Green Roofs Salisbury MD

A green roof acts like a storm window to reduce energy use, insulating the house from summer heat and winter chill, produces more oxygen than a family uses in a year, and both absorbs and reflects noise. It also collects pollution from the air, as well as capturing, filtering, and slowing water runoff—a great benefit for salmon streams and overburdened storm sewers.

Garden of Eden Landscaping
(302) 236-8061
3487 Woodland Ferry Rd.
Seaford, DE
 
Genesis Lawn Care
(410) 842-7580
1624 Hopewell Ave
Baltimore, MD

Data Provided by:
Adam'S Lawncare Service
(301) 473-8557
4812 Pioneer Circle
Jefferson, MD

Data Provided by:
Wades Home Services Ltd
(443) 967-0125
34 Laurel Way
North East, MD

Data Provided by:
American Lawn Specialists
(410) 751-7751
4 Pine Hill Dr.
Westminster, MD

Data Provided by:
TRUE VINE LAWN CARE
(410) 713-9032
322 CALVIN DRIVE
SALISBURY, MD
 
Grass Gators Llc
(410) 386-0491
Po Box 328
Westminster, MD

Data Provided by:
U.S.Mo.Co. United States Mow Company
(301) 535-8867
3409 C. White Fir Ct
Waldorf, MD

Data Provided by:
Angel Art Landscape, Llc
(443) 874-5813
1313 Bethlehem Avenue
Baltimore, MD

Data Provided by:
Custom Cuts Lawn Care, Llc
(410) 312-7705
9400 Snowden River Parkway Suite 110
Columbia, MD

Data Provided by:
Data Provided by:

Green Roofs

Provided by:

Rooftops around the Northwest are sprouting tufts of grass, forming a greenbelt above our heads. Quite recently, it seems as if green roofs have gone from funky and alternative to upscale and mainstream. The Seattle architecture firm Olson Sundberg recently designed a living roof atop the home and garage of a lakeside estate, as part of a complex geothermal climate control system. And the Northwest Eco-Building Guild green roof tour was greeted with great enthusiasm last spring, when participants climbed up to take a look at planted roofs on homes, offices, studios, and even a chicken coop.

‘The Germans are light years ahead of us,” says Patrick Carey, an architect who heads the Guild's Green Roof Project. In German cities such as Stuttgart and Mannheim, commercial buildings are required to have green roofs. The City of Seattle is taking an active role in encouraging public and residential green roofs, and in Portland, Oregon, developers can build taller if they top out with a living roof. Last June, Portland hosted “Greening Rooftops for Sustainable Communities,” the second annual international green roof conference, which featured 55 speakers from 10 different countries.

Green roofs consist of a layered sandwich of roof deck, waterproof membrane, and soil filter fabric, topped with several inches of lightweight, pumice-rich soil mix. All you see is the top layer of drought-tolerant hardy plants, often enlivened with vegetables, annuals, and perennials. Even after a rainstorm, a fully saturated green roof weighs no more than one made of tile—about 15 pounds per square foot. Surprisingly, the soil need only be three to four inches deep to gain all the ecological benefits, although deeper soil (built up where supports are strongest) allows for a greater variety of plants.

A residential green roof can be built for $8 to $12 per square foot—about the same price as tile or slate, and about twice as much as metal. Green roofs need to be irrigated and weeded regularly for the first year, but when planted with drought-tolerant fescues, mosses, and sedums, they can get by thereafter on rainfall and a twice-yearly weeding. The dirt and plantings provide a cushion, mitigating the extremes of temperature that cause a roof to wear out, and protecting it from sunlight. A living roof often lasts two to three times longer than a standard one.

And there are manifold ecological benefits. A green roof acts like a storm window to reduce energy use, insulating the house from summer heat and winter chill, produces more oxygen than a family uses in a year, and both absorbs and reflects noise. It also collects pollution from the air, as well as capturing, filtering, and slowing water runoff—a great benefit for salmon streams and overburdened storm sewers.

‘This is the greenest thing you can do in building, other than not building at all,” says Carey. He says that the idea of capping homes with alpine meadows “struck my radical core—this is seriously sustainable and a building element that actually gives back to the environment.” 

Read more from Northwest gardeners

From Horticulture Magazine