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| Blackdown Horticultural Consultants Design, supply and installation of green roof systems. Includes concept and design, portfolio, and benefits. United Kingdom. http://www.greenroof.co.uk/ |
| Eco-Roof Systems Company offering intensive and extensive systems. Includes benefits, considerations, issues, construction, cost analysis, and case studies. http://www.ecoroofsystems.com/ |
| Emory Knoll Farms Supplier of green roof plants. Includes FAQ, research, projects, and links. http://www.greenroofplants.com/ |
| GreenGrid Green roof system for industrial, commercial and government facilities. Includes product specifications, FAQ, and completed projects. http://www.greengridroofs.com/ |
| Greenroofs.com Information about green roof architecture including history, advantages and issues, plant lists, markets in North America and Europe, case studies, events, and links. http://www.greenroofs.com/ |
| Roofscapes, Inc. Roofmeadow vegetated roof covers and roof leak survey and detection services. Includes benefits, projects, and links. http://www.roofmeadow.com/ |