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Timber board or plywood ceilings – black staining of timber

Wall framing location is visible

  • Condensation forming on the areas between the framing because the wall is not insulated – mould growth is the result of regular condensation

    How to repair

  • Mould is forming on the framing locations because a thermal bridge (framing has lower thermal performance than the insulated part of the wall)

    How to repair

Timber boarding, veneered MDF or plywood – black staining

Windows – reveals water damaged