Unofficial Notice of Invitation to Bid (NIB)

General Bid Items

• Quantity: -  Unit: N/A  Work Item: Encapsulation of existing roof using WeatherWeld 16-30 system.
• Quantity: -  Unit: N/A  Work Item: Application of Title 24 compliant reflective roof coating.
• Quantity: -  Unit: N/A  Work Item: Repair of any damage to the substrate, remove exposed or erupted fasteners.
• Quantity: 30 / 100  Unit: Gallons / SF  Work Item: Application of WeatherWeld Emulsion
• Quantity: 16 / 100  Unit: Lbs. / SF  Work Item: Installation of WeatherWeld Fiberglass Roving
• Quantity: 1.5 / 100  Unit: Gallons / SF  Work Item: Application of Acrylic Basecoat
• Quantity: 1.5 / 100  Unit: Gallons / SF  Work Item: Application of Acrylic Topcoat (Title 24 Compliant)
• Quantity: -  Unit: N/A  Work Item: Install tapered insulation and/or crickets (where needed to ensure no ponding water).
• Quantity: -  Unit: N/A  Work Item: Install flashings and roof accessories, including walkway pads/anti-skid traffic coating.
• Quantity: -  Unit: N/A  Work Item: Remove down to roof surface all damaged roof flashings at curbs and parapet walls.
• Quantity: -  Unit: N/A  Work Item: Remove down to roof surface all existing flashings at roof drains and penetrations.
• Quantity: -  Unit: N/A  Work Item: Fill low spots with like materials to create a smooth, even surface.
• Quantity: -  Unit: N/A  Work Item: Install new wood nailers.
• Quantity: -  Unit: N/A  Work Item: Clean and seal parapet walls, gutters, coping caps, and repair damaged metal where necessary.
• Quantity: -  Unit: N/A  Work Item: Prime bare metal to receive WeatherWeld.
• Quantity: 1 / 1000  Unit: Per SF  Work Item: Install One Way Vents
• Quantity: -  Unit: N/A  Work Item: Install Self-Adhering Membrane at terminations and penetrations.
• Quantity: -  Unit: N/A  Work Item: Encapsulate all rooftop flashings (except sheetmetal counter-flashings) with 250 mils DFT WeatherWeld membrane.
• Quantity: -  Unit: N/A  Work Item: Install cleat-attached coping and edge termination flashings.
• Quantity: -  Unit: N/A  Work Item: Install perimeter flashings attached by continuous cleat where applicable.
• Quantity: -  Unit: N/A  Work Item: Install sheetmetal counterflashing, min. 3” including exterior walls.
• Quantity: -  Unit: N/A  Work Item: Install new sheetmetal, min 24 Ga. Galvanized or bonderized.
• Quantity: -  Unit: N/A  Work Item: Remove and replace edge flashings and scuppers with new.
• Quantity: -  Unit: N/A  Work Item: Install new penetration flashings (where unflashed or deteriorated).
• Quantity: 1 / Square  Unit: Gal  Work Item: Prime all flanges with asphalt primer
• Quantity: -  Unit: N/A  Work Item: Install continuous strip of Self-Adhering Membrane under all perimeter flashings, extending 2 inches over edge.
• Quantity: -  Unit: N/A  Work Item: Install continuous strip of Self-Adhering Membrane at sheetmetal flanges, min. 2 inches onto flange extending min. 6 inches onto roof.
• Quantity: -  Unit: N/A  Work Item: Install sheetmetal extension skirt (where counterflashing cannot be used or existing flashing is too tight).
• Quantity: -  Unit: N/A  Work Item: Install cant strip adhered in adhesive.
• Quantity: -  Unit: N/A  Work Item: Extend base sheet adhered in adhesive to top of base flashing.
• Quantity: -  Unit: N/A  Work Item: Install new base flashing with Self adhering membrane.
• Quantity: -  Unit: N/A  Work Item: Install new sheetmetal counterflashing at existing reglet.
• Quantity: -  Unit: N/A  Work Item: Install 8” self-adhering membrane strip covering cracks in walls above base flashings.
• Quantity: -  Unit: N/A  Work Item: Patch cracks in wall with polyurethane sealant.
• Quantity: -  Unit: N/A  Work Item: Install acrylic coating system on stucco walls above Baseflashing.
• Quantity: -  Unit: N/A  Work Item: Extend WeatherWeld application to the outside edge of parapet wall.
• Quantity: -  Unit: N/A  Work Item: Install new 24 Ga. sheetmetal coping cap (cleat attached I-90 Rating).
• Quantity: -  Unit: N/A  Work Item: Install Self-Adhering Membrane cover over joints.
• Quantity: -  Unit: N/A  Work Item: Remove existing perimeter edge metal and replace with new sheetmetal edge flashing system.
• Quantity: -  Unit: N/A  Work Item: Install Tapered Insulation at back side of rooftop equipment.
• Quantity: -  Unit: N/A  Work Item: Extend base sheet to top of equipment curbs.
• Quantity: -  Unit: N/A  Work Item: Encapsulate equipment curbs with WeatherWeld.
• Quantity: -  Unit: N/A  Work Item: Ensure drains function properly and are free of debris; replace compression clamps and drain screens for flush mount drains.
• Quantity: -  Unit: N/A  Work Item: Remove and replace scupper drains with new sheet metal scupper.
• Quantity: -  Unit: N/A  Work Item: Encapsulate drain bowls and flanges with WeatherWeld.
• Quantity: -  Unit: N/A  Work Item: Remove existing wood blocks supporting rooftop pipes.
• Quantity: -  Unit: N/A  Work Item: Install Recycled rubber pipe support block with Galvanized steel strut (Dura-Block or Equal).
• Quantity: -  Unit: N/A  Work Item: Remove existing roof and fiberboard, and clean in preparation to receive membrane.
• Quantity: -  Unit: N/A  Work Item: Install specified base sheet to the LWIC concrete deck with fasteners appropriate to the deck.
• Quantity: -  Unit: N/A  Work Item: Pressure wash all surfaces, remove dust, dirt, debris, and foreign contaminants; ensure roof is dry prior to application.

NAICS Classification

NAICS 238160 – Roofing Contractors (Installation of fluid-applied seamless roofing systems, application of reflective coatings, and repair of existing roof components)., NAICS 238990 – All Other Specialty Trade Contractors (Sheet metal flashing and trim work, expansion joint installation, pipe support modifications, and other specialized roof system accessories and detailing).

Records and Due Date

This bid opportunity was entered into BidAmerica on February 6, 2026, and was last updated on February 6, 2026. All bids and/or proposals are due on February 24, 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.