Cost & value / Insurance worth
To your insurer, the value of a deep clean is not the clean - it is the evidence that it happened to the right standard.
What the insurer is buying
To your insurer, the value of a deep clean is not the clean itself - it is the evidence that it happened, to the right standard. The verification report and certificate are what turn a good job into a defensible one when a claim, an audit or a renewal asks for proof.
Do the work and lose the paperwork, and as far as an insurer is concerned much of the protection went with it.
Why proof matters
Many commercial policies now carry conditions requiring extract systems to be cleaned to TR19 Grease at the correct intervals, and some insurers will only provide cover where a recognised, compliant provider is used. If a fire is later shown to be linked to inadequately cleaned ductwork and no valid certificate exists, your right to be indemnified for the loss can be jeopardised - which is why fire investigators and insurers ask for the records first.
The clean reduces the risk. The certificate is what proves you managed it. The Regulatory Reform (Fire Safety) Order 2005 already places a duty on the responsible person to manage fire risk, and a current certificate is how that duty is evidenced after the event.
What a certificate is worth
A certificate an insurer will rely on is backed by evidence: before-and-after photographs from fixed points, grease-thickness readings along the run, a note of any areas that could not be reached, and a record lodged on the industry register. A qualified technician has to sign it. A bare certificate with none of that behind it may not stand up in the moment it matters most. That is the difference between holding a piece of paper and holding proof an assessor will accept.
Value at the point of claim
On a good day the report sits in a folder. On a bad one - a fire, a renewal, an audit - it is the single document that decides whether the loss is covered and the premium held. That is where its worth is realised. Insurers and fire investigators tend to ask for it first, precisely because it is the quickest test of whether the risk was being managed.
So the physical clean is necessary but not sufficient for cover. The insurer values the verified certificate and the evidence behind it, so without the paperwork lodged the clean has no defensive worth - which makes the report the part you are really paying to keep.
Questions
Many commercial policies require extract cleaning to TR19 Grease at set intervals, and some insurers only cover kitchens cleaned by a recognised provider. The certificate is how you demonstrate you met the condition.
It can be put at risk. If a fire is linked to inadequately cleaned ductwork and no valid certificate exists, your right to be indemnified for the loss may be jeopardised.
The evidence behind it: before-and-after photos, grease-thickness readings, a note of any unreachable areas, a qualified technician's sign-off, and a record lodged on the industry register.
Not always. A bare certificate with no supporting readings or photographs may not satisfy an insurer or an independent audit. The report and its evidence are what give it weight.
Keep every report and certificate for as long as your policy and fire risk assessment expect - typically well beyond a single year - so you can answer any renewal, audit or claim without a gap in the record.
Phoenix Duct Clean · by the numbers
Every clean we carry out comes with a verified report and TR19 Grease certificate you can hand straight to an insurer or fire assessor. Ask us for a survey and a quote.