David Large, Vice President, General Manager North County Slate has spent the past 34 years in sales/marketing capacities in various technical product industries. He is an active member of the ASTM (ASTM International) C-18 Dimensional Stone committee governing roofing slate and sits on the Test Methods C18.01 and Material Specification C18.03 sub-committees. He is a charter member of the National Slate Association, sitting on its Standards, Publications and Manual Committees, and holds memberships in several North American roofing industry associations.
