UK damp and condensation guide
How to clean mould off window frames safely
Cleaning visible mould helps, but controlling moisture is what reduces repeat growth.
UK guide
Mould on window frames spreads if treated only at the surface
Black mould on frames returns fast if the room humidity stays high. Clean the mould and reduce moisture at the same time.
Safe cleaning steps
Use gloves, ventilate the room, apply mould cleaner carefully, and wipe with disposable cloths.
Reduce recurrence
Dry frames daily during heavy condensation periods and improve airflow around windows.
When to escalate
If mould keeps returning heavily, review humidity levels, ventilation, insulation, and hidden damp sources.
Related DampHomeFix pages
Useful next reads: running cost calculator, placement guide, and ideal humidity levels.
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