The metal roofs over the alley dormers are rusted. The edges of the roofs were rusted so that they no longer were long enough to cover the crown moulding on the sides of the dormers. We added flashing under the metal roofs to direct water over the crown mouldings. If this flashing was not added, the newly replaced mouldings would have failed, and there would be a good chance of water infiltration. The metal roofing needs to be replaced in the near future.