Preweathered Zinc is an alloy of electrolytically refined zinc with a 99.995% degree of purity and accurately defined parts of copper and titanium. In a single continuous operation, the raw material is melted, cast and wound onto steel coils.
Preweathered Zinc Sheets come with a protective coating on the back side for additional moisture protection. This coating cannot be removed. Sheets available w/out protective coating upon request.7mm = 24 gauge 8mm = 22 gauge