Pigeon Guano RemovalIn Bishop Auckland& Across The North East

Long-established roosts leave dried, layered guano that can be several inches deep across loft floors, ceiling voids, mezzanine ledges, plant room surfaces and bridge soffits, mixed with feathers, nesting material, egg debris and occasionally dead birds. The older and drier the deposit, the more readily it breaks down into airborne dust once disturbed, which is why we assess depth and extent on the initial survey rather than pricing blind.

Guano is also corrosive over time; it can degrade timber, insulation, cabling, roofing felt and metalwork underneath it, so what looks like a surface cleaning job often reveals damage to the structure once the deposit is cleared. We flag anything of that kind during the works so it can be picked up in a repair or refurbishment scope rather than being discovered later.

Because the health risks associated with guano dust are broadly similar in principle to other biological and fibre contaminants we work with, we apply the same precautionary mindset used on asbestos jobs: assume the worst until the survey proves otherwise, and control exposure rather than relying on judgement calls once work is under way.

Every job starts with the affected area sealed as a controlled enclosure, using barriers, sheeting and negative pressure where the scale of contamination warrants it, to stop material and dust migrating into clean parts of the building. Operatives wear RPE that has been face-fit tested to them individually, a standard measure on our asbestos work that we carry across into guano clearance because the exposure risk from disturbed dust is comparable.

Material is damped down before removal to suppress dust, cleared by hand or with appropriate tools depending on the depth and surface, and double-bagged within the enclosure before being carried out through a controlled route. Nothing crosses from a contaminated area to a clean one without going through that route.

Once clearance is complete, surfaces are disinfected and the enclosure itself is decontaminated before it is dismantled. Operatives go through a decontamination step, removing and disposing of protective equipment correctly, washing down, before leaving site, the same discipline as an asbestos removal team follows at the end of a shift.

Jobs range from a single domestic loft with a moderate deposit through to large industrial roof voids, church towers, bridge structures and long-disused commercial premises where roosting has gone unchecked for years. The enclosure, RPE and decontamination approach scales with the job: a small loft clearance still gets sealed and worked under RPE, while a large industrial void gets a full controlled enclosure with staged access.

Where a guano-affected space forms part of a demolition or strip-out contract, we clear the contamination first, then continue straight into the soft strip or structural works with the same team, so there is no gap in programme waiting for a separate specialist to attend and then leave.

Where the underlying cause is an active roost rather than historic contamination, we coordinate proofing works once the space is clear, netting, spiking or mesh fitted by a proofing specialist, so the void does not get recontaminated. We do not act as a pest-control or bird-proofing contractor ourselves; we clear the contamination and coordinate that follow-on work so it happens in the right order.

Domestic loft clearances are usually a single space, a single access point and a clear brief, the loft needs to be safe to insulate, board out or convert. These jobs move quickly once surveyed, but the enclosure, RPE and disposal standard is identical to anything we do commercially; the scale is smaller, not the precaution.

Commercial and industrial buildings bring larger voids, multiple access points, live occupancy in adjoining areas, and often a documentation requirement: RAMS accepted by a principal contractor, waste transfer notes for a facilities or compliance file, and coordination around a wider refurbishment or demolition programme. Fire marshal cover, DBS-checked operatives and phased access are arranged where the site calls for them, the same as on our demolition contracts.

We are based at 9 The Mill, Ramshaw, Bishop Auckland, which keeps most of County Durham within a short mobilisation and puts Darlington, Teesside, Middlesbrough, Newcastle, Sunderland and North Yorkshire comfortably in reach for site visits and works. Contract works are taken nationwide.

Our permanent team is eight strong and scales to around twenty with trusted subcontractors, which lets us resource a large industrial void clearance without pulling cover from smaller jobs already booked in elsewhere.