Greater London · Ductwork cleaning
Duct cleaning in St Johns
Ductwork cleaning in St Johns from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- A duct clean needed for an insurer
- Fat dripping from the ductwork
- A duct nobody has opened in years
Ductwork cleaning in St Johns: the local picture
The FSA’s food hygiene register includes about 79 pubs, bars and clubs and about 11 hotels, B&Bs and guest houses across St Johns and its immediate surroundings (about a mile and a half). Breakfasts, bar meals and functions all put grease into the extract wherever they’re cooked. Overnight is the normal time to clean a London kitchen extract, so trading is not affected. Environmental health officers from Greenwich council inspect food businesses in St Johns. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Before-and-after pictures from each clean are a simple way to show the extract is in hand.
A hall kitchen that only cooks for events, whether near Church of St John or elsewhere in St Johns, still needs its extract cleaned, just less often. Healthcare kitchens, like those at hospitals such as Miller General Hospital (about less than half a mile north), often cook for long hours, which puts them in BESA’s heavier-use bands.
St Johns is about 4 miles south-east of London, in Greater London. Whether your site is in the middle of St Johns or further out, ductwork cleaning is available to all kinds of commercial premises, from small sites to large estates. We cover 764 places across Greater London, large and small.
Work in SE13, SE10 and SE8 follows the same survey, fixed quote and written report as everywhere else we cover. That includes premises on Avon Road, Mill Lane and Clare Road and nearby roads. Main roads around St Johns include the A2210 and A2211, so getting to you is simple for evening and night visits. Close by, we work in New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). Within a short drive, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Local landmarks in St Johns
Around St Johns, our work takes us to kitchens and buildings near Wickham Arms, Brookmill Park and Addey and Stanhope School, among other places. Nearby too are St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). St Johns has its own railway station: St Johns station. Nearby you will also find Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). Not far away are Brookmill Road Local Nature Reserve and Tower Hill.
Ductwork cleaning for kitchens and businesses in St Johns
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 bends and junctions, vertical risers and access panels, and the jobs we see most are grease leaking from duct joints and stale grease odours from the duct.
In London, few kitchens can spare a day to close, so extract cleaning in St Johns is typically done overnight, after the last service. Before the clean, we agree loading, parking and roof access with whoever manages the building.
We are CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Where
- St Johns (SE13, SE10, SE8)
- Region
- Greater London
- Reporting
- Certificate plus before-and-after photos
- Quote
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Updated
- 30 October 2026
What we’re called out for in St Johns
Grease in a duct running from a kitchen in St Johns is as much a fire risk as in any building. Burning grease can carry fire through the ductwork to other rooms or floors, which is why the responsible person needs it under control.
If you notice any of these, it’s worth a diagnosis:
- Stale grease odours from the duct
- Grease seeping out of the duct seams
- Readings above 200 microns from a grease thickness test
- Thick crusts of old grease along the duct
For schools such as Ashmead Primary School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.
What your quote should include
- What insurance they carry
- What happens if part of the system can’t be accessed
- If they look at the system before pricing
- How VAT is shown on the quote
Fixed quotes for ductwork cleaning in St Johns
The survey tells us what the work involves. The main factors are:
- The condition of the system
- Site requirements such as sign-in and permits
- Whether we need access equipment or extra panels
- How many systems or sites are involved
One small site or a whole estate, we price it on the same basis: the work involved, the access and the timing. The price is fixed before work begins.
Helping us quote
Many jobs can be priced from photos and some basics. Useful things to send:
- The times we could work without disrupting the site
- The site address and the type of premises
- Photos showing the whole system and its surroundings
- Problems your staff have spotted
We do not publish a price list, because no two systems are the same. We look at your system first, from pictures or on a visit, then send a fixed quote. To start, give us a ring on 0345 646 2711, or email photos.
The process
Your staff do not need to do much on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Before we leave, the area is tidied and the paperwork follows. In St Johns, as across London, we typically work overnight or at weekends and hand the site back ready to open.
- First the duct route is traced and every access point noted.
- Set points along the runs are tested for grease.
- Through the access panels, thick grease is removed by hand first.
- 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.
How to prepare
- Move anything stored near the system
- Tell us about site rules, permits or sign-in
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Ask for a quote
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, the quote is fixed before any work is booked.
Read more
What ductwork cleaning can’t fix
Ductwork cleaning cannot fix everything, and we will tell you before any work starts. It doesn’t solve:
- Fire dampers that do not close (they need testing and remedials)
- Duct sections that need replacing
- A worn-out fan that needs replacing
If in doubt, call 0345 646 2711, or email photos and we will say what we think before booking.
Where we work
- Horizontal duct runs
- Attenuators
- Access panels
- Bends and junctions
- Multi-storey ducts
- Vertical risers
Multi-site and managed buildings
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
Whether it’s one building or many, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Different parts, different methods
Attenuators and discharge
Near the discharge, the air has cooled the most, so it can collect more grease than expected. It’s tested and cleaned along with the rest.
Horizontal duct runs
The underside of a horizontal duct collects the most grease. We scrape out the heavy layer first, then the walls and roof are cleaned too.
What else we do in St Johns
Keeping the system healthy
Good habits slow the build-up between visits. A few tips:
- Keep the fan on while anything is cooking
- Consider fitting panels where the report shows gaps
- Have the grease measured if cooking hours go up
- Never cook with a filter missing
The report gives a recommended next clean date, based on the readings and your daily cooking hours, in line with BESA guidance.
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.
Questions from St Johns
Which fire service covers St Johns?
That is London Fire Brigade. A recent cleaning certificate and a note of the next clean date show that grease in the extract is being managed.
Can you come to St Johns after we close?
Yes. We work evenings, overnight and at weekends. It means the site in St Johns keeps running as normal. Let us know the hours you’re closed and we will book within them.
Who has the legal duty for fire safety?
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.
Can extra access doors be added to the duct?
Yes, we fit access panels where the duct needs them. It means more of the duct can be cleaned next time, and the report will show where they’re needed.
How long does ductwork cleaning take?
Short runs are quick, while long ducts and tall risers can need more than one visit. We plan the work around your kitchen.
What if part of the duct cannot be reached?
Ductwork needs access to be cleaned. Those parts are listed, and we can install panels so they’re reached next time.
How much does ductwork cleaning cost in St Johns?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before any work starts.
Will I get a report after the ducts are cleaned?
You get a photo report with before and after pictures, and a full TR19 clean also comes with a certificate issued through the BESCA Vent Hygiene Elite portal. Keep both in the maintenance log.