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Sliding doors won't fully open
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There is an obstruction preventing them from opening
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For older units, there is wear on the rollers or track
Rust on zinc/aluminium or aluminium/zinc alloy-coated steel roofing
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Erosion of or scratching damage to the zinc/aluminium or aluminium/zinc alloy coating, exposing the steel
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Lack of rain washing. Rain washing tends to be less effective on roofs with less than 15 degrees slope
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Roofing metal is in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment
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Roofing has run-off from translucent (PVC) sheeting
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Corrosion of the steel in a corrosive environment such as near a swimming pool, or in coastal, industrial or geothermal regions
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Inadequately primed end and/or side laps
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Use of lead flashings
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The roofing is near the end of its serviceable life
Rust on alloy-coated pre-finished steel roofing
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Paint failure and subsequent erosion of or scratching damage to the zinc/aluminium or aluminium/zinc alloy coating, exposing the steel
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Roofing material is in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment
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The roofing has run-off from translucent (PVC) sheeting
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The roofing is near the end of its serviceable life
Corrosion: red rust on galvanised mild steel cladding
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Galvanised coating has eroded to expose bare metal
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Profiled metal cladding is in contact with or has run-off from cedar or redwood, or timber treated with copper-based preservative treatment
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Galvanised mild steel cladding has run-off from translucent sheeting (PVC), glass, pre-painted roofing, glazed tiles, unpainted zinc/aluminium alloy-coated mild steel or aluminium
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Damage to the galvanised coating during fixing exposing steel
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Exposure to a corrosive environment such as a swimming pool, or in coastal, industrial or geothermal areas
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Inadequately primed end and/or side laps
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Cladding in ground contact
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Insufficient rain washing
Red rust on zinc/aluminium or aluminium/zinc alloy-coated steel
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Corrosion of the steel when zinc/aluminium alloy coating has eroded to expose the steel
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Cladding material in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment
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Cladding has run-off from translucent (PVC) sheeting
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Corrosion of the steel in a highly corrosive environment such as a swimming pool, or in coastal, industrial or geothermal regions
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For factory coated material, wrong coating specification for the in-use conditions
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Inadequately primed end and/or side laps
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Cladding in ground contact
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Insufficient rain washing
Windows – opening sashes don't open freely
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The sash is out of square due to building settlement
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Broken double hung sash cords
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A timber sash is loose or rotten
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Corroded hinges
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Worn stays to aluminium or PVC windows
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Sash too heavy for stays
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Paint build up around painted frames
Windows – draughts
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Deteriorated seals to aluminium joinery
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Gaps around timber doors and window sashes
Windows – leaks
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Putty has failed (cracked, fallen out) - timber windows
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Glazing rebate not sealed when glass installed
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Glazing beads (rubbers) have shrunk, fallen out – aluminium doors and windows
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Insufficient flange cover at jambs - aluminium doors and windows
Aluminium, timber or PVC sliding window – sticks/difficult to open
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Rollers (wheels) worn or damaged
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Roller track damaged
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Rollers need cleaning and/or lubricating
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Obstruction on the track
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Wheels need adjustment
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Sagging lintel
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Building has settled
