Why does mould return after cleaning?
Removing visible growth does not prevent recurrence unless moisture is controlled.
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Condensation and mould
Moisture in indoor air can condense on cold surfaces, particularly where insulation or air movement is poor. Leaks must still be ruled out.
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Questions answered in this section
Why is mould worst behind wardrobes?
Restricted air movement against a cold exterior wall can raise surface humidity.
Read guide →Why is one bedroom damp in winter?
Occupancy moisture, heating patterns and insulation gaps can combine.
Read guide →Can new double glazing make mould worse?
Improved airtightness may reduce accidental ventilation without adequate planned extraction.
Read guide →Why do I get condensation on cold walls?
Surface temperature and indoor vapour levels are more informative than the wall feeling wet.
Read guide →Can a dehumidifier cure mould?
A dehumidifier can reduce airborne moisture but will not repair rainwater or plumbing leaks.
Read guide →Can mould grow behind wallpaper?
Trapped moisture and cold surfaces may allow concealed growth.
Read guide →Why is a north-facing room mouldy?
Lower solar gain and cold wall surfaces can encourage condensation under certain conditions.
Read guide →Do trickle vents reduce condensation?
Background ventilation can help when correctly installed and used alongside extraction and heating.
Read guide →Why does the bathroom stay wet all day?
Check extractor performance, run-on time, heating and persistent leaks.
Read guide →Can too much insulation cause condensation?
Design errors and cold bridges matter more than insulation quantity alone.
Read guide →Why does mould appear around the skirting?
Investigate cold bridges, condensation and low-level water entry before diagnosing rising damp.
Read guide →Can indoor clothes drying cause mould?
Moisture from laundry needs adequate extraction or ventilation.
Read guide →What humidity should a UK home have?
Monitor trends and condensation rather than treating a single meter reading as proof.
Read guide →Can mould grow in a ventilated house?
Air movement alone may not overcome cold surfaces or active moisture sources.
Read guide →Why are windows wet inside every morning?
Identify room-side droplets, sealed-unit condensation and rain leaks as separate issues.
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