The National Park Service is seeking a contractor to replace the cedar shingles on two historic houses, the Hannah Varney House and the Dr. Leech House, at the Herbert Hoover National Historic Site in West Branch, Iowa. The project involves removing and replacing the existing wood shingle roof, wood ridge caps, and metal flashing to match the existing material. The contractor will also be responsible for temporary removal and reinstallation of the existing lightning protection system, adding dimensional lumber and felt tar paper for watertight protection, and addressing roof ventilation. The project must be completed within 90 calendar days of the start date. Key features of the project include: • Replacement of cedar shingles on two historic houses • Removal and replacement of existing wood shingle roof, wood ridge caps, and metal flashing • Temporary removal and reinstallation of existing lightning protection system • Addition of dimensional lumber and felt tar paper for watertight protection • Addressing roof ventilation • Completion of the project within 90 calendar days