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Biomass flue cleaning for schools and estates

Schools, colleges and country estates were among the first big users of biomass. A lot of that plant is now old enough to need watching closely.

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Older plant, longer flues

Many school and estate systems went in during the early years of the Renewable Heat Incentive. They’re now well into their working life, and the flues are where age shows first: corrosion at joints, failing terminals, deposits that have built up over years of irregular cleaning.

Estate systems often have long flue runs and several boilers spread across a site. We survey the whole system first, then set an interval for each flue rather than one date for everything.

For schools and colleges we plan around term time where we can, so the clean happens when the heating load is lowest.

Deposits inside a biomass flue
Years of build-up in an estate flue
How we handle it

What’s different about this work

Timing

Holiday windows

Cleans booked into holidays or low-demand periods where possible.

Planning

Whole-site survey

Every boiler and flue on the estate surveyed and scheduled individually.

Records

One file

A report per flue and a certificate per boiler, all in one place.

Ageing plant

Trend scoring

Scores tracked visit to visit, so ageing flues are flagged early.

Every visit is written up

Each flue gets a condition score out of 100 across five areas — soot, obstruction, liner, structural integrity and defects — with photographs from inside the flue. Each boiler gets its own certificate, and a sticker on the boiler shows when it was last cleaned and when it’s next due.

Because the scoring is the same every visit, you can see a flue getting worse over a year or two and plan the repair, rather than finding out when it fails.

See an example report — it’s for a made-up site, so you can see exactly what you’d get without anyone else’s details on show.

Deposits inside a biomass flue recorded during inspection
Photographed inside the flue on every visit
Other sectors

Who else we work for

HealthcareHospitals, care homes and clinical sites Secure and restricted sitesVetted staff, gatehouse checks, escorted working Schools, colleges and estatesTerm-time planning and rural estate plant Housing and district heatingCommunal plant serving residents Boiler maintenance contractorsFlue cleaning subcontracted to us
Commercial and ruralCommercial buildings, farms and rural businesses
What’s not included. We clean flues and check them for obstructions. We don’t service boilers and we don’t clean particulate filters — we work alongside whoever does. Where a flue needs a MEWP or scaffold to reach, we’ll tell you at the survey and price the access separately.
Common questions

Things people ask us

Can you work during school holidays?

Yes. Holidays and low-demand periods are the best time for most schools, and we’ll book ahead to secure them.

We have boilers on several buildings. One visit?

Usually, yes. We survey the whole site and plan the clean as one visit where the shutdowns allow it.

Site survey

Request a site survey

Tell us what you’re running and roughly where. We’ll come and look before quoting anything.

We only need the first half of the site postcode at this stage. Nothing you send here is shared or published.

Rather talk it through? Call 07440 173696 or WhatsApp us.

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