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No gap between bottom of cladding and waterproof deck

  • It was not installed with a sufficient gap when constructed

    How to repair

There is no gap between the bottom of the cladding and a window/door head flashing (gap should be 5 mm)

  • It was not installed correctly when constructed – the gap has been required under E2/AS1 for building work since 1992 to allow draining and drying from behind the cladding

    How to repair

Gap between bottom of cladding and head flashing sealed

  • It was not installed correctly when constructed – the gap has been required under E2/AS1 for building work since 1992 to allow draining and drying from behind the cladding

    How to repair

No head flashing to window/door openings

  • It was not installed when constructed – for a period during the 1970s and 1980s sealant was sometimes used rather than a metal head flashing 

    How to repair

Painted timber weatherboards – paint failure at base of walls

  • Cladding covered by soil/foliage

    How to repair

  • The back surface of boards is too close to the ground, not sealed and absorbing moisture

    How to repair

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Timber weatherboards – joints opening

  • Thermal expansion and contraction of timber

    How to repair

  • Timber swelling/shrinkage caused by moisture absorption into end grain if joints were not adequately primed before installation and painting or staining

    How to repair

Paint failure at joints and external corners of timber weatherboards

Rot in timber weatherboards

  • Timber is or has been continuously damp

    How to repair

  • Timber was inadequately treated – radiata pine must be treated to H3.1 if painted and H3.2 if installed unpainted or stained

    How to repair

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Leaking through timber weatherboard cladding

Split or cracked timber weatherboards

Stain failure at base of timber weatherboard walls

  • Cladding covered by soil/foliage

    How to repair

  • The back surface of boards is too close to the ground, not sealed and absorbing moisture

    How to repair

  • View all repairs

Leaking through stained or clear-finished timber weatherboards