The contractor shall perform the complete remediation and preventative sealing of all standing seams, flat-lock seams, and associated flashing joints on the copper roof. The primary objective is to cr... The contractor shall perform the complete remediation and preventative sealing of all standing seams, flat-lock seams, and associated flashing joints on the copper roof. The primary objective is to create a long-term, watertight system by removing failed materials and installing a high-performance, flexible sealant that is fully compatible with copper. All work shall be performed in accordance with the highest industry standards.