Mold in loft

[Callum halford]

Hi, very new to forums but here we go, me and my partner is in the prosses of purchasing a home, on the survey is said that there is condensation in the roof and there is mold located on the undersid of the vallys I believe. A roofer said it is not a major problem and can be fixed my adding extra tile vents and moving the insulation abit from the edge of the loft I was wondering if this is correct any help would be appreciated

Read more: https://www.diynot.com/diy/threads/mold-in-loft.591529/#ixzz7T0pzOzAo

 

[Callum halford]

Hi, very new to forums but here we go, me and my partner is in the prosses of purchasing a home, on the survey is said that there is condensation in the roof and there is mold located on the undersid of the vallys I believe. A roofer said it is not a major problem and can be fixed my adding extra tile vents and moving the insulation abit from the edge of the loft I was wondering if this is correct any help would be appreciated 😀

 

[Old Salt]

Worked for me, no mould but there was condensation. 4 tile vents, 2 each side and now all is fine.

 

[datarebal]

It looks like it could do with more ventilation.
You have a breathable underlay but that isn't always enough.
Check the depth of the insulation you have .
Check the extractor isn't leaking into the loft and is connected to the outside. If you have soffit or over fascia vents you can pull insulation back from the edges but make sure there is no exposed plasterboard. You just need enough gap between the top of the insulation and your underlay to allow some air flow.
The valley boards look shabby have you a close up ?

 

[pegasus12]

The roofer is right, most mould problems can be solved with more ventilation. We would always install vents before doing more invasive work.