pros and cons of single-ply membrane commercial roofing | commercial roofing contractor, cleveland ohio. i was in a roof contractor\u0027s office earlier today and he asked me to ball-park a metal roof for him. buy siding siding options material types pros u cons our partners where to buy metal roofing . metal roof pergola 73 with metal roof pergola. red metal roof 16 with red metal roof. metal flashings on a dutch gable northcote. a look at the inside from what we call the patio view from the perch the girls have a great view of all the activity in our yard and the neighbors yard.