Rondo is an equal joint venture between Boral and CSR, two of Australia's leading businesses in the building and construction industry.

Boral Limited is a building and construction materials supplier in Australia, and has significant operations in the USA and Asia. Boral produces and distributes a broad range of construction materials, including quarry products, cement, flyash, pre-mix concrete and asphalt; and building products, including clay bricks and pavers, clay and concrete roof tiles, concrete masonry products, plasterboard, windows and timber.

CSR is a manufacturing company with operations throughout Australia as well as in Asia and New Zealand. CSR manufactures and supplies a wide range of building products including Gyprock™ plasterboard, Cemintel™ fibre cement, PGH™ bricks, Monier™ rooftiles and Bradford™ insulation. CSR has also recently announced a new name in glass, it’s Viridian™.