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Swimming pool – concrete wall cracking/deterioration

Rust stains on concrete/concrete block foundation walls

  • Poor quality concrete absorbing water that rusts the reinforcing, which in turns causes the concrete to spall or crack, allowing in more water 

    How to repair

  • The reinforcing was installed too close to the outer surface of the concrete

    How to repair

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Rusting flashings and metal components

  • Air-borne salt, dust or dirt accumulating under flashings and metal components

    How to repair

  • Zinc (galvanizing) or aluminium/zinc or zinc/aluminiuim alloy coating has been scratched or eroded, exposing steel

    How to repair

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Rusty nail fixings on exterior walls

  • Heads of fixings are not protected by putty where punched and stopped 

    How to repair

  • Incorrect fixing type used for environmental conditions, cladding type or finish 

    How to repair

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Staining around nail holes in timber weatherboards

  • Rust staining from mild steel or hot-dip galvanised nails 

    How to repair

  • Staining from hot-dip galvanised, copper or aluminium nails in cedar (typically a teardrop-shaped stain)

    How to repair

Plywood cladding – staining around nail holes

  • Rust staining from mild steel or hot-dip galvanised nails 

    How to repair

Rust spotting on texture-coated fibre-cement cladding

  • Corrosion of fasteners where incorrect fasteners were used or the galvanised coating has been damaged during fixing 

    How to repair

Rust spotting on asbestos-cement cladding

  • Corrosion of fasteners where incorrect fastener used or galvanised coating has been damaged during fixing 

    How to repair

Rust stains on stucco

  • Hairline cracking in the stucco admitting moisture causing corrosion of the reinforcing mesh 

    How to repair

Timber slat decks – rusty connectors/fixings/support brackets

  • Exposure to air-borne salt, dust or dirt; trapped moisture and dirt

    How to repair

Steel deck beams – rusting

  • Exposure to air-borne salt, dust or dirt; trapped moisture and dirt

    How to repair

Steel deck posts – rusting