Washington County Ionwave #ENG-26-09 Addendum 2

Washington County 540 Western Maryland Parkway roof replacement

Washington County is seeking bids to replace the roof at its 540 Western Maryland Parkway facility in Hagerstown. - Government buyer: Board of County Commissioners of Washington County, Maryland; Division of Engineering; County Project Manager. - Project: Roof replacement at 540 Western Maryland Parkway, Hagerstown, Maryland (Contract No. MS-PR-328-28). - Scope and quantities: Replace approximately 102,768 square feet of existing EPDM roofing with a mechanically attached, true 80-mil PVC membrane. Retain the existing 4-inch polyisocyanurate insulation and add a 1-inch layer plus high-density cover board to achieve at least R-30 overall insulation. Install a continuous 30-inch-wide PVC walkway. - Specified OEM/product: Hickman TerminEdge EX two-piece wall coping assembly, with an extruded aluminum anchor bar and 24-gauge steel fascia with Kynar finish; the owner will select the fascia color. Preservative-treated blocking is also required. - Additional construction work: Remove skylights and infill openings with matching-profile metal decking; remove and legally dispose of abandoned rooftop mechanical equipment; remove and make safe abandoned electrical items below the roof; and remove and cap abandoned vent pipes. - Notable requirements: The new roof assembly must meet the specified insulation value, and the coping system and fascia finish are specified. No quantities are stated for the insulation, cover board, walkway length, coping, decking, or blocking. - Estimated project value: $500,001–$1,000,000.

Description

The Board of County Commissioners of Washington County, Maryland, is soliciting sealed bids to replace the existing approximately 102,768-square-foot EPDM roof membrane with a mechanically attached 80-mil PVC roof membrane. Work includes adding insulation and cover board to achieve a minimum R-30 value, removing skylights and infilling the openings with metal decking, removing abandoned rooftop equipment and electrical items, and capping abandoned vent pipes. The project also includes a 30-inch-wide PVC walk path and replacement of wall copings. Bids are submitted through the Washington County Bidding Site; the bid documents classify the project as Cost Group Letter Class C, $500,001 to $1,000,000.

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