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Swimming pool vinyl liner stained

  • Use of algaecide chemicals; that is, chemicals poisonous to algae

    How to repair

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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Staining of walls and/or eaves

Black staining on stained or clear-finished timber weatherboards

  • Mould growth on timber surface; occurs most commonly on south-facing walls

    How to repair

Staining from run-off from cedar or H3.2 treated pine weatherboards

  • Leachate from cedar weatherboards or treatment chemicals 

    How to repair

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 stains on stucco

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

    How to repair

Verandas – water stains on soffit lining

  • Rain blowing under the soffit/leaking roof above/overflowing gutters

    How to repair

Stains on window and door glass

Subfloor – damp stains on underside of flooring

  • Leaking water or waste pipe 

    How to repair

  • Overflow or leak from wet area fixtures such as bath, shower, handbasin, dishwasher, clothes washer, hot water cylinder

    How to repair

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