Norwich · TR19 Grease
We clean the full commercial duct run - grease, dry and laundry ductwork, canopy to roof fan - for kitchens, offices and industrial sites across Norwich, and certify it to the TR19 Grease standard your insurer expects.
Norwich
Norwich rates around 1,600 food premises, and behind a large share sits an extract duct a canopy clean never reaches - plus the dry ductwork and air-handling that keep its offices and public buildings running.
The city's kitchens sit in tight, mixed stock - Magdalen Street, Unthank Road, Tombland - with long concealed duct runs up to roof fans. We clean the full run to the TR19 Grease standard, canopy to fan, including the horizontal and vertical sections a canopy-only clean leaves coated.
Kitchens are only half the work - we also strip the dry supply and extract ductwork of Norwich schools, offices and civic buildings, and the lint-choked dryer runs behind its hotels and care homes. It is the hardest-pressed kitchens - the University of East Anglia, the Norfolk and Norwich University Hospital, Carrow Road and the city hotels - that glaze their hidden ducting quickest, and that coating is the road a fire takes.
The standard
TR19 Grease is the benchmark Norwich insurers and fire risk assessors expect - measured across the whole extract run, not just the visible mouth of the canopy.
Because the standard is written around film thickness, it sets the depth that triggers a clean and re-test. In the mixed roof spaces around Magdalen Street and Tombland, a canopy-and-filter wipe leaves the duct interior - where grease piles up and a fire runs - completely alone. We reach the whole Norwich run through existing hatches and new ones we cut, clean back to bright metal, take before-and-after grease-depth figures at set points, and certify it to TR19 Grease with those depths on the 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 in offices and public buildings, carrying dust and debris that throttles airflow and loads the air-handling unit; cleaned to TR19.
The hidden one. Tumble-dryer ducting packs with lint - highly combustible - in Norwich hotels, care homes and gyms.
On the ground in Norwich
We are in Norwich's ductwork and plant every week. The proof is the jobs, not the stock photos.
A secondary school in Norwich had the changing-room extract lines completely choked with dust and loose lint - no measurable airflow at all. We unclipped every ceiling vent for a full sanitisation, cleaned the main fan housing and brushed out the rectangular branch lines. The humidity dropped straight away when it came back on, heading off mould and getting the fresh air moving - all done over the autumn half-term with the classrooms empty.
When it is due
Ductwork rarely warns you politely. In a busy Norwich kitchen these are the tells.
Smells pushing back into the dining room, a canopy that drips onto a Magdalen Street cookline, extraction that no longer clears the steam, visible grease at the filter edges, or a Norwich insurer or fire risk assessment asking for a TR19 certificate you cannot produce. Cleaning frequency tracks use - a hard-frying Unthank Road kitchen needs it far more often than a daytime cafe - and your certificate states the interval, so the next clean is never a guess.
How it runs
Inspect the full Norwich run, find the access gaps in the concealed sections, agree scope and frequency.
Fit inspection hatches where the run is sealed - common in the older Tombland conversions - and protect the kitchen.
Canopy to roof fan, down to bare metal, with before-and-after grease-depth evidence.
TR19 Grease certificate, grease-depth record and next-due date for your Norwich fire logbook.
Why it matters
Three duties push every Norwich 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 Norwich 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 a Magdalen Street cookline can travel the ductwork and spread fire through concealed voids. The Health and Safety at Work etc. Act 1974 and the HSE reinforce the same duty of care.
Insurance. Your Norwich insurer expects a current TR19 Grease certificate as proof the duct is clean. Without one, a fire claim can be cut back or turned down altogether - a costly thing to find only after a fire.
Hygiene and environmental health. A food hygiene visit from Norwich City Council weighs the physical state of the premises, ventilation counted within it. A grease-blocked extract can pull down the rating an Environmental Health Officer sets, quite apart from the stale smell and the tired airflow your staff work beneath all shift.
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, every twelve for light. A hard-frying Magdalen Street kitchen sits in a tighter band than a daytime Unthank Road cafe. We measure the grease load and confirm your interval.
Little, if it is planned. We survey the Norwich run first, agree a slot overnight or on a close day, sheet off the kitchen and clean section by section, so an Unthank Road cookline is back in service for the next shift.
Yes. We clean the dry ductwork and air-handling in Norwich offices, schools and public buildings, and the lint-heavy laundry ducts in the Norfolk hotels and care homes, alongside kitchen grease ducts.
Yes. The fan at the top of a Tombland or city-centre riser is where grease throws off the blades and the run ends - we degrease it and its housing, because a loaded fan is what finally stops a system pulling.
Yes - from Magdalen Street and Unthank Road kitchens to the offices, schools and industrial units across Norwich and the wider Norfolk.
Yes. We work overnight, early mornings and closing days for the Magdalen Street and Unthank Road kitchens, and around shift patterns at commercial and production sites, at no extra charge for out-of-hours work.
The full run, canopy through the concealed horizontal and vertical ductwork to the roof fan - the hidden sections a canopy-only clean leaves loaded, which matters in the tight stock around Magdalen Street and Tombland where the runs are long and awkward.
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