Duct Inspection Photo Evidence Tr19 Uk
For TR19-style UK duct hygiene reporting, consistent before-and-after photo positions usually matter more than which handheld camera brand you carry. Insurers and facilities teams want comparable images that show the same surfaces under similar lighting, not a random gallery of dramatic close-ups.
BESA describes TR19 as the industry’s recognised standard for internal cleanliness of ventilation systems, with inspection, cleaning and verification practice used across commercial buildings. Photographic evidence is called out as a crucial part of documenting condition and cleaning outcomes.
Read BESA’s public overview: BESA TR19 ventilation hygiene standards explainer. The full specification is sold via BESA Publications TR19 Air product page.
Important boundary
TR19 is industry guidance widely referenced for due diligence. It is not itself a statute. Legal duties still sit in fire safety, health and safety, and related regimes — TR19 helps show a recognised standard of care.
Photo evidence checklist
- Agree identical camera positions before cleaning starts; mark access doors or panel numbers.
- Match lighting and white-balance as closely as practical between before and after sets.
- Capture stills that show deposit condition clearly; add video only when motion helps explain a bend.
- Record access limits in the report when a tip cannot reach a branch.
- Name files with site, system, position and date so auditors can reorder the pack.
When a short articulating handset helps — and when it does not
A steerable short probe helps elbows and local coils near an open access panel. It does not replace 20–40 m duct survey reels used for long trunk runs. If you are still deciding whether 1.5 m reach is enough, read when a 1.5 m semi-rigid borescope is enough. For tip aiming versus dual fixed lenses at elbows, see dual lens versus articulating tip.
Who needs specialist long-reach duct CCTV
Facilities teams surveying long horizontal trunks, kitchen extract runs with multiple bends, or systems that require continuous metre-marked footage should budget for dedicated duct cameras. Keep the handheld articulating kit for near-access diagnostics and photo detail — not as a pretend whole-system survey tool.