Hertfordshire · TR19 inspections and grease testing
TR19 Inspection in Wilstone
For TR19 inspections and grease testing in Wilstone, one call is all it takes: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Parts of the system left out of past cleans
- Confirming a clean reached the whole system
- Pre-clean surveys before a first TR19 clean
How we handle TR19 inspection in Wilstone
BESA’s minimum cleaning frequencies depend on how long the kitchen cooks each day: every 3 months for heavy use of 12 to 16 hours a day, every 6 months for moderate use of 6 to 12 hours, and every 12 months for light use of 2 to 6 hours. Grease testing shows whether your kitchen needs cleaning more often than that. The work covers deposit thickness tests, post-clean checks and access surveys, and the jobs we see most are systems that need surveying before cleaning and sections of duct that can’t be reached.
Work in a small place like Wilstone 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.
Good records are part of the job. Each visit is written up with pictures, listing what was done, anything we couldn’t reach and when the next visit is due. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.
- Place
- Wilstone (HP23)
- Region
- Hertfordshire
- Records
- Certificate and photo report
- Price
- A fixed price before we start
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Why deal with it now?
Without readings, you are guessing when to clean. If grease reaches 500 microns anywhere, TR19® Grease calls for immediate spot cleaning, which you won’t know without measuring. Our emergency line runs 24/7, but a planned visit to Wilstone is calmer for everyone.
Kitchens, offices, schools and hospitals are all priced the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will explain each part.
Why choose Duct Doctor in Wilstone
- Fixed quotes from a survey or pictures
- A single point of contact for sites across the South East and London
- We’re fully insured
- Trading since 2009
In-house cleaning or a specialist?
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, and that’s where we come in.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That’s our job.
Your questions about TR19 inspection in Wilstone
Who carries out food hygiene inspections in Wilstone?
That is Dacorum council, whose environmental health officers carry out food hygiene inspections in Wilstone. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Can you work in Wilstone outside opening hours?
Yes, we can come after you close and finish before you open. The work in Wilstone can fit around your hours. Your opening times are the first thing we ask for.
Do you work in Wilstone?
Yes. Our technicians work in Wilstone, within the South East and London area we cover.
How often should grease be tested?
Often enough to know the mean stays under 200 microns between cleans. The readings themselves tell you if the interval needs to change.
Do you offer maintenance contracts?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.
Do we have to follow TR19 by law?
No, not in itself. The Fire Safety Order 2005 still requires the responsible person to manage fire risk, and grease in the extract is part of that. Many insurers also expect TR19 cleaning.
What if parts of the system cannot be reached?
The report shows them clearly. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
What does a pre-clean survey involve?
It’s a look at the whole extract before it’s cleaned, with readings and photos. The survey can be done from photos and details or on site, as suits the job.
Towns and villages near Wilstone
What else we do in Wilstone
How the job changes from site to site
Horizontal duct runs
Sections without access are recorded so it can be fixed before the clean.
Schools, hospitals and care homes
In healthcare and care settings, kitchens may run from early until late. Testing shows if the cleaning interval keeps pace.
The process
Before we leave, we walk the area with whoever is on site. We point out anything that couldn’t be reached or needs a follow-up, and the same goes into the written report. All told, the work takes an hour or two for a single kitchen, longer for a large or complex system. Rural roads and tight entrances are worth telling us about before a visit to Wilstone.
- First we look at the system’s cleaning history, if there is one.
- The layout is traced from the canopy to the discharge.
- We note where access panels are and where more are needed.
- We measure the grease and photograph each point.
- We report back with readings and a fixed quote.
Getting ready for the visit
- Have your last certificate or report to hand
- Make sure equipment near the work can be switched off and left to cool
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Get a fixed quote
If you need TR19 inspection in Wilstone, call us on 0345 646 2711 or email us. Tell us what kind of premises it is and when it’s open, and send pictures or your last report if you can. We typically send a fixed quote within one working day.
Read more
What we’re called out for in Wilstone
TR19® is the benchmark that insurers, fire officers and EHOs refer to. It isn’t legislation; the legal duty comes from the Fire Safety Order 2005, under which the responsible person must reduce fire risk, and grease in the extract is part of that risk.
The symptoms we are asked about most are:
- Ductwork where grease may be over the TR19 limits
- Surveys needed before quoting a full clean
- Cleaning intervals that may not suit the kitchen
- An insurer’s request for a TR19 audit
If you run catering at a historic house or estate in the area (Cholesbury Manor House is about 4.6 miles south), event kitchens in older buildings often have awkward duct runs that need planning.
What to look for in a quote
- Proof of accreditation you can verify
- Whether the whole system is included, or only the parts that are easy to reach
- Whether the figure could change on the day
- What insurance they carry
TR19 inspection around Wilstone
There are about 4 restaurants, cafés and canteens within roughly a mile and a half of the centre of Wilstone, according to the Food Standards Agency’s register. Where they cook under a canopy, a grease reading is the way to tell whether the extract is due a clean. Food hygiene inspections in Wilstone are the job of Dacorum council’s environmental health team. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. A TR19® certificate and photo report after each clean gives you a record to show an inspector. Wilstone 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.
A hospital like Tindal Centre, about 4.9 miles west, is the kind of site where a kitchen may cook for patients, staff and visitors all day. Bursars and site managers at schools such as Marsworth Church of England Infant School tend to book extract cleaning for when the kitchen is empty.
Wilstone is about 5 miles east of Aylesbury, in Hertfordshire. We carry out TR19 inspection for commercial premises of every kind in Wilstone and the rest of Hertfordshire. Wilstone is one of 381 places in Hertfordshire where we work for TR19 inspection. For sites nearby, see our Milton Keynes page, about 15 miles away.
Work in HP23 is surveyed, quoted and booked the same way as anywhere else. Local streets include Barton Close, Tring Road and Rosebarn Lane, and we cover them all for TR19 inspection. Nearby, we also carry out TR19 inspection in Gubblecote (1 mile north), Startop's End (1 mile east), Tringford (1 mile south-east), Marsworth (1 mile east) and Drayton Beauchamp (1 mile south). Further out, we also cover Hemel Hempstead (11 miles south-east), Harpenden (14 miles east), Berkhamsted (6 miles south-east), Chorleywood (14 miles south-east), Grovehill (10 miles south-east) and Woodhall Farm (10 miles south-east).
What’s near Wilstone
Locally, jobs take us to businesses close to The Half Moon Public House and Tring School, among other places. The closest station to Wilstone is Cheddington station, roughly 3 miles north-east of the centre. Well-known places in the area include Tindal Centre (4.9 miles west) and Pitstone Green Museum (2.2 miles north-east). Not far away are College Lake nature reserve and Pavis Wood.
Honest limits
In fairness, some problems need a different fix:
- Fan breakdowns, which need a repair visit
- Removing the grease, which is a separate clean
- The responsible person’s own fire risk assessment
Not sure which it is? You can phone us on 0345 646 2711 or use the quote form and we’ll tell you honestly before booking.
Parts of the system we cover
- Post-clean checks
- Deposit thickness tests
- Access surveys
- Wet film thickness tests
- Pre-clean surveys
- Insurer audits
Between visits
Here’s the after-treatment advice, short and simple:
- Have the latest report ready for insurance renewals
- Mention new equipment or longer hours at the next test
- Diary the next grease test and clean
- Wipe the canopy surfaces regularly
Any access problems we found are listed with a suggested fix. Fitting them before the next clean means the whole system gets done.
Clean, correctly fitted filters stop more grease reaching the duct. Gaps around filters let grease get past them.