Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in Letty Green, Hertfordshire
For TR19 inspections and grease testing in Letty Green, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Kitchens whose menu or hours have changed
- Missing TR19 certificates or history
- Checking the result of a recent clean
How it works
We start by comparing what we find with the survey or your pictures. Anything unexpected is raised with you before we go further. After that, the work takes around an hour or two per canopy and duct system. Seeing the system in pictures first means the trip to Letty Green can be planned properly.
- We go through any past certificates and reports.
- The layout is traced from the canopy to the discharge.
- Access panels are located and any missing ones noted.
- Grease readings are taken and photos recorded.
- We report back with readings and a fixed quote.
Getting ready for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Dig out any earlier paperwork for the system
- Move anything stored near the system
How to get a quote
Here’s what helps us quote: the address, the type of site and when it’s open, photos of the system and any previous report or certificate. Then give us a ring on 0345 646 2711 or email us.
Advice
TR19 inspection in Letty Green, done properly
If you’ve taken over a kitchen in Letty Green and do not know when the extract was last cleaned, an inspection is the place to start. You get readings, pictures and a clear view of what’s needed, before any cleaning is booked. Common call-outs are for checking the result of a recent clean and systems that need surveying before cleaning, across deposit thickness tests, post-clean checks and wet film thickness tests.
For a kitchen in or near Letty Green, 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.
A written report with photos follows every visit, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Letty Green (SG14)
- Region
- Hertfordshire
- Reporting
- Certificate plus before-and-after pictures
- Quotes
- Fixed quote, usually within a working day
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
When to call us in Letty Green
Grease is fuel. Flames from the range can be pulled into the canopy and travel through the ducts to other parts of the building. Knowing how much there is lets you act before it becomes a hazard.
Clients usually contact us when they notice something like this:
- Sites with gaps in their extract records
- Missing access panels found on survey
- Ductwork where grease may be over the TR19 limits
- Pre-clean surveys before a first TR19 clean
If you run a church or community hall kitchen, near St John's Church or elsewhere in Letty Green, its extract still collects grease from every lunch and event.
Questions to ask before you book
- Whether the quote shows VAT
- Proof of accreditation you can verify
- What’s included in the scope, part by part
- Whether the quote is based on a survey or photos
FAQs for Letty Green
Do you do school kitchen extract cleaning in Letty Green in the summer holidays?
Yes, out-of-term visits are normal for schools. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of Letty Green. Send us your term dates when you call us on 0345 646 2711 or drop us a line, and we’ll fit the work in.
Do you work in villages like Letty Green?
Yes. Letty Green is within the area we cover across London and the South East. Photos of the system and directions to the site help us plan the visit.
What do you do to protect the area?
By covering it before any work starts. The work is kept contained and clean down when we finish.
Why survey before a clean?
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.
Is there a survey before the work?
Yes, every time. We diagnose before we treat: the survey shows what needs doing and what access we need, and the quote is based on that.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
What about areas you cannot get to?
The report shows them clearly. In ductwork, new access panels are often the answer, which we can install.
Which sectors do you work in?
Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.
Also near Letty Green
Also in Letty Green
Letty Green kitchens: local notes
Hertfordshire Fire and Rescue Service covers Letty Green. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. Letty Green, about 20 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Hatfield House is about 3.4 miles south-west), access may need planning. For schools such as Hertingfordbury Cowper Primary School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.
Letty Green is about 3 miles south-east of Welwyn Garden City, in Hertfordshire. Across the SG14 area, we cover TR19 inspection for commercial sites. Letty Green is one of 381 towns, villages and districts in Hertfordshire where we work for commercial clients. You can also see our page for London, about 20 miles away.
All of SG14 is covered for TR19 inspection, from busy streets to back roads. Whether your site is on Station Road, Woolmers Lane and Chapel Lane or anywhere close by, our technicians can take on the work. Other places close to Letty Green include East End Green (1 mile east), Staines Green (1 mile north-east), Hertingfordbury (1 mile north-east), Essendon (2 miles south-west) and Little Berkhamsted (2 miles south). Larger places within reach include Watford (14 miles south-west), Hemel Hempstead (14 miles west), Stevenage (9 miles north), St Albans (8 miles west), Bishop's Stortford (14 miles north-east) and Welwyn Garden City (3 miles north-west).
Local landmarks in Letty Green
Around Letty Green, our work takes us to kitchens and buildings near The Sele School and Panshanger Park. For rail, the closest station is Hertford North station, about 2.2 miles north-east. A little further out are Howard Centre (3.2 miles north-west) and Mcmullen & Sons Brewery Museum (2.6 miles north-east). Not far away are Willowmead.
Aftercare tips
Once we have finished, these simple steps help:
- Look out for grease drips round the canopy edge
- Keep canopy edges and gutters wiped down
- Keep TR19 certificates, readings and reports together
- Share inspection reports with your insurer or broker when asked
The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.
Keep certificates, reports and readings in one place so the history is easy to show.
What TR19 inspection can’t fix
Not every problem is solved by TR19 inspection, and we’d rather say so up front. It won’t put right:
- Sections with no access, until panels are fitted
- Design faults in the extract system
- Removing the grease, which is a separate clean
If in doubt, ring 0345 646 2711 or drop us a line and we will say what we think.
What we work on in Letty Green
- Access surveys
- Wet film thickness tests
- Pre-clean surveys
- Insurer audits
- Deposit thickness tests
- Post-clean checks
Leave it or put it right?
Catching heavy deposits early keeps the fix small. Left alone, grease keeps building between cleans. In a small place like Letty Green, a system that fails can take a site out of use.
One small site or a whole estate, the quote is built the same way: the work involved, the access and the timing. You’ll have a fixed price before work begins.
Why choose Duct Doctor in Letty Green
- In business since 2009
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- We are fully insured
- We diagnose before we treat
What staff can safely do
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, next to our reports.
Multi-site and managed buildings
We also work for facilities teams across offices, schools and healthcare across Hertfordshire. Larger estates can be phased building by building to keep disruption down.
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 each one has its own record.