Harbor Roofing

Harbor Roofing is a commercial roofing and waterproofing contractor serving building owners and property managers. The company installs and repairs low-slope roofs in single-ply, modified bitumen and metal systems, along with liquid-applied coatings, green roofs and waterproofing for new construction, below-grade walls and plaza decks. Its founder, Doug Portner, has about 30 years in commercial roofing.

The work is aimed mostly at large commercial buildings and multi-building portfolios rather than homeowners. The office is in Crofton, Maryland, with weekday daytime hours, and the company provides 24/7 emergency service for commercial property owners and managers. Repairs and preventative maintenance inspections are also available for existing buildings.