| 1940 |
During World War 2, bitumen paint-protected iron cladding was used in the UK |
| 1954 |
Lou Fisher observed the bitumen coating process. |
| 1957 |
The first Fisher tile was manufactured in Auckland. (The world's first Steel Roof Tile) |
| 1964 |
10-Pan Harvey tile was developed. |
| 1967 |
Decra interlocking profile developed. |
| 1960-70 |
Stone chips refined; overglaze added. |
| 1970's |
Exports to Europe, licensed manufacture in Belgium 1979 and Denmark in 1981. |
| 1980 |
Acrylic coatings introduced, improving durability. |
| 1980's |
Exports to Asia, licensed manufacture in Malaysia 1985. |
| 1989 |
Gerard operations (outside USA) purchased. |
| 1989 |
USA plant established - Corona, California |
| 1981-94 |
Export Offices in Canada 1981,. Australia 1989, Central Europe 1991, Arabian Gulf 1993, Japan 1994, Hong Kong 1998, Turkey 1999, Slovenia 2000, Poland 2001, France 2004. |
| 1995 |
Zincalume® Steel Substrate replaces galvanized steel, further extending product life. |
| 1988 |
Purchased by Tasman Building Products, renamed AHI Roofing. |
| 2003 |
Purchased by Fletcher Building. |
| 2005 |
Purchased Plant of former Licensee in Malaysia. |