Warehouse sprinkler systems in Kettering
Warehouse sprinkler systems installed, serviced and checked against your racking and stock, to BS EN 12845 and the LPC Rules, with tanks and pumps.
- ISO 9001, the certification insurers look for
- BS EN 12845 · LPC Rules
- Free survey, fixed price in writing, no travel charge
What is different about warehouses and distribution
Warehouse sprinkler systems usually need another look after new racking, a change of stock, an insurer asking questions, or when a unit has outgrown the system it was built with. Sentry Sprinkler Protection installs and services sprinkler systems for warehouses and distribution, to BS EN 12845 and the LPC Rules. A warehouse sprinkler system is designed around what you store and how high you stack it, not around the floor area. That is why the same shed can be compliant one year and under-designed the next without a single pipe being touched: the racking went up, or the stock changed, and the hazard classification moved underneath it.
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Hazard classification is the whole design
Ordinary Hazard 1 to 4, or High Hazard for storage. It sets the density the system has to deliver and the water supply behind it. Raising storage height or changing what you store can move you up a class, and the system does not move with you.
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In-rack sprinklers change the job
Above a certain storage height, roof-level protection alone will not do it and sprinklers go inside the racking. That changes the pipework, the water demand and what happens every time the racking layout is altered.
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Clearance below the heads
The commonest fault we find, and the cheapest to fix. Stock stacked into the clearance zone stops the spray pattern developing, and a system that cannot wet the floor is not doing what it was designed to do whatever the certificate says.
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The insurer is usually stricter than the law
For warehousing, the binding constraint is almost always the policy rather than Approved Document B. That is worth knowing before a renewal rather than during one.
What we do for these buildings
- BS EN 12845 and BS 9251 Design and installation New systems, extensions and upgrades, designed, installed and commissioned. Fire sprinkler installation
- BS EN 12845 Sprinkler servicing The full BS EN 12845 routine, from the weekly gauge and alarm check to the annual service. Fire sprinkler servicing
- BS EN 12845 Sprinkler tanks The water supply behind the system, inspected, cleaned and replaced when it is past it. Sprinkler tank maintenance
- BS EN 12845 Fire pumps Electric and diesel sets proved under flow, not just started and signed off. Fire pump servicing
From first call to certificate
Four steps, the same on every job.
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01Free survey
We look at the building and its records, and tell you what it is due.
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02Fixed price in writing
Every item priced line by line. No survey fee, nothing added afterwards.
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03The work, on your dates
Isolation agreed before anyone arrives, kept as short as the job takes.
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04Certificate and record
A certificate and a photographed defect list, ready for your insurer.
- Start
Book the free survey
Tell us the building. We will tell you what it is due.
Book a free survey
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.
Mon to Fri, 7am to 5pm. Emergencies any hour.
Request received
We’ve got it from here.
Step 1 of 5 is done. Here is how the rest goes.
- Request sent Done
- 2 We call you Next
- 3 Free survey
- 4 Fixed price
- 5 Work done
Warehouses and distribution: questions
We have raised our racking. Does the system still cover it?
Possibly not, and this is the single commonest reason a warehouse system stops being compliant without anybody touching it. Storage height feeds directly into the hazard classification, and a system designed for a lower stack can be left under-designed by a racking change alone. It is a survey question rather than a paperwork one: we measure what is there now against what the system was designed to deliver.
Do we need sprinklers inside the racking?
It depends on the storage height, what is stored and the roof height above it. Past a certain point, roof-level protection cannot get water down into the stack fast enough and in-rack sprinklers become the practical answer. It is a design decision made from the actual racking layout, which is why we want to see it rather than a floor plan.
Our unit is being re-let to a different tenant. What changes?
Potentially the hazard classification, which is the thing that matters. A unit that held furniture and now holds aerosols or plastics is a different fire risk with the same pipework in the roof. A change of use is the right moment to check the design, because it is the moment an insurer will.
How disruptive is servicing a live distribution centre?
Less than most people expect if it is planned. The weekly and monthly checks are non-intrusive. The work that needs isolation is the annual, and on a building with zone valves that can be taken a section at a time, out of hours, so the floor keeps running. We agree the isolation plan before the visit rather than on the day.
Worth reading first
- Sprinklers Sprinklers in warehouses: why racking changes everything A warehouse sprinkler system is designed against a specific storage height, storage arrangement and commodity class. Raising the racking, changing what is stored or adding racking under a roof-only design can leave the system unable to control a fire it was never designed for.
- Compliance What your insurer actually wants from a sprinkler system Insurers price a sprinkler system as risk mitigation only if they can trust it. Who installed it, what it was designed to and an unbroken maintenance record are what make it count.
- Sprinklers How often should sprinklers be serviced? Under BS EN 12845, sprinklers are checked weekly by the site, checked monthly for water and fuel, tested quarterly, given an interim contractor service every six months and a full service once a year, with the pump proved under flow.
The published documents behind this page
Every interval and threshold on this page comes from one of these. Links go to the publisher, not to a copy of the document.
- BS EN 12845Fixed firefighting systems. Automatic sprinkler systems. Design, installation and maintenance
The standard commercial and industrial sprinkler systems are designed, installed and maintained to. It sets the weekly, monthly, quarterly and annual routines.
BSI
- LPC RulesLPC Rules for Automatic Sprinkler Installations, incorporating BS EN 12845
The insurer-facing ruleset that sits alongside BS EN 12845. Part 1 is the standard itself; the technical bulletins in Part 2 are what an insurer means by property protection.
Fire Protection Association
British Standards are copyright documents and most are bought rather than read free. We hold the ones we work to. If you need to know what one of them says about your building, ask us rather than buying it.
A warehouse sprinkler system, in 3D
Roof heads, in-rack sprinklers on two levels, the tank and the pumps. Start a fire low in the racking and watch the system deal with it.
Illustration only. Not a design.
- The bulb over the fire bursts at 68°C. Only that head opens.
- Water moves through the valve set: the gong rings and the flow switch raises the alarm.
- The pressure drops and the fire pump starts.
- Water reaches the open head and the spray holds the fire back.
- The fire is held in check until the brigade arrives.
- The brigade connects to the riser and takes water to the fire floor.
- With no sprinklers, nothing acts on the fire until the brigade arrives.
Drag to turn it. Ctrl + scroll to zoom. Click any part to see what it is.
Your system
What it needs
- Weekly tank level check, pump start test, alarm motor test, system checks
- Quarterly flow switch and alarm test
- Annual tank inspection and clean, pump performance test under flow, valve set strip, clean and rebuild, full service
Illustration only. This model shows how a fire sprinkler system works. It is not a design for any real building, and the layout, pipe sizes, head spacing, water supply and riser positions in it are not the ones your building would need. Every real system is designed for its building after a survey, to BS EN 12845, BS 9251 or BS 9990.
Certified, and audited on a schedule.
ISO 9001, certified by BRE Global and accredited by UKAS. Somebody independent audits how every job is planned, recorded and signed off, on a schedule.

ISO 9001:2015
Certified by BRE Global, accredited by UKAS
An audited quality management system. It means the way a job is planned, recorded and signed off is itself inspected by somebody independent, on a schedule.
Working to BS EN 12845, BS 9251 and BS 9990. If your insurer or fire risk assessor wants the certificates themselves, ring us and we will send them over.
5.0 on Google
3 reviews, and every one of them five stars.
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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
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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
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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
Tell us the building. We will tell you what it is due.
No survey fee to find out where you stand. Describe the site and we will tell you which intervals apply and what the visit involves.
Request received
We’ve got it from here.
Step 1 of 5 is done. Here is how the rest goes.
- Request sent Done
- 2 We call you Next
- 3 Free survey
- 4 Fixed price
- 5 Work done
