Roosdaal is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Borchtlombeek, On…Roosdaal is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Borchtlombeek, Onze-Lieve-Vrouw-Lombeek, Pamel and Strijtem. It is also situated in the Pajottenland.