Fire compartmentalisation in a distribution centre divides the building into separate fire zones using walls, floors, and certified fire-rated doors. If a fire starts in one zone, the compartment boundaries contain it long enough for evacuation and emergency response, preventing the fire from spreading throughout the entire facility.
For distribution centres specifically, compartmentalisation is not optional. It is a structural requirement under European and national building regulations, and it directly determines which fire resistance class the doors and walls within the building must achieve. Insurers also use compartment boundaries to assess risk and set coverage terms.
The sections below answer the most common questions about how fire compartmentalisation works in practice, from legal requirements and compartment sizing to door types, certification, and documentation.
What are the legal requirements for fire compartmentalisation in a distribution centre?
Fire compartmentalisation in distribution centres is governed by national building codes that implement European fire safety standards. In the Netherlands, the BBL (Besluit Bouwwerken Leefomgeving, formerly the Bouwbesluit) sets the absolute minimum requirements for compartmentalisation in industrial and logistics buildings. Comparable frameworks apply across the EU, each referencing EN 13501-2 for fire resistance classification and EN 1634-1 for door performance testing.
The core legal obligation is straightforward: a distribution centre must be divided into fire compartments that limit the spread of fire and smoke. The specific requirements depend on the building’s intended use, its total floor area, the number of storeys, and whether it is sprinklered. A building without a sprinkler system will face stricter compartment size limits than one with active suppression installed.
It is important to understand that the BBL sets only the floor — the absolute minimum. A heavier fire classification than the BBL baseline may be required for several reasons: the project deviates from standard building regulations; a sector-specific regulation such as PGS15 (for chemical storage) mandates a stricter classification; the client or principal sets an above-statutory requirement; or the insurer requires a stricter standard as a condition of coverage. Which classification actually applies to a specific project depends on a project-specific fire safety calculation, not on a single fixed rule. For a definitive answer, consult a qualified fire safety engineer or contact Metacon-Next directly.
Compliance must be demonstrable. That means the fire-rated doors and walls installed in the building must carry valid certification, and that documentation must be available for inspection by the building authority, fire service, and insurer. A door that performs well but lacks the correct classification report does not satisfy the legal requirement.
For architects and project managers specifying products, working with a manufacturer that publishes its certification openly is a practical safeguard. Metacon-Next makes all classification reports, test certificates, and EPDs publicly available, which removes ambiguity at the specification stage and during inspections.
How large can a fire compartment be in a distribution centre?
In the Netherlands, the maximum permitted floor area for a single fire compartment in an industrial or logistics building is generally 2,500 m² without additional fire safety measures. With a certified sprinkler system installed, this limit can be extended significantly — in some cases up to 10,000 m² or more — depending on the building category and the applicable regulatory route.
These limits exist because the size of a compartment directly affects how long emergency services have to respond before a fire becomes uncontrollable. A smaller compartment buys more time and limits the total loss in the event of a fire. Insurers are acutely aware of this relationship and will often require compartment sizes below the legal maximum as a condition of coverage for high-value stock.
Determining exactly how large a compartment may be in a specific distribution centre is not straightforward. The relevant Dutch standards — NEN 6060 and NEN 6079 for general compartmentalisation sizing — involve calculations that depend on the specific building configuration, occupancy, and fire safety measures in place. These are not simple formulas, and the outcome depends on a project-specific fire safety calculation carried out by a qualified fire safety engineer. If your project involves equivalence calculations or deviations from the standard compartment limits, seek specialist advice rather than relying on general guidance.
Distribution centres present a particular challenge because the operational logic of logistics — large open floor plates, high racking systems, and wide vehicle access openings — works against the principle of subdivision. This is precisely why the fire-rated doors used at compartment boundaries in these buildings must be capable of spanning large openings while still achieving the required fire resistance classification. Standard residential or light commercial fire doors are not designed for this environment.
Which fire resistance classification is required for doors between compartments?
The fire resistance classification required for doors between compartments in a distribution centre depends on the compartment boundary type and the building regulations applicable to the project. The correct classification system for fire-resistant doors is defined under EN 13501-2, which produces the E, EW, EI1, and EI2 codes combined with a duration in minutes.
Understanding what these codes mean is essential for correct specification:
- E (integrity) — the door prevents flames and hot gases from passing through.
- W (radiation reduction) — the door additionally limits radiant heat transfer through the door leaf. EW is the Dutch standard baseline classification for fire-resistant industrial doors.
- EI1 (insulation, stricter criterion) — the door limits the temperature rise on the unexposed side to a lower threshold. This is the stricter insulation criterion.
- EI2 (insulation, less strict criterion) — the door limits the temperature rise on the unexposed side, but a higher temperature rise is permitted compared to EI1.
- The number (30, 60, 90, 120, 240) — the number of minutes of guaranteed performance under standardised fire test conditions per EN 13501-2.
Always specify EI1 or EI2 explicitly — never use “EI” alone without the suffix, as the two criteria represent meaningfully different performance levels.
EW60 is the typical Dutch baseline classification for many industrial door applications, meaning the door blocks flames and limits radiant heat transfer for 60 minutes. EI2-60 is a common and fully valid alternative, providing integrity and insulation (less strict criterion) for 60 minutes. Heavier classifications such as EI1-60, EI2-90, or EI1-120 may be required depending on the compartment boundary, the building’s fire safety calculation, or requirements set by sector regulation, the client, or the insurer.
Which classification is actually required for a specific project cannot be determined from general guidance alone — it depends on the project’s fire safety calculation. Do not assume that a particular classification is universally required or universally sufficient for distribution centre applications. Consult a qualified fire safety engineer or contact Metacon-Next directly for project-specific guidance.
When specifying doors for a logistics or industrial project, always verify that the classification report matches the required class exactly, including the test standard, the door dimensions tested, and any limitations noted in the certificate. Metacon-Next’s fire-rated door range covers EW and EI1/EI2 classifications across multiple duration classes and product types, including openings that exceed the size limits of standard certified products.
What types of fire-rated doors are used in distribution centres?
Distribution centres use several types of fire-rated industrial doors depending on the opening size, operational requirements, and the compartment boundary they serve. The most common types are fire-rated roller curtains, roller doors, sectional overhead doors, sliding doors, and pedestrian doors. Each type is suited to different situations within the building.
- Fire-rated roller curtains are widely used for large vehicle access openings. They can span wide and tall openings and are typically gravity-fail-safe, meaning they close automatically when triggered by a heat or smoke detector without requiring power. Metacon-Next’s RGT range covers EW 60 up to EI2-120 and EW 120 depending on the model.
- Fire-rated roller doors (steel construction) suit openings where a more robust door leaf is required. The RGS range covers EW 60 through EW 240 and includes EI1-30 / EI2-60 insulated variants.
- Sectional overhead doors are used where a combination of thermal insulation, airtightness, and fire resistance is required — for example at loading docks that also form part of a compartment boundary. The OHD-C range covers EI1-60, EI2-90, EW 90, and EI1-120.
- Sliding fire doors suit openings where the door cannot swing into either space, such as internal pedestrian or forklift corridors between compartments. The SGC EI1-60 / EW 120 is available for single-leaf openings up to 25 m².
- Pedestrian fire doors are used for personnel access points within compartment boundaries. The LD Pro range covers EI1-60, EI2-120, and EW 240 in single- and double-leaf configurations.
All of these door types must be manufactured to fit the specific opening dimensions and achieve the required fire resistance classification. Off-the-shelf products rarely accommodate the opening sizes found in modern distribution centres, which is why working with a manufacturer that produces to specification is essential for these projects.
How does a fire-rated door actually stop a fire from spreading?
A fire-rated door stops fire from spreading through the mechanisms its classification describes: integrity, radiation reduction, and — where the EI1 or EI2 classification applies — insulation. The door’s construction, its steel or composite panels, intumescent seals, and frame assembly, creates a physical barrier that resists the passage of flames and hot gases. Where an EW or EI classification is achieved, the door additionally limits how much heat reaches the unexposed side, reducing the risk of ignition in the adjacent compartment.
The intumescent seals fitted around the door perimeter are particularly important. These seals expand when exposed to heat, filling any gaps between the door leaf and the frame that would otherwise allow smoke and flames to pass through. Without functioning intumescent seals, even a structurally intact door can fail to meet its classification in a real fire.
Automatic closing mechanisms are equally critical. A fire-rated door that is propped open provides no compartmentalisation at all. In distribution centres, where doors are frequently operated by forklifts or vehicles, the closing mechanism must be robust enough to function reliably after years of operational use. This is why industrial fire doors are tested not only for fire resistance but also for operational durability under EN 1634-1 conditions.
Passive fire protection works silently in the background until it is needed. Unlike sprinklers or alarms, a fire-rated door requires no activation signal to do its job. It simply closes and holds. This reliability is the foundation of the entire compartmentalisation strategy in a distribution centre.
What documentation is needed to prove a fire door meets certification requirements?
To prove that a fire-rated door meets certification requirements, the following documentation must be available: a test report issued under EN 1634-1, a classification report issued under EN 13501-2, a Declaration of Performance (DoP) under the EU Construction Products Regulation (CPR), and the CE marking documentation for the product. For industrial fire doors, CE marking is governed by two standards simultaneously: EN 16034 (fire and/or smoke resisting closing element) and EN 13241 (industrial door, general). Both apply and must not be treated as interchangeable or alternatives to one another. For projects targeting BREEAM or LEED certification, an Environmental Product Declaration (EPD) may also be required.
The test report confirms that a specific door construction was physically tested in a certified laboratory and achieved the stated fire resistance classification. The classification report translates those test results into the EW, EI1, or EI2 designation with the appropriate duration. The Declaration of Performance links the specific product being supplied to those test and classification results. Together, these documents form the evidence chain that a building inspector, insurer, or certifier will examine.
A common problem in practice is that suppliers provide a CE mark or a product datasheet without making the underlying test and classification reports available. This leaves the specifier or project manager unable to verify that the door they are installing actually matches the tested configuration. Dimensions, glazing area, hardware, and frame construction all affect whether a door’s real-world installation falls within the scope of the original test.
Transparency at the documentation level is not a regulatory requirement for manufacturers, but it is a meaningful indicator of quality and accountability. Metacon-Next publishes its full certification documentation — including Efectis classification reports, CE certificates, and EPDs — openly on its website. For architects and project managers who need to verify compliance quickly and without back-and-forth correspondence, this approach removes a significant source of project risk. If you are specifying fire doors for a distribution centre and want to confirm the documentation covers your specific opening requirements, you can contact Metacon-Next directly or request a project quotation through the dealer network.
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