PASSIVE PROTECTION
Fire doors
Passive protection · by opening and risk zone
A physical barrier limiting flame and smoke spread through building openings.
- Rating
- Project-specific EI
- Barrier
- Flame + smoke spread
- Assembly
- Leaf + frame + hardware
- Handover
- Certificate review
FIRE-RESISTANT DOORS
Not just a closed opening—a system that completes a protection zone.
A fire-resistant door is a system in which the frame, leaf, seals, closer and selected hardware work together. The required EI class, size and daily operating use are not separate decisions.
Door type, hardware and installation sequence are selected for the risk zone, opening size and operating use.
- Function
- Fire · Smoke barrier
- Use
- Corridor · Plant room
- Selection
- By opening
CONSTRUCTION FEATURES
Performance is not contained in the door leaf alone.
Component compatibility should be checked during installation and acceptance.
- EI
Resistance class
The required rating is defined from the facility zone, design and applicable requirements.
- Frame
Opening compatibility
Size, wall type and mounting method are integral to the selected assembly.
- Closer
Maintaining the closed state
Selected and tested to reconcile daily use with the safety function.
- Seal
Managing leakage paths
Considered with the assembly and installation as part of flame- and smoke-related performance.
INSTALLATION ZONES
The opening is selected within the building's protection map.
Door selection is tied to the actual design zone and movement pattern.
- 01
Corridors and stairs
Escape scenario and everyday circulation intensity are considered together.
- 02
Technical rooms
A compatible protection line around equipment, energy and service access may be required.
- 03
Retail and hospitality
Design, intensive use and technical compatibility form one selection.
EI RATING SELECTION
A rating is not selected without project input.
The groups below start the project discussion; the final rating is confirmed by the responsible designer and applicable requirements.
EI 30
Lighter and common openings
Application is defined only in the approved project context.
EI 60
Enhanced protection zones
Opening role, people flow and adjoining-zone risk are assessed together.
EI 90+
Special project scenarios
Industrial, critical-infrastructure and complex compartmentation cases may require a separate technical review.
The door performs its function when closed.
Wedging or holding a door open with a heavy object can compromise its protection function. Open-door operating scenarios should use only approved technical solutions.
FREQUENTLY ASKED QUESTIONS
Let’s determine the right scope for your facility.
How does a fire-resistant door differ from a standard door?
The difference is not material alone: the tested assembly, frame, closer, seals and installation quality together establish the required performance.
Can the door remain open during daily use?
That depends on the project and selected hardware. If an open condition is required, the controlling solution must be coordinated with related safety systems.
Who determines the EI rating?
The required rating is confirmed from the project zone, applicable requirements and the responsible designer or engineer's assessment.
RELATED SOLUTIONS
What is included in the engineering decision?
DEFINE YOUR SYSTEM
Align your opening with the technical design.
Share the dimensions, wall type, operating use and required protection zone so FireLine can help determine the right assembly.