Hertfordshire · TR19 inspections and grease testing

TR19 inspections and grease testing in Watford, Hertfordshire

We cover Watford for TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification. Out-of-hours visits, a fixed quote and a written report with pictures on every job.

  • Extracts that have never been grease tested
  • Pre-clean surveys before a first TR19 clean
  • Ductwork where grease may be over the TR19 limits

TR19 inspection in Watford

How it works

The first job on site is protection: sheeting goes over floors and surfaces close to the work. After that, the system is made safe and the work begins. The work on site takes an hour or two for a single kitchen, longer for a large or complex system, and the area is cleaned down before we leave. Town-centre sites in a place like Watford can be tight for parking, so it helps to know the options in advance.

  1. Post-clean verification is booked once the clean is done.
  2. We open the access points used on the clean.
  3. We repeat the WFTT or DTT readings.
  4. Photos are taken to show the condition after the clean.
  5. We report the findings and flag any areas that need more work.

Getting ready for the visit

  • Name a contact who can let us in at the agreed time
  • Let us know when the site is closed or quiet
  • Move anything stored near the system

How to get a quote

Quotes are quick. Call or email with a few details and you’ll typically have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.

Get a quick quote

Related advice

TR19 inspection for kitchens and businesses in Watford

Many insurers ask for proof that kitchen extract systems are cleaned and inspected to TR19®. Without it, a claim can be refused or reduced. Our TR19 audits give sites in Watford and across Hertfordshire a clear record of the system’s condition. If you’re dealing with checking the result of a recent clean and extracts that have never been grease tested, we can put it right, from wet film thickness tests, deposit thickness tests and pre-clean surveys onwards.

Kitchens in a place the size of Watford are cleaned around trading, not the other way round: late at night, early in the morning or on a closed day. Bigger sites can be done kitchen by kitchen, so cooking carries on elsewhere.

Accreditations are easy to claim and worth checking. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.

Where
Watford (WD25, WD19, WD18, WD17)
Region
Hertfordshire
Records
TR19® certificate and photo report
Price
A fixed price before any work starts
Hours
Overnight and weekend work, 24/7 emergency callout
Telephone
0345 646 2711
Reviewed
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

Questions from Watford

Do you clean school canteen extracts around Watford out of term?

Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 40 schools and colleges with food registrations within roughly a mile and a half of Watford. Tell us your holiday dates and we’ll book the visit for when the site is empty.

Who would carry out a food hygiene inspection at a kitchen in Watford?

In Watford, it’s Watford council that carries out food hygiene inspections. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.

Do you work in Watford?

Yes. Watford is part of the area we cover, as part of our area across London and the South East.

How do you measure grease in a kitchen extract?

It’s a measurement of how much grease is coating the inside of the extract, using the Wet Film Thickness Test (WFTT) or Deposit Thickness Test (DTT). The results are given in microns.

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 testing shows if your kitchen needs more.

Can you set up regular visits?

Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.

How far ahead should we book?

Book as early as you can for planned work, particularly if your next visit is nearly due. Emergencies are different, because our line is open 24/7.

What do you need from me for a quote?

Only a few details: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. After that, simply give us a ring on 0345 646 2711, or email photos.

Between visits

No system stays clean for ever, but care slows the build-up. A few tips:

  • Send TR19 audit reports to your insurer on request
  • Don’t box in or cover duct access panels
  • Flag changes in how much frying the kitchen does
  • File every inspection report with your certificates

After the inspection, we send a report showing each reading, its location and pictures. File it alongside your TR19 certificates.

Revisit the cleaning interval whenever the menu or hours change. A quick grease test answers the question.

Grease, kitchens and Watford

The FSA’s food hygiene register includes about 43 pubs, bars and clubs and about 7 hotels, B&Bs and guest houses within 1.5 miles or so of the middle of Watford. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. Watford is covered by Hertfordshire Fire and Rescue Service. 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. Kitchens in Watford get their food hygiene inspections from Watford council. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. A dated certificate in the maintenance file answers the question before it’s asked.

Church and community hall kitchens, near Church of St Andrew or anywhere around Watford, are easy to forget, but their extracts collect grease like any other. If you cook for passing trade around Watford Junction station, the extract can be cleaned between your last and first customer.

Watford is about 17 miles north-west of London, in Hertfordshire. Sites in Watford get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Our Hertfordshire coverage runs to 381 places, Watford among them. For sites nearby, see our London page (17 miles or so).

Every address in WD25, WD19, WD18 and WD17 is within our area for TR19 inspection, from the main roads to the quietest streets. If you need TR19 inspection at premises on Station Road, Church Road and The Parade High Street or anywhere close by, our technicians can take on the work. Watford sits on or near the A41 and A405, which makes travel easy for TR19 inspection. Close by, we work in North Watford (1 mile north-east), Meriden (1 mile north-east), Oxhey (2 miles south-east), Garston (2 miles north) and Watford Heath (2 miles south). Further out, we also cover Hemel Hempstead (7 miles north-west), St Albans (7 miles north-east), Welwyn Garden City (13 miles north-east), Harpenden (11 miles north), Cheshunt (15 miles east) and Hatfield (10 miles north-east). Being one of Hertfordshire’s larger places, Watford has a wide mix of commercial premises, all within our area for TR19 inspection.

Around Watford

We work in commercial kitchens and buildings around The Watford UTC, Cassiobury Park and The Estcourt Arms. Watford has its own railway station: Watford Junction station. Well-known places in the area include Hilfield Castle (2.8 miles east) and Charter Place (0.5 miles south). Green spaces nearby include Harrow Weald Common.

Map of Watford © OpenStreetMap contributors

What we’re called out for in Watford

Grease in a duct is flammable fuel. A flare-up on the range can be drawn into the canopy and duct, and from there a fire can spread through the ductwork. Knowing how much there is lets you act before it becomes a hazard.

Clients usually contact us after spotting something like this:

  • Uncertainty over how often to clean
  • Insurers asking for TR19 evidence
  • Confirming a clean reached the whole system
  • Missing TR19 certificates or history

If you run catering at a healthcare site, such as a hospital like Watford General Hospital about 1.1 miles south, the extract may need cleaning more often than a part-time kitchen.

Comparing quotes

  • Whether the figure could change on the day
  • When the next visit should be, and why
  • How areas they can’t reach will be recorded
  • Whether the quote shows VAT

Choosing a duct cleaning contractor

Why it’s worth doing now in Watford

Sites in Watford that have never measured grease cannot tell whether their cleaning interval suits the kitchen. Testing gives you the evidence to set it properly. A regular plan for a site in Watford spreads the work out and keeps every system on track.

Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll explain each part.

Why us?

  • A fixed price before any work starts
  • CHAS and SafeContractor accredited, with ISO 9001
  • One number for every site across the South East and London
  • Survey first, then a fixed quote

Read how cleaning jobs are priced or how to check a contractor.

Different parts, different methods

Extract fan and discharge

The extract fan and its housing collect grease too. They’re included in the readings and pictures.

Canopy and plenum

We look over the canopy, inside and out, with readings where grease collects.

What affects the quote in Watford

The survey tells us what the work involves. We look at:

  • A single visit or a regular plan
  • How many systems or sites are involved
  • The condition we find in the survey
  • The size of the system

Combining work into one visit or one programme can make for a more efficient booking. Mention every system or site you need covered and we’ll price it together.

What we need to know

To help us quote quickly, send us:

  • Any symptoms, from odd noises to smells or leaks
  • When the site is open and when it’s quiet
  • The postcode and the type of business
  • Detail shots of panels, filters and grilles

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 give you a fixed quote. To start, call us on 0345 646 2711 or send us an email.

What your team can do, and what needs us

Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.

Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.

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