Moisture doesn’t destroy a building overnight. It works quietly — weakening framing, corroding fasteners, feeding mould, and dropping insulation performance — until something visible finally fails.
Three ways moisture moves
- Bulk water — rain, leaks, and flooding
- Capillary action — moisture wicking through porous materials
- Vapour diffusion and air leakage — humid air moving through envelope assemblies
Why it matters in Newfoundland
Wind-driven rain, freeze-thaw cycles, and long humid shoulder seasons combine to give Newfoundland one of the most challenging moisture climates in North America. Buildings that work fine in Ontario or Alberta routinely fail here.
How we diagnose it
A proper moisture investigation maps where water is, where it’s coming from, and where it’s headed — before recommending any remediation.
Frequently asked questions
- What moisture reading is 'too high'?
- It depends on the material. Framing above 20% is a concern; masonry and concrete have their own baselines. The absolute number matters less than trend and pattern.
- Is a dehumidifier enough?
- Sometimes. But if the source is bulk water or vapour drive, a dehumidifier only manages the symptom. Diagnosis first.