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By David A. Clarke Jr.
Blame Washington's intelligence failure, not lack of police
Topic - Julie Udani
On a recent summer morning, Nancy Striniste was perched on the gently sloping roof of her front porch, pulling a few weeds. Unlike the other houses in Ms. Striniste's Arlington neighborhood, hers has a porch roof covered in vegetation, one example of a small but growing trend among environmentally conscious homeowners.
Vegetated systems also work best on flat roofs and ones with a relatively shallow pitch, Ms. Udani added, because steep roofs would require additional infrastructure to keep plants in place.
"For homeowners who are less inspired by the ecological benefits of green roofs, they can also increase the life of the roof by protecting it from exposure to the elements," Ms. Udani said. "And they can increase the insulation on the roof, preventing temperature fluctuations in the home."