UNSPSC 31211524: Gesso

A substance used to prime surface of canvas for acrylic paint. Used in sculpture or as a base for gilding or painting on wood.

UNSPSC 31211524 Gesso, a Commodity-tier code, does not reflect the work state and local governments are actually buying under this classification. Recent state and local opportunities tagged with this code show art supplies procurement — construction paper, drawing paper, markers, crayons, brushes, tempera paints, canvas panels, modeling clay, poster board, and related classroom materials — but gesso, a specialized painting primer, does not appear in any of the seven substantive recent solicitations. The issuing bodies are predominantly school districts and cooperative purchasing vehicles serving education systems. The School Board of Seminole County, Florida procured bulk art paper through IFB 19200044BLL in 2019 for $43,089.75; Fort Bend Independent School District and Northside Independent School District (San Antonio) both issued RFPs for broad art supplies and equipment; and Coleman County Purchasing Agency (serving 35 Georgia school systems) and Region 7 Purchasing Cooperative (serving Texas school systems) solicited art supplies and paper products under cooperative purchasing frameworks. Dallas Independent School District's RFP JKJ250402, though tagged under this code, addresses water treatment services and is unrelated to art supplies or gesso.

The geographic spread reflects school procurement concentrated in Florida, Texas, and Georgia. Representative recent opportunities include Coleman County Purchasing Agency's CPA 2027-008 Art Supplies Bid (due September 15, 2026, covering scissors, erasers, glue, markers, crayons, colored pencils, brushes, tempera paints, canvas panels, and modeling clay for 35 member school systems with annual orders placed as needed throughout 2027) and CPA 2027-005 Paper Supplies Bid (due September 16, 2026, covering poster board, butcher paper, construction paper, drawing paper, and sketch books for the same cooperative membership). Region 7 Purchasing Cooperative solicited paint and painting supplies catalog discount bids (PAINT2628, due September 29, 2026, $10.3 million estimated over two years) but this is paint rather than gesso. The code shows substantial activity in school supply procurement but a documented mismatch between the nominal commodity (gesso) and what is actually being purchased under it (general art supplies and paper products for classroom use).