How Long Does a Roof Last in Southern Maryland?
Architectural asphalt shingle roofs in Southern Maryland typically last 25 to 30 years with proper ventilation and maintenance. Older 3-tab shingles last 15 to 20 years.
Ventilation matters
Inadequate attic ventilation cooks shingles from below and can cut roof life in half.
Tree coverage
Heavy shade slows drying and accelerates moss and algae growth.
Storm exposure
Hurricane remnants and severe thunderstorms shorten roof life through cumulative damage.