What Post-Clean Evidence Should You Receive After Kitchen Extract Cleaning?
The job is not finished when the cleaning stops. The organisation needs usable evidence of what was completed, what could not be accessed and what remains outstanding.
Post-clean evidence should help a facilities manager, responsible person, insurer, landlord or professional adviser understand the outcome of the attendance without having been present on site. The objective is traceability: connect the contractor, system, work completed, photographs, measurements where relevant, exclusions and certificate or notification into one understandable record.
A third party should be able to understand the outcome without reconstructing the job from emails.
A useful close-out pack connects the original maintenance requirement with the contractor’s physical attendance. It should make clear which site and system were involved, what work was completed, what evidence supports that statement and whether any limitation or further action remains open.
This matters because the same records may later be read by someone who did not commission the work: a new facilities manager, fire-risk assessor, insurer, broker, auditor, landlord, buyer, managing agent or another contractor planning the next maintenance visit.
What should be visible in a post-clean record?
Written summary of completed work
BESA’s January 2026 kitchen-extract guidance says a post-clean verification report should include a written summary of the work completed. The description should be specific enough to connect the attendance with identifiable parts of the relevant extraction system.
Before-and-after photographs
BESA refers to photographs from matching positions. That makes comparison more meaningful and reduces the risk of an attractive close-up image being mistaken for evidence of an entire duct route.
Relevant test results
Where Deposit Thickness Tests, Wet Film Thickness Tests or other relevant measurements were carried out, the contractor’s results should remain connected with the system location and report. EC does not independently validate those readings.
Access limitations and recommendations
The record should preserve areas that could not be accessed or need further attention. An exclusion is part of the evidence, not an inconvenient detail to remove from the close-out pack.
Hygiene certificate or applicable notification
BESA’s guidance refers to a hygiene certificate identifying the clean. Where applicable, VHR documentation can also form part of the maintenance record for work notified by an approved member.
System drawing or location reference
Where available, a drawing, schematic, labelled photograph set or other location reference can help the reader understand which surfaces and sections the evidence relates to—especially on complex or multi-system sites.
A clean photograph is not automatically evidence of a clean system.
Photographs are strongest when they are traceable. The reader should be able to understand where the photograph was taken, what component it shows and whether the before and after images relate to the same position.
Repeated photographs of the easy-to-reach canopy can create a misleading impression if the report separately records inaccessible ductwork or a fan that was not reached. The complete evidence pack should allow both facts to remain visible at the same time.
If one section remained inaccessible, that limitation belongs in the same close-out story as the sections that were successfully completed.
System context makes photographs more useful.
The historic EC Cleaners archive contains both equipment close-ups and wider site photographs. Together they illustrate a simple reporting principle: technical detail becomes easier to interpret when the reader can connect it with the actual plant, route or environment.
These are historic project images only. They are not presented as a current Search and Submit Ltd evidence pack or as a model report that retrospectively certifies the original work.
A notification can strengthen the audit trail, but it does not replace the detailed report.
BESA describes the Vent Hygiene Register as the UK’s official register for ventilation-hygiene contractors. Approved members can notify completed work through the VHR platform, creating a scheme record of work carried out under the relevant TR19® framework.
The current register has separate Grease and Air work categories. BESA says members can now notify completed general ventilation cleans as well as Grease work, helping clients evidence work against the relevant BESA specification.
For the specifier, the important point is that the notification and the detailed contractor report serve related but different purposes. The notification supports the audit trail; the report should still explain the actual system, work, photographs, results and exclusions.
Do not mix evidence from different ventilation workstreams.
TR19® Grease and TR19® Air are separate BESA specifications. Grease concerns fire-risk management of grease accumulation within commercial kitchen extraction. The March 2026 TR19® Air specification concerns internal cleanliness and hygiene management of general ventilation systems and now includes a dedicated section on post-clean reporting.
If a site contains both kitchen extract and general ventilation, the records should make it clear which system each report, photograph, test and notification relates to. A certificate for one workstream should not be used as evidence for another.
Kitchen grease extract, general ventilation, fire dampers, specialist healthcare ventilation and process LEV can all involve different standards, contractors and technical records. Keep them separated at asset level.
Do not fill the gap with assumptions.
If the contractor record lacks photographs, omits part of the system, contains an unexplained certificate, gives conflicting dates or says nothing about a known inaccessible area, the first action may simply be to ask the contractor for clarification.
Where the missing information affects a professional recommendation or insurance requirement, return the clarified evidence to the originating adviser rather than asking EC to make the professional conclusion on their behalf.
Evidence is most valuable when it can be found again.
For a single restaurant, the report may sit in a local maintenance folder. For a national estate, evidence can become fragmented across email inboxes, CAFM systems, contractor portals, shared drives and individual site folders.
A simple consistent naming and status structure can make future procurement much easier. The next contractor should be able to see the previous clean, recurring exclusions and relevant access information without the facilities team reconstructing the history from scratch.
EC can check whether the record is commercially understandable—not whether the technical work passes.
EC Cleaners Network can organise customer-supplied reports, certificates, photographs and quotations; identify obvious missing information; highlight access exclusions and recommendations; and help turn an unresolved item into a clearer contractor enquiry.
EC does not inspect the system, validate deposit measurements, determine whether a photograph proves technical cleanliness, confirm TR19 compliance, approve a VHR notification, make an insurer’s coverage decision or replace the professional judgement of a fire-risk assessor or engineer.
Send the report, certificate, photographs and original instruction together.
If there is an insurer request, fire-risk action, quotation or earlier report, include that as well. EC can help organise the evidence, expose unanswered commercial questions and identify whether clarification, access remediation or another contractor action is needed.
EC Cleaners Network is operated by Search and Submit Ltd. This guidance provides general commercial and procurement information only and is not fire-safety, insurance, engineering, legal or technical advice. Search and Submit Ltd does not inspect systems, validate measurements or photographs, determine TR19 compliance, approve contractor workmanship or VHR notifications, certify work or make professional safety conclusions. Independent appointed contractors and relevant competent professionals remain responsible for technical assessment, testing, reporting, certification and professional conclusions within their own scope.