Passive Fire Protection

Fire extinguishers

Your First Line of Defence

Millwood provide a range of fire extinguishers and install throughout London and the South-East. Fire extinguishers are essential first-response tools in the fight against fire, providing a crucial means to extinguish small fires before they escalate into major incidents. They are designed to suppress different types of fires, from those involving ordinary combustibles to flammable liquids and electrical equipment. Regular inspections and maintenance of fire extinguishers are vital to ensure they remain in optimal working condition and are readily available for use in emergencies.

Millwood professional inspecting and maintaining fire extinguishers in a client's office.
Millwood professional inspecting and maintaining fire extinguishers in a client's office.

Your Essential Fire-Fighting Tool

Understanding fire extinguishers is crucial for effective fire response. Different fires require specific extinguishers, making a fire risk assessment essential to identify potential hazards in your building. Fires are classified into six categories:

  • Class A: Ordinary combustibles like wood, paper, and cloth
  • Class B: Flammable liquids such as petrol, oil, and paint
  • Class C: Flammable gases like propane and butane
  • Class D: Flammable metals like magnesium and titanium
  • Class E: Electrical fires involving energised equipment
  • Class F: Cooking oil and fat fires

Fire extinguisher types

To combat these diverse fire types, five main extinguisher types exist:

  • Water
  • Powder
  • Foam
  • Wet Chemical
  • Carbon Dioxide (CO2)
  • Additionally, the innovative P50 extinguisher offers a broader range, tackling Class A, B, C, E, and F fires, making it a valuable asset in diverse environments

Selecting the right extinguisher and using it correctly can be the difference between a minor incident and a devastating fire. Ensure your premises are equipped with appropriate extinguishers, and familiarise yourself with their operation to be prepared for any fire emergency.

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Get in touch with our team by phone or fill out our online form to schedule a consultation.

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What we offer

We will advise you on the correct fire extinguisher to use, here is an overview of the different types available.



They offer excellent penetration properties with a good absorbance of heat and quicker cooling effect. They have a long range jet which prevents the user from getting too close to the fire. When the water hots the fire it turns into steam and evaporates. It does not create a mess or long-term damage after the fire has been extinguished, therefore it allows for a shorter business contingency plan. They are limited to Class A fires and water conducts electricity making them unsuitable if the class of fire has an electrical supply, or for use near live electrical equipment.


Dry Powder

Dry Powder fire extinguishers can be used on Class A fires involving combustible solids like wood and paper, Class B fires involving flammable liquids like petrol diesel, spirits and paints and Class C fires involving flammable gases like methane and butane. Cleaning up after the use of these extinguishers can be costly and time consuming as they leave extensive residue. During use visibility is reduced, they can cause corrosion on electrical equipment and they have no or very limited cooling properties.


Foam (AFFF)

These extinguishers produce a foam that acts initially as a blanket, covering the surface area and smothering the fire. They offer improved cooling properties compared with other types of foam fire extinguisher (excluding water types). The foam breaks down the liquid, it drains off and forms a film on the burning surface. The foam also helps to prevent re-ignition. AFFF extinguishers can only be used on Class A and B fires.


Carbon Dioxide (Co2)

This type of extinguisher is most suitable for Class B and electrical fires. They contain pure, compressed CO2 (carbon dioxide) gas which is discharged through a horn as a strong jet of gas. These are often the most popular choice of fire extinguisher, and work by starving the fire of oxygen and therefore putting it out. They shouldn’t be used in confined spaces as CO2 is an asphyxiant gas. These extinguishers have limited cooling properties and they offer no protection against re-ignition. The older type extinguishers are fitted with a non-insulated horn so can cause frost burn if the user touches it when in use. The more modern type are fitted with an insulated horn. Other types of extinguishers will still be required for other types of fires, even indoors, as soon as the CO2 dissipates any remaining embers can reignite the fire.


Wet Chemical

Wet chemical fire extinguishers contain an odourless, clear fluid and are marked by a yellow label. They have their own F class rating. These extinguishers are most suitable for use on deep fat fryers and produce a light foam that rests on the hot surface and spreads itself until the entire surface is covered by foam, cutting off the oxygen supply to the fire. The solution used in wet chemical extinguishers is alkaline, which means it can cause corrosion of some metals. It can also cause irritation to the skin and eyes and extra caution should be taken when handling the extinguisher. They are not suitable for electrical fires.

The Benefits

Fire extinguishers can offer a number of fire safety benefits to your business


Fire extinguishers empower immediate action against fires, preventing escalation and protecting lives and property.


Extinguishers empower anyone to act swiftly during a fire's early stages offering immediate fire suppression, potentially preventing its escalation and minimising damage.


Early intervention with an extinguisher can significantly reduce property damage, minimising repair costs and business downtime.


Having the correct extinguishers demonstrates compliance with fire safety regulations and offers peace of mind, knowing you're prepared for a fire emergency.


A variety of extinguishers can address diverse fire hazards, making them a cost-effective investment compared to potential fire damage losses.

Frequently asked questions

Can I buy my own Fire Extinguishers online and install them my self?‍
Why are there so many types of fire extinguisher?‍
What are the different colour codes on fire extinguishers?‍
How do you use a fire extinguisher?‍
What happens if you use the wrong fire extinguisher?‍
When was the first fire extinguisher invented?‍


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Beyond Code Compliance

We design fire protection systems that prioritise life safety and asset protection. Our meticulous approach considers your building’s occupancy, hazards, and operational needs, going above and beyond minimum regulations. Expertise in both active (alarms, sprinklers) and passive (fire-resistant structures) systems ensures a holistic safety strategy.

Millwood professional inspecting and maintaining fire extinguishers in a client's office.

Install or replace

Expert Installation for Optimal Performance

Our certified technicians bring experience and efficiency to every project. We work strategically to minimise downtime, integrate seamlessly with other building systems and partner with trusted equipment suppliers. Our focus extends beyond installation; we meticulously calibrate and test for guaranteed functionality.

Millwood team installing a fire-resistant door to protect a commercial property.


More Than Just Checkboxes

Our commissioning process is rigorous and goes beyond basic testing.  We simulate real-world scenarios, optimise system response times and provide your team with clear documentation and training. Our aim is not just compliance but reliable protection when it matters most.

Millwood team testing smoke detectors during a routine inspection of emergency systems.

Maintain & repair

Preventing Problems, Protecting Your Investment

We tailor maintenance plans to your specific systems and risk profile. Our technicians are trained to spot potential issues before they become emergencies, offering cost-effective solutions. From routine inspections to swift emergency repairs, we are your partner in safeguarding the long-term safety of your facility.

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Connect With Us
In a quick 15-minute call, we’ll chat about your fire safety concerns and get a clear understanding of your needs. We’ll answer your questions directly and determine if an on-site visit is the best course of action for moving forward.


On-Site Assessment
For a deeper dive, we’ll conduct a comprehensive on-site visit. This allows us to assess your building’s layout, fire safety systems, and potential hazards. We’ll also discuss relevant regulations and answer your questions in detail.


Tailored Solutions
Following the visit, you’ll receive a clear report outlining our key findings and recommendations. We’ll present potential solutions or next steps, like a detailed fire risk assessment, always keeping your specific needs in mind.


Partnership for Success
Ready to move forward? We’ll develop a customised proposal outlining the scope of work, timeline and comprehensive cost estimate. Our team is here to answer any questions and ensure you feel confident in every step of the process.
Start your Fire Safety Journey
Get in touch with our team by phone or fill out our online form to schedule a consultation.
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