Chesham · 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 Chesham, and certify it to the TR19 Grease standard your insurer expects.
Chesham
Chesham rates hundreds of 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.
Kitchens across Chesham work out of tight, mixed premises - Broad Street, Germain Street, Asheridge Road - their extract snaking through concealed voids to roof-mounted fans. We take the whole run to the TR19 Grease standard, hood to fan, reaching the horizontal legs and vertical risers a canopy wipe never touches.
Kitchens are only half the work - we also strip the dry supply and extract ductwork of Chesham schools, offices and civic buildings, and the lint-choked dryer runs behind its hotels and care homes. It is the hardest-pressed kitchens - pub and restaurant kitchens, cafe galleys, school and workplace canteens and the busy town-centre takeaways - that glaze their hidden ducting quickest, and that coating is the road a fire takes.
The standard
TR19 Grease is the benchmark Chesham insurers and fire risk assessors expect - measured across the whole extract run, not just the visible mouth of the canopy.
The standard is written in film thickness: once grease reaches a set depth the run has to be cleaned and proven again. In the crowded roof voids off Broad Street and Asheridge Road, a wipe of the canopy and filters never reaches the ductwork behind them, where the grease that carries fire quietly gathers. We work the whole Chesham run through hatches already in place and others we cut, bring it back to bright metal, note grease depths at fixed stations before and after, and certify to TR19 Grease with the closing figures logged.
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 Chesham hotels, care homes and gyms.
On the ground in Chesham
We are in Chesham's ductwork and plant every week. The proof is the jobs, not the stock photos.
Atmospheric dust had settled into the branch ducts feeding the classrooms at a Chesham primary school, leaving the air stuffy. We cleaned the main supply runs with air whips under negative pressure and fitted fresh panel filters. Indoor air quality picked up across the rooms, and everything was back to normal by the time the doors opened. We fitted the visit around opening time so the day wasn't disrupted.
When it is due
Ductwork rarely warns you politely. In a busy Chesham kitchen these are the tells.
Smells pushing back into the dining room, a canopy that drips onto a Broad Street cookline, extraction that no longer clears the steam, visible grease at the filter edges, or a Chesham insurer or fire risk assessment asking for a TR19 certificate you cannot produce. Cleaning frequency tracks use - a hard-frying Germain Street 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 Chesham 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 Asheridge Road 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 Chesham fire logbook.
Why it matters
Three duties push every Chesham 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 Chesham 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 Broad 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 Chesham 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. Food hygiene inspections by Buckinghamshire Council take in the condition of the building, ventilation included, so a grease-laden system can cost you on the rating an Environmental Health Officer awards - never mind the smell and the dropping extraction your kitchen team works under.
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 Broad Street kitchen sits in a tighter band than a daytime Germain Street cafe. We measure the grease load and confirm your interval.
Yes - from Broad Street and Germain Street kitchens to the offices, schools and industrial units across Chesham and the wider Buckinghamshire.
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 Broad Street and Asheridge Road where the runs are long and awkward.
A dated TR19 certificate, before-and-after photographs of each section, and an access report for your fire logbook - the evidence a Broad Street operator's insurer and fire risk assessor expect.
Yes. We work overnight, early mornings and closing days for the Broad Street and Germain Street kitchens, and around shift patterns at commercial and production sites, at no extra charge for out-of-hours work.
Yes. The fan at the top of an Asheridge Road 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.
Little, if it is planned. We survey the Chesham run first, agree a slot overnight or on a close day, sheet off the kitchen and clean section by section, so a Germain Street cookline is back in service for the next shift.
Local knowledge
The first mills and factories in Chesham stood at Waterside at the south end of town, drawing on the River Chess - Shute's silk mill took its water from artesian wells before the Royal Bucks Laundry held the site for the best part of a century. Modern premises hide their dust and grease inside sealed ductwork instead, where it builds unseen until airflow fails or fire finds a path. We clean and inspect ventilation and extract ductwork across the town, then hand over photographic before-and-after evidence of every run. What the old mill air carried in the open now gathers out of sight, and only inspection brings it back to light.
Phoenix Duct Clean · by the numbers
Tell us about your kitchen and your schedule. No-obligation quote, UK-wide.