Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in Frogmore, Hertfordshire
TR19 inspection for commercial sites in Frogmore and across Hertfordshire. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Uncertainty over how often to clean
- Pre-clean surveys before a first TR19 clean
- Missing TR19 certificates or history
TR19 inspection for kitchens and businesses in Frogmore
Many insurers ask for proof that kitchen extract systems are cleaned and inspected to TR19®. Without it, a claim can be refused or reduced. A TR19 audit sets out the system’s condition, with readings and photos, for sites in Frogmore and the rest of Hertfordshire. Typical jobs include sections of duct that can’t be reached and confirming a clean reached the whole system, on post-clean checks, insurer audits and pre-clean surveys.
In a small place like Frogmore, kitchens are often in older or extended buildings, with long single-storey duct runs, where grease settles in the flat sections. We agree access and timings in advance.
Accreditations are easy to claim and worth checking. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Frogmore (AL2)
- Wider area
- Hertfordshire
- Reporting
- Certificate plus before-and-after pictures
- Quote
- A fixed quote up front
- When we work
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
What affects the quote in Frogmore
The quote reflects the site in front of us. We take into account:
- The condition of the system
- Whether we need access equipment or extra panels
- One-off work versus a regular cycle
- How big the system is
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we’ll explain each part.
Asking for a quote
To speed up the quote, send us:
- Any access panels or hatches you can see
- Photos showing the whole system and its surroundings
- The times we could work without disrupting the site
- Where the plant sits or the system leaves the building, such as a roof or outside wall
If you need TR19 inspection in Frogmore, ring 0345 646 2711, or email photos. Tell us what kind of premises it is and when it’s open, plus photos or the previous report if they’re to hand. We usually send a fixed quote within one working day.
Towns and villages near Frogmore
Also in Frogmore
The process
A visit follows the same order every time: sheeting and protection first, make the system safe, carry out the TR19 inspection, clear away and leave you the report. The visit itself takes around an hour or two per canopy and duct system. Visits to a village like Frogmore are booked in advance, at a time that suits whoever runs the site.
- First we look at the system’s cleaning history, if there is one.
- We follow the extract from canopy to discharge.
- Access panels are located and any missing ones noted.
- We measure the grease and photograph each point.
- You get a report and a fixed quote for the clean.
Getting ready for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Allow time for equipment near the work to be turned off and cool down
- Find the previous report, if there is one
How to get a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To start, give us a ring on 0345 646 2711 or drop us a line.
Advice
Part by part
Canopy and plenum
Filters can look fine while the plenum behind them is heavily coated. That’s why we test behind them.
Horizontal duct runs
Sections without access are recorded so it can be fixed before the clean.
Multi-site and managed buildings
Whether it’s one building or many, you get the same standard: diagnosis, a fixed price, work booked around your hours and a written report with photos.
For anyone managing more than one site, we can schedule visits across all of them on one quote. Each site gets its own report and photos, so records stay tidy.
Questions from Frogmore
Can the work in Frogmore be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. It means the site in Frogmore keeps running as normal. Let us know the hours you are closed and we will book within them.
Which fire authority looks after Frogmore?
That’s 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.
What should I send you?
A short description and a few pictures, with the address and opening hours. If we need more, we’ll ask.
How do you measure grease in a kitchen extract?
It’s a measurement of how much grease is coating the inside of the extract, using the Wet Film Thickness Test (WFTT) or Deposit Thickness Test (DTT). The results are given in microns.
Do you survey before quoting?
Yes. For many sites, pictures and a few details are enough, while bigger or harder-to-see systems are surveyed on site.
Can you inspect our extract for our insurance company?
Yes. We inspect the system and produce a report with grease readings, photos and any inaccessible areas. It’s set out for your insurer or broker.
At what point does grease need cleaning?
TR19® Grease says the mean shouldn’t exceed 200 microns between cleans, with 500 microns or more anywhere needing immediate spot cleaning.
Is TR19 cleaning the law?
No. It’s the benchmark rather than the law. In practice, an insurer can refuse or reduce a claim without proof of TR19 cleaning, so following it is the sensible course.
Frogmore kitchens: local notes
The FSA’s food hygiene register shows about 15 restaurants, cafés and canteens and about 14 takeaways and sandwich shops within 1.5 miles or so of the middle of Frogmore. For any of them with a canopy, measuring grease is better than guessing when to clean. Food hygiene inspections in Frogmore are the job of St Albans City council’s environmental health team. Extraction counts as kitchen equipment, so its condition can come up on the day. Our report lists what was cleaned and when, which is useful to have ready. The fire and rescue service for Frogmore is Hertfordshire Fire and Rescue Service. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
If you look after a school kitchen, at a school such as Park Street Church of England Voluntary Aided Primary School or anywhere near Frogmore, the holidays are the usual time for a TR19® clean. A hall kitchen that only cooks for events, whether near Church of the Holy Trinity or elsewhere in Frogmore, still needs its extract cleaned, just less often.
Frogmore is about 2 miles south of St Albans, in Hertfordshire. Frogmore gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with photos. Our Hertfordshire coverage runs to 381 places, Frogmore among them. We also work in London, around 18 miles away.
Every address in AL2 is within our area for TR19 inspection, from busy streets to back roads. Streets in the area include Centaurus Square, Frogmore and Avian Avenue, and we cover them all for TR19 inspection. If your site is just outside Frogmore, we cover Park Street (1 mile north-west), How Wood (1 mile west), Colney Street (1 mile south-east), Chiswell Green (1 mile north-west) and Sopwell (1 mile north). We also work in nearby towns such as Watford (5 miles south-west), Hemel Hempstead (6 miles north-west), Stevenage (15 miles north-east), Welwyn Garden City (8 miles north-east), Harpenden (7 miles north) and Hoddesdon (14 miles east).
Local landmarks in Frogmore
Around Frogmore, our work takes us to kitchens and buildings near The Old Red Lion pub and Marlborough Science Academy. Frogmore has its own railway station: How Wood station. Well-known places in the area include Hypocaust Museum (2.3 miles north-west) and Hilfield Castle (4.5 miles south). The countryside around Frogmore includes Verulamium Lake and Broad Colney Lakes.
Why it’s worth doing now in Frogmore
A pre-clean survey avoids surprises on the night. Missing access panels, hidden duct runs and awkward fans are found before the cleaners arrive, so the clean covers the whole system. In a place like Frogmore, ductwork and fans are easy to forget until something goes wrong.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered and we will price it together.
Why us?
- In business since 2009
- Fixed quotes, usually within one working day
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- We diagnose before we treat
What a clean won’t put right
We’d rather tell you now than book work that won’t help, so here are the limits:
- Heavy deposits found on test, which still need cleaning
- The responsible person’s own fire risk assessment
- Sections with no access, until panels are fitted
If you’re not sure, just call us on 0345 646 2711, or send details by email and we’ll give you a straight answer.
Where we work
- Pre-clean surveys
- Post-clean checks
- Access surveys
- Wet film thickness tests
- Deposit thickness tests
- Insurer audits
Common problems we fix in Frogmore
When a site in Frogmore changes owner or cleaning contractor, the records don’t always follow. Without them, nobody knows how much grease is in the system or when it was last cleaned.
What we are most often called out for:
- Missing TR19 certificates or history
- Sections of duct that cannot be reached
- Ductwork where grease may be over the TR19 limits
- Confirming a clean reached the whole system
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Frogmore is Napsbury Hospital, about 1.1 miles east.
What your quote should include
- Whether the work can be done while the site is closed
- How VAT is shown on the quote
- Whether the price is fixed
- What’s included in the scope, part by part