Bismarck Civicplus #1372

Water Treatment Sludge Plant low-slope roof replacement

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.

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