Hertfordshire · TR19 inspections and grease testing

TR19 Inspection in Lemsford

Professional TR19 inspection in and around Lemsford, timed so the site keeps working and finished with a written report and pictures.

  • Extracts that have never been grease tested
  • Surveys needed before quoting a full clean
  • Insurers asking for TR19 evidence

TR19 inspection near Lemsford

How we handle TR19 inspection in Lemsford

A fixed schedule doesn’t always match how a kitchen really cooks. Some kitchens build up grease faster than the minimum intervals assume, which is why measurement matters. Our readings give your risk assessment real numbers to work from. If you’re dealing with uncertainty over how often to clean and sections of duct that can’t be reached, we can help.

For a kitchen in or near Lemsford, 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, filters, duct, fan and discharge, with a certificate and photo report at the end.

It’s worth checking any contractor’s accreditations. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we are fully insured.

The Duct Doctor team standing beside their branded white and blue vans
Place
Lemsford (AL8)
Wider area
Hertfordshire
Records
TR19® certificate and photo report
Price
Fixed quote, usually within a working day
When we work
Overnight and weekend work, 24/7 emergency callout
Phone
0345 646 2711
Last updated
30 October 2026

Managing agents and facilities teams in Lemsford

The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.

Keeping records across a portfolio is half the battle. Each visit ends with a dated report and pictures, so you can show an insurer or inspector what was done at each site.

FAQs for Lemsford

Do you work overnight in Lemsford?

Yes, we can come after you close and finish before you open. Your customers, staff or residents in Lemsford needn’t be disturbed. Let us know the hours you’re closed and we will book within them.

Can school kitchens in Lemsford be cleaned in the holidays?

Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 12 schools and colleges with food registrations within roughly a mile and a half of Lemsford. Just phone us on 0345 646 2711, or email photos with your term dates and we’ll plan around them.

What does TR19 inspection cost?

We do not publish prices, because the cost depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before any work starts.

What is grease thickness testing?

We measure the grease at set points with a WFTT or DTT test, then compare them with the TR19® Grease figures.

Is there a survey before the work?

Yes, always. We diagnose before we treat: the survey tells us what the system needs and how to reach it, and the quote is based on that.

Can you look after several sites?

Yes. Tell us the addresses and what each needs and you will get one fixed quote.

Do you offer emergency callouts?

Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.

Will you produce a report for our insurer?

Yes, for kitchens across the South East and London. Tell us what your insurer has asked for and we’ll set the report out to match.

Staff cleaning versus specialist work

Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.

If your staff spot something 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’ll take a look and send you a fixed quote.

What happens on the day

The first job on site is protection: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. The work on site takes anything from an hour for a small canopy and short duct to a good part of a day for a large site, and the area is cleaned down before we leave. A few pictures of the system help us make the most of a visit to a place like Lemsford.

  1. After the clean, we arrange a time to check the system.
  2. The same access points are opened up.
  3. We repeat the WFTT or DTT readings.
  4. Photos are taken to show the condition after the clean.
  5. We report the findings and flag any areas that need more work.

How to prepare

  • Make sure someone can let us in and lock up afterwards
  • Clear the space around the work
  • Agree a time when the area can be out of use

How to get a quote

For a fixed quote, phone us on 0345 646 2711, or email photos with the site type, your trading hours and a short description of the system. A few pictures and your last certificate or report help a lot. We normally come back within one working day.

Get a quick quote

Related advice

Fixed quotes for TR19 inspection in Lemsford

We don’t publish a price list, because sites vary so much. The quote depends on:

  • The size of the system
  • Working hours and out-of-hours timing
  • Whether several sites go on one quote
  • The condition we find in the survey

The cost depends on how big the system is, the condition it’s in and access to every part of it. We give you a fixed price before work begins, so there are no surprises.

Helping us quote

Before you ask for a quote, gather:

  • A few general shots of the system
  • When the site is open and when it’s quiet
  • How we’d reach plant on a roof or in a plant room
  • The paperwork from the last visit, if you have it

Here’s what helps us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Once you have those, ring 0345 646 2711 or send us an email.

Why deal with it now?

After an incident, an insurer can ask to see proof of TR19 cleaning and inspection. Without them, a claim can be reduced or refused. An up-to-date inspection report is a good place to start. If the system at a site near Lemsford fails, there may be nowhere nearby to move to.

Kitchens, offices, schools and hospitals are all priced the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we’ll explain each part.

What you get with us

  • BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
  • Photo reports with every job
  • A fixed price before any work starts
  • Accredited under CHAS and SafeContractor, with ISO 9001

See our cost guide or how to check a contractor.

Aftercare tips

To keep the system working properly between visits:

  • Clean or swap grease filters as often as the kitchen needs
  • Diary the next grease test and clean
  • Keep TR19 certificates, readings and reports together
  • Keep the route to access panels clear

For an insurer audit, send them the report as it is, with readings, pictures and any areas not accessible.

Close the access gaps found during inspection, so grease isn’t left building in hidden parts.

TR19 inspection in Lemsford: the local picture

According to Food Standards Agency records, there are about 6 bars, pubs and nightclubs within 1.5 miles or so of the middle of Lemsford. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. Kitchens in Lemsford get their food hygiene inspections from Welwyn Hatfield council. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Our report lists what was cleaned and when, which is useful to have ready. Lemsford is covered by Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order.

Healthcare kitchens, like those at hospitals such as Queen Elizabeth II Hospital (about 2.1 miles south-east), often cook for long hours, which puts them in BESA’s heavier-use bands. Where a hall near Church of St John the Evangelist, or anywhere in Lemsford, hosts lunch clubs or events, its extract gathers grease just as a café’s does.

Lemsford is about 2 miles west of Welwyn Garden City, in Hertfordshire. Sites in Lemsford get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where needed and a written report with photos. Across Hertfordshire, we cover 381 places, Lemsford among them. London is in our area too, about 21 miles from Lemsford.

Work in AL8 is surveyed, quoted and booked the same way as anywhere else. You will find streets such as Mill Close, Lemsford Village and Great North Road, and we cover them all for TR19 inspection. If your site is just outside Lemsford, we cover Stanborough (1 mile south), Coleman Green (2 miles west), Cooper's Green (2 miles south-west), Hatfield (2 miles south) and Smallford (3 miles south-west). We also work in nearby towns such as Watford (12 miles south-west), Hemel Hempstead (10 miles west), Stevenage (8 miles north), St Albans (5 miles south-west), Harpenden (5 miles west) and Hitchin (11 miles north).

Local landmarks in Lemsford

In Lemsford, that means kitchens and buildings near Stanborough Park, Stanborough School and The Sun Inn, among other places. The nearest railway station is Welwyn Garden City station, about 1.2 miles east. Nearby you’ll also find Queen Elizabeth II Hospital (2.1 miles south-east) and The Bunker at Hatfield Police Station (2.1 miles south). The countryside around Lemsford includes Lemsford Springs.

Map of Lemsford © OpenStreetMap contributors

What we’re called out for in Lemsford

As hot, greasy air travels up the duct, it cools and leaves a film behind. It often collects where nobody can see it: the plenum, bends and horizontal runs.

Any of these means the system needs a check-up:

  • Heavy grease suspected in the plenum or ducts
  • Extracts that have never been grease tested
  • Cleaning intervals that may not suit the kitchen
  • Parts of the system left out of past cleans

If you look after a school kitchen, at a school such as Applecroft School or anywhere near Lemsford, the holidays are the usual time for a TR19® clean.

Questions to ask before booking

  • What records you will receive afterwards
  • Proof of insurance
  • Whether VAT is included
  • When they can work, and whether that’s outside your opening hours

Our hiring checklist

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London