Flashings
Showing results 1-12 of 35
Rusting flashings and metal components
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Air-borne salt, dust or dirt accumulating under flashings and metal components
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Zinc (galvanizing) or aluminium/zinc or zinc/aluminiuim alloy coating has been scratched or eroded, exposing steel
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Acidic leachate from cedar or H4-treated timber (containing copper-based preservatives)
No gap between bottom of cladding and waterproof deck
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It was not installed with a sufficient gap when constructed
Gap between bottom of cladding and head flashing sealed
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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
No head flashing to window/door openings
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It was not installed when constructed – for a period during the 1970s and 1980s sealant was sometimes used rather than a metal head flashing
Stain failure at base of timber weatherboard 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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High subfloor moisture levels behind the cladding
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Bottom of cladding is too close to a waterproof deck surface, apron flashing and absorbing moisture
Plywood cladding – paint failure at base of walls
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Cladding covered by soil/foliage
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The back surface of boards 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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High subfloor moisture levels behind the cladding
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Bottom of cladding too close to waterproof deck surface, apron flashing and absorbing moisture
Leaking through stucco
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Cracks in the cladding systems
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Paint or sealant failure
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No cap or saddle flashings at junctions of parapet and balcony walls
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Junctions with other claddings and/or roof poorly detailed/constructed
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Omission of head flashings to doors/windows
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Minimal jamb flange cover of aluminium windows
EIFS – leaking through cladding
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Cracks in the cladding systems
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Paint or sealant failure
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No cap or saddle flashings at junctions of parapet and balcony walls
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Junctions with other claddings and/or roof poorly detailed/constructed
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Omission of head flashings to doors/windows
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Minimal jamb flange cover of aluminium windows
Balustrades and barriers – flat topped plastered framed balustrade wall
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A detail known to result in leaks
Balustrades and barriers – a plastered and painted junction
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A high risk detail known to result in leaks
Profiled metal roofing – rainwater runoff not draining into gutter
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Roofing stops short of gutter
Profiled metal roofing – staining
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Run-off from lead flashings
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Soot or particulate emissions from nearby chimneys or flues
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Discharge onto the roof from a copper pipe, such as that from a hot water cylinder vent or from a pressure relief valve, or from copper piping in solar panels or air conditioning units
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Staining may be evidence of corrosion
