If your home in Wigan starts to smell musty every time it rains, it’s a sign that moisture is being trapped somewhere in the property.
Even when walls and floors look dry, damp air and poor ventilation can create that stale, earthy odour that lingers for days.
At Weather Wise Solutions, we trace the true source of hidden damp and improve airflow to keep your home fresh, healthy, and dry all year round.
🌧️ Why a Musty Smell Appears After Rain
Rain increases humidity both outside and inside your home.
If moisture finds a way in — or can’t escape properly — it creates the perfect conditions for mould, bacteria, and that familiar musty scent.
Common causes include:
1️⃣ Moisture Ingress Through Walls or Floors
When brickwork or pointing becomes porous, rainwater seeps into the wall.
In older Wigan homes with solid walls or worn damp proof courses, moisture gets trapped inside the structure and releases a damp odour as it dries.
2️⃣ Poor Subfloor Ventilation
Homes with suspended timber floors rely on air bricks to ventilate the floor void.
If these vents are blocked, moisture builds up underneath, creating a humid pocket that releases a musty smell through floorboards.
3️⃣ Condensation and Poor Airflow
After rainfall, humidity levels rise indoors.
If your home lacks mechanical ventilation, condensation can settle on cooler surfaces — especially in corners, behind furniture, or along external walls — leading to damp smells and mould.
🧰 How Weather Wise Fixes Musty Smells and Damp Odours
At Weather Wise Solutions Limited, we take a diagnostic approach before any work begins:
✅ Moisture testing & mapping – to identify whether the issue is rising, penetrating, or condensation-based.
✅ Checking subfloor ventilation – inspecting and unblocking air bricks to restore airflow.
✅ Installing PIV or DMEV systems – introducing balanced, filtered air throughout the home.
✅ Inspecting ground levels & drainage – ensuring rainwater doesn’t pool against external walls.
✅ Treating affected areas – removing salts, re-plastering if necessary, and applying breathable finishes.
All systems we install are sourced from trusted suppliers like PAM Ties and Wycamol ensuring durable, professional-grade solutions.
🏠 Why You Shouldn’t Ignore a Musty Smell
That smell is often the first warning of hidden moisture.
If left untreated, it can lead to:
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Mould growth on walls or skirting
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Wet rot in timber floors or joists
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Damaged plaster or bubbling paint
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Poor indoor air quality and health issues
By addressing the cause early, you protect your property’s structure and value — and keep your home feeling clean and comfortable.
🏡 Why Wigan Homeowners Choose Weather Wise
As a family-run damp and ventilation company, we don’t guess — we diagnose.
We’re proud members of the Federation of Damp, the Damp Proofing Association and Trust A Trader
Our CPD-qualified specialists provide insurance-backed guarantees on approved works and help Wigan homeowners solve the root cause of damp, not just the symptoms.
👉 Book your free damp and ventilation assessment in Wigan:
https://weatherwiseuk.co.uk/pages/contact