Hello, I am looking for some advice and ideas on how to put something, possibly 120mm wide decking planks on a flat felt roof, its the type of roof that is made of tar and grit that is melted on when installing, it was installed in 2015, so not too old.   The reason is my cats have been burning their feet when walking across it in all the hot weather we have had recently and it is impossible to stop them, they can get to it easily from the walls running next to it and the neighbors gar