Hertfordshire · TR19 inspections and grease testing
TR19 Inspection in Belsize
TR19 inspections and grease testing in Belsize, surveyed first and signed off with a written report and photos. Ask us for a fixed quote.
- Heavy grease suspected in the plenum or ducts
- Checking the result of a recent clean
- Surveys needed before quoting a full clean
How we handle TR19 inspection in Belsize
A fixed schedule does not always match how a kitchen really cooks. Some kitchens build up grease faster than the minimum intervals assume, which is why measurement matters. Our readings give your risk assessment real numbers to work from. The work covers post-clean checks, deposit thickness tests and insurer audits, and common reasons people get in touch are missing TR19 certificates or history and kitchen extract systems with no recent grease readings.
Somewhere as small as Belsize, commercial kitchens are few: perhaps a pub, a school or care home kitchen, or a hall used for events. Every one of them still needs its extract kept clear of grease, whatever the size of the place.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Belsize (WD3, WD4)
- Region
- Hertfordshire
- Paperwork
- Certificate and photo report
- Quote
- A fixed price before we start
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Staff cleaning versus specialist work
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, and that’s where we come in.
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you can’t see still need a specialist at the right interval.
Different parts, different methods
Restaurants, pubs and hotels
BESA’s minimum for heavy use of 12 to 16 hours a day is a clean every 3 months, with testing showing whether more is needed.
Schools, hospitals and care homes
Inspections are planned around mealtimes and holidays to avoid disruption.
What TR19 inspection cannot fix
To be straight with you, there are a few things this work won’t fix:
- Parts of the duct nobody can reach yet
- A faulty or failing extract fan
- Removing the grease, which is a separate clean
Not sure which it is? You can phone us on 0345 646 2711 or send us an email and we will tell you honestly before you book.
What the work covers
- Insurer audits
- Post-clean checks
- Wet film thickness tests
- Pre-clean surveys
- Access surveys
- Deposit thickness tests
Kitchen extracts in Belsize
According to Food Standards Agency records, there are about 7 bars, pubs and nightclubs within roughly a mile and a half of the centre of Belsize. Where they serve hot food, their kitchen extracts need cleaning to TR19® like any restaurant’s. Belsize is covered by Hertfordshire Fire and Rescue Service. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel. Food hygiene inspections in Belsize are the job of Three Rivers council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Our report lists what was cleaned and when, which is useful to have ready.
Healthcare kitchens can’t easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Belsize is Hemel Hempstead Hospital, about 4 miles north. Historic houses near Belsize, such as Chenies Manor House about 2 miles south-west, are a reminder that older buildings with event kitchens can have long, awkward duct routes.
Belsize is about 3 miles north of Chorleywood, in Hertfordshire. Anywhere in WD3, we can take on TR19 inspection. We cover 381 places across Hertfordshire, large and small. Our London page covers sites nearby, about 22 miles away.
Work in WD3 and WD4 is surveyed, quoted and booked the same way as anywhere else. Whether your site is on Plough Lane, Bragmans Lane and Poles Hill or anywhere close by, our technicians can take on the work. Nearby, we also carry out TR19 inspection in Flaunden (1 mile west), Chenies (2 miles south-west), Latimer (2 miles south-west), Chorleywood (3 miles south) and Little Chalfont (3 miles south-west). Within a short drive, we also cover Watford (5 miles south-east), Hemel Hempstead (4 miles north-east), St Albans (8 miles north-east), Welwyn Garden City (15 miles north-east), Harpenden (11 miles north-east) and Hatfield (12 miles east).
Near you in Belsize
We work in commercial kitchens and buildings around Two Brewers Inn and Kings Langley School. The closest station to Belsize is Kings Langley station, about 2.9 miles east of the centre. A little further out are Hemel Hempstead Hospital (4 miles north). Not far away are Sarratt Bottom nature reserve.
What happens on the day
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes a couple of hours for a typical kitchen extract system. In a small place like Belsize, the journey is planned ahead and the visit arranged around the site’s hours.
- The visit is arranged for when the kitchen is not busy.
- Every part of the system is examined, end to end.
- Grease readings are taken at set points using WFTT or DTT.
- Each test point and any access problems are photographed.
- The findings go into a report with readings, pictures and a recommended next clean.
Before we arrive
- Allow time for equipment near the work to be turned off and cool down
- Dig out any earlier paperwork for the system
- Let us know about permits to work or site inductions
Getting a quote
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 we start.
Read more
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Common questions in Belsize
Is Belsize within the area you cover?
Yes, we work in villages as well as towns, and Belsize is covered. Just mention lanes, gates or anything else about the site when you book.
Do you work at weekends in Belsize?
Yes, evening, overnight and weekend work is normal for us. That way a site in Belsize does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
What’s TR19?
TR19® is the BESA specification for keeping ventilation systems clean. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Can you look after several sites?
Yes. One number covers all your sites in our area, with visits on a regular schedule.
How much notice should we give?
Earlier is better, especially for out-of-hours work. Quotes normally come back within one working day, and emergencies are covered by our 24/7 line.
What does TR19 inspection cost?
We do not publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before we start.
What is grease thickness testing?
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 much time does an inspection need?
Typically, the inspection takes a morning or less for one kitchen, more where there are several systems. The size of the system and the access make the difference.
Why it’s worth doing now in Belsize
A check after cleaning shows whether the work reached every part it should have, while there’s still time to put anything right. Systems in rural buildings are often out of sight and out of mind.
Several systems or sites on one quote often makes better use of the time. Mention every system or site you need covered, and you will get one fixed quote.
Why book with us
- Accredited under CHAS and SafeContractor, with ISO 9001
- Trading since 2009
- We diagnose before we treat
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read what affects the cost and our accreditations and certificates.
Common problems we fix in Belsize
Grease builds up as cooking vapour cools inside the extract. The thickest layers can sit out of sight in the plenum, at bends and along flat runs.
Any of these means the system needs a check-up:
- Heavy grease suspected in the plenum or ducts
- Kitchens taken over with no cleaning records
- An insurer’s request for a TR19 audit
- Kitchen extract systems with no recent grease readings
Bursars and site managers at schools such as Sarratt Church of England Primary School tend to book extract cleaning for when the kitchen is empty.
Before booking anyone
- Whether the quote is based on a survey or pictures
- How areas they can’t reach will be recorded
- Whether VAT is included
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
Landlords, agents and facilities managers
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we will send a fixed quote.
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.