UNSPSC 12164905: Waterproof admixture

A waterproofing agent that comes in powdered or liquid form used for mixing with concrete at the time of pouring of concrete. It increases water resistance of concrete structure itself.

UNSPSC 12164905 Waterproof admixture (Commodity) describes crack sealant and joint sealing materials that state and local transportation departments and municipalities procure for pavement maintenance and repair. Recent opportunities show governments buying PolyFlex Type 3 and silicone-based crack sealants meeting Texas Department of Transportation and ASTM standards for asphaltic concrete pavements, as well as hot-poured joint sealants for bridge and roadway applications. The issuing bodies are primarily state departments of transportation, county road maintenance offices, and municipal public works departments, with Texas jurisdictions—including the City of San Antonio, Texas Department of Transportation Lubbock District, Collin County, and the State of Illinois Department of Transportation—appearing most frequently in recent solicitations. The Texas specifications framework (TxDOT Item 300 and Special Provision standards) is the dominant technical standard, indicating concentrated procurement activity in Texas and regional adoption of those specifications elsewhere.

Recent activity spans Texas, California, Utah, Illinois, Maine, Oregon, and Georgia. Representative opportunities include the City of San Antonio Finance Department's IFB 6100019897 for PolyFlex Type 3 crack sealant, due October 16, 2026, requiring 30-35 pound blocks meeting TxDOT and ASTM standards with three-year contract terms and Producer Price Index price adjustments; the Texas Department of Transportation Lubbock District's August 2026 solicitation for Sikasil 728 RCS rapid-cure silicone joint sealant kits and heavy-duty caulking guns; the County of Santa Clara's ITB-PRC-FY27-0091 for Vasona Lake Park trail asphalt rehabilitation with pavement striping (bids due October 7, 2026); and the State of Maine's RFQ for penetrating concrete sealers, epoxy deck treatments, and polymer concrete overlay kits (quotations due July 15, 2026). Contracts typically run one to three years with renewal options and annual price adjustments indexed to Producer Price Index or documented cost changes. FOB Destination delivery with prepaid freight is standard; bonding, prevailing wage compliance on public works, and performance and payment bonds are common requirements.