Walk around any Melbourne suburb early in the morning and you will hear it. Birds settle into roofs, gutters and ledges as if they own the place. At first it feels harmless. Then the damage starts.
Bird netting exists for one reason. It closes the space off before the cost builds up.
What is bird netting?
Bird netting is a net suspended under tension across an opening so birds cannot get through it. It works by exclusion. The birds are not frightened or moved on, they simply cannot reach the space behind it.
That is what separates it from spikes and deterrent devices, which change where a bird lands rather than blocking access. Behaviour based methods can work on a ledge. They do not work on a roof void with a row of open eave vents.
Netting, mesh and spikes are three different tools
These get used interchangeably in quotes and they should not be.
- Netting spans large openings and voids. Suspended under tension from a perimeter cable or fixed to structure.
- Mesh is a rigid or semi rigid barrier fixed to a defined opening or perimeter. Used for eave vents, fascia gaps and small openings.
- Spikes stop birds landing on a surface. They do nothing about an opening. Useful on ridges, ledges, parapets and signage.
Most properties end up needing two of the three. A common combination is mesh across the vent openings as the primary barrier, netting inside the void as a secondary one, and spikes on the external ledges where birds stage before entering. If you are weighing up which one your building needs, this is how bird proofing methods compare.
What bird activity actually costs you
Nesting in roof cavities
Birds look for warm, protected spaces, and a roof cavity is exactly that. Once they settle in they return. You notice scratching and movement early in the morning, nesting material blocking airflow, and feathers and debris inside the roof space.
Nests trap moisture. Timber softens, insulation loses effectiveness, and a small problem becomes a repair.
Blocked gutters and drainage
Gutters do one job. They move water away from the building. Nesting material, feathers and droppings collect inside them and the water has nowhere to go.
You see it as water spilling over during rain, damp patches on walls, and early signs of mould near ceilings. Blocked gutters cause hidden water damage, and hidden damage is the expensive kind.
Droppings on surfaces
Bird droppings are acidic. On roofs, driveways, walls and painted surfaces they stain and break down coatings, and on metal they corrode.
Commercial buildings carry more of this risk than homes, because signage, walkways and entry points are what customers look at. Cleaning helps for a few days. If the birds are still active, so is the problem.
Health risks
Droppings and nesting material carry bacteria and, once dried out, become airborne when disturbed. That is a risk anywhere, and it is a bigger one where birds have settled near an air conditioning intake or a roof vent, because the airflow pulls it inside.
Where bird netting is used on Melbourne buildings
- Warehouses and distribution centres: Pigeons roosting on racking and rafters contaminate stock and create a hazard on the floor below.
- Food processing and manufacturing: Bird activity above a production or storage area is a food safety issue before it is anything else.
- Loading docks and roller door openings: Sheltered, open at one end, directly above goods movement.
- Roof voids and plant rooms: Usually entered through eave vents rather than the roof itself.
- Car parks and covered walkways: Droppings on vehicles and pedestrian surfaces.
- Aged care and hospital buildings: Infection control makes accumulated droppings a compliance matter.
- Residential roofs, eaves and gutter lines: Where the opening is too large or too awkward for a rigid barrier.
Why bird netting installations fail
When we assess a site that already has netting and still has birds, the cause is almost always one of four things.
The aperture is wrong for the species
Netting is sized to the target bird. A net that excludes pigeons will not exclude sparrows or starlings, which are smaller and pass straight through. Identifying the species before the net is ordered is what decides whether the installation works.
The tension has gone
A net that sags inward creates slack against the structure and birds push through at the low point. Tension is set at installation and it is the first thing to check on an existing net.
The perimeter is not sealed
Nets fail at junctions rather than in the middle. The gap opens where the net meets a steel column, a downpipe, a bracket or a change in the roof line. Those junctions are where an inspection focuses.
The fixings went into the wrong thing
Fixings secured to lining or cladding rather than to structure work loose under building movement and wind load. The net can look intact from the ground while the fixings have already pulled.
This is also why do it yourself netting tends to fail. The material is rarely the problem. Tensioning and fixing are.
What an assessment covers
Before anything is quoted, four things get established.
- One, the species: This sets the aperture and it also sets the legal position. Native birds are protected under the Wildlife Act 1975 (Vic) and an active nest generally cannot be disturbed without an Authority to Control Wildlife. Feral pigeons, common mynas, starlings and house sparrows are introduced species and are not native wildlife.
- Two, the access points: Where the birds are actually entering, which is often not where they are seen.
- Three, the fixing options: What the net can be secured to, and whether elevated work platforms or scaffolding are needed.
- Four, the clean-down: Accumulated droppings and nesting material come out before any barrier goes up. On a site left for a few seasons this is the larger part of the job.
Compliance on commercial sites
Two things usually drive a commercial enquiry rather than the birds themselves.
- A WHS audit finding: Droppings create a slip hazard and a contamination risk, and an auditor wants documentation of what was done. Bird work on a commercial site should come with a written scope and a completion report you can put in front of them.
- Food safety obligations: On a HACCP site, bird activity above or near a production or storage area is a breach in its own right. It does not need to have caused contamination yet.
Tom’s Pest Control Melbourne is AEPMA member 133585, licensed and insured, with technicians holding current Victorian pest management licences under the Public Health and Wellbeing Act 2008. Roof and height access is carried out to Victorian working at height requirements.
Frequently asked questions
How long does bird netting last?
A UV stabilised net installed under correct tension with fixings into structure is a long term barrier rather than a seasonal fix. What shortens its life is not the material, it is a fixing that was never right. An annual visual check of the perimeter and the fixing line is enough for most buildings.
Does netting harm the birds?
No. Exclusion netting denies access rather than trapping or injuring. Birds land on it, find no way through, and move elsewhere. Checking for live birds behind the barrier before it is closed is part of doing the job properly.
Can netting be installed while a site keeps operating?
Usually yes. On warehouse and food sites the work is often scheduled outside production hours. Access requirements are established at assessment so the schedule is known before the job starts.
What is the difference between bird netting and bird proofing?
Bird proofing is the general term for physically excluding birds. Netting is one method within it, suited to large openings and voids. Mesh, spikes and shock track are others. The right choice depends on whether you are closing an opening or stopping birds landing on a surface.
Do birds under solar panels need netting?
No. A residential solar array is sealed with a perimeter mesh clipped to the panel frame, not with netting. That is a different job and it is covered on our solar panel bird proofing Melbourne page.
Get your property assessed
If you are hearing movement in the roof, clearing the same gutter every few weeks, or dealing with an audit finding, the assessment is the place to start. Call (03) 9034 5957 or request a quote online.