BS EN 12845: Retail Stockroom Shelving Rules

If a fire risk assessment or an insurer's survey has just flagged your stockroom shelving, you're not imagining it — it's one of the most common findings on retail back-of-house visits, and most retailers have never heard of the rule behind it. It comes down to a British/European standard called BS EN 12845, and it has a direct, practical requirement for the shelving in any stockroom protected by a sprinkler system.

What BS EN 12845 actually requires from shelving

BS EN 12845:2015+A1:2019 is the UK and European standard for the design of automatic sprinkler systems. Under clause P.7.2 (Shelving), single and double row shelved racks have to meet one of two tests to count as "open" rather than solid shelving: slatted shelves with open areas of at least 50% of the shelf plan area, uniformly spaced no more than 0.15m apart; or grated/mesh shelves meeting the same 50% open area and 0.15m spacing. Miss both tests and the shelving is treated as solid — which changes the sprinkler design requirements for the whole area it sits in, not just that one bay.

The reasoning is straightforward once you see it: a sprinkler system is designed around water reaching the stock it's protecting. Solid shelves block that water. A stockroom fitted with the wrong shelving can mean the sprinkler system underneath it was never actually designed for the risk it's covering — regardless of how good the sprinklers themselves are.

Why retail stockrooms trip this rule more than most

This catches out retail more than most sectors, for a simple reason: stockroom and back-of-house shelving usually gets bought for capacity and budget, not compliance. Chipboard shelves, solid steel shelves, and off-the-shelf boltless units are all common choices for stockrooms precisely because they're cheap and strong — and every one of them fails the open-shelf test outright. Nobody's cutting corners on purpose; the standard simply isn't on most buyers' radar until an assessor or insurer raises it.

It's also worth knowing where this rule actually comes from in practice. Fire risk assessors and insurance surveyors in the UK typically work from the LPC Rules for Automatic Sprinkler Installations — the insurer-industry document (published via RISCAuthority) that incorporates BS EN 12845 for UK use. That's the paper trail behind "policed by insurance companies": it's not a vague industry expectation, it's a specific clause in a specific document that a surveyor can point to on a site visit.

For multi-site retailers, this is worth checking proactively rather than site by site as issues get raised. If one stockroom in your estate has been fitted with solid shelving, there's a good chance others have too — and fixing it after a formal finding is always more disruptive than fixing it on your own schedule.

Quick checklist: is your stockroom shelving compliant?

• Are your shelves slatted, or grated/mesh — not solid chipboard or sheet steel?
• Is the open area at least 50% of the shelf's total plan area?
• Are the gaps or mesh openings spaced no more than 0.15m (150mm) apart?
• Has this been checked room by room, not assumed from one "typical" bay?
• If a surveyor or assessor has already flagged shelving as non-compliant, has it actually been replaced, or just noted for "next time"?

If you answered no, or aren't sure, to any of those, it's worth getting it checked before it turns up as a finding rather than after.

Choosing compliant stockroom shelving

Ironstor's Perforated Shelf is designed in-house by Rackline specifically to meet BS EN 12845's open-shelf test — we're the only UK manufacturer of this product. It's built to fit our Profile Shelving systems, rated to 35kg per shelf level (see our full guide to shelf load capacity ratings for how that compares across our range), and comes with the same 6-year warranty as the rest of our shelving. It's in stock now, with a 1-2 week lead time.

It's part of our wider Retail Shelving range, built for stockroom and back-of-house storage more generally — so if compliant shelving is only part of what you need to sort out (mixed capacity, different bay sizes across sites, staff belongings storage), it's worth looking at the range as a whole rather than solving this one issue in isolation.

Every Ironstor product is manufactured to order at Rackline's own factory in Stoke-on-Trent, Staffordshire — ISO 9001 certified, Constructionline Gold, Safecontractor and CHAS accredited — so a compliance fix doesn't have to mean a compromise on the rest of your stockroom fit-out.

If you're not sure whether your current stockroom shelving would pass the open-shelf test, or you need a second opinion before your next fire risk assessment or insurance renewal, get in touch with our team — we're happy to talk through what you've currently got and what, if anything, needs to change.

BS EN 12845:2015+A1:2019 clause P.7.2 is cited directly from the standard's own published text. The LPC Rules for Automatic Sprinkler Installations are published by RISCAuthority and incorporate BS EN 12845 for UK insurance-industry use.