Release no. 25 - 2008 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 DK-2640 Hedehusene Phone: +45 4656 0300 www.rockwool.com 18 December 2008 Financial calendar for 2009 Rockwool International A/S expects the presentation of accounts, investor meetings with web casts, and the general meeting to take place on the following dates: Silence period before Q4 19 February - 12 March 2009 Annual Report for 2008 12 March 2009 Investors' meeting with audio transmission on the internet 12 March 2009 Investors' meeting with video transmission on the internet 13 March 2009 Annual general meeting 22 April 2009 Silence period before Q1 4 May - 25 May 2009 Report on the 1st quarter of 2009 25 May 2009 Investors' meeting with audio transmission on the internet 25 May 2009 Silence period before Q2 6 August - 27 August 2009 Report on the 1st half-year of 2009 27 August 2009 Investors' meeting with audio transmission on the internet 27 August 2009 Investors' meeting with video transmission on the internet 28 August 2009 Silence period before Q3 29 October - 19 November 2009 Report on the 1st-3rd quarter of 2009 19 November 2009 Investors' meeting with audio transmission on the internet 19 November 2009 Further information: Thorkild Diness Jensen Vice President, Group Communications Rockwool International A/S +45 46 56 03 00