Datasheet
Galvanised gutters - CRD Technical Bulletin
Galvanic corrosion is an electrochemical process in which one metal corrodes when it comes into contact with another metal that is of dissimilar type. The corrosion is caused by a self-induced current created when the two dissimilar metals are in contact in the presence of an electrolyte such as fresh potable water (a weak electrolyte) and this can become stronger if the roof is within close proximity of the marine environment and salt deposits on the roof dissolve into the water.
This Technical Bulletin is authored by Gavin Ebrington, Queensland State Manager, CRD Building Consultants & Engineers.