Flat roofs custom copper drop copper k style gutter open cut shingle valley copper box gutter lined with epdm copper w valley ceramic tile slate slate grace roofing under layment tpo open pan valley closed shingle valley owens corning tru def shingles rotted wood replacement roof shingle repaur copper barrel roof rotted wood tpo roof tpo seam nessesary roof cleaning parapat cap over tpo tapered iso safty line shingle repair tpo roofing tpo flashing over ac ducting finished tpo over ac ducting tpo roofing foam roofing wet flat roof insulation tpo wraped up wall