Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in St Paul's Walden, Hertfordshire
TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification in St Paul's Walden, surveyed first and signed off with a written report and photos. Ask us for a fixed quote.
- Surveys needed before quoting a full clean
- Extracts that have never been grease tested
- Sections of duct that can’t be reached
TR19 inspection in St Paul's Walden
TR19® Grease says grease should not exceed a mean of 200 microns between cleans, and 500 microns or more at any point needs immediate spot cleaning. Grease testing shows which side of those lines you are on. We are often asked to deal with pre-clean surveys before a first TR19 clean and kitchens taken over with no cleaning records, on insurer audits, post-clean checks and pre-clean surveys.
Somewhere as small as St Paul's Walden, commercial kitchens are few: perhaps a pub, a school or care home kitchen, or a hall used for events. Each still has a canopy and duct that collect grease.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Place
- St Paul's Walden (SG4)
- Wider area
- Hertfordshire
- Paperwork
- Certificate and photo report
- Quotes
- A fixed price before we start
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Your questions about TR19 inspection in St Paul's Walden
Can you come to St Paul's Walden after we close?
Yes, evening, overnight and weekend work is normal for us. That way a site in St Paul's Walden doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Can you get to a site in St Paul's Walden?
Yes. Villages and rural sites across the South East are part of our work, St Paul's Walden included. Photos of the system and directions to the site help us plan the visit.
Are you accredited?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We’re fully insured and have been trading since 2009.
How do you protect the area?
Floors and surfaces near the work are sheeted before work begins, and anything we remove is contained. At the end, the area is cleaned down.
How often should a kitchen extract be inspected?
That varies with the kitchen’s daily use. BESA’s minimum cleaning intervals are every 3, 6 or 12 months for heavy, moderate and light use, and testing shows if your kitchen needs more.
What is TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked, and it takes a risk-based approach.
Why survey before a clean?
We check the layout, the grease levels and the access, before anyone starts cleaning. Missing access panels are noted ahead of the clean.
Can you come out in an emergency?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we’ll advise on what to do next.
Different parts, different methods
Horizontal duct runs
If a run has no access panel, we note it so panels can be added.
Canopy and plenum
Clean-looking filters don’t mean a clean plenum. So we measure behind the filters, not just in front.
Aftercare tips
After the visit, a few habits help the work last:
- Look out for grease drips round the canopy edge
- Keep canopy edges and gutters wiped down
- Keep to the recommended interval
- Mention new equipment or longer hours at the next test
After the inspection, we send a report showing each reading, its location and pictures. File it alongside your TR19 certificates.
When cooking hours or the menu change, check the interval still fits. A quick grease test answers the question.
Fixed quotes for TR19 inspection in St Paul's Walden
There’s no set price list, because sites vary so much. The quote depends on:
- How easy every part is to reach
- Whether it’s a one-off visit or part of a schedule
- The condition we find in the survey
- How big the system is
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Helping us quote
There’s no need for technical detail. Just send:
- Any access panels or hatches you can see
- The times we could work without disrupting the site
- A few general shots of the system
- The roof, plant room or outside wall the system runs to
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Why it’s worth doing now in St Paul's Walden
Skipping grease testing leaves the cleaning interval to guesswork. If grease reaches 500 microns anywhere, TR19® Grease calls for immediate spot cleaning, which you won’t know without measuring. In a small place like St Paul's Walden, a system that fails can take a site out of use.
Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are unsure, call us on 0345 646 2711 or send us an email and we will give you an honest view and a fixed quote.
Why choose Duct Doctor in St Paul's Walden
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Survey first, then a fixed quote
- Work around your opening hours, with 24/7 emergency cover
- Ventilation hygiene specialists since 2009
Read how cleaning jobs are priced or our accreditations and certificates.
When to call us in St Paul's Walden
Grease in a duct is flammable fuel. A flare-up on the range can be drawn into the canopy and duct, and from there a fire can spread through the ductwork. Knowing how much there is lets you act before it becomes a hazard.
It’s time to book a visit if you see:
- Checking the result of a recent clean
- Insurers asking for TR19 evidence
- Pre-clean surveys before a first TR19 clean
- Cleaning intervals that may not suit the kitchen
If you run catering at a historic house or estate in the area (Knebworth House is about 2.4 miles south-east), event kitchens in older buildings often have awkward duct runs that need planning.
Comparing quotes
- Whether inaccessible sections are listed on the report
- Proof of accreditation you can verify
- Whether the work can be done while the site is closed
- When the next visit should be, and why
When something else is needed
It’s worth knowing the limits before booking:
- Removing the grease, which is a separate clean
- Mechanical faults in the extract
- Hidden runs that need access panels first
Not sure which it is? You can call us on 0345 646 2711, or send details by email and we’ll tell you honestly.
What we work on in St Paul's Walden
- Post-clean checks
- Deposit thickness tests
- Wet film thickness tests
- Access surveys
- Insurer audits
- Pre-clean surveys
What TR19 inspection looks like in St Paul's Walden
Fire safety in St Paul's Walden falls to 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. Kitchens in St Paul's Walden get their food hygiene inspections from North Hertfordshire council. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Before-and-after photos from each clean are a simple way to show the extract is in hand.
A hall kitchen that only cooks for events, whether near All Saints Church or elsewhere in St Paul's Walden, still needs its extract cleaned, just less often. Healthcare kitchens, like those at hospitals such as Lister Hospital (about 3.5 miles north-east), often cook for long hours, which puts them in BESA’s heavier-use bands.
St Paul's Walden is about 4 miles west of Stevenage, in Hertfordshire. Sites in St Paul's Walden 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. St Paul's Walden is one of 381 places in Hertfordshire where we work for TR19 inspection. We also work in Milton Keynes, about 24 miles from St Paul's Walden.
Work in SG4 follows the same survey, fixed quote and written report as everywhere else we cover. Streets in the area include Whitwell Road and Whitehouse Lane, all of which we cover for TR19 inspection. We also cover the places around St Paul's Walden: Whitwell (1 mile south-west), Langley Bottom (1 mile north-east), Rush Green (1 mile north-east), Langley (1 mile east) and Driver's End (2 miles south-east). We also work in nearby towns such as Hemel Hempstead (12 miles south-west), Stevenage (4 miles east), St Albans (10 miles south), Welwyn Garden City (7 miles south-east), Harpenden (6 miles south-west) and Hitchin (4 miles north).
Local landmarks in St Paul's Walden
Typical jobs here are in premises near The Bull Public House. For rail, the closest station is Stevenage station, roughly 2.7 miles east of the centre. Well-known places in the area include Stevenage Museum (3.1 miles east) and Lister Hospital (3.5 miles north-east). For a walk, there’s Mardley Heath.
What we do, step by step
There are three stages on the day: set-up, the treatment itself and the sign-off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with photos. The middle part takes longest, which takes an hour or two for a single kitchen, longer for a large or complex system. Rural roads and tight entrances are worth telling us about before a visit to St Paul's Walden.
- Post-clean verification is booked once the clean is done.
- We open the access points used on the clean.
- Grease readings are taken again at set points.
- Photos are taken to show the condition after the clean.
- The results are reported, with anything missed flagged.
Getting ready for the visit
- Let us know when the site is closed or quiet
- Clear the space around the work
- Find the previous report, if there is one
Getting a quote
There’s no standard price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, give us a ring on 0345 646 2711 or email us.