ARC Firestop Solutions is a specialty firestop contractor covering Maryland, Washington DC and Virginia. Its site states FM Approved 4991 status, membership of the Firestop Contractors International Association and Hilti Accredited Firestop Specialty Contractor status, and it is a Veteran Owned Small Business. Work covers joint protection in wall and floor assemblies and through-penetration protection for pipes, conduits, cables and ducts. It maintains a stocked warehouse and offers priority access to engineering judgements.