UNSPSC 30251504: Expansion shell

Expansion shells used in conjunction with roof bolts to support roof in underground mine.

UNSPSC 30251504 Expansion shell (Commodity) encompasses roof replacement, restoration, and repair services across diverse state and local facilities—including correctional infrastructure, transit departments, municipal buildings, schools, colleges, and community development housing rehabilitation programs. State and local governments procure complete roof replacement systems with membrane installation, standing-seam metal roofing, synthetic tile systems, fluid-applied elastomeric coatings, and integrated structural repairs, flashing, and lightning protection. Issuing bodies span county sheriffs' offices, municipal departments, school districts (including community colleges), special-purpose districts, and county boards of education. Collier County, Florida; the City of Ocala, Florida; the City of Jackson, Michigan; and the County of Santa Clara, California appear as repeat buyers posting multiple roof-related solicitations. The code captures both individual facility projects and as-needed standing contracts, with work often subject to prevailing-wage requirements on public works and federal compliance obligations when funded through CDBG or ARPA dollars.

Recent activity concentrates in Florida, California, Georgia, Michigan, Texas, Arizona, and Connecticut. Representative recent opportunities include the Collier County Sheriff's Office Jail (J3) Roof Replacement and Louver Repair (Collier County, Florida, ITB 26-8693, bids due October 12, 2026, anticipated budget $3 million); the Rigdon Center Roof Restoration and Repairs (Okaloosa County, Florida, ITB FM 64-26, bids due July 15, 2026); the Georgia International Convention Center roof replacement (City of College Park, Georgia, RFP 26-49, proposals due May 25, 2026); and the City of Jackson Community Development roof and gutter replacements across multiple residential properties (Michigan CDBG-funded projects with bids due August–July 2026). Contractor qualifications consistently require state licensing (Florida roofing licenses, California C-39 licenses, Georgia commercial roofing licenses), manufacturer certifications (Inland Coatings, TPO systems, Firestone EPDM), insurance minimums of $1–2 million general liability, and performance bonds. Liquidated damages for delay and 15–50 year manufacturer warranties are standard. Set-asides and local preferences appear in select jurisdictions (City of College Park three-percent local preference; Houston City College 35-percent small-business participation goal). Work schedules typically allow 60–365 calendar days for completion, with mandatory pre-bid site visits common in operational or sensitive facilities.