Fire-rated glazing specification in Dubai is one of the most
consequential decisions in any building project — and one of the least
understood by design teams working on their first UAE project. The
requirements are strict, the inspections are thorough, and the
consequences of getting it wrong are measured in months of project
delay, not weeks.
Dubai Civil Defence (DCD) enforces fire safety requirements with an
intensity that surprises architects and contractors accustomed to
European or North American inspection regimes. Every fire door, every
fire-rated glass panel, every smoke seal and intumescent strip is
checked during the building inspection process. If the installed system
does not match the approved fire strategy and the supporting test
certificates, the building will not receive its completion
certificate.
This guide covers where fire-rated glazing is required, what ratings
are needed for different applications, how fire-rated glass actually
works, and the specification details that determine whether your project
passes inspection first time.
Where Fire-Rated
Glazing Is Required in Dubai
The locations requiring fire-rated doors and glass are defined by the
approved fire strategy document for each project, which is prepared by
the fire consultant and approved by Dubai Civil Defence before
construction begins. However, the common locations are predictable:
Stairwell enclosures are the most common
application. Protected stairwells in buildings above 4 storeys require
fire-rated enclosures — every door, every glazed screen, every wall must
achieve the specified fire rating. In Dubai high-rise residential
buildings, this typically means EI60 (60 minutes integrity and
insulation). For buildings above 75m (approximately 23 storeys), the
stairwell enclosure requirements increase and additional provisions such
as pressurised lobbies come into play.
Escape corridors connecting apartments or offices to
the protected stairwell require fire-rated separation from the occupied
spaces. The doors from individual units into the corridor are typically
EI30 (30 minutes), while the corridor walls and any glazed screens
within them may require EI60 depending on the corridor length and
layout.
Floor-to-floor separation is required to prevent
vertical fire spread through the facade. In curtain wall buildings, this
is achieved through fire-rated spandrel panels and floor-edge fire
barriers (sometimes called “perimeter fire barriers” or “linear gap
seals”). These elements must achieve the same fire rating as the floor
slab — typically EI120 in Dubai high-rise construction. (See our article
on curtain wall
specification for more on spandrel zone fire requirements.)
Compartmentation walls separate different occupancy
types within the same building — for example, the wall between a
residential lobby and an adjacent retail unit, or between a car park and
the building core. Glazed screens in these walls must achieve the
compartment fire rating, which is typically EI60 or EI120.
Plant rooms and service areas housing generators,
transformers, switchgear, fuel storage, or waste compactors require
fire-rated enclosures. The rating depends on the specific hazard
classification but is typically EI60 or EI90.
Refuge areas for persons with disabilities are
required in Dubai high-rise buildings. These areas must have fire-rated
enclosures, typically EI60, and are located adjacent to or within the
protected stairwell.
Smoke lobbies and pressurised lobbies serve as an
additional buffer between the occupied floor and the protected
stairwell. The doors between the corridor and the lobby, and between the
lobby and the stairwell, both require fire ratings — typically EI30 for
the corridor door and EI60 for the stairwell door.
Understanding EI Ratings
The EI classification system is straightforward in principle but
frequently misunderstood in practice:
E (Integrity) measures how long the assembly
prevents the passage of flame and hot gases through the barrier. The
test exposes one face of the assembly to a standard fire curve (reaching
approximately 945°C at 60 minutes) and monitors the unexposed face for
flame penetration, sustained flaming, or gaps that would allow hot gases
to pass through.
I (Insulation) measures how effectively the assembly
limits temperature rise on the unexposed face. Even if flames do not
penetrate, a fire-rated barrier must prevent the unexposed face from
reaching temperatures that could ignite materials on the other side or
harm people. The standard limits are 180°C average temperature rise and
220°C maximum at any single point on the unexposed face.
The number following EI indicates the time in minutes: EI30 = 30
minutes, EI60 = 60 minutes, EI90 = 90 minutes, EI120 = 120 minutes.
The critical distinction: some products achieve E
(integrity) ratings significantly longer than their I (insulation)
ratings. A product rated E60/I30 provides flame and gas integrity for 60
minutes but only limits temperature rise for 30 minutes. For locations
where Dubai Civil Defence requires EI60, both the E and I ratings must
reach 60 minutes. Always check that the test certificate confirms the EI
rating for the required duration, not just the E rating.
W (Radiation) is an additional classification that
limits heat radiation through the assembly. EW-rated products prevent
harmful heat radiation levels on the unexposed side — this is relevant
for fire-rated glazed screens where people may be close to the barrier
during evacuation. Some Dubai fire strategies specify EW rather than EI
for glazed screens in escape corridors.
How Fire-Rated Glass Works
Fire-rated glass falls into three main categories, each offering
different levels of protection:
Wired glass (Georgian wired glass) is the
traditional fire-rated glazing material. Steel wire mesh embedded in the
glass holds shattered fragments in place during fire, maintaining
integrity. Wired glass achieves E ratings only — it prevents flame
penetration but provides no insulation. It is also limited in its
acoustic and thermal performance and has an institutional appearance
that is unacceptable in premium projects. Wired glass is increasingly
being replaced by modern alternatives.
Borosilicate glass (also known as pyro glass or
fire-resistant glass) is a heat-resistant glass composition that
withstands thermal shock without shattering. It achieves E ratings
(integrity) for up to 120 minutes but provides limited insulation — the
unexposed surface temperature will rise significantly during extended
fire exposure. Borosilicate glass is suitable for applications requiring
E-only ratings, and it is available in clear, transparent form without
the visual compromise of wired glass.
Intumescent laminated glass is the premium
fire-rated glazing solution and the only option that achieves full EI
ratings. Multiple layers of glass are laminated with intumescent
interlayers — transparent chemical compounds that remain clear under
normal conditions but expand dramatically when heated, forming an
opaque, insulating foam barrier. As the fire-exposed glass layer breaks,
the intumescent interlayer expands and hardens, creating a rigid
insulating shield that blocks both flame and heat transmission.
The number of glass layers and intumescent interlayers determines the
fire rating. A typical EI30 unit uses 2 glass layers with 1 intumescent
interlayer. EI60 typically requires 3-4 glass layers with 2-3
interlayers. EI120 may require 5 or more layers. This has significant
implications for weight (EI60 intumescent glass can weigh 45-55 kg/m²),
thickness (25-45mm for EI60), and cost (5-10× the cost of standard
glass).
The Cortizo Millennium FR Door system is designed to accommodate the
weight and thickness of intumescent glazing within a door assembly that
still achieves the aesthetic standard expected in premium projects. The
system achieves EI260 classification with 60-minute fire resistance —
the “260” refers to the specific test configuration under EN 1634. (For
more on glass types used in Dubai, see our article on laminated vs tempered glass
requirements.)
The Complete Assembly
Requirement
This is the single most important point in fire-rated door
specification, and the one that causes the most inspection failures:
Every component of a fire-rated door must be tested as a
complete assembly. The frame, leaf, glass, intumescent strips,
smoke seals, hinges, lock, handle, closer, and any other hardware must
all be included in the fire test to the required EN 1634 standard. You
cannot substitute a hinge from manufacturer A into a door system tested
with hinges from manufacturer B and claim fire compliance — even if
manufacturer A’s hinge has its own fire test certificate.
The test certificate covers a specific configuration. That
configuration is documented in a “field of application” or “extended
application” report (sometimes called an EXAP) that defines the
allowable variations — maximum door dimensions, maximum glass area,
permitted glass types, approved hardware items, and installation
details. The installed door must fall within the scope of this
document.
What this means in practice: when specifying a
fire-rated door, you specify the complete system from one manufacturer,
including all hardware. The door schedule should name the specific
system (e.g., “Cortizo Millennium FR”), the fire rating (e.g., “EI60”),
the maximum leaf size, the glass type and supplier, the hinge model, the
lock model, the closer model, and the seal configuration. The fabricator
then produces the door exactly as described in the test certificate’s
field of application.
If a client or interior designer wants to change the door handle
after the fire doors are ordered, the new handle must be checked against
the field of application document. If it is not listed as an approved
component, it cannot be used — or a new fire test is required, which
costs AED 50,000-150,000 and takes 3-6 months.
Self-Closing Mechanisms
Every fire door in Dubai must be self-closing. This
is a non-negotiable Dubai Civil Defence requirement. The closer must be
powerful enough to fully latch the door from any open position,
including overcoming the resistance of seals and maintaining positive
latch engagement.
Surface-mounted closers are the most common type.
They are visible on the door face or frame head and provide adjustable
closing speed, latching speed, and backcheck. For fire doors above 40kg
leaf weight, the closer must have sufficient closing force — EN 1154
classification determines this, with strength grades from 1 (lightest)
to 6 (heaviest).
Concealed closers fit within the door leaf or frame
and provide a cleaner appearance. They have a narrower adjustment range
and lower maximum strength than surface-mounted units, which limits
their use to lighter fire doors.
Electromagnetic hold-open devices are permitted on
fire doors in Dubai, provided they are connected to the building’s fire
alarm system and fail to the closed position (meaning the door closes
automatically on power failure or alarm activation). Hold-open devices
are commonly specified on corridor fire doors to maintain day-to-day
accessibility while ensuring automatic closure during fire events.
Floor springs can serve as both the pivot mechanism
and the closer for fire-rated pivot doors. The floor spring must be
fire-tested as part of the door assembly, and its closing force must be
sufficient to fully latch the door.
Smoke Seals
Fire doors in Dubai require both intumescent strips and smoke seals.
These serve different functions:
Intumescent strips are recessed into grooves in the
door leaf or frame. Under normal conditions, they are passive. During
fire, they expand to fill the gap between the door and frame, preventing
flame and hot gas penetration. They activate at approximately
150-200°C.
Cold smoke seals (also called blade seals or brush
smoke seals) provide day-to-day sealing against cold smoke — the toxic,
low-temperature smoke that spreads through buildings before the fire
reaches the door location. Cold smoke is the primary cause of fire
fatalities, and smoke seals prevent its passage through the gaps around
the closed door.
Most Dubai fire strategies require both: intumescent strips for fire
integrity and cold smoke seals for smoke containment. The combination
seal — intumescent strip with integral cold smoke blade — is the most
practical solution and is specified in the majority of fire door
assemblies.
The Inspection Process
Dubai Civil Defence inspects fire doors at multiple stages:
Shop drawing approval: the fire door schedule, test
certificates, and field of application documents are submitted for
approval before fabrication begins. The submission must demonstrate that
every fire door on the project is covered by a valid test report, that
the proposed configuration falls within the field of application of that
test, and that all hardware is compatible with the tested assembly. DCD
reviewers are increasingly technical and will reject submissions where
the test certificate does not explicitly cover the proposed
configuration — “similar” or “equivalent” is not accepted.
Manufacturing inspection: DCD may inspect the
fabrication facility to verify that doors are being produced in
accordance with the approved test configuration. This is not a formality
— inspectors check that the correct profile system is being used, that
intumescent strips match the test specification, that glass is sourced
from the approved supplier, and that hardware is the exact brand and
model listed in the test certificate. Component substitution — even
substituting a “better” product — is grounds for rejection.
Installation inspection: every installed fire door
is checked for correct labelling (fire rating labels must be permanently
attached), correct hardware, correct glazing, correct seals, correct
closer operation, and correct gap dimensions (typically 3-4mm between
leaf and frame, uniform around the perimeter). The inspector will
physically test closer operation, check that the latch engages fully,
and verify that the door closes completely from any open position
without assistance.
Completion inspection: the final building inspection
includes a fire door check as part of the overall fire safety compliance
certificate.
The consequence of failure at any stage is a
“rejection notice” that prevents progress to the next stage. A rejected
fire door installation on a high-rise residential project can delay the
completion certificate by 4-8 weeks — the time needed to order
replacement doors, install them, and schedule a re-inspection. On a
project where apartments are being handed over to purchasers, this delay
has direct financial consequences measured in hundreds of thousands of
dirhams in penalty payments and holding costs.
Ironmongery
Specification: The Detail That Determines Compliance
Fire door ironmongery — hinges, locks, handles, closers, and seals —
is where the majority of specification errors occur because these
components are often specified by a separate ironmongery consultant or
interior designer who may not fully understand the fire certification
constraints.
Hinges must be fire-tested as part of the door
assembly and must be EN 1935 classified for the required fire rating.
For fire-rated aluminium doors, the hinge type (concealed, butt, pivot)
must match the test configuration. The number of hinges per leaf is also
defined by the test — typically three hinges for leaves up to 2,400mm
height, four hinges above 2,400mm. The hinge material matters: steel
hinges are standard for fire doors because they maintain structural
integrity at elevated temperatures. Aluminium or zamak hinges — which
may be specified for aesthetic reasons — can lose strength at fire
temperatures and are generally not accepted for fire-rated applications
unless specifically tested.
Locks and latches must be tested as part of the
assembly and must achieve the appropriate EN 12209 grade. Multi-point
locking is preferable on fire-rated doors because it maintains seal
compression at multiple points around the perimeter, improving both fire
and smoke performance. But the locking mechanism must allow the door to
be opened quickly from inside in an emergency — this is a life safety
requirement that overrides any security preference for complex locking
sequences.
Handles and lever sets seem like a purely aesthetic
choice, but on fire doors they must comply with EN 1906 and must not
prevent rapid emergency operation. Pull handles that require two-handed
operation, push bars that are difficult to operate under stress, or
electronic locks that fail in the locked position are all potential life
safety hazards on fire escape routes.
Letter plates, vision panels, and air transfer
grilles — any penetration through the fire door leaf must be
fire-rated to the same standard as the door itself. A letter plate
opening in a fire door is a route for flame and smoke unless it
incorporates an intumescent liner and a gravity-closing flap. Vision
panels must use fire-rated glass held in fire-rated beading with
intumescent gaskets. Air transfer grilles must incorporate intumescent
dampers that close automatically in fire conditions.
The specification discipline required for fire door
ironmongery is simple but non-negotiable: every component that is
attached to, passes through, or mechanically connected to the fire door
assembly must be listed in the fire test certificate or covered by the
field of application document. If it is not listed, it cannot be used.
If the interior designer specifies a handle set that is not covered by
the test certificate, the options are to find a similar handle from the
tested range, or to commission a new fire test with the desired handle —
which costs AED 40,000-80,000 and takes 8-12 weeks.
Maintaining Fire Doors
After Handover
Fire door compliance does not end at the completion inspection. Fire
doors must maintain their performance throughout the building’s life,
which means ongoing inspection and maintenance:
Quarterly visual inspection by the building’s
facilities management team should check that all fire doors close fully
into the frame without obstruction, that closer mechanisms operate
smoothly and latch the door completely, that intumescent strips and
smoke seals are intact and undamaged, that door gaps are consistent (no
warping, sagging, or frame movement), and that fire rating labels are
present and legible.
Annual detailed inspection should include closer
force measurement (the closer must generate sufficient force to fully
latch the door against the seal compression), hinge condition assessment
(wear, looseness, or misalignment), seal integrity check (intumescent
strips should be continuous with no gaps, cold smoke seals should be
flexible and make continuous contact), and glass integrity check (no
chips, cracks, or delamination in fire-rated glass units).
The most common maintenance failure is propping fire
doors open. Building occupants — and sometimes facilities management
staff — wedge fire doors open for convenience, removing the fire
compartmentation that the entire fire strategy depends on. This is
explicitly prohibited under Dubai Civil Defence regulations and can
result in fines and enforcement action if discovered during a routine
DCD inspection. Where doors need to remain open for operational reasons,
electromagnetic hold-open devices connected to the fire alarm are the
only compliant solution.
Component replacement during the building’s life
must maintain fire certification. Replacing a closer, hinge set, or lock
on a fire door with a non-certified equivalent invalidates the fire
rating of that door. The building’s maintenance specification should
include an approved replacement parts list cross-referenced to the
original fire test certificate, and maintenance staff should be trained
on the importance of using only certified replacement components.
Aluminium vs Steel for
Fire-Rated Doors
The traditional material for fire-rated doors is steel — and steel
remains the most common material for utilitarian fire doors in plant
rooms, stairwells, and service areas. But aluminium fire-rated systems
have become increasingly specified in Dubai premium projects for good
reason.
Steel fire-rated doors are readily available in
standard sizes at competitive prices. They achieve high fire ratings
(EI60, EI90, EI120) with relatively simple construction — a steel skin
over a mineral wool core. The limitation in premium projects is
aesthetic: steel fire doors typically have visible face fixings,
surface-mounted hardware, and a utilitarian appearance that conflicts
with the design language of luxury residential lobbies, hotel corridors,
and premium office developments. Steel doors are also significantly
heavier than aluminium equivalents, which affects closer sizing and
accessible operation.
Aluminium fire-rated doors provide the same fire
ratings as steel but with the slim sightlines, concealed hardware
options, and refined aesthetic expected in premium environments. The
thermal break technology in aluminium fire-rated frames also provides
superior thermal performance compared to steel — critical in facade
applications where the fire door is also an element of the building’s
thermal envelope. The Cortizo Millennium FR system achieves EI60 with Uw
values below 1.5 W/m²·K — a combination that steel fire doors cannot
match without additional thermal break components.
The cost premium for aluminium fire-rated doors over steel
equivalents is typically 40-80%, depending on the fire rating and
glazing specification. For luxury residential, hospitality, and premium
commercial projects in Dubai, the aesthetic improvement justifies this
premium. For back-of-house, plant rooms, and service applications, steel
remains the more cost-effective choice.
Fire-Rated Glazed
Screens and Partitions
Fire-rated glazed screens — fixed glass panels in aluminium or steel
frames — are increasingly specified in Dubai as alternatives to solid
fire-rated walls. They allow natural light penetration through fire
compartments, maintain visual connectivity between spaces, and provide
the transparency that modern architectural design demands.
The specification principles for glazed screens are identical to
fire-rated doors: the complete assembly (frame, glass, seals, fixings)
must be tested to the required EI rating as a single system. The fire
test report defines the maximum panel dimensions, maximum glass area,
minimum frame depth, and fixing details.
Maximum panel sizes for fire-rated glazed screens
are limited by the test configuration. Typical maximum dimensions for
EI60 glazed screens are approximately 1,200mm wide × 3,000mm high per
glass panel, though some systems achieve larger formats. Mullion and
transom spacing must match the tested configuration — wider spacing than
the test report allows is not permitted.
Butt-jointed glazing (glass-to-glass joints without
visible framing) is available in fire-rated configurations using
intumescent joint seals. This provides the frameless aesthetic that
architects prefer for internal glazed walls while maintaining fire
compartmentation. The joint seal expands during fire to prevent flame
and gas penetration at the glass-to-glass junction.
Integration with fire doors — when a fire-rated door
is set within a fire-rated glazed screen, the entire assembly (screen
frame, glass panels, door frame, door leaf, hardware, seals) must be
tested together. You cannot independently test the screen and the door
and then combine them — the interaction between the two assemblies
during fire exposure must be validated by testing the complete
configuration.
The Cost of Getting It Wrong
The financial consequences of fire-rated glazing specification errors
in Dubai are disproportionate to the relatively modest cost of
specifying correctly in the first place:
Rejected inspection: A single rejected fire door
installation delays completion certification by 4-8 weeks. On a
residential tower handing over 200 apartments, the holding cost and
purchaser compensation can exceed AED 500,000.
Replacement after installation: Removing and
replacing fire-rated glazing that does not match the approved fire
strategy requires scaffolding or access equipment, removal and disposal
of the non-compliant assembly, re-ordering the correct system (4-8 week
lead time for fire-rated glass), re-installation, and re-inspection. The
cost per door is typically AED 8,000-15,000 — multiplied across 50-100
fire doors on a typical high-rise project, this becomes a significant
financial exposure.
Liability: Fire-rated glazing that fails to achieve
its rated performance during an actual fire creates immediate legal
liability for the specifier, the supplier, the installer, and the
building owner. This is not a theoretical risk — Dubai Civil Defence
investigates fire incidents and traces the cause through the approval
and inspection chain.
The correct approach is simple: specify the complete fire-rated
assembly from one manufacturer, verify that the test certificate covers
the exact configuration, ensure that no component substitutions occur
during procurement or installation, and maintain the documentation chain
from test certificate through to installed labelling.
Specification
Checklist for Fire-Rated Doors in Dubai
Every fire door specification should confirm:
The system manufacturer and product name. The fire classification
(EI30, EI60, EI90, EI120). The test standard (EN 1634-1 for fire
resistance, EN 1634-3 for smoke control). The maximum leaf dimensions
and weight. The glass type, supplier, and maximum glazed area (if
applicable). The hinge manufacturer and model (must match test
certificate). The lock manufacturer and model. The closer manufacturer,
model, and strength grade. The intumescent seal type and configuration.
The cold smoke seal type. The threshold detail (some fire doors require
a rebated or drop-seal threshold). The door label type and location.
All of the above must be traceable to the test certificate and field
of application document. If any item is not covered by the test
documentation, it must be resolved before fabrication begins — not
during installation, and certainly not during inspection.
London Architectural Aluminium fabricates fire-rated door systems
for Dubai projects, including the Cortizo Millennium FR range. For fire
door specification support or technical consultation, contact our
team.