BS 9251 is the main British Standard covering fire sprinklers in this country. BS 9251 gives guidance for the design, installation, components, water supplies and back flow protection, commissioning, maintenance and testing of fire sprinkler systems installed for life safety purposes with additional benefits for property protection in residential and domestic occupancies.
The actual conception of a fire sprinkler system was considered by an English inventor, Sir William Congreve, back in 1812. However the world would have to wait until 1874 until the first automatic fire sprinkler system was fitted by American Henry S. Parmalee. Since then fire sprinkler systems have developed, evolved and become more standardised especially in terms of their design, installation and commission.
Taking many aspects from the long established American NFPA fire design codes significant inroads were made in the UK fire sprinkler market with the publication of a full set of British Standards for fire sprinklers in 2004 and 2005. After some 18 months of deliberation these were updated to become BS9251 : 2014. Which came into force on the 31/10/14. There were noticeable changes throughout with a greater emphasis on consultation with Authorities Having Jurisdiction (AHJ’s) to asses risk, run times and design/ discharge density. Previously there were 2 categories of Domestic, and Residential. This became 3 categories numbered 1-3 (see below). Each system is bespoke to the risks including building design or intended inhabitants.
Specifically for domestic and residential fire sprinkler installations. This standard sets the minimum requirements for the design, installation and commission of a fire sprinkler system.
BS 9251 specifies the design, installation, components, water supplies and backflow protection, commissioning, maintenance, and testing of fire sprinkler systems installed in residential and domestic premises. BS 9251 is applicable for sprinkler protection of domestic and residential premises and contains specific recommendations for sprinkler systems in those premises of more than four stories or above 18 m in height, whichever is the lower.
Note: In buildings where there is a mix of both residential, non-residential and commercial use, it is generally appropriate to protect the residential parts using BS 9251 and the non-residential parts using BS EN 12845.
Covers: Single family dwelling such as individual dwelling house, individual flat / maisonette / transportable home. Houses of multiple occupation (HMO’s). Bed and breakfast accommodation / boarding house. Blocks of flats 18m or less in height and maximum total floor area of less than 2400m2.
Covers: Blocks of flats less than18m in height, small residential care premises with 10 or less residents and sheltered and extra care housing.
Covers: Residential care with more than 10 residents, dormitories (educational) and hostels.
Covers: Blocks of flats 18m and above.
BS 9251 is the only design standard which Ultrasafe apply for domestic and residential properties which have a pump and tank fire sprinkler system or town mains water fed sprinkler system.
04-02-2025
What Triggers Fire Sprinklers? Fire sprinklers are activated by heat, not smoke. Each sprinkler head contains a small frangible glass bulb filled with a special liquid. When the surrounding air reaches a specific temperature, this liquid expands, causing the glass to break and releasing water to suppress the fire. Typical...
Read More25-02-2022
What is the approximate cost of a fire sprinkler system? We are often asked ‘How much does a Fire Sprinkler System cost?’ Of course it is very difficult to answer without knowing more details of the project. However we recognise that it is difficult to make the decision to seriously consider...
Read More10-10-2020
There are two British Standards for sprinkler systems in operation: BS 9251:2021 – Sprinkler Systems for Residential and Domestic Occupancies. (formerly BS 9251: 2014) BS EN 12845:2004 – Fixed Fire Fighting Systems. Automatic Sprinkler Systems. Design, Installation and Maintenance. If you would like to read more about BS 9251 or read more about the product requirements for...
Read More25-03-2025
Compliance with BS 9991:2024 and Mandatory Sprinklers Fire safety regulations in England are evolving to enhance protection for residents in vulnerable environments, particularly in care homes. As of 2 March 2025, all new care homes in England will be required to install sprinkler systems, regardless of their height or size....
Read More05-03-2025
Why Professional Fire Sprinkler CAD Design is required for BS Compliance Fire safety is a critical aspect of building design, and ensuring a fire sprinkler system is both effective and compliant with British Standards is essential. Here at Ultrasafe Fire Suppression, we specialise in professional CAD (Computer-Aided Design) services to...
Read More13-12-2024
Why Fire Sprinkler Servicing is Essential for Safety Fire safety is a legal and moral responsibility for property owners and managers, particularly in multi-occupant buildings and residential dwellings. Regular servicing of fire sprinkler systems is not just a compliance measure; it’s a critical safeguard for lives and property. At Ultrasafe...
Read MoreUltrasafe, Unit 1, Bowling Corner, Marley Ln, Battle, UK, TN33 0RE
U2 Farriers Court, Horsefair Green, Thorne, Doncaster, South Yorkshire, UK, DN8 5EE
Simply complete our form below and we’ll get in touch very soon to answer your enquiry.