Hertfordshire · TR19 inspections and grease testing
TR19 Inspection in Deacon's Hill
For TR19 inspections and grease testing in Deacon's Hill, one call is all it takes: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Systems cleaned on a calendar with no measurements
- An insurer’s request for a TR19 audit
- Checking the result of a recent clean
Grease, kitchens and Deacon's Hill
There are about 50 restaurants, cafés and canteens and about 26 takeaways in Deacon's Hill and the streets around it, up to about 1.5 miles out, according to the Food Standards Agency’s register. Where they cook under a canopy, a grease reading is the way to tell whether the extract is due a clean. Fire safety in Deacon's Hill falls to Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Food hygiene inspections in Deacon's Hill are the job of Hertsmere council’s environmental health team. Extraction counts as kitchen equipment, so its condition can come up on the day. Keeping each certificate and photo report on file helps show the extract is looked after.
If you run a café or takeaway near Elstree & Borehamwood station, early starts and late finishes leave little time to clean, so overnight extract cleaning suits. School kitchens, at schools like Summerswood Primary School for example, are usually cleaned in the holidays so no lunches are lost.
Deacon's Hill is about 1 mile south of Borehamwood, in Hertfordshire. We carry out TR19 inspection for businesses, landlords and public buildings in Deacon's Hill and the rest of Hertfordshire. Deacon's Hill is one of 381 places in Hertfordshire where we work for commercial clients. You can also see our page for London, about 13 miles away.
Our technicians cover all of the WD6 postcode area for TR19 inspection and the roads nearby. Whether your site is on Grange Road, Vale Avenue and Barnet Lane or a nearby road, our technicians can take on the work. With the A411 close by, Deacon's Hill is easy for our technicians to reach at any hour. If your site is just outside Deacon's Hill, we cover Edgware Bury (1 mile south), Elstree (1 mile west), Borehamwood (1 mile north), Broadfields Estate (1 mile south) and Rowley Green (2 miles north-east). Larger places within reach include Watford (5 miles west), Hemel Hempstead (11 miles north-west), St Albans (8 miles north), Welwyn Garden City (11 miles north), Harpenden (12 miles north) and Hoddesdon (14 miles north-east).
Around Deacon's Hill
We work in commercial kitchens and buildings around Yavneh College, Edgwarebury Park and The Crown pub. Deacon's Hill’s nearest station is Elstree & Borehamwood station, roughly 0.6 miles north of the centre. Other landmarks nearby include Broadwalk Centre (2.2 miles south) and Royal National Orthopaedic Hospital (1.4 miles south-west). The countryside around Deacon's Hill includes Darland's Lake and Edgware Way Grassland.
TR19 inspection in Deacon's Hill
A grease test measures how thick the grease is inside a kitchen extract system. Readings are taken at set points using the Wet Film Thickness Test (WFTT) or the Deposit Thickness Test (DTT). The results show whether the system needs cleaning and how soon. Common call-outs are for an insurer’s request for a TR19 audit and kitchens whose menu or hours have changed, on insurer audits, access surveys and wet film thickness tests.
For a kitchen in or near Deacon's Hill, 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 to discharge, then a TR19® certificate and a photo report.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we’re fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Where
- Deacon's Hill (WD6)
- Wider area
- Hertfordshire
- Paperwork
- Certificate and photo report
- Quote
- A fixed quote up front
- Hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Updated
- 30 October 2026
How it works
Before we leave, we walk the area with whoever is on site. We point out anything that couldn’t be reached or needs a follow-up, and the same goes into the written report. The visit takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. The timing of a visit to Deacon's Hill is set by you, and the travel is our side of the planning.
- 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.
How to prepare
- Let us know about parking and loading
- Dig out any earlier paperwork for the system
- Mention any locked doors, roof access or ceiling voids
Ask for a quote
We do not publish a price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then send you a fixed quote. To get going, call us on 0345 646 2711 or email us.
Advice
Honest limits
In fairness, some problems need a different fix:
- Sections with no access, until panels are fitted
- A faulty or failing extract fan
- The responsible person’s own fire risk assessment
Not sure which it is? You can ring 0345 646 2711 or drop us a line and we will tell you honestly.
Where we work
- Deposit thickness tests
- Wet film thickness tests
- Post-clean checks
- Pre-clean surveys
- Access surveys
- Insurer audits
FAQs for Deacon's Hill
Can you get to a site in Deacon's Hill?
Yes. Villages and rural sites across the South East are part of our work, Deacon's Hill included. Just mention lanes, gates or anything else about the site when you book.
Who is the fire and rescue service for Deacon's Hill?
Deacon's Hill is in the area of 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.
Is TR19 a legal requirement?
No. It’s the benchmark rather than the law. Without TR19 records, an insurance claim can be reduced or refused, so it matters in practice.
What happens on a pre-clean survey?
We look at the system from canopy to discharge, take grease readings and check access. From it, we plan the clean and quote a fixed price.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7 for anything that can’t wait until a planned visit. Ring any time and tell us what’s happened.
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. Emergencies are different, because our line is open 24/7.
Do you work with multi-site operators?
Yes. One number covers all your sites across London and the South East, with visits on a regular schedule.
Keeping the system healthy
Results last longer with the right care. We suggest:
- Keep the route to access panels clear
- Store grease readings where your insurer can see them
- Diary the next grease test and clean
- Keep canopy edges and gutters wiped down
The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.
Test grease regularly instead of relying on the calendar. It spots changes in how fast grease builds.
Fixed quotes for TR19 inspection in Deacon's Hill
The diagnosis comes before the price. We look at:
- The number of sites or systems
- Where the site is and how we reach it
- Working hours and out-of-hours timing
- The condition we find in the survey
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. The price is fixed before work begins.
What we need to know
What to send for a quote:
- The roof, plant room or outside wall the system runs to
- Problems your staff have spotted
- Detail shots of panels, filters and grilles
- When the site is open and when it’s quiet
For TR19 inspection in Deacon's Hill, ring 0345 646 2711 or send us an email. Let us know the site type and the opening hours, and send pictures or your last report if you can. We usually send a fixed quote within one working day.
What your team can do, and what needs us
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, alongside our reports.
Landlords, agents and facilities managers
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Running several sites is easier with one contractor. We cover South East England and London, so visits at different addresses can be planned together and kept on a regular cycle.
Nearby places to Deacon's Hill
More services for Deacon's Hill
Do you need TR19 inspection in Deacon's Hill?
Some parts of a system are hard to reach, and grease can be missed there clean after clean. An inspection of a system in Deacon's Hill shows where access panels are missing, so panels can be fitted.
Signs it’s time to call us include:
- Post-clean verification after another contractor’s clean
- An insurer’s request for a TR19 audit
- Uncertainty over how often to clean
- Heavy grease suspected in the plenum or ducts
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Deacon's Hill is Royal National Orthopaedic Hospital, about 1.4 miles south-west.
What to look for in a quote
- If the quote is a fixed price or an estimate
- If they look at the system before pricing
- What’s included in the scope, part by part
- How VAT is shown on the quote