metal roofing going on a pole-built building. stucco sides and metal roof: doing the exterior of the fling, part 1. decra metal roofing products. before i get too far ahead i want to mention the roof metal. 12×20 lofted barn cabin w/metal roof. copperfx3jpg2211x1474 284 mb. image of: modern steel roof trusses for sale designs ideas.