Can spikes stop pigeons from nesting inside an opening?

Spikes treat suitable landing surfaces; they do not create continuous closure across an opening. A measured barrier or repair may be needed after species, nest status, ventilation, drainage, and access are checked.

Can netting cover equipment or fire systems?

Only with responsible facility and system review. The design must preserve required operation, clearance, inspection, emergency access, ventilation, drainage, and maintenance.

Answers /

Are bird spikes or netting better?

Neither is universally better. Netting is usually considered when a defined opening or three-dimensional area must be physically blocked. Spikes are considered on suitable landing surfaces where correct row coverage, edges, ends, corners, attachment, and human contact can be managed. The right choice follows the geometry and bird behavior, not a generic product ranking.

Editorial review: 2026-08-01. Verify current product, legal, property, and contract requirements before work.

Use the treated-zone test

Draw the exact area birds use and decide whether the goal is to block entry, remove a landing surface, or address an attractant. A ledge treatment cannot close an opening, and a net should not obstruct required access, ventilation, drainage, fire systems, or equipment service.

✓ species, landing, roosting, nesting, and entry observations
✓ ledge width, opening dimensions, corners, edges, beams, pipes, and doors
✓ substrate and attachment limitations
✓ maintenance access, entanglement risk, occupied areas, and aesthetics
✓ adjacent untreated surfaces and completion inspection

Comparison for a written proposal

For netting, specify mesh, perimeter cable, supports, penetrations, zippers or access panels, tension, and inspection. For spikes, specify product, rows, coverage width, ends, corners, gap control, attachment, and cleaning access.

Next step

Ask each bidder to mark both the treated and untreated zones and explain why the chosen system fits the observed behavior. Compare one practical alternative and the failure or maintenance conditions for each.

Sources and evidence boundaries

Michigan DNR — Pigeons and Feral Birds

Michigan Department of Natural Resources

Use: Use its habitat modification, sealing, netting, spike-strip, and structural-deterrent options as method categories to investigate.

Limit: The page does not design an installation, select a product, inspect a substrate, or guarantee one method at a property.

Illinois DPH — Bird Exclusion and Dispersal

Illinois Department of Public Health

Use: Use its emphasis on accurate species identification, attractants, exclusion options, cost, labor, and professional assessment.

Limit: Illinois guidance does not establish universal performance, maintenance, legality, or suitability for another jurisdiction or building.

Building America Solution Center — Screens and Other Deterrents

U.S. Department of Energy Building America Solution Center

Use: Use its opening, screening, access, equipment, attachment, and maintenance cautions when reviewing a barrier proposal.

Limit: The guide does not rank commercial spike and net systems or approve a property-specific design.

Related service evidence and next steps

Bird spikes installation Bird netting installation City pricing methodology Service pricing methodology Submit property evidence