Edinburgh's outdoor PM2.5 is generally lower than English equivalents, but Scotland's damper climate and the city's stone-built tenement stock combine to push indoor humidity persistently above 65% RH in autumn and winter — the mould comfort zone.
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Edinburgh's air-quality context
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Building-type risks
Tenement and Georgian flats. Single-skin stone, poor airtightness, retrofitted glazing without ventilation — high humidity, condensation, mould. Humidity & health →
Universities and offices. Heritage buildings with bolted-on AHUs; commissioning and filter spec often the binding constraint.
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What to do
Manage humidity first (target 40–60% RH), add mechanical extract or MVHR in dwellings, monitor CO₂ and humidity continuously, and inspect for mould wherever surface temperatures fall below dew point. Mould air testing →
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Services across Edinburgh & Lothian
IAQ testing, mould and damp investigation, ventilation assessment and monitoring across Edinburgh, Leith, the Lothians and central Scotland. Reports against WHO, BS EN 16798-1, WELL and BREEAM frameworks.