Construction site fires cost the UK industry £400M+ annually. This guide covers JCOP requirements, hot work management, timber frame risks, and insurance obligations for site fire safety.. Construction Site Fire Risk Construction sites are among the highest fire risk environments in the UK. The combination of hot work, temporary electrical installations, combustible materials, and multiple contractors creates a perfect storm. The Joint Code of Practice on the Protection from Fire of Construction Sites and Buildings Undergoing Renovation (JCOP) provides the industry standard for managing these risks. Statistics 3,000+ construction site fires annually in the UK £400 million estimated annual cost to the industry Arson accounts for 30% of construction site fires Hot work is the leading cause of accidental site fires (35%) Timber frame buildings under construction are most vulnerable Insurance : 15% of construction insurance claims are fire related JCOP Requirements Site Fire Risk Assessment Before work begins — documented fire risk assessment for the entire site Updated regularly — as construction progresses and fire risks change Communicated — to all workers through site induction Displayed — fire plan posted at site entrance and welfare facilities Hot Work Management Permit to work system — written permit for all hot work operations Fire watch — trained person observing work and post work monitoring Post work monitoring — minimum 60 minutes after hot work cessation Fire extinguishers — minimum 2 × 9L water extinguishers at every hot work location Combustible clearance — minimum 10m clearance or fire blanket protection No hot work after hours — unless specifically authorised with extended fire watch Timber Frame Construction — Special Measures Timber frame buildings are classified as High Hazard by the FPA: The 16 Steps to Fire Safety (Timber Frame) 1. Appoint a Fire Safety Manager 2. Develop a fire prevention plan 3. Control hot work 4. Manage electrical installations 5. Provide temporary fire detection 6. Install temporary fire suppression 7. Ensure adequate water supply 8. Control combustible waste 9. Provide perimeter security 10. Install CCTV monitoring 11. Provide fire fighting equipment 12. Display fire action notices 13. Conduct fire drills 14. Brief all workers at induction 15. Maintain emergency access for fire service 16. Implement smoking controls Temporary Fire Detection and Suppression System When Required Coverage Portable smoke alarms From first combustible material on site All enclosed areas Temporary fire alarm When building becomes enclosed Full BS 5839 1 coverage Fire extinguishers From day one Every floor, every 30m Temporary sprinklers Timber frame 4 storeys All enclosed timber areas Temporary dry riser Building 18m Connected to fire service inlet Insurance Obligations JCT contract — contractor's all risks insurance must cover fire Joint names — policy must cover all parties (contractor, employer, subcontractors) JCOP compliance — insurers may void cover if JCOP not followed CCTV — many insurers require 24/7 CCTV for timber frame sites Security — manned guarding or intruder detection outside working hours Hot work — specific hot work procedures required by most construction insurers Claims record — fire claims significantly increase future premiums Phased Occupation Where buildings are occupied in phases while construction continues: Physical separation — fire rated barriers between occupied and construction zones Detection continuity — maintaining fire alarm coverage in occupied areas Escape routes — independent escape from occupied areas away from construction Dust and noise — management to prevent false alarms in occupied zones Fire service access — maintained to all occupied areas at all times Magnus Opifex SEVEN LTD — UK's Leading Fire Safety & Fire Engineering Consultancy 🌐 magnus opifex.co.uk 📞 +44 7486 691724 ✉️ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby — CEO, Lawyer and Barrister, Legal & Administrative Director Alina — Technical Director & Expert Fire Engineer (BEng) Head Office: Ealing Cross, 85 Uxbridge Road, London W5 5BW Magnus Opifex SEVEN LTD delivers engineering led fire engineering, fire risk assessments, CFD modelling, and building safety consultancy across the United Kingdom and internationally. With over 20 years of combined experience and a UK portfolio spanning healthcare, residential and infrastructure, we bring truly engineered solutions with a personal touch. © 2026 Magnus Opifex SEVEN LTD. All rights reserved.