Greater London · TR19 inspections and grease testing
TR19 inspections and grease testing in Hounslow, Greater London
TR19 inspection for businesses, landlords and public buildings in Hounslow. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Pre-clean surveys before a first TR19 clean
- Missing access panels found on survey
- Extracts that have never been grease tested
What the work involves, part by part
Restaurants, pubs and hotels
Inspections are done when the kitchen is closed or quiet so trading is not affected.
Extract fan and discharge
A greasy fan works harder and wears faster. The inspection shows whether it needs cleaning now.
TR19 inspection in Hounslow, done properly
Grease thickness testing tells you how much grease is sitting in the canopy, ducts and fan. Readings are taken at set points using the Wet Film Thickness Test (WFTT) or the Deposit Thickness Test (DTT). The results show whether the system needs cleaning and how soon. Common call-outs are for checking the result of a recent clean and extracts that may be over the 200 micron mean, on post-clean checks, deposit thickness tests and wet film thickness tests.
London kitchens tend to trade late and open early, so extract cleaning in Hounslow is usually done overnight, after the last service. Before the clean, we agree loading, parking and roof access with whoever manages the building.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Where
- Hounslow (TW3, TW7, TW2)
- Wider area
- Greater London
- Paperwork
- Certificate and photo report
- Quotes
- Fixed quote, normally within a working day
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Why it’s worth doing now in Hounslow
A pre-clean survey avoids surprises on the night. Access problems are spotted in advance rather than on the night, so the clean covers the whole system. Every month a London system goes without attention adds to what has to be done later.
The price reflects the work, not guesswork. That is why we survey first, from pictures or on site, and the price is agreed before work begins.
Why choose Duct Doctor in Hounslow
- Fully insured
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fixed quotes from a survey or photos
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
See what affects the cost and our accreditations and certificates.
Your questions about TR19 inspection in Hounslow
Who carries out food hygiene inspections in Hounslow?
Kitchens in Hounslow are inspected by Hounslow council’s environmental health officers. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.
Can school kitchens in Hounslow be cleaned in the holidays?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 40 schools and colleges with food registrations within roughly a mile and a half of Hounslow. Send us your term dates when you call 0345 646 2711, or send details by email, and we will fit the work in.
How often should a kitchen extract be inspected?
That varies with the kitchen’s daily use. BESA’s minimum cleaning intervals are every 3, 6 or 12 months for heavy, moderate and light use, and grease readings help set the real interval.
Will you produce a report for our insurer?
Yes. We inspect the system and produce a report with grease readings, pictures and any inaccessible areas. It’s set out for your insurer or broker.
Can you work evenings and weekends?
Yes. Give us your opening hours with your enquiry and we will plan the visit around them.
What accreditations do you have?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
How much notice should we give?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
What if parts of the system cannot be reached?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
Signs you need TR19 inspection in Hounslow
You can’t judge grease thickness by eye. Clean filters can hide a heavy layer behind them, so readings are the reliable guide.
The symptoms we’re asked about most are:
- Kitchen extract systems with no recent grease readings
- Ductwork where grease may be over the TR19 limits
- Insurers asking for TR19 evidence
- Sites with gaps in their extract records
Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; South Middlesex Hospital is the nearest hospital to Hounslow, about 0.9 miles south-east.
What your quote should include
- Whether the price is fixed
- What records you will receive afterwards
- When they can work, and whether that is outside your opening hours
- Whether inaccessible sections are listed on the report
What we do, step by step
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we are in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes around an hour or two per canopy and duct system. A name and number for whoever controls access to the building in Hounslow saves time on the night.
- We agree a time when the kitchen is closed or quiet.
- Every part of the system is examined, end to end.
- We take WFTT or DTT readings at set points along the system.
- We photograph the test points and record any sections we can’t reach.
- You get a report with readings, pictures and recommendations.
Preparing for the visit
- Agree a time when the area can be out of use
- Mention any sign-in, permit or induction we need
- Mention any locked doors, roof access or ceiling voids
Get a fixed quote
If you need TR19 inspection in Hounslow, phone us on 0345 646 2711, or email photos. Let us know the site type and the opening hours, plus pictures or the previous report if they’re to hand. A fixed quote usually follows within one working day.
Read more
Staff cleaning versus specialist work
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they don’t reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
Staff cleaning doesn’t replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you cannot see still need a specialist at the right interval.
What affects the quote in Hounslow
There’s no set price list, because sites vary so much. What we look at:
- A single visit or a regular plan
- The condition we find in the survey
- When the work can happen, such as evenings, overnight or weekends
- How many systems or sites are involved
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all make a difference.
Asking for a quote
When you contact us, it’s useful to have:
- Your last certificate, test record or report
- The times we could work without disrupting the site
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Any access panels or hatches you can see
Quoting starts with a diagnosis, either from photos and details you send or from a site visit. Then we send a fixed price so you know the cost before any work starts.
What a clean won’t put right
We will not sell you work that doesn’t address the problem, so here are the limits:
- Installation problems, which fall under design guidance such as DW172
- Fan breakdowns, which need a repair visit
- Removing the grease, which is a separate clean
Not sure which it is? You can call us on 0345 646 2711, or send details by email and we will tell you honestly.
Parts of the system we cover
- Insurer audits
- Access surveys
- Deposit thickness tests
- Wet film thickness tests
- Pre-clean surveys
- Post-clean checks
TR19 inspection around Hounslow
Look up Hounslow on the FSA’s food hygiene register and you will find about 313 cafés, restaurants and staff canteens and about 111 takeaways across Hounslow and its immediate surroundings (about a mile and a half). Each kitchen extract among them can be measured for grease to set the right cleaning interval. Hounslow is covered by London Fire Brigade. 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. Food hygiene inspections in Hounslow are the job of Hounslow council’s environmental health team. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Our report lists what was cleaned and when, which is useful to have ready.
For kitchens close to Hounslow station, where the day often starts early and ends late, the extract can be cleaned overnight. Term dates shape school work: for a school like Chatsworth Primary School, an extract clean fits neatly into a half-term or summer break.
Hounslow is about 9 miles west of City of Westminster, in Greater London. For TR19 inspection in and around Hounslow, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711 or use the quote form. We work across South East England and London, including Hounslow. Across Greater London, we cover 764 places, Hounslow among them. For sites nearby, see our London page, about 11 miles away.
All of TW3, TW7 and TW2 is covered for TR19 inspection, from the main roads to the quietest streets. Streets in the area include New Road, Ivy Road and Bell Road, all of which we cover for TR19 inspection. If your site is just outside Hounslow, we cover Woodlands (1 mile north-east), Ivybridge (1 mile south-east), Lampton (1 mile north-west), Isleworth (1 mile east) and Spring Grove (1 mile north). Larger places within reach include London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles east), St Pancras (11 miles east) and Shoreditch (12 miles east).
Near you in Hounslow
In Hounslow, that means kitchens and buildings near Moon Under Water pub, Kingsley Academy and Inwood Park, among other places. For rail, the closest station is Hounslow station, about 0.6 miles south-west. Other landmarks nearby include Museum of Army Music (0.8 miles south) and South Middlesex Hospital (0.9 miles south-east). The countryside around Hounslow includes Garden Lake and Richmond Hill.