Security and Fire Safety: How to Prevent Systems from Working Against Each Other

When it comes to protecting your premises, fire safety and security should go hand in hand — but all too often, they pull in opposite directions – a fire door propped open to ease access, an emergency exit blocked to deter intruders. Security systems that lock doors just when you need them to open.

These issues are more common than many realise, especially in schools, office blocks, and shared buildings. If your systems are not properly integrated, you could be putting people at risk.

In this blog, we explore how fire safety and security can clash — and how a smarter, joined-up approach can keep everyone safer.

When systems clash: common issues

In many buildings, especially schools, offices and mixed-use sites, fire safety and security measures can unintentionally work against each other.

Fire doors, for example, are often propped open with wedges or furniture to improve visibility or access — but in an emergency, those doors are designed to close automatically and prevent the spread of fire and smoke. If blocked, they can’t do their job.

Similarly, external fire exits are sometimes kept locked or gated due to fears of unauthorised entry, creating a dangerous obstacle in an evacuation. In more advanced setups, internal security doors might remain locked if the access control system isn’t correctly linked to the fire alarm — delaying escape and putting lives at risk.

Even when systems are functioning correctly, confusion can still arise. If fire and intruder alarms are not integrated, they may give conflicting signals or be misinterpreted during an emergency. And without proper training, staff may not know how to override security features to exit safely. These clashes are not just frustrating — they can be life-threatening. That’s why a joined-up strategy is essential.

The safety vs security dilemma

Fire safety and security often pull in opposite directions. One demands free-flowing evacuation routes and open access in an emergency; the other relies on controlled entry, locked doors and restricted zones.

When these priorities are treated separately, the result can be confusion, non-compliance — or dangerous blind spots.

In schools, for example, high perimeter security might involve locked gates and secure lobby systems. But if those measures aren’t linked to the fire alarm, a swift evacuation could be hindered.

In office blocks, internal access control doors may stay locked unless the fire system tells them otherwise. And in shared residential or commercial buildings, residents and tenants may not even know how security systems behave in a fire — or whether they are supposed to override them.

Trying to solve one problem without considering the other can introduce new risks. Security should never come at the cost of safe exit routes — but neither should fire safety measures leave a building vulnerable to intruders.

This is why the two need to be considered together from the outset, not bolted on in isolation. A well-designed system protects both people and property — without compromise.

Smarter access control for safer evacuation

Modern access control no longer means choosing between safety and security. With the right system design, doors can unlock automatically during a fire alarm, guiding people safely out without compromising overall protection.

The key lies in understanding which locks to use where. Fail-safe locks release when power is lost or an alarm is triggered — ideal for fire exits. Fail-secure locks stay locked without power, keeping sensitive areas protected. Using the right type in the right zone is crucial, particularly in schools, offices or mixed-use buildings.

Emergency override features like battery backups, break-glass units and push-to-exit buttons offer essential fail-safes. But they must be visible, well-maintained, and understood by all staff.

Equally important is zoning. Not every door needs to open during an evacuation — just the ones that lead to a safe and efficient exit. Smart systems can release key access points while keeping back-office or sensitive areas locked, helping to strike the right balance.

With expert planning, it is entirely possible to build a system that unlocks when lives depend on it, but holds fast when protection is essential.

Integration is key: linking fire and security systems

Even the best fire safety and security systems can work against each other if they aren’t properly integrated. A classic example? A fire panel sending a signal to unlock all exit doors, while the intruder alarm tries to lock them down. Confused systems cause dangerous delays.

That’s why your fire panel should be fully linked to your access control, intruder alarm, and even CCTV system — creating a unified response in any emergency. For example, a fire trigger could automatically release zoned doors, deactivate security barriers, and notify designated staff or emergency services.

Timed-release doors, priority zones, and override rules all help prevent miscommunication between systems. Integration also enables smarter alerts, such as alarms prompting visual checks via connected cameras.

But integration isn’t a one-time task — it must be tested regularly. Planned drills and scheduled maintenance help ensure that all systems respond correctly when it matters most.

With the right setup, fire and security can work together rather than compete, creating a safer environment all round.

Secure your premises without compromising safety – with help from Barry Bros Security

When security systems and fire safety measures aren’t aligned, you risk putting people in danger — and falling short of compliance. At Barry Bros Security, we specialise in designing integrated solutions that protect both people and property.

From schools and office blocks to public venues, we help premises managers create environments that are both secure and safe to evacuate. Our systems are built with both regulation and real-world behaviour in mind — so nothing gets in the way of a safe escape.

Need to review your setup? Get in touch to book a consultation – and let our experts help you rethink your fire and security systems the smart way. You can also visit our London showroom for face-to-face advice.