# Washington County Ionwave #ENG-26-09 Addendum 2

Washington County 540 Western Maryland Parkway Roof Replacement

**Posted:** September 25, 2026
**Respond By:** October 28, 2026
**Identifier:** ENG-26-09 Addendum 2
**NAICS:** 238160

Washington County is seeking bids to replace the roof at its 540 Western Maryland Parkway facility in Hagerstown, Maryland.
- **Government buyer:** Board of County Commissioners of Washington County, Maryland; Division of Engineering; County Project Manager.
- **Project:** Replace approximately **102,768 square feet** of existing EPDM roofing with a mechanically attached, true 80-mil PVC membrane.
- **Roof assembly and materials:** Retain the existing 4-inch polyisocyanurate insulation, add a 1-inch layer and high-density cover board to achieve at least R-30 overall insulation, and install a continuous 30-inch-wide PVC walkway. Include preservative-treated blocking and matching-profile metal decking to infill skylight openings.
- **Named OEM/product system:** **Hickman TerminEdge EX** wall coping assembly, with an extruded aluminum anchor bar and 24-gauge steel fascia with a Kynar finish; the County selects the fascia color. No other OEM or vendor is named in the provided materials.
- **Associated work:** Remove skylights; remove and legally dispose of abandoned rooftop mechanical equipment; remove abandoned electrical items below the roof and make them safe; and remove and cap abandoned vent pipes.
- **Bid structure:** One roof-replacement base-bid line and a **$150,000 construction contingency** for necessary insulation and/or decking replacement. Unused contingency funds are credited to the County. Bidders must provide a unit price for a 4 ft × 8 ft × 2 in polyisocyanurate insulation sheet for potential replacement work.
- **Contract value:** The stated estimated range is **$500,001–$1,000,000**.

### Description

The solicitation seeks sealed bids for replacement of the existing approximately 102,768-square-foot EPDM roof membrane with a mechanically attached 80-mil PVC membrane. Work includes adding insulation and cover board to provide a minimum overall insulation value of R-30, infilling removed skylight openings with metal decking, removing abandoned mechanical and electrical items and vent pipes, providing a PVC walk path, and replacing wall copings. The bid documents also identify a $150,000 construction contingency line item for necessary insulation and/or decking replacement, with any unused contingency credited to the County. Bids are submitted through the Washington County Bidding Site; the deadline is October 28, 2026, at 2:00 p.m. ET.

[View original listing](https://washco-md.ionwave.net/PublicDetail.aspx?bidID=520&SourceType=1)