Why Silverfish Are a Particular Issue in North Vancouver
North Vancouver receives among the highest annual precipitation in Metro Vancouver due to its mountain position and orographic rainfall effect. This elevated annual rainfall keeps below-grade spaces in older Canyon Heights and Lynn Valley homes at persistently higher humidity levels than equivalent-era homes in flatter, drier cities. Older homes from the 1950s to 1980s in these hillside neighbourhoods carry the below-grade moisture conditions silverfish colonize.
Basement suites in older Canyon Heights and Lynn Valley homes — converted over the decades from original below-grade storage or workshop spaces — carry original plumbing and limited ventilation that accumulates the moisture silverfish need.
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