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- However, in 2010 the American National Standards Institute (ANSI) accepted RP14 Wind Design Standard for Vegetative Roofing Systems as an American National Standard. This document provides design and installation recommendations to help eliminate the risk of wind uplift on green roofs in high wind areas. LiveRoof modules are fully vegetated at the time of installation and have subterranean overlapping lips, which allows them to be sheltered from direct wind exposure.
- The LiveRoof Lite System is 2.5” deep and has a dry weight of approximately 10 psf, and thus meets the definition of #4 Ballast (3.13.1). The deeper Standard (4.25”), Deep (6.25”), Maxx 8” and Maxx 12” systems meet the definition of both #4 Ballast and #2 Ballast (3.13.2). This standard serves as a guide but should not replace the involvement of a qualified professional.
- A. Limiting the LiveRoof to the center “field” of the roof top, and using heavier ballast in the corners and along the parapet edges. Such ballasted perimeter design is referred to as a “vegetation free” zone. Vegetation free zones will vary with the parapet height and geometry.
- B. Overlaying the LiveRoof with a mechanically fastened stainless steel netting such as CarlStahl’s Decorcable, flexible stainless cable mesh, firstname.lastname@example.org, 800-444-6271 or G-Sky Netting.
- C. Adhering the LiveRoof modules to a fully adhered rooftop using special two-sided adhesive tape.
Essentials of a sustainable Green Roof: