Black Mould on Windowless En-Suite Bathroom Ceiling and Venting into Loft Space


Postby stuartrobins » Mon Nov 09, 2015 1:53 pm

Hi, I have an en-suite with no windows. There is an extractor fan that vents into the loft space.

I am slowly getting back mould spots on the ceiling. My question is should the extractor be vented to the outside or is the loft space ok? If it is what can I do to stop the mould.

Thanks

Stuart
stuartrobins
Rank: Labourer
Progress to next rank:
0%
Posts: 1
Joined: Mon Nov 09, 2015 1:48 pm

Sponsor

Simply Build It

Postby thedoctor » Mon Nov 09, 2015 6:28 pm

Hi Stuart

The main cause of black spot mould in this situation is lack of ventilation and air flow but if you don’t have any windows, it can be hard to achieve a decent amount of air flow to prevent condensation buildup and the resulting black mould.

It may be that you need a slightly more powerful extractor fan to remove more of the moist air.

In terms of venting in the loft space - it should really vent externally as all you are doing is pumping the hot, moist air into the loft void and this in turn can bring its own issues.

We do have a project on damp and condensation that may be of some more use to you: http://www.diydoctor.org.uk/projects/condensation.htm

Hope this helps!
thedoctor
Posts: 2461
Joined: Sat Apr 08, 2006 12:15 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics