Description
The U.S. Army Corps of Engineers is seeking a qualified contractor to replace the deteriorated EPDM roofing system on the control station of Lock and Dam 14 on the Mississippi River. The work includes removal of approximately 1,700 sf of existing roof membrane, disposal, repair/reuse of existing sheet‑metal coping, installation of new high‑density recovery board, new 60‑mil EPDM membrane, flashing, scuppers, and a 10‑year manufacturer warranty. The contractor must coordinate with other site activities, use government‑provided crane and vehicle access, and ensure no interference with lock operations.
• Remove and dispose of existing EPDM membrane and sandbags.
• Re‑install existing sheet‑metal coping and replace damaged cleats.
• Install ½‑in. recovery board over concrete deck with mechanical fasteners.
• Install new 60‑mil fully adhered EPDM membrane with a 90‑UL rating.
• Provide flashing, scupper details, and watertight sealing at chimney and parapet.
• Provide a 10‑year warranty and coordinate all activities with the government and other contractors.