Should a rubber roof feel soft when walked on?

Well I've sent him your answers so hopefully he listens. I did as much research as I could on rubber roofs and told him that as far as I can tell, rubber roofs won't be firm like aluminum. Only problem I have with it is there was a mice infestation....mice droppings all around the lower cupboards and on top of the white water tank, but that's entirely a different topic.