Greater London · Ductwork cleaning
Duct cleaning in Coldblow
Ductwork cleaning for Coldblow, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Fat dripping from the ductwork
- Sections of duct with no access panels
- Years of grease along the duct floor
How we price ductwork cleaning
Before we fix a price, we need to know a few things. We check:
- Whether we need access equipment or extra panels
- Travel, parking and unloading
- Site requirements such as sign-in and permits
- Working hours and out-of-hours timing
What you pay depends on how big the system is, the condition it’s in and how easy it is to reach. We give you a fixed price before any work starts, so you know where you stand.
What we need to know
You do not need the technical terms. Just send:
- The roof, plant room or outside wall the system runs to
- A few general shots of the system
- The postcode and the type of business
- Any access panels or hatches you can see
For a fixed quote, phone us on 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. We normally come back within one working day.
How we handle ductwork cleaning in Coldblow
Nobody sees duct grease building, so nobody notices it until something goes wrong. A flare-up drawn up from the range can light it, carrying a fire along the duct and into rooms far from the kitchen. Removing it is the whole point. The work covers vertical risers, horizontal duct runs and bends and junctions, and people most often call us about years of grease along the duct floor and a grease test showing the duct is overdue.
London kitchens tend to trade late and open early, so work in Coldblow is normally booked for the night or the early hours. Parking, loading and access to the roof are agreed with the building before the night of the clean.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Where
- Coldblow (DA5)
- Region
- Greater London
- Paperwork
- Certificate and photo report
- Price
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Kitchen extracts in Coldblow
Food Standards Agency records list about 59 restaurants, cafés and works canteens and about 31 sandwich bars and takeaways in and around Coldblow, up to about a mile and a half out. The duct above a busy canopy coats itself in grease long before anyone sees it. In Coldblow, food businesses are inspected by environmental health officers from Bexley council. Extraction counts as kitchen equipment, so its condition can come up on the day. Keeping each certificate and photo report on file helps show the extract is looked after. Overnight is the normal time to clean a London kitchen extract, so trading isn’t affected.
A hospital like Bexley Hospital, about 1.9 miles north-west, is the kind of site where a kitchen may cook for patients, staff and visitors all day. A hall kitchen that only cooks for events, whether near Church of St Mary the Virgin or elsewhere in Coldblow, still needs its extract cleaned, just less often. For schools such as Maypole Primary School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed.
Coldblow is about 3 miles east of Sidcup, in Greater London. From the centre of Coldblow to the outskirts, ductwork cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Coldblow is one of 764 towns, villages and districts in Greater London where we work for ductwork cleaning. You can also see our page for London, about 12 miles away.
Work in DA5 is surveyed, quoted and booked the same way as anywhere else. That includes premises on St Mary's Road, Dartford Road and Wansunt Road and nearby roads. We also cover the places around Coldblow: Joyden's Wood (1 mile south-east), Bowmans (1 mile east), North Cray (1 mile south-west), Crayford (1 mile north-east) and Wilmington (1 mile south-east). Further out, we also cover London (12 miles west), City of Westminster (15 miles west), Marylebone (14 miles north-west), St Pancras (14 miles north-west), Shoreditch (12 miles north-west) and Walthamstow (13 miles north-west).
Around Coldblow
Locally, jobs take us to businesses close to The Old Wick pub, St Columba's Catholic Boys' School and Braeburn Park, among other places. For rail, the closest station is Bexley station, roughly 0.6 miles west. Other landmarks nearby include Stone Castle (5 miles east) and Bexley Museum (0.7 miles north). Not far away are Wansunt Pit and Summer Hill.
Nearby places to Coldblow
What else we do in Coldblow
Landlords, agents and facilities managers
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.
If you look after several sites, we can schedule visits across all of them on one quote. Each site gets its own report and photos, so records stay tidy.
In-house cleaning or a specialist?
Staff cleaning and specialist work are not the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
Coldblow questions
Can the work in Coldblow be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. It means the site in Coldblow keeps running as normal. Just ring 0345 646 2711 or email us with your opening times and we will plan around them.
Who inspects food businesses in Coldblow?
Kitchens in Coldblow are inspected by Bexley council’s environmental health officers. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
Who is the responsible person?
The law calls them the responsible person. It’s normally the employer, or whoever controls the building, and in shared buildings more than one person can have duties. Your lease and fire risk assessment should make it clear.
How can I tell if my extract ducts are dirty?
A grease thickness test gives the answer. 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.
Is Coldblow in your area?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, Coldblow included.
Do we lose a day’s trading?
Not normally. Visits are timed for when the area is closed, such as overnight or at a weekend, so you keep your normal hours.
Do you survey before quoting?
Yes. Photos often do the job, and larger or hidden systems get a visit.
What paperwork do you give after a duct clean?
A photo report, with readings and before and after pictures, plus a TR19 certificate for a full system clean. The report says when the next clean is due.
How it works
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Afterwards, the area is left tidy and the written report follows. Most London sites can’t stop for the day, so work in Coldblow is usually done overnight, early in the morning or at weekends.
- The duct route is surveyed and every access point found.
- We take grease readings along the route.
- Out of hours, the area is protected and the access panels opened.
- Thick grease is scraped out, then the runs and risers are degreased.
- We close up, re-test, photograph and record anything out of reach.
Before we arrive
- Have your last certificate or report to hand
- Agree a time when the area can be out of use
- Tell us about site rules, permits or sign-in
Ask for a quote
Want a quote for ductwork cleaning? Please call us on 0345 646 2711 or drop us a line with a few details about the site. We will explain what we’d do and send a fixed quote before anything is booked.
Related advice
Keeping the system healthy
Think of this as the after-treatment advice, short and simple:
- Keep access panels clear of stored items
- Report any grease dripping from duct joints
- File each certificate and photo report in the maintenance log
- Keep to the interval on the report
After the clean, the same points are tested again, giving you before and after readings. Before and after photos sit next to the numbers.
Watch for warning signs between cleans: drips from the ductwork, stale smells or a noisy fan. Testing will show whether any section has reached 500 microns.
What happens if it’s left?
A dirty duct is something insurers ask about. Many require cleaning to TR19, and they can refuse or reduce a claim without proof. A certificate that covers the ductwork is what they want to see. In a London building, a problem in a duct, damper or fan rarely stays in one unit.
When the work has to happen, how we reach it and how big the site is can all change the price. We take each of them into account, and the price is fixed before any work starts.
Why choose Duct Doctor in Coldblow
- CHAS, SafeContractor and ISO 9001
- Ventilation hygiene specialists since 2009
- Out-of-hours work and a 24/7 emergency line
- A written report with pictures after each visit
See our cost guide and how to check a contractor.
Part by part
Multi-storey and shared buildings
A fire in a duct in a shared building can affect far more than one kitchen, which makes keeping it clean all the more important. Your certificate and report give building managers the record they need.
Attenuators and discharge
Near the discharge, the air has cooled the most, which can mean heavier deposits. We include it in the clean and the readings.