Kent · TR19 inspections and grease testing
Devil's Den TR19 inspection
For TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification in Devil's Den, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Kitchen extract systems with no recent grease readings
- Missing TR19 certificates or history
- Insurers asking for TR19 evidence
TR19 inspection in Devil's Den, done properly
BESA’s minimum cleaning frequencies depend on how long the kitchen cooks each day: every 3 months for heavy use of 12 to 16 hours a day, every 6 months for moderate use of 6 to 12 hours, and every 12 months for light use of 2 to 6 hours. Those are minimums, and grease readings help set the real interval. We’re often asked to deal with an insurer’s request for a TR19 audit and sites with gaps in their extract records, across access surveys, insurer audits and pre-clean surveys.
Somewhere as small as Devil's Den, commercial kitchens are few: perhaps a pub, a school or care home kitchen, or a hall used for events. Each still has a canopy and duct that collect grease.
Accreditations are easy to claim and worth checking. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Where
- Devil's Den (ME17)
- Wider area
- Kent
- Reporting
- Certificate plus before-and-after photos
- Quotes
- Fixed quote, typically within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
What a clean will not put right
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- Parts of the duct nobody can reach yet
- Fire safety duties beyond the extract system
- Fan breakdowns, which need a repair visit
If you are not sure, just phone us on 0345 646 2711, or email photos and we’ll give you a straight answer.
What the work covers
- Insurer audits
- Deposit thickness tests
- Wet film thickness tests
- Access surveys
- Pre-clean surveys
- Post-clean checks
Looking after it afterwards
Simple habits between visits make a real difference. We recommend:
- Share inspection reports with your insurer or broker when asked
- Diary the next grease test and clean
- Don’t box in or cover duct access panels
- Wipe the canopy surfaces regularly
The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.
Fit access panels where the survey finds sections cannot be reached, so grease is not left building in hidden parts.
Questions from Devil's Den
Can the work in Devil's Den be done at night or at weekends?
Yes, we can come after you close and finish before you open. It means the site in Devil's Den keeps running as normal. When you phone us on 0345 646 2711, or email photos, mention when the site is quiet.
Do you work in villages like Devil's Den?
Yes. Villages and rural sites across the South East are part of our work, Devil's Den included. Let us know about access, parking and anything unusual about getting there when you book.
What does a pre-clean survey involve?
We check the layout, the grease levels and the access, before anyone starts cleaning. Any access problems are flagged ahead of the clean.
Can you verify a clean after it’s been done?
Post-clean verification is a check after a clean, with fresh grease readings and photos. It can follow our own cleans or another contractor’s.
What information do you need?
Only a few details: the address, the site type, your opening hours and how we reach the system. Photos and the last report help too. After that, simply give us a ring on 0345 646 2711, or email photos.
What do you do with what you remove?
It’s contained and taken away. Grease, debris and waste water are collected as the work goes on, so it doesn’t spread.
What’s TR19?
TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
What grease levels does TR19 allow?
TR19® Grease says grease should not go over a mean of 200 microns between cleans. Any reading of 500 microns or more needs immediate spot cleaning.
Different parts, different methods
Extract fan and discharge
Grease on the fan adds to wear. The inspection shows whether it needs cleaning now.
Vertical risers
Access to risers is often limited. We record what can and can’t be reached.
Places near Devil's Den
What else we do in Devil's Den
Leave it or put it right?
Finding a hotspot early means a targeted spot clean rather than a bigger problem later. Left alone, grease keeps building between cleans. If the system at a site near Devil's Den fails, there may be nowhere nearby to move to.
We do not list prices on the website, because each job is priced on what it involves. For a fixed quote, call 0345 646 2711, or send details by email, and we’ll explain what it covers.
Why Devil's Den businesses choose us
- Photo reports with every job
- CHAS and SafeContractor accredited, with ISO 9001
- In business since 2009
- Every job surveyed first
Read our cost guide and how to check a contractor.
TR19 inspection in Devil's Den: the local picture
Food Standards Agency records include about 3 bars, pubs and nightclubs across Devil's Den and its immediate surroundings (about a mile and a half). Any of them serving cooked food has an extract to keep clean, from canopy to discharge. Environmental health officers from Maidstone council inspect food businesses in Devil's Den. Extraction counts as kitchen equipment, so its condition can come up on the day. Before-and-after pictures from each clean are a simple way to show the extract is in hand. Kent Fire and Rescue Service covers Devil's Den. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
Historic houses near Devil's Den, such as Stoneacre about 4 miles north, are a reminder that older buildings with event kitchens can have long, awkward duct routes.
Devil's Den is about 5 miles south of Maidstone, in Kent. From the centre of Devil's Den to the outskirts, TR19 inspection is available to all kinds of commercial premises, from a single unit to a large public building. Devil's Den is one of 922 towns, villages and districts in Kent we cover for TR19 inspection.
Postcode districts we cover here for TR19 inspection: ME17. Close by, we work in Farthing Green (1 mile south-east), Rabbit's Cross (1 mile west), Cross-at-Hand (1 mile west), Hawkenbury (1 mile south) and Staplehurst (2 miles south-west). We also work in nearby towns such as Maidstone (5 miles north), Ashford (13 miles east), Sittingbourne (12 miles north-east), Royal Tunbridge Wells (14 miles west), Tonbridge (13 miles west) and Kings Hill (9 miles north-west).
Local landmarks in Devil's Den
For rail, the closest station is Staplehurst station, about 1.8 miles south-west. Well-known places in the area include Sutton Valence Castle (1.6 miles north-east) and South East Romany Museum (3 miles south-west).
When to call us in Devil's Den
Not every section of a kitchen extract is easy to get to, and grease can be missed there clean after clean. A survey finds the sections that cannot be reached, so the gaps can be closed.
What we’re most often called out for:
- Checking the result of a recent clean
- Insurers asking for TR19 evidence
- Missing access panels found on survey
- Systems that need surveying before cleaning
For kitchens in and around Devil's Den, the clean covers everything from the canopy to the discharge.
Comparing quotes
- When they can work, and whether that is outside your opening hours
- Whether the whole system is included, or only the parts that are easy to reach
- How areas they can’t reach will be recorded
- What insurance they carry
The process
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. It takes anything from an hour for a small canopy and short duct to a good part of a day for a large site, and we clear up before we go. Photos of the system and how to reach it help us plan a visit to Devil's Den.
- After the clean, we arrange a time to check the system.
- The same access points are opened up.
- Grease readings are taken again at set points.
- We photograph each area to record how it was left.
- We report the findings and flag any areas that need more work.
Preparing for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Allow time for equipment near the work to be turned off and cool down
- Agree a time when the area can be out of use
Get a fixed quote
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
Read more
What affects the cost of TR19 inspection
The quote reflects the site in front of us. We consider:
- One-off work versus a regular cycle
- The times the site is available
- What state the system is in
- Travel, parking and unloading
Putting the work off seldom saves money. Problems in a system tend to grow, which can make the next visit longer. If you’re unsure, give us a ring on 0345 646 2711, or email photos for straight advice and a fixed quote.
What to send for a quote
A few details help us quote accurately. With your enquiry, please include:
- The roof, plant room or outside wall the system runs to
- Any symptoms, from odd noises to smells or leaks
- Any previous report or certificate
- The times we could work without disrupting the site
For a fixed quote, call us on 0345 646 2711, or email photos and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We typically come back within one working day.