Fire doors are critical life safety components, designed to slow the spread of fire, smoke, and heat long enough to protect occupants and property. A recent incident in a Connect Housing residential block provided a rare real-world demonstration of how a fully certified fire doorset performs under genuine fire conditions. The event highlighted the importance of correct specification, a compliant product, and accredited manufacturing and installation.
ISG Bradford: Social Purpose and Technical Competence
ISG Bradford, part of the Industrial Services Group, operates as both a specialist manufacturer and a social enterprise, creating skilled employment opportunities for people with disabilities. The organisation manufactures and installs windows, door systems, and high security composite doors, all independently certified and compliant with UK Building Regulations.
ISG Bradford manufactures the Distinction Doors FD30 Composite Leaf with Winkhaus FireFrame 30 Minute Fire Door System (including NanYa leaf) combination, delivering a proven, engineered fire door set, known for robust fire-resistant performance. Demonstrating compliance across multiple BM Trada Q-Mark schemes covering fire resistance, smoke control, security, manufacturing quality, and installation competence—ensuring full traceability and confidence for specifiers.
Darren, at ISG Bradford said: “At around 19:30 a serious fire broke out in a Leeds apartment block. Thankfully, no one was injured, and while the cause is still under investigation, an electrical fault is the likely source. Fire officers were highly complimentary about the ISG Winkhaus FireFrame system with the Distinction Doors leaf installed in 2021. The doors performed so effectively that crews could only identify the affected flat by feeling heat through the letterbox. There was no transfer of heat or smoke through the door, its furniture, or its frame — an exceptional real-world performance that undoubtedly helped prevent the fire from spreading.”
Doorset System and Compliance
For the Connect Housing project, ISG Bradford supplied and installed complete FD30 composite fire doorsets. Each system was manufactured and fitted as a certified assembly, including:
• Distinction Doors FD30 Composite Leaf with Winkhaus FireFrame Tested compatible hardware
• Certified intumescent and smoke seals
• Installation by BM Trada Q-Mark accredited operatives
The doorsets were certified to:
• Approved Document B (Fire Safety – Volume 1)
• BS EN 16341
• BS 476 Part 22
• BM Trada Q-Mark Fire Door Scheme (STD 170)
• BM Trada Q-Mark Fire Door Installation Scheme
This whole system approach aligns with regulatory guidance that fire doors must be specified, supplied, and installed as complete, tested assemblies.
Incident Summary: RealWorld Fire Containment
A fire broke out in an unoccupied flat within the block. When firefighters arrived, they faced an unexpected challenge: the fire doors had contained smoke and heat so effectively that identifying the affected flat was difficult. There was no visible smoke leakage, heat transfer, or distortion on the corridor side of the doorset.
Fire crews ultimately located the flat by inserting their fingers through the letterplate to detect heat—evidence of how effectively the leaf, frame, seals, and hardware maintained compartmentation.
The fire remained fully contained within the flat of origin, preventing lateral or vertical spread. Richard Ayrton, Service Manager at Connect Housing, reported that the chief fire officer praised the doorset’s performance, noting that without such containment, residents would have been at serious risk and the flat would likely have been destroyed.
Performance Beyond Minimum Standards
Although specified as FD30, post incident assessment indicated that the doorset achieved resistance times approaching 45 minutes—around 50% beyond the minimum requirement. This enhanced performance is attributed to:
• The robust composite leaf construction
• Frame to leaf compatibility
• Effective intumescent and smoke sealing
• Accredited installation practices
Such resilience provides additional protection during delayed fire service response and supports safer evacuation.
Distinction Doors: Nationwide Consistency and Assurance
Distinction Doors offer FD30 composite fire doors and a fds system that are fully compliant with Approved Document B and undergo independent bi-directional fire testing. Manufacturing is restricted to audited Q-Mark partners working to STD 170, ensuring consistent, repeatable performance across the UK supply chain. This gives housing providers confidence that installed systems match tested specifications.
Key Outcomes and Considerations for Specifiers
The Connect Housing incident demonstrates:
• The importance of specifying complete, certified doorsets
• The critical role of third-party installation accreditation
• The value of traceable certification and documented compliance
• How correct specification directly reduces risk to life and asset loss
Conclusion
This real world incident validates the performance of ISG Bradford’s fire doorsets and the strength of its partnership with Distinction Doors and Winkhaus. Through rigorous certification, competent installation, and a robust supply chain, the system performed exactly as intended—containing the fire, protecting residents, and preventing extensive property damage.
The case highlights how technical excellence and social purpose can combine to deliver life-saving outcomes, offering a proven, compliant, and performance-led solution for specifiers and contractors.
Fire Door System Performance Under Real Fire Conditions
Connect Housing
ISG Bradford
Distinction Doors
Winkhaus
Client: Connect Housing
Doorset System: Distinction Doors FD30 Composite Leaf with Winkhaus FireFrame 30 Minute Fire Door System (including
NanYa leaf)
Fabricator & Installer: ISG Bradford
(BM Trada Q-Mark Certified)
Connect Housing: www.connecthousing.org.uk
ISG Bradford: builtenvironment.bradford.gov.uk
Distinction Doors: www.distinctiondoors.co.uk
Winkhaus: www.winkhaus.co.uk
Images © Built Environments Industrial Services Group
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