Bedroom Mould: Why Your Sleeping Space Is at Risk

You spend 8 hours every night in your bedroom — more than any other room. If mould is present, you’re getting the highest cumulative exposure in the house. And bedrooms are more mould-prone than most people realise.

Why Bedrooms Get Mouldy

Every sleeping adult releases about 200ml of moisture through breathing and perspiration overnight. In a closed bedroom with two adults, that’s nearly half a litre of water vapour with nowhere to go. Add cold external walls, minimal ventilation, and a wardrobe blocking airflow — and mould conditions are perfect.

The Wardrobe Wall Problem

The most common bedroom mould in Adelaide homes appears on walls behind wardrobes, particularly on south-facing or west-facing external walls. The wardrobe traps warm, moist air against the cold wall surface, creating condensation and persistent wall mould. This is epidemic in older homes across Burnside, Unley, and Prospect.

Solutions

Move wardrobes 50-100mm from external walls. Open bedroom windows briefly each morning. Don’t dry clothes on bedroom radiators. Consider a small dehumidifier during winter months. If mould is already established behind furniture, professional inspection is essential — surface cleaning won’t address spores in the wall lining. Health risks of sleeping near mould.