also: ガルバニウム
noun
Galvalume; Galvanium
Trademarked steel product with an aluminum-zinc alloy coating, used in construction and roofing. The term is a proper noun in Japanese, often written in katakana.
この工場ではガルバリウム鋼板を製造しています。
This factory produces Galvalume steel sheets.
屋
Using Galvalume for roofing material increases durability.