Hertfordshire · TR19 inspections and grease testing
TR19 inspections in Rooks Nest
One call covers TR19 inspections and grease testing in Rooks Nest, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Cleaning intervals that may not suit the kitchen
- Extracts that may be over the 200 micron mean
- Confirming a clean reached the whole system
TR19 inspection around Rooks Nest
Look up Rooks Nest on the FSA’s food hygiene register and you will find about 37 restaurants, cafés and works canteens and about 36 sandwich bars and takeaways across Rooks Nest and its immediate surroundings (about a mile and a half). Where they cook under a canopy, a grease reading is the way to tell whether the extract is due a clean. The fire and rescue service for Rooks Nest is Hertfordshire Fire and Rescue Service. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. It’s Stevenage council that sends environmental health officers to food businesses in Rooks Nest. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Before-and-after pictures from each clean are a simple way to show the extract is in hand.
If you run catering at a historic house or estate in the area (Aston Bury is about 3.7 miles south-east), event kitchens in older buildings often have awkward duct runs that need planning. Healthcare kitchens, like those at hospitals such as Lister Hospital (about 0.9 miles west), often cook for long hours, which puts them in BESA’s heavier-use bands.
Rooks Nest is about 1 mile north of Stevenage, in Hertfordshire. Wherever you are in the SG1 postcode area, we cover TR19 inspection for commercial sites. We cover 381 places across Hertfordshire, from busy centres to quieter spots. There’s also a page for Milton Keynes, about 26 miles away.
Postcode districts we cover here for TR19 inspection: SG1. Neighbouring places we cover for TR19 inspection include St Nicholas (1 mile east), Pin Green (1 mile south), Stevenage (1 mile south), Chells (1 mile south-east) and Bedwell (1 mile south). Further out, we also cover St Albans (13 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (9 miles south), Harpenden (10 miles south-west), Hitchin (4 miles north-west) and Hoddesdon (14 miles south-east).
Landmarks near Rooks Nest
We work in commercial kitchens and buildings around The Barclay School, Marquis of Granby pub and The John Henry Newman School. For rail, the closest station is Stevenage station, roughly 1.7 miles south-west of the centre. Other landmarks nearby include Stevenage Museum (1.6 miles south) and Wymondley Castle (2.1 miles north-west). Open spaces near Rooks Nest include Pryor's Wood.
How we handle TR19 inspection in Rooks Nest
Insurance policies often require evidence of TR19® cleaning and inspection. Missing records can lead to a claim being reduced or refused. A TR19 audit sets out the system’s condition, with readings and pictures, for sites in Rooks Nest and the rest of Hertfordshire. The work covers post-clean checks, insurer audits and pre-clean surveys, and the jobs we see most are extracts that have never been grease tested and heavy grease suspected in the plenum or ducts.
In a small place like Rooks Nest, kitchens are often in older or extended buildings, with long single-storey duct runs, where grease settles in the flat sections. Access, parking and timings are agreed before the day.
The report is your system’s health record: dated, with pictures, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Place
- Rooks Nest (SG1)
- Region
- Hertfordshire
- Reporting
- TR19® certificate and photo report
- Price
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Aftercare tips
Simple habits between visits make a real difference. Our advice:
- Look out for grease drips round the canopy edge
- Book the next test on the date in the report
- Store grease readings where your insurer can see them
- Never cook with filters missing
Readings of 500 microns or more are highlighted as needing immediate spot cleaning, and we can arrange it.
Regular grease readings keep the cleaning interval honest. It shows if build-up is speeding up.
Your questions about TR19 inspection in Rooks Nest
Who would carry out a food hygiene inspection at a kitchen in Rooks Nest?
Kitchens in Rooks Nest are inspected by Stevenage council’s environmental health officers. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.
Which fire and rescue service is responsible for Rooks Nest?
That is Hertfordshire Fire and Rescue Service. TR19® isn’t law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Is TR19 a legal requirement?
No. TR19® is a specification, not a statute. Without TR19 records, an insurance claim can be reduced or refused, so following it is the sensible course.
What is a WFTT or DTT grease test?
Grease thickness testing measures the layer of grease on the duct surfaces, by WFTT or DTT. Each reading is recorded in microns.
Do you offer maintenance contracts?
Yes. We run scheduled maintenance contracts, with visits at the interval your system needs. Each report recommends when the next visit should be.
What does a pre-clean survey involve?
A survey finds out how the system is laid out, how dirty it is and what can be reached, before anyone starts cleaning. Missing access panels are noted ahead of the clean.
How long does grease testing take?
It takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. We fit it around when the kitchen is closed or quiet.
What types of premises do you cover?
Any commercial site with kitchens or ventilation, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
Signs you need TR19 inspection in Rooks Nest
When a site in Rooks Nest changes owner or cleaning contractor, the records do not always follow. Without them, nobody knows how much grease is in the system or when it was last cleaned.
If you notice any of these, it’s worth a diagnosis:
- Kitchens whose menu or hours have changed
- Ductwork where grease may be over the TR19 limits
- Confirming a clean reached the whole system
- Parts of the system left out of past cleans
Bursars and site managers at schools such as Trotts Hill Primary and Nursery School tend to book extract cleaning for when the kitchen is empty.
What your quote should include
- What paperwork you get at the end
- Proof of insurance
- Whether the figure could change on the day
- How they set the interval to the next visit
Why it’s worth doing now in Rooks Nest
Skipping grease testing leaves the cleaning interval to guesswork. Any reading of 500 microns or more needs immediate spot cleaning under TR19® Grease, which you will not know without measuring. In a place like Rooks Nest, ductwork and fans are easy to forget until something goes wrong.
We do not list prices on the website, because each job is priced on what it involves. For a fixed quote, give us a ring on 0345 646 2711, or send details by email, and we will explain what it covers.
Why choose Duct Doctor in Rooks Nest
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fixed quotes from a survey or pictures
- Full insurance on every job
- One contact for all your sites in London and the South East
Read what affects the cost and our accreditations and certificates.
How the visit works
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. The visit itself takes an hour or two for a single kitchen, longer for a large or complex system. A few photos of the system help us make the most of a visit to a place like Rooks Nest.
- 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.
- You get a report and a fixed quote for the clean.
Preparing 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
- Let us know when the site is closed or quiet
How to get a quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
Related advice
What a clean won’t put right
We will not sell you work that does not address the problem, so these are the things it won’t cover:
- Installation problems, which fall under design guidance such as DW172
- The legal duty, which stays with the responsible person
- Hidden runs that need access panels first
If in doubt, call us on 0345 646 2711 or use the quote form and we’ll say what we think.
What the work covers
- Pre-clean surveys
- Access surveys
- Insurer audits
- Deposit thickness tests
- Wet film thickness tests
- Post-clean checks
More services for Rooks Nest
Fixed quotes for TR19 inspection in Rooks Nest
The quote reflects the site in front of us. We take into account:
- The scale of the work
- Whether it’s a one-off visit or part of a schedule
- Site rules, permits and inductions
- Parking and loading at the site
Combining work into one visit or one programme can make for a more efficient booking. Tell us about everything you’d like looked at and we will price it together.
Helping us quote
Photos let us diagnose from a distance. The most useful are:
- Where the site is and what kind of site it is
- Wide pictures of the system and the area around it
- The paperwork from the last visit, if you have it
- Detail shots of panels, filters and grilles
We don’t publish a price list, because every site is different. We look at your system first, from pictures or on a visit, then send a fixed quote. To get going, call us on 0345 646 2711, or send details by email.
Managing agents and facilities teams in Rooks Nest
We also work for facilities teams across offices, schools and healthcare across Hertfordshire. Larger estates can be phased building by building to keep disruption down.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.