Hertfordshire · TR19 inspections and grease testing
TR19 inspections in Northchurch
TR19 inspection in Northchurch from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Missing access panels found on survey
- An insurer’s request for a TR19 audit
- Extracts that may be over the 200 micron mean
The process
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. The visit itself takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. Tell us when your site near Northchurch is quiet and the visit will be booked for then.
- After the clean, we arrange a time to check the system.
- 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
- Mention any sign-in, permit or induction we need
- Let us know how we reach the system, including roofs, risers and plant rooms
- Name a contact who can let us in at the agreed time
Getting a quote
Need a price for TR19 inspection? Please ring 0345 646 2711, or email photos with a few details about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
Advice
How we handle TR19 inspection in Northchurch
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 pre-clean surveys, insurer audits and deposit thickness tests, and common reasons people get in touch are systems that need surveying before cleaning and systems cleaned on a calendar with no measurements.
Size doesn’t change the work: a kitchen in a place like Northchurch gets the whole system cleaned, canopy to discharge. The visit is booked around your opening hours, and the journey is planned ahead.
Accreditations are easy to claim and worth checking. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Northchurch (HP4)
- Region
- Hertfordshire
- Records
- Certificate and photo report
- Quote
- Fixed quote, normally within a working day
- When we work
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Common problems we fix in Northchurch
Some parts of a system are hard to reach, so those sections can be skipped time and again. An inspection of a system in Northchurch shows where access panels are missing, so the gaps can be closed.
If you notice any of these, it’s worth a diagnosis:
- Kitchens whose menu or hours have changed
- Checking the result of a recent clean
- Systems that need surveying before cleaning
- Parts of the system left out of past cleans
A hospital like Hemel Hempstead Hospital, about 5.2 miles east, is the kind of site where a kitchen may cook for patients, staff and visitors all day.
What your quote should include
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- What hours they’ll be on site
- When the next visit should be, and why
- If they look at the system before pricing
Also near Northchurch
Other services in Northchurch
Leave it or put it right?
If there’s a fire or a claim, your insurer may ask for TR19 records. Without them, a claim can be reduced or refused. An up-to-date inspection report is a good place to start. Booking ahead lets us plan the trip to Northchurch at a time that suits you.
We don’t list prices on the website, because each job is priced on what it involves. For a fixed quote, call 0345 646 2711, or email photos, and we’ll explain what it covers.
Why choose Duct Doctor in Northchurch
- One contact for all your sites in London and the South East
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Every job surveyed first
- Ventilation hygiene specialists since 2009
Read our cost guide or how to check a contractor.
Between visits
How long the results last depends on use and care. Here’s what we suggest:
- Store grease readings where your insurer can see them
- Tell us if menus or opening hours change
- Keep the route to access panels clear
- Keep canopy edges and gutters wiped down
After the inspection, we send a report showing each reading, its location and photos. File it alongside your TR19 certificates.
Keep filters clean and in place. Missing or damaged filters let grease straight into the plenum.
What the work involves, part by part
Extract fan and discharge
We look at where the extract discharges outside, as grease can build up there too.
Restaurants, pubs and hotels
Kitchens that cook for long hours build up grease faster. Regular testing shows whether the cleaning interval keeps up.
Northchurch questions
Do you do school kitchen extract cleaning in Northchurch in the summer holidays?
Yes. The holidays are the usual time for school work. Around Northchurch, the Food Standards Agency lists about 10 schools and colleges with registered kitchens within a mile and a half or so. Just phone us on 0345 646 2711, or email photos with your term dates and we’ll plan around them.
Which council inspects kitchens in Northchurch?
Kitchens in Northchurch are inspected by Dacorum council’s environmental health officers. It helps to keep the extract cleaning records with your food safety paperwork, so they’re ready if asked for.
How much time does an inspection need?
As a guide, it takes around an hour or two per canopy and duct system. The size of the system and the access make the difference.
Can you set up regular visits?
Yes, of course. Send details of the systems and how they’re used and we will propose a schedule with a fixed quote.
What happens to the waste?
We contain it and take it with us. We collect grease, debris and waste water as we go rather than letting it spread.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Do you offer emergency callouts?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we will talk you through the next steps.
Can you price the work without visiting?
Yes, where the pictures show enough. If not, a site survey comes first, and the quote follows that.
Multi-site and managed buildings
Facilities teams in offices, schools and healthcare sites book us too across Hertfordshire. Larger estates can be phased building by building around the people who use them.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
Northchurch kitchens: local notes
The Food Standards Agency lists about 10 bars, pubs and nightclubs as registered food businesses within 1.5 miles or so of the middle of Northchurch. Breakfasts, bar meals and functions all put grease into the extract wherever they’re cooked. The fire and rescue service for Northchurch is Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Environmental health officers from Dacorum council inspect food businesses in Northchurch. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Before-and-after photos from each clean are a simple way to show the extract is in hand.
Where a hall near Church of Saint Mary, or anywhere in Northchurch, hosts lunch clubs or events, its extract gathers grease just as a café’s does. If you run catering at a historic house or estate in the area (Cholesbury Manor House is about 3 miles west), event kitchens in older buildings often have awkward duct runs that need planning.
Northchurch is about 1 mile north-west of Berkhamsted, in Hertfordshire. Sites in Northchurch get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Northchurch is one of 381 places in Hertfordshire we cover for commercial clients. Milton Keynes is in our area too, about 20 miles from Northchurch.
All of HP4 is covered for TR19 inspection, from the main roads to the quietest streets. Streets in the area include New Road, Dell Road and Bell Lane, all of which we cover for TR19 inspection. Other places close to Northchurch include Berkhamsted (1 mile south-east), Norcott Hill (1 mile north), Ashley Green (2 miles south), Ashridge (2 miles north-east) and Frithsden (3 miles east). We also work in nearby towns such as Watford (11 miles south-east), Hemel Hempstead (6 miles east), St Albans (11 miles east), Harpenden (11 miles east), Hatfield (15 miles east) and Borehamwood (15 miles south-east).
What’s near Northchurch
In Northchurch, that means kitchens and buildings near Saint George And The Dragon Public House and Ashlyns School and the streets around them. Northchurch’s nearest station is Berkhamsted station, about 1.2 miles east of the centre. Other landmarks nearby include Hemel Hempstead Hospital (5.2 miles east) and Hawridge Court (2.4 miles south-west). Green spaces nearby include Pavis Wood and Sands Bank.
Honest limits
Some problems need a different service or another trade:
- Design faults in the extract system
- Heavy deposits found on test, which still need cleaning
- Parts of the duct nobody can reach yet
If in doubt, call 0345 646 2711, or email photos and we will say what we think.
Where we work
- Wet film thickness tests
- Post-clean checks
- Insurer audits
- Deposit thickness tests
- Pre-clean surveys
- Access surveys