Oxfordshire · TR19 inspections and grease testing
TR19 inspections in Middle Assendon
TR19 inspection for Middle Assendon and the surrounding area: diagnosis first, then a fixed quote, the work and a report with photos. Call for a fixed quote.
- Missing TR19 certificates or history
- Confirming a clean reached the whole system
- Missing access panels found on survey
TR19 inspection for kitchens and businesses in Middle Assendon
Grease thickness testing tells you how much grease is sitting in the canopy, ducts and fan. We use the Wet Film Thickness Test (WFTT) or the Deposit Thickness Test (DTT), taking readings at set points. The results show whether the system needs cleaning and how soon. If you have kitchens taken over with no cleaning records and kitchens whose menu or hours have changed, we can put it right, from deposit thickness tests, pre-clean surveys and post-clean checks onwards.
For a kitchen in or near Middle Assendon, the visit is planned around opening hours and the journey, 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.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Where
- Middle Assendon (RG9)
- Region
- Oxfordshire
- Paperwork
- Certificate and photo report
- Quote
- A fixed quote up front
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
For landlords and multi-site operators
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Each site gets its own report and pictures, so records stay tidy.
We also work for facilities teams across offices, schools and healthcare across Oxfordshire. Larger estates can be phased building by building to keep disruption down.
Signs you need TR19 inspection in Middle Assendon
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.
Common reasons sites call us include:
- Kitchen extract systems with no recent grease readings
- Kitchens taken over with no cleaning records
- Checking the result of a recent clean
- Parts of the system left out of past cleans
Where a hall near Church of St James, or anywhere in Middle Assendon, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
Before you book anyone
- Exactly which parts of the system are covered
- If they look at the system before pricing
- When the next visit should be, and why
- How areas they cannot reach will be recorded
What we do, step by step
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. On site, the work takes around an hour or two per canopy and duct system. In a small place like Middle Assendon, the journey is planned ahead and the visit arranged around the site’s hours.
- 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.
- Grease readings are taken and photos recorded.
- You get a report and a fixed quote for the clean.
Preparing for the visit
- Tell us the best time to work, such as after service or at a weekend
- Dig out any earlier paperwork for the system
- Move anything stored near the system
How to get a quote
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.
Related advice
Middle Assendon questions
Which environmental health team covers Middle Assendon?
In Middle Assendon, it’s Buckinghamshire council that carries out food hygiene inspections. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Which fire service covers Middle Assendon?
That is Oxfordshire Fire and Rescue Service. It’s worth keeping your fire risk assessment, TR19® certificates and photo reports together, ready to show.
Do you check other contractors’ cleans?
A post-clean check records grease readings and pictures after the work, whoever did the clean.
Can you quote from pictures?
Often, yes. With good photos, the site type and your last report, we can price many jobs. Larger or hidden systems need a survey on site first.
What does a pre-clean survey involve?
We check the layout, the grease levels and the access, before anyone starts cleaning. Missing access panels are noted ahead of the clean.
Will you produce a report for our insurer?
Yes. Insurers often want evidence the extract is managed to TR19®, and our audit gives a clear record of the system’s condition, with recommendations where something needs doing.
What is grease thickness testing?
WFTT and DTT are the two methods for measuring grease thickness, in microns. Readings are taken at set points through the system.
Are you accredited?
We hold CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
In-house cleaning or a specialist?
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.
How we price TR19 inspection
The survey tells us what the work involves. We look at:
- Parking and loading at the site
- The number of sites or systems
- Site rules, permits and inductions
- A single visit or a regular plan
When the work has to happen, how we reach it and how big the site is all affect the cost. Each of those is built into the quote, and the price is fixed before any work starts.
What to send for a quote
You don’t need the technical terms. It helps if you can send:
- The site address and the type of premises
- How we’d reach plant on a roof or in a plant room
- A few general shots of the system
- Any access panels or hatches you can see
Getting a quote does not take long. Call or email with a few details and you’ll typically have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Grease, kitchens and Middle Assendon
The fire and rescue service for Middle Assendon is Oxfordshire Fire and Rescue Service. 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. We cover Middle Assendon, about 36 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
If you run catering at a historic house or estate in the area (Greys Court is about 1.8 miles south-west), event kitchens in older buildings often have awkward duct runs that need planning.
Middle Assendon is about 6 miles north of Caversham, in Oxfordshire. From the centre of Middle Assendon to the outskirts, we cover TR19 inspection for every kind of premises, from a single unit to a large public building. 443 places in Oxfordshire are on our list, large and small. We also work in Reading, about 8 miles from Middle Assendon.
TR19 inspection in RG9 is surveyed, quoted and booked the same way as anywhere else. Streets in the area include Fawley Bottom Lane and White Lane, and we cover them all for TR19 inspection. We also cover the places around Middle Assendon: Bix (1 mile south-west), Fawley Bottom (1 mile north-east), Lower Assendon (1 mile south-east), Fawley (1 mile east) and Catslip (2 miles west). Within a short drive, we also cover Didcot (14 miles west), Thame (12 miles north), Henley-on-Thames (3 miles south-east), Benson (8 miles north-west), Chinnor (9 miles north) and Tilehurst (9 miles south-west).
Local landmarks in Middle Assendon
Locally, jobs take us to businesses close to Fawley Court and Temple Island and Rainbow Inn, among other places. The nearest railway station is Henley-On-Thames station, roughly 2.7 miles south-east of the centre. Nearby you’ll also find Frazer Nash Archives (3.1 miles south-east). For a walk, there’s Warburg Nature Reserve.
Between visits
A little care between visits keeps the system in better shape. We recommend:
- Share inspection reports with your insurer or broker when asked
- Keep to the recommended interval
- Look out for grease drips round the canopy edge
- File every inspection report with your certificates
The audit report is set out to pass straight to your insurer or broker, with readings, pictures and any areas not accessible.
Fit access panels where the survey finds sections can’t be reached, so grease is not left building in hidden parts.
Part by part
Extract fan and discharge
We look at where the extract discharges outside, since grease reaches the very end of the system.
Restaurants, pubs and hotels
We test between services, early in the morning or after close so the kitchen keeps cooking.