Greater London · TR19 inspections and grease testing

TR19 inspections and grease testing in Welling, Greater London

TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification in Welling, surveyed first and signed off with a written report and photos. Call for a fixed quote.

  • Checking the result of a recent clean
  • Systems cleaned on a calendar with no measurements
  • Ductwork where grease may be over the TR19 limits

Need TR19 inspection in Welling?

What a clean won’t put right

A few issues sit outside what this work can do:

  • The responsible person’s own fire risk assessment
  • Parts of the duct nobody can reach yet
  • Installation problems, which fall under design guidance such as DW172

If you’re not sure, just give us a ring on 0345 646 2711 or use the quote form and we will give you a straight answer.

Parts of the system we cover

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

How we handle TR19 inspection in Welling

Post-clean verification is a check carried out once the cleaning is done, with new readings and pictures of the cleaned areas. It gives you evidence of how the system was actually left. Typical jobs include kitchens whose menu or hours have changed and systems that need surveying before cleaning, across pre-clean surveys, deposit thickness tests and wet film thickness tests.

Across London, many commercial kitchens are squeezed into basements and narrow back-of-house spaces, and the duct may run up through several floors before it discharges at the roof. In Welling, as elsewhere in the capital, a long duct run means more access points to open and more grease to remove.

We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.

Place
Welling (DA16, DA15, DA6)
Region
Greater London
Paperwork
TR19® certificate and photo report
Price
A fixed quote up front
When we work
Overnight and weekend work, 24/7 emergency callout
Phone
0345 646 2711
Page updated
30 October 2026
Five Duct Doctor technicians in navy uniforms with the company vans

How it works

Each visit runs to the same pattern: protect the area, make the system safe, do the work, tidy up and leave you the report. On site, the work takes around an hour or two per canopy and duct system. Night and weekend working is normal for us in London, and a site in Welling is no exception.

  1. First we book a time that won’t disrupt cooking.
  2. Every part of the system is examined, end to end.
  3. Grease readings are taken at set points using WFTT or DTT.
  4. Photos are taken at each point, and access gaps noted.
  5. The findings go into a report with readings, photos and a recommended next clean.

Before we arrive

  • Name a contact who can let us in at the agreed time
  • Make sure equipment near the work can be switched off and left to cool
  • Mention any sign-in, permit or induction we need

Getting a quote

Here’s what helps us quote: the address, the type of site and when it’s open, pictures of the system and the last certificate or report, if there is one. Then call us on 0345 646 2711 or email us.

Ask for a quote

Advice

How the job changes from site to site

Schools, hospitals and care homes

Hospital and care home kitchens can cook all day, every day. Testing shows if the cleaning interval keeps pace.

Horizontal duct runs

Flat duct runs collect grease along their base. Readings are taken along each run through its access panels.

Common questions in Welling

Is parking a problem for work in Welling?

Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Working overnight, as we often do in London, usually makes it simpler.

Who inspects food businesses in Welling?

In Welling, it’s Bexley 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.

How much notice do you need?

The more notice, the better, especially for out-of-hours work. We typically quote within one working day, and emergencies are covered by our 24/7 line.

Is Welling in your area?

Yes. Our technicians work in Welling, within the South East and London area we cover.

When should we have our next grease test?

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.

How long does a TR19 inspection take?

An inspection takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. Large or multiple systems take longer, so ring 0345 646 2711 or use the quote form and we will plan it.

Can the work be done while we’re closed?

Yes, and that is how we prefer to work. The visit is timed for when the area is not in use, whether that is late evening, overnight or a weekend.

What does a pre-clean survey involve?

We survey, measure and photograph the system first. We can work from pictures and details, or visit, as suits the job.

Welling kitchens: local notes

The Food Standards Agency lists about 43 bars, pubs and nightclubs as registered food businesses in Welling and the streets around it, up to about 1.5 miles out. Any of them serving cooked food has an extract to keep clean, from canopy to discharge. Fire safety in Welling falls to 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. In Welling, food businesses are inspected by environmental health officers from Bexley council. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Before-and-after pictures from each clean are a simple way to show the extract is in hand.

Where a hall near St John's Church, or anywhere in Welling, hosts lunch clubs or events, its extract gathers grease just as a café’s does. For kitchens close to Welling station, where the day often starts early and ends late, the extract can be cleaned overnight.

Welling is about 9 miles east of London, in Greater London. Every kind of commercial site in Welling, TR19 inspection is something we can help with. Visits can be booked for evenings, overnight or weekends so the site keeps running. We cover 764 places across Greater London, from busy centres to quieter spots. London is in our area too, around 9 miles away.

Work in DA16, DA15 and DA6 is surveyed, quoted and booked the same way as anywhere else. If you need TR19 inspection at premises on Days Lane, Hook Lane and Lyme Road or a nearby road, we can help. You’ll find Welling on the A207, which makes it straightforward for our technicians to reach for TR19 inspection. Other places close to Welling include Crook Log (1 mile east), Blendon (1 mile south-east), Upton (1 mile east), Bexleyheath (1 mile east) and West Heath (1 mile north-east). Within a short drive, we also cover London (9 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (9 miles north-west).

Around Welling

Around Welling, our work takes us to kitchens and buildings near Nags Head pub, Danson Park and Bexley Grammar School. The closest station to Welling is Welling station, roughly 0.5 miles north-west of the centre. A little further out are Greenwich Castle (5 miles west) and Broadway Shopping Centre (1.6 miles east). Green spaces nearby include The Tarn and Summer Hill.

Map of Welling © OpenStreetMap contributors

Between visits

To keep the system working properly between visits:

  • Look out for grease drips round the canopy edge
  • Clean grease off the canopy between professional cleans
  • Share inspection reports with your insurer or broker when asked
  • Clean or swap grease filters as often as the kitchen needs

Readings of 500 microns or more are highlighted as needing immediate spot cleaning, and we can arrange it.

When cooking hours or the menu change, check the interval still fits. A quick grease test answers the question.

What we’re called out for in Welling

Grease is fuel. Flames from the range can be pulled into the canopy and travel through the ducts to other parts of the building. Knowing how much there is lets you act before it becomes a hazard.

Signs it’s time to call us include:

  • Kitchens whose menu or hours have changed
  • Systems that need surveying before cleaning
  • Extracts that have never been grease tested
  • Parts of the system left out of past cleans

Healthcare kitchens, like those at hospitals such as Bexley Hospital (about 0.9 miles east), often cook for long hours, which puts them in BESA’s heavier-use bands.

What to look for in a quote

  • What happens if part of the system cannot be accessed
  • How VAT is shown on the quote
  • Proof of accreditation you can verify
  • Exactly which parts of the system are covered

Choosing a duct cleaning contractor

What affects the cost of TR19 inspection

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

  • What state the system is in
  • Any permits to work or inductions
  • A single visit or a regular plan
  • Access, including roofs, risers and ceiling voids

One small site or a whole estate, we price it on the same basis: the work involved, the access and the timing. The price is fixed before any work starts.

Asking for a quote

When you call or email, it’s useful to have:

  • A few general shots of the system
  • How we’d reach plant on a roof or in a plant room
  • The paperwork from the last visit, if you have it
  • The postcode and the type of business

Quoting starts with a diagnosis, from your photos and details or, where that isn’t enough, a survey on site. Then we send a fixed price, before any work starts.

In-house cleaning or a specialist?

Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.

A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.

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