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Common Water Issue in BC
Damp or Stained Walls
Walls that feel damp to the touch or show staining indicate moisture within the wall assembly. In BC's coastal climate, damp walls are often caused by condensation, envelope leaks, or plumbing failures. The location and pattern of dampness provide clues to the source.
Possible Causes
- •Condensation on cold exterior walls in winter (insufficient insulation or air leakage)
- •Leaking window or door frame allowing water entry into the wall cavity
- •Plumbing supply line leak within the wall
- •Building envelope failure — water penetrating exterior cladding
- •High indoor humidity condensing on cold wall surfaces
Recommended Steps
- 1Check the exterior side of the wall for potential water entry points
- 2Measure humidity levels in the room — keep below 60%
- 3Feel for drafts around windows and doors indicating air leakage seals
- 4Schedule thermal imaging to differentiate between condensation, envelope leaks, and plumbing leaks
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.