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Unofficial Notice of Invitation to Bid (NIB)
Riverside Unified School District is seeking bids from qualified and interested contractors for the following project titled, SIERRA MS 300 WING RE- ROOF, identified under Solicitation ID: 2025/26-28. Work is to be performed near 4950 Central Ave, Riverside, CA 92504, USA in Riverside County.
General Project Description
This project involves the re-roofing of the 300 wing at Sierra Middle School in Riverside, CA. The scope includes demolition of the existing roof system, followed by the installation of a new three-ply Built-Up Roofing (BUR) system with a reflective acrylic topcoat over a nailable deck. Specific work items include the application of various roofing materials such as inverted cap sheets, bonding adhesives, fiberglass base sheets, asphalt emulsion, base flashing, primary roof coating, walkways, and granules. The project also entails the installation of new edge metal, lead flashing for pipe penetrations and drains, rubber blocks for conduits/pipes, and crickets on AC units and mechanical curbs, as per the detailed specifications provided by the Riverside Unified School District. Safe work practices are emphasized due to the presence of children on site.
General Bid Items
- Quantity: - Unit: - Work Item: Tear off existing roof system
- Quantity: - Unit: - Work Item: Furnish and install new edge metal
- Quantity: - Unit: - Work Item: Furnish and install lead flashing for pipe penetrations
- Quantity: - Unit: - Work Item: Install 30” x 30” lead sheets on drains
- Quantity: - Unit: - Work Item: Install rubber blocks for conduits or pipes
- Quantity: - Unit: - Work Item: Install crickets on AC units and mechanical curbs
- Quantity: 2 Unit: Pads Work Item: Install two walking pads per AC unit
- Quantity: - Unit: - Work Item: Testing interior drains
- Quantity: - Unit: - Work Item: Protect drains from plugs of gravel or debris
- Quantity: 1 Unit: Layer Work Item: Install Henry 606 80# Premium SBS-Modified Mineral Surfaced Underlayment
- Quantity: 2 Unit: Layers Work Item: Install Henry 604 25# Fiberglass Base Sheet
- Quantity: - Unit: - Work Item: Base Flashing Installation
- Quantity: - Unit: - Work Item: Asphalt Emulsion Surfacing
- Quantity: - Unit: - Work Item: Basecoat Application
- Quantity: - Unit: - Work Item: Granules Broadcast
- Quantity: - Unit: - Work Item: Topcoat Application
- Quantity: - Unit: - Work Item: Installation of an extra layer of #902 permanent bond adhesive in full-width application in valleys, drains, and waterways
- Quantity: - Unit: - Work Item: Prime metal or lead flanges, concrete and masonry surfaces
- Quantity: - Unit: - Work Item: Install 606 80# inverted cap sheet granule side down
- Quantity: 1 Unit: Ply Work Item: Install 1-ply of 604 Base Sheet on wood walls
- Quantity: 1 Unit: Ply Work Item: Install 1-ply of 606 Mineral Surfaced Cap Sheet over base sheet
NAICS Classification
NAICS 238160 – Roofing Contractors (Installation and repair of roofing systems, including demolition of existing roofs, application of built-up roofing, installation of flashing, and application of reflective coatings), NAICS 236220 – Commercial and Institutional Building Construction (General construction management and coordination for a public school facility project), NAICS 238910 – Site Preparation Contractors (Demolition of existing roof structures and final site cleanup)
Records and Due Date
This bid opportunity was entered into BidAmerica on February 4, 2026, and was last updated on February 24, 2026. All bids and/or proposals are due on February 26, 2026.
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Legal Disclaimer
All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Riverside Unified School District. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Riverside Unified School District prior to bidding.