Release no. 9 - 2007 Report on the first quarter of 2007 To the Copenhagen Stock Exchange This is a translation of the Danish version. Only the Danish version is legally binding. ROCKWOOL INTERNATIONAL A/S Hovedgaden 584, Entrance C DK 2640 Hedehusene Phone: +45 4656 0300 www.rockwool.com 22 May 2007 Report on the first quarter of 2007 for Rockwool International A/S Today the Board of Rockwool International A/S has approved the following report on the first quarter of 2007. Highlights - Sales in the first quarter increased by 31% compared to the first quarter 2006. - EBIT nearly trippled to DKK 615 million from DKK 214 million in the first quarter 2006. - A new production line will be built at the factory in Wern Tarw in Wales. Furthermore, a new factory will be established in the Ukraine. - Compared to the expectations for the year announced in the annual report for 2006, sales are now expected to increase by 16% instead of 12%, and the expected profit after minorities' interests is adjusted upwards to around DKK 1,600 million from the previous expectation of DKK 1,200 million. Investment expenditure is adjusted downwards to DKK 1,700 million from the previous expectation of DKK 2,000 million. - The board has approved share options of 105,000 shares to be issued to senior officers in the Group. Further information: Knud Jørning, Chief Financial Officer