Greater London · Ductwork cleaning
Ductwork cleaning in Dollis Hill, Greater London
Ductwork cleaning for commercial sites in Dollis Hill and across Greater London. CHAS, SafeContractor and ISO 9001, and fully insured.
- Thick deposits at the bottom of a vertical duct
- Fat dripping from the ductwork
- Years of grease along the duct floor
Kitchen extracts in Dollis Hill
Food Standards Agency records list about 201 cafés, restaurants and staff canteens and about 156 takeaways and sandwich shops within 1.5 miles or so of the middle of Dollis Hill. The duct above a busy canopy coats itself in grease long before anyone sees it. It’s Brent council that sends environmental health officers to food businesses in Dollis Hill. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Before-and-after photos from each clean are a simple way to show the extract is in hand. Overnight is the normal time to clean a London kitchen extract, so trading is not affected.
A hospital like St Andrew's Hospital, about within half a mile south, is the kind of site where a kitchen may cook for patients, staff and visitors all day. If you cook for passing trade around Brent Cross West station, the extract can be cleaned between your last and first customer.
Dollis Hill is about 1 mile north-east of Neasden, in Greater London. Dollis Hill 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 pictures. Across Greater London, we cover 764 places, Dollis Hill among them. London is in our area too, about 7 miles from Dollis Hill.
Work in NW2, NW10 and NW9 follows the same survey, fixed quote and written report as everywhere else we cover. Local streets include Brook Road, Lane Close and Crest Road, and we cover them all for ductwork cleaning. Neighbouring places we cover for ductwork cleaning include Staples Corner (1 mile north-east), Neasden (1 mile south-west), Cricklewood (1 mile south-east), Willesden (1 mile south) and Brent Cross (1 mile north-east). Further out, we also cover London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (5 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles east).
Around Dollis Hill
Locally, jobs take us to businesses close to Woodfield School, The Crown Public House and Gladstone Park. There’s a railway station in Dollis Hill itself: Brent Cross West station. Nearby you’ll also find Brent Cross Shopping Centre (1 mile north-east) and St Andrew's Hospital (less than half a mile south). Not far away are Darland's Lake and Parliament Hill.
How we handle ductwork cleaning in Dollis Hill
Duct Doctor has cleaned kitchen extract ductwork since 2009, working across London and the South East. As a BESCA Vent Hygiene Elite member, our duct cleaning is done to BESA TR19® Grease, and our certificates are issued through the BESCA Vent Hygiene Elite portal. The work covers attenuators, horizontal duct runs and access panels, and the jobs we see most are grease leaking from duct joints and ductwork that has never been cleaned.
Across London, many commercial kitchens are squeezed into basements and narrow back-of-house spaces, and the duct may run up through several floors before it discharges at the roof. In Dollis Hill, as elsewhere in the capital, a long duct run means more access points to open and more grease to remove.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Where
- Dollis Hill (NW2, NW10, NW9)
- Region
- Greater London
- Records
- TR19® certificate and photo report
- Quote
- A fixed quote up front
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Updated
- 30 October 2026
Multi-site and managed buildings
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.
Records are where multi-site compliance often slips. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Common questions in Dollis Hill
Can you come to Dollis Hill after we close?
Yes, evening, overnight and weekend work is normal for us. It means the site in Dollis Hill keeps running as normal. When you call us on 0345 646 2711, or email photos, mention when the site is quiet.
Who carries out food hygiene inspections in Dollis Hill?
That’s Brent council, whose environmental health officers carry out food hygiene inspections in Dollis Hill. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
Who is the responsible person?
That depends on who controls the premises. Under the Fire Safety Order 2005, it’s the responsible person, which may be the employer, owner, landlord, facilities manager or managing agent.
How far ahead should we book?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
Do we lose a day’s trading?
Not normally. We work when the area is out of use, such as evenings, overnight, early mornings or weekends, so you keep your normal hours.
Do I get a certificate for ductwork cleaning?
Readings, pictures and, for a full clean, a TR19 certificate. The report says when the next clean is due.
What’s involved in cleaning extract ducts?
After a survey and grease readings, the duct is opened up through its access panels. Each run and riser is scraped and degreased, and test again when we’re done.
How much does ductwork cleaning cost in Dollis Hill?
We don’t publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before work begins.
Part by part
Attenuators and discharge
At the end of the duct is the discharge. Grease can collect there and stain the area around it, so it’s cleaned as far as safe access allows.
Bends and transitions
A bend can hold far more grease than a straight run of the same length. It’s scraped out and degreased, and test it before and after.
Nearby places to Dollis Hill
What else we do in Dollis Hill
In-house cleaning or a specialist?
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.
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you cannot see still need a specialist at the right interval.
Signs you need ductwork cleaning in Dollis Hill
Damaged or poorly fitted filters let more grease into the duct. The duct then takes grease that the filters should have stopped and it fills faster.
Signs it’s time to call us include:
- Sections of duct with no access panels
- Thick crusts of old grease along the duct
- A rancid smell from the extract duct
- Readings above 200 microns from a grease thickness test
Bursars and site managers at schools such as Our Lady of Grace Catholic Junior School tend to book extract cleaning for when the kitchen is empty.
Before booking anyone
- Exactly which parts of the system are covered
- What happens if part of the system can’t be accessed
- How they set the interval to the next visit
- Whether a written report and photos are included
When it’s something else
To be straight with you, some problems need a different fix:
- An extract fan that has stopped working
- A duct that’s too small or badly routed for the kitchen (a design issue)
- Ductwork that is corroded, split or holed (that needs a ductwork contractor)
Not sure which it is? You can give us a ring on 0345 646 2711 or send us an email and we will tell you honestly before you book.
What the work covers
- Attenuators
- Multi-storey ducts
- Bends and junctions
- Access panels
- Vertical risers
- Horizontal duct runs
The process
Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes anything from a few hours to several visits, depending on the length of duct, and the area is cleaned down before we leave. In Dollis Hill, as across London, we usually work overnight or at weekends and hand the site back ready to open.
- First the duct route is traced and every access point noted.
- Grease readings are taken at set points along the duct.
- We open the panels and scrape out the heaviest grease.
- The duct is degreased with the method that suits the grease, from degreasers to hot water or steam.
- Readings and photos are repeated and any section we couldn’t reach is recorded.
Preparing for the visit
- Have your last certificate or report to hand
- Name a contact who can let us in at the agreed time
- Let us know when the site is closed or quiet
How to get a quote
Quotes are quick. Send a few details and photos, and we typically reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
What affects the quote in Dollis Hill
We quote each job individually. These are the things that affect it:
- When the work can happen, such as evenings, overnight or weekends
- Any permits to work or inductions
- The condition of the system
- Whether it’s a one-off visit or part of a schedule
Working hours, access and the scale of the site all affect the cost. Each of those is built into the quote and give you a fixed price before we start.
Helping us quote
Many jobs can be priced from photos and some basics. Useful things to send:
- Your last certificate, test record or report
- 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
- Any symptoms, from odd noises to smells or leaks
Need a price for ductwork cleaning? Please phone us on 0345 646 2711 or use the quote form with a few details about the site. We will explain what we’d do and send a fixed quote before you commit to anything.