Roof Top Sedums, owned and managed by Teresa Nelson and Roxanne Nagel, is celebrating 10 years of developing green roofs. Nagel and Nelson are both accredited green roof professionals with hands-on experience growing over 100 green roof projects.

In 2007, Roof Top Sedums became one of the first licensed growers of LiveRoof brand systems. Nagel, a horticulturist, previously managed a family greenhouse operation and Nelson (ASLA, LEED AP BD+C) worked as a landscape architect and green building design professional.

Roof Top Sedums is proud to have partnered with clients throughout the Midwest to bring more green roofs from concept to reality. Their showcase proudly displays the following St. Louis community projects: 

  • Ritenour High School Auditorium, a 1,600-square-foot project, was installed in 2012, with the LiveRoof Standard System. 
  • St. Louis Community College, Florissant Valley Campus Engineering Building, a 1,500-square-foot project was installed in 2010 with the LiveRoof Standard System multi-plant mixes in the design.
  • St. Louis City Garden, a 1,472-square-foot project, was installed in 2009 with the LiveRoof Standard System.
  • SSM St. Clare Health Center in Fenton, a 1,500-square-foot project, was installed in 2009 with the LiveRoof Standard System.

“I was first involved with LiveRoof as a landscape architect. I found it very easy and stimulating to design with the system, so much so that I jumped on the opportunity to be a part of the organization,” recounts Nelson. “In the past ten years, we have grown through focusing on continual improvement to stay at the forefront of this rapidly developing industry. We are excited to use this opportunity to interface with and share our experience with more designers, contractors and building owners.”

The name Roof Top Sedums reflects a majority of the green roofs the company supplies, which are lightweight systems, planted with a blend of cold-hardy succulents primarily of the genus Sedum. These shallow-rooting alpine plants are a favorite of green roof designers for their ability to withstand winter’s cold and to store water inside their fleshy foliage during periods of drought. A growing portion of the business is for an expanded palette of plants, including adapted and native perennial forbs and grasses.

“We do so much more than our name implies,” says Nagel. “We are supplying green roofs in a range of soil depths with hundreds of plant options. We grow natives such as black-eyed susans, coneflowers and prairie dropseed, as well as adaptive favorites like alliums, liatris, and feather reed grasses.”

Green roofs help cities control untreated storm water runoff and sewage discharge. Many Midwestern cities have combined sewage overflows, which means that during the wet season, untreated storm water can mix with raw sewage and overflow into local waterways. Green roofs help to absorb and slow down rainfall, which eases the burden on municipal storm water systems. This means healthier waterways and lower costs of treatment and cleanup.

Communities that incorporate green infrastructure can also expect to mitigate the urban heat island effect, while reaping energy conservation value, and gaining habitable space when patios, walkways and seating are included in the rooftop garden design.

A planted roof also provides financial benefits, including extension of roof life, reduction in energy use, and by storm water management on the roof. Employers can experience significant gains in productivity and up to a 10 percent reduction in absences by adding natural views such as those provided by green roof systems. Green builders and remodelers can expect 10-19 percent higher return on investment, as much as 10 percent increased building value, while enjoying a marked reduction (up to 14 percent) in building operating costs. M

Via Press Release