We have a problem with damp spots on the gable end of our house. recently, we decided to have the hall/landing painted & noticed how bad the damp spots are.
I was advised they could be condensation spots? The damp spots start half way up the wall, parallel with upstairs & are spread across the upstairs wall.
We have a drain pipe running across the exterior of the wall. I pur in this pipe because two houses were sharing the same down pipe & the gutters frequently over flowed.
What can be causing these damp spots? I cant see any wall vents along the side of the house (condensation).
Any help appreciated