which focuses on shorter, more aggressive attacks. This is more commonly used for doors and shutters, but it follows the same principle of independently testing products to confirm how they perform.
Verifying Certification: What Is RedBookLive?
When a product is certified to LPS 1175, it is listed on RedBookLive which is the official online database managed by LPCB.
RedBookLive allows specifiers, contractors and clients to check that a product has been independently tested and certified. It also shows the classification achieved helping confirm the level of protection provided.
In practice, it gives confidence that the system being specified has been properly tested and verified, instead of relying on claims alone.
Current LPS 1175 Classifications
The current version of LPS 1175 uses a classification system based on two factors which are the type of tools used during testing and how long the system can resist attack.
For example, classifications like A1, B3, C5 and D10 indicate increasing levels of resistance. As the classification increases, the tools used become more capable and the expected delay time becomes longer.
This allows fencing to be specified in a way that matches the level of risk. Lower classifications may be suitable where deterrence is the main objective, while higher classifications are typically used in more sensitive environments.
The scale extends beyond D10 to higher levels and these involve more advanced tools and longer delay times and are generally used in specialist high-security applications.
Our ProtEx ranges are independently tested to LPS 1175 classifications, providing certified perimeter protection where verified performance is required.
Why the Standard Was Updated
LPS 1175 has been updated over time to reflect how threats and tools have changed. Power tools are now easier to buy, more powerful and more accessible than they were in the past.
Equipment that was once specialist is now widely available, meaning security standards need to reflect realistic attack conditions.
Issue 8 introduced a revised classification system to better represent how systems perform against modern tools and real-world threats. It also recognises that security works in layers. The overall effectiveness of a perimeter depends on each area performing as expected, helping ensure the right level of protection is in place.
Legacy SR Ratings
Earlier versions of LPS 1175 used security ratings like SR1, SR2 and SR3 which are still referenced on older installations and specifications.
The current Issue 8 classification system provides greater clarity by linking tool type and delay time. While SR ratings are no longer used for new certifications, they remain useful when reviewing or upgrading existing fencing.
NPSA Guidance and the Move Towards Recognised Certification
The National Protective Security Authority (NPSA), formerly known as CPNI, provides guidance on protecting critical national infrastructure and sensitive locations.
In the past, government-backed schemes existed alongside industry standards but today, independently tested certifications like LPS 1175 are widely used as the recognised benchmark.
NPSA now focuses on providing risk-based guidance, helping ensure the level of security specified is appropriate for the site and its risks.
Secured by Design (SBD)
Secured by Design is a UK Police initiative that promotes crime prevention through good design and is commonly used in residential, education and commercial sectors. The focus is on creating clear boundaries by improving visibility and therefore discouraging unauthorised access. This often means selecting fencing that supports the overall environment without needing formal forced-entry certification.
Fencing designed to Secured by Design principles helps create safer environments while maintaining a strong and durable perimeter.
General Fencing Standards and the Role of BS 1722
Not all fencing is designed to resist forced entry. Sometimes the purpose is to define boundaries and manage access or to provide a reliable perimeter.
BS 1722 is the main standard covering general steel fencing. It sets out requirements for construction, materials to be used and installation. This helps ensure fencing is installed correctly and performs as expected over time by focussing on quality and consistency rather than security testing.
Material and Coating Standards
Durability is an important part of any metal fencing system as exposure to weather and environmental conditions can affect performance over time.
Standards like BS EN ISO 1461 for galvanising and BS EN 13438 for powder coating help protect steel from corrosion. Together, they extend the lifespan of the fencing and reduce the need for long-term maintenance, while also improving its overall appearance.
Product Conformity and Compliance
UKCA marking confirms that products meet relevant regulatory requirements for use in the UK. While it is not a security certification, it does demonstrate that products have been manufactured in line with recognised compliance standards which helps ensure suitability for regulated projects and public sector use.
The Importance of Installation
Even the best fencing system will not perform properly if it is installed incorrectly. Ground conditions, foundations and fixings all affect how the fence performs long term.
Standards help define the product, but correct installation ensures it works as intended in real-world conditions. Following manufacturer installation guidance is important, particularly for certified systems, as performance ratings apply only when the system is installed correctly.
Installation guides and technical support help ensure fencing performs as expected and delivers the level of protection it was designed to provide.
How These Standards Work Together in Practice
Most projects involve more than one standard. For example, a specification may include construction standards such as BS 1722, coating standards to ensure durability and then also LPS 1175 where certified security performance is required. This reflects how perimeter security works in practice with each element playing a role in creating an effective system.
Choosing the Appropriate Level of Assurance
Not every site needs certified security fencing. Often, well designed fencing provides effective deterrence and boundary protection without formal testing. The right solution depends on the site, the risks involved and any regulatory requirements. It is important to select the most appropriate one rather than the highest classification.
International Standards and Global Reference Points
While LPS 1175 is widely used in the UK, other standards exist internationally.
ASTM standards are often referenced in North America, while EN 1627 is used in Europe to classify resistance to forced entry for building elements. These standards are not specific to fencing but they follow the same principle of testing products to confirm how they perform.
These global standards follow a similar approach to the UK by using defined testing methods and classifications to provide confidence in security performance across different markets.
Industry Guidance and Security Expertise
If you are unsure which fencing standard is appropriate, seeking independent guidance can help ensure the right solution is specified.
We work with independent security consultants and can help connect you with specialist expertise where needed. This guidance is independent of ExMesh Engineering and focused on ensuring the most appropriate solution is specified for the environment and threat level. Get in touch with us for more guidance.
Conclusion
Security fencing standards cover more than just forced-entry testing. They help ensure fencing is reliable and durable as well as being appropriate for its environment.
Understanding how these standards work makes it easier to specify fencing that provides the right level of protection without unnecessary complexity.
Want to learn more about the critical standards and best practices for securing perimeters with fencing?
