Hertfordshire · TR19 inspections and grease testing
TR19 inspections in Little Wymondley
TR19 inspection for Little Wymondley, with a survey first and a report with photos at the end. Call for a fixed quote.
- Parts of the system left out of past cleans
- Extracts that may be over the 200 micron mean
- Kitchens whose menu or hours have changed
TR19 inspection in Little Wymondley, done properly
Post-clean verification is a check carried out once the cleaning is done, 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. If you have post-clean verification after another contractor’s clean and parts of the system left out of past cleans, we can help, from access surveys, insurer audits and wet film thickness tests onwards.
Rural kitchens often have long, low duct runs through a roof space or along an outside wall, and those horizontal sections are where grease settles. Access, parking and timings are agreed before the day.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Location
- Little Wymondley (SG4)
- Region
- Hertfordshire
- Paperwork
- TR19® certificate and photo report
- Price
- A fixed quote up front
- When we work
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
What we are called out for in Little Wymondley
Looking at a canopy tells you little about what’s in the duct. Clean filters can hide a heavy layer behind them, so readings are the reliable guide.
If you notice any of these, it’s worth a diagnosis:
- Systems that need surveying before cleaning
- Systems cleaned on a calendar with no measurements
- Extracts that may be over the 200 micron mean
- Kitchens whose menu or hours have changed
Knebworth House, about 4.2 miles south, is one of the historic houses near Little Wymondley; if you run event catering at a venue like that, cleans can be booked between functions.
Questions to ask before you book
- Whether they’re fully insured
- Exactly which parts of the system are covered
- What hours they’ll be on site
- Whether a written report and photos are included
TR19 inspection around Little Wymondley
There are about 7 restaurants, cafés and works canteens and about 7 sandwich bars and takeaways within 1.5 miles or so of the middle of Little Wymondley, according to the Food Standards Agency’s register. Kitchens like these cook for very different hours, and grease testing shows which extracts need cleaning soonest. Food hygiene inspections in Little Wymondley are the job of North Hertfordshire council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Before-and-after pictures from each clean are a simple way to show the extract is in hand. Little Wymondley sits within the area of Hertfordshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; Lister Hospital is the nearest hospital to Little Wymondley, about 1.2 miles south-east. Term dates shape school work: for a school like Wymondley Junior Mixed and Infant School, an extract clean fits neatly into a half-term or summer break.
Little Wymondley is about 2 miles south-east of Hitchin, in Hertfordshire. Little Wymondley gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Our Hertfordshire coverage runs to 381 places, and Little Wymondley is one of them. For sites nearby, see our Milton Keynes page, about 24 miles away.
Work in SG4 follows the same survey, fixed quote and written report as everywhere else we cover. You’ll find streets such as St Marys Church Road, Elms Close and Stevenage Road, and we cover them all for TR19 inspection. Nearby, we also carry out TR19 inspection in Titmore Green (1 mile south), Lower Titmore Green (1 mile south), Great Wymondley (1 mile north), Todd's Green (1 mile south-east) and St Ippolyts (1 mile west). We also work in nearby towns such as Stevenage (3 miles south-east), St Albans (13 miles south), Welwyn Garden City (9 miles south), Harpenden (9 miles south-west), Hoddesdon (15 miles south-east) and Hatfield (12 miles south).
Around Little Wymondley
Around Little Wymondley, our work takes us to kitchens and buildings near Kingshott School, The John Henry Newman School and The Bucks Head Public House, among other places. Little Wymondley’s nearest station is Hitchin station, roughly 1.8 miles north-west of the centre. Other landmarks nearby include Lister Hospital (1.2 miles south-east) and Wymondley Castle (0.6 miles north). Green spaces nearby include Purwell Ninesprings.
Part by part
Extract fan and discharge
We look at where the extract discharges outside, as grease can build up there too.
Horizontal duct runs
Bends and long runs can hold heavy deposits, well away from where anyone looks.
In-house cleaning or a specialist?
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, next to our reports.
Your own staff can handle the daily basics: 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 is where we come in.
How we price TR19 inspection
The diagnosis comes before the price. We look at:
- Site rules, permits and inductions
- Parking and loading at the site
- Whether it’s a one-off visit or part of a schedule
- How many systems or sites are involved
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered, and you’ll get one fixed quote.
Helping us quote
Before you ask for a quote, gather:
- Your opening hours and when the area is out of use
- Your last certificate, test record or report
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- A few general shots of the system
Some systems can be priced from photos; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Aftercare tips
A little care between visits keeps the system in better shape. Our advice:
- Book the next test on the date in the report
- Share inspection reports with your insurer or broker when asked
- Keep access panels clear and unpainted
- Clean or swap grease filters as often as the kitchen needs
Where sections couldn’t be reached, the report says where access panels would help. Fitting them before the next clean means the whole system gets done.
Keep all TR19 records together so you can produce them quickly.
Why it’s worth doing now in Little Wymondley
A pre-clean survey avoids surprises on the night. Missing access panels, hidden duct runs and awkward fans are found before the cleaners arrive, so the clean covers the whole system. Out of sight is the usual reason a rural system goes too long without attention.
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are unsure, ring 0345 646 2711, or send details by email and we will give you an honest view and a fixed quote.
Why Little Wymondley businesses choose us
- Accredited under CHAS and SafeContractor, with ISO 9001
- Work around your opening hours, with 24/7 emergency cover
- A written report with photos after each visit
- One number for every site across the South East and London
See what affects the cost or our accreditations and certificates.
How the visit works
Night work is normal for us. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. The visit itself takes around an hour or two per canopy and duct system. We agree a date with you, plan the drive to Little Wymondley and turn up when the site is quiet.
- Post-clean verification is booked once the clean is done.
- The same access points are opened up.
- 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.
Before we arrive
- Dig out any earlier paperwork for the system
- Make sure someone can let us in and lock up afterwards
- Move anything stored near the system
How to get a quote
Getting a quote doesn’t take long. Send a few details and photos, and we normally reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
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Towns and villages near Little Wymondley
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Your questions about TR19 inspection in Little Wymondley
Which fire authority looks after Little Wymondley?
Hertfordshire Fire and Rescue Service is the fire and rescue service for Little Wymondley. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Will you come out to Little Wymondley?
Yes, we work in villages as well as towns, and Little Wymondley is covered. The journey is planned ahead, so a few details about the route help.
What information do you need?
The site address, the type of premises and your opening hours, plus photos of the system and your last certificate or report if you have one.
What do you do to protect the area?
Floors and surfaces near the work are sheeted before any work starts, and waste is contained as we go. At the end, the area is cleaned down.
How much does TR19 inspection cost?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before work begins.
How long does grease testing take?
It takes an hour or two for a single kitchen, longer for a large or complex system. We fit it around when the kitchen is closed or quiet.
What is a WFTT or DTT grease test?
Readings are taken using the Wet Film Thickness Test or the Deposit Thickness Test, then compare them with the TR19® Grease figures.
Is TR19 a legal requirement?
No. TR19® is BESA’s specification and the industry benchmark, not legislation. The legal duty comes from the Regulatory Reform (Fire Safety) Order 2005, which requires the responsible person to reduce fire risk, and insurers, fire officers and EHOs look to TR19® as the benchmark.