Zinc roofing
Showing results 1-7 of 7
Corrosion of roofing downstream from copper vent
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Dissimilar metal corrosion due to water flowing from copper vent onto an incompatible roofing metal
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Vent pipe not PVC sleeved
Zinc roofing – white surface corrosion
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Lack or rainwashing. Rain washing tends to be less effective on roofs with less than 15 degrees slope
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The 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
Zinc roofing – buckling
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Thermal movement in the roofing is not being accommodated by the fixing system
Zinc roofing – bent seams or joints
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Foot traffic on the roof
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The panels were damaged when installed
Zinc roofing – dents/impact damage
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Stones, balls, or foot traffic on roof
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The sheets were damaged during installation
Zinc roofing – uneven colour
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Some parts of the roof area are more exposed to the weather or rainwashing, which slows the development of the traditional zinc oxide on the surface
Zinc roofing – holes
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Condensation is forming on the back of the zinc panels – pure water is very damaging to zinc
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Corrosion is initiated through the use of the wrong fixings
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The zinc is not isolated from the plywood substrate
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CCA (copper-based) treated plywood has been used
