Verdigris - zinc
Can anyone tell me how I can speed up the process of verdigris on zinc to achieve the green patina one sees on aged zinc clad rooftops. Best regards James Foxjames Fox
- london england
James, unfortunately it's gonna take until pigs fly. Verdigris green patina occurs on copper roofs, not on zinc ones, because the green color is a copper salt. Zinc roofs just eventually rust when the galvanizing wears off. Sorry.
Ted Mooney, P.E. RET
Pine Beach, New Jersey
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