Greater London · TR19 inspections and grease testing

TR19 inspections and grease testing in Cowley, Greater London

TR19 inspection for businesses, landlords and public buildings in Cowley. CHAS, SafeContractor and ISO 9001, and fully insured.

  • Insurance renewals needing proof of TR19 cleaning
  • Ductwork where grease may be over the TR19 limits
  • Systems cleaned on a calendar with no measurements

Book TR19 inspection in Cowley

The process

Our technicians bring everything the work needs, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. On site, the work takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. For a job in Cowley, tell us about loading bays, permits, lifts and roof access when you book.

  1. The visit is arranged for when the kitchen is not busy.
  2. We look over the canopy, plenum, ducts, fan and discharge.
  3. Grease thickness is measured at set points by WFTT or DTT.
  4. Each test point and any access problems are photographed.
  5. We send a report setting out the readings, photos and next steps.

How to prepare

  • Make sure someone can let us in and lock up afterwards
  • Dig out any earlier paperwork for the system
  • Let us know about permits to work or site inductions

Ask for a quote

To help us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Then ring 0345 646 2711 or use the quote form.

Ask for a quote

Advice

About our TR19 inspection in Cowley

A grease test measures how thick the grease is inside a kitchen extract system. We use the Wet Film Thickness Test (WFTT) or the Deposit Thickness Test (DTT), taking readings at set points. From the numbers, you can see whether cleaning is due. Typical jobs include post-clean verification after another contractor’s clean and extracts that have never been grease tested, on access surveys, pre-clean surveys and post-clean checks.

Kitchens in Cowley, like many across London, can share a building with flats or offices, with the duct running up through shared risers. Grease in a duct like that is a fire risk to the whole building, not just the kitchen, so a regular TR19® clean protects everyone in it.

It’s worth checking any contractor’s accreditations. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, with full insurance on top.

Five Duct Doctor technicians in navy uniforms with the company vans
Location
Cowley (UB8, UB7, UB10)
Wider area
Greater London
Reporting
Certificate plus before-and-after pictures
Price
Fixed quote, usually within a working day
Working hours
Nights, weekends or holidays to suit you
Phone
0345 646 2711
Reviewed
30 October 2026

Different parts, different methods

Canopy and plenum

We look over the canopy, inside and out, and note where grease has gathered.

Horizontal duct runs

Grease settles on the floor of horizontal ducts as the air cools. Readings are taken along each run through its access panels.

Looking after it afterwards

Once we’ve finished, these simple steps help:

  • Tell us if menus or opening hours change
  • Clean grease off the canopy between professional cleans
  • Book the next test on the date in the report
  • Share inspection reports with your insurer or broker when asked

The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.

Keep certificates, reports and readings in one place so you can produce them quickly.

Questions from Cowley

Which environmental health team covers Cowley?

The local authority for Cowley is Hillingdon council, and its environmental health team does the inspecting. It helps to keep the extract cleaning records with your food safety paperwork, so they’re ready if asked for.

Is parking a problem for work in Cowley?

A loading bay, a visitor permit or off-street space near the site in Cowley makes the visit easier to plan. If the building has a loading slot system, we will book into it.

Can you come out in an emergency?

Yes. There’s a 24/7 emergency line for anything that can’t wait until a planned visit. Ring any time and tell us what’s happened.

How far ahead should we book?

The more notice, the better, especially for out-of-hours work. Quotes typically come back within one working day, and there’s a 24/7 line for emergencies.

How much does TR19 inspection cost in Cowley?

Every site is different, so each gets its own fixed quote. To get one, call us on 0345 646 2711 or send us an email and tell us about the site and its opening hours.

What is a WFTT or DTT grease test?

Grease thickness testing measures the layer of grease on the duct surfaces, by WFTT or DTT. The results are given in microns.

Is TR19 cleaning the law?

No, not in itself. But the responsible person must assess and reduce fire risk under the Fire Safety Order 2005, which in a kitchen includes grease in the extract. Many insurance policies also require TR19 adherence.

What grease levels does TR19 allow?

TR19® Grease says grease should not go over a mean of 200 microns between cleans. Any reading of 500 microns or more needs immediate spot cleaning.

What TR19 inspection can’t fix

An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:

  • A faulty or failing extract fan
  • Parts of the duct nobody can reach yet
  • Installation problems, which fall under design guidance such as DW172

If you are not sure, just ring 0345 646 2711 or drop us a line and we will give you a straight answer.

Where we work

  • Wet film thickness tests
  • Insurer audits
  • Post-clean checks
  • Access surveys
  • Pre-clean surveys
  • Deposit thickness tests

What affects the quote in Cowley

We quote each job individually. This is what makes a difference:

  • Whether several sites go on one quote
  • Whether we need access equipment or extra panels
  • The scale of the work
  • Where the site is and how we reach it

Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Ask for a fixed quote and we will explain each part.

What to send for a quote

There’s no need for technical detail. It helps if you can send:

  • The postcode and the type of business
  • The roof, plant room or outside wall the system runs to
  • Close-ups of filters, grilles, hatches or access panels
  • Your opening hours and when the area is out of use

There’s no standard price list, because every site is different. Instead, we look at your site first, from pictures or a survey, and then send you a fixed quote. To start, ring 0345 646 2711, or email photos.

Cowley kitchens: local notes

According to Food Standards Agency records, there are about 20 bars, pubs and nightclubs and about 5 hotels and B&Bs in and around Cowley, up to about a mile and a half out. Wherever they cook, the canopy, duct and fan collect grease just as a restaurant’s do. Most London extract cleaning happens at night, after the last service. Food hygiene inspections in Cowley are the job of Hillingdon council’s environmental health team. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Our report lists what was cleaned and when, which is useful to have ready.

Church and community hall kitchens, near Church of St Laurence or anywhere around Cowley, are easy to forget, but their extracts collect grease like any other. If you run catering at a historic house or estate in the area (Ickenham Hall is about 2.9 miles north-east), event kitchens in older buildings often have awkward duct runs that need planning.

Cowley is about 2 miles south-west of Hillingdon, in Greater London. Cowley gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. Across Greater London, we cover 764 places, and Cowley is one of them. London is in our area too, around 17 miles away.

We cover every part of the UB8, UB7 and UB10 postcode area for TR19 inspection and the roads nearby. We cover sites on Iver Lane, High Road and The Avenue and the roads around them. Nearby, we also carry out TR19 inspection in Uxbridge (1 mile north), Yiewsley (1 mile south-east), Hillingdon (2 miles north-east), Thorney (2 miles south) and New Denham (2 miles north). Further out, we also cover City of Westminster (14 miles east), Marylebone (14 miles east), Kensington (12 miles east), Hampstead (13 miles east), Ruislip (5 miles north-east) and Brompton (14 miles east).

Around Cowley

Locally, jobs take us to businesses close to The Crown pub, Uxbridge High School and West Middlesex College, among other places. Cowley’s nearest station is West Drayton station, roughly 1.3 miles south of the centre. A little further out are British Airways Heritage Collection (0.7 miles north-west) and The Chimes (1.3 miles north). Open spaces near Cowley include Uxbridge Moor and Northala Fields.

Map of Cowley © OpenStreetMap contributors

What happens if it’s left?

If a kitchen in Cowley has been cleaned on the same calendar for years, there’s no way to know if that interval is right without measuring. Testing gives you the evidence to set it properly. 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 photos or on site, and the price is agreed before we start.

Why Cowley businesses choose us

  • One number for every site across the South East and London
  • CHAS, SafeContractor and ISO 9001
  • Full insurance on every job
  • In business since 2009

Take a look at what affects the cost or how to check a contractor.

Do you need TR19 inspection in Cowley?

TR19® is the benchmark that insurers, fire officers and EHOs refer to. It is not legislation; the legal duty comes from the Fire Safety Order 2005, under which the responsible person must reduce fire risk, and grease in the extract is part of that risk.

If you notice any of these, it’s worth a diagnosis:

  • Systems that need surveying before cleaning
  • Sites with gaps in their extract records
  • Kitchen extract systems with no recent grease readings
  • Ductwork where grease may be over the TR19 limits

For schools such as Cowley St Laurence CofE Primary School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.

Questions to ask before you book

  • Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
  • Proof of insurance
  • What records you will receive afterwards
  • Whether the quote is based on a survey or photos

Questions to ask before booking

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London