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Attic insulation dark spots..

  • 26-02-2025 08:42PM
    #1
    me4many
    Registered Users, Registered Users 2 Posts: 299 ✭✭


    Hi folks..

    I've noticed that the top of my attic insulation has turned pretty dark ..over time. It's mostly on one half of the attic ie side facing east..

    Everywhere is bone dry and there loads of air circulation.

    Q: Why might this happen....

    Thanks...



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,779 ✭✭✭10-10-20


    Are you in a town or near a busy road? It can be road-dirt or coal/smoke particles collecting in the wool.



  • #3
    MicktheMan
    Registered Users, Registered Users 2 Posts: 2,954 ✭✭✭MicktheMan


    Your attic insulation fibre is acting as a filter to any air passing through it and the dark colour is the result of particulate air bourne matter getting trapped by the fibres over time.

    Edited to add; nothing to worry about if mainly happening close to the edge of the attic (eaves ventilation)



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