Release no. 11 - 2010 To NASDAQ OMX Nordic Exchange Copenhagen A/S This is a translation of the Danish version. Only the Danish version is legally binding. ROCKWOOL INTERNATIONAL A/S Hovedgaden 584, Entrance C DK2640 Hedehusene Phone: +45 4656 0300 www.rockwool.com Danish CVR no: 54879415 6 July 2010 The Rockwool Group acquires Asian stone wool based insulation business from Australian company CSR Ltd. * The Rockwool Group enters into agreement to acquire CSR's Asian stone wool insulation business for AUD 128 million. * Provides the Rockwool Group with the opportunity to further expand upon its existing platform in South East Asia and establish a bridgehead in China. * The transaction enables CSR to focus on further strengthening its leading position in the building products markets in Australia and New Zealand. The Rockwool Group today announced it has entered into an agreement to acquire the Asian stone wool insulation business from Australian company CSR Ltd. Under the agreement, the Rockwool Group will acquire 100% of CSR's insulation, panels and trading businesses across the Asian region for a consideration of AUD 128 million. CSR's insulation business operates three mineral wool factories located in China, Malaysia and Thailand. CSR also owns and operates a sandwich panel plant at the premises of its insulation plant in China. Additional to the activities in China, Malaysia and Thailand, the CSR insulation business includes representation offices in the Philippines, Vietnam and Singapore. The acquired businesses complement very well the existing Rockwool business in Asia centred in Malaysia. CEO of the Rockwool Group, Eelco van Heel, said the opportunity of acquiring CSR's stone wool based insulation business in the region enables the Group to put further weight behind its growth strategy for the region by establishing a strong foothold in the Chinese market. “This is a major leap forward for the Rockwool Group in Asia. CSR's insulation business in the region is a well performing and well managed business which will fit perfectly into the Rockwool business scope.” “The market for stone wool insulation in the region is still small and mainly supported by requirements coming from foreign investments in infrastructure and buildings. We expect local regulations and construction habits to progress with higher requirements for energy efficient buildings and a demand for a high performing, sustainable and safe insulation material such as stone wool. We believe that competencies in the acquired CSR businesses combined with Rockwool expertise will, during the next decade, enable us to establish a strong market position” said CEO Eelco van Heel. Commenting on the transaction, CSR Building Products, CEO, Rob Sindel, said the transaction was in line with CSR's strategic focus on the Australian/New Zealand building products markets. “While we have operated successfully in Asia for over 25 years, our core geographic focus remains on Australia/New Zealand where we have strong market positions and brand leadership.” “We believe it is now appropriate to focus our strategic agenda on these markets, whilst providing the Asian businesses and organisation the opportunity to develop further under a different ownership structure.” The transaction is expected to be completed over the next six months following which ownership of the business will transfer to the Rockwool Group. Further information: Henrik Frank Nielsen, Division Managing Director and Gilles Maria, CFO Rockwool International A/S +45 46 56 03 00 A press and investor conference call will be held at 10:00 CEDT with participation of CEO of the Rockwool Group, Eelco van Heel, Division Managing Director, Henrik Frank Nielsen and CFO, Gilles Maria. The conference call is also transmitted on our website www.rockwool.com/acquisition where dial-in phone numbers can be found.