Greater London · TR19 inspections and grease testing
TR19 inspections and grease testing in Lissenden Gardens, Greater London
TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification for commercial sites in Lissenden Gardens and across Greater London. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Pre-clean surveys before a first TR19 clean
- Heavy grease suspected in the plenum or ducts
- Sites with gaps in their extract records
How the job changes from site to site
Canopy and plenum
Clean-looking filters do not mean a clean plenum. That is why we test behind them.
Vertical risers
Risers in multi-storey buildings can pass through other areas, so we arrange access ahead of time.
TR19 inspection for kitchens and businesses in Lissenden Gardens
BESA sets minimum cleaning intervals by daily use: heavy use (12 to 16 hours a day) every 3 months, moderate use (6 to 12 hours) every 6 months and light use (2 to 6 hours) every 12 months. Grease testing shows whether your kitchen needs cleaning more often than that. If you are dealing with insurers asking for TR19 evidence and surveys needed before quoting a full clean, we can help.
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. For a kitchen in Lissenden Gardens, that usually means a longer system to clean and more access panels to plan around.
The paperwork matters as much as the work. Each visit is written up with pictures, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s to hand when an insurer or inspector asks.
- Location
- Lissenden Gardens (NW5, NW3, N19)
- Region
- Greater London
- Reporting
- TR19® certificate and photo report
- Quotes
- A fixed quote up front
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What affects the quote in Lissenden Gardens
The quote reflects the site in front of us. We consider:
- How many systems or sites are involved
- One-off work versus a regular cycle
- The condition of the system
- The times the site is available
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered, and you’ll get one fixed quote.
Helping us quote
When you contact us, it’s useful to have:
- Your opening hours and when the area is out of use
- Wide photos of the system and the area around it
- The paperwork from the last visit, if you have it
- The roof, plant room or outside wall the system runs to
Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. Then we send a fixed price, before any work starts.
Managing agents and facilities teams in Lissenden Gardens
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
We regularly work with managing agents. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
Nearby places to Lissenden Gardens
Also in Lissenden Gardens
How the visit works
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. The visit takes around an hour or two per canopy and duct system. Expect the work in Lissenden Gardens to happen after your last customer leaves, not during trading.
- 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 cannot reach.
- The findings go into a report with readings, photos and a recommended next clean.
Before we arrive
- Make sure someone can let us in and lock up afterwards
- Let us know about parking and loading
- Mention any locked doors, roof access or ceiling voids
Ask for a quote
Quotes are quick. Call or email with a few details and you will usually have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Related advice
In-house cleaning or a specialist?
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
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.
What TR19 inspection looks like in Lissenden Gardens
Food Standards Agency records list about 684 restaurants, cafés and works canteens and about 324 takeaways and sandwich shops in and around Lissenden Gardens, up to about a mile and a half out. A WFTT or DTT reading tells each of those kitchens whether its grease is staying under the 200-micron mean. London jobs usually start after the last service, with loading and roof access agreed with the building first. Lissenden Gardens sits within the area of London Fire Brigade. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel.
For schools such as Parliament Hill School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed. A hall kitchen that only cooks for events, whether near Highgate Road Chapel or elsewhere in Lissenden Gardens, still needs its extract cleaned, just less often. Commuter trade near Gospel Oak station can mean long cooking hours, and long hours put a kitchen into BESA’s more frequent cleaning bands.
Lissenden Gardens is about 1 mile east of Hampstead, in Greater London. Lissenden Gardens gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with photos. 764 places in Greater London are on our list, large and small.
Our technicians cover all of the NW5, NW3 and N19 postcode area for TR19 inspection and the roads nearby. That includes premises on Rona Road, Dale Road and Fleet Road and the roads around them. Nearby, we also carry out TR19 inspection in Gospel Oak (1 mile south), Dartmouth Park (1 mile north-east), Tufnell Park (1 mile east), Kentish Town (1 mile south) and Chalk Farm (1 mile south). Within a short drive, we also cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Near you in Lissenden Gardens
Around Lissenden Gardens, our work takes us to kitchens and buildings near Parliament Hill, The Royal School and Gospel Oak Primary School and the streets around them. Other local landmarks include The Bull and Last pub (under half a mile north-east) and Cecil Sharp House (1.3 miles south). There’s a railway station in Lissenden Gardens itself: Gospel Oak station. Well-known places in the area include Royal Northern Hospital (1.2 miles east) and Montfichet's Tower (3.7 miles south-east). Green spaces nearby include Parliament Hill and The Long Water.
Why it’s worth doing now in Lissenden Gardens
If there’s a fire or a claim, your insurer may ask for TR19 records. Missing records can put a claim at risk. An up-to-date inspection report is a good place to start. In Lissenden Gardens, as across London, ductwork often passes through shared risers and other people’s space.
What you pay depends on how big the system is, the condition it’s in and how easy it is to reach. We give you a fixed price before work begins, so there are no surprises.
Why choose Duct Doctor in Lissenden Gardens
- Fully insured
- A written report with pictures after each visit
- We diagnose before we treat
- One contact for all your sites in London and the South East
Read how cleaning jobs are priced or our accreditations and certificates.
When something else is needed
Not every problem is solved by TR19 inspection, and we’d rather say so up front. It will not put right:
- Installation problems, which fall under design guidance such as DW172
- Fan breakdowns, which need a repair visit
- Fire safety duties beyond the extract system
Not sure which it is? You can call us on 0345 646 2711 or use the quote form and we’ll tell you honestly.
What we work on in Lissenden Gardens
- Access surveys
- Insurer audits
- Wet film thickness tests
- Pre-clean surveys
- Deposit thickness tests
- Post-clean checks
Lissenden Gardens: your questions answered
Do you clean school canteen extracts around Lissenden Gardens out of term?
Yes, out-of-term visits are normal for schools. There are about 69 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Lissenden Gardens. Tell us your holiday dates and we will book the visit for when the site is empty.
Is parking a problem for work in Lissenden Gardens?
A loading bay, a visitor permit or off-street space near the site in Lissenden Gardens makes the visit easier to plan. Much of our London work is done overnight, which helps.
What happens on a pre-clean survey?
We look at the system from canopy to discharge, take grease readings and check access. It lets us plan the clean and send you a fixed quote.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
How much does TR19 inspection cost?
Every site is different, so each gets its own fixed quote. For a quote, call us on 0345 646 2711 or email us and tell us about the site and its opening hours.
How do you protect the area?
With sheeting and covers, before anything else happens. The work is kept contained and clean down when we finish.
Which sectors do you work in?
Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.
How much notice should we give?
The more notice, the better, particularly for night and weekend visits. We typically quote within one working day, and there’s a 24/7 line for emergencies.