Greater London · TR19 inspections and grease testing
Isleworth TR19 inspection
TR19 inspections and grease testing for Isleworth, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Checking the result of a recent clean
- Kitchen extract systems with no recent grease readings
- Sites with gaps in their extract records
TR19 inspection for kitchens and businesses in Isleworth
After a clean, post-clean verification checks the result, with fresh grease readings, photos and a look at the areas that were cleaned. It gives you evidence of how the system was actually left. The work covers insurer audits, access surveys and wet film thickness tests, and common reasons people get in touch are parts of the system left out of past cleans and checking the result of a recent clean.
London kitchens are often tucked into basements or the back of a building, with extract ducts that can climb several floors to discharge at roof level. For a kitchen in Isleworth, that typically means a longer system to clean and more access panels to plan around.
Nothing is signed off by word of mouth: a dated report with photos of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Place
- Isleworth (TW7, TW1, TW3)
- Wider area
- Greater London
- Paperwork
- Certificate plus before-and-after pictures
- Quote
- A fixed price before work begins
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Your questions about TR19 inspection in Isleworth
Do you work at weekends in Isleworth?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Isleworth needn’t be disturbed. Let us know the hours you are closed and we’ll book within them.
Which environmental health team covers Isleworth?
The local authority for Isleworth is Hounslow council, and its environmental health team does the inspecting. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
How much does TR19 inspection cost in Isleworth?
The cost depends on the size of the system, its condition, access and timing. Call for a fixed quote, typically ready within one working day.
Which kinds of sites do you work on?
Any site with a kitchen or a ventilation system to look after, from a single café to a large school. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
Can you verify a clean after it’s been done?
We visit after a clean, take readings at set points and photograph the system. Any areas that weren’t cleaned properly are flagged.
Can you inspect our extract for our insurance company?
Yes, for kitchens across the South East and London. Tell us what your insurer has asked for and we will set the report out to match.
Do you look at the system first?
Yes. For many sites, pictures and a few details are enough, while bigger or harder-to-see systems are surveyed on site.
Is a quote from pictures possible?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Larger or hidden systems need a survey on site first.
TR19 inspection around Isleworth
Food Standards Agency records list about 437 cafés, restaurants and staff canteens and about 107 takeaways within about 1.5 miles of central Isleworth. Where they cook under a canopy, a grease reading is the way to tell whether the extract is due a clean. Environmental health officers from Hounslow council inspect food businesses in Isleworth. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Keeping each certificate and photo report on file helps show the extract is looked after. London Fire Brigade covers Isleworth. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
Commuter trade near Isleworth station can mean long cooking hours, and long hours put a kitchen into BESA’s more frequent cleaning bands. If you run catering at a healthcare site, such as a hospital like West Middlesex University Hospital about less than half a mile north-east, the extract may need cleaning more often than a part-time kitchen.
Isleworth is about 2 miles north of Twickenham, in Greater London. Whether your site is in the middle of Isleworth or further out, TR19 inspection is available to all kinds of commercial premises, from small sites to large estates. Our Greater London coverage runs to 764 places, and Isleworth is one of them. For sites nearby, see our London page (10 miles or so).
Our technicians cover all of the TW7, TW1 and TW3 postcode area for TR19 inspection and the roads nearby. That includes premises on Upper Square, London Road and Shire Horse Way and nearby roads. We also cover the places around Isleworth: Woodlands (1 mile west), St Margarets (1 mile south-east), Ivybridge (1 mile south-west), Spring Grove (1 mile north-west) and Hounslow (1 mile west). Within a short drive, we also cover London (10 miles east), City of Westminster (8 miles east), Marylebone (9 miles north-east), Kensington (6 miles east), St Pancras (10 miles north-east) and Shoreditch (12 miles east).
Near you in Isleworth
Around Isleworth, our work takes us to kitchens and buildings near The George Inn, Kneller Hall Junior School and Gumley House RC Convent School. There’s a railway station in Isleworth itself: Isleworth station. A little further out are West Middlesex University Hospital (less than half a mile north-east) and Museum of Army Music (1.4 miles south-west). The countryside around Isleworth includes Richmond Hill and Kew Gardens Lake.
What staff can safely do
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We can diagnose it and quote.
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
Leave it or put it right?
An EHO visit, an insurance renewal or a fire risk assessment is a bad time to find your extract records are thin. An inspection now gives a site in Isleworth a current picture. London buildings are shared, so a fire or failure in one system can reach the neighbours above and beside you.
The price reflects the work, not guesswork. That’s why we survey first, from photos or on site, and the price is agreed before any work starts.
Why choose Duct Doctor in Isleworth
- Fixed quotes, normally within one working day
- Survey first, then a fixed quote
- Ventilation hygiene specialists since 2009
- A single point of contact for sites across the South East and London
Take a look at our cost guide and how to check a contractor.
Landlords, agents and facilities managers
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
Honest limits
TR19 inspection cannot fix everything, and we’ll tell you before we start. It will not put right:
- Fan breakdowns, which need a repair visit
- Fire safety duties beyond the extract system
- Installation problems, which fall under design guidance such as DW172
Not sure which it is? You can give us a ring on 0345 646 2711, or email photos and we’ll tell you honestly.
Where we work
- Wet film thickness tests
- Insurer audits
- Deposit thickness tests
- Pre-clean surveys
- Post-clean checks
- Access surveys
Do you need TR19 inspection in Isleworth?
Some parts of a system are hard to reach, so those sections can be skipped time and again. A survey finds the sections that cannot be reached, so panels can be fitted.
It’s time to book a visit if you see:
- Extracts that may be over the 200 micron mean
- Missing TR19 certificates or history
- Post-clean verification after another contractor’s clean
- Pre-clean surveys before a first TR19 clean
School kitchens, at schools like St Mary's Catholic Primary School for example, are typically cleaned in the holidays so no lunches are lost.
Before booking anyone
- What insurance they carry
- How they set the interval to the next visit
- If the quote is a fixed price or an estimate
- How areas they cannot reach will be recorded
What we do, step by step
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes an hour or two for a single kitchen, longer for a large or complex system. A name and number for whoever controls access to the building in Isleworth saves time on the night.
- We go through any past certificates and reports.
- The layout is traced from the canopy to the discharge.
- Access panels are located and any missing ones noted.
- We measure the grease and photograph each point.
- You get a report and a fixed quote for the clean.
Getting ready for the visit
- Tell us where we can park and unload
- Let us know when the site is closed or quiet
- Let us know how we reach the system, including roofs, risers and plant rooms
How to get a quote
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Related advice
Places near Isleworth
Other services in Isleworth
How the job changes from site to site
Horizontal duct runs
Grease settles on the floor of horizontal ducts as the air cools. We test at points along the run through access panels.
Vertical risers
Access to risers is often limited. We record what can and can’t be reached.