Security Fog FAQs: Everything You Need to Know

Smoke Screen is an advanced security fog system designed to stop intruders during a break-in. When the system is triggered by an alarm or security sensor, a fog generator releases dense fog that fills the protected space within seconds.

The fog dramatically reduces visibility, preventing criminals from seeing valuables, equipment, or exits. Without the ability to see what they came to steal, intruders are forced to abandon the attempt.

Security fog technology is widely used in retail stores, warehouses, offices, banks, and residential environments where fast theft prevention is essential.

Traditional security systems such as alarms and surveillance cameras typically detect crime after it has already begun. While they can alert authorities or record evidence, they do not always prevent the theft itself.

Security fog systems take a different approach. By deploying fog immediately during an intrusion, the system removes visibility and stops criminals from locating valuables.

This proactive approach makes security fog one of the most effective methods of preventing theft and protecting both property and people.

No. One of the most common security fog questions is whether the fog is harmful.

The answer is no. Security fog systems use specially formulated fluid that creates a dense visual barrier while remaining safe for indoor environments.

If you are wondering “is security fog safe?”, the fog used in Smoke Screen systems is:

• Non-toxic

• Non-irritating

• Residue-free

It does not damage electronics, stock, furniture, or building interiors. Once the fog disperses, the environment returns to normal without requiring cleanup.

The fog system cost depends on several factors, including the size of the space being protected and the type of fog generator required.

Smaller systems designed for offices or retail spaces generally have lower equipment costs, while larger industrial fog systems designed for warehouses or distribution centres may require higher-capacity units.

In addition to equipment costs, there may also be fog installation costs depending on the complexity of the installation and integration with existing alarm systems.

Because every environment is different, the best way to determine accurate security fog pricing is to request a tailored quote.

No. Security fog systems are designed to be completely safe for indoor environments.

The fog produced by Smoke Screen machines is residue-free, meaning it does not leave stains or deposits on surfaces. Electronics, packaging, fabrics, and furniture remain unharmed.

Once the fog disperses naturally, the room returns to normal conditions without the need for cleaning or repairs.

Not necessarily. Security fog systems are designed to remove visibility quickly in the areas where valuable assets are located.

In some cases the entire room may fill with fog, particularly in smaller environments. In larger areas, the system may be configured to focus on critical zones such as shop floors, storage areas, or cash offices.

The goal is to prevent intruders from seeing valuables or navigating the environment.

Make sure you and anyone else in the area are safe. If your Smoke Screen is connected to a monitoring system, the station will be notified. If not, call the South African Police Service (SAPS) or your security company immediately.

If you are inside the protected area when the Smoke Screen activates, remain calm. The fog will quickly reduce visibility, so lower yourself to the floor and move carefully toward a designated safe area.

Remain where you are until visibility starts to return, then make your way to the exit and wait for the police.

Stay where you are until visibility begins to improve. Once the fog starts to disperse and it is safe to move, carefully make your way to the nearest exit and wait outside the building for security personnel or police to arrive.

If the activation occurs outside normal operating hours, do not attempt to enter the protected area immediately. Allow the system to complete its pre-set deployment cycle before approaching the building.

Before entering the premises, check for any obvious signs of forced entry such as broken doors, windows, or damaged locks. If you notice signs of intrusion or suspect that criminals may still be inside, remain outside and wait for the police or security response team to arrive.

While waiting for the fog to clear, remain alert and keep watch for intruders who may still be hiding inside the premises.

As visibility improves, additional doors and windows can be opened to speed up the ventilation process.

Once the area is fully clear and safe to enter, check the fog fluid levels in each Smoke Screen machine and replace the fluid if necessary so the system is ready for future activations.

No. Smoke Screen systems are designed so that the fog fluid lasts for multiple activations. Depending on the specific machine and deployment settings, a full fluid container will typically support between four and eight activations before it needs to be replaced.

Each Smoke Screen unit monitors its own fluid levels and will notify you when attention is required. The system will display alerts such as “Low Fluid” or “Empty Fluid”, allowing you to schedule a refill during routine maintenance.

Regular checks of fluid levels help ensure the system remains fully operational and ready to deploy fog protection whenever it is needed.

The fog is designed to remain dense long enough to stop the theft and allow time for authorities or security teams to respond.

The exact duration depends on factors such as room size, retrigger settings, ventilation, and airflow within the building.

In most environments, the fog begins to disperse gradually after several minutes.

Security fog systems can include tamper protection features that trigger alerts if someone attempts to interfere with the unit.

If tampering is detected, the connected alarm system can activate or notify the monitoring centre, allowing security personnel to respond quickly.

Fog generators are typically installed in locations that allow the fog to fire downwards to create a mushroom effect when the fog hits the floor, allowing even more coverage.

Common installation points include ceilings, high walls, or elevated positions where the fog can spread effectively.

Professional installers assess the layout of the building to determine the most effective installation location.

Security fog systems should always be installed by trained professionals.

Professional fog installation ensures that the system integrates correctly with the alarm system and performs reliably during an intrusion.

Improper installation may affect the performance of the fog system or reduce its effectiveness.

Yes. Large environments such as warehouses, logistics facilities, and retail floors can be protected using multiple fog generators working together.

These systems can rapidly fill large areas with fog, providing effective protection for high-value environments.

Most modern security fog systems are designed to integrate with standard alarm systems and intrusion sensors.

This allows the fog generator to activate automatically when an intrusion is detected.

Your installer will confirm compatibility during the installation process.

Security fog systems are designed to prevent theft without causing harm to intruders.

Because the fog is non-toxic and safe for indoor environments, legal challenges have never occurred. Smoke Screen have product and public liability cover that covers all eventualities, and we have never had a successful claim against us.

Police and security authorities generally support proactive crime prevention technologies that help reduce theft and protect people.

Security fog systems are recognised as an effective deterrent that prevents criminals from accessing valuables without requiring physical confrontation.

Many insurers recognise the fog effectiveness of security fog systems because they actively prevent theft and reduce financial losses.

Installing security fog may strengthen your overall security profile and demonstrate that you are taking proactive steps to protect your property.

Some insurance providers offer reduced premiums when advanced security measures are installed.

While discounts vary depending on the insurer and policy, security fog systems can improve your risk profile and may lead to reduced insurance costs.

Yes. Security fog systems are governed by recognised international safety and performance standards.

Smoke Screen systems comply with BS EN 50131-8:2019, the European standard for alarm systems covering intrusion and hold-up systems, specifically relating to security fog devices. This standard was developed by the British Standards Institution (BSI) in collaboration with the European Committee for Electrotechnical Standardisation (CENELEC) to ensure that fog systems operate safely and effectively during security incidents.

In addition, Smoke Screen technology complies with IEC 62642-8:2011, an internationally recognised standard developed by the International Electrotechnical Commission (IEC) in Geneva. This standard is used worldwide and sets guidelines for the performance, safety, and reliability of security fog systems.

Compliance with these standards ensures that Smoke Screen systems meet strict requirements for safety, quality, and effectiveness when deployed in both commercial and residential environments.