Kent · Ductwork cleaning
Ductwork cleaning in Kennington, Kent
One call covers ductwork cleaning in Kennington: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Duct runs with no cleaning record
- Heavy grease at the base of a riser
- A rancid smell from the extract duct
About our ductwork cleaning in Kennington
The ductwork is where an extract clean is won or lost. Sections with no way in can go uncleaned for years. We open up every reachable section and record any we cannot reach, so you know exactly where you stand. If you have heavy grease at the base of a riser and a duct clean needed for an insurer, we can put it right, from vertical risers, horizontal duct runs and multi-storey ducts onwards.
Around a smaller place like Kennington, kitchen extracts tend to belong to pubs, cafés, takeaways and school or care home kitchens. A kitchen that cooks fewer hours still builds up grease, so cleaning is planned around how much it cooks and what the readings show.
A written report with pictures follows every visit, so there’s a dated record of the work. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Location
- Kennington (TN24, TN25)
- Region
- Kent
- Reporting
- Certificate plus before-and-after pictures
- Quotes
- Fixed quote, typically within a working day
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Why it’s worth doing now in Kennington
Booking the duct clean in Kennington now keeps it a planned job. It takes a shift or more, depending on the length of the runs and the number of access points, and we work evenings, overnight and weekends. It’s easy to lose track of when the work was last done on a quieter site.
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, which can make the next visit longer. If you are unsure, call 0345 646 2711 or send us an email and we’ll give you an honest view and a fixed quote.
Why choose Duct Doctor in Kennington
- We’re fully insured
- A fixed price before any work starts
- One contact for all your sites in London and the South East
- CHAS and SafeContractor accredited, with ISO 9001
Take a look at what affects the cost or our accreditations and certificates.
Your questions about ductwork cleaning in Kennington
Will you come out to Kennington?
Yes. Kennington is within the area we cover across London and the South East. A survey first, from photos or a visit, means we arrive with the right kit.
Which fire and rescue service is responsible for Kennington?
That’s Kent 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.
Do you have insurance?
Yes. We carry full insurance and have been trading since 2009.
What information do you need?
Where the site is, what it is and when it’s open, plus pictures of the system and your last certificate or report if you have one.
What if part of the duct cannot be reached?
Without a way in, a section can’t be cleaned properly. Those parts are listed, and we can install panels so they’re reached next time.
Can you price the work without visiting?
Often, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we can’t see enough, we arrange a survey.
How often should kitchen ducts be cleaned?
BESA guidance sets minimum intervals by daily cooking hours: every 3 months for 12 to 16 hours, 6 months for 6 to 12 hours and 12 months for 2 to 6 hours. Grease readings may show it needs doing sooner.
What shows that the ducts need a clean?
We measure it. Readings are taken by Wet Film Thickness Test (WFTT) or Deposit Thickness Test (DTT). BESA guidance says the mean shouldn’t exceed 200 microns, and 500 or more anywhere needs immediate spot cleaning.
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 work begins, and the area around the work is covered and protected. The work itself takes a few hours for a short run, longer for long runs and tall risers. A site near Kennington normally has room to park, so the questions are about access to the system and your hours.
- We map the duct route and check where the access panels are.
- We measure grease thickness at set points before cleaning.
- Access panels are opened and heavy deposits scraped out by hand.
- The duct is degreased with the method that suits the grease, from degreasers to hot water or steam.
- We test again, take pictures and note any part that couldn’t be reached.
Getting ready for the visit
- Make sure someone can let us in and lock up afterwards
- Mention any parking or loading restrictions
- Clear the space around the work
Ask for a quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Related advice
For landlords and multi-site operators
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side, and the report can go to both.
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.
What the work involves, part by part
Bends and transitions
A bend can hold far more grease than a straight run of the same length. We clean it back by hand and with degreaser, and readings are taken there before and after.
Horizontal duct runs
Flat runs of duct link the canopy to the riser or the outside wall. They collect grease as the air cools and slows, so each section is cleaned through its access panels.
Kennington kitchens: local notes
There are about 83 restaurants, cafés and canteens and about 22 takeaways and sandwich shops within about 1.5 miles of central Kennington, according to the Food Standards Agency’s register. Each kitchen that cooks under a canopy sends grease-laden air into a duct, where it cools and settles. Environmental health officers from Ashford council inspect food businesses in Kennington. 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. Kent Fire and Rescue Service covers Kennington. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk.
Volunteers running a hall kitchen near Church of St Mary, or anywhere in Kennington, may not know when the extract was last cleaned, and a grease test settles it. Bursars and site managers at schools such as Kennington Church of England Academy tend to book extract cleaning for when the kitchen is empty.
Kennington is about 2 miles north-east of Ashford, in Kent. Kennington gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where needed and a written report with photos. Kennington is one of 922 towns, villages and districts in Kent we cover for ductwork cleaning. Maidstone is in our area too, around 17 miles away.
Ductwork cleaning in TN24 and TN25 is surveyed, quoted and booked the same way as anywhere else. You’ll find streets such as Park Road, York Road and Ball Lane, and we cover them all for ductwork cleaning. Main roads around Kennington include the A28, which makes travel easy for ductwork cleaning. We also cover the places around Kennington: Bockhanger (1 mile south-west), Potters Corner (1 mile west), Boughton Lees (2 miles north), Godinton (2 miles south-west) and Willesborough (2 miles south). Within a short drive, we also cover Canterbury (12 miles north-east), Sittingbourne (14 miles north-west), Folkestone (13 miles south-east), Whitstable (14 miles north-east), Faversham (10 miles north) and Hythe (11 miles south-east).
Landmarks near Kennington
Typical jobs here are in premises near Towers School and Sixth Form Centre, Conningbrook Lakes Country Park and The Rose Inn and the streets around them. The nearest railway station is Ashford International station, roughly 1.7 miles south of the centre. Nearby you will also find County Square (1.4 miles south-west) and William Harvey Hospital (2.1 miles south-east). Not far away are Hatch Park.
Aftercare tips
Results last longer with the right care. We suggest:
- File each certificate and photo report in the maintenance log
- Never cook with a filter missing
- Tell us if grease leaks from the ductwork
- Do not block access panels with shelving or stock
A full system clean includes a TR19 certificate from the BESCA Vent Hygiene Elite portal. It records the date, the location and the technician.
Book the next duct clean before the date passes. If the kitchen starts cooking longer hours, the interval may need to shorten, and grease thickness testing will show it.
Common problems we fix in Kennington
Ducts in Kennington gather grease for the same reasons as ducts anywhere: hours of cooking, the type of food and how well the filters are kept. Under BESA guidance, the minimum interval is 3, 6 or 12 months, by daily cooking hours.
It’s time to book a visit if you see:
- Years of grease along the duct floor
- Fat dripping from the ductwork
- High readings at a recent grease test
- An insurer asking for TR19 evidence
If you run catering at a historic house or estate in the area (Godinton House is about 2.3 miles west), event kitchens in older buildings often have awkward duct runs that need planning.
What your quote should include
- Which accreditations they hold, and whether you can check them
- Whether the quote is based on a survey or photos
- How areas they can’t reach will be recorded
- If the quote is a fixed price or an estimate
Also near Kennington
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What staff can safely do
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.