Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in Sandon, Hertfordshire
We cover Sandon for TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification. Fixed quotes, work around your opening hours and photo reports on every job.
- Surveys needed before quoting a full clean
- Insurance renewals needing proof of TR19 cleaning
- Parts of the system left out of past cleans
TR19 inspection in Sandon, done properly
A fixed schedule does not always match how a kitchen really cooks. In a busy kitchen, grease can build faster than the minimum intervals allow for, and only measurement shows it. We give your risk assessment measured figures rather than guesses. The work covers pre-clean surveys, deposit thickness tests and post-clean checks, and people most often call us about surveys needed before quoting a full clean and parts of the system left out of past cleans.
Work in a small place like Sandon starts with a call to agree access and timings, and the clean covers the whole system, as it would anywhere: canopy, filters, duct, fan and discharge, with a certificate and photo report at the end.
The report is your system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Sandon (SG9)
- Wider area
- Hertfordshire
- Paperwork
- Certificate plus before-and-after pictures
- Quotes
- A fixed price before work begins
- When we work
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
How it works
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. The visit itself takes a couple of hours for a typical kitchen extract system. In a small place like Sandon, the journey is planned ahead and the visit arranged around the site’s hours.
- The visit is arranged for when the kitchen is not busy.
- We look over the canopy, plenum, ducts, fan and discharge.
- Grease thickness is measured at set points by WFTT or DTT.
- Each test point and any access problems are photographed.
- The findings go into a report with readings, pictures and a recommended next clean.
Preparing for the visit
- Tell us about site rules, permits or sign-in
- Name a contact who can let us in at the agreed time
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
If you need TR19 inspection in Sandon, call us on 0345 646 2711 or drop us a line. Tell us what kind of premises it is and when it’s open, and send pictures or your last report if you can. A fixed quote usually follows within one working day.
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Looking after it afterwards
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Flag oily drips near the extract
- Mention new equipment or longer hours at the next test
- Clean grease off the canopy between professional cleans
- Diary the next grease test and clean
For an insurer audit, send them the report as it is, including readings, pictures and any inaccessible sections.
Close the access gaps found during inspection, so every part of the duct can be cleaned.
Also in Sandon
TR19 inspection in Sandon: the local picture
We cover Sandon, about 34 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site. Kitchens in Sandon 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. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
Term dates shape school work: for a school like Sandon Junior Mixed and Infant School, an extract clean fits neatly into a half-term or summer break. Where a hall near Church of All Saints, or anywhere in Sandon, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
Sandon is in Hertfordshire. Every kind of commercial site in Sandon, we can take on TR19 inspection. We can work out of hours so trading isn’t interrupted. 381 places in Hertfordshire are on our list, from busy centres to quieter spots. We also work in Milton Keynes, about 29 miles from Sandon.
We cover every part of SG9 for TR19 inspection and the roads nearby. Streets in the area include Payne End, Rushden Road and Dark Lane, all of which we cover for TR19 inspection. We also cover the places around Sandon: Roe Green (1 mile south-west), Green End (1 mile south-east), Rushden (2 miles south-west), Buckland (2 miles east) and Chipping (3 miles south-east). Larger places within reach include Stevenage (7 miles south-west), Bishop's Stortford (13 miles south-east), Welwyn Garden City (14 miles south), Hitchin (9 miles west), Hertford (13 miles south) and Letchworth (6 miles west).
Local landmarks in Sandon
Sandon’s nearest station is Ashwell & Morden station, about 2.9 miles north-west. Nearby you’ll also find Clothall Castle (3.5 miles south-west). The countryside around Sandon includes Hawkins Wood.
Staff cleaning versus specialist work
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you cannot see still need a specialist at the right interval.
Why deal with it now?
Without readings, you’re guessing when to clean. Any reading of 500 microns or more needs immediate spot cleaning under TR19® Grease, which you will not know without measuring. Our emergency line runs 24/7, but a planned visit to Sandon is calmer for everyone.
One small site or a whole estate, the quote is built the same way: the work involved, the access and the timing. You will have a fixed price before any work starts.
Why choose Duct Doctor in Sandon
- A fixed price before any work starts
- In business since 2009
- Every job surveyed first
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Take a look at how cleaning jobs are priced or our accreditations.
What affects the quote in Sandon
A fixed price needs a few facts first. We look at:
- How easy every part is to reach
- The number of sites or systems
- The condition we find in the survey
- How big the system is
We do not list prices on the website, because the cost depends on the site in front of us. For a fixed quote, give us a ring on 0345 646 2711 or use the quote form, and we will explain what it covers.
Asking for a quote
You do not need the technical terms. It helps if you can send:
- Where the site is and what kind of site it is
- The times we could work without disrupting the site
- The paperwork from the last visit, if you have it
- Photos showing the whole system and its surroundings
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.
Part by part
Extract fan and discharge
Grease on the fan adds to wear. The inspection shows whether it needs cleaning now.
Restaurants, pubs and hotels
Kitchens that cook for long hours build up grease faster. Readings show if the cleans are frequent enough.
Managing agents and facilities teams in Sandon
We regularly work with managing agents. Send the address, what’s needed and how access works, and we will send a fixed quote.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Common questions in Sandon
Which council inspects kitchens in Sandon?
Food hygiene inspections in Sandon are carried out by North Hertfordshire council. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Can you come to Sandon after we close?
Yes, nights and weekends are routine for us. The work in Sandon can fit around your hours. Just call us on 0345 646 2711, or email photos with your opening times and we will plan around them.
Can you look after several sites?
Yes. Send the list of sites and the work at each and you’ll get one fixed quote.
Is Sandon in your area?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, Sandon included.
Do you offer maintenance contracts?
Yes, of course. Send details of the systems and how they’re used, and we will suggest a schedule and quote for it.
Do we have to follow TR19 by law?
No. TR19® is BESA’s specification and the industry benchmark, not legislation. The law is the Fire Safety Order 2005, under which the responsible person must manage fire risk, and insurers, fire officers and EHOs look to TR19® as the benchmark.
What does TR19 inspection cost?
Size, condition, access and working hours all affect the cost. Call for a fixed quote and we’ll usually reply within one working day.
What is post-clean verification?
Post-clean verification is a check after a clean, with fresh grease readings and pictures. It can follow our own cleans or another contractor’s.