# Bismarck Civicplus #1372

Water Treatment Sludge Plant low-slope roof replacement

**Posted:** October 01, 2026
**Respond By:** October 22, 2026
**Identifier:** 1372
**NAICS:** 238160

The City of Bismarck is seeking a single-prime contractor to replace low-slope roofing at its Water Treatment Sludge Plant.
- **Government buyer:** City of Bismarck; no sub-agency or office is identified.
- **Scope and quantities:** Replace approximately 17,507 square feet of roofing across four areas. Areas A and D are base-bid work; Areas B and C are alternates.
  - **Area A — 7,814 SF, base bid:** Remove adhered EPDM roofing and hot-mopped, multi-layer tapered polyiso insulation; install a vapor barrier, tapered polyiso insulation, coverboard, and ballasted EPDM roofing.
  - **Area B — 2,786 SF, Alternate 1:** Remove adhered EPDM roofing and one mechanically fastened polyiso layer; install a vapor barrier, two polyiso layers with low-rise foam adhesive, coverboard, and adhered EPDM roofing.
  - **Area C — 2,437 SF, Alternate 2:** Remove adhered EPDM roofing and one hot-mopped polyiso layer; install a vapor barrier, two polyiso layers with low-rise foam adhesive, coverboard, and adhered EPDM roofing.
  - **Area D — 4,470 SF, base bid:** Remove ballasted EPDM roofing and EPS insulation; install a vapor barrier, two polyiso layers, coverboard, and ballasted EPDM roofing.
- **Additional work:** Verify concrete roof deck joints and provide supplemental sealing from the topside. Underside joint sealing is excluded and will be provided separately by the Owner.
- **OEMs and vendors:** No roofing OEM, manufacturer, or branded product is specified. The Origin Group is named as the project designer; it is not identified as a roofing-product manufacturer.
- **Completion:** Substantial completion is required by the stated project deadline; no start date or overall duration is specified.

### Description

The City of Bismarck is accepting sealed Single Prime bids for the Water Treatment Sludge Plant Reroof Project. Work includes removing and replacing existing low-slope roofing systems in four roof areas, with base bids for Areas A and D and alternates for Areas B and C. The work also includes verifying and providing supplemental topside sealing of concrete roof deck joints; underside deck joint sealing is provided by the Owner under a separate agreement and is not part of this contract. Bids are due October 22, 2026, at 3:00 PM CT, and the work must be substantially complete by June 30, 2027.

[View original listing](https://www.bismarcknd.gov/bids.aspx?bidID=1372)