NIGP 13574: Tile, Roof, Clay, Burnt Type (see 770-64 for Concrete Roofing Tile)

NIGP 13574 Tile, Roof, Clay, Burnt Type (Item) represents a narrow line within the broader roofing commodity space. In practice, state and local governments buy this code less frequently than related roofing assemblies—most recent activity clusters around slate tile roofing systems (both natural and synthetic), cedar shake replacements, and specialty tile installations at historic or municipal facilities where code compliance or aesthetic standards mandate traditional materials. The City of Tybee Island, Georgia, for example, specified DaVinci Multi-Width Slate tile (with Brava synthetic tile as an alternate) for the Guard House Roof Replacement under ITB 2026-109; the City of Tarpon Springs, Florida, mandated cedar shake shingles for the historical Safford House Museum under a detailed compliance framework tied to the Secretary of the Interior's Standards for Rehabilitation. Issuing bodies are mostly municipalities and special-purpose districts (cities, counties, colleges, school boards) with aging facilities, historic properties, or specialized asset-management needs. Roofing activity dominates NIGP 13574 solicitations in the recent block, but the code also captures ancillary roofing supplies (pottery supplies coexist under this code nominally, though the City of Orlando's pottery-studio supply IFB on October 6, 2026—due November 5—reflects a data-classification artifact rather than roofing procurement).

Geographic spread is concentrated in the Southeast and Southwest, with standout activity in Georgia (Tybee Island, Marietta, Stephens County Board of Education), Florida (Tarpon Springs, Phoenix suburb multi-family roofing), Arizona (Tucson roofing supplies), and Texas (Houston City College lightning protection and roof replacement under IFB 26-18, due June 17). Representative recent opportunities include the City of Tybee Island Guard House Roof Replacement (ITB 2026-109, bids due October 27, 2026 at 2 p.m., mandatory pre-bid October 15, with slate tile system as base bid), the City of Tarpon Springs historical Safford House Museum roof replacement (IFB 260104BAS, bids due August 31, 2026 at 3 p.m., cedar shake in-kind replacement required), and the Houston City College roof replacement and lightning protection (IFB 26-18, bids due June 17, 2026 by 2 p.m. via Bonfire). Bidders on historic or specialty tile projects face restrictive qualifications gates—Tarpon Springs required five continuous years' experience with cedar shake systems and three completed historic restoration projects within the past ten years. Contract values trend moderate to high ($300,000 to $3 million observed); warranty terms typically run ten to twenty years on materials plus workmanship guarantees. M/WBE participation goals and prevailing wage requirements apply on many municipal and school-district projects; performance and payment bonds are standard on awards exceeding $100,000.