What is BS 5839? A Guide to British Fire Alarm Standards

Guest Post By Adam Chalky, Applewood Fire & Security
If you’re responsible for the safety of a commercial building – whether it’s an office, warehouse, school, or shop – you’ve likely come across the term BS 5839. But what exactly does it mean? And more importantly, what does it mean for you and your business?
At Applewood Fire & Security, we often help clients navigate the complexities of fire safety compliance. In this article, I’ll break down what BS 5839 is, why it matters, and how you can ensure your property meets the standard.

🔥 What is BS 5839?
BS 5839 stands for British Standard 5839, a detailed set of guidelines that covers the design, installation, commissioning, and maintenance of fire detection and fire alarm systems in non-domestic premises.
The full name is:
 BS 5839-1:2017 – Fire detection and fire alarm systems for buildings – Code of practice for design, installation, commissioning and maintenance of systems in non-domestic premises.
In short, it’s the go-to standard for anyone responsible for ensuring that a building’s fire alarm system is fit for purpose and legally compliant.

🧯 Why is it Important?
BS 5839 ensures that fire alarm systems:
• Are designed to suit the specific risk level and layout of the building
• Provide adequate warning to occupants in the event of a fire
• Are maintained properly so they work when needed most
• Comply with UK fire safety legislation, including the Regulatory Reform (Fire Safety) Order 2005
Failure to comply can lead to:
• Legal action and enforcement notices
• Insurance complications
• Risk to life and property
• Damage to your business’s reputation
Simply put, BS 5839 is about keeping people safe—and making sure you’ve done everything reasonably possible to prevent harm in the event of a fire.

🏢 Who Does BS 5839 Apply To?
BS 5839 applies to non-domestic buildings. This includes:
• Offices
• Retail premises
• Warehouses
• Factories
• Hotels
• Schools
• Hospitals
• Care homes
• HMOs (Houses in Multiple Occupation)
If you own, manage, or are the “Responsible Person” for a commercial building, you are legally obligated to ensure your fire detection and alarm system is compliant with BS 5839.

🔎 What Does BS 5839 Cover?
Here are some of the key areas the standard addresses:

  1. System Design
    What type of system is needed? Where should detectors and sounders be placed? The design must reflect the size, layout, and use of the building.
  2. Installation
    Fire alarms must be installed by a competent professional, following manufacturer guidelines and best practices.
  3. Commissioning
    Once installed, the system must be thoroughly tested and documented before being handed over.
  4. Maintenance
    Regular maintenance and testing are essential. This includes:
    • Weekly tests by the building owner or designated person
    • Biannual servicing by a qualified engineer
    • Record-keeping of all inspections, faults, and work done
  5. System Categories (L1 – L5, M, P1, P2)
    BS 5839 defines different system categories based on risk. For example:
    • L1: Maximum life protection—detectors in all rooms and circulation areas
    • M: Manual systems only (e.g. break glass call points)
    • P1: Property protection with automatic detection throughout
    Choosing the right category depends on your building’s function, fire risk, and occupancy.

🛠 How Applewood Fire & Security Can Help
Navigating BS 5839 requirements can feel overwhelming. That’s where we come in.
At Applewood Fire & Security, we offer:
• 🔍 Fire risk assessments
• 🛠️ Design, installation, and commissioning of compliant fire alarm systems
• 🔄 Routine maintenance and testing
• 📋 Documentation and logbooks to meet audit and insurance requirements
• 🧑‍🏫 Advice and training for your staff or Responsible Persons
Our engineers are highly experienced and fully qualified to help ensure your system doesn’t just meet the standard—but truly protects your people and property.

✅ Stay Safe. Stay Compliant.
BS 5839 isn’t just about ticking boxes. It’s about ensuring that if the worst happens, your fire alarm system does exactly what it’s supposed to do—warn occupants, trigger the right response, and help save lives.
If you’re unsure whether your system meets the current standards, or if you’re planning a new installation, we’re here to help.
📞 Call us on +442036969489


📧 Email us at security@apple-wood.co.uk

🌐 Visit us at www.apple-wood.co.uk
Don’t leave fire safety to chance. Trust Applewood to help you get it right.
Stay safe,
 Adam Chalky 
Applewood Fire & Security

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Top 10 Essential Home Services Every Homeowner Should Know About

Owning a home comes with the responsibility of maintaining it properly to ensure safety, comfort, and longevity. While some maintenance tasks can be handled by homeowners, many require professional services to prevent costly repairs and ensure efficiency. Here are the top 10 essential home services every homeowner should know about.

1. Plumbing Services

Plumbing issues, such as leaks, clogged drains, and broken pipes, can cause significant water damage if not addressed promptly. Professional plumbers can handle installations, repairs, and maintenance for sinks, toilets, showers, and water heaters. Routine plumbing inspections can also help detect potential problems before they escalate.

2. HVAC Maintenance and Repair

Heating, ventilation, and air conditioning (HVAC) systems play a crucial role in home comfort. Regular servicing of HVAC systems ensures they run efficiently, reduce energy costs, and improve indoor air quality. Professionals can clean ducts, replace filters, and fix any issues with furnaces or air conditioning units to prevent breakdowns.

3. Electrical Services

Electrical problems can be dangerous and should always be handled by licensed electricians. Services include wiring installations, fixing circuit breakers, upgrading panels, and installing lighting fixtures. Regular electrical inspections help prevent potential fire hazards and ensure your home’s electrical system is up to code.

4. Roofing Services

The roof is one of the most critical parts of a home, protecting it from the elements. Professional roofing services include repairs, inspections, and replacements. Regular maintenance helps detect leaks, damaged shingles, and structural issues that can lead to costly repairs if ignored.

5. Pest Control Services

Pests such as termites, rodents, ants, and cockroaches can cause serious damage to a home and pose health risks. Professional pest control services help identify infestations and provide safe, effective solutions. Regular pest inspections can prevent future infestations and keep your home pest-free.

6. Lawn Care and Landscaping

A well-maintained lawn enhances curb appeal and increases property value. Lawn care services include mowing, fertilizing, aeration, and weed control. Professional landscapers can also design and maintain outdoor spaces, install irrigation systems, and provide seasonal care to keep your yard looking pristine.

7. Home Cleaning Services

Keeping a home clean requires time and effort. Professional cleaning services offer deep cleaning, carpet cleaning, window washing, and specialized services such as mold removal. Hiring a cleaning service helps maintain a hygienic and healthy living environment, especially for those with allergies or respiratory issues.

8. Foundation and Structural Repair

The foundation is the backbone of a home, and any issues should be addressed immediately. Signs of foundation problems include cracks in walls, uneven floors, and doors that don’t close properly. Professional foundation repair services can assess structural integrity and provide necessary repairs to prevent further damage.

9. Security System Installation and Maintenance

Home security is essential for protecting your family and property. Professional security services include installing alarm systems, surveillance cameras, smart locks, and motion detectors. Regular maintenance ensures these systems function properly, providing peace of mind for homeowners.

10. Appliance Repair and Maintenance

Household appliances such as refrigerators, washers, dryers, and dishwashers require regular maintenance to function efficiently. Professional appliance repair services can diagnose issues, perform repairs, and extend the lifespan of your appliances, saving you money on replacements.

Conclusion

Homeownership comes with ongoing maintenance and occasional repairs. Knowing which essential home services to rely on can help prevent costly issues, improve efficiency, and enhance overall home comfort. Whether it’s routine maintenance or emergency repairs, professional services ensure your home remains safe, functional, and in excellent condition.

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