Wall framing location is visible

Causes

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

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

Listed under: Interior, finishes, wallpaper, fixtures and fittings, insulation, plaster and fibrous plaster, timber and wood-based, plasterboard, paint, gas, heating, mechanical ventilation, health and safety, timber, framing, linings, walls, moisture, appliances, condensation, mould, mould health and safety

Cause

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

Repair

  • if paint-finished, wash the wall to remove mould/mildew; treat with fungicide before repainting
  • if wallpaper-finished, remove the wallpaper; treat wall with fungicide before re-papering
  • if possible insulate the wall (retrofitting wall insulation requires a building consent); alternatively investigate and address possible causes of high internal moisture levels such as:
    • no mechanical extract ventilation in kitchen/bathroom/laundry - moisture migrates to coldest region of the house
    • use of unflued gas heating raising internal moisture levels
    • regularly drying clothes on racks indoors
    • clothes dryer not vented to the outside
    • heating not or seldom used in the room
  • reduce internal moisture levels, increase heating and increase cleaning frequency when mould forms on framing lines

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Cause

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

Repair

  • if paint-finished, wash the wall to remove mould/mildew; treat with fungicide before repainting
  • if wallpaper-finished, remove the wallpaper; treat wall with fungicide before re-papering
  • if possible insulate the wall (retrofitting wall insulation requires a building consent); alternatively investigate and address possible causes of high internal moisture levels such as:
    • no mechanical extract ventilation in kitchen/bathroom/laundry - moisture migrates to coldest region of the house
    • use of unflued gas heating raising internal moisture levels
    • regularly drying clothes on racks indoors
    • clothes dryer not vented to the outside
    • heating not or seldom used in the room
  • reduce internal moisture levels, increase heating and increase cleaning frequency when mould forms on framing lines

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