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Commercial sprinkler installation in Hertfordshire

Commercial sprinkler installation in Hertfordshire to BS EN 12845 and BS 9251: offices, conversions and industrial units, designed, installed and commissioned.

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Sprinkler mains under the steel frame of an industrial unit, the kind of work commercial sprinkler installation in Hertfordshire involves
Sprinkler mains going in during an industrial fit-out, photographed on one of our jobs.
  • ISO 9001, the certification insurers look for
  • Free survey, fixed price in writing, no travel charge
  • Office Monday to Friday, 7am to 5pm; emergency line any hour

Commercial sprinkler installation in Hertfordshire usually starts with an office fit-out, an office being converted into flats, or an industrial or logistics unit whose insurer wants protection the building does not have. We design, install and commission fire sprinkler systems to BS EN 12845 for commercial and industrial buildings and BS 9251 for residential parts, then hand over the drawings and certificates that prove them. St Albans and Watford are our regular Hertfordshire stops, 47 and 53 miles from our base. Sentry Sprinkler Protection does this work across England from its base in Kettering, ISO 9001 certified.

Offices and office fit-outs

In an office, the sprinklers share the ceiling void with ductwork, lighting and cable trays, so the design is coordinated with the other trades before anything is fixed. A new layout of partitions or a raised ceiling can also move heads, which is why a fit-out is the right moment to check an existing system against BS EN 12845 rather than after the tenant has moved in.

Sprinkler pipework running with ductwork and services across a ceiling during a fit-out

Offices converted into flats

Much of the county's office stock has been converted into flats. Once a building becomes residential, the residential parts are normally designed to BS 9251, and a block over 11 metres is expected to have sprinklers under Approved Document B. We design the sprinklers to work with the building's riser and fire strategy, and note where an older record no longer matches what is installed.

Industrial and logistics units

For warehouses and industrial units, the insurer usually sets the requirement long before Building Regulations do. Storage height and the goods stored decide the design, so a change of racking or of tenant can mean in-rack protection or a redesign rather than a few extra heads.

Red in-rack sprinkler pipework running through tall warehouse racking

From survey to handover

  • A free survey of the building, the water supply and what the insurer or the fire strategy requires.
  • A design and a fixed price in writing.
  • Installation planned around your programme or your tenants, on our St Albans and Watford runs.
  • Flushing, pressure and flow tests and commissioning, then drawings and certificates at handover.

Design and installation, on our jobs

31 photographs of this exact work, from the owner's own sites. Tap any of them.

The full gallery
  1. SurveyFree, and we walk the building
  2. Fixed priceIn writing, with the standard named
  3. First visitDone, recorded and certificated

or call 07927 555475

Installation, filmed on our jobs

Short clips from our own sites, as the pipework went in. No stock footage.

  • Our job

    A sprinkler main going onto its hangers

    Filmed from the scissor lift: a length of main lifted onto its hangers under a mezzanine.

  • Our job

    Before the ceiling goes in

    An office floor with the pipework complete and open to view, before the ceiling closes it in.

  • Our job

    Sprinkler mains along a warehouse roof

    The mains fixed along the roof steelwork, with the range pipes running off them.

Related

From first call to certificate

Four steps, the same on every job.

  1. A sprinkler layout drawing marked up on site during a survey
    01

    Free survey

    We look at the building and its records, and tell you what it is due.

  2. A sprinkler installation drawing open on a laptop on site
    02

    Fixed price in writing

    Every item priced line by line. No survey fee, nothing added afterwards.

  3. An engineer installing sprinkler pipework from a scissor lift
    03

    The work, on your dates

    Isolation agreed before anyone arrives, kept as short as the job takes.

  4. A bank of sprinkler alarm valve sets with gauges in a plant room
    04

    Certificate and record

    A certificate and a photographed defect list, ready for your insurer.

  5. Start

    Book the free survey

    Tell us the building. We will tell you what it is due.

    Book a free survey

What you have in your hands when we leave

The system working is not the whole job. This is the file your insurer and building control ask for.

Book a free survey

  • The hydraulic calculations

    The design proved on paper: what the system needs and what the supply gives.

  • The as-fitted drawings

    The pipework as it was actually installed, not as it was first drawn.

  • The flow test results

    The water supply measured, with the figures.

  • The commissioning certificate

    With the servicing schedule, so the record starts on day one.

Free survey · fixed price in writing

Tell us what you need. We will tell you what it takes.

Four quick taps and your details. A free survey and a fixed price in writing, with no survey fee and no obligation.

Call 07927 555475

Mon to Fri, 7am to 5pm. Emergencies any hour.

What do you need?

Pick one. The next questions follow from it.

What kind of building is it?
How tall is the building?
What is happening?
Which part needs looking at?
Where is the project?
When is it due?
How soon do you need us?
Who do we ring back?

Usually the same working day. We never share your details.

No survey fee, no obligation. ISO 9001:2015 certified.

5.0 on Google

4 reviews, and every one of them five stars.

Read them on Google
  • Lewis W. Sprinkler installation, warehouse

    Had them install a full sprinkler system across one of our warehouses, and couldn't be happier. They were professional from start to finish and the on-site team were genuinely friendly to work with. […] Highly recommend if you would need your building or warehouse properly fire-protected.

    5 stars on Google

  • Mike C. Weekly maintenance, testing and repair

    Sentry Sprinkler Protection have recently taken over the weekly maintenance, testing and repair of the […] sprinkler equipment. They are providing a excellent service, good value and they are also very helpful when on site.

    5 stars on Google

  • Sam E. Sprinkler pipework installation

    Couldn't recommend [Sentry] enough. Their work ethic, consistent efficient install of the pipework and overall approach to a project should be something every sub-contractor strives to mirror. Marius is incredibly approachable and methodical in his work with laydown areas kept very neat and tidy and all work carried out in a safe manner.

    5 stars on Google

Questions about commercial sprinkler installation in Hertfordshire

Do you install commercial sprinklers across Hertfordshire?

Yes. St Albans and Watford are regular stops, and installation elsewhere in the county is planned on the same runs. Send the address and we will confirm it before anything is booked.

Which standard will a Hertfordshire office or industrial unit be designed to?

Commercial and industrial buildings are normally BS EN 12845, and residential parts of a mixed or converted building BS 9251. Your fire strategy and your insurer confirm which applies, and we design to that.

Does a Hertfordshire office need its own sprinkler tank and pump?

Only if the mains cannot deliver the flow and pressure the design needs. The supply is tested during the survey, and the answer goes in the written quotation.

What happens when you ring

You talk to Marius Bucur, who runs the company and prices the work. Not a call centre.

07927 555475

Mon to Fri, 7am to 5pm. Emergencies any hour.

Rather type?

  1. A few plain questions

    Usually four: what the building is, what system it has, when it was last serviced and the postcode. If you do not know some of it, that is normal.

  2. A straight answer

    Whether it is a job for us. If a building would be better served by someone closer, we will tell you that too.

  3. A free survey, on your dates

    Then a fixed price in writing, line by line. No survey fee, no obligation, nothing added afterwards.