Lead-based paint
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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
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
Timber trims – chalking paint
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Weathering, UV light exposure – chalking will be more visible with darker colours
Timber trims – fading paint
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Weathering UV light exposure – darker colours are more prone to fading
Timber trims – 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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Coating is at the end of its serviceable life
Timber trims – 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
-
Surface was damp or dirty when painted previously
-
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
Verandas – timber paint/stain failure
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UV exposure; timber movement
Timber and steel windows – paint failure: peeling/flaking
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Thermal expansion and contraction of the frame
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Loss of adhesion due to excess moisture in frame
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Poor initial substrate preparation
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water-based enamel paint applied over water-based (acrylic) paint
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The surface was damp or dirty when painted
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A dark paint colour has been used
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There has been timber swelling/shrinkage caused by moisture absorption into the timber end grain if the joints were inadequately primed before installation