There is mould on the bottom section, both sides, of a bathroom window (see image below). The sealant around the window is not great but I am guessing that’s not the cause as moisture must be getting to that point to get in. Going to try and borrow a ladder to get to the window outside but what is the likely cause and how to fix? I would like to try and be prepared so I can just sort it while I have a ladder.
What could be causing mould around window?
- Thread starter Jamie D
- Start date
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Lack of adequate ventilation .
If there is no extractor fan and the window is kept shut, this is no surprise
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Ventilation is often a problem in bedrooms where you are breathing out moist warm air all night. Happens to us periodically and the Dettol mould spray always sorts it; you don't need much and it vanishes in under an hour.
Its a cold spot with lots of moisture in the room, my guess is there was no cavity closer used when that window was fitted.
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