Hertfordshire · TR19 inspections and grease testing
TR19 inspections in Patchetts Green
TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification for commercial sites in Patchetts Green and across Hertfordshire. CHAS, SafeContractor and ISO 9001, and fully insured.
- Confirming a clean reached the whole system
- Heavy grease suspected in the plenum or ducts
- Missing access panels found on survey
What staff can safely do
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We’ll take a look and give you a fixed quote.
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
TR19 inspection in Patchetts Green
BESA sets minimum cleaning intervals by daily use: heavy use (12 to 16 hours a day) every 3 months, moderate use (6 to 12 hours) every 6 months and light use (2 to 6 hours) every 12 months. Those are minimums, and grease readings help set the real interval. The work covers wet film thickness tests, access surveys and pre-clean surveys, and the jobs we see most are missing access panels found on survey and heavy grease suspected in the plenum or ducts.
Work in a small place like Patchetts Green starts with a call to agree access and timings, and the clean covers the whole system, as it would anywhere: canopy to discharge, then a TR19® certificate and a photo report.
The sign-off is always in writing: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Place
- Patchetts Green (WD25)
- Region
- Hertfordshire
- Paperwork
- Certificate and photo report
- Quote
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What happens on the day
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before we start, and the area around the work is covered and protected. The work itself takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. Photos of the system and how to reach it help us plan a visit to Patchetts Green.
- We go through any past certificates and reports.
- The layout is traced from the canopy to the discharge.
- We note where access panels are and where more are needed.
- Grease readings are taken and photos recorded.
- You get a report and a fixed quote for the clean.
Preparing for the visit
- Have your last certificate or report to hand
- Let us know when the site is closed or quiet
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Getting a quote
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and we can price many jobs without a visit.
Advice
Patchetts Green: your questions answered
Which fire authority looks after Patchetts Green?
Fire safety enforcement in Patchetts Green is handled by Hertfordshire Fire and Rescue Service. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Can the work in Patchetts Green be done at night or at weekends?
Yes, nights and weekends are routine for us. That way a site in Patchetts Green doesn’t have to lose a day’s trading. Let us know the hours you’re closed and we’ll book within them.
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.
How much does TR19 inspection cost?
Every site is different, so each gets its own fixed quote. To get one, phone us on 0345 646 2711, or send details by email with the site type, opening hours and a few pictures.
Is there a survey before the work?
Yes. We always survey first, either from pictures and details you send or on a site visit. Then you get a fixed quote.
Are you accredited?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We’ve been trading since 2009 and we are fully insured.
Is TR19 cleaning the law?
No, not in itself. The Fire Safety Order 2005 still requires the responsible person to manage fire risk, and grease in the extract is part of that. Many insurers also expect TR19 cleaning.
Is a quote from photos possible?
Yes, if we can see what we need. Otherwise, we book a survey at a time that suits the site, and the quote follows that.
Aftercare tips
Results last longer with the right care. We suggest:
- Keep to the recommended interval
- Tell us if menus or opening hours change
- Send TR19 audit reports to your insurer on request
- Keep TR19 certificates, readings and reports together
Readings of 500 microns or more are highlighted as needing immediate spot cleaning, and we can arrange it.
Revisit the cleaning interval whenever the menu or hours change. Fresh readings show whether it needs to change.
For landlords and multi-site operators
If you look after several sites, we can schedule visits across all of them on one quote. Every building has its own written report, so each one has its own record.
From a single site to a large estate, the standard is the same: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
TR19 inspection around Patchetts Green
The FSA’s food hygiene register shows about 26 cafés, restaurants and staff canteens and about 9 sandwich bars and takeaways in and around Patchetts Green, up to about a mile and a half out. 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 Patchetts Green is Hertfordshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises. In Patchetts Green, food businesses are inspected by environmental health officers from Hertsmere council. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Keeping each certificate and photo report on file helps show the extract is looked after.
Bursars and site managers at schools such as Queens' School tend to book extract cleaning for when the kitchen is empty. If you run catering at a historic house or estate in the area (High Elms Manor is about 3 miles north-west), event kitchens in older buildings often have awkward duct runs that need planning.
Patchetts Green is about 1 mile north of Bushey, in Hertfordshire. We carry out TR19 inspection for commercial premises of every kind in Patchetts Green and the rest of Hertfordshire. 381 places in Hertfordshire are on our list, large and small. Our London page covers sites nearby (16 miles or so).
Our technicians cover all of WD25 for TR19 inspection and the roads nearby. Streets in the area include Hilfield Lane, Stables End and Canter Close, and we cover them all for TR19 inspection. Nearby, we also carry out TR19 inspection in Round Bush (1 mile north-east), Aldenham (1 mile north), Letchmore Heath (1 mile east), Kemprow (1 mile north-east) and Bushey (1 mile south). Further out, we also cover Hemel Hempstead (8 miles north-west), St Albans (6 miles north), Welwyn Garden City (11 miles north-east), Harpenden (10 miles north), Cheshunt (13 miles east) and Hatfield (8 miles north-east).
Landmarks near Patchetts Green
In Patchetts Green, that means kitchens and buildings near Highwood Primary School, Three Compasses Public House and Oxhey Park. Patchetts Green’s nearest station is Watford North station, roughly 1.7 miles west of the centre. Well-known places in the area include Watford General Hospital (2.5 miles south-west) and Hertfordshire Fire Brigade Museum (1.8 miles south-west). The countryside around Patchetts Green includes Stanmore Common.
Places near Patchetts Green
What else we do in Patchetts Green
What TR19 inspection can’t fix
A few issues sit outside what this work can do:
- Hidden runs that need access panels first
- Fire safety duties beyond the extract system
- A faulty or failing extract fan
If in doubt, call us on 0345 646 2711 or use the quote form and we’ll say what we think.
What we work on in Patchetts Green
- Insurer audits
- Post-clean checks
- Access surveys
- Wet film thickness tests
- Pre-clean surveys
- Deposit thickness tests
Different parts, different methods
Schools, hospitals and care homes
In healthcare and care settings, kitchens may run from early until late. Testing shows if the cleaning interval keeps pace.
Extract fan and discharge
The discharge at the end of the system is checked as well, as grease can build up there too.
What we’re called out for in Patchetts Green
Not every section of a kitchen extract is easy to get to, so those sections can be skipped time and again. A survey finds the sections that cannot be reached, so panels can be fitted.
Clients normally contact us after spotting something like this:
- Systems cleaned on a calendar with no measurements
- Sites with gaps in their extract records
- Insurers asking for TR19 evidence
- Post-clean verification after another contractor’s clean
A hall kitchen that only cooks for events, whether near Church of St John the Baptist or elsewhere in Patchetts Green, still needs its extract cleaned, just less often.
What to look for in a quote
- Whether the figure could change on the day
- How VAT is shown on the quote
- Whether the whole system is included, or only the parts that are easy to reach
- If they look at the system before pricing