St. Mary's County Roof Types and Ages
Beyond the new growth around Leonardtown, most homes in St. Mary's County are a generation or more old, and so are many of their roofs.
- 1992Median year built across St. Mary's County
- 30%Of county homes built before 1980
- 34%Of county homes built from 1980 to 1999
- 73%Of occupied homes lived in by their owners
More than 80 percent of American homes wear asphalt shingles. Three-tab usually lasts about 20 years, architectural about 30 and metal 40 to 80. With nearly two in three county homes built before 2000, plenty of St. Mary's County roofs are running out of time. A free inspection from a local roofer tells you where yours stands before a storm makes the decision for you.
Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates; InterNACHI life expectancy chart; Asphalt Roofing Manufacturers Association. St. Mary's County building code, Table R301.2.