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Green Roofs And Solar Systems (GRASS)

G.R.A.S.S. (Green Roofs And Solar Systems) is leading the way to a greener and healthier region.  As designers and installers of vegetative roofing systems since 2006, GRASS took on an early role in collaborating with the Philadelphia Water Department in forwarding Philadelphia’s storm water regulations and legislation.  We have become one of the region’s leading green roof contractors and have installed more than half a million square feet of green roof / storm-water systems, and urban roof-top landscapes. Working with G.R.A.S.S. early on in the development process is the most efficient and cost effective way to incorporate vegetative roofing systems into your projects.  Our sister company, Onion Flats has been recognized internationally as an industry leader in green building techniques and possesses an intimate understanding of the coordination necessary to successfully incorporate these systems in the overall building detailing process which benefits our clients early in their development cycle.


Nicole Simonsen

(215) 426-6466
111 W Norris Street
Philadelphia, PA 19122