I was just reading the thread on the building of a new coop, and someone said not to bother sloping the nest box roof. I've made mine of an old cupboard & had planned on sloping the roof to avoid roosting (as I've read). Would it suffice if I covered the top in those self stick laminate tiles, while leaving it flat, for easier cleaning? I'm just getting tired & still have to finish covering the run & converting the run from a dog pen. TIA!