Assess the space
Check the opening's intended purpose: deterring pigeons is different from protecting against a fall. State both needs clearly.
Choose the right materials
Ask for mesh and fittings chosen for the intended use. Never treat a bird-deterrent net as a certified fall barrier without specific assessment.
Plan the installation
A secure perimeter matters as much as the mesh; review the anchors and any access panels before fitting.
Keep it in good condition
Check for tears and movement regularly, and arrange repairs promptly rather than patching a damaged span casually.
Questions for your site visit
Ask the installer to explain what the proposed net is designed to do, its limits and the applicable fixing method.