Practical next steps

What to record and check safely

Older buildings often contain interconnected voids, pipe penetrations, worn thresholds and altered ventilation routes.

  1. 01

    Inspect accessible service entries

  2. 02

    Preserve required ventilation

  3. 03

    Coordinate with freeholders where defects are communal

  4. 04

    Assess activity before sealing routes

When to request an inspection

Arrange professional assessment when signs continue, identification is uncertain, several rooms or units may be involved, or the building has unresolved access or maintenance concerns. Avoid unverified pesticide use.

Reviewed: 16 July 2026 · Reviewer field awaiting confirmed technician details.