# North Dakota Bismarck Civic Plus #1372

Bismarck Water Treatment Sludge Plant low-slope reroofing

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

The City of Bismarck is seeking bids to replace low-slope roofing at its Water Treatment Sludge Plant.
- **Government buyer:** City of Bismarck; no sub-agency or office is identified.
- **Project:** Water Treatment Sludge Plant Re-Roof Project, designed by **The Origin Group** (Project #1011-14). The Origin Group is identified as the project designer, not as a roofing manufacturer or supplier.
- **Scope and areas:** Remove existing roofing and insulation, then install new roofing assemblies in four areas totaling 17,507 square feet.
  - **Area A — Base Bid:** 7,814 sq. ft.; tapered polyiso insulation, vapor barrier, coverboard, and ballasted EPDM roofing.
  - **Area B — Alternate No. 1:** 2,786 sq. ft.; two layers of polyiso installed with low-rise foam adhesive, vapor barrier, coverboard, and adhered EPDM roofing.
  - **Area C — Alternate No. 2:** 2,437 sq. ft.; two layers of polyiso installed with low-rise foam adhesive, vapor barrier, coverboard, and adhered EPDM roofing.
  - **Area D — Base Bid:** 4,470 sq. ft.; two layers of polyiso insulation, vapor barrier, coverboard, and ballasted EPDM roofing.
- **Notable requirements:** Verify concrete roof-deck joints and provide supplemental sealing from above. Sealing the underside of the deck joints is excluded from this roofing work and will be handled under a separate Owner agreement.
- **Manufacturers and products:** No roofing OEMs, brands, or part numbers are specified. EPDM is the requested roofing material.

### Description

The City of Bismarck is soliciting single-prime bids for the Water Treatment Sludge Plant Reroof Project. The work includes removing and replacing low-slope roofing systems in four areas, with base bids for Areas A and D and alternates for Areas B and C. Work also includes verification and supplemental topside sealing of concrete roof deck joints; underside deck joint sealing is provided by the Owner under a separate agreement and is excluded. Substantial completion is required by June 30, 2027.

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