Ceiling condensation / loft eaves

KBD

Joined
11 Oct 2024
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United Kingdom
Hi, I'd appreciate any advice on this one (affected areas filmed in the below video)

- Semi detached house
- When the cold weather sets in, condensation beads form on the front bedroom ceiling. As the ceiling curves down in the direction of the wall, the condensation runs off and stains the wallpaper (below video)
- I've tested the ceiling temperature with a Bosch Universal Temp measurer, it drops from 14/15 degrees in the centre of the room to about 10/11 the closer you get to the window (though I'd expect it to be colder with the window being there / exposed to the elements)
- The loft space directly above (shown on the video at 34 seconds in) was converted about 30 years ago and has eaves storage. The eaves space is mostly empty, tricky to access but not impossible.
- As seen in the video, insulation was pushed down into the eaves space approx. six years ago (I'm told this was done when the 'Beast from the East' storm hit the UK).

From reading around it looks like pushing the insulation down may have done more harm than good and interrupted the airflow and ventilation? I'm most likely going to get someone in to look at it rather than attempt a fix myself, but wanted to get a better understanding of the problem first + thoughts of those with more experience!

Thanks

 
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Are the rafters dry higher up? Do you have ventilation in the loft conversion.
 
No obvious signs of the rafters being damp higher up. The only ventilation is a window on the side of the loft, no vents etc.

Thanks
 

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