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Health
23 August 2026

Is it safe to sleep in a room with mould?

Quick answer

Sleeping in a mouldy room isn't ideal — you spend hours breathing spores in an enclosed space, which can worsen allergies, asthma and sleep quality. A small patch isn't an emergency for healthy adults, but bedroom mould should be treated promptly, especially for children and anyone with breathing issues.

Why the bedroom matters more

You spend around a third of your life asleep, usually in a closed room with limited ventilation. That makes the bedroom the place where mould exposure adds up most — hours of breathing the same air, close to the source. It's the one room where even modest mould is worth taking seriously.

What overnight exposure can do

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For a healthy adult, a small bedroom patch isn't a crisis, but it can still cause a blocked or runny nose, itchy eyes, a night-time cough and poorer sleep. For children, older people, and anyone with asthma or allergies, the effect is stronger — read more on how mould affects health. If symptoms ease when you sleep elsewhere and return at home, the room is the likely culprit. Always raise health symptoms with a doctor.

Common bedroom mould spots

It typically appears on cold external walls, in corners, around windows, and behind the bed or wardrobe where airflow is blocked. The usual cause is condensation — we breathe out a lot of moisture overnight, and in a closed room it settles on cold surfaces.

What to do

Short term: improve ventilation, move the bed away from affected walls, and reduce humidity. But bedroom mould is worth resolving properly rather than living with — get the moisture source fixed and the area treated with mould treatment, or professional mould removal if it's in the plaster. An mould inspection confirms the cause and how serious it is.

Mould in the room you sleep in? Don't wait — book a €75 inspection or call +357 96 738151.

Frequently asked questions

Can sleeping in a mouldy room make you ill?
It can worsen allergies, asthma and sleep quality due to prolonged spore exposure. Healthy adults may notice mild symptoms; sensitive people are more affected. Treat it promptly.
Should I sleep somewhere else if my bedroom has mould?
For a large or spreading problem, or if you or a child have breathing issues, sleeping elsewhere until it's treated is sensible. A small patch should still be dealt with quickly.
Why does my bedroom get mould?
We release a lot of moisture breathing overnight. In a closed, poorly ventilated room it condenses on cold walls and windows and feeds mould.
Is bedroom mould dangerous for children?
Children are more sensitive to mould, so bedroom mould in a child's room should be treated promptly and any health symptoms discussed with a doctor.

Not sure how bad yours is?

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

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