London · TR19 Grease
We clean the full commercial duct run - grease, dry and laundry ductwork, canopy to roof fan - for kitchens and industrial sites across London, and certify it to the TR19 Grease standard your insurer expects.
London
London is wedged into the oldest, tightest commercial building stock in the country - and behind a large share of its kitchens sits a grease extract duct that a canopy clean never reaches.
The capital's kitchens cluster in old, tight buildings. In the West End and the City - Soho, Covent Garden, Chinatown and the lanes around the Square Mile - extract ducts thread up through listed Georgian and Victorian buildings, taking long concealed risers from basement kitchens to a roof fan three or four floors up. London's roughly 1,159 hotels add another layer - multi-storey kitchens and laundries behind more than 140,000 rooms, with the long hidden duct routes that come with them. The same pattern repeats in the railway-arch kitchens of Bermondsey and Vauxhall and the converted warehouses of Shoreditch.
Then there is the volume catering: the teaching-hospital kitchens at Guy's and St Thomas' and Barts, the university halls of UCL and King's, the stadium and arena kitchens at Wembley, Tottenham and the O2, and hundreds of hotel and care-home kitchens. High-output kitchens lay grease down fast, and the concealed sections of their ductwork are exactly where it builds toward a fire. We clean the complete run to the TR19 Grease standard - canopy to fan, including the horizontal and vertical sections a canopy-only clean leaves coated.
The standard
TR19 Grease is the benchmark insurers and fire risk assessors expect. It covers the whole extract system, measured - not just the parts you can see.
Grease is measured by thickness, and the standard sets the level at which a system must be cleaned and re-tested. A canopy and filter wipe-down leaves the ductwork itself - the long concealed runs where grease accumulates and a fire travels - untouched. We access the full run through existing and newly fitted inspection hatches, clean to bare metal, record before-and-after grease readings at set points, and issue a TR19 Grease certificate with a post-clean depth record.
By system
The fire risk. Fried-food extract coats duct walls in combustible grease; cleaned canopy to fan and certified to TR19 Grease.
Supply and general extract carrying dust and debris that throttles airflow and spreads contamination; cleaned to TR19.
The hidden one. Tumble-dryer and industrial-launderette ducting packs with lint - highly combustible - in London hotels, care homes, gyms and commercial laundries.
On the ground in London
We are under London's kitchens and plant every week. The proof is the jobs, not the stock photos.
At an industrial launderette in London we found the rigid extract ducting packed with lint - a serious fire load, and the reason the system was running hot. We deep-cleaned all the rigid ducts and the extractor fan, replaced the flexible ducting and cleared the dryer filters. The system ran cooler straight away, and the client reported a week later that far less lint was building up across the factory floor; they booked the duct run in on a regular three-monthly clean.
When it is due
Ductwork rarely warns you politely. These are the tells.
Smells pushing back into the kitchen, a canopy that drips, extraction that no longer pulls, visible grease at the filter edges, or an insurer or fire risk assessment asking for a TR19 certificate you cannot produce. Cleaning frequency tracks use - heavy frying needs it far more often than light cooking - and your certificate states the interval, so the next clean is never a guess.
How it runs
Inspect the full run, find the access gaps, agree scope and frequency.
Fit inspection hatches where the run is sealed, protect the kitchen.
Canopy to fan, down to bare metal, with before-and-after evidence.
TR19 Grease certificate, grease-depth record and next-due date.
Why it matters
Three duties push every operator to keep ductwork clean, and they reinforce one another.
Fire safety law. Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person for a premises must assess and manage fire risk. A grease-laden duct is one of the most serious risks in any catering building, because a flare-up on the cookline can travel the ductwork and spread fire through concealed voids. The Health and Safety at Work etc. Act 1974 and the Health and Safety Executive reinforce the same duty of care.
Insurance. A current TR19 Grease certificate is the evidence your insurer expects. Without it, a fire claim can be reduced or refused outright - an expensive gap to find after the event.
Hygiene and environmental health. Food hygiene inspections assess the physical condition of premises, ventilation included. A grease-clogged system can count against the rating an Environmental Health Officer awards, quite apart from the smell and the falling extract performance your staff have to work in.
It is set by cooking hours under TR19 Grease - roughly every three months for heavy use of 12 to 16 hours a day, every six for moderate use, every twelve for light use. A hard-frying Soho or Chinatown kitchen sits in a tighter band than a daytime City cafe. We measure the grease load and confirm your interval.
The full run, from the canopy through the concealed horizontal and vertical ductwork to the roof fan. It matters in London because so many kitchens sit in listed Georgian and Victorian buildings with long, hidden risers that a canopy-only clean leaves loaded with grease.
That is common in the older buildings of the West End and the City. We fit compliant access panels where the ductwork has none, so every internal section can be reached, cleaned and inspected, then certified.
Yes. London's hotels, gyms, care homes and commercial launderettes run lint-heavy laundry ducts and dry ductwork that carry their own fire and air-quality risk. We clean and certify these alongside kitchen grease ducts.
Yes. From West End and City kitchens to the industrial units and laundries of Park Royal, Bermondsey and the Old Kent Road, and out across Greater London and the Home Counties.
Yes. We work overnight, early mornings and closing days for city kitchens, and around shift patterns at production and laundry sites, with no extra charge for out-of-hours work.
A dated TR19 certificate, before-and-after photographs of each section, and an access report for your fire logbook. That is the evidence a London insurer and fire risk assessor expect, and its absence is a common reason a fire claim is reduced or refused.
Phoenix Duct Clean · by the numbers
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