Showing results 1-12 of 14

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

    How to repair

  • Lack of rain washing. Rain washing tends to be less effective on roofs with less than 15 degrees slope

    How to repair

  • View all repairs

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

    How to repair

  • Roofing material is in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment 

    How to repair

  • View all repairs

Roof space – water pipes leaking

Zinc roofing – white surface corrosion

  • Lack or rainwashing. Rain washing tends to be less effective on roofs with less than 15 degrees slope

    How to repair

  • The roofing material is in contact with, or has run-off from, cedar or redwood, or timber treated with a copper-based preservative treatment 

    How to repair

  • View all repairs

Sheet membrane roofing – seam separation/failure in PVC membrane

External gutters – water does not drain away

Sagging external gutter

Blockages at external gutter outlets or overflows

Deformed external metal gutter

Water runs down fascia instead of into external gutter