The City of Alameda invites proposals from qualified, licensed roofing contractors for a 4-Year On-Call Roof Repair and Emergency Water-Loss Prevention Services Contract. The intent is to efficiently, safely, and promptly provide roof maintenance, emergency leak call-outs, temporary weatherproofing (tarping/shrink-wrapping), structural roof repairs, and preventative building envelope maintenance. These services aim to preserve and protect City facilities, prevent catastrophic water intrusion, extend the service life of existing roofing systems, and ensure compliance with building codes and safety standards. The City intends to issue one four-year contract for these services, to be used on an as-needed basis

The Public Works Department, Facilities Management team is seeking a qualified roofing contractor to provide on-call emergency leak response, temporary storm-damage mitigation, and permanent roof repairs to protect facility interiors from water-loss events. The selected contractor shall maintain the capability to receive and respond to emergency service requests outside of normal business hours, including evenings, weekends, and holidays, as circumstances require. Contractors are expected to monitor and respond to City service requests diligently and as promptly as reasonably practicable, giving appropriate consideration to the nature and severity of the reported condition, weather conditions, site access, safety considerations, and the availability of necessary personnel, equipment, and materials.

The selected Contractor shall furnish all labor, supervision, specialized equipment, scaffolding, safety gear, and materials necessary to perform emergency leak response, temporary weatherproofing, water intrusion diagnostics, preventative roof maintenance, and permanent roof repairs across City facilities as diligently and as promptly as reasonably practicable.

1. Emergency Response & Leak Containment

a) Emergency Response and Availability: Maintain an on-call emergency dispatch capability and be available to receive emergency service requests outside of normal business hours, including evenings, weekends, and holidays, as circumstances require. Contractor shall acknowledge, prioritize, and respond to emergency service requests diligently and as promptly as reasonably practicable based on the nature and severity of the reported condition, weather conditions, site access, safety considerations, and the availability of necessary personnel, equipment, and materials. Contractor shall coordinate with the City regarding the anticipated timing and manner of response when circumstances prevent immediate action.

b) Emergency Tarping & Shrink-Wrapping: Promptly deploy and install high-grade, weighted, or fastened heavy-duty tarps, temporary membranes, or shrink-wrap over compromised roof zones when reasonably necessary to mitigate active interior leaks and prevent further structural or water damage. Contractor shall prioritize temporary weatherproofing measures based on the severity of the condition and the potential for additional damage.

c) Water Redirection & Drainage Clearance: Promptly address clogged roof drains, scuppers, gutters, and downspouts when necessary during storm events to mitigate ponding water and active water intrusion. Contractor shall prioritize drainage-related conditions based on the severity of the condition and the potential for damage to City facilities.

2. Leak Detection & Water Intrusion Diagnostics

a) Roof Leak Tracing: Perform visual, thermal/infrared, or electronic leak detection to trace active water migration from the roof assembly down to interior ceilings.
b) Core Sampling & Substrate Inspection: Inspect insulation board, roof decking, and underlayments for moisture entrapment, rot, or structural deterioration caused by chronic water intrusion.

3. Permanent Roof Repairs & Restoration

a) Low-Slope / Flat Roof Systems: Repair punctures, open seams, blistered membranes, and failed flashings on Built-Up (BUR), Modified Bitumen, TPO, PVC, and EPDM roofing systems.

b) Steep-Slope Systems: Replace damaged, missing, or deteriorated asphalt shingles, clay/concrete tiles, slate, and standing seam metal roofing panels.

c) Flashings & Penetrations: Repair or replace pitch pockets, pipe boots, counter-flashings, parapet wall caps, expansion joints, skylights, and HVAC curb flashings to eliminate water entry points.

4. Preventative Maintenance & Storm Preparation

a) Pre-Storm / Seasonal Inspections: Perform routine semi-annual and pre-winter roof inspections to identify potential water-loss vulnerabilities before heavy rainfall seasons.

b) Debris & Drainage Maintenance: Clear debris from roofs, valleys, drains, and gutters to ensure unobstructed drainage and reduce ponding water risks.

c) Sealing & Coating Touch-Ups: Apply elastomeric silicone or polyurethane coatings and sealants around high-risk penetration points to proactively prevent leaks.

d) Safety & Compliance: Ensure all roof work complies strictly with Cal-OSHA fall protection standards, environmental regulations, and local building codes.

ALL PROPOSALS SHALL BE SUBMITTED IN ELECTRONIC FORMAT (PDF) TO THE CITY OF ALAMEDA’S PUBLIC WORKS GENERAL MAILBOX AT PW@ALAMEDACA.GOV BY 2 P.M. ON OCTOBER 15TH, 2026.