[1] ISO 12468-1:2003 External exposure of roofs to fire—-Part 1:Test method
[2] ISO 12468-2:2005 External exposure of roofs to fire—Part 2:Classification of roofs
[3] ENV 1187:2002 Test methods for external fire exposure to roofs
[4] EN 13501-5:2005 Fire classification of construction products and building elments—Part 5:Classification using data from external fire exposure to roofs tests