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Symptoms
25 August 2026

Mould in the bedroom: causes, health and how to stop it

Quick answer

Bedroom mould is usually caused by overnight condensation — we release a lot of moisture breathing as we sleep, and in a closed room it settles on cold external walls. Improve ventilation, move furniture off cold walls, reduce humidity, and treat affected areas.

Why bedrooms get mould

Bedrooms are closed for hours every night while we breathe out litres of moisture. With the door shut and windows closed, that humid air condenses on the coldest surfaces — typically external walls, corners and behind furniture. It's why bedroom mould so often appears low in a corner or behind the bed.

Why it matters more here

Not sure how bad yours is?

Book a €75 inspection and know for certain — or call us now.

You spend a third of your life in this room, so it's worth taking seriously — see is it safe to sleep in a room with mould. For anyone with allergies or asthma, bedroom mould can affect sleep and breathing.

Common hotspots

Cold external walls, window reveals, ceiling corners, and behind wardrobes and headboards where air can't circulate. The cause is nearly always condensation from poor ventilation.

How to fix it

Ventilate the room daily, pull furniture a few centimetres off external walls, reduce humidity, and don't dry laundry in there. Treat existing mould with mould treatment; if it's in the plaster or keeps returning, get it inspected. An mould inspection finds the moisture source, and for persistently damp bedrooms a monthly maintenance plan keeps it clear.

Mould in the room you sleep in? book a €75 inspection or call +357 96 738151.

Frequently asked questions

Why does my bedroom get mould in winter?
Cold external walls plus the moisture we breathe out overnight create condensation, which feeds mould. Winter makes walls colder, so it's worse.
How do I stop mould behind my bed?
Move the bed a few centimetres off the external wall to let air circulate, ventilate the room daily, and reduce humidity.
Is bedroom mould bad for your health?
It can worsen allergies, asthma and sleep quality due to prolonged overnight exposure, so it's worth treating promptly, especially in children's rooms.
Should I keep my bedroom window open to prevent mould?
Regular ventilation helps a lot. Airing the room daily and using trickle vents or an extractor reduces the humidity that causes bedroom mould.

Not sure how bad yours is?

Book a €75 inspection and know for certain — or call us now.

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