Xero Flor green roof technology was created in Germany over 40 years ago and has been used on thousands of projects worldwide.

Xero Flor America, LLC. was formed in conjunction with the 454,000 square foot green roof installation on Ford’s Dearborn Truck Plant. XFA utilizes extensive academic research and proven German technologies to produce a variety of green roof systems tailored to individual project design goals and regional North American climates.

Xero Flor pre-vegetated green roof mats are installed on custom designed base layers for an ‘instant green’ roof system that is naturally resistant to weed encroachment, wind uplift, and surface erosion.

Xero Flor green roofs succeed because the real work happens on the ground. Our lightweight vegetated mats are propagated in the field, rolled up and installed like sod on rooftops, creating fast, easy, green roofing.

Xero Flor pre-vegetated mats are supplied from regional farms located near most U.S. metropolitan areas. Local production insures regionally adapted plant communities, short delivery times, and contributes to locally sourced LEED® credits.

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Green Roof Benefits

Stormwater Management

Green roofs have been demonstrated to retain 60-100% of incoming rainfall. Stormwater retention reduces wastewater treatment facility overflow events. Green roof installations are recognized as effective tools for stormwater management in highly developed urban areas.

Energy Savings

Vegetated surfaces deflect solar radiation and reduce thermal loading of roof surfaces and building structures, thereby requiring less energy use for air conditioning systems. These features also combine to reduce the Urban Heat Island Effect, a phenomenon of increased regional temperatures caused by thermally loaded cityscapes.

Roof Lifetime Extension

Green roofs block UV radiation and reduce temperature fluctuation, adding decades to roof performance. The extension of roof life results in financial savings for building owners and reductions in landfilled roof demolition waste.

Biological Activity

The installation of green roofs helps return green spaces lost during urban development and encourages the return of biological activity. Green roofs can attract and provide a living environment for various forms of wildlife.

Ecological Benefits

Green roofs can greatly reduce runoff contaminants by filtering airborne pollutants, increase oxygens levels, and reduce greenhouse gases. Green roof plant’s foliage and roots naturally absorb airborne pollutants while releasing oxygen back into the atmosphere.

Aesthetic Value

Green roofs help provide urban environments with aesthetically pleasing roofscapes. Green roofs convert unused roof spaces into relaxing break areas for employees, healing gardens for recovering patients, green cityscapes for office buildings, and many other visually appealing green spaces.

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Green Roof Research

About Green Roofs
Green Roofs for Healthy Cities, December 8, 2009.

Green roof stormwater retention: Effects of roof surface, slope, and media depth.
VanWoert, N.D., D.B. Rowe, J.A. Andresen, C.L. Rugh, R.T. Fernandez, and L. Xiao. 2005. J. Environ. Quality 34(3):1036-1044.

Green Roof Runoff Water Quality
Robert Berghage, David Beattie, Albert Jarrett, and Thomas O’Conner 2007. In Proc. Green Roofs for Healthy Cities, Minneapolis, MN.

Quantifying the effect of slope on extensive green roof stormwater retention.
Getter, K.L., D.B. Rowe, and J.A. Andresen. 2007. Ecological Engineering 31:225-231.

Green roofs as urban ecosystems: ecological structures, functions, and services.
Oberndorfer, E., J. Lundholm, B. Bass, M. Connelly, R. Coffman, H. Doshi, N. Dummet, S. Gaffin, M. Kohler, K. Lui, and B. Rowe. 2007. BioScience 57(10):823-833.

Thermal Performance of Green Roofs Through Field Evaluation
Liu, K. and B. Baskaran. 2003. National Research Council of Canada. Report No. NRCC-46412.

Heat Island Impacts
Envrionmental Protection Agency, February 9, 2009.

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