The Fire Risk in Your Kitchen Ceiling
Most commercial kitchen operators are aware of the obvious fire risks in their kitchen — open flames, hot oil, electrical equipment. Fewer are aware that one of the most significant fire risks in a commercial kitchen is hidden from view: the grease that accumulates inside the extraction system above the cooking equipment.
Kitchen extraction systems are designed to remove heat, steam, and grease-laden vapour from the cooking environment. In doing so, they accumulate grease deposits on every internal surface — canopy hoods, ductwork, risers, and fan units. Over time, these deposits build up into a thick, highly flammable layer that can ignite from a single flame or spark reaching the extraction system.
The Statistics
The scale of the problem is significant. Commercial kitchen fires are among the most costly and disruptive events a food service business can experience, and grease buildup in extraction systems is consistently identified as a primary cause.
The consequences of a commercial kitchen fire extend far beyond the immediate physical damage. Business interruption — the loss of income while the premises are repaired and the kitchen is out of operation — can last for months. For many small and medium-sized hospitality businesses, a serious kitchen fire is an existential event.
How Grease Ignites in an Extraction System
Grease ignition in an extraction system typically occurs in one of three ways.
Flashback from cooking equipment: A flame from a gas burner, grill, or fryer reaches the canopy hood and ignites accumulated grease deposits. The fire then travels through the ductwork, following the grease deposits upward through the building.
Spontaneous ignition: In heavily loaded systems, grease deposits can reach temperatures at which spontaneous ignition occurs, particularly in systems where the extraction fan is drawing hot air through grease-laden ductwork.
Electrical fault: An electrical fault in the extraction fan or associated wiring can ignite nearby grease deposits.
In all three scenarios, the outcome is the same: a fire that travels through the ductwork of the building, potentially spreading to multiple floors and areas that are remote from the original cooking equipment.
How TR19 Cleaning Reduces Fire Risk
TR19-compliant kitchen extract cleaning directly addresses the grease accumulation that creates these fire risks. By removing grease deposits from the entire extraction system — canopy, ductwork, risers, and fan — at the frequency specified by the TR19 standard, the fuel source for an extraction system fire is eliminated.
The TR19 standard specifies maximum acceptable grease deposit thicknesses at different points within the system. A compliant clean reduces deposits to within these limits, providing a measurable, documented reduction in fire risk.
The Regulatory Framework
The legal obligation to manage fire risk in commercial premises is established by the Regulatory Reform (Fire Safety) Order 2005. Under this legislation, the responsible person for commercial premises is required to carry out a fire risk assessment and implement appropriate fire prevention measures. A grease-laden extraction system is a recognised fire risk, and failure to maintain it through TR19-compliant cleaning can constitute a breach of the responsible person's obligations under the Order.
Cambridgeshire Fire and Rescue Service, in common with fire services across the UK, actively promotes TR19 compliance as a fire prevention measure for commercial kitchen operators.
BlueTick Extraction Hygiene: TR19 Specialists in Peterborough
BlueTick Extraction Hygiene provides TR19-compliant kitchen extract cleaning across Peterborough, Cambridgeshire, Northamptonshire, and Lincolnshire. Every clean includes a full photographic compliance report and TR19 certificate — providing documented evidence of fire risk management for your insurer, fire officer, and EHO.
Our founder's CII qualifications and connection to an FCA-regulated commercial insurance brokerage means we understand the insurance implications of TR19 compliance. We don't just clean your system — we protect your business.
Call 07423 291372 or visit bluetickhygiene.co.uk to book a free, no-obligation site survey.
Related reading: Will My Insurance Be Void Without TR19 Compliance? | What Is TR19 Kitchen Extract Cleaning?