Legal Requirements for Duct & Extraction Cleaning in Commercial Kitchens (UK)
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The Key UK Legal & Regulatory Requirements
1. The Regulatory Reform (Fire Safety) Order 2005
Under the Fire Safety Order, the “Responsible Person” (usually the business owner or manager) must take reasonable steps to reduce fire risk.
This includes:
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Identifying grease build-up as a fire hazard
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Ensuring extraction systems are cleaned regularly
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Keeping evidence of maintenance and cleaning
Failure to comply can result in enforcement notices, fines or prosecution.
2. Health and Safety at Work Act 1974
This legislation requires employers to protect staff and others from health and safety risks.
Poorly maintained extraction systems can:
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Increase fire risk
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Reduce air quality
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Create unsafe working conditions
Regular duct cleaning helps demonstrate compliance with employer duties.
3. Insurance Requirements
Most commercial kitchen insurance policies require regular duct and canopy cleaning.
If a fire occurs and grease build-up is found:
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Claims may be reduced or refused
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Policies may be invalidated
Insurers often expect cleaning to follow recognised industry guidance such as TR19.
4. TR19 (Grease) Industry Standard
While TR19 is not law, it is widely recognised as the industry benchmark for duct and extraction cleaning in the UK.
TR19 outlines:
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Recommended cleaning frequencies
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Acceptable grease levels
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Documentation and certification standards
Fire officers, insurers and Environmental Health Officers frequently reference TR19 during inspections.
How Often Should Ducts Be Cleaned?
Cleaning frequency depends on kitchen usage:
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Heavy use (12–16 hours/day): every 3 months
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Moderate use (6–12 hours/day): every 6 months
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Light use (2–6 hours/day): every 12 months
Care homes, schools and catering kitchens typically fall into moderate use, but this can vary depending on menus and equipment.
What Inspectors & Fire Officers Look For
During inspections, authorities may ask for:
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Evidence of duct and canopy cleaning
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Cleaning certificates or reports
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Visual signs of grease build-up
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Maintenance schedules
A clean kitchen alone is not enough — documentation matters.
The Role of Daily & Routine Cleaning
While specialist duct cleaning must be carried out by professionals, daily and routine cleaning plays a vital role in compliance.
This includes:
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Degreasing canopies and filters
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Cleaning surrounding surfaces
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Using professional kitchen degreasers
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Following clear cleaning schedules
Routine cleaning helps reduce grease build-up between professional cleans and demonstrates good management.
Why This Matters for Care Homes & Schools
In care homes and schools, additional scrutiny applies due to vulnerable residents and children.
Poor extraction hygiene can lead to:
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Fire safety concerns
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Failed inspections
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Reputational damage
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Disruption to meal services
Maintaining clean extraction systems supports both fire safety and food safety compliance.
Staying Compliant: Best Practice Summary
To meet legal and compliance expectations, commercial kitchens should:
✔ Arrange professional duct cleaning at appropriate intervals
✔ Follow TR19 guidance
✔ Keep cleaning records and certificates
✔ Maintain daily degreasing routines
✔ Use professional-grade cleaning products
✔ Train staff on cleaning responsibilities
Final Thoughts
Duct and extraction cleaning is a legal responsibility that cannot be ignored. While professional cleaning is essential, ongoing maintenance using the right cleaning products and procedures plays a critical role in staying compliant, safe and inspection-ready.
For care homes, schools and commercial kitchens, a proactive approach protects people, property and peace of mind.