CSR limited is engaged in the manufacture and supply of building products in Australia and New Zealand. In Australia, it has an interest in the smelting of aluminium through its 70% interest in Gove Aluminium Finance Limited, which owns 36.05% of the Tomago aluminium smelter. It operates in four segments: Building Products, Glass, Aluminium and Property. Its Building Products segment includes Lightweight Systems and Insulation, and Bricks and Roofing. Its Bricks and Roofing businesses include brands, such as PGH clay bricks and pavers, Monier concrete roof tiles and Wunderlich terracotta roof tiles. The Glass business includes the operations of Viridian, a glass provider and manufacturer of float glass and hardcoated performance products in Australia. Products from the aluminium business include aluminium ingots, billets and slabs. The Property business generates revenue from the sale of former operating sites by advancing the sites through various stages of the development cycle.