L. Marshall Inc., roofing and sheet metal contractor, is a uniquely diversified construction company. Since 1913, we have been engaged in many types of commercial, industrial, institutional and residential roofing; custom architectural, sheet metal manufacturing and installation; roofing maintenance, commercial waterproofing and historic roof restoration/ preservation. We are one of the largest and most respected roofing contractors in the country.. Asphalt Shingles|Shingles|Slate|Cedar Shakes|Aluminum|Roofing|Flashing||Industrial Roofing|Roof Construction|Bonded & Insured|Commercial Roofing Contractors|Residential Roofing|Restoration|Repairs