Building Adjacency & Speech Leakage
How speech escapes through walls, doors, stair cores, and facade paths, and why partition STC alone does not answer the boardroom question.
Building adjacency leakage is speech that leaves a room into semi-public circulation: fire-exit stairways, shared restrooms, corridors, and lobby space. It feels like a partition problem, but the flanking route may be a door, a glazing line, duct penetration, or structure-borne path through the slab.
Meeting suites and boardrooms are the highest-stakes adjacency cases because the listener does not need equipment to exploit casual leakage. Someone waiting outside can catch deal terms, personnel decisions, or client identifiers.
Facade and window paths add deliberate listening risk on executive floors. Contact-microphone and optical standoff threats are different from casual overhearing, but they share the same need: map the route before prescribing a product.
Acoustic leakage measurement gives pass/fail evidence on specific paths before you invest in masking or hardening. Where multiple routes exist, we treat each proportionately rather than defaulting to rebuild.
Masking and treatments sized to the room restore privacy when rebuild is not the right first move. Compare delivery levels when a system is part of the answer, and book design or install under Services once measurement defines scope.