Hertfordshire · TR19 inspections and grease testing
TR19 Inspection in Norcott Hill
We cover Norcott Hill for TR19 inspection. Out-of-hours visits, a fixed quote and a written report with photos on every job.
- Systems that need surveying before cleaning
- Insurance renewals needing proof of TR19 cleaning
- Parts of the system left out of past cleans
How the visit works
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Anything that needs to be off for the work is switched off and left to cool first, and floors and nearby surfaces are sheeted. On site, it takes a couple of hours for a typical kitchen extract system. If you can send pictures, we can arrive in Norcott Hill knowing what to expect.
- The visit is arranged for when the kitchen is not busy.
- We look over the canopy, plenum, ducts, fan and discharge.
- Grease thickness is measured at set points by WFTT or DTT.
- Each test point and any access problems are photographed.
- You get a report with readings, pictures and recommendations.
How to prepare
- Name a contact who can let us in at the agreed time
- Agree a time when the area can be out of use
- Clear loose items from the work area
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, you get a fixed price before we start.
Related advice
TR19 inspection in Norcott Hill
A fixed schedule doesn’t always match how a kitchen really cooks. Some kitchens build up grease faster than the minimum intervals assume, and only measurement shows it. Our readings give your risk assessment real numbers to work from. The work covers wet film thickness tests, post-clean checks and pre-clean surveys, and people most often call us about an insurer’s request for a TR19 audit and extracts that may be over the 200 micron mean.
Rural kitchens often have long, low duct runs through a roof space or along an outside wall, where grease settles in the flat sections. We agree access and timings in advance.
Duct Doctor has been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Place
- Norcott Hill (HP4)
- Region
- Hertfordshire
- Records
- Certificate plus before-and-after pictures
- Price
- Fixed quote, typically within a working day
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Why it’s worth doing now in Norcott Hill
Post-clean verification shows whether the system was left the way the certificate says, before the next clean is due. It’s worth booking a check, because nobody sees inside a duct day to day.
The cost depends on how big the system is, the condition it’s in and how easy it is to reach. We give you a fixed price before work begins, so you know where you stand.
What you get with us
- Survey first, then a fixed quote
- One number for every site across the South East and London
- CHAS and SafeContractor accredited, with ISO 9001
- Out-of-hours work and a 24/7 emergency line
Take a look at how cleaning jobs are priced or our accreditations and certificates.
What affects the quote in Norcott Hill
Sites vary more than people expect. The main factors:
- When the work can happen, such as evenings, overnight or weekends
- Site requirements such as sign-in and permits
- Whether we need access equipment or extra panels
- How many systems or sites are involved
No two sites are the same, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all play a part.
What we need to know
A few details help us quote accurately. When you get in touch, it helps to send:
- How we’d reach plant on a roof or in a plant room
- The site address and the type of premises
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Wide photos of the system and the area around it
We do not publish a price list, because every site is different. Instead, we look at your site first, from pictures or a survey, then send a fixed quote. To start, give us a ring on 0345 646 2711 or send us an email.
TR19 inspection around Norcott Hill
Food Standards Agency records list about 6 restaurants, cafés and canteens within about 1.5 miles of central Norcott Hill. A WFTT or DTT reading tells each of those kitchens whether its grease is staying under the 200-micron mean. In Norcott Hill, food businesses are inspected by environmental health officers from Dacorum council. Extraction counts as kitchen equipment, so its condition can come up on the day. Before-and-after pictures from each clean are a simple way to show the extract is in hand. The fire and rescue service for Norcott Hill is Hertfordshire Fire and Rescue Service. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Cholesbury Manor House is about 3.1 miles south-west), access may need planning. Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Norcott Hill is Hemel Hempstead Hospital, about 5.9 miles south-east. For schools such as St Mary's CofE Primary School, kitchen extract cleaning is typically booked for the holidays, when the canteen is closed.
Norcott Hill is about 2 miles north-west of Berkhamsted, in Hertfordshire. Whether your site is in the middle of Norcott Hill or further out, TR19 inspection is available to all kinds of commercial premises, from small sites to large estates. Norcott Hill is one of 381 towns, villages and districts in Hertfordshire where we work for commercial clients. Milton Keynes is in our area too, around 19 miles away.
Every address in HP4 is covered for TR19 inspection, from busy streets to back roads. Neighbouring places we cover for TR19 inspection include Northchurch (1 mile south), Berkhamsted (2 miles south-east), Ashridge (2 miles north-east), Frithsden (3 miles east) and Ashley Green (3 miles south). Larger places within reach include Watford (12 miles south-east), Hemel Hempstead (6 miles east), St Albans (12 miles east), Harpenden (11 miles east), Bushey (14 miles south-east) and Rickmansworth (11 miles south-east).
Near you in Norcott Hill
In Norcott Hill, that means kitchens and buildings near The Artisan at The Cow Roast Inn, among other places. For rail, the closest station is Tring station, roughly 1.5 miles north-west. A little further out are Hawridge Court (3.1 miles south-west) and Hemel Hempstead Hospital (5.9 miles south-east). Green spaces nearby include College Lake nature reserve and Pavis Wood.
Norcott Hill: your questions answered
Which fire and rescue service is responsible for Norcott Hill?
That is Hertfordshire Fire and Rescue Service. If a fire safety officer visits a commercial kitchen, they may ask about the fire risk assessment and how the extract is kept clean.
Can you clean school kitchen extracts in Norcott Hill during the holidays?
Yes, and it’s the easiest time to do it. The FSA’s register shows about 3 schools and colleges with food registrations within roughly a mile and a half of Norcott Hill. Booking early in the term gives the best choice of holiday dates.
How do you measure grease in a kitchen extract?
Readings are taken using the Wet Film Thickness Test or the Deposit Thickness Test, then compare them with the TR19® Grease figures.
Can you work evenings and weekends?
Yes. Give us your opening hours with your enquiry and we will book around them.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together on one programme. Each site gets its own report and pictures.
Do we have to follow TR19 by law?
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 TR19® is what insurers and fire officers look to.
Where does the waste go?
It’s contained and taken away. Grease, debris and waste water are collected as the work goes on, so it doesn’t spread.
Do you look at the system first?
Yes. Every job is surveyed first, from your pictures and details, or with a visit where needed. Then you get a fixed quote.
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What staff can safely do
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
Managing agents and facilities teams in Norcott Hill
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Every building has its own written report, so records stay tidy.
Looking after it afterwards
After the visit, a few habits help the work last:
- Wipe the canopy surfaces regularly
- Share inspection reports with your insurer or broker when asked
- Keep grease filters clean and fitted properly
- Look out for grease drips round the canopy edge
After the inspection, we send a report showing each reading, its location and photos. File it alongside your TR19 certificates.
Close the access gaps found during inspection, so grease is not left building in hidden parts.
What the work involves, part by part
Schools, hospitals and care homes
We fit testing around service times and school holidays so meals aren’t affected.
Restaurants, pubs and hotels
A kitchen running from breakfast to late service builds grease quickly. Regular testing shows whether the cleaning interval keeps up.