Using Bird Netting to Close Openings, Light Wells and Sheltered Voids

If you are researching bird netting for openings, do not start with the product name. Start with one question: why do birds keep using this exact point? Voids that birds can enter from multiple directions often need a perimeter exclusion barrier rather than protection of a single landing surface.

This guide builds the answer from observation, measurement and site use, then shows how to check the result after installation.

Turn site geometry into a clear quantity

One total number is not enough; record dimensions by separate work zone.

Small details that leave a new landing point

• Installing before the actual bird-use point is identified: the wrong surface may be protected while the real perch remains open.
• Treating the main point while leaving the nearest obvious alternative: birds may simply move a short distance rather than leave the site.
• Leaving a small gap around a pipe or corner: birds do not need a large opening when a repeatable entry route exists.
• Blocking maintenance or drainage: a system that deters birds but prevents AC service or traps water creates a new problem.
• Never inspecting the result later: weather and subsequent maintenance work can open a gap or change system condition over time.

If you are still comparing approaches, it can also help to read A Practical Bird Control Plan for Villa Roofs from Survey to Handover and then How to Estimate Linear Metres for Bird Spike Installation Before Requesting a Quote; these guides approach the site from a different angle rather than repeating the same checklist.

Same bird, different problem

Balcony open at the front

The perimeter needs defined fixing points while the door, ventilation and AC access remain usable.

Light well or internal void

Identify every entry side rather than only the side visible from ground level.

Opening with pipes and services

The net needs detailed closure around penetrations so a small gap does not become a permanent entry point.

What to write down during a survey

Record the time birds appear, their first landing point and where they move next. Connect that behaviour to number of open entry sides and sound fixing points around the perimeter. A repeated pattern across several observations is more useful than one snapshot.

The dirtiest ledge can be only a second stop while the primary arrival point sits above or behind it.

Signs that identify the real problem point

Start with evidence rather than assumptions. If possible, observe the area at more than one time of day and connect signs of activity to the actual landing or entry point. For bird netting for openings, pay particular attention to:

• number of open entry sides: Do not only record its presence; note how it relates to the next ledge so you can tell whether it is an isolated point or part of a wider route.
• services or equipment inside the void: This helps distinguish a regularly used perch from an area showing only old evidence.
• sound fixing points around the perimeter: If the same sign appears in several zones, treat the site as one connected system instead of installing isolated pieces one at a time.
• access for cleaning after exclusion: Photograph it both close up and from a wider angle; the wide view often reveals an alternative perch that a close image misses.

After the survey, classify each point as a perch, entry route, possible nesting void or alternative perch birds may shift to. That classification makes the choice between spikes, netting and other deterrents much more precise.

A post-installation review plan

During the first days, watch fresh droppings and adjacent ledges. After two weeks, inspect corners, ends and any feature slightly higher than the treated point. After AC or roof maintenance, confirm the system was not opened or moved.

If activity shifts, record the new point before requesting rework; it may be the alternative perch that only became attractive after the primary route was closed.