Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in St Leonards, Hertfordshire
TR19 inspection for businesses, landlords and public buildings in St Leonards. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Extracts that have never been grease tested
- Pre-clean surveys before a first TR19 clean
- Extracts that may be over the 200 micron mean
What happens if it’s left?
Surveying first means the clean goes to plan. Missing access panels, hidden duct runs and awkward fans are found before the cleaners arrive, so the clean covers the whole system. It’s worth booking a check, because nobody sees inside a duct day to day.
The cost depends on the size of the system, what state it’s in and how easy it is to reach. We give you a fixed price before any work starts, so you know where you stand.
Why book with us
- Fixed quotes from a survey or photos
- One number for every site across the South East and London
- A written report with pictures after each visit
- Accredited under CHAS and SafeContractor, with ISO 9001
Read how cleaning jobs are priced or how to check a contractor.
TR19 inspection for kitchens and businesses in St Leonards
BESA sets minimum cleaning intervals by daily use: 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. We are often asked to deal with systems cleaned on a calendar with no measurements and pre-clean surveys before a first TR19 clean, across wet film thickness tests, insurer audits and pre-clean surveys.
For a kitchen in or near St Leonards, 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, filters, duct, fan and discharge, with a certificate and photo report at the end.
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 carry full insurance.
- Where
- St Leonards (HP23)
- Wider area
- Hertfordshire
- Paperwork
- TR19® certificate and photo report
- Quotes
- A fixed quote up front
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Common problems we fix in St Leonards
You cannot judge grease thickness by eye. A system can look clean at the filters and be heavily coated further in, so readings are the reliable guide.
If you notice any of these, it’s worth a diagnosis:
- Sites with gaps in their extract records
- Cleaning intervals that may not suit the kitchen
- Checking the result of a recent clean
- Insurers asking for TR19 evidence
Volunteers running a hall kitchen near Church of St Leonard, or anywhere in St Leonards, may not know when the extract was last cleaned, and a grease test settles it.
What to look for in a quote
- What happens if part of the system cannot be accessed
- Whether VAT is included
- When the next visit should be, and why
- When they can work, and whether that’s outside your opening hours
In-house cleaning or a specialist?
Logging matters as much as cleaning. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
Places near St Leonards
What else we do in St Leonards
Landlords, agents and facilities managers
From a single site to a large estate, the standard is the same: a survey first, a fixed quote, the work timed around the site and a report with photos.
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 each one has its own record.
What we do, step by step
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the job 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 St Leonards.
- Post-clean verification is booked once the clean is done.
- We open the access points used on the clean.
- Grease readings are taken again at set points.
- We photograph each area to record how it was left.
- The results are reported, with anything missed flagged.
Getting ready for the visit
- Clear loose items from the work area
- Mention any locked doors, roof access or ceiling voids
- Dig out any earlier paperwork for the system
Getting 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. Add the site type and your opening hours, and we can price many jobs without a visit.
Advice
What TR19 inspection cannot fix
Before booking, it helps to know what’s not included:
- The grease itself, which needs a full or spot clean
- Fire safety duties beyond the extract system
- Fan breakdowns, which need a repair visit
Not sure which it is? You can call 0345 646 2711 or email us and we’ll tell you honestly before you book.
Parts of the system we cover
- Post-clean checks
- Access surveys
- Wet film thickness tests
- Pre-clean surveys
- Insurer audits
- Deposit thickness tests
Aftercare tips
Results last longer with the right care. We suggest:
- Clean or swap grease filters as often as the kitchen needs
- Diary the next grease test and clean
- Report grease dripping from the canopy
- Have the latest report ready for insurance renewals
Each report suggests the next clean and the next test, based on the readings and how the kitchen is used.
Close the access gaps found during inspection, so every part of the duct can be cleaned.
St Leonards: your questions answered
Can the work in St Leonards be done at night or at weekends?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Your opening times are the first thing we ask for.
Who inspects food businesses in St Leonards?
Kitchens in St Leonards are inspected by Buckinghamshire council’s environmental health officers. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
Can you quote from pictures?
Yes, if we can see what we need. If not, a site survey comes first, and the quote follows that.
Is St Leonards in your area?
Yes. We work in St Leonards and across Hertfordshire, as part of our work across South East England and London. To book, call 0345 646 2711, or email photos.
How much notice do you need?
Book as early as you can for planned work, especially if the next clean or test is due soon. For emergencies, we take calls 24/7.
What is post-clean verification?
After a clean, we take new readings and photos to show how the system was left. It can follow our own cleans or another contractor’s.
Do you offer emergency callouts?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we will talk you through the next steps.
How do you keep the site clean during the work?
By covering it before any work starts. The work is kept contained and leave the area clean.
Kitchen extracts in St Leonards
St Leonards is covered by Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. About 31 miles out from central London, St Leonards is part of the South East area we work across. 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 (Cholesbury Manor House is about 1.1 miles east), event kitchens in older buildings often have awkward duct runs that need planning. If you run catering at a healthcare site, such as a hospital like Chiltern Hospital about 4.7 miles south, the extract may need cleaning more often than a part-time kitchen.
St Leonards is about 4 miles north-west of Chesham, in Hertfordshire. Wherever you are in the HP23 postcode area, we can take on TR19 inspection. We cover 381 places across Hertfordshire, large and small. We also work in Milton Keynes, around 20 miles away.
All of HP23 is covered for TR19 inspection, from busy streets to back roads. TR19 inspection is available to premises on Bottom Road, Gilbert's Hill and Jenkins Lane and the roads around them. We also cover the places around St Leonards: Buckland Common (1 mile east), Cholesbury (1 mile east), Hastoe (1 mile north), Swan Bottom (1 mile south-west) and Lee Common (2 miles south). Further out, we also cover Watford (14 miles south-east), Hemel Hempstead (9 miles east), St Albans (15 miles east), Harpenden (15 miles east), Berkhamsted (5 miles east) and Rickmansworth (12 miles south-east).
Around St Leonards
In St Leonards, that means kitchens and buildings near White Lion Public House, among other places. The closest station to St Leonards is Wendover station, about 2.9 miles west of the centre. A little further out are Trenchard Museum (2.2 miles north-west) and Hawridge Court (2.5 miles south-east). For a walk, there’s Dancersend Nature Reserve and Pavis Wood.