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Common Water Issue in BC
Persistent Musty Odour
A musty or earthy smell that persists despite cleaning indicates active microbial growth from hidden moisture. The odour is caused by microbial volatile organic compounds (MVOCs) released by mould and bacteria. In BC's humid climate, this is a common early warning sign of an undetected leak.
Possible Causes
- •Hidden plumbing leak within wall, ceiling, or floor cavity
- •Chronic high humidity in basement or crawlspace exceeding 60% RH
- •Building envelope moisture trapped within wall assemblies
- •Past water damage that was not fully dried before wall closure
- •HVAC system condensation or drain pan overflow
Recommended Steps
- 1Use your nose to locate the strongest source of the odour
- 2Check humidity levels with a hygrometer — target below 60%
- 3Inspect basements, crawlspaces, and under-sink cabinets for visible mould
- 4Call for a thermal imaging and moisture mapping inspection to find hidden moisture
Related Services
Need Professional Help?
Don't let a small leak become a big problem. Contact LeakInspections.ca — a division of Anyleak.ca and Leak.ca — for expert diagnosis.