Mould and Babies: Why You Should Never Ignore It

Why is mould more dangerous for babies than adults?

Mould is more dangerous for babies because their lungs, airways and immune systems are still developing, so they react more strongly to airborne spores than most adults. Babies also breathe faster and spend long hours close to floor level and cot mattresses, where spores and damp settle. This means a baby can be exposed for far longer and at higher concentrations than a parent realises. Repeated exposure has been linked to a higher risk of asthma developing in early childhood, alongside more frequent chest infections and disturbed sleep.

What are the signs mould is affecting my baby’s health?

The signs mould is affecting your baby usually appear as ongoing respiratory and skin symptoms that improve when you leave the home and return when you go back.

• Persistent coughing, wheezing or noisy breathing
• A blocked or runny nose that never fully clears
• Frequent chest or ear infections
• Red, itchy or irritated eyes
• Worsening eczema or unexplained skin rashes
• Disturbed sleep and increased fussiness

These symptoms overlap with common colds, so they are easy to dismiss. The pattern to watch for is symptoms that linger for weeks or clearly ease during time spent away from home. Always raise persistent symptoms with your GP or health visitor.

Where should I look for mould in a nursery?

You should look for mould in the coldest, least ventilated parts of the nursery first, as these collect the most condensation. Check behind the cot and any wardrobe pushed against an outside wall, around window frames and reveals, in the corners where walls meet ceilings, and beneath the cot mattress. Also inspect skirting boards, the backs of chests of drawers, and near any radiator or pipework. Musty smells with no visible growth often mean mould is hidden behind furniture, under flooring or within the wall itself, which is where a professional mould inspection proves its value.

How do I get rid of mould safely around a baby?

Getting rid of mould safely around a baby means removing the baby from the room during cleaning and treating the underlying moisture cause, not just wiping the surface.

1. Move your baby and their belongings to another room with the door closed.
2. Ventilate the area by opening windows before and during cleaning.
3. Wear gloves and a mask, and avoid dry brushing, which sends spores into the air.
4. Clean small areas of surface mould with a suitable mould remover, following the product instructions.
5. Wash or replace soft furnishings, cot bedding and curtains that are affected.
6. Fix the source of damp, whether that is condensation, a leak or poor ventilation.

Never treat large or recurring patches yourself with a baby in the home. Extensive growth, mould that returns quickly, or damp coming through walls needs professional assessment and proper mould remediation to remove it safely and stop it returning.

Should I get a professional damp and mould survey?

Yes, if mould keeps returning, covers a large area, or your baby has ongoing symptoms, a professional survey is the safest step. Surface cleaning treats the symptom, but persistent mould almost always has a hidden cause such as a leak, penetrating damp, condensation from inadequate ventilation, or cold bridging in the structure. A comprehensive damp and mould survey from Damp & Mould Solutions UK is a fixed £500 and gives you a full, insurance-ready written report with a photographic evidence appendix, clear findings and prioritised recommendations, so you know exactly what is causing the problem and what to do about it in order of urgency.

What affects the cost of fixing mould?

The cost of fixing mould depends on what is driving it and how far it has spread, which is exactly what the survey establishes. Simple condensation controlled by better ventilation and heating sits at the lower end of effort, while penetrating damp, failed damp-proofing, roof or plumbing leaks, or growth that has reached plaster and timber requires more extensive work. The size of the affected area, ease of access, and whether structural drying is needed all play a part. We set out the causes and prioritised recommendations in the report so you can plan the work sensibly, tackling the most urgent issues first.

If you've got damp, mould, or a leak, you already know it needs sorting.

The longer it sits, the worse it gets. Most investigations are booked within 48 hours.