# Washington County Ionwave #ENG-26-09 Addendum 1

Washington County 540 Western Maryland Parkway Roof Replacement

**Posted:** September 25, 2026
**Respond By:** October 28, 2026
**Identifier:** ENG-26-09 Addendum 1
**NAICS:** 238160

Washington County is seeking a contractor to replace the roof at its facility at 540 Western Maryland Parkway.

### Description

The Board of County Commissioners of Washington County, Maryland, is seeking sealed bids for replacement of the existing roof at 540 Western Maryland Parkway. The work generally includes replacing approximately 102,768 square feet of EPDM roof membrane with a mechanically attached PVC membrane, adding insulation and a cover board, and providing a PVC walk path. It also includes removing and infilling skylight openings, removing abandoned roof equipment and electrical items, capping vent pipes, and replacing wall copings. The bid documents identify the project as Cost Group Letter Class C ($500,001 to $1,000,000); the posting includes a $150,000 construction contingency line item.

[View original listing](https://washco-md.ionwave.net/PublicDetail.aspx?bidID=513&SourceType=1)