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Damp spots gable end attic wall

  • 28-10-2023 9:29am
    #1
    Registered Users, Registered Users 2 Posts: 2,385 ✭✭✭


    Hi. Semi detached house. I was up in the attic and I noticed that an area of the gable end exposed wall is mouldy and looks to have damp drops on it.

    Sand and cement render on the outside that looks intact but might have a slight crack... hard to see.

    Roof looks OK from the inside.

    Is this a matter of just needing more ventilation in the attic maybe or could water be penetrating from the outside?



Comments

  • Registered Users, Registered Users 2 Posts: 2,045 ✭✭✭Cerco


    If there is a chimney over the gable then it is probably due to lead flashing movement. It may need to be dressed and sealed or replaced. This is a common problem.



  • Registered Users, Registered Users 2 Posts: 23,469 ✭✭✭✭mickdw


    What is the wall make up?

    Double wall blockwork or hollow block?



  • Registered Users, Registered Users 2 Posts: 2,385 ✭✭✭RebelButtMunch


    Hollow block



  • Registered Users, Registered Users 2 Posts: 2,385 ✭✭✭RebelButtMunch


    Thanks. No chimney on that side



  • Registered Users, Registered Users 2 Posts: 23,469 ✭✭✭✭mickdw


    Ya with hollowblock, you are strongly relying on external render so I'd have a look around Externally at all areas above the damp spot.



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