Fire Extinguisher Types and Colours: A UK Guide for Businesses
Fire extinguishers are a vital part of fire safety for any business or organisation, but choosing the right type is not always straightforward. The correct provision depends on the fire risks within your premises, the layout of the building, the activities carried out on site and the findings of your fire risk assessment.
Whether you manage an office, retail shop, warehouse, care home, school, hotel, workshop or commercial kitchen, the extinguishers you provide should be suitable for the specific hazards present. Using the wrong type of extinguisher can be ineffective and, in some situations, dangerous.
Under the Regulatory Reform (Fire Safety) Order 2005, the Responsible Person must take appropriate fire safety precautions for their premises. This includes ensuring that suitable fire-fighting equipment is provided, properly installed, tested, maintained and supported by appropriate staff training where required.
## Quick answer: which fire extinguisher does your business need?
Most businesses need a combination of extinguishers matched to the risks identified in their fire risk assessment.
- Offices often require water or foam extinguishers for Class A risks, such as paper, cardboard, wood and textiles, alongside CO₂ extinguishers for electrical equipment.
- Commercial kitchens typically require wet chemical extinguishers for cooking oil and fat fires.
- Workshops, garages, warehouses and industrial premises may need a more specific mix depending on flammable liquids, gases, electrical equipment, vehicles, machinery, battery charging areas or other specialist hazards.
The safest approach is to have your extinguishers specified by a competent fire safety provider, so that the type, number, location and maintenance schedule are suitable for your premises.
Understanding Fire Classes
Before selecting a fire extinguisher, it is essential to understand the different classes of fire:
- Class A: Fires involving solid materials such as wood, paper, textiles, and plastics.
- Class B: Fires caused by flammable liquids like petrol, diesel, and oil.
- Class C: Fires involving flammable gases such as propane, butane, and methane.
- Class D: Fires involving combustible metals like magnesium and aluminium.
- Class F: Fires involving cooking oils and fats, common in commercial kitchens.
- Electrical Fires: While not an official fire class, fires involving electrical equipment require special consideration.
- EV Battery Fires: Fires involving lithium-ion batteries, particularly in electric vehicles (EVs), require specialist extinguishers.
Types of Fire Extinguishers and Their Uses
There are six main types of fire extinguishers used in UK businesses. Each type is designed to tackle specific fire classes.
- Water Extinguishers
- Suitable for Class A fires.
- Not suitable for use on electrical fires or flammable liquids.
- Ideal for offices, retail spaces, and warehouses storing combustible materials.
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Foam Extinguishers
Foam Extinguishers- Effective for Class A and Class B fires.
- Not recommended for electrical fires.
- Commonly used in offices, shops, and garages.
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CO2 (Carbon Dioxide) Extinguishers
CO2 (Carbon Dioxide) Extinguishers- Designed for electrical fires and Class B fires.
- Leaves no residue, making it safe for use around sensitive electronic equipment.
- Essential for offices, server rooms, and workshops with electrical machinery.
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Powder Extinguishers
Powder Extinguishers- Suitable for Class A, B, C, and electrical fires.
- Effective on multiple fire types but can cause visibility and inhalation issues in confined spaces.
- Often found in garages, workshops, and industrial settings.
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Wet Chemical Extinguishers
Wet Chemical Extinguishers- Specifically designed for Class F fires (cooking oils and fats).
- Creates a cooling foam barrier to prevent re-ignition.
- A must-have for commercial kitchens, restaurants, and catering businesses.
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Specialist EV Battery Fire Extinguishers
Specialist EV Battery Fire Extinguishers- Designed to tackle fires involving lithium-ion batteries in electric vehicles and other battery-powered devices.
- Traditional extinguishers such as CO2 and water are ineffective for these fires, as lithium-ion batteries can reignite even after being extinguished.
- Some businesses are investing in Aqueous Vermiculite Dispersion (AVD) extinguishers, which form a cooling barrier to suppress battery fires.
- Essential for car dealerships, EV charging stations, fleet management businesses, and workshops servicing electric vehicles.
Legal Requirements for UK Businesses
Under the Regulatory Reform (Fire Safety) Order 2005, the Responsible Person must assess fire risks and ensure suitable fire safety measures are in place. This includes providing appropriate fire-fighting equipment where required. The type, number and location of extinguishers should be based on your premises, fire risks, escape routes, occupancy and the findings of your fire risk assessment.
Fire extinguishers should be accessible, correctly positioned, clearly identified, regularly checked and properly maintained. Staff should also understand what to do in the event of a fire, including when to raise the alarm, evacuate and avoid tackling a fire.
BAFE states that a basic fire extinguisher service should be performed at least annually, and that the Responsible Person has a duty to ensure extinguishers are maintained by a competent person.
How to Choose the Right Extinguisher for Your Business
- Assess Your Risks: Identify the types of fire hazards present in your workplace. A restaurant will need wet chemical extinguishers, while an office with computers should have CO2 extinguishers.
- Ensure Adequate Coverage: Check that you have enough extinguishers for your space, positioned according to fire safety regulations.
- Comply with Regulations: Work with a fire safety professional to ensure you meet all legal requirements.
- Train Your Staff: Employees should know how to locate and operate extinguishers in an emergency.
Having the right fire extinguisher is not just a legal necessity—it’s a crucial element of workplace safety. Choosing the correct type ensures you can respond effectively in the event of a fire, protecting your employees, customers, and business assets. If you’re unsure whether your fire safety measures are up to standard, consulting a fire protection specialist can provide peace of mind and keep your business compliant.
Fire safety is everyone’s responsibility. Take the time to review your fire extinguishers today—before you need them in an emergency.
Feel free to email us or call us on 01582 469000 for a free assessment, training and more.
Which fire extinguishers are commonly used in different businesses?
| Business type | Common risks | Typical extinguisher considerations |
|---|---|---|
| Offices | Paper, furniture, electrical equipment | Water or foam plus CO₂ |
| Schools, Colleges | Classrooms, kitchens, labs, plant rooms | Mixed provision by area |
| Care Homes | Bedrooms, kitchens, laundries, electrical equipment | Risk-based provision, staff training and regular servicing |
| Hotels | Guest areas, kitchens, laundries, plant rooms | Mixed provision with clear signage and staff training |
| Workshops/garages | Vehicles, oils, fuels, machinery, electrical risks | Foam, CO₂, powder or specialist equipment depending on risk |
| Restaurants/cafés | Cooking oils, electrical equipment, general combustibles | Wet chemical, CO₂ and suitable Class A cover |
Fire extinguisher types and colours: FAQs
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