Isola has two factories in this area where bitumen-based products and steel roofing tiles are manufactured.

(The world's first steel roof tile)

Tuffcoat, ColourTile or Coronashake steel roof tiles.

Today AHI Roofing does business in over eighty countries worldwide in steel roof tiles.

The garage was most often constructed with wood framing, Lustron panel siding, and Lustron steel roof tiles.

Businesses in the Light Building Products division manufacture building materials, such as GIB plasterboard, Pink Batts insulation, aluminium windows, doors and sinkware and steel roof tiles.

It has interests in steel, concrete, plasterboard, panel products, insulation and aluminium extrusion, and is the world's biggest producer of steel roof tiles and laminates as well as the biggest producer of insulation products in Australia and New Zealand.