Release no. 3 - 2009 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 17 April 2009 The Rockwool Group intends to close its factory in Italy The Rockwool Group has the intention to close the Italian factory in Iglesias on the island of Sardinia, Italy. The factory which is one of the smallest in the Group has an annual production capacity of approx. 30,000 tonnes of stone wool and employs 80 people. It was purchased by the Rockwool Group in 1999 but has been operating with a loss in all years except 2007 where a break even was reached. As soon as possible, the Rockwool Group will start consultation with employee representatives in order to determine the measures for reducing the social impact of the factory closure. Further information: Thorkild Diness Jensen Director, Group Branding & Communications Rockwool International A/S +45 46 56 03 00