Why Mould Spray Isn’t Enough — Especially in Derby Homes
If you’re living in Derby and battling black mould in your bathroom, bedroom or kitchen, you’re not alone. Mould is a common problem — and the first solution most people try is a supermarket mould spray.
But is it actually doing anything beyond masking the issue?
This blog breaks down the difference between temporary fixes and professional mould control, and why proper treatment is about solving the cause — not just cleaning the surface.
The Truth About Mould Sprays
Mould sprays may:
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Kill visible surface mould (temporarily)
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Lighten black patches on paint or sealant
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Mask odours with fragrance
But they don’t stop:
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The root moisture problem (usually condensation)
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Mould spores in the air
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Mould reappearing after a few weeks
Most sprays contain biocides or bleach, which can discolour the surface without penetrating the material. They also don’t treat behind paint or under wallpaper — which is where the spores are often embedded.
The Proper Way to Treat Mould in Your Home
At Weather Wise, our approach is focused on long-term solutions, not just cleaning the wall.
We offer:
✅ Safe, professional mould removal with low-toxicity treatments
✅ Ventilation upgrades using DMEV fans or PIV systems
✅ Salt-inhibiting plaster repair if walls are contaminated
✅ Airflow advice tailored to Derby property types
✅ Certified specialists (not salespeople)
We’re fully qualified to diagnose why mould is forming in the first place and ensure it doesn’t come back.
Why It's Such a Problem in Derby
Derby has a high proportion of:
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Older housing stock with solid walls
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Properties with sealed windows and no trickle vents
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Converted homes and small flats with limited airflow
This makes it one of the worst regions for condensation-based mould in the Midlands.
What Is DMEV and How Does It Help?
DMEV (Decentralised Mechanical Extract Ventilation) fans are installed in bathrooms, kitchens or utilities. They run continuously at a low level and boost when needed (e.g. during a shower), safely removing moisture before it can settle and cause mould.
🛠️ Quiet, energy-efficient
🛁 Ideal for bathrooms and kitchens
📏 Fully compliant with Building Regulations Part F
🏡 Prevents condensation and protects your home long-term
What We Recommend for Derby Homeowners
Instead of wiping away mould and hoping for the best, we recommend a full moisture and airflow assessment, followed by:
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Safe treatment of any mould present
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DMEV installation in wet rooms
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PIV installation (optional) for whole-house airflow
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Trickle vent advice
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Room-specific heating and airflow tips
We’re Local. We’re Qualified. We’re Not Here to Sell You a Spray.
✅ Members of the Damp Proofing Association
✅ Accredited by the Federation of Damp
✅ Level 3 qualified in damp, condensation and mould
✅ Trusted across Derby for honest, effective advice
Book Your Free Mould & Ventilation Survey in Derby
https://weatherwiseuk.co.uk/pages/contact
Quick FAQs
Is mould spray safe to use around children?
Some sprays contain strong biocides. We use safer, approved products and protective methods during treatment.
Will ventilation really stop the mould?
Yes — if the mould is caused by condensation, proper ventilation is the cure, not just a cleaner.
What if the mould keeps coming back even after cleaning?
That means the source of moisture hasn’t been addressed. That’s where we help.