Field glossaryGalvalumeAn aluminum-zinc alloy coating on steel, roughly 55 percent aluminum, for corrosion resistanceUsed across 2 Anvilfield field guides, most in Roofing. Where this shows upRoofingMetal roof types comparedRoofingStanding seam metal roof Related termsSnap-lock vs mechanical seamStanding seamExposed / through-fastener panel Back to the full field glossary