Paint
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Swimming pool – concrete wall cracking/deterioration
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Soil subsidence under/against pool
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Poor design or installation
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Changes in soil moisture or groundwater levels
Swimming pool paint failure
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Age, lack of maintenance
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Paint unsuitable for use
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Coating poorly applied
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Water getting behind the paint finish of inadequately applied coating
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Incorrect chemical treatment of water and pH level
Painted timber weatherboards – paint chalking
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Weathering, UV light exposure – chalking will be more visible with darker colours
Painted timber weatherboards – faded paint finish
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Weathering, UV light exposure – darker colours are more prone to fading
Painted timber weatherboards – peeling or flaking paint
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Thermal expansion and contraction of timber substrates
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Loss of adhesion due to excess moisture in substrate
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Poor initial substrate preparation
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Oil-based (alkyd) paint applied over water-based (acrylic) paint
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Surface was damp or dirty when painted previously
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Dark colours
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Timber swelling/shrinkage caused by moisture absorption into timber end grain if joints were not adequately primed before installation
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Paint coating is not thick enough on sharp board corners
Painted timber weatherboards – bubbling or blistering of paint
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Loss of adhesion due to excess moisture in substrate
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Poor initial substrate preparation
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Oil-based (alkyd) paint applied over water-based (latex) paint
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Surface was damp or dirty when painted previously
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Dark colours increasing surface temperatures
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Timber swelling/shrinkage caused by moisture absorption into timber end grain if joints were not adequately primed before installation
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Water-based paint coat exposed to moisture before paint has fully dried
Painted timber weatherboards – paint failure at base of walls
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Cladding covered by soil/foliage
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The back surface of boards is too close to the ground, not sealed and absorbing moisture
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Concrete has been placed up to and against cladding
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There are high sub-floor moisture levels behind the cladding
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The bottom of the cladding is too close to a waterproof deck surface, apron flashing and absorbing moisture
Timber weatherboards – joints opening
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Thermal expansion and contraction of timber
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Timber swelling/shrinkage caused by moisture absorption into end grain if joints were not adequately primed before installation and painting or staining
Paint failure at joints and external corners of timber weatherboards
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Moisture getting into the timber end grain
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The cut ends of boards were not primed or sealed before installation
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The timber has shrunk after installing causing joints to open
Cupping of timber weatherboards
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Thermal expansion and contraction of timber
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Swelling/shrinkage due to moisture absorption
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Insufficient gap left between rusticated or rebated weatherboards during installation
Rot in timber weatherboards
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Timber is or has been continuously damp
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Timber was inadequately treated – radiata pine must be treated to H3.1 if painted and H3.2 if installed unpainted or stained
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Non-durable or untreated timber was used – timbers such as cedar and heart macrocarpa may be untreated but they must not be continuously wet in use
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Paint coating has failed
Rot at base of timber weatherboard walls
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Boards are covered by soil or foliage
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Boards have had concrete poured against them or are touching the ground
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Boards were not primed and painted along the bottom edge