NIGP 31550: Coatings, Protective (for Wood)

NIGP 31550 Coatings, Protective (For Wood), an Item code, encompasses exterior protective coatings for infrastructure—primarily water storage tanks, standpipes, and related concrete and steel surfaces that require specialized surface preparation, environmental compliance, and prevailing-wage application work. State and local governments solicit under this code for tank rehabilitation and coating projects that combine surface stripping, crack repair, corrosion remediation, and application of AWWA-compliant or environmentally certified coatings to extend asset life. The issuing bodies include municipal utilities and water authorities, typically operating through their purchasing or public works departments, often with mandatory pre-bid meetings, prevailing-wage requirements, and performance/payment bonds for contracts exceeding $200,000. Work attracts both general contractors and specialized coating firms capable of managing multi-phase surface preparation, environmental standards compliance (LEED v4.1, WELL Building Standard), and insurance requirements including pollution liability and contractor bonding.

Recent opportunities cluster in Texas and Florida, with the City of Pembroke Pines, Florida, posting IFB PSUT2505 on March 30, 2026 (bid due May 6, 2025) for exterior stripping, crack repair, and coating of a 2.5-million-gallon pre-stressed concrete water storage tank using approved materials such as Tnemec Series 156 Envirocrete, with a mandatory pre-bid on April 14, 2025, and a projected 180-day performance window. The City of Richardson, Texas, through Dallas County, posted Bid No. 35-26 on March 9, 2026 (bid due April 14, 2026) for replacement and repainting of a 2,400-gallon steel surge tank and standpipe with approximately $100,000 estimated project cost, a voluntary pre-bid on March 23, 2026, and a 60-day on-site work window during October–November. Both solicitations include local or veteran-owned vendor preferences, Davis-Bacon or prevailing-wage compliance, and comprehensive insurance and bonding requirements. The code sees activity primarily from municipal water departments in major metropolitan areas where aging storage and transfer infrastructure requires cyclical maintenance or replacement.