Buckinghamshire · TR19 inspections and grease testing
TR19 Inspection in The City
TR19 inspection for The City and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Ask us for a fixed quote.
- Kitchens whose menu or hours have changed
- Insurance renewals needing proof of TR19 cleaning
- Confirming a clean reached the whole system
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. A few tips:
- Have the latest report ready for insurance renewals
- Flag changes in how much frying the kitchen does
- Diary the next grease test and clean
- Look out for grease drips round the canopy edge
Each report suggests the next clean and the next test, based on the readings and how the kitchen is used.
Fit access panels where the survey finds sections cannot be reached, so every part of the duct can be cleaned.
How we handle TR19 inspection in The City
After a clean, post-clean verification checks the result, with fresh grease readings, pictures and a look at the areas that were cleaned. It gives you evidence of how the system was actually left. Typical jobs include post-clean verification after another contractor’s clean and surveys needed before quoting a full clean, across deposit thickness tests, wet film thickness tests and insurer audits.
Work in a small place like The City starts with a call to agree access and timings, and the clean itself is the same full TR19® job as in any town: canopy to discharge, then a TR19® certificate and a photo report.
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.
- Location
- The City (HP14)
- Region
- Buckinghamshire
- Paperwork
- Certificate and photo report
- Price
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
The process
Each visit runs to the same pattern: protect the area, isolate whatever needs isolating, do the work, tidy up and hand over the paperwork. On site, the work takes a morning or less for one kitchen, more where there are several systems. Visits to a village like The City are booked in advance, at a time that suits whoever runs the site.
- The visit is arranged for when the kitchen is not busy.
- The system is checked from canopy to discharge.
- Grease readings are taken at set points using WFTT or DTT.
- Photos are taken at each point, and access gaps noted.
- We send a report setting out the readings, photos and next steps.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Arrange a key holder or contact on site
- Tell us about site rules, permits or sign-in
Ask for a quote
To help us quote: the address, the type of site and when it’s open, a few photos and the last certificate or report, if there is one. Then call 0345 646 2711 or drop us a line.
Advice
What the work involves, part by part
Vertical risers
Risers can be hard to get into. We record what can and can’t be reached.
Extract fan and discharge
The extract fan and its housing collect grease too. We check and test them as part of the inspection.
Questions from The City
Who is the fire and rescue service for The City?
Fire safety enforcement in The City is handled by Buckinghamshire Fire and Rescue Service. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Do you work in villages like The City?
Yes, we work in villages as well as towns, and The City is covered. Let us know about access, parking and anything unusual about getting there when you book.
Can you verify a clean after it’s been done?
A post-clean check records grease readings and photos after the work, for our cleans and other firms’ alike.
What is TR19?
TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
What happens if you cannot reach some of it?
We never leave them off the paperwork. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
Can you quote from pictures?
Yes, for many jobs. Send wide shots, close-ups of any access panels and anything that worries you, and a fixed quote usually follows within one working day. Some sites still need a visit, and we’ll say so.
How do you keep the site clean during the work?
By covering it before any work starts. We keep the work contained and clean down when we finish.
What do you do with what you remove?
We contain it and take it with us. Grease, debris and waste water are collected as the work goes on, so it does not spread.
Leave it or put it right?
Without readings, you’re guessing when to clean. Any reading of 500 microns or more needs immediate spot cleaning under TR19® Grease, and you can only act on that if you’ve measured it. A fault that closes a site in a village like The City affects everyone who depends on it.
The cost depends on the size of the system, what state it’s in and how easy it is to reach. You get a fixed price before work begins, so you know where you stand.
What you get with us
- Fully insured
- Ventilation hygiene specialists since 2009
- One contact for all your sites in London and the South East
- Fixed quotes, typically within one working day
Take a look at what affects the cost or how to check a contractor.
What TR19 inspection cannot fix
We won’t sell you work that does not address the problem, so these are the things it will not cover:
- Parts of the duct nobody can reach yet
- A faulty or failing extract fan
- Installation problems, which fall under design guidance such as DW172
If in doubt, phone us on 0345 646 2711 or use the quote form and we’ll say what we think before you book.
Where we work
- Insurer audits
- Access surveys
- Post-clean checks
- Wet film thickness tests
- Pre-clean surveys
- Deposit thickness tests
Grease, kitchens and The City
There are about 4 cafés, restaurants and staff canteens across The City and its immediate surroundings (about a mile and a half), according to the Food Standards Agency’s register. A WFTT or DTT reading tells each of those kitchens whether its grease is staying under the 200-micron mean. Food hygiene inspections in The City are the job of Buckinghamshire council’s environmental health team. They look at how clean the premises and equipment are, and the kitchen extract is part of that. A TR19® certificate and photo report after each clean gives you a record to show an inspector. Buckinghamshire Fire and Rescue Service covers The City. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
If you run a church or community hall kitchen, near Church of St Paul or elsewhere in The City, its extract still collects grease from every lunch and event. If you look after a school kitchen, at a school such as Radnage Church of England Primary School or anywhere near The City, the holidays are the usual time for a TR19® clean.
The City is about 5 miles north-west of High Wycombe, in Buckinghamshire. Every kind of commercial site in The City, TR19 inspection is something we can help with. We can work out of hours so trading isn’t interrupted. Our area takes in 263 places across Buckinghamshire, large and small. Reading is in our area too, around 15 miles away.
All of HP14 is within our area for TR19 inspection, from the main roads to the quietest streets. That includes premises on Bottle Square Lane, Radnage Common Road and Green Lane and the roads around them. We also cover Waterend (1 mile west), Beacon's Bottom (1 mile south-west), Radnage (1 mile north), Bennett End (1 mile north-west) and Green End (1 mile south-east). Larger places within reach include Aylesbury (11 miles north), High Wycombe (5 miles south-east), Chesham (11 miles east), Marlow (7 miles south-east), Amersham (11 miles east) and Beaconsfield (10 miles east).
Near you in The City
Typical jobs here are in premises near The Crown pub and the streets around them. The nearest railway station is Saunderton station, roughly 1.8 miles north-east of the centre. Well-known places in the area include Wycombe Hospital (5 miles south-east). For a walk, there’s Yoesden and Bald Hill.
Do you need TR19 inspection in The City?
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.
Clients normally contact us when they notice one of these:
- Systems that need surveying before cleaning
- Systems cleaned on a calendar with no measurements
- Insurance renewals needing proof of TR19 cleaning
- Parts of the system left out of past cleans
Healthcare kitchens, like those at hospitals such as Wycombe Hospital (about 5 miles south-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
- Whether the whole system is included, or only the parts that are easy to reach
- What insurance they carry
- Whether the figure could change on the day
Managing agents and facilities teams in The City
Whether it’s one building or many, you get the same standard: diagnosis, a fixed price, work booked around your hours and a written report with photos.
Facilities teams in offices, schools and healthcare sites book us too in The City and across Buckinghamshire. Work can be phased by floor, building or site around the people who use them.