Release no. 12 - 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 DK2640 Hedehusene Phone: +45 4656 0300 www.rockwool.com 29 August 2007 Changes of the Board At today's meeting, the Board of Rockwool International A/S has decided to recommend to the Annual General Meeting in April 2008, that Steen Risgaard is elected to the Board of Rockwool International A/S as replacement for Gustav Kähler, who has reached the Board's age limit of 70 year. Steen Risgaard, 56, is President & CEO of Novozymes A/S, a position he has held since Novozymes A/S was demerged from Novo Nordisk A/S in 2000. He furthermore serves on the boards of WWF (World Wildlife Fund) Denmark and Egmont International Holding A/S and is Chairman of EuropaBio. Further information: Chairman of the Board, Tom Kähler.