Release no. 11 - 2007 Report on the first half of 2007 To 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 DK-2640 Hedehusene Phone: +45 4656 0300 www.rockwool.com 29 August 2007 Report on the first half of 2007 for Rockwool International A/S Today the Board of Rockwool International A/S has approved the following report on the first half of 2007. Highlights * Sales in the first half increased by 26% compared to the first half 2006. * EBIT increased by 183 % compared to the first half 2006. * Expectations for sales growth for the year are upgraded to 22%. * Expectations for profit for the year (after minorities' interests) are upgraded by DKK 300 million to around DKK 1,900 million. Further information: Gilles Maria, Chief Financial Officer