Hertfordshire · Ductwork cleaning
Duct cleaning in Ayot St Lawrence
Ductwork cleaning for commercial sites in Ayot St Lawrence and across Hertfordshire. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Readings above 200 microns from a grease thickness test
- Sections of duct with no access panels
- Grease seeping out of the duct seams
Aftercare tips
Looking after the system between visits is straightforward, and it helps at the next visit:
- Diarise the next duct clean
- Keep the fan on while anything is cooking
- Check readings when the menu changes
- Get panels fitted where the duct couldn’t be cleaned
Grease readings are taken again at the same set points, giving you before and after readings. Photos of each section go alongside them.
Keep the fan on throughout service. When the air stops, grease settles in the duct, so switching off early adds to the build-up.
How we handle ductwork cleaning in Ayot St Lawrence
Many ducts were installed with too few access doors. Where a section can’t be reached, TR19 expects it to be recorded on the report, and we can fit new access panels so it’s cleaned next time. It’s better to know than to assume. Typical jobs include ductwork that has never been cleaned and a duct clean needed for an insurer, across access panels, attenuators and horizontal duct runs.
Somewhere as small as Ayot St Lawrence, commercial kitchens are few: perhaps a pub, a school or care home kitchen, or a hall used for events. Every one of them still needs its extract kept clear of grease, whatever the size of the place.
We’ve been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Place
- Ayot St Lawrence (AL6)
- Region
- Hertfordshire
- Records
- Certificate plus before-and-after pictures
- Quote
- Fixed quote, usually within a working day
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
How we price ductwork cleaning
There’s no set price list, because sites vary so much. What we look at:
- Access, including roofs, risers and ceiling voids
- The times the site is available
- Any permits to work or inductions
- The condition we find in the survey
No two sites are the same, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all play a part.
Asking for a quote
When you call or email, it’s useful to have:
- The roof, plant room or outside wall the system runs to
- The postcode and the type of business
- Photos showing the whole system and its surroundings
- Problems your staff have spotted
Getting a quote doesn’t take long. Send a few details and pictures, and we normally reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
What we do, step by step
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Anything that needs to be off for the work is switched off and left to cool before we start, and floors and nearby surfaces are sheeted. The work itself takes a few hours for a short run, longer for long runs and tall risers. Seeing the system in pictures first means the trip to Ayot St Lawrence can be planned properly.
- We trace the duct and find every way in.
- We take grease readings along the route.
- Once the kitchen has closed, we protect the area and open the panels.
- Thick grease is scraped out, then the runs and risers are degreased.
- Panels are closed, readings and pictures repeated, and unreachable sections recorded.
Getting ready for the visit
- Let us know about permits to work or site inductions
- Name a contact who can let us in at the agreed time
- Clear the space around the work
Get a fixed quote
To help us quote: the address, the type of site and when it’s open, a few photos and any previous report or certificate. Once you have those, phone us on 0345 646 2711 or use the quote form.
Read more
Multi-site and managed buildings
Multi-site operators often want one contractor and one number. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we are happy to quote for all of it.
Leave it or put it right?
BESA guidance says grease shouldn’t exceed a mean of 200 microns between cleans. Anywhere that reaches 500 microns or more needs immediate spot cleaning. Leaving the duct makes those limits harder to keep to. It’s simpler to plan the work at Ayot St Lawrence now than to arrange it in a hurry later.
We do not list prices on the website, because each job is priced on what it involves. Call for a fixed quote, and we’ll explain what it covers.
Why book with us
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- We diagnose before we treat
- One number for every site across the South East and London
- Out-of-hours work and a 24/7 emergency line
Take a look at how cleaning jobs are priced or our accreditations and certificates.
Places near Ayot St Lawrence
Also in Ayot St Lawrence
Grease, kitchens and Ayot St Lawrence
The FSA’s food hygiene register shows about 4 restaurants, cafés and works canteens within roughly a mile and a half of the centre of Ayot St Lawrence. Where they cook under a canopy, grease doesn’t stop at the filters: it settles along the duct and up the riser. Hertfordshire Fire and Rescue Service covers Ayot St Lawrence. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Food hygiene inspections in Ayot St Lawrence are the job of St Albans City council’s environmental health team. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Our report lists what was cleaned and when, which is useful to have ready.
Term dates shape school work: for a school like Monk's Walk School, an extract clean fits neatly into a half-term or summer break. If you run a church or community hall kitchen, near Old St Lawrence Church or elsewhere in Ayot St Lawrence, its extract still collects grease from every lunch and event. A hospital like Queen Elizabeth II Hospital, about 4.9 miles south-east, is the kind of site where a kitchen may cook for patients, staff and visitors all day.
Ayot St Lawrence is about 4 miles east of Harpenden, in Hertfordshire. Every kind of commercial site in Ayot St Lawrence, ductwork cleaning is something we can help with. We can work out of hours so trading isn’t interrupted. Ayot St Lawrence is one of 381 towns, villages and districts in Hertfordshire where we work for commercial clients. We also work in London, about 24 miles from Ayot St Lawrence.
Ductwork cleaning in AL6 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Hill Farm Lane and Bibbs Hall Lane and nearby roads. We also cover the places around Ayot St Lawrence: Codicote Bottom (1 mile north-east), Ayot St Peter (1 mile south-east), Gustard Wood (1 mile south-west), Codicote (1 mile north-east) and Kimpton (2 miles north-west). We also work in nearby towns such as Watford (13 miles south-west), Hemel Hempstead (10 miles south-west), Stevenage (6 miles north-east), St Albans (6 miles south-west), Welwyn Garden City (4 miles south-east) and Harpenden (4 miles west).
Landmarks near Ayot St Lawrence
Around Ayot St Lawrence, our work takes us to kitchens and buildings near The Brocket Arms and Danesbury Park. The closest station to Ayot St Lawrence is Welwyn North station, about 3.1 miles east of the centre. Well-known places in the area include Queen Elizabeth II Hospital (4.9 miles south-east) and Howard Centre (3.5 miles south-east). The countryside around Ayot St Lawrence includes Stocking Springs Wood.
Different parts, different methods
Access panels
Access panels are the doors that let us into the duct. Where there are none, those sections cannot be cleaned and the report has to say so.
Bends and transitions
Grease tends to pile up at elbows. It’s scraped out and degreased, and readings are taken there before and after.
Honest limits
Before you book, it helps to know what’s not included:
- A damper stuck open in the duct
- Sections that can’t be reached safely without new access (those are recorded, and panels can be fitted)
- Ductwork that’s corroded, split or holed (that needs a ductwork contractor)
If you are not sure, just give us a ring on 0345 646 2711, or send details by email and we’ll give you a straight answer before you book.
Parts of the system we cover
- Attenuators
- Horizontal duct runs
- Vertical risers
- Multi-storey ducts
- Access panels
- Bends and junctions
Your questions about ductwork cleaning in Ayot St Lawrence
Which fire and rescue service is responsible for Ayot St Lawrence?
That is Hertfordshire Fire and Rescue Service. TR19® is not law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Who carries out food hygiene inspections in Ayot St Lawrence?
That’s St Albans City council, whose environmental health officers carry out food hygiene inspections in Ayot St Lawrence. It helps to keep the extract cleaning records with your food safety paperwork, so they’re ready if asked for.
Is Ayot St Lawrence in your area?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, and that includes Ayot St Lawrence.
Do you offer maintenance contracts?
Yes. Send details of the systems and how they’re used, and we will suggest a schedule and quote for it.
What’s involved in cleaning extract ducts?
We open each access panel and clean the section it reaches. Heavy grease comes out by hand, and what’s left is degreased, with readings taken before and after.
How often should kitchen ducts be cleaned?
At least as often as BESA guidance sets for your cooking hours. Kitchens cooking 12 to 16 hours a day need it at least every 3 months, while lighter use can go longer.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Which kinds of sites do you work on?
Commercial premises of every kind: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.