01892 680 090
how do fire sprinklers work

Domestic Fire Sprinkler System Questions:

  • Does the company self-certify its own installations or is it a member of a third-party certification scheme such as FIRAS?
    ‘FIRAS’ is the certifying authority for domestic fire sprinkler systems. It is UKAS accredited and operates schemes for most areas of fire protection. If a company is FIRAS accredited, then this will provide confidence to specifiers, enforcement authorities, building owners and occupiers that the system has been designed and tested correctly. Ensure that the company is a certified FIRAS contractor and issues a FIRAS certificate on completion of all installations.
  • Does the company specialise exclusively in domestic fire sprinkler systems?
    This is very important as commercial and domestic fire sprinkler systems have very little in common with each other and installers require very different disciplines. It is important to ensure that the company is experienced with this type of system and not just a plumbing company trying to diversify its operations.
  • What sort of staff training does the company provide and does it use sub-contractors?
    A fire sprinkler system is usually incorporated into a project as a compensatory feature to meet building control fire safety requirements.  Once installed, these systems are then equivalence tested using a test point and calculations.  It is essential therefore that it has been installed proficiently and documented meticulously.  A badly installed system will lie undetected until the day it is called upon to save a life.  Ensure the company which you instruct has provided regular on-site training as well as training and registration with the Residential Sprinkler Association or BAFSA.
  • Will I get charged extra if I don’t have full drawings in a full downloadable CAD format?
    Most companies use your drawings on which to overlay their own design. You may be charged extra if you don’t have them in a downloadable CAD format.
  • What pump am I being quoted for?
    If you are being quoted for a storage based system it is essential that it incorporates a fire booster set that has been designed for the purpose and not just a pump installed on the tank outlet. A pump associated with a domestic sprinkler system can lay dormant for months or years on end. This will cause the pump to seize up unless it is turned over regularly. It is important to establish that the pump that you are being supplied will automatically turn over at least every month period.
  • Dedicated fire supply or combined with the domestic supply?
    If any company insists that the sprinkler system can be connected to the town mains water supply via the properties domestic supply rather than utilising a storage system, the following needs to be established: Will the domestic supply be metered? If the answer is yes: You should ask if the installer can guarantee that the domestic water meter will pass at least 100 litres per minute and that the meter manufacturers consider it suitable for use in a fire supply? If the supply is not metered presently, you should ask the installer guarantee that there are no plans by the water undertaker to meter the supply in the future?
  • What extra costs could be imposed on me?
    It is hard to believe but some companies will carry out an installation by first and second fixing in one trip and then charge extra for a second trip! They may also expect to be provided with parking spaces if the installation is in a town or city. One national installation company in particular is very cheap initially but imposes high cost penalties for return visits and a variety of reasons.  Look very closely at the extra costs that could be imposed on you during the course of the contract if the price is low.
  • Does the installation include a fire alarm or is it connected to the smoke alarm?
    A domestic fire sprinkler system should have an alarm associated with it which includes a sounder on an outside wall according to BS9251. If there is no external sounder associated with the sprinkler system there will be no warning that the sprinkler system has activated if there is no-one on the premises – no-one to turn the sprinkler system off after it has extinguished the fire!  If you are being offered a sprinkler system which is connected to a smoke alarm, make sure that there is either an external sounder connected to the smoke alarm system or that the Building Control Officer agrees to the deviation from BS9251.
  • Is it a National or local Company?
    Some companies will price low in order to get the contract. They may travel long distances in order to carry out the initial part of the installation but will then be reluctant to return to sort out any problems that may occur as the project progresses. If your project is in London or the South East of England why instruct a company from the Midlands to carry out the installation?


Liked this blog? Read another one here. Follow us on Facebook for more updates.

Mist system was a great solution for our renovation needs and them team at RAD have been great. Always communicated clearly and been on hand to discuss over the phone as needed. Would highly recommend!
09:32 17 Jul 22
I have used RAD for a couple of projects and found them to be good to deal with. They did a pair of 3 storey open plan houses and seven three and four story town houses. The sprinklers were to improve fire safety, allow more flexible space and comply with building regulations. The sprinklers were far more cost effective than the mist type systems and look very discrete when installed.
Paul Jeary
15:50 11 Jul 22
It has been a pleasure to deal with RAD for installation of fire sprinklers at our site is Sevenoaks. They were fast, professional, working to time and quote, which made it easy to work with them.
Katrina Horobin
12:03 29 Jun 22
My requirement was a bit unusual for RAD in that I wanted a mist system in one room of a rented house. I had no drawings or technical back up. RAD were very helpful and repositioned the unit after the initial installation. Luckily with the help of Sonny, the engineer it all worked out very well.
Simon Gurney
16:16 12 May 22
I have used RAD for the last 10 years for all of my housing developments in need of a sprinkler system. Easy process from start to finish and no issues or problems throughout. Always someone at hand to answer a querie and we have a great working relationship with the team at RAD. Would highly recommend.
15:33 12 May 22
Diligent & a very professional team. A joy to deal with. Will certainly be calling on them to help with many more future schemes.
Jason Tema
22:17 08 Jul 19
Great team, fitting sprinklers, saving lives & property... What more could you wish for!!!
Colin P
17:53 01 Jul 17
Excellent company & great service... This company rocks! They sprinkle fires & save lives!!!
Music N Videoz
07:15 16 Dec 16
As somebody who feels that it should be a necessity for all properties to have fire sprinkler systems, I am a big fan of this company. I have used them numerous times to service my home system and they are very knowledgeable. I would highly recommend their service.
Kate Fraser
09:25 30 Mar 15
One look at Rad Fire Sprinkler's website will tell you that these guys know exactly what they are talking about when it comes to Fire Sprinklers and the legislation surrounding fire safety. A very trustworthy company.
Adam Hudson
16:45 15 Nov 13

Our Services Cover London and the South East

RAD Fire Sprinklers Map


RAD Fire Sprinklers Ltd.
58A St John’s Road
Tunbridge Wells, TN4 9NY

Mon – Fri: 8AM – 5PM

Tel: 01892 680 090

Follow us

Follow by Email


Contact Us

Feel free to enter your details below and we will email our PDF guide to you straight away.
  • Your details will not be shared with anyone outside RAD.