Mouldy bathroom ceiling

Joined
5 Mar 2013
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Location
Bedfordshire
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United Kingdom
Hi All,

My bathroom ceiling in our new house has gone mouldy pretty quick due to their being a fan in the ceiling i think. Im assuming MR plasterboard wasnt used. Can someone let me know how to sort this problem. Ive looked at Zinsser stain block but do i need to paint that on first then use another paint on top?

Thanks

Lee
 
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Have you tried bleach and water first?

have you go a window in said bathroom? If so, open whilst or after you’ve showered/bathed.

usually black spots are poor ventilation.
 
due to their being a fan in the ceiling i think

Do you use the fan? The fan will reduce moisture and mould, not increase it.

Mouldy bathrooms are caused by a combination of damp and cold. Improve insulation the ceiling, put in a new fan, change the ducting if old and clogged up, check the outlet is not blocked up, and make sure it is heated in winter. If there is no insulation in the external walls, this will be enough to also cause mould along the ceiling by the wall - but not all over the ceiling.

If it is really bad, worth checking there is not something dripped above.

MR plasterboard won't stop the ceiling getting damp
 
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Fan is either not used enough or not efficient enough as it prevents spores settling . Mould likes still, damp air .
 

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