Is TR19 a Legal Requirement?
When a fire risk assessor or insurer asks about your kitchen extraction cleaning, the question of TR19 compliance often comes up. It sounds like a legal obligation, but the actual position is more nuanced. This guide explains what TR19 is, what the law genuinely requires, and how the two fit together for UK commercial kitchens.
What TR19 Actually Is
TR19 is not a law or a regulation. It is the Technical Standard for the Internal Cleaning of Grease Extract Ductwork, published by the Building Engineering Services Association (BESA). It sets out the recognised industry best practice for cleaning grease-laden ventilation systems, including ductwork, canopies, and filters.
The standard provides a benchmark: what to clean, how often to clean it, and how to document the work. It also defines a post-cleaning inspection regime so that a competent contractor can demonstrate that the system is clear of hazardous grease deposits. When you receive a compliance certificate from a contractor like BlueTick, it confirms the work was carried out against this recognised standard.
The confusion arises because TR19 is often appended to legal duties. People assume that 'following TR19' and 'complying with the law' are interchangeable. They are not, though they are closely related in practice.
The Actual Legal Duty: The Regulatory Reform (Fire Safety) Order 2005
The primary law governing fire safety in non-domestic premises in England and Wales is the Regulatory Reform (Fire Safety) Order 2005 (the RRO). Similar but separate legislation applies in Scotland and Northern Ireland. The RRO does not mention TR19 by name. Instead, it places a duty on the "responsible person" — typically the employer, owner, or occupier — to take general fire precautions.
That duty includes a requirement to ensure that fire-fighting equipment and fire detection systems are subject to appropriate maintenance. Critically, it also requires that any hazard that could promote the spread of fire is kept under control. A build-up of grease in a kitchen extraction duct is precisely such a hazard. If a fire starts in the canopy and travels along a grease-laden duct, the fire can spread rapidly and out of control.
So, while the RRO does not say "clean your ductwork to TR19," it does require you to take measures that TR19 represents. The standard has become the practical way to evidence that you have met your legal duty. A competent fire risk assessor will look for documented evidence of regular, professional cleaning. In the absence of that evidence — or worse, in the presence of heavy grease build-up — they will flag a significant risk, and you will be expected to correct it.
What Insurers Require in Practice
Your insurance policy is a separate matter from fire safety law, but the two often overlap. Commercial insurance policies typically contain a condition requiring you to comply with all relevant statutory obligations and to take reasonable precautions to prevent loss or damage. They also usually impose specific requirements for fire prevention systems and associated maintenance.
Because TR19 is the established industry standard for extraction system hygiene, many insurers and their risk surveyors use it as the reference point. A policy's "reasonable precautions" condition can effectively translate into the expectation that you can produce a valid TR19 compliance certificate for each extraction system, cleaned at the prescribed frequency, by a competent contractor.
What we will not tell you is that a failure to comply "will" result in a refused claim. That is for the insurer to determine based on the policy wording and the specific facts. The Insurance Act 2015 introduced a more proportionate approach, and outcomes now depend on whether the breach increased the risk of the actual loss. However, the practical reality is clear: a policyholder facing a grease fire in a duct, with no cleaning records, has a far more difficult conversation with their insurer than one who can produce up-to-date certificates.
The sensible position for any responsible person is therefore to treat TR19 as a contractual and evidential necessity, even if it is not strictly a statute. You need the evidence to satisfy your duty under the law and your conditions under the policy.
This is the part we are unusually placed to help with. Our principal surveyor holds the CII Level 3 Certificate in Insurance alongside the BESA Grease Hygiene Technician (GHT3) and Grease Hygiene Operative (GHO3) qualifications. That means we can read the cleaning endorsement on your policy and tell you what it actually asks for, rather than simply cleaning the ductwork and handing you a certificate. Any review of the cover itself is a regulated activity and a matter for your broker.
The Bottom Line for Kitchen Owners
Do not get caught up in the semantics of the phrase "legal requirement." If your kitchen runs long hours, fries at volume or cooks over a naked flame, you sit towards the heavy-use end of the BESA bands, where cleaning is recommended every three months. Moderate use is typically six-monthly and light use annually. Solid fuel brings its own considerations and should be assessed on site rather than assumed. In every case the interval follows from the actual grease loading, which is what a survey establishes.
Your key responsibilities are straightforward:
- Arrange regular, professional cleaning of the canopy, filters, and full duct run.
- Insist on a compliance certificate after each clean, detailing the work carried out.
- Keep those certificates on file as your evidence of compliance.
- Review your cleaning schedule if cooking patterns or fuel types change.
It is not enough to have the extraction system cleaned "occasionally" or to rely on visual checks of the filters alone. Grease accumulates in the horizontal and vertical duct runs, where it is unseen. Professional duct cleaning that meets the TR19 standard is the only reliable way to address that risk.
Secure Your Compliance With BlueTick
If you are unsure whether your current cleaning regime meets the required standard, or you lack the certificates to prove it, now is the time to act. BlueTick Extraction Hygiene cleans commercial kitchen extraction systems to the BESA TR19 standard, from Peterborough and across the East Midlands. We provide full duct cleaning, canopy and filter cleaning, and issue compliance certificates you can present to your fire risk assessor and insurer with confidence.
Contact BlueTick today for a free site survey. We will assess the condition of your extraction system, recommend an appropriate cleaning schedule, and ensure you have the documentation you need to demonstrate your duty of care.