Translucent sheets
Showing results 1-12 of 13
Rust on zinc/aluminium or aluminium/zinc alloy-coated steel roofing
-
Erosion of or scratching damage to the zinc/aluminium or aluminium/zinc alloy coating, exposing the steel
-
Lack of rain washing. Rain washing tends to be less effective on roofs with less than 15 degrees slope
-
Roofing metal is in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment
-
Roofing has run-off from translucent (PVC) sheeting
-
Corrosion of the steel in a corrosive environment such as near a swimming pool, or in coastal, industrial or geothermal regions
-
Inadequately primed end and/or side laps
-
Use of lead flashings
-
The roofing is near the end of its serviceable life
Rust on alloy-coated pre-finished steel roofing
-
Paint failure and subsequent erosion of or scratching damage to the zinc/aluminium or aluminium/zinc alloy coating, exposing the steel
-
Roofing material is in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment
-
The roofing has run-off from translucent (PVC) sheeting
-
The roofing is near the end of its serviceable life
Zinc roofing – white surface corrosion
-
Lack or rainwashing. Rain washing tends to be less effective on roofs with less than 15 degrees slope
-
The roofing material is in contact with, or has run-off from, cedar or redwood, or timber treated with a copper-based preservative treatment
-
The roofing has run-off from translucent (PVC) sheeting
Translucent sheet roofing – cracked sheets
-
Impact damage or weight on sheets
-
Fixings are too tight
-
There are insufficient expansion and contraction allowances at fixing points
Translucent sheet roofing – impact damage
-
Hail, high winds
-
Attempting to walk on the roof
-
Weathering resulting in a loss of impact resistance
Translucent sheet roofing – loss of transparency
-
UV (sunshine)
-
Insufficient rain washing resulting in deterioration of UV-resistant coating
Translucent sheet roofing – surface deterioration or crazing
-
UV light
-
Build-up of dirt
-
The material is at the end of its serviceable life
Translucent sheet roofing – loose sheets
-
Sheet spans are too large
-
There are insufficient fixings
-
There are loose or missing fixings
Translucent sheet roofing – damaged fixing seals
-
Deterioration due to age
-
Sheet movement due to wind causing the fixings to become loose
Translucent sheet roofing – sheet discolouration
-
Heat trapped by the roofing causing the purlins to which sheets are fixed to overheat and damage the sheets
Translucent sheet roofing – dirt trapped in the sheets
-
Sheet ends were inadequately sealed
-
Capping has fallen off or was not installed
Corrosion: red rust on galvanised mild steel cladding
-
Galvanised coating has eroded to expose bare metal
-
Profiled metal cladding is in contact with or has run-off from cedar or redwood, or timber treated with copper-based preservative treatment
-
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
-
Damage to the galvanised coating during fixing exposing steel
-
Exposure to a corrosive environment such as a swimming pool, or in coastal, industrial or geothermal areas
-
Inadequately primed end and/or side laps
-
Cladding in ground contact
-
Insufficient rain washing
