Damp and mould: the most under-rated indoor health risk
In a Nordic climate, moisture is the quiet driver of a lot of respiratory trouble - and it's measurable.
Wherever moisture lingers - a cold wall, a failed seal, a poorly ventilated bathroom - mould and other microbes take hold and release spores and fragments into the air. In the Finnish climate, with large indoor–outdoor temperature gaps and long heating seasons, it’s a common and easily-missed problem.
Why it matters more than people think
WHO’s review found that occupants of damp or mouldy buildings carry up to around a 75% greater risk of respiratory symptoms and asthma, and estimated that roughly 13% of childhood asthma in the region is attributable to damp housing - with children particularly susceptible. [12]
The fix is moisture, not bleach
Because dampness is the underlying driver, the durable fix is controlling moisture rather than scrubbing symptoms: keep relative humidity roughly 30–50%, fix leaks and condensation promptly, ventilate kitchens and bathrooms, and warm up the cold surfaces where condensation forms. [12]
How we help
Continuous humidity and temperature monitoring catches the conditions that let mould grow - often before anything is visible, which is exactly what a single spot-check tends to miss.