Tips for Designing a High-Security Perimeter

Wondering how to approach the design of a high-security perimeter? Here are our 5 tips to help…


#Tip 1: The 5 Ds Of Perimeter Security

When it comes to protecting your unique site, certain common principles apply. The 5 Ds of perimeter security, and the popular onion peel technique in which numerous layers of protection work together to secure a location. In a nutshell, they are:


Deter –  If the perimeter looks secure and difficult to attack, it will deter people from trying.

Detect – Intruders can be detected using PIDs and CCTV.

Deny –  Having appropriate security such as secure fencing and gates to stop people from gaining access easily.

Delay – If you attempt to deter, detect, and deny fail, you have a tested perimeter security system, that has been certified to delay an attack long enough for the police/security to arrive.

Defend – The last line of defence; intruders are apprehended by police or security.

Although this is not a complete list of each of the available security measures, the core principle is still the same: making intrusion difficult. If the risk of getting caught outweighs the ‘gain’ you’re likely to deter.

The actual measures used will vary greatly depending on the risk and consequence of a security breach and the site operational requirements.




#Tip 2: Mitigating Threats

You may be using smart surveillance such as CCTV cameras, and you’re wondering how crucial security fencing is. The fundamental purpose of security fencing is to deter and delay.

CCTV will serve as an additional deterrent and will notify security of a problem, but it will not extend the time it takes security to stop an attack.

If you’re protecting a highly secure site, we recommend using LPS 1175 B3 (SR2) rated fencing or higher to deter intruders in the first place, but if an attack occurs, the fence will delay an attack to allow for security to arrive and intervene.

However, because every site has distinct dangers and requires various solutions, it’s critical to do a risk assessment.


#Tip 3: Ensure There Are No External Factors That Could Aid An Attack

When it comes to searching for security fencing to protect your site, you must look around your site for external factors.

Often these external factors get overlooked and even though they may be so simple, they may not be so straightforward to cross our minds.

These things could be factors such as trees or a power box that an intruder could climb on, to get over the fencing and inside your premises.

Therefore, ensuring there are no external factors like these – will keep your site more secure.


#Tip 4: Site Requirements

It’s time to think about the environment, the ground, how quickly and often access will be required, planning constraints and even the weather conditions! Different types of security fencing and gates are better suited to different environments.

Mesh fencing is frequently seen to be more aesthetically pleasing so may be preferred by planning, however, due to its hard mesh panels, it cannot handle sloping or uneven ground without being stepped or burrowed.

Palisade fencing, on the other hand, has an intimidating appearance and will follow any contours in the ground. A triple or single-pointed pale design makes people think again about climbing the fence because it would be easy to get caught or impaled on. To read more about palisade vs mesh click here.

Bi-fold gates are ideal where opening/closing of the gate needs to be quick, this may be to ensure the person behind can’t tailgate.

However, they are not so reliable in windy conditions as the wind causes havoc with the sensors and pressure. They also need level ground behind the gate where it sits when it’s open.

Cantilevers operate at around 3 seconds per metre and need level ground for the run back on the gate.


#Tip 5: Focus On Value Gained

Another tip is not to look solely at the cost of your security fencing as the main driver. Instead, look at the value gained.

By choosing an appropriate security fence to mitigate your threats, you will have peace of mind that your site is secure and protected, and you don’t have to be concerned that your reputation is on the line if the fence doesn’t perform.

By searching for value, you can ensure you have a high-quality fencing solution that is fully working to protect your site and keep your assets safe.

And if in the unlikely event where something may go wrong, you’ll be assured that you’ll be working with a security fencing company that you trust.



We hope to have provided you with some insight to help you to choose the most appropriate solutions for your site.

Careful consideration may end up saving you money and hassle in the future.

If you’re still unsure about your perimeter security requirements, book a free consultation. Barkers Fencing would be happy to assist you in finding the right security fence to fit your needs.

Or simply call 01782 319264 to speak to an expert today.