DescriptionRobust Glas-Dor 120: 120-Minute Fire Rated Glazed Steel Door
Product Overview
Maximum Fire Protection for Critical Compartmentation
When building regulations demand the highest level of fire separation, the Robust Glas-Dor 120 delivers. This advanced steel profile system provides up to 120 minutes of certified fire resistance (E120 / EI120)—double the protection of standard fire doors—making it essential for high-rise buildings, critical infrastructure, and complex multi-occupancy developments.
Designed for architects and specifiers working on projects where extended evacuation times are necessary, the Glas-Dor 120 combines exceptional fire performance with the transparency required for modern, light-filled design. It meets the stringent requirements of Approved Document B for buildings over 18 metres in height, complex healthcare facilities, and secure government installations.
Key Features & Benefits
1. Extended 120-Minute Fire Rating
The Glas-Dor 120 offers the ultimate in fire compartmentation, designed for situations where standard 60-minute doors are insufficient:
- E120 (Integrity): Prevents the passage of flames, smoke, and hot gases for a full 120 minutes—critical for protecting evacuation routes in high-rise buildings where descent times are extended.
- EI120 (Integrity & Insulation): Available on wall sections up to 3.3m high. Provides the highest level of protection by blocking flames, smoke, AND dangerous radiant heat for 120 minutes, ensuring adjacent spaces remain safe.
- Door Configuration: Doorsets available up to EI 90/60 (90 minutes integrity, 60 minutes insulation).
2. Engineered for High-Consequence Buildings
The enhanced fire performance makes this system indispensable for buildings where fire safety is non-negotiable:
- High-Rise Residential: Essential for buildings over 18m where Building Regulations demand extended fire resistance in corridors and lobby separations.
- Critical Infrastructure: Data centres, control rooms, and secure facilities where extended protection of valuable assets is required.
- Healthcare: Hospitals and care homes where patient mobility is limited and evacuation may take significantly longer than standard office buildings.
3. Transparent Safety Without Compromise
Unlike concrete or masonry fire walls, the Glas-Dor 120 maintains visual connectivity:
- Natural Light Penetration: Allows daylight to reach deep into building cores, reducing reliance on artificial lighting.
- Visual Monitoring: Security and management staff can observe corridors and lobbies without opening doors, improving situational awareness during emergencies.
- Slender Profiles: Available in 50mm or 85mm widths to maximise glazed area while maintaining structural integrity.
4. Multi-Layered Security
The Glas-Dor 120 is not just a fire door—it is a comprehensive security barrier:
- Intruder Resistance: Tested to EN 1627 up to RC5, suitable for government buildings and high-security applications.
- Ballistic Protection: Available with EN 1522 FB6 ballistic glazing for embassies and critical national infrastructure.
- Forced Entry: Heavy-duty steel construction resists sledgehammer and crowbar attacks far more effectively than aluminium systems.
Understanding 120-Minute Fire Protection in UK Buildings
Under the Building Regulations 2010 (Approved Document B), certain building types require fire doors and walls with extended protection periods:
- Residential Buildings Over 18m: Following the Grenfell Tower tragedy and subsequent regulatory changes, high-rise residential buildings now require 120-minute fire resistance for certain structural elements and compartmentation.
- Complex Evacuation Scenarios: In hospitals, care homes, and prisons, occupants may be unable to self-evacuate quickly. The 120-minute rating provides a crucial safety margin for assisted evacuation or "defend in place" strategies.
- Property Protection: In data centres and archives, the extended fire rating protects irreplaceable digital assets and historic records from fire damage for long enough for fire services to intervene.
Technical Design
- Fire Rating: Up to 120 minutes (E120 wall sections / EI 90/60 doorsets) tested to BS EN 1634-1.
- Wall Sections: Glazed screens up to 3.3m high with 120-minute integrity and insulation (EI120).
- Large Screens: 4-metre high wall sections available up to 60 minutes (EI60).
- Material: Heavy-duty galvanised steel profiles with enhanced fire-resistant core.
- Acoustic Performance: Up to 55 dB sound reduction available.
- Profile Options: 50mm (Standard), 85mm (Heavy Duty / Enhanced Security).
Important Ordering Information
This is a "Price on Application" (POA) product.
Due to the bespoke nature of 120-minute fire-rated systems and the complexity of testing and certification requirements, every Glas-Dor 120 installation is individually quoted based on:
- Opening Dimensions: Each frame is manufactured to exact structural opening sizes.
- Fire & Security Specification: The combination of fire rating, ballistic protection, and security class affects material selection and glazing type.
- Hardware Requirements: Panic bars, access control integration, and automatic closing devices are specified to match your building management system.
- Installation: As a critical life-safety product, we strongly recommend professional installation by certified installers to maintain fire certification validity.
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ApplicationThe Robust Glas-Dor 120 is the ultimate life-safety barrier for buildings where standard fire protection is insufficient. By offering extended 120-minute fire resistance alongside high security (RC5), it is uniquely suited for critical infrastructure, high-rise developments, and secure government facilities.
Ideal Applications
1. High-Rise Residential & Mixed-Use
In the post-Grenfell regulatory landscape, high-rise buildings over 18 metres demand rigorous fire compartmentation.
- Escape Stairs: Protects the integrity of vertical escape routes for a full 2 hours, allowing safe evacuation from upper floors.
- Lobby Separation: Isolates residential wings from communal lift lobbies, preventing smoke and fire spread.
- Internal Corridors: Creates long-duration fire breaks in extended corridors.
2. Critical Infrastructure & Data Centres
Facilities housing essential services or high-value assets require maximum protection.
- Server Rooms: 120-minute insulation (EI120) wall sections protect sensitive servers from the heat of a fire in an adjacent room, preventing data loss even before the flames reach the hardware.
- Control Rooms: Ensures operational continuity for security and emergency services personnel during a
SpecificationTechnical Specification: Robust Glas-Dor 120
Dimensions & Size Range
- Max. Width: 1375 mm (Single Leaf) / 2500 mm (Double Leaf)
- Max. Height: 2500 mm (Standard) / up to 3000 mm (Project dependent)
- Wall Sections: Up to 3.3m high (for EI120 applications).
- Sliding Doors: Max. leaf size 1250 mm x 3000 mm (Bi-parting opening up to 2210 mm).
Fire Resistance Performance
Tested in accordance with BS EN 1634-1:
- Fire Integrity (E): Up to 120 minutes (E120).
- Fire Insulation (EI):
- Doorsets: Up to 90 minutes Integrity / 60 minutes Insulation (EI 90/60).
- Wall Sections: Up to 120 minutes Integrity & Insulation (EI 120).
- Sliding Doors: Up to 30 minutes Integrity & Insulation (EI 30).
- Smoke Control: Certified to EN 1634-3 (Sa / S200).
Security & Intruder Resistance
- Burglary Resistance: Certified to BS EN 1627 up to RC5 (Resistance Class 5).
- PAS 24: Certified for enhanced security performance.
- Ballistic Resistance: Tested to BS EN 1522 up to FB6 (Rifle protection).
- Glazing Security: Glass and fittings tested for burglary resistance to EN 356.
Profile Construction
- Material: Heavy-duty galvanised steel profiles with insulated fire-resistant core.
- Profile Widths (Face): Available in 30 mm, 50 mm, or 85 mm.
- Profile Depths: Narrow (20 mm) or wide profiles (85, 130, 180, or 260 mm) available to suit structural requirements.
- Finger Trap Protection: Integrated anti-finger trap gasket tested to BS 476.
Acoustic & Thermal Performance
- Acoustic Reduction: Up to 55 dB (Dependent on glass specification).
- Thermal Efficiency: Insulated steel profiles reduce heat transfer, contributing to building energy performance.
Finish
- Coating: Polyester Powder Coated (PPC) to any standard RAL colour.
- Base Protection: Galvanised steel substrate offers enhanced corrosion resistance compared to untreated steel.
- Marine Grade: Optional enhanced finishes available for C4/C5 coastal environments.
Hardware & Locking
- Hinges: High-performance stainless steel butt hinges (welded or screwed).
- Locking: Type-approved solutions include single-point, multi-point locks (MPL), and panic hardware.
- Closers: Heavy-duty overhead closers required for fire-rated doors (standard or hold-open options linked to fire alarm).
WarrantyWarranty & Guarantees
Anti-Corrosion Warranty
All Robust steel doors manufactured using a base material of 'Magnelis' carry comprehensive anti-corrosion protection, providing long-term durability and peace of mind:
- C1 – C3 Locations: 10-year anti-corrosion warranty (Standard UK commercial environments including offices, schools, hospitals, and warehouses).
- C4 Locations: 5-year anti-corrosion warranty (Coastal areas or industrial environments with moderate salt exposure).
- C5 Locations: 3-year anti-corrosion warranty (Aggressive marine environments or heavy industrial settings).
Important: The anti-corrosion warranty applies to the door leaf only unless we are notified prior to quotation and manufacturing. Additional protection can be offered for components not available in Magnelis, such as vision panels, louvre panels, and associated hardware.
Aluzinc Doors
Doors manufactured using Aluzinc base material carry a 24-month anti-corrosion warranty unless an enhanced polyester powder coated (PPC) finish is requested and applied, which may extend the warranty period.
Manufacturing Defects Warranty
All Robust doorsets supplied by Samson Doors carry a 24-month warranty against manufacturing defects, covering:
- Structural failures or weld defects in the steel frame and leaf.
- Faulty hinges, closers, or locking mechanisms supplied and fitted by Robust.
- Delamination or failure of powder-coated finishes (subject to proper maintenance).
Warranty Conditions
All warranties are subject to the following conditions:
- Regular Maintenance: Site maintenance must be carried out at regular intervals as outlined in the Operation & Maintenance (O&M) Manual supplied with the doorset.
- Proper Installation: The doorset must be installed by a competent contractor in accordance with Robust's installation instructions.
- Environmental Suitability: The door must be specified for the correct environmental classification (C1–C5) at the time of order.
How to Make a Warranty Claim
If you believe your Robust doorset has a manufacturing defect or corrosion issue within the warranty period, please contact the Samson Doors technical team with the following information:
- Original order/invoice number.
- Photographs of the defect or issue.
- Details of site maintenance carried out (if applicable).
Our team will assess the claim and arrange remedial action in accordance with the warranty terms.
For full warranty terms and conditions, please request a copy of the Robust UK Warranty Certificate at the time of order.
